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UploadFile extends File { - constructor(filepath) { - super([], basename(filepath)) - } - - stream() { - return fs.createReadStream(this.filepath) - } -} +import fetch, { FormData, Request, fileFromSync } from 'node-fetch' +import axios from 'axios' const apiKeySockenklaus = "bxmlNuUlPiY4YRRIcRuJ5eflZCU7aOHQPOgGmts4f8" const apiKeyTestUser = "xOUY572Rd6Fw3qoE3EFBFy3G3sITaIQsgPPc8TAbQ" @@ -22,8 +13,8 @@ const settings = { } const args = { - tdarrPath: "/immich/6c0138fb-62c4-4a99-aeed-721a845f90f3/2025/07/SampleVideo_1280x720_10mb.mp4", - newFile: "./SampleVideo_1280x720_30mb.mp4" + tdarrPath: "/immich/6c0138fb-62c4-4a99-aeed-721a845f90f3/2025/07/SampleVideo_1280x720_30mb.mp4", + newFile: "./SampleVideo_1280x720_10mb.mp4" } const originalPath = args.tdarrPath.replace(settings.immichMount, "") @@ -63,20 +54,24 @@ async function getAssetByOriginalPath(path) { } async function replaceAsset(assetInfo, newFilePath) { - //const file = await fs.createReadStream(newFilePath) - const file = await fs.readFile(newFilePath) + const file = fileFromSync(newFilePath) + + const fileName = newFilePath.replace(/^.*[\\/]/, '') const uploadData = new FormData() - uploadData.set("assetData", file) + uploadData.set("assetData", file, fileName) uploadData.set("deviceAssetId", assetInfo.deviceAssetId) uploadData.set("deviceId", assetInfo.deviceId) uploadData.set("fileCreatedAt", assetInfo.fileCreatedAt) uploadData.set("fileModifiedAt", assetInfo.fileModifiedAt) + console.log(uploadData) + const replaceRequest = new Request(settings.apiBaseUrl + "assets/"+assetInfo.id+"/original", { method: "PUT", headers: { "Accept": "application/json", + //"Content-Type": "multipart/form-data", "x-api-key": settings.apiKey }, body: uploadData @@ -91,63 +86,4 @@ const assetInfo = await getAssetByOriginalPath(originalPath) console.log(JSON.stringify(assetInfo, undefined, 2)) -console.log(await replaceAsset(assetInfo, args.newFile)) - -/* -fetch(searchRequest) - .then(response => { - if(!response.ok){ - throw new Error(`Search failed: ${response.status} - ${response.statusText}`) - } - return response.json() - }) - .then(body => { - console.log(JSON.stringify(body, undefined, 2)) - - if (body.assets.total !== 1) { - console.log(`Found ${body.assets.total} assets, stopping here`) - return Promise.resolve(null) - } - - const id = body.assets.items[0].id - - const file = fs.readFileSync(args.newFile) - - const uploadData = new FormData() - uploadData.set("assetData", file) - uploadData.set("deviceAssetId", body.assets.items[0].deviceAssetId) - uploadData.set("deviceId", body.assets.items[0].deviceId) - uploadData.set("fileCreatedAt", body.assets.items[0].fileCreatedAt) - uploadData.set("fileModifiedAt", body.assets.items[0].fileModifiedAt) - - //console.dir(uploadData.get("assetData")) - - const replaceRequest = new Request(settings.apiBaseUrl + "assets/"+id+"/original", { - method: "PUT", - headers: { - "Accept": "application/json", - "x-api-key": settings.apiKey - }, - body: uploadData - }) - - return fetch(replaceRequest) - }) - .then(putResponse => { - if(!putResponse) { - throw new Error(`No put request was made`) - } - if(!putResponse.ok) { - throw new Error(`Replace failed: ${putResponse.status} - ${putResponse.statusText}`) - } - return putResponse.json() - }) - .then(replaceBody => { - console.log(JSON.stringify(replaceBody, undefined, 2)) - }) - .catch(error => console.log(error)) - - -*/ -//await fetch(replaceRequest) -// .then(response => response.json()) \ No newline at end of file +console.log(await replaceAsset(assetInfo, args.newFile)) \ No newline at end of file diff --git a/node_modules/.package-lock.json b/node_modules/.package-lock.json index 5f74c6c..9536f2e 100644 --- a/node_modules/.package-lock.json +++ b/node_modules/.package-lock.json @@ -1,8 +1,433 @@ { "name": "immich-api-test", - "lockfileVersion": 2, + "lockfileVersion": 3, "requires": true, "packages": { + "node_modules/@esbuild/aix-ppc64": { + "version": "0.25.6", + "resolved": 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"sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==", + "license": "MIT" + }, "node_modules/resolve-pkg-maps": { "version": "1.0.0", "resolved": "https://registry.npmjs.org/resolve-pkg-maps/-/resolve-pkg-maps-1.0.0.tgz", @@ -99,6 +900,15 @@ "optionalDependencies": { "fsevents": "~2.3.3" } + }, + "node_modules/web-streams-polyfill": { + "version": "3.3.3", + "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz", + "integrity": "sha512-d2JWLCivmZYTSIoge9MsgFCZrt571BikcWGYkjC1khllbTeDlGqZ2D8vD8E/lJa8WGWbb7Plm8/XJYV7IJHZZw==", + "license": "MIT", + "engines": { + "node": ">= 8" + } } } } diff --git a/node_modules/asynckit/LICENSE b/node_modules/asynckit/LICENSE new file mode 100644 index 0000000..c9eca5d --- /dev/null +++ b/node_modules/asynckit/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2016 Alex Indigo + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/asynckit/README.md b/node_modules/asynckit/README.md new file mode 100644 index 0000000..ddcc7e6 --- /dev/null +++ b/node_modules/asynckit/README.md @@ -0,0 +1,233 @@ +# asynckit [![NPM Module](https://img.shields.io/npm/v/asynckit.svg?style=flat)](https://www.npmjs.com/package/asynckit) + +Minimal async jobs utility library, with streams support. + +[![PhantomJS Build](https://img.shields.io/travis/alexindigo/asynckit/v0.4.0.svg?label=browser&style=flat)](https://travis-ci.org/alexindigo/asynckit) +[![Linux Build](https://img.shields.io/travis/alexindigo/asynckit/v0.4.0.svg?label=linux:0.12-6.x&style=flat)](https://travis-ci.org/alexindigo/asynckit) +[![Windows Build](https://img.shields.io/appveyor/ci/alexindigo/asynckit/v0.4.0.svg?label=windows:0.12-6.x&style=flat)](https://ci.appveyor.com/project/alexindigo/asynckit) + +[![Coverage Status](https://img.shields.io/coveralls/alexindigo/asynckit/v0.4.0.svg?label=code+coverage&style=flat)](https://coveralls.io/github/alexindigo/asynckit?branch=master) +[![Dependency Status](https://img.shields.io/david/alexindigo/asynckit/v0.4.0.svg?style=flat)](https://david-dm.org/alexindigo/asynckit) +[![bitHound Overall Score](https://www.bithound.io/github/alexindigo/asynckit/badges/score.svg)](https://www.bithound.io/github/alexindigo/asynckit) + + + +AsyncKit provides harness for `parallel` and `serial` iterators over list of items represented by arrays or objects. +Optionally it accepts abort function (should be synchronously return by iterator for each item), and terminates left over jobs upon an error event. For specific iteration order built-in (`ascending` and `descending`) and custom sort helpers also supported, via `asynckit.serialOrdered` method. + +It ensures async operations to keep behavior more stable and prevent `Maximum call stack size exceeded` errors, from sync iterators. + +| compression | size | +| :----------------- | -------: | +| asynckit.js | 12.34 kB | +| asynckit.min.js | 4.11 kB | +| asynckit.min.js.gz | 1.47 kB | + + +## Install + +```sh +$ npm install --save asynckit +``` + +## Examples + +### Parallel Jobs + +Runs iterator over provided array in parallel. Stores output in the `result` array, +on the matching positions. In unlikely event of an error from one of the jobs, +will terminate rest of the active jobs (if abort function is provided) +and return error along with salvaged data to the main callback function. + +#### Input Array + +```javascript +var parallel = require('asynckit').parallel + , assert = require('assert') + ; + +var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] + , expectedTarget = [ 1, 1, 2, 4, 8, 16, 32, 64 ] + , target = [] + ; + +parallel(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); +}); + +// async job accepts one element from the array +// and a callback function +function asyncJob(item, cb) +{ + // different delays (in ms) per item + var delay = item * 25; + + // pretend different jobs take different time to finish + // and not in consequential order + var timeoutId = setTimeout(function() { + target.push(item); + cb(null, item * 2); + }, delay); + + // allow to cancel "leftover" jobs upon error + // return function, invoking of which will abort this job + return clearTimeout.bind(null, timeoutId); +} +``` + +More examples could be found in [test/test-parallel-array.js](test/test-parallel-array.js). + +#### Input Object + +Also it supports named jobs, listed via object. + +```javascript +var parallel = require('asynckit/parallel') + , assert = require('assert') + ; + +var source = { first: 1, one: 1, four: 4, sixteen: 16, sixtyFour: 64, thirtyTwo: 32, eight: 8, two: 2 } + , expectedResult = { first: 2, one: 2, four: 8, sixteen: 32, sixtyFour: 128, thirtyTwo: 64, eight: 16, two: 4 } + , expectedTarget = [ 1, 1, 2, 4, 8, 16, 32, 64 ] + , expectedKeys = [ 'first', 'one', 'two', 'four', 'eight', 'sixteen', 'thirtyTwo', 'sixtyFour' ] + , target = [] + , keys = [] + ; + +parallel(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); + assert.deepEqual(keys, expectedKeys); +}); + +// supports full value, key, callback (shortcut) interface +function asyncJob(item, key, cb) +{ + // different delays (in ms) per item + var delay = item * 25; + + // pretend different jobs take different time to finish + // and not in consequential order + var timeoutId = setTimeout(function() { + keys.push(key); + target.push(item); + cb(null, item * 2); + }, delay); + + // allow to cancel "leftover" jobs upon error + // return function, invoking of which will abort this job + return clearTimeout.bind(null, timeoutId); +} +``` + +More examples could be found in [test/test-parallel-object.js](test/test-parallel-object.js). + +### Serial Jobs + +Runs iterator over provided array sequentially. Stores output in the `result` array, +on the matching positions. In unlikely event of an error from one of the jobs, +will not proceed to the rest of the items in the list +and return error along with salvaged data to the main callback function. + +#### Input Array + +```javascript +var serial = require('asynckit/serial') + , assert = require('assert') + ; + +var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] + , expectedTarget = [ 0, 1, 2, 3, 4, 5, 6, 7 ] + , target = [] + ; + +serial(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); +}); + +// extended interface (item, key, callback) +// also supported for arrays +function asyncJob(item, key, cb) +{ + target.push(key); + + // it will be automatically made async + // even it iterator "returns" in the same event loop + cb(null, item * 2); +} +``` + +More examples could be found in [test/test-serial-array.js](test/test-serial-array.js). + +#### Input Object + +Also it supports named jobs, listed via object. + +```javascript +var serial = require('asynckit').serial + , assert = require('assert') + ; + +var source = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , expectedResult = [ 2, 2, 8, 32, 128, 64, 16, 4 ] + , expectedTarget = [ 0, 1, 2, 3, 4, 5, 6, 7 ] + , target = [] + ; + +var source = { first: 1, one: 1, four: 4, sixteen: 16, sixtyFour: 64, thirtyTwo: 32, eight: 8, two: 2 } + , expectedResult = { first: 2, one: 2, four: 8, sixteen: 32, sixtyFour: 128, thirtyTwo: 64, eight: 16, two: 4 } + , expectedTarget = [ 1, 1, 4, 16, 64, 32, 8, 2 ] + , target = [] + ; + + +serial(source, asyncJob, function(err, result) +{ + assert.deepEqual(result, expectedResult); + assert.deepEqual(target, expectedTarget); +}); + +// shortcut interface (item, callback) +// works for object as well as for the arrays +function asyncJob(item, cb) +{ + target.push(item); + + // it will be automatically made async + // even it iterator "returns" in the same event loop + cb(null, item * 2); +} +``` + +More examples could be found in [test/test-serial-object.js](test/test-serial-object.js). + +_Note: Since _object_ is an _unordered_ collection of properties, +it may produce unexpected results with sequential iterations. +Whenever order of the jobs' execution is important please use `serialOrdered` method._ + +### Ordered Serial Iterations + +TBD + +For example [compare-property](compare-property) package. + +### Streaming interface + +TBD + +## Want to Know More? + +More examples can be found in [test folder](test/). + +Or open an [issue](https://github.com/alexindigo/asynckit/issues) with questions and/or suggestions. + +## License + +AsyncKit is licensed under the MIT license. diff --git a/node_modules/asynckit/bench.js b/node_modules/asynckit/bench.js new file mode 100644 index 0000000..c612f1a --- /dev/null +++ b/node_modules/asynckit/bench.js @@ -0,0 +1,76 @@ +/* eslint no-console: "off" */ + +var asynckit = require('./') + , async = require('async') + , assert = require('assert') + , expected = 0 + ; + +var Benchmark = require('benchmark'); +var suite = new Benchmark.Suite; + +var source = []; +for (var z = 1; z < 100; z++) +{ + source.push(z); + expected += z; +} + +suite +// add tests + +.add('async.map', function(deferred) +{ + var total = 0; + + async.map(source, + function(i, cb) + { + setImmediate(function() + { + total += i; + cb(null, total); + }); + }, + function(err, result) + { + assert.ifError(err); + assert.equal(result[result.length - 1], expected); + deferred.resolve(); + }); +}, {'defer': true}) + + +.add('asynckit.parallel', function(deferred) +{ + var total = 0; + + asynckit.parallel(source, + function(i, cb) + { + setImmediate(function() + { + total += i; + cb(null, total); + }); + }, + function(err, result) + { + assert.ifError(err); + assert.equal(result[result.length - 1], expected); + deferred.resolve(); + }); +}, {'defer': true}) + + +// add listeners +.on('cycle', function(ev) +{ + console.log(String(ev.target)); +}) +.on('complete', function() +{ + console.log('Fastest is ' + this.filter('fastest').map('name')); +}) +// run async +.run({ 'async': true }); diff --git a/node_modules/asynckit/index.js b/node_modules/asynckit/index.js new file mode 100644 index 0000000..455f945 --- /dev/null +++ b/node_modules/asynckit/index.js @@ -0,0 +1,6 @@ +module.exports = +{ + parallel : require('./parallel.js'), + serial : require('./serial.js'), + serialOrdered : require('./serialOrdered.js') +}; diff --git a/node_modules/asynckit/lib/abort.js b/node_modules/asynckit/lib/abort.js new file mode 100644 index 0000000..114367e --- /dev/null +++ b/node_modules/asynckit/lib/abort.js @@ -0,0 +1,29 @@ +// API +module.exports = abort; + +/** + * Aborts leftover active jobs + * + * @param {object} state - current state object + */ +function abort(state) +{ + Object.keys(state.jobs).forEach(clean.bind(state)); + + // reset leftover jobs + state.jobs = {}; +} + +/** + * Cleans up leftover job by invoking abort function for the provided job id + * + * @this state + * @param {string|number} key - job id to abort + */ +function clean(key) +{ + if (typeof this.jobs[key] == 'function') + { + this.jobs[key](); + } +} diff --git a/node_modules/asynckit/lib/async.js b/node_modules/asynckit/lib/async.js new file mode 100644 index 0000000..7f1288a --- /dev/null +++ b/node_modules/asynckit/lib/async.js @@ -0,0 +1,34 @@ +var defer = require('./defer.js'); + +// API +module.exports = async; + +/** + * Runs provided callback asynchronously + * even if callback itself is not + * + * @param {function} callback - callback to invoke + * @returns {function} - augmented callback + */ +function async(callback) +{ + var isAsync = false; + + // check if async happened + defer(function() { isAsync = true; }); + + return function async_callback(err, result) + { + if (isAsync) + { + callback(err, result); + } + else + { + defer(function nextTick_callback() + { + callback(err, result); + }); + } + }; +} diff --git a/node_modules/asynckit/lib/defer.js b/node_modules/asynckit/lib/defer.js new file mode 100644 index 0000000..b67110c --- /dev/null +++ b/node_modules/asynckit/lib/defer.js @@ -0,0 +1,26 @@ +module.exports = defer; + +/** + * Runs provided function on next iteration of the event loop + * + * @param {function} fn - function to run + */ +function defer(fn) +{ + var nextTick = typeof setImmediate == 'function' + ? setImmediate + : ( + typeof process == 'object' && typeof process.nextTick == 'function' + ? process.nextTick + : null + ); + + if (nextTick) + { + nextTick(fn); + } + else + { + setTimeout(fn, 0); + } +} diff --git a/node_modules/asynckit/lib/iterate.js b/node_modules/asynckit/lib/iterate.js new file mode 100644 index 0000000..5d2839a --- /dev/null +++ b/node_modules/asynckit/lib/iterate.js @@ -0,0 +1,75 @@ +var async = require('./async.js') + , abort = require('./abort.js') + ; + +// API +module.exports = iterate; + +/** + * Iterates over each job object + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {object} state - current job status + * @param {function} callback - invoked when all elements processed + */ +function iterate(list, iterator, state, callback) +{ + // store current index + var key = state['keyedList'] ? state['keyedList'][state.index] : state.index; + + state.jobs[key] = runJob(iterator, key, list[key], function(error, output) + { + // don't repeat yourself + // skip secondary callbacks + if (!(key in state.jobs)) + { + return; + } + + // clean up jobs + delete state.jobs[key]; + + if (error) + { + // don't process rest of the results + // stop still active jobs + // and reset the list + abort(state); + } + else + { + state.results[key] = output; + } + + // return salvaged results + callback(error, state.results); + }); +} + +/** + * Runs iterator over provided job element + * + * @param {function} iterator - iterator to invoke + * @param {string|number} key - key/index of the element in the list of jobs + * @param {mixed} item - job description + * @param {function} callback - invoked after iterator is done with the job + * @returns {function|mixed} - job abort function or something else + */ +function runJob(iterator, key, item, callback) +{ + var aborter; + + // allow shortcut if iterator expects only two arguments + if (iterator.length == 2) + { + aborter = iterator(item, async(callback)); + } + // otherwise go with full three arguments + else + { + aborter = iterator(item, key, async(callback)); + } + + return aborter; +} diff --git a/node_modules/asynckit/lib/readable_asynckit.js b/node_modules/asynckit/lib/readable_asynckit.js new file mode 100644 index 0000000..78ad240 --- /dev/null +++ b/node_modules/asynckit/lib/readable_asynckit.js @@ -0,0 +1,91 @@ +var streamify = require('./streamify.js') + , defer = require('./defer.js') + ; + +// API +module.exports = ReadableAsyncKit; + +/** + * Base constructor for all streams + * used to hold properties/methods + */ +function ReadableAsyncKit() +{ + ReadableAsyncKit.super_.apply(this, arguments); + + // list of active jobs + this.jobs = {}; + + // add stream methods + this.destroy = destroy; + this._start = _start; + this._read = _read; +} + +/** + * Destroys readable stream, + * by aborting outstanding jobs + * + * @returns {void} + */ +function destroy() +{ + if (this.destroyed) + { + return; + } + + this.destroyed = true; + + if (typeof this.terminator == 'function') + { + this.terminator(); + } +} + +/** + * Starts provided jobs in async manner + * + * @private + */ +function _start() +{ + // first argument – runner function + var runner = arguments[0] + // take away first argument + , args = Array.prototype.slice.call(arguments, 1) + // second argument - input data + , input = args[0] + // last argument - result callback + , endCb = streamify.callback.call(this, args[args.length - 1]) + ; + + args[args.length - 1] = endCb; + // third argument - iterator + args[1] = streamify.iterator.call(this, args[1]); + + // allow time for proper setup + defer(function() + { + if (!this.destroyed) + { + this.terminator = runner.apply(null, args); + } + else + { + endCb(null, Array.isArray(input) ? [] : {}); + } + }.bind(this)); +} + + +/** + * Implement _read to comply with Readable streams + * Doesn't really make sense for flowing object mode + * + * @private + */ +function _read() +{ + +} diff --git a/node_modules/asynckit/lib/readable_parallel.js b/node_modules/asynckit/lib/readable_parallel.js new file mode 100644 index 0000000..5d2929f --- /dev/null +++ b/node_modules/asynckit/lib/readable_parallel.js @@ -0,0 +1,25 @@ +var parallel = require('../parallel.js'); + +// API +module.exports = ReadableParallel; + +/** + * Streaming wrapper to `asynckit.parallel` + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {stream.Readable#} + */ +function ReadableParallel(list, iterator, callback) +{ + if (!(this instanceof ReadableParallel)) + { + return new ReadableParallel(list, iterator, callback); + } + + // turn on object mode + ReadableParallel.super_.call(this, {objectMode: true}); + + this._start(parallel, list, iterator, callback); +} diff --git a/node_modules/asynckit/lib/readable_serial.js b/node_modules/asynckit/lib/readable_serial.js new file mode 100644 index 0000000..7822698 --- /dev/null +++ b/node_modules/asynckit/lib/readable_serial.js @@ -0,0 +1,25 @@ +var serial = require('../serial.js'); + +// API +module.exports = ReadableSerial; + +/** + * Streaming wrapper to `asynckit.serial` + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {stream.Readable#} + */ +function ReadableSerial(list, iterator, callback) +{ + if (!(this instanceof ReadableSerial)) + { + return new ReadableSerial(list, iterator, callback); + } + + // turn on object mode + ReadableSerial.super_.call(this, {objectMode: true}); + + this._start(serial, list, iterator, callback); +} diff --git a/node_modules/asynckit/lib/readable_serial_ordered.js b/node_modules/asynckit/lib/readable_serial_ordered.js new file mode 100644 index 0000000..3de89c4 --- /dev/null +++ b/node_modules/asynckit/lib/readable_serial_ordered.js @@ -0,0 +1,29 @@ +var serialOrdered = require('../serialOrdered.js'); + +// API +module.exports = ReadableSerialOrdered; +// expose sort helpers +module.exports.ascending = serialOrdered.ascending; +module.exports.descending = serialOrdered.descending; + +/** + * Streaming wrapper to `asynckit.serialOrdered` + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} sortMethod - custom sort function + * @param {function} callback - invoked when all elements processed + * @returns {stream.Readable#} + */ +function ReadableSerialOrdered(list, iterator, sortMethod, callback) +{ + if (!(this instanceof ReadableSerialOrdered)) + { + return new ReadableSerialOrdered(list, iterator, sortMethod, callback); + } + + // turn on object mode + ReadableSerialOrdered.super_.call(this, {objectMode: true}); + + this._start(serialOrdered, list, iterator, sortMethod, callback); +} diff --git a/node_modules/asynckit/lib/state.js b/node_modules/asynckit/lib/state.js new file mode 100644 index 0000000..cbea7ad --- /dev/null +++ b/node_modules/asynckit/lib/state.js @@ -0,0 +1,37 @@ +// API +module.exports = state; + +/** + * Creates initial state object + * for iteration over list + * + * @param {array|object} list - list to iterate over + * @param {function|null} sortMethod - function to use for keys sort, + * or `null` to keep them as is + * @returns {object} - initial state object + */ +function state(list, sortMethod) +{ + var isNamedList = !Array.isArray(list) + , initState = + { + index : 0, + keyedList: isNamedList || sortMethod ? Object.keys(list) : null, + jobs : {}, + results : isNamedList ? {} : [], + size : isNamedList ? Object.keys(list).length : list.length + } + ; + + if (sortMethod) + { + // sort array keys based on it's values + // sort object's keys just on own merit + initState.keyedList.sort(isNamedList ? sortMethod : function(a, b) + { + return sortMethod(list[a], list[b]); + }); + } + + return initState; +} diff --git a/node_modules/asynckit/lib/streamify.js b/node_modules/asynckit/lib/streamify.js new file mode 100644 index 0000000..f56a1c9 --- /dev/null +++ b/node_modules/asynckit/lib/streamify.js @@ -0,0 +1,141 @@ +var async = require('./async.js'); + +// API +module.exports = { + iterator: wrapIterator, + callback: wrapCallback +}; + +/** + * Wraps iterators with long signature + * + * @this ReadableAsyncKit# + * @param {function} iterator - function to wrap + * @returns {function} - wrapped function + */ +function wrapIterator(iterator) +{ + var stream = this; + + return function(item, key, cb) + { + var aborter + , wrappedCb = async(wrapIteratorCallback.call(stream, cb, key)) + ; + + stream.jobs[key] = wrappedCb; + + // it's either shortcut (item, cb) + if (iterator.length == 2) + { + aborter = iterator(item, wrappedCb); + } + // or long format (item, key, cb) + else + { + aborter = iterator(item, key, wrappedCb); + } + + return aborter; + }; +} + +/** + * Wraps provided callback function + * allowing to execute snitch function before + * real callback + * + * @this ReadableAsyncKit# + * @param {function} callback - function to wrap + * @returns {function} - wrapped function + */ +function wrapCallback(callback) +{ + var stream = this; + + var wrapped = function(error, result) + { + return finisher.call(stream, error, result, callback); + }; + + return wrapped; +} + +/** + * Wraps provided iterator callback function + * makes sure snitch only called once, + * but passes secondary calls to the original callback + * + * @this ReadableAsyncKit# + * @param {function} callback - callback to wrap + * @param {number|string} key - iteration key + * @returns {function} wrapped callback + */ +function wrapIteratorCallback(callback, key) +{ + var stream = this; + + return function(error, output) + { + // don't repeat yourself + if (!(key in stream.jobs)) + { + callback(error, output); + return; + } + + // clean up jobs + delete stream.jobs[key]; + + return streamer.call(stream, error, {key: key, value: output}, callback); + }; +} + +/** + * Stream wrapper for iterator callback + * + * @this ReadableAsyncKit# + * @param {mixed} error - error response + * @param {mixed} output - iterator output + * @param {function} callback - callback that expects iterator results + */ +function streamer(error, output, callback) +{ + if (error && !this.error) + { + this.error = error; + this.pause(); + this.emit('error', error); + // send back value only, as expected + callback(error, output && output.value); + return; + } + + // stream stuff + this.push(output); + + // back to original track + // send back value only, as expected + callback(error, output && output.value); +} + +/** + * Stream wrapper for finishing callback + * + * @this ReadableAsyncKit# + * @param {mixed} error - error response + * @param {mixed} output - iterator output + * @param {function} callback - callback that expects final results + */ +function finisher(error, output, callback) +{ + // signal end of the stream + // only for successfully finished streams + if (!error) + { + this.push(null); + } + + // back to original track + callback(error, output); +} diff --git a/node_modules/asynckit/lib/terminator.js b/node_modules/asynckit/lib/terminator.js new file mode 100644 index 0000000..d6eb992 --- /dev/null +++ b/node_modules/asynckit/lib/terminator.js @@ -0,0 +1,29 @@ +var abort = require('./abort.js') + , async = require('./async.js') + ; + +// API +module.exports = terminator; + +/** + * Terminates jobs in the attached state context + * + * @this AsyncKitState# + * @param {function} callback - final callback to invoke after termination + */ +function terminator(callback) +{ + if (!Object.keys(this.jobs).length) + { + return; + } + + // fast forward iteration index + this.index = this.size; + + // abort jobs + abort(this); + + // send back results we have so far + async(callback)(null, this.results); +} diff --git a/node_modules/asynckit/package.json b/node_modules/asynckit/package.json new file mode 100644 index 0000000..51147d6 --- /dev/null +++ b/node_modules/asynckit/package.json @@ -0,0 +1,63 @@ +{ + "name": "asynckit", + "version": "0.4.0", + "description": "Minimal async jobs utility library, with streams support", + "main": "index.js", + "scripts": { + "clean": "rimraf coverage", + "lint": "eslint *.js lib/*.js test/*.js", + "test": "istanbul cover --reporter=json tape -- 'test/test-*.js' | tap-spec", + "win-test": "tape test/test-*.js", + "browser": "browserify -t browserify-istanbul test/lib/browserify_adjustment.js test/test-*.js | obake --coverage | tap-spec", + "report": "istanbul report", + "size": "browserify index.js | size-table asynckit", + "debug": "tape test/test-*.js" + }, + "pre-commit": [ + "clean", + "lint", + "test", + "browser", + "report", + "size" + ], + "repository": { + "type": "git", + "url": "git+https://github.com/alexindigo/asynckit.git" + }, + "keywords": [ + "async", + "jobs", + "parallel", + "serial", + "iterator", + "array", + "object", + "stream", + "destroy", + "terminate", + "abort" + ], + "author": "Alex Indigo ", + "license": "MIT", + "bugs": { + "url": "https://github.com/alexindigo/asynckit/issues" + }, + "homepage": "https://github.com/alexindigo/asynckit#readme", + "devDependencies": { + "browserify": "^13.0.0", + "browserify-istanbul": "^2.0.0", + "coveralls": "^2.11.9", + "eslint": "^2.9.0", + "istanbul": "^0.4.3", + "obake": "^0.1.2", + "phantomjs-prebuilt": "^2.1.7", + "pre-commit": "^1.1.3", + "reamde": "^1.1.0", + "rimraf": "^2.5.2", + "size-table": "^0.2.0", + "tap-spec": "^4.1.1", + "tape": "^4.5.1" + }, + "dependencies": {} +} diff --git a/node_modules/asynckit/parallel.js b/node_modules/asynckit/parallel.js new file mode 100644 index 0000000..3c50344 --- /dev/null +++ b/node_modules/asynckit/parallel.js @@ -0,0 +1,43 @@ +var iterate = require('./lib/iterate.js') + , initState = require('./lib/state.js') + , terminator = require('./lib/terminator.js') + ; + +// Public API +module.exports = parallel; + +/** + * Runs iterator over provided array elements in parallel + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {function} - jobs terminator + */ +function parallel(list, iterator, callback) +{ + var state = initState(list); + + while (state.index < (state['keyedList'] || list).length) + { + iterate(list, iterator, state, function(error, result) + { + if (error) + { + callback(error, result); + return; + } + + // looks like it's the last one + if (Object.keys(state.jobs).length === 0) + { + callback(null, state.results); + return; + } + }); + + state.index++; + } + + return terminator.bind(state, callback); +} diff --git a/node_modules/asynckit/serial.js b/node_modules/asynckit/serial.js new file mode 100644 index 0000000..6cd949a --- /dev/null +++ b/node_modules/asynckit/serial.js @@ -0,0 +1,17 @@ +var serialOrdered = require('./serialOrdered.js'); + +// Public API +module.exports = serial; + +/** + * Runs iterator over provided array elements in series + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} callback - invoked when all elements processed + * @returns {function} - jobs terminator + */ +function serial(list, iterator, callback) +{ + return serialOrdered(list, iterator, null, callback); +} diff --git a/node_modules/asynckit/serialOrdered.js b/node_modules/asynckit/serialOrdered.js new file mode 100644 index 0000000..607eafe --- /dev/null +++ b/node_modules/asynckit/serialOrdered.js @@ -0,0 +1,75 @@ +var iterate = require('./lib/iterate.js') + , initState = require('./lib/state.js') + , terminator = require('./lib/terminator.js') + ; + +// Public API +module.exports = serialOrdered; +// sorting helpers +module.exports.ascending = ascending; +module.exports.descending = descending; + +/** + * Runs iterator over provided sorted array elements in series + * + * @param {array|object} list - array or object (named list) to iterate over + * @param {function} iterator - iterator to run + * @param {function} sortMethod - custom sort function + * @param {function} callback - invoked when all elements processed + * @returns {function} - jobs terminator + */ +function serialOrdered(list, iterator, sortMethod, callback) +{ + var state = initState(list, sortMethod); + + iterate(list, iterator, state, function iteratorHandler(error, result) + { + if (error) + { + callback(error, result); + return; + } + + state.index++; + + // are we there yet? + if (state.index < (state['keyedList'] || list).length) + { + iterate(list, iterator, state, iteratorHandler); + return; + } + + // done here + callback(null, state.results); + }); + + return terminator.bind(state, callback); +} + +/* + * -- Sort methods + */ + +/** + * sort helper to sort array elements in ascending order + * + * @param {mixed} a - an item to compare + * @param {mixed} b - an item to compare + * @returns {number} - comparison result + */ +function ascending(a, b) +{ + return a < b ? -1 : a > b ? 1 : 0; +} + +/** + * sort helper to sort array elements in descending order + * + * @param {mixed} a - an item to compare + * @param {mixed} b - an item to compare + * @returns {number} - comparison result + */ +function descending(a, b) +{ + return -1 * ascending(a, b); +} diff --git a/node_modules/asynckit/stream.js b/node_modules/asynckit/stream.js new file mode 100644 index 0000000..d43465f --- /dev/null +++ b/node_modules/asynckit/stream.js @@ -0,0 +1,21 @@ +var inherits = require('util').inherits + , Readable = require('stream').Readable + , ReadableAsyncKit = require('./lib/readable_asynckit.js') + , ReadableParallel = require('./lib/readable_parallel.js') + , ReadableSerial = require('./lib/readable_serial.js') + , ReadableSerialOrdered = require('./lib/readable_serial_ordered.js') + ; + +// API +module.exports = +{ + parallel : ReadableParallel, + serial : ReadableSerial, + serialOrdered : ReadableSerialOrdered, +}; + +inherits(ReadableAsyncKit, Readable); + +inherits(ReadableParallel, ReadableAsyncKit); +inherits(ReadableSerial, ReadableAsyncKit); +inherits(ReadableSerialOrdered, ReadableAsyncKit); diff --git a/node_modules/axios/CHANGELOG.md b/node_modules/axios/CHANGELOG.md new file mode 100644 index 0000000..c227a1d --- /dev/null +++ b/node_modules/axios/CHANGELOG.md @@ -0,0 +1,1220 @@ +# Changelog + +# [1.10.0](https://github.com/axios/axios/compare/v1.9.0...v1.10.0) (2025-06-14) + + +### Bug Fixes + +* **adapter:** pass fetchOptions to fetch function ([#6883](https://github.com/axios/axios/issues/6883)) ([0f50af8](https://github.com/axios/axios/commit/0f50af8e076b7fb403844789bd5e812dedcaf4ed)) +* **form-data:** convert boolean values to strings in FormData serialization ([#6917](https://github.com/axios/axios/issues/6917)) ([5064b10](https://github.com/axios/axios/commit/5064b108de336ff34862650709761b8a96d26be0)) +* **package:** add module entry point for React Native; ([#6933](https://github.com/axios/axios/issues/6933)) ([3d343b8](https://github.com/axios/axios/commit/3d343b86dc4fd0eea0987059c5af04327c7ae304)) + + +### Features + +* **types:** improved fetchOptions interface ([#6867](https://github.com/axios/axios/issues/6867)) ([63f1fce](https://github.com/axios/axios/commit/63f1fce233009f5db1abf2586c145825ac98c3d7)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+30/-19 (#6933 #6920 #6893 #6892 )") +- avatar [Noritaka Kobayashi](https://github.com/noritaka1166 "+2/-6 (#6922 #6923 )") +- avatar [Dimitrios Lazanas](https://github.com/dimitry-lzs "+4/-0 (#6917 )") +- avatar [Adrian Knapp](https://github.com/AdrianKnapp "+2/-2 (#6867 )") +- avatar [Howie Zhao](https://github.com/howiezhao "+3/-1 (#6872 )") +- avatar [Uhyeon Park](https://github.com/warpdev "+1/-1 (#6883 )") +- avatar [Sampo Silvennoinen](https://github.com/stscoundrel "+1/-1 (#6913 )") + +# [1.9.0](https://github.com/axios/axios/compare/v1.8.4...v1.9.0) (2025-04-24) + + +### Bug Fixes + +* **core:** fix the Axios constructor implementation to treat the config argument as optional; ([#6881](https://github.com/axios/axios/issues/6881)) ([6c5d4cd](https://github.com/axios/axios/commit/6c5d4cd69286868059c5e52d45085cb9a894a983)) +* **fetch:** fixed ERR_NETWORK mapping for Safari browsers; ([#6767](https://github.com/axios/axios/issues/6767)) ([dfe8411](https://github.com/axios/axios/commit/dfe8411c9a082c3d068bdd1f8d6e73054f387f45)) +* **headers:** allow iterable objects to be a data source for the set method; ([#6873](https://github.com/axios/axios/issues/6873)) ([1b1f9cc](https://github.com/axios/axios/commit/1b1f9ccdc15f1ea745160ec9a5223de9db4673bc)) +* **headers:** fix `getSetCookie` by using 'get' method for caseless access; ([#6874](https://github.com/axios/axios/issues/6874)) ([d4f7df4](https://github.com/axios/axios/commit/d4f7df4b304af8b373488fdf8e830793ff843eb9)) +* **headers:** fixed support for setting multiple header values from an iterated source; ([#6885](https://github.com/axios/axios/issues/6885)) ([f7a3b5e](https://github.com/axios/axios/commit/f7a3b5e0f7e5e127b97defa92a132fbf1b55cf15)) +* **http:** send minimal end multipart boundary ([#6661](https://github.com/axios/axios/issues/6661)) ([987d2e2](https://github.com/axios/axios/commit/987d2e2dd3b362757550f36eab875e60640b6ddc)) +* **types:** fix autocomplete for adapter config ([#6855](https://github.com/axios/axios/issues/6855)) ([e61a893](https://github.com/axios/axios/commit/e61a8934d8f94dd429a2f309b48c67307c700df0)) + + +### Features + +* **AxiosHeaders:** add getSetCookie method to retrieve set-cookie headers values ([#5707](https://github.com/axios/axios/issues/5707)) ([80ea756](https://github.com/axios/axios/commit/80ea756e72bcf53110fa792f5d7ab76e8b11c996)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+200/-34 (#6890 #6889 #6888 #6885 #6881 #6767 #6874 #6873 )") +- avatar [Jay](https://github.com/jasonsaayman "+26/-1 ()") +- avatar [Willian Agostini](https://github.com/WillianAgostini "+21/-0 (#5707 )") +- avatar [George Cheng](https://github.com/Gerhut "+3/-3 (#5096 )") +- avatar [FatahChan](https://github.com/FatahChan "+2/-2 (#6855 )") +- avatar [Ionuț G. Stan](https://github.com/igstan "+1/-1 (#6661 )") + +## [1.8.4](https://github.com/axios/axios/compare/v1.8.3...v1.8.4) (2025-03-19) + + +### Bug Fixes + +* **buildFullPath:** handle `allowAbsoluteUrls: false` without `baseURL` ([#6833](https://github.com/axios/axios/issues/6833)) ([f10c2e0](https://github.com/axios/axios/commit/f10c2e0de7fde0051f848609a29c2906d0caa1d9)) + +### Contributors to this release + +- avatar [Marc Hassan](https://github.com/mhassan1 "+5/-1 (#6833 )") + +## [1.8.3](https://github.com/axios/axios/compare/v1.8.2...v1.8.3) (2025-03-10) + + +### Bug Fixes + +* add missing type for allowAbsoluteUrls ([#6818](https://github.com/axios/axios/issues/6818)) ([10fa70e](https://github.com/axios/axios/commit/10fa70ef14fe39558b15a179f0e82f5f5e5d11b2)) +* **xhr/fetch:** pass `allowAbsoluteUrls` to `buildFullPath` in `xhr` and `fetch` adapters ([#6814](https://github.com/axios/axios/issues/6814)) ([ec159e5](https://github.com/axios/axios/commit/ec159e507bdf08c04ba1a10fe7710094e9e50ec9)) + +### Contributors to this release + +- avatar [Ashcon Partovi](https://github.com/Electroid "+6/-0 (#6811 )") +- avatar [StefanBRas](https://github.com/StefanBRas "+4/-0 (#6818 )") +- avatar [Marc Hassan](https://github.com/mhassan1 "+2/-2 (#6814 )") + +## [1.8.2](https://github.com/axios/axios/compare/v1.8.1...v1.8.2) (2025-03-07) + + +### Bug Fixes + +* **http-adapter:** add allowAbsoluteUrls to path building ([#6810](https://github.com/axios/axios/issues/6810)) ([fb8eec2](https://github.com/axios/axios/commit/fb8eec214ce7744b5ca787f2c3b8339b2f54b00f)) + +### Contributors to this release + +- avatar [Fasoro-Joseph Alexander](https://github.com/lexcorp16 "+1/-1 (#6810 )") + +## [1.8.1](https://github.com/axios/axios/compare/v1.8.0...v1.8.1) (2025-02-26) + + +### Bug Fixes + +* **utils:** move `generateString` to platform utils to avoid importing crypto module into client builds; ([#6789](https://github.com/axios/axios/issues/6789)) ([36a5a62](https://github.com/axios/axios/commit/36a5a620bec0b181451927f13ac85b9888b86cec)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+51/-47 (#6789 )") + +# [1.8.0](https://github.com/axios/axios/compare/v1.7.9...v1.8.0) (2025-02-25) + + +### Bug Fixes + +* **examples:** application crashed when navigating examples in browser ([#5938](https://github.com/axios/axios/issues/5938)) ([1260ded](https://github.com/axios/axios/commit/1260ded634ec101dd5ed05d3b70f8e8f899dba6c)) +* missing word in SUPPORT_QUESTION.yml ([#6757](https://github.com/axios/axios/issues/6757)) ([1f890b1](https://github.com/axios/axios/commit/1f890b13f2c25a016f3c84ae78efb769f244133e)) +* **utils:** replace getRandomValues with crypto module ([#6788](https://github.com/axios/axios/issues/6788)) ([23a25af](https://github.com/axios/axios/commit/23a25af0688d1db2c396deb09229d2271cc24f6c)) + + +### Features + +* Add config for ignoring absolute URLs ([#5902](https://github.com/axios/axios/issues/5902)) ([#6192](https://github.com/axios/axios/issues/6192)) ([32c7bcc](https://github.com/axios/axios/commit/32c7bcc0f233285ba27dec73a4b1e81fb7a219b3)) + + +### Reverts + +* Revert "chore: expose fromDataToStream to be consumable (#6731)" (#6732) ([1317261](https://github.com/axios/axios/commit/1317261125e9c419fe9f126867f64d28f9c1efda)), closes [#6731](https://github.com/axios/axios/issues/6731) [#6732](https://github.com/axios/axios/issues/6732) + + +### BREAKING CHANGES + +* code relying on the above will now combine the URLs instead of prefer request URL + +* feat: add config option for allowing absolute URLs + +* fix: add default value for allowAbsoluteUrls in buildFullPath + +* fix: typo in flow control when setting allowAbsoluteUrls + +### Contributors to this release + +- avatar [Michael Toscano](https://github.com/GethosTheWalrus "+42/-8 (#6192 )") +- avatar [Willian Agostini](https://github.com/WillianAgostini "+26/-3 (#6788 #6777 )") +- avatar [Naron](https://github.com/naronchen "+27/-0 (#5901 )") +- avatar [shravan || श्रvan](https://github.com/shravan20 "+7/-3 (#6116 )") +- avatar [Justin Dhillon](https://github.com/justindhillon "+0/-7 (#6312 )") +- avatar [yionr](https://github.com/yionr "+5/-1 (#6129 )") +- avatar [Shin'ya Ueoka](https://github.com/ueokande "+3/-3 (#5935 )") +- avatar [Dan Dascalescu](https://github.com/dandv "+3/-3 (#5908 #6757 )") +- avatar [Nitin Ramnani](https://github.com/NitinRamnani "+2/-2 (#5938 )") +- avatar [Shay Molcho](https://github.com/shaymolcho "+2/-2 (#6770 )") +- avatar [Jay](https://github.com/jasonsaayman "+0/-3 (#6732 )") +- fancy45daddy +- avatar [Habip Akyol](https://github.com/habipakyol "+1/-1 (#6030 )") +- avatar [Bailey Lissington](https://github.com/llamington "+1/-1 (#6771 )") +- avatar [Bernardo da Eira Duarte](https://github.com/bernardoduarte "+1/-1 (#6480 )") +- avatar [Shivam Batham](https://github.com/Shivam-Batham "+1/-1 (#5949 )") +- avatar [Lipin Kariappa](https://github.com/lipinnnnn "+1/-1 (#5936 )") + +## [1.7.9](https://github.com/axios/axios/compare/v1.7.8...v1.7.9) (2024-12-04) + + +### Reverts + +* Revert "fix(types): export CJS types from ESM (#6218)" (#6729) ([c44d2f2](https://github.com/axios/axios/commit/c44d2f2316ad289b38997657248ba10de11deb6c)), closes [#6218](https://github.com/axios/axios/issues/6218) [#6729](https://github.com/axios/axios/issues/6729) + +### Contributors to this release + +- avatar [Jay](https://github.com/jasonsaayman "+596/-108 (#6729 )") + +## [1.7.8](https://github.com/axios/axios/compare/v1.7.7...v1.7.8) (2024-11-25) + + +### Bug Fixes + +* allow passing a callback as paramsSerializer to buildURL ([#6680](https://github.com/axios/axios/issues/6680)) ([eac4619](https://github.com/axios/axios/commit/eac4619fe2e0926e876cd260ee21e3690381dbb5)) +* **core:** fixed config merging bug ([#6668](https://github.com/axios/axios/issues/6668)) ([5d99fe4](https://github.com/axios/axios/commit/5d99fe4491202a6268c71e5dcc09192359d73cea)) +* fixed width form to not shrink after 'Send Request' button is clicked ([#6644](https://github.com/axios/axios/issues/6644)) ([7ccd5fd](https://github.com/axios/axios/commit/7ccd5fd42402102d38712c32707bf055be72ab54)) +* **http:** add support for File objects as payload in http adapter ([#6588](https://github.com/axios/axios/issues/6588)) ([#6605](https://github.com/axios/axios/issues/6605)) ([6841d8d](https://github.com/axios/axios/commit/6841d8d18ddc71cc1bd202ffcfddb3f95622eef3)) +* **http:** fixed proxy-from-env module import ([#5222](https://github.com/axios/axios/issues/5222)) ([12b3295](https://github.com/axios/axios/commit/12b32957f1258aee94ef859809ed39f8f88f9dfa)) +* **http:** use `globalThis.TextEncoder` when available ([#6634](https://github.com/axios/axios/issues/6634)) ([df956d1](https://github.com/axios/axios/commit/df956d18febc9100a563298dfdf0f102c3d15410)) +* ios11 breaks when build ([#6608](https://github.com/axios/axios/issues/6608)) ([7638952](https://github.com/axios/axios/commit/763895270f7b50c7c780c3c9807ae8635de952cd)) +* **types:** add missing types for mergeConfig function ([#6590](https://github.com/axios/axios/issues/6590)) ([00de614](https://github.com/axios/axios/commit/00de614cd07b7149af335e202aef0e076c254f49)) +* **types:** export CJS types from ESM ([#6218](https://github.com/axios/axios/issues/6218)) ([c71811b](https://github.com/axios/axios/commit/c71811b00f2fcff558e4382ba913bdac4ad7200e)) +* updated stream aborted error message to be more clear ([#6615](https://github.com/axios/axios/issues/6615)) ([cc3217a](https://github.com/axios/axios/commit/cc3217a612024d83a663722a56d7a98d8759c6d5)) +* use URL API instead of DOM to fix a potential vulnerability warning; ([#6714](https://github.com/axios/axios/issues/6714)) ([0a8d6e1](https://github.com/axios/axios/commit/0a8d6e19da5b9899a2abafaaa06a75ee548597db)) + +### Contributors to this release + +- avatar [Remco Haszing](https://github.com/remcohaszing "+108/-596 (#6218 )") +- avatar [Jay](https://github.com/jasonsaayman "+281/-19 (#6640 #6619 )") +- avatar [Aayush Yadav](https://github.com/aayushyadav020 "+124/-111 (#6617 )") +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+12/-65 (#6714 )") +- avatar [Ell Bradshaw](https://github.com/cincodenada "+29/-0 (#6489 )") +- avatar [Amit Saini](https://github.com/amitsainii "+13/-3 (#5237 )") +- avatar [Tommaso Paulon](https://github.com/guuido "+14/-1 (#6680 )") +- avatar [Akki](https://github.com/Aakash-Rana "+5/-5 (#6668 )") +- avatar [Sampo Silvennoinen](https://github.com/stscoundrel "+3/-3 (#6633 )") +- avatar [Kasper Isager Dalsgarð](https://github.com/kasperisager "+2/-2 (#6634 )") +- avatar [Christian Clauss](https://github.com/cclauss "+4/-0 (#6683 )") +- avatar [Pavan Welihinda](https://github.com/pavan168 "+2/-2 (#5222 )") +- avatar [Taylor Flatt](https://github.com/taylorflatt "+2/-2 (#6615 )") +- avatar [Kenzo Wada](https://github.com/Kenzo-Wada "+2/-2 (#6608 )") +- avatar [Ngole Lawson](https://github.com/echelonnought "+3/-0 (#6644 )") +- avatar [Haven](https://github.com/Baoyx007 "+3/-0 (#6590 )") +- avatar [Shrivali Dutt](https://github.com/shrivalidutt "+1/-1 (#6637 )") +- avatar [Henco Appel](https://github.com/hencoappel "+1/-1 (#6605 )") + +## [1.7.7](https://github.com/axios/axios/compare/v1.7.6...v1.7.7) (2024-08-31) + + +### Bug Fixes + +* **fetch:** fix stream handling in Safari by fallback to using a stream reader instead of an async iterator; ([#6584](https://github.com/axios/axios/issues/6584)) ([d198085](https://github.com/axios/axios/commit/d1980854fee1765cd02fa0787adf5d6e34dd9dcf)) +* **http:** fixed support for IPv6 literal strings in url ([#5731](https://github.com/axios/axios/issues/5731)) ([364993f](https://github.com/axios/axios/commit/364993f0d8bc6e0e06f76b8a35d2d0a35cab054c)) + +### Contributors to this release + +- avatar [Rishi556](https://github.com/Rishi556 "+39/-1 (#5731 )") +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+27/-7 (#6584 )") + +## [1.7.6](https://github.com/axios/axios/compare/v1.7.5...v1.7.6) (2024-08-30) + + +### Bug Fixes + +* **fetch:** fix content length calculation for FormData payload; ([#6524](https://github.com/axios/axios/issues/6524)) ([085f568](https://github.com/axios/axios/commit/085f56861a83e9ac02c140ad9d68dac540dfeeaa)) +* **fetch:** optimize signals composing logic; ([#6582](https://github.com/axios/axios/issues/6582)) ([df9889b](https://github.com/axios/axios/commit/df9889b83c2cc37e9e6189675a73ab70c60f031f)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+98/-46 (#6582 )") +- avatar [Jacques Germishuys](https://github.com/jacquesg "+5/-1 (#6524 )") +- avatar [kuroino721](https://github.com/kuroino721 "+3/-1 (#6575 )") + +## [1.7.5](https://github.com/axios/axios/compare/v1.7.4...v1.7.5) (2024-08-23) + + +### Bug Fixes + +* **adapter:** fix undefined reference to hasBrowserEnv ([#6572](https://github.com/axios/axios/issues/6572)) ([7004707](https://github.com/axios/axios/commit/7004707c4180b416341863bd86913fe4fc2f1df1)) +* **core:** add the missed implementation of AxiosError#status property; ([#6573](https://github.com/axios/axios/issues/6573)) ([6700a8a](https://github.com/axios/axios/commit/6700a8adac06942205f6a7a21421ecb36c4e0852)) +* **core:** fix `ReferenceError: navigator is not defined` for custom environments; ([#6567](https://github.com/axios/axios/issues/6567)) ([fed1a4b](https://github.com/axios/axios/commit/fed1a4b2d78ed4a588c84e09d32749ed01dc2794)) +* **fetch:** fix credentials handling in Cloudflare workers ([#6533](https://github.com/axios/axios/issues/6533)) ([550d885](https://github.com/axios/axios/commit/550d885eb90fd156add7b93bbdc54d30d2f9a98d)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+187/-83 (#6573 #6567 #6566 #6564 #6563 #6557 #6556 #6555 #6554 #6552 )") +- avatar [Antonin Bas](https://github.com/antoninbas "+6/-6 (#6572 )") +- avatar [Hans Otto Wirtz](https://github.com/hansottowirtz "+4/-1 (#6533 )") + +## [1.7.4](https://github.com/axios/axios/compare/v1.7.3...v1.7.4) (2024-08-13) + + +### Bug Fixes + +* **sec:** CVE-2024-39338 ([#6539](https://github.com/axios/axios/issues/6539)) ([#6543](https://github.com/axios/axios/issues/6543)) ([6b6b605](https://github.com/axios/axios/commit/6b6b605eaf73852fb2dae033f1e786155959de3a)) +* **sec:** disregard protocol-relative URL to remediate SSRF ([#6539](https://github.com/axios/axios/issues/6539)) ([07a661a](https://github.com/axios/axios/commit/07a661a2a6b9092c4aa640dcc7f724ec5e65bdda)) + +### Contributors to this release + +- avatar [Lev Pachmanov](https://github.com/levpachmanov "+47/-11 (#6543 )") +- avatar [Đỗ Trọng Hải](https://github.com/hainenber "+49/-4 (#6539 )") + +## [1.7.3](https://github.com/axios/axios/compare/v1.7.2...v1.7.3) (2024-08-01) + + +### Bug Fixes + +* **adapter:** fix progress event emitting; ([#6518](https://github.com/axios/axios/issues/6518)) ([e3c76fc](https://github.com/axios/axios/commit/e3c76fc9bdd03aa4d98afaf211df943e2031453f)) +* **fetch:** fix withCredentials request config ([#6505](https://github.com/axios/axios/issues/6505)) ([85d4d0e](https://github.com/axios/axios/commit/85d4d0ea0aae91082f04e303dec46510d1b4e787)) +* **xhr:** return original config on errors from XHR adapter ([#6515](https://github.com/axios/axios/issues/6515)) ([8966ee7](https://github.com/axios/axios/commit/8966ee7ea62ecbd6cfb39a905939bcdab5cf6388)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+211/-159 (#6518 #6519 )") +- avatar [Valerii Sidorenko](https://github.com/ValeraS "+3/-3 (#6515 )") +- avatar [prianYu](https://github.com/prianyu "+2/-2 (#6505 )") + +## [1.7.2](https://github.com/axios/axios/compare/v1.7.1...v1.7.2) (2024-05-21) + + +### Bug Fixes + +* **fetch:** enhance fetch API detection; ([#6413](https://github.com/axios/axios/issues/6413)) ([4f79aef](https://github.com/axios/axios/commit/4f79aef81b7c4644328365bfc33acf0a9ef595bc)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+3/-3 (#6413 )") + +## [1.7.1](https://github.com/axios/axios/compare/v1.7.0...v1.7.1) (2024-05-20) + + +### Bug Fixes + +* **fetch:** fixed ReferenceError issue when TextEncoder is not available in the environment; ([#6410](https://github.com/axios/axios/issues/6410)) ([733f15f](https://github.com/axios/axios/commit/733f15fe5bd2d67e1fadaee82e7913b70d45dc5e)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+14/-9 (#6410 )") + +# [1.7.0](https://github.com/axios/axios/compare/v1.7.0-beta.2...v1.7.0) (2024-05-19) + + +### Features + +* **adapter:** add fetch adapter; ([#6371](https://github.com/axios/axios/issues/6371)) ([a3ff99b](https://github.com/axios/axios/commit/a3ff99b59d8ec2ab5dd049e68c043617a4072e42)) + +### Bug Fixes + +* **core/axios:** handle un-writable error stack ([#6362](https://github.com/axios/axios/issues/6362)) ([81e0455](https://github.com/axios/axios/commit/81e0455b7b57fbaf2be16a73ebe0e6591cc6d8f9)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+1015/-127 (#6371 )") +- avatar [Jay](https://github.com/jasonsaayman "+30/-14 ()") +- avatar [Alexandre ABRIOUX](https://github.com/alexandre-abrioux "+56/-6 (#6362 )") + +# [1.7.0-beta.2](https://github.com/axios/axios/compare/v1.7.0-beta.1...v1.7.0-beta.2) (2024-05-19) + + +### Bug Fixes + +* **fetch:** capitalize HTTP method names; ([#6395](https://github.com/axios/axios/issues/6395)) ([ad3174a](https://github.com/axios/axios/commit/ad3174a3515c3c2573f4bcb94818d582826f3914)) +* **fetch:** fix & optimize progress capturing for cases when the request data has a nullish value or zero data length ([#6400](https://github.com/axios/axios/issues/6400)) ([95a3e8e](https://github.com/axios/axios/commit/95a3e8e346cfd6a5548e171f2341df3235d0e26b)) +* **fetch:** fix headers getting from a stream response; ([#6401](https://github.com/axios/axios/issues/6401)) ([870e0a7](https://github.com/axios/axios/commit/870e0a76f60d0094774a6a63fa606eec52a381af)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+99/-46 (#6405 #6404 #6401 #6400 #6395 )") + +# [1.7.0-beta.1](https://github.com/axios/axios/compare/v1.7.0-beta.0...v1.7.0-beta.1) (2024-05-07) + + +### Bug Fixes + +* **core/axios:** handle un-writable error stack ([#6362](https://github.com/axios/axios/issues/6362)) ([81e0455](https://github.com/axios/axios/commit/81e0455b7b57fbaf2be16a73ebe0e6591cc6d8f9)) +* **fetch:** fix cases when ReadableStream or Response.body are not available; ([#6377](https://github.com/axios/axios/issues/6377)) ([d1d359d](https://github.com/axios/axios/commit/d1d359da347704e8b28d768e61515a3e96c5b072)) +* **fetch:** treat fetch-related TypeError as an AxiosError.ERR_NETWORK error; ([#6380](https://github.com/axios/axios/issues/6380)) ([bb5f9a5](https://github.com/axios/axios/commit/bb5f9a5ab768452de9e166dc28d0ffc234245ef1)) + +### Contributors to this release + +- avatar [Alexandre ABRIOUX](https://github.com/alexandre-abrioux "+56/-6 (#6362 )") +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+42/-17 (#6380 #6377 )") + +# [1.7.0-beta.0](https://github.com/axios/axios/compare/v1.6.8...v1.7.0-beta.0) (2024-04-28) + + +### Features + +* **adapter:** add fetch adapter; ([#6371](https://github.com/axios/axios/issues/6371)) ([a3ff99b](https://github.com/axios/axios/commit/a3ff99b59d8ec2ab5dd049e68c043617a4072e42)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+1015/-127 (#6371 )") +- avatar [Jay](https://github.com/jasonsaayman "+30/-14 ()") + +## [1.6.8](https://github.com/axios/axios/compare/v1.6.7...v1.6.8) (2024-03-15) + + +### Bug Fixes + +* **AxiosHeaders:** fix AxiosHeaders conversion to an object during config merging ([#6243](https://github.com/axios/axios/issues/6243)) ([2656612](https://github.com/axios/axios/commit/2656612bc10fe2757e9832b708ed773ab340b5cb)) +* **import:** use named export for EventEmitter; ([7320430](https://github.com/axios/axios/commit/7320430aef2e1ba2b89488a0eaf42681165498b1)) +* **vulnerability:** update follow-redirects to 1.15.6 ([#6300](https://github.com/axios/axios/issues/6300)) ([8786e0f](https://github.com/axios/axios/commit/8786e0ff55a8c68d4ca989801ad26df924042e27)) + +### Contributors to this release + +- avatar [Jay](https://github.com/jasonsaayman "+4572/-3446 (#6238 )") +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+30/-0 (#6231 )") +- avatar [Mitchell](https://github.com/Creaous "+9/-9 (#6300 )") +- avatar [Emmanuel](https://github.com/mannoeu "+2/-2 (#6196 )") +- avatar [Lucas Keller](https://github.com/ljkeller "+3/-0 (#6194 )") +- avatar [Aditya Mogili](https://github.com/ADITYA-176 "+1/-1 ()") +- avatar [Miroslav Petrov](https://github.com/petrovmiroslav "+1/-1 (#6243 )") + +## [1.6.7](https://github.com/axios/axios/compare/v1.6.6...v1.6.7) (2024-01-25) + + +### Bug Fixes + +* capture async stack only for rejections with native error objects; ([#6203](https://github.com/axios/axios/issues/6203)) ([1a08f90](https://github.com/axios/axios/commit/1a08f90f402336e4d00e9ee82f211c6adb1640b0)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+30/-26 (#6203 )") +- avatar [zhoulixiang](https://github.com/zh-lx "+0/-3 (#6186 )") + +## [1.6.6](https://github.com/axios/axios/compare/v1.6.5...v1.6.6) (2024-01-24) + + +### Bug Fixes + +* fixed missed dispatchBeforeRedirect argument ([#5778](https://github.com/axios/axios/issues/5778)) ([a1938ff](https://github.com/axios/axios/commit/a1938ff073fcb0f89011f001dfbc1fa1dc995e39)) +* wrap errors to improve async stack trace ([#5987](https://github.com/axios/axios/issues/5987)) ([123f354](https://github.com/axios/axios/commit/123f354b920f154a209ea99f76b7b2ef3d9ebbab)) + +### Contributors to this release + +- avatar [Ilya Priven](https://github.com/ikonst "+91/-8 (#5987 )") +- avatar [Zao Soula](https://github.com/zaosoula "+6/-6 (#5778 )") + +## [1.6.5](https://github.com/axios/axios/compare/v1.6.4...v1.6.5) (2024-01-05) + + +### Bug Fixes + +* **ci:** refactor notify action as a job of publish action; ([#6176](https://github.com/axios/axios/issues/6176)) ([0736f95](https://github.com/axios/axios/commit/0736f95ce8776366dc9ca569f49ba505feb6373c)) +* **dns:** fixed lookup error handling; ([#6175](https://github.com/axios/axios/issues/6175)) ([f4f2b03](https://github.com/axios/axios/commit/f4f2b039dd38eb4829e8583caede4ed6d2dd59be)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+41/-6 (#6176 #6175 )") +- avatar [Jay](https://github.com/jasonsaayman "+6/-1 ()") + +## [1.6.4](https://github.com/axios/axios/compare/v1.6.3...v1.6.4) (2024-01-03) + + +### Bug Fixes + +* **security:** fixed formToJSON prototype pollution vulnerability; ([#6167](https://github.com/axios/axios/issues/6167)) ([3c0c11c](https://github.com/axios/axios/commit/3c0c11cade045c4412c242b5727308cff9897a0e)) +* **security:** fixed security vulnerability in follow-redirects ([#6163](https://github.com/axios/axios/issues/6163)) ([75af1cd](https://github.com/axios/axios/commit/75af1cdff5b3a6ca3766d3d3afbc3115bb0811b8)) + +### Contributors to this release + +- avatar [Jay](https://github.com/jasonsaayman "+34/-6 ()") +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+34/-3 (#6172 #6167 )") +- avatar [Guy Nesher](https://github.com/gnesher "+10/-10 (#6163 )") + +## [1.6.3](https://github.com/axios/axios/compare/v1.6.2...v1.6.3) (2023-12-26) + + +### Bug Fixes + +* Regular Expression Denial of Service (ReDoS) ([#6132](https://github.com/axios/axios/issues/6132)) ([5e7ad38](https://github.com/axios/axios/commit/5e7ad38fb0f819fceb19fb2ee5d5d38f56aa837d)) + +### Contributors to this release + +- avatar [Jay](https://github.com/jasonsaayman "+15/-6 (#6145 )") +- avatar [Willian Agostini](https://github.com/WillianAgostini "+17/-2 (#6132 )") +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+3/-0 (#6084 )") + +## [1.6.2](https://github.com/axios/axios/compare/v1.6.1...v1.6.2) (2023-11-14) + + +### Features + +* **withXSRFToken:** added withXSRFToken option as a workaround to achieve the old `withCredentials` behavior; ([#6046](https://github.com/axios/axios/issues/6046)) ([cff9967](https://github.com/axios/axios/commit/cff996779b272a5e94c2b52f5503ccf668bc42dc)) + +### PRs +- feat(withXSRFToken): added withXSRFToken option as a workaround to achieve the old `withCredentials` behavior; ( [#6046](https://api.github.com/repos/axios/axios/pulls/6046) ) +``` + +📢 This PR added 'withXSRFToken' option as a replacement for old withCredentials behaviour. +You should now use withXSRFToken along with withCredential to get the old behavior. +This functionality is considered as a fix. +``` + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+271/-146 (#6081 #6080 #6079 #6078 #6046 #6064 #6063 )") +- avatar [Ng Choon Khon (CK)](https://github.com/ckng0221 "+4/-4 (#6073 )") +- avatar [Muhammad Noman](https://github.com/mnomanmemon "+2/-2 (#6048 )") + +## [1.6.1](https://github.com/axios/axios/compare/v1.6.0...v1.6.1) (2023-11-08) + + +### Bug Fixes + +* **formdata:** fixed content-type header normalization for non-standard browser environments; ([#6056](https://github.com/axios/axios/issues/6056)) ([dd465ab](https://github.com/axios/axios/commit/dd465ab22bbfa262c6567be6574bf46a057d5288)) +* **platform:** fixed emulated browser detection in node.js environment; ([#6055](https://github.com/axios/axios/issues/6055)) ([3dc8369](https://github.com/axios/axios/commit/3dc8369e505e32a4e12c22f154c55fd63ac67fbb)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+432/-65 (#6059 #6056 #6055 )") +- avatar [Fabian Meyer](https://github.com/meyfa "+5/-2 (#5835 )") + +### PRs +- feat(withXSRFToken): added withXSRFToken option as a workaround to achieve the old `withCredentials` behavior; ( [#6046](https://api.github.com/repos/axios/axios/pulls/6046) ) +``` + +📢 This PR added 'withXSRFToken' option as a replacement for old withCredentials behaviour. +You should now use withXSRFToken along with withCredential to get the old behavior. +This functionality is considered as a fix. +``` + +# [1.6.0](https://github.com/axios/axios/compare/v1.5.1...v1.6.0) (2023-10-26) + + +### Bug Fixes + +* **CSRF:** fixed CSRF vulnerability CVE-2023-45857 ([#6028](https://github.com/axios/axios/issues/6028)) ([96ee232](https://github.com/axios/axios/commit/96ee232bd3ee4de2e657333d4d2191cd389e14d0)) +* **dns:** fixed lookup function decorator to work properly in node v20; ([#6011](https://github.com/axios/axios/issues/6011)) ([5aaff53](https://github.com/axios/axios/commit/5aaff532a6b820bb9ab6a8cd0f77131b47e2adb8)) +* **types:** fix AxiosHeaders types; ([#5931](https://github.com/axios/axios/issues/5931)) ([a1c8ad0](https://github.com/axios/axios/commit/a1c8ad008b3c13d53e135bbd0862587fb9d3fc09)) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+449/-114 (#6032 #6021 #6011 #5932 #5931 )") +- avatar [Valentin Panov](https://github.com/valentin-panov "+4/-4 (#6028 )") +- avatar [Rinku Chaudhari](https://github.com/therealrinku "+1/-1 (#5889 )") + +## [1.5.1](https://github.com/axios/axios/compare/v1.5.0...v1.5.1) (2023-09-26) + + +### Bug Fixes + +* **adapters:** improved adapters loading logic to have clear error messages; ([#5919](https://github.com/axios/axios/issues/5919)) ([e410779](https://github.com/axios/axios/commit/e4107797a7a1376f6209fbecfbbce73d3faa7859)) +* **formdata:** fixed automatic addition of the `Content-Type` header for FormData in non-browser environments; ([#5917](https://github.com/axios/axios/issues/5917)) ([bc9af51](https://github.com/axios/axios/commit/bc9af51b1886d1b3529617702f2a21a6c0ed5d92)) +* **headers:** allow `content-encoding` header to handle case-insensitive values ([#5890](https://github.com/axios/axios/issues/5890)) ([#5892](https://github.com/axios/axios/issues/5892)) ([4c89f25](https://github.com/axios/axios/commit/4c89f25196525e90a6e75eda9cb31ae0a2e18acd)) +* **types:** removed duplicated code ([9e62056](https://github.com/axios/axios/commit/9e6205630e1c9cf863adf141c0edb9e6d8d4b149)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+89/-18 (#5919 #5917 )") +- avatar [David Dallas](https://github.com/DavidJDallas "+11/-5 ()") +- avatar [Sean Sattler](https://github.com/fb-sean "+2/-8 ()") +- avatar [Mustafa Ateş Uzun](https://github.com/0o001 "+4/-4 ()") +- avatar [Przemyslaw Motacki](https://github.com/sfc-gh-pmotacki "+2/-1 (#5892 )") +- avatar [Michael Di Prisco](https://github.com/Cadienvan "+1/-1 ()") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +# [1.5.0](https://github.com/axios/axios/compare/v1.4.0...v1.5.0) (2023-08-26) + + +### Bug Fixes + +* **adapter:** make adapter loading error more clear by using platform-specific adapters explicitly ([#5837](https://github.com/axios/axios/issues/5837)) ([9a414bb](https://github.com/axios/axios/commit/9a414bb6c81796a95c6c7fe668637825458e8b6d)) +* **dns:** fixed `cacheable-lookup` integration; ([#5836](https://github.com/axios/axios/issues/5836)) ([b3e327d](https://github.com/axios/axios/commit/b3e327dcc9277bdce34c7ef57beedf644b00d628)) +* **headers:** added support for setting header names that overlap with class methods; ([#5831](https://github.com/axios/axios/issues/5831)) ([d8b4ca0](https://github.com/axios/axios/commit/d8b4ca0ea5f2f05efa4edfe1e7684593f9f68273)) +* **headers:** fixed common Content-Type header merging; ([#5832](https://github.com/axios/axios/issues/5832)) ([8fda276](https://github.com/axios/axios/commit/8fda2766b1e6bcb72c3fabc146223083ef13ce17)) + + +### Features + +* export getAdapter function ([#5324](https://github.com/axios/axios/issues/5324)) ([ca73eb8](https://github.com/axios/axios/commit/ca73eb878df0ae2dace81fe3a7f1fb5986231bf1)) +* **export:** export adapters without `unsafe` prefix ([#5839](https://github.com/axios/axios/issues/5839)) ([1601f4a](https://github.com/axios/axios/commit/1601f4a27a81ab47fea228f1e244b2c4e3ce28bf)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+66/-29 (#5839 #5837 #5836 #5832 #5831 )") +- avatar [夜葬](https://github.com/geekact "+42/-0 (#5324 )") +- avatar [Jonathan Budiman](https://github.com/JBudiman00 "+30/-0 (#5788 )") +- avatar [Michael Di Prisco](https://github.com/Cadienvan "+3/-5 (#5791 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +# [1.4.0](https://github.com/axios/axios/compare/v1.3.6...v1.4.0) (2023-04-27) + + +### Bug Fixes + +* **formdata:** add `multipart/form-data` content type for FormData payload on custom client environments; ([#5678](https://github.com/axios/axios/issues/5678)) ([bbb61e7](https://github.com/axios/axios/commit/bbb61e70cb1185adfb1cbbb86eaf6652c48d89d1)) +* **package:** export package internals with unsafe path prefix; ([#5677](https://github.com/axios/axios/issues/5677)) ([df38c94](https://github.com/axios/axios/commit/df38c949f26414d88ba29ec1e353c4d4f97eaf09)) + + +### Features + +* **dns:** added support for a custom lookup function; ([#5339](https://github.com/axios/axios/issues/5339)) ([2701911](https://github.com/axios/axios/commit/2701911260a1faa5cc5e1afe437121b330a3b7bb)) +* **types:** export `AxiosHeaderValue` type. ([#5525](https://github.com/axios/axios/issues/5525)) ([726f1c8](https://github.com/axios/axios/commit/726f1c8e00cffa0461a8813a9bdcb8f8b9d762cf)) + + +### Performance Improvements + +* **merge-config:** optimize mergeConfig performance by avoiding duplicate key visits; ([#5679](https://github.com/axios/axios/issues/5679)) ([e6f7053](https://github.com/axios/axios/commit/e6f7053bf1a3e87cf1f9da8677e12e3fe829d68e)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+151/-16 (#5684 #5339 #5679 #5678 #5677 )") +- avatar [Arthur Fiorette](https://github.com/arthurfiorette "+19/-19 (#5525 )") +- avatar [PIYUSH NEGI](https://github.com/npiyush97 "+2/-18 (#5670 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.3.6](https://github.com/axios/axios/compare/v1.3.5...v1.3.6) (2023-04-19) + + +### Bug Fixes + +* **types:** added transport to RawAxiosRequestConfig ([#5445](https://github.com/axios/axios/issues/5445)) ([6f360a2](https://github.com/axios/axios/commit/6f360a2531d8d70363fd9becef6a45a323f170e2)) +* **utils:** make isFormData detection logic stricter to avoid unnecessary calling of the `toString` method on the target; ([#5661](https://github.com/axios/axios/issues/5661)) ([aa372f7](https://github.com/axios/axios/commit/aa372f7306295dfd1100c1c2c77ce95c95808e76)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+48/-10 (#5665 #5661 #5663 )") +- avatar [Michael Di Prisco](https://github.com/Cadienvan "+2/-0 (#5445 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.3.5](https://github.com/axios/axios/compare/v1.3.4...v1.3.5) (2023-04-05) + + +### Bug Fixes + +* **headers:** fixed isValidHeaderName to support full list of allowed characters; ([#5584](https://github.com/axios/axios/issues/5584)) ([e7decef](https://github.com/axios/axios/commit/e7decef6a99f4627e27ed9ea5b00ce8e201c3841)) +* **params:** re-added the ability to set the function as `paramsSerializer` config; ([#5633](https://github.com/axios/axios/issues/5633)) ([a56c866](https://github.com/axios/axios/commit/a56c8661209d5ce5a645a05f294a0e08a6c1f6b3)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+28/-10 (#5633 #5584 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.3.4](https://github.com/axios/axios/compare/v1.3.3...v1.3.4) (2023-02-22) + + +### Bug Fixes + +* **blob:** added a check to make sure the Blob class is available in the browser's global scope; ([#5548](https://github.com/axios/axios/issues/5548)) ([3772c8f](https://github.com/axios/axios/commit/3772c8fe74112a56e3e9551f894d899bc3a9443a)) +* **http:** fixed regression bug when handling synchronous errors inside the adapter; ([#5564](https://github.com/axios/axios/issues/5564)) ([a3b246c](https://github.com/axios/axios/commit/a3b246c9de5c3bc4b5a742e15add55b375479451)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+38/-26 (#5564 )") +- avatar [lcysgsg](https://github.com/lcysgsg "+4/-0 (#5548 )") +- avatar [Michael Di Prisco](https://github.com/Cadienvan "+3/-0 (#5444 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.3.3](https://github.com/axios/axios/compare/v1.3.2...v1.3.3) (2023-02-13) + + +### Bug Fixes + +* **formdata:** added a check to make sure the FormData class is available in the browser's global scope; ([#5545](https://github.com/axios/axios/issues/5545)) ([a6dfa72](https://github.com/axios/axios/commit/a6dfa72010db5ad52db8bd13c0f98e537e8fd05d)) +* **formdata:** fixed setting NaN as Content-Length for form payload in some cases; ([#5535](https://github.com/axios/axios/issues/5535)) ([c19f7bf](https://github.com/axios/axios/commit/c19f7bf770f90ae8307f4ea3104f227056912da1)) +* **headers:** fixed the filtering logic of the clear method; ([#5542](https://github.com/axios/axios/issues/5542)) ([ea87ebf](https://github.com/axios/axios/commit/ea87ebfe6d1699af072b9e7cd40faf8f14b0ab93)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+11/-7 (#5545 #5535 #5542 )") +- avatar [陈若枫](https://github.com/ruofee "+2/-2 (#5467 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.3.2](https://github.com/axios/axios/compare/v1.3.1...v1.3.2) (2023-02-03) + + +### Bug Fixes + +* **http:** treat http://localhost as base URL for relative paths to avoid `ERR_INVALID_URL` error; ([#5528](https://github.com/axios/axios/issues/5528)) ([128d56f](https://github.com/axios/axios/commit/128d56f4a0fb8f5f2ed6e0dd80bc9225fee9538c)) +* **http:** use explicit import instead of TextEncoder global; ([#5530](https://github.com/axios/axios/issues/5530)) ([6b3c305](https://github.com/axios/axios/commit/6b3c305fc40c56428e0afabedc6f4d29c2830f6f)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+2/-1 (#5530 #5528 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.3.1](https://github.com/axios/axios/compare/v1.3.0...v1.3.1) (2023-02-01) + + +### Bug Fixes + +* **formdata:** add hotfix to use the asynchronous API to compute the content-length header value; ([#5521](https://github.com/axios/axios/issues/5521)) ([96d336f](https://github.com/axios/axios/commit/96d336f527619f21da012fe1f117eeb53e5a2120)) +* **serializer:** fixed serialization of array-like objects; ([#5518](https://github.com/axios/axios/issues/5518)) ([08104c0](https://github.com/axios/axios/commit/08104c028c0f9353897b1b6691d74c440fd0c32d)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+27/-8 (#5521 #5518 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +# [1.3.0](https://github.com/axios/axios/compare/v1.2.6...v1.3.0) (2023-01-31) + + +### Bug Fixes + +* **headers:** fixed & optimized clear method; ([#5507](https://github.com/axios/axios/issues/5507)) ([9915635](https://github.com/axios/axios/commit/9915635c69d0ab70daca5738488421f67ca60959)) +* **http:** add zlib headers if missing ([#5497](https://github.com/axios/axios/issues/5497)) ([65e8d1e](https://github.com/axios/axios/commit/65e8d1e28ce829f47a837e45129730e541950d3c)) + + +### Features + +* **fomdata:** added support for spec-compliant FormData & Blob types; ([#5316](https://github.com/axios/axios/issues/5316)) ([6ac574e](https://github.com/axios/axios/commit/6ac574e00a06731288347acea1e8246091196953)) + +### Contributors to this release + +- avatar [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+352/-67 (#5514 #5512 #5510 #5509 #5508 #5316 #5507 )") +- avatar [ItsNotGoodName](https://github.com/ItsNotGoodName "+43/-2 (#5497 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.2.6](https://github.com/axios/axios/compare/v1.2.5...v1.2.6) (2023-01-28) + + +### Bug Fixes + +* **headers:** added missed Authorization accessor; ([#5502](https://github.com/axios/axios/issues/5502)) ([342c0ba](https://github.com/axios/axios/commit/342c0ba9a16ea50f5ed7d2366c5c1a2c877e3f26)) +* **types:** fixed `CommonRequestHeadersList` & `CommonResponseHeadersList` types to be private in commonJS; ([#5503](https://github.com/axios/axios/issues/5503)) ([5a3d0a3](https://github.com/axios/axios/commit/5a3d0a3234d77361a1bc7cedee2da1e11df08e2c)) + +### Contributors to this release + +- ![avatar](https://avatars.githubusercontent.com/u/12586868?v=4&s=16) [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+24/-9 (#5503 #5502 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.2.5](https://github.com/axios/axios/compare/v1.2.4...v1.2.5) (2023-01-26) + + +### Bug Fixes + +* **types:** fixed AxiosHeaders to handle spread syntax by making all methods non-enumerable; ([#5499](https://github.com/axios/axios/issues/5499)) ([580f1e8](https://github.com/axios/axios/commit/580f1e8033a61baa38149d59fd16019de3932c22)) + +### Contributors to this release + +- ![avatar](https://avatars.githubusercontent.com/u/12586868?v=4&s=16) [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+82/-54 (#5499 )") +- ![avatar](https://avatars.githubusercontent.com/u/20516159?v=4&s=16) [Elliot Ford](https://github.com/EFord36 "+1/-1 (#5462 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.2.4](https://github.com/axios/axios/compare/v1.2.3...v1.2.4) (2023-01-22) + + +### Bug Fixes + +* **types:** renamed `RawAxiosRequestConfig` back to `AxiosRequestConfig`; ([#5486](https://github.com/axios/axios/issues/5486)) ([2a71f49](https://github.com/axios/axios/commit/2a71f49bc6c68495fa419003a3107ed8bd703ad0)) +* **types:** fix `AxiosRequestConfig` generic; ([#5478](https://github.com/axios/axios/issues/5478)) ([9bce81b](https://github.com/axios/axios/commit/186ea062da8b7d578ae78b1a5c220986b9bce81b)) + +### Contributors to this release + +- ![avatar](https://avatars.githubusercontent.com/u/12586868?v=4&s=16) [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+242/-108 (#5486 #5482 )") +- ![avatar](https://avatars.githubusercontent.com/u/9430821?v=4&s=16) [Daniel Hillmann](https://github.com/hilleer "+1/-1 (#5478 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.2.3](https://github.com/axios/axios/compare/1.2.2...1.2.3) (2023-01-10) + + +### Bug Fixes + +* **types:** fixed AxiosRequestConfig header interface by refactoring it to RawAxiosRequestConfig; ([#5420](https://github.com/axios/axios/issues/5420)) ([0811963](https://github.com/axios/axios/commit/08119634a22f1d5b19f5c9ea0adccb6d3eebc3bc)) + +### Contributors to this release + +- ![avatar](https://avatars.githubusercontent.com/u/12586868?v=4&s=16) [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS "+938/-442 (#5456 #5455 #5453 #5451 #5449 #5447 #5446 #5443 #5442 #5439 #5420 )") + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.2.2] - 2022-12-29 + +### Fixed +- fix(ci): fix release script inputs [#5392](https://github.com/axios/axios/pull/5392) +- fix(ci): prerelease scipts [#5377](https://github.com/axios/axios/pull/5377) +- fix(ci): release scripts [#5376](https://github.com/axios/axios/pull/5376) +- fix(ci): typescript tests [#5375](https://github.com/axios/axios/pull/5375) +- fix: Brotli decompression [#5353](https://github.com/axios/axios/pull/5353) +- fix: add missing HttpStatusCode [#5345](https://github.com/axios/axios/pull/5345) + +### Chores +- chore(ci): set conventional-changelog header config [#5406](https://github.com/axios/axios/pull/5406) +- chore(ci): fix automatic contributors resolving [#5403](https://github.com/axios/axios/pull/5403) +- chore(ci): improved logging for the contributors list generator [#5398](https://github.com/axios/axios/pull/5398) +- chore(ci): fix release action [#5397](https://github.com/axios/axios/pull/5397) +- chore(ci): fix version bump script by adding bump argument for target version [#5393](https://github.com/axios/axios/pull/5393) +- chore(deps): bump decode-uri-component from 0.2.0 to 0.2.2 [#5342](https://github.com/axios/axios/pull/5342) +- chore(ci): GitHub Actions Release script [#5384](https://github.com/axios/axios/pull/5384) +- chore(ci): release scripts [#5364](https://github.com/axios/axios/pull/5364) + +### Contributors to this release +- ![avatar](https://avatars.githubusercontent.com/u/12586868?v=4&s=16) [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS) +- ![avatar](https://avatars.githubusercontent.com/u/1652293?v=4&s=16) [Winnie](https://github.com/winniehell) + +## [1.2.1] - 2022-12-05 + +### Changed +- feat(exports): export mergeConfig [#5151](https://github.com/axios/axios/pull/5151) + +### Fixed +- fix(CancelledError): include config [#4922](https://github.com/axios/axios/pull/4922) +- fix(general): removing multiple/trailing/leading whitespace [#5022](https://github.com/axios/axios/pull/5022) +- fix(headers): decompression for responses without Content-Length header [#5306](https://github.com/axios/axios/pull/5306) +- fix(webWorker): exception to sending form data in web worker [#5139](https://github.com/axios/axios/pull/5139) + +### Refactors +- refactor(types): AxiosProgressEvent.event type to any [#5308](https://github.com/axios/axios/pull/5308) +- refactor(types): add missing types for static AxiosError.from method [#4956](https://github.com/axios/axios/pull/4956) + +### Chores +- chore(docs): remove README link to non-existent upgrade guide [#5307](https://github.com/axios/axios/pull/5307) +- chore(docs): typo in issue template name [#5159](https://github.com/axios/axios/pull/5159) + +### Contributors to this release + +- [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS) +- [Zachary Lysobey](https://github.com/zachlysobey) +- [Kevin Ennis](https://github.com/kevincennis) +- [Philipp Loose](https://github.com/phloose) +- [secondl1ght](https://github.com/secondl1ght) +- [wenzheng](https://github.com/0x30) +- [Ivan Barsukov](https://github.com/ovarn) +- [Arthur Fiorette](https://github.com/arthurfiorette) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.2.0] - 2022-11-10 + +### Changed + +- changed: refactored module exports [#5162](https://github.com/axios/axios/pull/5162) +- change: re-added support for loading Axios with require('axios').default [#5225](https://github.com/axios/axios/pull/5225) + +### Fixed + +- fix: improve AxiosHeaders class [#5224](https://github.com/axios/axios/pull/5224) +- fix: TypeScript type definitions for commonjs [#5196](https://github.com/axios/axios/pull/5196) +- fix: type definition of use method on AxiosInterceptorManager to match the the README [#5071](https://github.com/axios/axios/pull/5071) +- fix: __dirname is not defined in the sandbox [#5269](https://github.com/axios/axios/pull/5269) +- fix: AxiosError.toJSON method to avoid circular references [#5247](https://github.com/axios/axios/pull/5247) +- fix: Z_BUF_ERROR when content-encoding is set but the response body is empty [#5250](https://github.com/axios/axios/pull/5250) + +### Refactors +- refactor: allowing adapters to be loaded by name [#5277](https://github.com/axios/axios/pull/5277) + +### Chores + +- chore: force CI restart [#5243](https://github.com/axios/axios/pull/5243) +- chore: update ECOSYSTEM.md [#5077](https://github.com/axios/axios/pull/5077) +- chore: update get/index.html [#5116](https://github.com/axios/axios/pull/5116) +- chore: update Sandbox UI/UX [#5205](https://github.com/axios/axios/pull/5205) +- chore:(actions): remove git credentials after checkout [#5235](https://github.com/axios/axios/pull/5235) +- chore(actions): bump actions/dependency-review-action from 2 to 3 [#5266](https://github.com/axios/axios/pull/5266) +- chore(packages): bump loader-utils from 1.4.1 to 1.4.2 [#5295](https://github.com/axios/axios/pull/5295) +- chore(packages): bump engine.io from 6.2.0 to 6.2.1 [#5294](https://github.com/axios/axios/pull/5294) +- chore(packages): bump socket.io-parser from 4.0.4 to 4.0.5 [#5241](https://github.com/axios/axios/pull/5241) +- chore(packages): bump loader-utils from 1.4.0 to 1.4.1 [#5245](https://github.com/axios/axios/pull/5245) +- chore(docs): update Resources links in README [#5119](https://github.com/axios/axios/pull/5119) +- chore(docs): update the link for JSON url [#5265](https://github.com/axios/axios/pull/5265) +- chore(docs): fix broken links [#5218](https://github.com/axios/axios/pull/5218) +- chore(docs): update and rename UPGRADE_GUIDE.md to MIGRATION_GUIDE.md [#5170](https://github.com/axios/axios/pull/5170) +- chore(docs): typo fix line #856 and #920 [#5194](https://github.com/axios/axios/pull/5194) +- chore(docs): typo fix #800 [#5193](https://github.com/axios/axios/pull/5193) +- chore(docs): fix typos [#5184](https://github.com/axios/axios/pull/5184) +- chore(docs): fix punctuation in README.md [#5197](https://github.com/axios/axios/pull/5197) +- chore(docs): update readme in the Handling Errors section - issue reference #5260 [#5261](https://github.com/axios/axios/pull/5261) +- chore: remove \b from filename [#5207](https://github.com/axios/axios/pull/5207) +- chore(docs): update CHANGELOG.md [#5137](https://github.com/axios/axios/pull/5137) +- chore: add sideEffects false to package.json [#5025](https://github.com/axios/axios/pull/5025) + +### Contributors to this release + +- [Maddy Miller](https://github.com/me4502) +- [Amit Saini](https://github.com/amitsainii) +- [ecyrbe](https://github.com/ecyrbe) +- [Ikko Ashimine](https://github.com/eltociear) +- [Geeth Gunnampalli](https://github.com/thetechie7) +- [Shreem Asati](https://github.com/shreem-123) +- [Frieder Bluemle](https://github.com/friederbluemle) +- [윤세영](https://github.com/yunseyeong) +- [Claudio Busatto](https://github.com/cjcbusatto) +- [Remco Haszing](https://github.com/remcohaszing) +- [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS) +- [Csaba Maulis](https://github.com/om4csaba) +- [MoPaMo](https://github.com/MoPaMo) +- [Daniel Fjeldstad](https://github.com/w3bdesign) +- [Adrien Brunet](https://github.com/adrien-may) +- [Frazer Smith](https://github.com/Fdawgs) +- [HaiTao](https://github.com/836334258) +- [AZM](https://github.com/aziyatali) +- [relbns](https://github.com/relbns) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.1.3] - 2022-10-15 + +### Added + +- Added custom params serializer support [#5113](https://github.com/axios/axios/pull/5113) + +### Fixed + +- Fixed top-level export to keep them in-line with static properties [#5109](https://github.com/axios/axios/pull/5109) +- Stopped including null values to query string. [#5108](https://github.com/axios/axios/pull/5108) +- Restored proxy config backwards compatibility with 0.x [#5097](https://github.com/axios/axios/pull/5097) +- Added back AxiosHeaders in AxiosHeaderValue [#5103](https://github.com/axios/axios/pull/5103) +- Pin CDN install instructions to a specific version [#5060](https://github.com/axios/axios/pull/5060) +- Handling of array values fixed for AxiosHeaders [#5085](https://github.com/axios/axios/pull/5085) + +### Chores + +- docs: match badge style, add link to them [#5046](https://github.com/axios/axios/pull/5046) +- chore: fixing comments typo [#5054](https://github.com/axios/axios/pull/5054) +- chore: update issue template [#5061](https://github.com/axios/axios/pull/5061) +- chore: added progress capturing section to the docs; [#5084](https://github.com/axios/axios/pull/5084) + +### Contributors to this release + +- [Jason Saayman](https://github.com/jasonsaayman) +- [scarf](https://github.com/scarf005) +- [Lenz Weber-Tronic](https://github.com/phryneas) +- [Arvindh](https://github.com/itsarvindh) +- [Félix Legrelle](https://github.com/FelixLgr) +- [Patrick Petrovic](https://github.com/ppati000) +- [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS) +- [littledian](https://github.com/littledian) +- [ChronosMasterOfAllTime](https://github.com/ChronosMasterOfAllTime) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.1.2] - 2022-10-07 + +### Fixed + +- Fixed broken exports for UMD builds. + +### Contributors to this release + +- [Jason Saayman](https://github.com/jasonsaayman) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.1.1] - 2022-10-07 + +### Fixed + +- Fixed broken exports for common js. This fix breaks a prior fix, I will fix both issues ASAP but the commonJS use is more impactful. + +### Contributors to this release + +- [Jason Saayman](https://github.com/jasonsaayman) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.1.0] - 2022-10-06 + +### Fixed + +- Fixed missing exports in type definition index.d.ts [#5003](https://github.com/axios/axios/pull/5003) +- Fixed query params composing [#5018](https://github.com/axios/axios/pull/5018) +- Fixed GenericAbortSignal interface by making it more generic [#5021](https://github.com/axios/axios/pull/5021) +- Fixed adding "clear" to AxiosInterceptorManager [#5010](https://github.com/axios/axios/pull/5010) +- Fixed commonjs & umd exports [#5030](https://github.com/axios/axios/pull/5030) +- Fixed inability to access response headers when using axios 1.x with Jest [#5036](https://github.com/axios/axios/pull/5036) + +### Contributors to this release + +- [Trim21](https://github.com/trim21) +- [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS) +- [shingo.sasaki](https://github.com/s-sasaki-0529) +- [Ivan Pepelko](https://github.com/ivanpepelko) +- [Richard Kořínek](https://github.com/risa) + +### PRs +- CVE 2023 45857 ( [#6028](https://api.github.com/repos/axios/axios/pulls/6028) ) +``` + +⚠️ Critical vulnerability fix. See https://security.snyk.io/vuln/SNYK-JS-AXIOS-6032459 +``` + +## [1.0.0] - 2022-10-04 + +### Added + +- Added stack trace to AxiosError [#4624](https://github.com/axios/axios/pull/4624) +- Add AxiosError to AxiosStatic [#4654](https://github.com/axios/axios/pull/4654) +- Replaced Rollup as our build runner [#4596](https://github.com/axios/axios/pull/4596) +- Added generic TS types for the exposed toFormData helper [#4668](https://github.com/axios/axios/pull/4668) +- Added listen callback function [#4096](https://github.com/axios/axios/pull/4096) +- Added instructions for installing using PNPM [#4207](https://github.com/axios/axios/pull/4207) +- Added generic AxiosAbortSignal TS interface to avoid importing AbortController polyfill [#4229](https://github.com/axios/axios/pull/4229) +- Added axios-url-template in ECOSYSTEM.md [#4238](https://github.com/axios/axios/pull/4238) +- Added a clear() function to the request and response interceptors object so a user can ensure that all interceptors have been removed from an axios instance [#4248](https://github.com/axios/axios/pull/4248) +- Added react hook plugin [#4319](https://github.com/axios/axios/pull/4319) +- Adding HTTP status code for transformResponse [#4580](https://github.com/axios/axios/pull/4580) +- Added blob to the list of protocols supported by the browser [#4678](https://github.com/axios/axios/pull/4678) +- Resolving proxy from env on redirect [#4436](https://github.com/axios/axios/pull/4436) +- Added enhanced toFormData implementation with additional options [4704](https://github.com/axios/axios/pull/4704) +- Adding Canceler parameters config and request [#4711](https://github.com/axios/axios/pull/4711) +- Added automatic payload serialization to application/x-www-form-urlencoded [#4714](https://github.com/axios/axios/pull/4714) +- Added the ability for webpack users to overwrite built-ins [#4715](https://github.com/axios/axios/pull/4715) +- Added string[] to AxiosRequestHeaders type [#4322](https://github.com/axios/axios/pull/4322) +- Added the ability for the url-encoded-form serializer to respect the formSerializer config [#4721](https://github.com/axios/axios/pull/4721) +- Added isCancel type assert [#4293](https://github.com/axios/axios/pull/4293) +- Added data URL support for node.js [#4725](https://github.com/axios/axios/pull/4725) +- Adding types for progress event callbacks [#4675](https://github.com/axios/axios/pull/4675) +- URL params serializer [#4734](https://github.com/axios/axios/pull/4734) +- Added axios.formToJSON method [#4735](https://github.com/axios/axios/pull/4735) +- Bower platform add data protocol [#4804](https://github.com/axios/axios/pull/4804) +- Use WHATWG URL API instead of url.parse() [#4852](https://github.com/axios/axios/pull/4852) +- Add ENUM containing Http Status Codes to typings [#4903](https://github.com/axios/axios/pull/4903) +- Improve typing of timeout in index.d.ts [#4934](https://github.com/axios/axios/pull/4934) + +### Changed + +- Updated AxiosError.config to be optional in the type definition [#4665](https://github.com/axios/axios/pull/4665) +- Updated README emphasizing the URLSearchParam built-in interface over other solutions [#4590](https://github.com/axios/axios/pull/4590) +- Include request and config when creating a CanceledError instance [#4659](https://github.com/axios/axios/pull/4659) +- Changed func-names eslint rule to as-needed [#4492](https://github.com/axios/axios/pull/4492) +- Replacing deprecated substr() with slice() as substr() is deprecated [#4468](https://github.com/axios/axios/pull/4468) +- Updating HTTP links in README.md to use HTTPS [#4387](https://github.com/axios/axios/pull/4387) +- Updated to a better trim() polyfill [#4072](https://github.com/axios/axios/pull/4072) +- Updated types to allow specifying partial default headers on instance create [#4185](https://github.com/axios/axios/pull/4185) +- Expanded isAxiosError types [#4344](https://github.com/axios/axios/pull/4344) +- Updated type definition for axios instance methods [#4224](https://github.com/axios/axios/pull/4224) +- Updated eslint config [#4722](https://github.com/axios/axios/pull/4722) +- Updated Docs [#4742](https://github.com/axios/axios/pull/4742) +- Refactored Axios to use ES2017 [#4787](https://github.com/axios/axios/pull/4787) + + +### Deprecated +- There are multiple deprecations, refactors and fixes provided in this release. Please read through the full release notes to see how this may impact your project and use case. + +### Removed + +- Removed incorrect argument for NetworkError constructor [#4656](https://github.com/axios/axios/pull/4656) +- Removed Webpack [#4596](https://github.com/axios/axios/pull/4596) +- Removed function that transform arguments to array [#4544](https://github.com/axios/axios/pull/4544) + +### Fixed + +- Fixed grammar in README [#4649](https://github.com/axios/axios/pull/4649) +- Fixed code error in README [#4599](https://github.com/axios/axios/pull/4599) +- Optimized the code that checks cancellation [#4587](https://github.com/axios/axios/pull/4587) +- Fix url pointing to defaults.js in README [#4532](https://github.com/axios/axios/pull/4532) +- Use type alias instead of interface for AxiosPromise [#4505](https://github.com/axios/axios/pull/4505) +- Fix some word spelling and lint style in code comments [#4500](https://github.com/axios/axios/pull/4500) +- Edited readme with 3 updated browser icons of Chrome, FireFox and Safari [#4414](https://github.com/axios/axios/pull/4414) +- Bump follow-redirects from 1.14.9 to 1.15.0 [#4673](https://github.com/axios/axios/pull/4673) +- Fixing http tests to avoid hanging when assertions fail [#4435](https://github.com/axios/axios/pull/4435) +- Fix TS definition for AxiosRequestTransformer [#4201](https://github.com/axios/axios/pull/4201) +- Fix grammatical issues in README [#4232](https://github.com/axios/axios/pull/4232) +- Fixing instance.defaults.headers type [#4557](https://github.com/axios/axios/pull/4557) +- Fixed race condition on immediate requests cancellation [#4261](https://github.com/axios/axios/pull/4261) +- Fixing Z_BUF_ERROR when no content [#4701](https://github.com/axios/axios/pull/4701) +- Fixing proxy beforeRedirect regression [#4708](https://github.com/axios/axios/pull/4708) +- Fixed AxiosError status code type [#4717](https://github.com/axios/axios/pull/4717) +- Fixed AxiosError stack capturing [#4718](https://github.com/axios/axios/pull/4718) +- Fixing AxiosRequestHeaders typings [#4334](https://github.com/axios/axios/pull/4334) +- Fixed max body length defaults [#4731](https://github.com/axios/axios/pull/4731) +- Fixed toFormData Blob issue on node>v17 [#4728](https://github.com/axios/axios/pull/4728) +- Bump grunt from 1.5.2 to 1.5.3 [#4743](https://github.com/axios/axios/pull/4743) +- Fixing content-type header repeated [#4745](https://github.com/axios/axios/pull/4745) +- Fixed timeout error message for http [4738](https://github.com/axios/axios/pull/4738) +- Request ignores false, 0 and empty string as body values [#4785](https://github.com/axios/axios/pull/4785) +- Added back missing minified builds [#4805](https://github.com/axios/axios/pull/4805) +- Fixed a type error [#4815](https://github.com/axios/axios/pull/4815) +- Fixed a regression bug with unsubscribing from cancel token; [#4819](https://github.com/axios/axios/pull/4819) +- Remove repeated compression algorithm [#4820](https://github.com/axios/axios/pull/4820) +- The error of calling extend to pass parameters [#4857](https://github.com/axios/axios/pull/4857) +- SerializerOptions.indexes allows boolean | null | undefined [#4862](https://github.com/axios/axios/pull/4862) +- Require interceptors to return values [#4874](https://github.com/axios/axios/pull/4874) +- Removed unused imports [#4949](https://github.com/axios/axios/pull/4949) +- Allow null indexes on formSerializer and paramsSerializer [#4960](https://github.com/axios/axios/pull/4960) + +### Chores +- Set permissions for GitHub actions [#4765](https://github.com/axios/axios/pull/4765) +- Included githubactions in the dependabot config [#4770](https://github.com/axios/axios/pull/4770) +- Included dependency review [#4771](https://github.com/axios/axios/pull/4771) +- Update security.md [#4784](https://github.com/axios/axios/pull/4784) +- Remove unnecessary spaces [#4854](https://github.com/axios/axios/pull/4854) +- Simplify the import path of AxiosError [#4875](https://github.com/axios/axios/pull/4875) +- Fix Gitpod dead link [#4941](https://github.com/axios/axios/pull/4941) +- Enable syntax highlighting for a code block [#4970](https://github.com/axios/axios/pull/4970) +- Using Logo Axios in Readme.md [#4993](https://github.com/axios/axios/pull/4993) +- Fix markup for note in README [#4825](https://github.com/axios/axios/pull/4825) +- Fix typo and formatting, add colons [#4853](https://github.com/axios/axios/pull/4853) +- Fix typo in readme [#4942](https://github.com/axios/axios/pull/4942) + +### Security + +- Update SECURITY.md [#4687](https://github.com/axios/axios/pull/4687) + +### Contributors to this release + +- [Bertrand Marron](https://github.com/tusbar) +- [Dmitriy Mozgovoy](https://github.com/DigitalBrainJS) +- [Dan Mooney](https://github.com/danmooney) +- [Michael Li](https://github.com/xiaoyu-tamu) +- [aong](https://github.com/yxwzaxns) +- [Des Preston](https://github.com/despreston) +- [Ted Robertson](https://github.com/tredondo) +- [zhoulixiang](https://github.com/zh-lx) +- [Arthur Fiorette](https://github.com/arthurfiorette) +- [Kumar Shanu](https://github.com/Kr-Shanu) +- [JALAL](https://github.com/JLL32) +- [Jingyi Lin](https://github.com/MageeLin) +- [Philipp Loose](https://github.com/phloose) +- [Alexander Shchukin](https://github.com/sashsvamir) +- [Dave Cardwell](https://github.com/davecardwell) +- [Cat Scarlet](https://github.com/catscarlet) +- [Luca Pizzini](https://github.com/lpizzinidev) +- [Kai](https://github.com/Schweinepriester) +- [Maxime Bargiel](https://github.com/mbargiel) +- [Brian Helba](https://github.com/brianhelba) +- [reslear](https://github.com/reslear) +- [Jamie Slome](https://github.com/JamieSlome) +- [Landro3](https://github.com/Landro3) +- [rafw87](https://github.com/rafw87) +- [Afzal Sayed](https://github.com/afzalsayed96) +- [Koki Oyatsu](https://github.com/kaishuu0123) +- [Dave](https://github.com/wangcch) +- [暴走老七](https://github.com/baozouai) +- [Spencer](https://github.com/spalger) +- [Adrian Wieprzkowicz](https://github.com/Argeento) +- [Jamie Telin](https://github.com/lejahmie) +- [毛呆](https://github.com/aweikalee) +- [Kirill Shakirov](https://github.com/turisap) +- [Rraji Abdelbari](https://github.com/estarossa0) +- [Jelle Schutter](https://github.com/jelleschutter) +- [Tom Ceuppens](https://github.com/KyorCode) +- [Johann Cooper](https://github.com/JohannCooper) +- [Dimitris Halatsis](https://github.com/mitsos1os) +- [chenjigeng](https://github.com/chenjigeng) +- [João Gabriel Quaresma](https://github.com/joaoGabriel55) +- [Victor Augusto](https://github.com/VictorAugDB) +- [neilnaveen](https://github.com/neilnaveen) +- [Pavlos](https://github.com/psmoros) +- [Kiryl Valkovich](https://github.com/visortelle) +- [Naveen](https://github.com/naveensrinivasan) +- [wenzheng](https://github.com/0x30) +- [hcwhan](https://github.com/hcwhan) +- [Bassel Rachid](https://github.com/basselworkforce) +- [Grégoire Pineau](https://github.com/lyrixx) +- [felipedamin](https://github.com/felipedamin) +- [Karl Horky](https://github.com/karlhorky) +- [Yue JIN](https://github.com/kingyue737) +- [Usman Ali Siddiqui](https://github.com/usman250994) +- [WD](https://github.com/techbirds) +- [Günther Foidl](https://github.com/gfoidl) +- [Stephen Jennings](https://github.com/jennings) +- [C.T.Lin](https://github.com/chentsulin) +- [mia-z](https://github.com/mia-z) +- [Parth Banathia](https://github.com/Parth0105) +- [parth0105pluang](https://github.com/parth0105pluang) +- [Marco Weber](https://github.com/mrcwbr) +- [Luca Pizzini](https://github.com/lpizzinidev) +- [Willian Agostini](https://github.com/WillianAgostini) +- [Huyen Nguyen](https://github.com/huyenltnguyen) \ No newline at end of file diff --git a/node_modules/axios/LICENSE b/node_modules/axios/LICENSE new file mode 100644 index 0000000..05006a5 --- /dev/null +++ b/node_modules/axios/LICENSE @@ -0,0 +1,7 @@ +# Copyright (c) 2014-present Matt Zabriskie & Collaborators + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/axios/MIGRATION_GUIDE.md b/node_modules/axios/MIGRATION_GUIDE.md new file mode 100644 index 0000000..ec3ae0d --- /dev/null +++ b/node_modules/axios/MIGRATION_GUIDE.md @@ -0,0 +1,3 @@ +# Migration Guide + +## 0.x.x -> 1.1.0 diff --git a/node_modules/axios/README.md b/node_modules/axios/README.md new file mode 100644 index 0000000..128cb1d --- /dev/null +++ b/node_modules/axios/README.md @@ -0,0 +1,1682 @@ + +

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+ +[![npm version](https://img.shields.io/npm/v/axios.svg?style=flat-square)](https://www.npmjs.org/package/axios) +[![CDNJS](https://img.shields.io/cdnjs/v/axios.svg?style=flat-square)](https://cdnjs.com/libraries/axios) +[![Build status](https://img.shields.io/github/actions/workflow/status/axios/axios/ci.yml?branch=v1.x&label=CI&logo=github&style=flat-square)](https://github.com/axios/axios/actions/workflows/ci.yml) +[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod&style=flat-square)](https://gitpod.io/#https://github.com/axios/axios) +[![code coverage](https://img.shields.io/coveralls/mzabriskie/axios.svg?style=flat-square)](https://coveralls.io/r/mzabriskie/axios) +[![install size](https://img.shields.io/badge/dynamic/json?url=https://packagephobia.com/v2/api.json?p=axios&query=$.install.pretty&label=install%20size&style=flat-square)](https://packagephobia.now.sh/result?p=axios) +[![npm bundle size](https://img.shields.io/bundlephobia/minzip/axios?style=flat-square)](https://bundlephobia.com/package/axios@latest) +[![npm downloads](https://img.shields.io/npm/dm/axios.svg?style=flat-square)](https://npm-stat.com/charts.html?package=axios) +[![gitter chat](https://img.shields.io/gitter/room/mzabriskie/axios.svg?style=flat-square)](https://gitter.im/mzabriskie/axios) +[![code helpers](https://www.codetriage.com/axios/axios/badges/users.svg)](https://www.codetriage.com/axios/axios) +[![Known Vulnerabilities](https://snyk.io/test/npm/axios/badge.svg)](https://snyk.io/test/npm/axios) + + + + +
+ +## Table of Contents + + - [Features](#features) + - [Browser Support](#browser-support) + - [Installing](#installing) + - [Package manager](#package-manager) + - [CDN](#cdn) + - [Example](#example) + - [Axios API](#axios-api) + - [Request method aliases](#request-method-aliases) + - [Concurrency 👎](#concurrency-deprecated) + - [Creating an instance](#creating-an-instance) + - [Instance methods](#instance-methods) + - [Request Config](#request-config) + - [Response Schema](#response-schema) + - [Config Defaults](#config-defaults) + - [Global axios defaults](#global-axios-defaults) + - [Custom instance defaults](#custom-instance-defaults) + - [Config order of precedence](#config-order-of-precedence) + - [Interceptors](#interceptors) + - [Multiple Interceptors](#multiple-interceptors) + - [Handling Errors](#handling-errors) + - [Cancellation](#cancellation) + - [AbortController](#abortcontroller) + - [CancelToken 👎](#canceltoken-deprecated) + - [Using application/x-www-form-urlencoded format](#using-applicationx-www-form-urlencoded-format) + - [URLSearchParams](#urlsearchparams) + - [Query string](#query-string-older-browsers) + - [🆕 Automatic serialization](#-automatic-serialization-to-urlsearchparams) + - [Using multipart/form-data format](#using-multipartform-data-format) + - [FormData](#formdata) + - [🆕 Automatic serialization](#-automatic-serialization-to-formdata) + - [Files Posting](#files-posting) + - [HTML Form Posting](#-html-form-posting-browser) + - [🆕 Progress capturing](#-progress-capturing) + - [🆕 Rate limiting](#-progress-capturing) + - [🆕 AxiosHeaders](#-axiosheaders) + - [🔥 Fetch adapter](#-fetch-adapter) + - [Semver](#semver) + - [Promises](#promises) + - [TypeScript](#typescript) + - [Resources](#resources) + - [Credits](#credits) + - [License](#license) + +## Features + +- Make [XMLHttpRequests](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) from the browser +- Make [http](https://nodejs.org/api/http.html) requests from node.js +- Supports the [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) API +- Intercept request and response +- Transform request and response data +- Cancel requests +- Automatic transforms for [JSON](https://www.json.org/json-en.html) data +- 🆕 Automatic data object serialization to `multipart/form-data` and `x-www-form-urlencoded` body encodings +- Client side support for protecting against [XSRF](https://en.wikipedia.org/wiki/Cross-site_request_forgery) + +## Browser Support + +![Chrome](https://raw.githubusercontent.com/alrra/browser-logos/main/src/chrome/chrome_48x48.png) | ![Firefox](https://raw.githubusercontent.com/alrra/browser-logos/main/src/firefox/firefox_48x48.png) | ![Safari](https://raw.githubusercontent.com/alrra/browser-logos/main/src/safari/safari_48x48.png) | ![Opera](https://raw.githubusercontent.com/alrra/browser-logos/main/src/opera/opera_48x48.png) | ![Edge](https://raw.githubusercontent.com/alrra/browser-logos/main/src/edge/edge_48x48.png) | +--- | --- | --- | --- | --- | +Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ | + +[![Browser Matrix](https://saucelabs.com/open_sauce/build_matrix/axios.svg)](https://saucelabs.com/u/axios) + +## Installing + +### Package manager + +Using npm: + +```bash +$ npm install axios +``` + +Using bower: + +```bash +$ bower install axios +``` + +Using yarn: + +```bash +$ yarn add axios +``` + +Using pnpm: + +```bash +$ pnpm add axios +``` + +Using bun: + +```bash +$ bun add axios +``` + +Once the package is installed, you can import the library using `import` or `require` approach: + +```js +import axios, {isCancel, AxiosError} from 'axios'; +``` + +You can also use the default export, since the named export is just a re-export from the Axios factory: + +```js +import axios from 'axios'; + +console.log(axios.isCancel('something')); +```` + +If you use `require` for importing, **only default export is available**: + +```js +const axios = require('axios'); + +console.log(axios.isCancel('something')); +``` + +For some bundlers and some ES6 linters you may need to do the following: + +```js +import { default as axios } from 'axios'; +``` + +For cases where something went wrong when trying to import a module into a custom or legacy environment, +you can try importing the module package directly: + +```js +const axios = require('axios/dist/browser/axios.cjs'); // browser commonJS bundle (ES2017) +// const axios = require('axios/dist/node/axios.cjs'); // node commonJS bundle (ES2017) +``` + +### CDN + +Using jsDelivr CDN (ES5 UMD browser module): + +```html + +``` + +Using unpkg CDN: + +```html + +``` + +## Example + +> **Note**: CommonJS usage +> In order to gain the TypeScript typings (for intellisense / autocomplete) while using CommonJS imports with `require()`, use the following approach: + +```js +import axios from 'axios'; +//const axios = require('axios'); // legacy way + +// Make a request for a user with a given ID +axios.get('/user?ID=12345') + .then(function (response) { + // handle success + console.log(response); + }) + .catch(function (error) { + // handle error + console.log(error); + }) + .finally(function () { + // always executed + }); + +// Optionally the request above could also be done as +axios.get('/user', { + params: { + ID: 12345 + } + }) + .then(function (response) { + console.log(response); + }) + .catch(function (error) { + console.log(error); + }) + .finally(function () { + // always executed + }); + +// Want to use async/await? Add the `async` keyword to your outer function/method. +async function getUser() { + try { + const response = await axios.get('/user?ID=12345'); + console.log(response); + } catch (error) { + console.error(error); + } +} +``` + +> **Note**: `async/await` is part of ECMAScript 2017 and is not supported in Internet +> Explorer and older browsers, so use with caution. + +Performing a `POST` request + +```js +axios.post('/user', { + firstName: 'Fred', + lastName: 'Flintstone' + }) + .then(function (response) { + console.log(response); + }) + .catch(function (error) { + console.log(error); + }); +``` + +Performing multiple concurrent requests + +```js +function getUserAccount() { + return axios.get('/user/12345'); +} + +function getUserPermissions() { + return axios.get('/user/12345/permissions'); +} + +Promise.all([getUserAccount(), getUserPermissions()]) + .then(function (results) { + const acct = results[0]; + const perm = results[1]; + }); +``` + +## axios API + +Requests can be made by passing the relevant config to `axios`. + +##### axios(config) + +```js +// Send a POST request +axios({ + method: 'post', + url: '/user/12345', + data: { + firstName: 'Fred', + lastName: 'Flintstone' + } +}); +``` + +```js +// GET request for remote image in node.js +axios({ + method: 'get', + url: 'https://bit.ly/2mTM3nY', + responseType: 'stream' +}) + .then(function (response) { + response.data.pipe(fs.createWriteStream('ada_lovelace.jpg')) + }); +``` + +##### axios(url[, config]) + +```js +// Send a GET request (default method) +axios('/user/12345'); +``` + +### Request method aliases + +For convenience, aliases have been provided for all common request methods. + +##### axios.request(config) +##### axios.get(url[, config]) +##### axios.delete(url[, config]) +##### axios.head(url[, config]) +##### axios.options(url[, config]) +##### axios.post(url[, data[, config]]) +##### axios.put(url[, data[, config]]) +##### axios.patch(url[, data[, config]]) + +###### NOTE +When using the alias methods `url`, `method`, and `data` properties don't need to be specified in config. + +### Concurrency (Deprecated) +Please use `Promise.all` to replace the below functions. + +Helper functions for dealing with concurrent requests. + +axios.all(iterable) +axios.spread(callback) + +### Creating an instance + +You can create a new instance of axios with a custom config. + +##### axios.create([config]) + +```js +const instance = axios.create({ + baseURL: 'https://some-domain.com/api/', + timeout: 1000, + headers: {'X-Custom-Header': 'foobar'} +}); +``` + +### Instance methods + +The available instance methods are listed below. The specified config will be merged with the instance config. + +##### axios#request(config) +##### axios#get(url[, config]) +##### axios#delete(url[, config]) +##### axios#head(url[, config]) +##### axios#options(url[, config]) +##### axios#post(url[, data[, config]]) +##### axios#put(url[, data[, config]]) +##### axios#patch(url[, data[, config]]) +##### axios#getUri([config]) + +## Request Config + +These are the available config options for making requests. Only the `url` is required. Requests will default to `GET` if `method` is not specified. + +```js +{ + // `url` is the server URL that will be used for the request + url: '/user', + + // `method` is the request method to be used when making the request + method: 'get', // default + + // `baseURL` will be prepended to `url` unless `url` is absolute and option `allowAbsoluteUrls` is set to true. + // It can be convenient to set `baseURL` for an instance of axios to pass relative URLs + // to methods of that instance. + baseURL: 'https://some-domain.com/api/', + + // `allowAbsoluteUrls` determines whether or not absolute URLs will override a configured `baseUrl`. + // When set to true (default), absolute values for `url` will override `baseUrl`. + // When set to false, absolute values for `url` will always be prepended by `baseUrl`. + allowAbsoluteUrls: true, + + // `transformRequest` allows changes to the request data before it is sent to the server + // This is only applicable for request methods 'PUT', 'POST', 'PATCH' and 'DELETE' + // The last function in the array must return a string or an instance of Buffer, ArrayBuffer, + // FormData or Stream + // You may modify the headers object. + transformRequest: [function (data, headers) { + // Do whatever you want to transform the data + + return data; + }], + + // `transformResponse` allows changes to the response data to be made before + // it is passed to then/catch + transformResponse: [function (data) { + // Do whatever you want to transform the data + + return data; + }], + + // `headers` are custom headers to be sent + headers: {'X-Requested-With': 'XMLHttpRequest'}, + + // `params` are the URL parameters to be sent with the request + // Must be a plain object or a URLSearchParams object + params: { + ID: 12345 + }, + + // `paramsSerializer` is an optional config that allows you to customize serializing `params`. + paramsSerializer: { + + // Custom encoder function which sends key/value pairs in an iterative fashion. + encode?: (param: string): string => { /* Do custom operations here and return transformed string */ }, + + // Custom serializer function for the entire parameter. Allows user to mimic pre 1.x behaviour. + serialize?: (params: Record, options?: ParamsSerializerOptions ), + + // Configuration for formatting array indexes in the params. + indexes: false // Three available options: (1) indexes: null (leads to no brackets), (2) (default) indexes: false (leads to empty brackets), (3) indexes: true (leads to brackets with indexes). + }, + + // `data` is the data to be sent as the request body + // Only applicable for request methods 'PUT', 'POST', 'DELETE , and 'PATCH' + // When no `transformRequest` is set, must be of one of the following types: + // - string, plain object, ArrayBuffer, ArrayBufferView, URLSearchParams + // - Browser only: FormData, File, Blob + // - Node only: Stream, Buffer, FormData (form-data package) + data: { + firstName: 'Fred' + }, + + // syntax alternative to send data into the body + // method post + // only the value is sent, not the key + data: 'Country=Brasil&City=Belo Horizonte', + + // `timeout` specifies the number of milliseconds before the request times out. + // If the request takes longer than `timeout`, the request will be aborted. + timeout: 1000, // default is `0` (no timeout) + + // `withCredentials` indicates whether or not cross-site Access-Control requests + // should be made using credentials + withCredentials: false, // default + + // `adapter` allows custom handling of requests which makes testing easier. + // Return a promise and supply a valid response (see lib/adapters/README.md) + adapter: function (config) { + /* ... */ + }, + // Also, you can set the name of the built-in adapter, or provide an array with their names + // to choose the first available in the environment + adapter: 'xhr', // 'fetch' | 'http' | ['xhr', 'http', 'fetch'] + + // `auth` indicates that HTTP Basic auth should be used, and supplies credentials. + // This will set an `Authorization` header, overwriting any existing + // `Authorization` custom headers you have set using `headers`. + // Please note that only HTTP Basic auth is configurable through this parameter. + // For Bearer tokens and such, use `Authorization` custom headers instead. + auth: { + username: 'janedoe', + password: 's00pers3cret' + }, + + // `responseType` indicates the type of data that the server will respond with + // options are: 'arraybuffer', 'document', 'json', 'text', 'stream' + // browser only: 'blob' + responseType: 'json', // default + + // `responseEncoding` indicates encoding to use for decoding responses (Node.js only) + // Note: Ignored for `responseType` of 'stream' or client-side requests + // options are: 'ascii', 'ASCII', 'ansi', 'ANSI', 'binary', 'BINARY', 'base64', 'BASE64', 'base64url', + // 'BASE64URL', 'hex', 'HEX', 'latin1', 'LATIN1', 'ucs-2', 'UCS-2', 'ucs2', 'UCS2', 'utf-8', 'UTF-8', + // 'utf8', 'UTF8', 'utf16le', 'UTF16LE' + responseEncoding: 'utf8', // default + + // `xsrfCookieName` is the name of the cookie to use as a value for xsrf token + xsrfCookieName: 'XSRF-TOKEN', // default + + // `xsrfHeaderName` is the name of the http header that carries the xsrf token value + xsrfHeaderName: 'X-XSRF-TOKEN', // default + + // `undefined` (default) - set XSRF header only for the same origin requests + withXSRFToken: boolean | undefined | ((config: InternalAxiosRequestConfig) => boolean | undefined), + + // `onUploadProgress` allows handling of progress events for uploads + // browser & node.js + onUploadProgress: function ({loaded, total, progress, bytes, estimated, rate, upload = true}) { + // Do whatever you want with the Axios progress event + }, + + // `onDownloadProgress` allows handling of progress events for downloads + // browser & node.js + onDownloadProgress: function ({loaded, total, progress, bytes, estimated, rate, download = true}) { + // Do whatever you want with the Axios progress event + }, + + // `maxContentLength` defines the max size of the http response content in bytes allowed in node.js + maxContentLength: 2000, + + // `maxBodyLength` (Node only option) defines the max size of the http request content in bytes allowed + maxBodyLength: 2000, + + // `validateStatus` defines whether to resolve or reject the promise for a given + // HTTP response status code. If `validateStatus` returns `true` (or is set to `null` + // or `undefined`), the promise will be resolved; otherwise, the promise will be + // rejected. + validateStatus: function (status) { + return status >= 200 && status < 300; // default + }, + + // `maxRedirects` defines the maximum number of redirects to follow in node.js. + // If set to 0, no redirects will be followed. + maxRedirects: 21, // default + + // `beforeRedirect` defines a function that will be called before redirect. + // Use this to adjust the request options upon redirecting, + // to inspect the latest response headers, + // or to cancel the request by throwing an error + // If maxRedirects is set to 0, `beforeRedirect` is not used. + beforeRedirect: (options, { headers }) => { + if (options.hostname === "example.com") { + options.auth = "user:password"; + } + }, + + // `socketPath` defines a UNIX Socket to be used in node.js. + // e.g. '/var/run/docker.sock' to send requests to the docker daemon. + // Only either `socketPath` or `proxy` can be specified. + // If both are specified, `socketPath` is used. + socketPath: null, // default + + // `transport` determines the transport method that will be used to make the request. + // If defined, it will be used. Otherwise, if `maxRedirects` is 0, + // the default `http` or `https` library will be used, depending on the protocol specified in `protocol`. + // Otherwise, the `httpFollow` or `httpsFollow` library will be used, again depending on the protocol, + // which can handle redirects. + transport: undefined, // default + + // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http + // and https requests, respectively, in node.js. This allows options to be added like + // `keepAlive` that are not enabled by default before Node.js v19.0.0. After Node.js + // v19.0.0, you no longer need to customize the agent to enable `keepAlive` because + // `http.globalAgent` has `keepAlive` enabled by default. + httpAgent: new http.Agent({ keepAlive: true }), + httpsAgent: new https.Agent({ keepAlive: true }), + + // `proxy` defines the hostname, port, and protocol of the proxy server. + // You can also define your proxy using the conventional `http_proxy` and + // `https_proxy` environment variables. If you are using environment variables + // for your proxy configuration, you can also define a `no_proxy` environment + // variable as a comma-separated list of domains that should not be proxied. + // Use `false` to disable proxies, ignoring environment variables. + // `auth` indicates that HTTP Basic auth should be used to connect to the proxy, and + // supplies credentials. + // This will set an `Proxy-Authorization` header, overwriting any existing + // `Proxy-Authorization` custom headers you have set using `headers`. + // If the proxy server uses HTTPS, then you must set the protocol to `https`. + proxy: { + protocol: 'https', + host: '127.0.0.1', + // hostname: '127.0.0.1' // Takes precedence over 'host' if both are defined + port: 9000, + auth: { + username: 'mikeymike', + password: 'rapunz3l' + } + }, + + // `cancelToken` specifies a cancel token that can be used to cancel the request + // (see Cancellation section below for details) + cancelToken: new CancelToken(function (cancel) { + }), + + // an alternative way to cancel Axios requests using AbortController + signal: new AbortController().signal, + + // `decompress` indicates whether or not the response body should be decompressed + // automatically. If set to `true` will also remove the 'content-encoding' header + // from the responses objects of all decompressed responses + // - Node only (XHR cannot turn off decompression) + decompress: true, // default + + // `insecureHTTPParser` boolean. + // Indicates where to use an insecure HTTP parser that accepts invalid HTTP headers. + // This may allow interoperability with non-conformant HTTP implementations. + // Using the insecure parser should be avoided. + // see options https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_http_request_url_options_callback + // see also https://nodejs.org/en/blog/vulnerability/february-2020-security-releases/#strict-http-header-parsing-none + insecureHTTPParser: undefined, // default + + // transitional options for backward compatibility that may be removed in the newer versions + transitional: { + // silent JSON parsing mode + // `true` - ignore JSON parsing errors and set response.data to null if parsing failed (old behaviour) + // `false` - throw SyntaxError if JSON parsing failed (Note: responseType must be set to 'json') + silentJSONParsing: true, // default value for the current Axios version + + // try to parse the response string as JSON even if `responseType` is not 'json' + forcedJSONParsing: true, + + // throw ETIMEDOUT error instead of generic ECONNABORTED on request timeouts + clarifyTimeoutError: false, + }, + + env: { + // The FormData class to be used to automatically serialize the payload into a FormData object + FormData: window?.FormData || global?.FormData + }, + + formSerializer: { + visitor: (value, key, path, helpers) => {}; // custom visitor function to serialize form values + dots: boolean; // use dots instead of brackets format + metaTokens: boolean; // keep special endings like {} in parameter key + indexes: boolean; // array indexes format null - no brackets, false - empty brackets, true - brackets with indexes + }, + + // http adapter only (node.js) + maxRate: [ + 100 * 1024, // 100KB/s upload limit, + 100 * 1024 // 100KB/s download limit + ] +} +``` + +## Response Schema + +The response for a request contains the following information. + +```js +{ + // `data` is the response that was provided by the server + data: {}, + + // `status` is the HTTP status code from the server response + status: 200, + + // `statusText` is the HTTP status message from the server response + statusText: 'OK', + + // `headers` the HTTP headers that the server responded with + // All header names are lowercase and can be accessed using the bracket notation. + // Example: `response.headers['content-type']` + headers: {}, + + // `config` is the config that was provided to `axios` for the request + config: {}, + + // `request` is the request that generated this response + // It is the last ClientRequest instance in node.js (in redirects) + // and an XMLHttpRequest instance in the browser + request: {} +} +``` + +When using `then`, you will receive the response as follows: + +```js +axios.get('/user/12345') + .then(function (response) { + console.log(response.data); + console.log(response.status); + console.log(response.statusText); + console.log(response.headers); + console.log(response.config); + }); +``` + +When using `catch`, or passing a [rejection callback](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then) as second parameter of `then`, the response will be available through the `error` object as explained in the [Handling Errors](#handling-errors) section. + +## Config Defaults + +You can specify config defaults that will be applied to every request. + +### Global axios defaults + +```js +axios.defaults.baseURL = 'https://api.example.com'; + +// Important: If axios is used with multiple domains, the AUTH_TOKEN will be sent to all of them. +// See below for an example using Custom instance defaults instead. +axios.defaults.headers.common['Authorization'] = AUTH_TOKEN; + +axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'; +``` + +### Custom instance defaults + +```js +// Set config defaults when creating the instance +const instance = axios.create({ + baseURL: 'https://api.example.com' +}); + +// Alter defaults after instance has been created +instance.defaults.headers.common['Authorization'] = AUTH_TOKEN; +``` + +### Config order of precedence + +Config will be merged with an order of precedence. The order is library defaults found in [lib/defaults/index.js](https://github.com/axios/axios/blob/main/lib/defaults/index.js#L49), then `defaults` property of the instance, and finally `config` argument for the request. The latter will take precedence over the former. Here's an example. + +```js +// Create an instance using the config defaults provided by the library +// At this point the timeout config value is `0` as is the default for the library +const instance = axios.create(); + +// Override timeout default for the library +// Now all requests using this instance will wait 2.5 seconds before timing out +instance.defaults.timeout = 2500; + +// Override timeout for this request as it's known to take a long time +instance.get('/longRequest', { + timeout: 5000 +}); +``` + +## Interceptors + +You can intercept requests or responses before they are handled by `then` or `catch`. + +```js + +const instance = axios.create(); + +// Add a request interceptor +instance.interceptors.request.use(function (config) { + // Do something before request is sent + return config; + }, function (error) { + // Do something with request error + return Promise.reject(error); + }); + +// Add a response interceptor +instance.interceptors.response.use(function (response) { + // Any status code that lie within the range of 2xx cause this function to trigger + // Do something with response data + return response; + }, function (error) { + // Any status codes that falls outside the range of 2xx cause this function to trigger + // Do something with response error + return Promise.reject(error); + }); +``` + +If you need to remove an interceptor later you can. + +```js +const instance = axios.create(); +const myInterceptor = instance.interceptors.request.use(function () {/*...*/}); +axios.interceptors.request.eject(myInterceptor); +``` + +You can also clear all interceptors for requests or responses. +```js +const instance = axios.create(); +instance.interceptors.request.use(function () {/*...*/}); +instance.interceptors.request.clear(); // Removes interceptors from requests +instance.interceptors.response.use(function () {/*...*/}); +instance.interceptors.response.clear(); // Removes interceptors from responses +``` + +You can add interceptors to a custom instance of axios. + +```js +const instance = axios.create(); +instance.interceptors.request.use(function () {/*...*/}); +``` + +When you add request interceptors, they are presumed to be asynchronous by default. This can cause a delay +in the execution of your axios request when the main thread is blocked (a promise is created under the hood for +the interceptor and your request gets put on the bottom of the call stack). If your request interceptors are synchronous you can add a flag +to the options object that will tell axios to run the code synchronously and avoid any delays in request execution. + +```js +axios.interceptors.request.use(function (config) { + config.headers.test = 'I am only a header!'; + return config; +}, null, { synchronous: true }); +``` + +If you want to execute a particular interceptor based on a runtime check, +you can add a `runWhen` function to the options object. The request interceptor will not be executed **if and only if** the return +of `runWhen` is `false`. The function will be called with the config +object (don't forget that you can bind your own arguments to it as well.) This can be handy when you have an +asynchronous request interceptor that only needs to run at certain times. + +```js +function onGetCall(config) { + return config.method === 'get'; +} +axios.interceptors.request.use(function (config) { + config.headers.test = 'special get headers'; + return config; +}, null, { runWhen: onGetCall }); +``` + +> **Note:** options parameter(having `synchronous` and `runWhen` properties) is only supported for request interceptors at the moment. + +### Multiple Interceptors + +Given you add multiple response interceptors +and when the response was fulfilled +- then each interceptor is executed +- then they are executed in the order they were added +- then only the last interceptor's result is returned +- then every interceptor receives the result of its predecessor +- and when the fulfillment-interceptor throws + - then the following fulfillment-interceptor is not called + - then the following rejection-interceptor is called + - once caught, another following fulfill-interceptor is called again (just like in a promise chain). + +Read [the interceptor tests](./test/specs/interceptors.spec.js) for seeing all this in code. + +## Error Types + +There are many different axios error messages that can appear that can provide basic information about the specifics of the error and where opportunities may lie in debugging. + +The general structure of axios errors is as follows: +| Property | Definition | +| -------- | ---------- | +| message | A quick summary of the error message and the status it failed with. | +| name | This defines where the error originated from. For axios, it will always be an 'AxiosError'. | +| stack | Provides the stack trace of the error. | +| config | An axios config object with specific instance configurations defined by the user from when the request was made | +| code | Represents an axios identified error. The table below lists out specific definitions for internal axios error. | +| status | HTTP response status code. See [here](https://en.wikipedia.org/wiki/List_of_HTTP_status_codes) for common HTTP response status code meanings. + +Below is a list of potential axios identified error: + +| Code | Definition | +| --- | --- | +| ERR_BAD_OPTION_VALUE | Invalid value provided in axios configuration. | +| ERR_BAD_OPTION | Invalid option provided in axios configuration. | +| ERR_NOT_SUPPORT | Feature or method not supported in the current axios environment. | +| ERR_DEPRECATED | Deprecated feature or method used in axios. | +| ERR_INVALID_URL | Invalid URL provided for axios request. | +| ECONNABORTED | Typically indicates that the request has been timed out (unless `transitional.clarifyTimeoutError` is set) or aborted by the browser or its plugin. | +| ERR_CANCELED | Feature or method is canceled explicitly by the user using an AbortSignal (or a CancelToken). | +| ETIMEDOUT | Request timed out due to exceeding default axios timelimit. `transitional.clarifyTimeoutError` must be set to `true`, otherwise a generic `ECONNABORTED` error will be thrown instead. | +| ERR_NETWORK | Network-related issue. In the browser, this error can also be caused by a [CORS](https://developer.mozilla.org/ru/docs/Web/HTTP/Guides/CORS) or [Mixed Content](https://developer.mozilla.org/en-US/docs/Web/Security/Mixed_content) policy violation. The browser does not allow the JS code to clarify the real reason for the error caused by security issues, so please check the console. | +| ERR_FR_TOO_MANY_REDIRECTS | Request is redirected too many times; exceeds max redirects specified in axios configuration. | +| ERR_BAD_RESPONSE | Response cannot be parsed properly or is in an unexpected format. Usually related to a response with `5xx` status code. | +| ERR_BAD_REQUEST | The request has an unexpected format or is missing required parameters. Usually related to a response with `4xx` status code. | + +## Handling Errors + +the default behavior is to reject every response that returns with a status code that falls out of the range of 2xx and treat it as an error. + +```js +axios.get('/user/12345') + .catch(function (error) { + if (error.response) { + // The request was made and the server responded with a status code + // that falls out of the range of 2xx + console.log(error.response.data); + console.log(error.response.status); + console.log(error.response.headers); + } else if (error.request) { + // The request was made but no response was received + // `error.request` is an instance of XMLHttpRequest in the browser and an instance of + // http.ClientRequest in node.js + console.log(error.request); + } else { + // Something happened in setting up the request that triggered an Error + console.log('Error', error.message); + } + console.log(error.config); + }); +``` + +Using the `validateStatus` config option, you can override the default condition (status >= 200 && status < 300) and define HTTP code(s) that should throw an error. + +```js +axios.get('/user/12345', { + validateStatus: function (status) { + return status < 500; // Resolve only if the status code is less than 500 + } +}) +``` + +Using `toJSON` you get an object with more information about the HTTP error. + +```js +axios.get('/user/12345') + .catch(function (error) { + console.log(error.toJSON()); + }); +``` + +## Cancellation + +### AbortController + +Starting from `v0.22.0` Axios supports AbortController to cancel requests in fetch API way: + +```js +const controller = new AbortController(); + +axios.get('/foo/bar', { + signal: controller.signal +}).then(function(response) { + //... +}); +// cancel the request +controller.abort() +``` + +### CancelToken `👎deprecated` + +You can also cancel a request using a *CancelToken*. + +> The axios cancel token API is based on the withdrawn [cancellable promises proposal](https://github.com/tc39/proposal-cancelable-promises). + +> This API is deprecated since v0.22.0 and shouldn't be used in new projects + +You can create a cancel token using the `CancelToken.source` factory as shown below: + +```js +const CancelToken = axios.CancelToken; +const source = CancelToken.source(); + +axios.get('/user/12345', { + cancelToken: source.token +}).catch(function (thrown) { + if (axios.isCancel(thrown)) { + console.log('Request canceled', thrown.message); + } else { + // handle error + } +}); + +axios.post('/user/12345', { + name: 'new name' +}, { + cancelToken: source.token +}) + +// cancel the request (the message parameter is optional) +source.cancel('Operation canceled by the user.'); +``` + +You can also create a cancel token by passing an executor function to the `CancelToken` constructor: + +```js +const CancelToken = axios.CancelToken; +let cancel; + +axios.get('/user/12345', { + cancelToken: new CancelToken(function executor(c) { + // An executor function receives a cancel function as a parameter + cancel = c; + }) +}); + +// cancel the request +cancel(); +``` + +> **Note:** you can cancel several requests with the same cancel token/abort controller. +> If a cancellation token is already cancelled at the moment of starting an Axios request, then the request is cancelled immediately, without any attempts to make a real request. + +> During the transition period, you can use both cancellation APIs, even for the same request: + +## Using `application/x-www-form-urlencoded` format + +### URLSearchParams + +By default, axios serializes JavaScript objects to `JSON`. To send data in the [`application/x-www-form-urlencoded` format](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST) instead, you can use the [`URLSearchParams`](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams) API, which is [supported](http://www.caniuse.com/#feat=urlsearchparams) in the vast majority of browsers,and [ Node](https://nodejs.org/api/url.html#url_class_urlsearchparams) starting with v10 (released in 2018). + +```js +const params = new URLSearchParams({ foo: 'bar' }); +params.append('extraparam', 'value'); +axios.post('/foo', params); +``` + +### Query string (Older browsers) + +For compatibility with very old browsers, there is a [polyfill](https://github.com/WebReflection/url-search-params) available (make sure to polyfill the global environment). + +Alternatively, you can encode data using the [`qs`](https://github.com/ljharb/qs) library: + +```js +const qs = require('qs'); +axios.post('/foo', qs.stringify({ 'bar': 123 })); +``` + +Or in another way (ES6), + +```js +import qs from 'qs'; +const data = { 'bar': 123 }; +const options = { + method: 'POST', + headers: { 'content-type': 'application/x-www-form-urlencoded' }, + data: qs.stringify(data), + url, +}; +axios(options); +``` + +### Older Node.js versions + +For older Node.js engines, you can use the [`querystring`](https://nodejs.org/api/querystring.html) module as follows: + +```js +const querystring = require('querystring'); +axios.post('https://something.com/', querystring.stringify({ foo: 'bar' })); +``` + +You can also use the [`qs`](https://github.com/ljharb/qs) library. + +> **Note**: The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has [known issues](https://github.com/nodejs/node-v0.x-archive/issues/1665) with that use case. + +### 🆕 Automatic serialization to URLSearchParams + +Axios will automatically serialize the data object to urlencoded format if the content-type header is set to "application/x-www-form-urlencoded". + +```js +const data = { + x: 1, + arr: [1, 2, 3], + arr2: [1, [2], 3], + users: [{name: 'Peter', surname: 'Griffin'}, {name: 'Thomas', surname: 'Anderson'}], +}; + +await axios.postForm('https://postman-echo.com/post', data, + {headers: {'content-type': 'application/x-www-form-urlencoded'}} +); +``` + +The server will handle it as: + +```js + { + x: '1', + 'arr[]': [ '1', '2', '3' ], + 'arr2[0]': '1', + 'arr2[1][0]': '2', + 'arr2[2]': '3', + 'arr3[]': [ '1', '2', '3' ], + 'users[0][name]': 'Peter', + 'users[0][surname]': 'griffin', + 'users[1][name]': 'Thomas', + 'users[1][surname]': 'Anderson' + } +```` + +If your backend body-parser (like `body-parser` of `express.js`) supports nested objects decoding, you will get the same object on the server-side automatically + +```js + var app = express(); + + app.use(bodyParser.urlencoded({ extended: true })); // support encoded bodies + + app.post('/', function (req, res, next) { + // echo body as JSON + res.send(JSON.stringify(req.body)); + }); + + server = app.listen(3000); +``` + +## Using `multipart/form-data` format + +### FormData + +To send the data as a `multipart/formdata` you need to pass a formData instance as a payload. +Setting the `Content-Type` header is not required as Axios guesses it based on the payload type. + +```js +const formData = new FormData(); +formData.append('foo', 'bar'); + +axios.post('https://httpbin.org/post', formData); +``` + +In node.js, you can use the [`form-data`](https://github.com/form-data/form-data) library as follows: + +```js +const FormData = require('form-data'); + +const form = new FormData(); +form.append('my_field', 'my value'); +form.append('my_buffer', new Buffer(10)); +form.append('my_file', fs.createReadStream('/foo/bar.jpg')); + +axios.post('https://example.com', form) +``` + +### 🆕 Automatic serialization to FormData + +Starting from `v0.27.0`, Axios supports automatic object serialization to a FormData object if the request `Content-Type` +header is set to `multipart/form-data`. + +The following request will submit the data in a FormData format (Browser & Node.js): + +```js +import axios from 'axios'; + +axios.post('https://httpbin.org/post', {x: 1}, { + headers: { + 'Content-Type': 'multipart/form-data' + } +}).then(({data}) => console.log(data)); +``` + +In the `node.js` build, the ([`form-data`](https://github.com/form-data/form-data)) polyfill is used by default. + +You can overload the FormData class by setting the `env.FormData` config variable, +but you probably won't need it in most cases: + +```js +const axios = require('axios'); +var FormData = require('form-data'); + +axios.post('https://httpbin.org/post', {x: 1, buf: new Buffer(10)}, { + headers: { + 'Content-Type': 'multipart/form-data' + } +}).then(({data}) => console.log(data)); +``` + +Axios FormData serializer supports some special endings to perform the following operations: + +- `{}` - serialize the value with JSON.stringify +- `[]` - unwrap the array-like object as separate fields with the same key + +> **Note**: unwrap/expand operation will be used by default on arrays and FileList objects + +FormData serializer supports additional options via `config.formSerializer: object` property to handle rare cases: + +- `visitor: Function` - user-defined visitor function that will be called recursively to serialize the data object +to a `FormData` object by following custom rules. + +- `dots: boolean = false` - use dot notation instead of brackets to serialize arrays and objects; + +- `metaTokens: boolean = true` - add the special ending (e.g `user{}: '{"name": "John"}'`) in the FormData key. +The back-end body-parser could potentially use this meta-information to automatically parse the value as JSON. + +- `indexes: null|false|true = false` - controls how indexes will be added to unwrapped keys of `flat` array-like objects. + + - `null` - don't add brackets (`arr: 1`, `arr: 2`, `arr: 3`) + - `false`(default) - add empty brackets (`arr[]: 1`, `arr[]: 2`, `arr[]: 3`) + - `true` - add brackets with indexes (`arr[0]: 1`, `arr[1]: 2`, `arr[2]: 3`) + +Let's say we have an object like this one: + +```js +const obj = { + x: 1, + arr: [1, 2, 3], + arr2: [1, [2], 3], + users: [{name: 'Peter', surname: 'Griffin'}, {name: 'Thomas', surname: 'Anderson'}], + 'obj2{}': [{x:1}] +}; +``` + +The following steps will be executed by the Axios serializer internally: + +```js +const formData = new FormData(); +formData.append('x', '1'); +formData.append('arr[]', '1'); +formData.append('arr[]', '2'); +formData.append('arr[]', '3'); +formData.append('arr2[0]', '1'); +formData.append('arr2[1][0]', '2'); +formData.append('arr2[2]', '3'); +formData.append('users[0][name]', 'Peter'); +formData.append('users[0][surname]', 'Griffin'); +formData.append('users[1][name]', 'Thomas'); +formData.append('users[1][surname]', 'Anderson'); +formData.append('obj2{}', '[{"x":1}]'); +``` + +Axios supports the following shortcut methods: `postForm`, `putForm`, `patchForm` +which are just the corresponding http methods with the `Content-Type` header preset to `multipart/form-data`. + +## Files Posting + +You can easily submit a single file: + +```js +await axios.postForm('https://httpbin.org/post', { + 'myVar' : 'foo', + 'file': document.querySelector('#fileInput').files[0] +}); +``` + +or multiple files as `multipart/form-data`: + +```js +await axios.postForm('https://httpbin.org/post', { + 'files[]': document.querySelector('#fileInput').files +}); +``` + +`FileList` object can be passed directly: + +```js +await axios.postForm('https://httpbin.org/post', document.querySelector('#fileInput').files) +``` + +All files will be sent with the same field names: `files[]`. + +## 🆕 HTML Form Posting (browser) + +Pass HTML Form element as a payload to submit it as `multipart/form-data` content. + +```js +await axios.postForm('https://httpbin.org/post', document.querySelector('#htmlForm')); +``` + +`FormData` and `HTMLForm` objects can also be posted as `JSON` by explicitly setting the `Content-Type` header to `application/json`: + +```js +await axios.post('https://httpbin.org/post', document.querySelector('#htmlForm'), { + headers: { + 'Content-Type': 'application/json' + } +}) +``` + +For example, the Form + +```html +
+ + + + + + + + + +
+``` + +will be submitted as the following JSON object: + +```js +{ + "foo": "1", + "deep": { + "prop": { + "spaced": "3" + } + }, + "baz": [ + "4", + "5" + ], + "user": { + "age": "value2" + } +} +```` + +Sending `Blobs`/`Files` as JSON (`base64`) is not currently supported. + +## 🆕 Progress capturing + +Axios supports both browser and node environments to capture request upload/download progress. +The frequency of progress events is forced to be limited to `3` times per second. + +```js +await axios.post(url, data, { + onUploadProgress: function (axiosProgressEvent) { + /*{ + loaded: number; + total?: number; + progress?: number; // in range [0..1] + bytes: number; // how many bytes have been transferred since the last trigger (delta) + estimated?: number; // estimated time in seconds + rate?: number; // upload speed in bytes + upload: true; // upload sign + }*/ + }, + + onDownloadProgress: function (axiosProgressEvent) { + /*{ + loaded: number; + total?: number; + progress?: number; + bytes: number; + estimated?: number; + rate?: number; // download speed in bytes + download: true; // download sign + }*/ + } +}); +``` + +You can also track stream upload/download progress in node.js: + +```js +const {data} = await axios.post(SERVER_URL, readableStream, { + onUploadProgress: ({progress}) => { + console.log((progress * 100).toFixed(2)); + }, + + headers: { + 'Content-Length': contentLength + }, + + maxRedirects: 0 // avoid buffering the entire stream +}); +```` + +> **Note:** +> Capturing FormData upload progress is not currently supported in node.js environments. + +> **⚠️ Warning** +> It is recommended to disable redirects by setting maxRedirects: 0 to upload the stream in the **node.js** environment, +> as follow-redirects package will buffer the entire stream in RAM without following the "backpressure" algorithm. + + +## 🆕 Rate limiting + +Download and upload rate limits can only be set for the http adapter (node.js): + +```js +const {data} = await axios.post(LOCAL_SERVER_URL, myBuffer, { + onUploadProgress: ({progress, rate}) => { + console.log(`Upload [${(progress*100).toFixed(2)}%]: ${(rate / 1024).toFixed(2)}KB/s`) + }, + + maxRate: [100 * 1024], // 100KB/s limit +}); +``` + +## 🆕 AxiosHeaders + +Axios has its own `AxiosHeaders` class to manipulate headers using a Map-like API that guarantees caseless work. +Although HTTP is case-insensitive in headers, Axios will retain the case of the original header for stylistic reasons +and for a workaround when servers mistakenly consider the header's case. +The old approach of directly manipulating headers object is still available, but deprecated and not recommended for future usage. + +### Working with headers + +An AxiosHeaders object instance can contain different types of internal values. that control setting and merging logic. +The final headers object with string values is obtained by Axios by calling the `toJSON` method. + +> Note: By JSON here we mean an object consisting only of string values intended to be sent over the network. + +The header value can be one of the following types: +- `string` - normal string value that will be sent to the server +- `null` - skip header when rendering to JSON +- `false` - skip header when rendering to JSON, additionally indicates that `set` method must be called with `rewrite` option set to `true` + to overwrite this value (Axios uses this internally to allow users to opt out of installing certain headers like `User-Agent` or `Content-Type`) +- `undefined` - value is not set + +> Note: The header value is considered set if it is not equal to undefined. + +The headers object is always initialized inside interceptors and transformers: + +```ts + axios.interceptors.request.use((request: InternalAxiosRequestConfig) => { + request.headers.set('My-header', 'value'); + + request.headers.set({ + "My-set-header1": "my-set-value1", + "My-set-header2": "my-set-value2" + }); + + request.headers.set('User-Agent', false); // disable subsequent setting the header by Axios + + request.headers.setContentType('text/plain'); + + request.headers['My-set-header2'] = 'newValue' // direct access is deprecated + + return request; + } + ); +```` + +You can iterate over an `AxiosHeaders` instance using a `for...of` statement: + +````js +const headers = new AxiosHeaders({ + foo: '1', + bar: '2', + baz: '3' +}); + +for(const [header, value] of headers) { + console.log(header, value); +} + +// foo 1 +// bar 2 +// baz 3 +```` + +### new AxiosHeaders(headers?) + +Constructs a new `AxiosHeaders` instance. + +``` +constructor(headers?: RawAxiosHeaders | AxiosHeaders | string); +``` + +If the headers object is a string, it will be parsed as RAW HTTP headers. + +````js +const headers = new AxiosHeaders(` +Host: www.bing.com +User-Agent: curl/7.54.0 +Accept: */*`); + +console.log(headers); + +// Object [AxiosHeaders] { +// host: 'www.bing.com', +// 'user-agent': 'curl/7.54.0', +// accept: '*/*' +// } +```` + +### AxiosHeaders#set + +```ts +set(headerName, value: Axios, rewrite?: boolean); +set(headerName, value, rewrite?: (this: AxiosHeaders, value: string, name: string, headers: RawAxiosHeaders) => boolean); +set(headers?: RawAxiosHeaders | AxiosHeaders | string, rewrite?: boolean); +``` + +The `rewrite` argument controls the overwriting behavior: +- `false` - do not overwrite if header's value is set (is not `undefined`) +- `undefined` (default) - overwrite the header unless its value is set to `false` +- `true` - rewrite anyway + +The option can also accept a user-defined function that determines whether the value should be overwritten or not. + +Returns `this`. + +### AxiosHeaders#get(header) + +``` + get(headerName: string, matcher?: true | AxiosHeaderMatcher): AxiosHeaderValue; + get(headerName: string, parser: RegExp): RegExpExecArray | null; +```` + +Returns the internal value of the header. It can take an extra argument to parse the header's value with `RegExp.exec`, +matcher function or internal key-value parser. + +```ts +const headers = new AxiosHeaders({ + 'Content-Type': 'multipart/form-data; boundary=Asrf456BGe4h' +}); + +console.log(headers.get('Content-Type')); +// multipart/form-data; boundary=Asrf456BGe4h + +console.log(headers.get('Content-Type', true)); // parse key-value pairs from a string separated with \s,;= delimiters: +// [Object: null prototype] { +// 'multipart/form-data': undefined, +// boundary: 'Asrf456BGe4h' +// } + + +console.log(headers.get('Content-Type', (value, name, headers) => { + return String(value).replace(/a/g, 'ZZZ'); +})); +// multipZZZrt/form-dZZZtZZZ; boundZZZry=Asrf456BGe4h + +console.log(headers.get('Content-Type', /boundary=(\w+)/)?.[0]); +// boundary=Asrf456BGe4h + +``` + +Returns the value of the header. + +### AxiosHeaders#has(header, matcher?) + +``` +has(header: string, matcher?: AxiosHeaderMatcher): boolean; +``` + +Returns `true` if the header is set (has no `undefined` value). + +### AxiosHeaders#delete(header, matcher?) + +``` +delete(header: string | string[], matcher?: AxiosHeaderMatcher): boolean; +``` + +Returns `true` if at least one header has been removed. + +### AxiosHeaders#clear(matcher?) + +``` +clear(matcher?: AxiosHeaderMatcher): boolean; +``` + +Removes all headers. +Unlike the `delete` method matcher, this optional matcher will be used to match against the header name rather than the value. + +```ts +const headers = new AxiosHeaders({ + 'foo': '1', + 'x-foo': '2', + 'x-bar': '3', +}); + +console.log(headers.clear(/^x-/)); // true + +console.log(headers.toJSON()); // [Object: null prototype] { foo: '1' } +``` + +Returns `true` if at least one header has been cleared. + +### AxiosHeaders#normalize(format); + +If the headers object was changed directly, it can have duplicates with the same name but in different cases. +This method normalizes the headers object by combining duplicate keys into one. +Axios uses this method internally after calling each interceptor. +Set `format` to true for converting headers name to lowercase and capitalize the initial letters (`cOntEnt-type` => `Content-Type`) + +```js +const headers = new AxiosHeaders({ + 'foo': '1', +}); + +headers.Foo = '2'; +headers.FOO = '3'; + +console.log(headers.toJSON()); // [Object: null prototype] { foo: '1', Foo: '2', FOO: '3' } +console.log(headers.normalize().toJSON()); // [Object: null prototype] { foo: '3' } +console.log(headers.normalize(true).toJSON()); // [Object: null prototype] { Foo: '3' } +``` + +Returns `this`. + +### AxiosHeaders#concat(...targets) + +``` +concat(...targets: Array): AxiosHeaders; +``` + +Merges the instance with targets into a new `AxiosHeaders` instance. If the target is a string, it will be parsed as RAW HTTP headers. + +Returns a new `AxiosHeaders` instance. + +### AxiosHeaders#toJSON(asStrings?) + +```` +toJSON(asStrings?: boolean): RawAxiosHeaders; +```` + +Resolve all internal headers values into a new null prototype object. +Set `asStrings` to true to resolve arrays as a string containing all elements, separated by commas. + +### AxiosHeaders.from(thing?) + +```` +from(thing?: AxiosHeaders | RawAxiosHeaders | string): AxiosHeaders; +```` + +Returns a new `AxiosHeaders` instance created from the raw headers passed in, +or simply returns the given headers object if it's an `AxiosHeaders` instance. + +### AxiosHeaders.concat(...targets) + +```` +concat(...targets: Array): AxiosHeaders; +```` + +Returns a new `AxiosHeaders` instance created by merging the target objects. + +### Shortcuts + +The following shortcuts are available: + +- `setContentType`, `getContentType`, `hasContentType` + +- `setContentLength`, `getContentLength`, `hasContentLength` + +- `setAccept`, `getAccept`, `hasAccept` + +- `setUserAgent`, `getUserAgent`, `hasUserAgent` + +- `setContentEncoding`, `getContentEncoding`, `hasContentEncoding` + +## 🔥 Fetch adapter + +Fetch adapter was introduced in `v1.7.0`. By default, it will be used if `xhr` and `http` adapters are not available in the build, +or not supported by the environment. +To use it by default, it must be selected explicitly: + +```js +const {data} = axios.get(url, { + adapter: 'fetch' // by default ['xhr', 'http', 'fetch'] +}) +``` + +You can create a separate instance for this: + +```js +const fetchAxios = axios.create({ + adapter: 'fetch' +}); + +const {data} = fetchAxios.get(url); +``` + +The adapter supports the same functionality as `xhr` adapter, **including upload and download progress capturing**. +Also, it supports additional response types such as `stream` and `formdata` (if supported by the environment). + +## Semver + +Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes. + +## Promises + +axios depends on a native ES6 Promise implementation to be [supported](https://caniuse.com/promises). +If your environment doesn't support ES6 Promises, you can [polyfill](https://github.com/jakearchibald/es6-promise). + +## TypeScript + +axios includes [TypeScript](https://typescriptlang.org) definitions and a type guard for axios errors. + +```typescript +let user: User = null; +try { + const { data } = await axios.get('/user?ID=12345'); + user = data.userDetails; +} catch (error) { + if (axios.isAxiosError(error)) { + handleAxiosError(error); + } else { + handleUnexpectedError(error); + } +} +``` + +Because axios dual publishes with an ESM default export and a CJS `module.exports`, there are some caveats. +The recommended setting is to use `"moduleResolution": "node16"` (this is implied by `"module": "node16"`). Note that this requires TypeScript 4.7 or greater. +If use ESM, your settings should be fine. +If you compile TypeScript to CJS and you can’t use `"moduleResolution": "node 16"`, you have to enable `esModuleInterop`. +If you use TypeScript to type check CJS JavaScript code, your only option is to use `"moduleResolution": "node16"`. + +## Online one-click setup + +You can use Gitpod, an online IDE(which is free for Open Source) for contributing or running the examples online. + +[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/axios/axios/blob/main/examples/server.js) + + +## Resources + +* [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md) +* [Ecosystem](https://github.com/axios/axios/blob/v1.x/ECOSYSTEM.md) +* [Contributing Guide](https://github.com/axios/axios/blob/v1.x/CONTRIBUTING.md) +* [Code of Conduct](https://github.com/axios/axios/blob/v1.x/CODE_OF_CONDUCT.md) + +## Credits + +axios is heavily inspired by the [$http service](https://docs.angularjs.org/api/ng/service/$http) provided in [AngularJS](https://angularjs.org/). Ultimately axios is an effort to provide a standalone `$http`-like service for use outside of AngularJS. + +## License + +[MIT](LICENSE) diff --git a/node_modules/axios/dist/axios.js b/node_modules/axios/dist/axios.js new file mode 100644 index 0000000..e1b637a --- /dev/null +++ b/node_modules/axios/dist/axios.js @@ -0,0 +1,4296 @@ +/*! Axios v1.10.0 Copyright (c) 2025 Matt Zabriskie and contributors */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.axios = factory()); +})(this, (function () { 'use strict'; + + function _AsyncGenerator(e) { + var r, t; + function resume(r, t) { + try { + var n = e[r](t), + o = n.value, + u = o instanceof _OverloadYield; + Promise.resolve(u ? o.v : o).then(function (t) { + if (u) { + var i = "return" === r ? "return" : "next"; + if (!o.k || t.done) return resume(i, t); + t = e[i](t).value; + } + settle(n.done ? "return" : "normal", t); + }, function (e) { + resume("throw", e); + }); + } catch (e) { + settle("throw", e); + } + } + function settle(e, n) { + switch (e) { + case "return": + r.resolve({ + value: n, + done: !0 + }); + break; + case "throw": + r.reject(n); + break; + default: + r.resolve({ + value: n, + done: !1 + }); + } + (r = r.next) ? resume(r.key, r.arg) : t = null; + } + this._invoke = function (e, n) { + return new Promise(function (o, u) { + var i = { + key: e, + arg: n, + resolve: o, + reject: u, + next: null + }; + t ? t = t.next = i : (r = t = i, resume(e, n)); + }); + }, "function" != typeof e.return && (this.return = void 0); + } + _AsyncGenerator.prototype["function" == typeof Symbol && Symbol.asyncIterator || "@@asyncIterator"] = function () { + return this; + }, _AsyncGenerator.prototype.next = function (e) { + return this._invoke("next", e); + }, _AsyncGenerator.prototype.throw = function (e) { + return this._invoke("throw", e); + }, _AsyncGenerator.prototype.return = function (e) { + return this._invoke("return", e); + }; + function _OverloadYield(t, e) { + this.v = t, this.k = e; + } + function _asyncGeneratorDelegate(t) { + var e = {}, + n = !1; + function pump(e, r) { + return n = !0, r = new Promise(function (n) { + n(t[e](r)); + }), { + done: !1, + value: new _OverloadYield(r, 1) + }; + } + return e["undefined" != typeof Symbol && Symbol.iterator || "@@iterator"] = function () { + return this; + }, e.next = function (t) { + return n ? (n = !1, t) : pump("next", t); + }, "function" == typeof t.throw && (e.throw = function (t) { + if (n) throw n = !1, t; + return pump("throw", t); + }), "function" == typeof t.return && (e.return = function (t) { + return n ? (n = !1, t) : pump("return", t); + }), e; + } + function _asyncIterator(r) { + var n, + t, + o, + e = 2; + for ("undefined" != typeof Symbol && (t = Symbol.asyncIterator, o = Symbol.iterator); e--;) { + if (t && null != (n = r[t])) return n.call(r); + if (o && null != (n = r[o])) return new AsyncFromSyncIterator(n.call(r)); + t = "@@asyncIterator", o = "@@iterator"; + } + throw new TypeError("Object is not async iterable"); + } + function AsyncFromSyncIterator(r) { + function AsyncFromSyncIteratorContinuation(r) { + if (Object(r) !== r) return Promise.reject(new TypeError(r + " is not an object.")); + var n = r.done; + return Promise.resolve(r.value).then(function (r) { + return { + value: r, + done: n + }; + }); + } + return AsyncFromSyncIterator = function (r) { + this.s = r, this.n = r.next; + }, AsyncFromSyncIterator.prototype = { + s: null, + n: null, + next: function () { + return AsyncFromSyncIteratorContinuation(this.n.apply(this.s, arguments)); + }, + return: function (r) { + var n = this.s.return; + return void 0 === n ? Promise.resolve({ + value: r, + done: !0 + }) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments)); + }, + throw: function (r) { + var n = this.s.return; + return void 0 === n ? Promise.reject(r) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments)); + } + }, new AsyncFromSyncIterator(r); + } + function _awaitAsyncGenerator(e) { + return new _OverloadYield(e, 0); + } + function _iterableToArrayLimit(r, l) { + var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; + if (null != t) { + var e, + n, + i, + u, + a = [], + f = !0, + o = !1; + try { + if (i = (t = t.call(r)).next, 0 === l) { + if (Object(t) !== t) return; + f = !1; + } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); + } catch (r) { + o = !0, n = r; + } finally { + try { + if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; + } finally { + if (o) throw n; + } + } + return a; + } + } + function ownKeys(e, r) { + var t = Object.keys(e); + if (Object.getOwnPropertySymbols) { + var o = Object.getOwnPropertySymbols(e); + r && (o = o.filter(function (r) { + return Object.getOwnPropertyDescriptor(e, r).enumerable; + })), t.push.apply(t, o); + } + return t; + } + function _objectSpread2(e) { + for (var r = 1; r < arguments.length; r++) { + var t = null != arguments[r] ? arguments[r] : {}; + r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { + _defineProperty(e, r, t[r]); + }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { + Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); + }); + } + return e; + } + function _regeneratorRuntime() { + _regeneratorRuntime = function () { + return e; + }; + var t, + e = {}, + r = Object.prototype, + n = r.hasOwnProperty, + o = Object.defineProperty || function (t, e, r) { + t[e] = r.value; + }, + i = "function" == typeof Symbol ? Symbol : {}, + a = i.iterator || "@@iterator", + c = i.asyncIterator || "@@asyncIterator", + u = i.toStringTag || "@@toStringTag"; + function define(t, e, r) { + return Object.defineProperty(t, e, { + value: r, + enumerable: !0, + configurable: !0, + writable: !0 + }), t[e]; + } + try { + define({}, ""); + } catch (t) { + define = function (t, e, r) { + return t[e] = r; + }; + } + function wrap(t, e, r, n) { + var i = e && e.prototype instanceof Generator ? e : Generator, + a = Object.create(i.prototype), + c = new Context(n || []); + return o(a, "_invoke", { + value: makeInvokeMethod(t, r, c) + }), a; + } + function tryCatch(t, e, r) { + try { + return { + type: "normal", + arg: t.call(e, r) + }; + } catch (t) { + return { + type: "throw", + arg: t + }; + } + } + e.wrap = wrap; + var h = "suspendedStart", + l = "suspendedYield", + f = "executing", + s = "completed", + y = {}; + function Generator() {} + function GeneratorFunction() {} + function GeneratorFunctionPrototype() {} + var p = {}; + define(p, a, function () { + return this; + }); + var d = Object.getPrototypeOf, + v = d && d(d(values([]))); + v && v !== r && n.call(v, a) && (p = v); + var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p); + function defineIteratorMethods(t) { + ["next", "throw", "return"].forEach(function (e) { + define(t, e, function (t) { + return this._invoke(e, t); + }); + }); + } + function AsyncIterator(t, e) { + function invoke(r, o, i, a) { + var c = tryCatch(t[r], t, o); + if ("throw" !== c.type) { + var u = c.arg, + h = u.value; + return h && "object" == typeof h && n.call(h, "__await") ? e.resolve(h.__await).then(function (t) { + invoke("next", t, i, a); + }, function (t) { + invoke("throw", t, i, a); + }) : e.resolve(h).then(function (t) { + u.value = t, i(u); + }, function (t) { + return invoke("throw", t, i, a); + }); + } + a(c.arg); + } + var r; + o(this, "_invoke", { + value: function (t, n) { + function callInvokeWithMethodAndArg() { + return new e(function (e, r) { + invoke(t, n, e, r); + }); + } + return r = r ? r.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg(); + } + }); + } + function makeInvokeMethod(e, r, n) { + var o = h; + return function (i, a) { + if (o === f) throw new Error("Generator is already running"); + if (o === s) { + if ("throw" === i) throw a; + return { + value: t, + done: !0 + }; + } + for (n.method = i, n.arg = a;;) { + var c = n.delegate; + if (c) { + var u = maybeInvokeDelegate(c, n); + if (u) { + if (u === y) continue; + return u; + } + } + if ("next" === n.method) n.sent = n._sent = n.arg;else if ("throw" === n.method) { + if (o === h) throw o = s, n.arg; + n.dispatchException(n.arg); + } else "return" === n.method && n.abrupt("return", n.arg); + o = f; + var p = tryCatch(e, r, n); + if ("normal" === p.type) { + if (o = n.done ? s : l, p.arg === y) continue; + return { + value: p.arg, + done: n.done + }; + } + "throw" === p.type && (o = s, n.method = "throw", n.arg = p.arg); + } + }; + } + function maybeInvokeDelegate(e, r) { + var n = r.method, + o = e.iterator[n]; + if (o === t) return r.delegate = null, "throw" === n && e.iterator.return && (r.method = "return", r.arg = t, maybeInvokeDelegate(e, r), "throw" === r.method) || "return" !== n && (r.method = "throw", r.arg = new TypeError("The iterator does not provide a '" + n + "' method")), y; + var i = tryCatch(o, e.iterator, r.arg); + if ("throw" === i.type) return r.method = "throw", r.arg = i.arg, r.delegate = null, y; + var a = i.arg; + return a ? a.done ? (r[e.resultName] = a.value, r.next = e.nextLoc, "return" !== r.method && (r.method = "next", r.arg = t), r.delegate = null, y) : a : (r.method = "throw", r.arg = new TypeError("iterator result is not an object"), r.delegate = null, y); + } + function pushTryEntry(t) { + var e = { + tryLoc: t[0] + }; + 1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e); + } + function resetTryEntry(t) { + var e = t.completion || {}; + e.type = "normal", delete e.arg, t.completion = e; + } + function Context(t) { + this.tryEntries = [{ + tryLoc: "root" + }], t.forEach(pushTryEntry, this), this.reset(!0); + } + function values(e) { + if (e || "" === e) { + var r = e[a]; + if (r) return r.call(e); + if ("function" == typeof e.next) return e; + if (!isNaN(e.length)) { + var o = -1, + i = function next() { + for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next; + return next.value = t, next.done = !0, next; + }; + return i.next = i; + } + } + throw new TypeError(typeof e + " is not iterable"); + } + return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", { + value: GeneratorFunctionPrototype, + configurable: !0 + }), o(GeneratorFunctionPrototype, "constructor", { + value: GeneratorFunction, + configurable: !0 + }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, u, "GeneratorFunction"), e.isGeneratorFunction = function (t) { + var e = "function" == typeof t && t.constructor; + return !!e && (e === GeneratorFunction || "GeneratorFunction" === (e.displayName || e.name)); + }, e.mark = function (t) { + return Object.setPrototypeOf ? Object.setPrototypeOf(t, GeneratorFunctionPrototype) : (t.__proto__ = GeneratorFunctionPrototype, define(t, u, "GeneratorFunction")), t.prototype = Object.create(g), t; + }, e.awrap = function (t) { + return { + __await: t + }; + }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () { + return this; + }), e.AsyncIterator = AsyncIterator, e.async = function (t, r, n, o, i) { + void 0 === i && (i = Promise); + var a = new AsyncIterator(wrap(t, r, n, o), i); + return e.isGeneratorFunction(r) ? a : a.next().then(function (t) { + return t.done ? t.value : a.next(); + }); + }, defineIteratorMethods(g), define(g, u, "Generator"), define(g, a, function () { + return this; + }), define(g, "toString", function () { + return "[object Generator]"; + }), e.keys = function (t) { + var e = Object(t), + r = []; + for (var n in e) r.push(n); + return r.reverse(), function next() { + for (; r.length;) { + var t = r.pop(); + if (t in e) return next.value = t, next.done = !1, next; + } + return next.done = !0, next; + }; + }, e.values = values, Context.prototype = { + constructor: Context, + reset: function (e) { + if (this.prev = 0, this.next = 0, this.sent = this._sent = t, this.done = !1, this.delegate = null, this.method = "next", this.arg = t, this.tryEntries.forEach(resetTryEntry), !e) for (var r in this) "t" === r.charAt(0) && n.call(this, r) && !isNaN(+r.slice(1)) && (this[r] = t); + }, + stop: function () { + this.done = !0; + var t = this.tryEntries[0].completion; + if ("throw" === t.type) throw t.arg; + return this.rval; + }, + dispatchException: function (e) { + if (this.done) throw e; + var r = this; + function handle(n, o) { + return a.type = "throw", a.arg = e, r.next = n, o && (r.method = "next", r.arg = t), !!o; + } + for (var o = this.tryEntries.length - 1; o >= 0; --o) { + var i = this.tryEntries[o], + a = i.completion; + if ("root" === i.tryLoc) return handle("end"); + if (i.tryLoc <= this.prev) { + var c = n.call(i, "catchLoc"), + u = n.call(i, "finallyLoc"); + if (c && u) { + if (this.prev < i.catchLoc) return handle(i.catchLoc, !0); + if (this.prev < i.finallyLoc) return handle(i.finallyLoc); + } else if (c) { + if (this.prev < i.catchLoc) return handle(i.catchLoc, !0); + } else { + if (!u) throw new Error("try statement without catch or finally"); + if (this.prev < i.finallyLoc) return handle(i.finallyLoc); + } + } + } + }, + abrupt: function (t, e) { + for (var r = this.tryEntries.length - 1; r >= 0; --r) { + var o = this.tryEntries[r]; + if (o.tryLoc <= this.prev && n.call(o, "finallyLoc") && this.prev < o.finallyLoc) { + var i = o; + break; + } + } + i && ("break" === t || "continue" === t) && i.tryLoc <= e && e <= i.finallyLoc && (i = null); + var a = i ? i.completion : {}; + return a.type = t, a.arg = e, i ? (this.method = "next", this.next = i.finallyLoc, y) : this.complete(a); + }, + complete: function (t, e) { + if ("throw" === t.type) throw t.arg; + return "break" === t.type || "continue" === t.type ? this.next = t.arg : "return" === t.type ? (this.rval = this.arg = t.arg, this.method = "return", this.next = "end") : "normal" === t.type && e && (this.next = e), y; + }, + finish: function (t) { + for (var e = this.tryEntries.length - 1; e >= 0; --e) { + var r = this.tryEntries[e]; + if (r.finallyLoc === t) return this.complete(r.completion, r.afterLoc), resetTryEntry(r), y; + } + }, + catch: function (t) { + for (var e = this.tryEntries.length - 1; e >= 0; --e) { + var r = this.tryEntries[e]; + if (r.tryLoc === t) { + var n = r.completion; + if ("throw" === n.type) { + var o = n.arg; + resetTryEntry(r); + } + return o; + } + } + throw new Error("illegal catch attempt"); + }, + delegateYield: function (e, r, n) { + return this.delegate = { + iterator: values(e), + resultName: r, + nextLoc: n + }, "next" === this.method && (this.arg = t), y; + } + }, e; + } + function _toPrimitive(t, r) { + if ("object" != typeof t || !t) return t; + var e = t[Symbol.toPrimitive]; + if (void 0 !== e) { + var i = e.call(t, r || "default"); + if ("object" != typeof i) return i; + throw new TypeError("@@toPrimitive must return a primitive value."); + } + return ("string" === r ? String : Number)(t); + } + function _toPropertyKey(t) { + var i = _toPrimitive(t, "string"); + return "symbol" == typeof i ? i : String(i); + } + function _typeof(o) { + "@babel/helpers - typeof"; + + return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { + return typeof o; + } : function (o) { + return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; + }, _typeof(o); + } + function _wrapAsyncGenerator(fn) { + return function () { + return new _AsyncGenerator(fn.apply(this, arguments)); + }; + } + function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { + try { + var info = gen[key](arg); + var value = info.value; + } catch (error) { + reject(error); + return; + } + if (info.done) { + resolve(value); + } else { + Promise.resolve(value).then(_next, _throw); + } + } + function _asyncToGenerator(fn) { + return function () { + var self = this, + args = arguments; + return new Promise(function (resolve, reject) { + var gen = fn.apply(self, args); + function _next(value) { + asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); + } + function _throw(err) { + asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); + } + _next(undefined); + }); + }; + } + function _classCallCheck(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + } + function _defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); + } + } + function _createClass(Constructor, protoProps, staticProps) { + if (protoProps) _defineProperties(Constructor.prototype, protoProps); + if (staticProps) _defineProperties(Constructor, staticProps); + Object.defineProperty(Constructor, "prototype", { + writable: false + }); + return Constructor; + } + function _defineProperty(obj, key, value) { + key = _toPropertyKey(key); + if (key in obj) { + Object.defineProperty(obj, key, { + value: value, + enumerable: true, + configurable: true, + writable: true + }); + } else { + obj[key] = value; + } + return obj; + } + function _slicedToArray(arr, i) { + return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); + } + function _toArray(arr) { + return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableRest(); + } + function _toConsumableArray(arr) { + return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); + } + function _arrayWithoutHoles(arr) { + if (Array.isArray(arr)) return _arrayLikeToArray(arr); + } + function _arrayWithHoles(arr) { + if (Array.isArray(arr)) return arr; + } + function _iterableToArray(iter) { + if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); + } + function _unsupportedIterableToArray(o, minLen) { + if (!o) return; + if (typeof o === "string") return _arrayLikeToArray(o, minLen); + var n = Object.prototype.toString.call(o).slice(8, -1); + if (n === "Object" && o.constructor) n = o.constructor.name; + if (n === "Map" || n === "Set") return Array.from(o); + if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); + } + function _arrayLikeToArray(arr, len) { + if (len == null || len > arr.length) len = arr.length; + for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; + return arr2; + } + function _nonIterableSpread() { + throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); + } + function _nonIterableRest() { + throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); + } + function _createForOfIteratorHelper(o, allowArrayLike) { + var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; + if (!it) { + if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { + if (it) o = it; + var i = 0; + var F = function () {}; + return { + s: F, + n: function () { + if (i >= o.length) return { + done: true + }; + return { + done: false, + value: o[i++] + }; + }, + e: function (e) { + throw e; + }, + f: F + }; + } + throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); + } + var normalCompletion = true, + didErr = false, + err; + return { + s: function () { + it = it.call(o); + }, + n: function () { + var step = it.next(); + normalCompletion = step.done; + return step; + }, + e: function (e) { + didErr = true; + err = e; + }, + f: function () { + try { + if (!normalCompletion && it.return != null) it.return(); + } finally { + if (didErr) throw err; + } + } + }; + } + + function bind(fn, thisArg) { + return function wrap() { + return fn.apply(thisArg, arguments); + }; + } + + // utils is a library of generic helper functions non-specific to axios + + var toString = Object.prototype.toString; + var getPrototypeOf = Object.getPrototypeOf; + var iterator = Symbol.iterator, + toStringTag = Symbol.toStringTag; + var kindOf = function (cache) { + return function (thing) { + var str = toString.call(thing); + return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase()); + }; + }(Object.create(null)); + var kindOfTest = function kindOfTest(type) { + type = type.toLowerCase(); + return function (thing) { + return kindOf(thing) === type; + }; + }; + var typeOfTest = function typeOfTest(type) { + return function (thing) { + return _typeof(thing) === type; + }; + }; + + /** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * + * @returns {boolean} True if value is an Array, otherwise false + */ + var isArray = Array.isArray; + + /** + * Determine if a value is undefined + * + * @param {*} val The value to test + * + * @returns {boolean} True if the value is undefined, otherwise false + */ + var isUndefined = typeOfTest('undefined'); + + /** + * Determine if a value is a Buffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Buffer, otherwise false + */ + function isBuffer(val) { + return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val); + } + + /** + * Determine if a value is an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ + var isArrayBuffer = kindOfTest('ArrayBuffer'); + + /** + * Determine if a value is a view on an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ + function isArrayBufferView(val) { + var result; + if (typeof ArrayBuffer !== 'undefined' && ArrayBuffer.isView) { + result = ArrayBuffer.isView(val); + } else { + result = val && val.buffer && isArrayBuffer(val.buffer); + } + return result; + } + + /** + * Determine if a value is a String + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a String, otherwise false + */ + var isString = typeOfTest('string'); + + /** + * Determine if a value is a Function + * + * @param {*} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ + var isFunction = typeOfTest('function'); + + /** + * Determine if a value is a Number + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Number, otherwise false + */ + var isNumber = typeOfTest('number'); + + /** + * Determine if a value is an Object + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an Object, otherwise false + */ + var isObject = function isObject(thing) { + return thing !== null && _typeof(thing) === 'object'; + }; + + /** + * Determine if a value is a Boolean + * + * @param {*} thing The value to test + * @returns {boolean} True if value is a Boolean, otherwise false + */ + var isBoolean = function isBoolean(thing) { + return thing === true || thing === false; + }; + + /** + * Determine if a value is a plain Object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a plain Object, otherwise false + */ + var isPlainObject = function isPlainObject(val) { + if (kindOf(val) !== 'object') { + return false; + } + var prototype = getPrototypeOf(val); + return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val); + }; + + /** + * Determine if a value is a Date + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Date, otherwise false + */ + var isDate = kindOfTest('Date'); + + /** + * Determine if a value is a File + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ + var isFile = kindOfTest('File'); + + /** + * Determine if a value is a Blob + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Blob, otherwise false + */ + var isBlob = kindOfTest('Blob'); + + /** + * Determine if a value is a FileList + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ + var isFileList = kindOfTest('FileList'); + + /** + * Determine if a value is a Stream + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Stream, otherwise false + */ + var isStream = function isStream(val) { + return isObject(val) && isFunction(val.pipe); + }; + + /** + * Determine if a value is a FormData + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an FormData, otherwise false + */ + var isFormData = function isFormData(thing) { + var kind; + return thing && (typeof FormData === 'function' && thing instanceof FormData || isFunction(thing.append) && ((kind = kindOf(thing)) === 'formdata' || + // detect form-data instance + kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')); + }; + + /** + * Determine if a value is a URLSearchParams object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ + var isURLSearchParams = kindOfTest('URLSearchParams'); + var _map = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest), + _map2 = _slicedToArray(_map, 4), + isReadableStream = _map2[0], + isRequest = _map2[1], + isResponse = _map2[2], + isHeaders = _map2[3]; + + /** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * + * @returns {String} The String freed of excess whitespace + */ + var trim = function trim(str) { + return str.trim ? str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, ''); + }; + + /** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + * + * @param {Boolean} [allOwnKeys = false] + * @returns {any} + */ + function forEach(obj, fn) { + var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}, + _ref$allOwnKeys = _ref.allOwnKeys, + allOwnKeys = _ref$allOwnKeys === void 0 ? false : _ref$allOwnKeys; + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + var i; + var l; + + // Force an array if not already something iterable + if (_typeof(obj) !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + if (isArray(obj)) { + // Iterate over array values + for (i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + var keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj); + var len = keys.length; + var key; + for (i = 0; i < len; i++) { + key = keys[i]; + fn.call(null, obj[key], key, obj); + } + } + } + function findKey(obj, key) { + key = key.toLowerCase(); + var keys = Object.keys(obj); + var i = keys.length; + var _key; + while (i-- > 0) { + _key = keys[i]; + if (key === _key.toLowerCase()) { + return _key; + } + } + return null; + } + var _global = function () { + /*eslint no-undef:0*/ + if (typeof globalThis !== "undefined") return globalThis; + return typeof self !== "undefined" ? self : typeof window !== 'undefined' ? window : global; + }(); + var isContextDefined = function isContextDefined(context) { + return !isUndefined(context) && context !== _global; + }; + + /** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * + * @returns {Object} Result of all merge properties + */ + function merge( /* obj1, obj2, obj3, ... */ + ) { + var _ref2 = isContextDefined(this) && this || {}, + caseless = _ref2.caseless; + var result = {}; + var assignValue = function assignValue(val, key) { + var targetKey = caseless && findKey(result, key) || key; + if (isPlainObject(result[targetKey]) && isPlainObject(val)) { + result[targetKey] = merge(result[targetKey], val); + } else if (isPlainObject(val)) { + result[targetKey] = merge({}, val); + } else if (isArray(val)) { + result[targetKey] = val.slice(); + } else { + result[targetKey] = val; + } + }; + for (var i = 0, l = arguments.length; i < l; i++) { + arguments[i] && forEach(arguments[i], assignValue); + } + return result; + } + + /** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * + * @param {Boolean} [allOwnKeys] + * @returns {Object} The resulting value of object a + */ + var extend = function extend(a, b, thisArg) { + var _ref3 = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {}, + allOwnKeys = _ref3.allOwnKeys; + forEach(b, function (val, key) { + if (thisArg && isFunction(val)) { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }, { + allOwnKeys: allOwnKeys + }); + return a; + }; + + /** + * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) + * + * @param {string} content with BOM + * + * @returns {string} content value without BOM + */ + var stripBOM = function stripBOM(content) { + if (content.charCodeAt(0) === 0xFEFF) { + content = content.slice(1); + } + return content; + }; + + /** + * Inherit the prototype methods from one constructor into another + * @param {function} constructor + * @param {function} superConstructor + * @param {object} [props] + * @param {object} [descriptors] + * + * @returns {void} + */ + var inherits = function inherits(constructor, superConstructor, props, descriptors) { + constructor.prototype = Object.create(superConstructor.prototype, descriptors); + constructor.prototype.constructor = constructor; + Object.defineProperty(constructor, 'super', { + value: superConstructor.prototype + }); + props && Object.assign(constructor.prototype, props); + }; + + /** + * Resolve object with deep prototype chain to a flat object + * @param {Object} sourceObj source object + * @param {Object} [destObj] + * @param {Function|Boolean} [filter] + * @param {Function} [propFilter] + * + * @returns {Object} + */ + var toFlatObject = function toFlatObject(sourceObj, destObj, filter, propFilter) { + var props; + var i; + var prop; + var merged = {}; + destObj = destObj || {}; + // eslint-disable-next-line no-eq-null,eqeqeq + if (sourceObj == null) return destObj; + do { + props = Object.getOwnPropertyNames(sourceObj); + i = props.length; + while (i-- > 0) { + prop = props[i]; + if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) { + destObj[prop] = sourceObj[prop]; + merged[prop] = true; + } + } + sourceObj = filter !== false && getPrototypeOf(sourceObj); + } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype); + return destObj; + }; + + /** + * Determines whether a string ends with the characters of a specified string + * + * @param {String} str + * @param {String} searchString + * @param {Number} [position= 0] + * + * @returns {boolean} + */ + var endsWith = function endsWith(str, searchString, position) { + str = String(str); + if (position === undefined || position > str.length) { + position = str.length; + } + position -= searchString.length; + var lastIndex = str.indexOf(searchString, position); + return lastIndex !== -1 && lastIndex === position; + }; + + /** + * Returns new array from array like object or null if failed + * + * @param {*} [thing] + * + * @returns {?Array} + */ + var toArray = function toArray(thing) { + if (!thing) return null; + if (isArray(thing)) return thing; + var i = thing.length; + if (!isNumber(i)) return null; + var arr = new Array(i); + while (i-- > 0) { + arr[i] = thing[i]; + } + return arr; + }; + + /** + * Checking if the Uint8Array exists and if it does, it returns a function that checks if the + * thing passed in is an instance of Uint8Array + * + * @param {TypedArray} + * + * @returns {Array} + */ + // eslint-disable-next-line func-names + var isTypedArray = function (TypedArray) { + // eslint-disable-next-line func-names + return function (thing) { + return TypedArray && thing instanceof TypedArray; + }; + }(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array)); + + /** + * For each entry in the object, call the function with the key and value. + * + * @param {Object} obj - The object to iterate over. + * @param {Function} fn - The function to call for each entry. + * + * @returns {void} + */ + var forEachEntry = function forEachEntry(obj, fn) { + var generator = obj && obj[iterator]; + var _iterator = generator.call(obj); + var result; + while ((result = _iterator.next()) && !result.done) { + var pair = result.value; + fn.call(obj, pair[0], pair[1]); + } + }; + + /** + * It takes a regular expression and a string, and returns an array of all the matches + * + * @param {string} regExp - The regular expression to match against. + * @param {string} str - The string to search. + * + * @returns {Array} + */ + var matchAll = function matchAll(regExp, str) { + var matches; + var arr = []; + while ((matches = regExp.exec(str)) !== null) { + arr.push(matches); + } + return arr; + }; + + /* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */ + var isHTMLForm = kindOfTest('HTMLFormElement'); + var toCamelCase = function toCamelCase(str) { + return str.toLowerCase().replace(/[-_\s]([a-z\d])(\w*)/g, function replacer(m, p1, p2) { + return p1.toUpperCase() + p2; + }); + }; + + /* Creating a function that will check if an object has a property. */ + var hasOwnProperty = function (_ref4) { + var hasOwnProperty = _ref4.hasOwnProperty; + return function (obj, prop) { + return hasOwnProperty.call(obj, prop); + }; + }(Object.prototype); + + /** + * Determine if a value is a RegExp object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a RegExp object, otherwise false + */ + var isRegExp = kindOfTest('RegExp'); + var reduceDescriptors = function reduceDescriptors(obj, reducer) { + var descriptors = Object.getOwnPropertyDescriptors(obj); + var reducedDescriptors = {}; + forEach(descriptors, function (descriptor, name) { + var ret; + if ((ret = reducer(descriptor, name, obj)) !== false) { + reducedDescriptors[name] = ret || descriptor; + } + }); + Object.defineProperties(obj, reducedDescriptors); + }; + + /** + * Makes all methods read-only + * @param {Object} obj + */ + + var freezeMethods = function freezeMethods(obj) { + reduceDescriptors(obj, function (descriptor, name) { + // skip restricted props in strict mode + if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) { + return false; + } + var value = obj[name]; + if (!isFunction(value)) return; + descriptor.enumerable = false; + if ('writable' in descriptor) { + descriptor.writable = false; + return; + } + if (!descriptor.set) { + descriptor.set = function () { + throw Error('Can not rewrite read-only method \'' + name + '\''); + }; + } + }); + }; + var toObjectSet = function toObjectSet(arrayOrString, delimiter) { + var obj = {}; + var define = function define(arr) { + arr.forEach(function (value) { + obj[value] = true; + }); + }; + isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter)); + return obj; + }; + var noop = function noop() {}; + var toFiniteNumber = function toFiniteNumber(value, defaultValue) { + return value != null && Number.isFinite(value = +value) ? value : defaultValue; + }; + + /** + * If the thing is a FormData object, return true, otherwise return false. + * + * @param {unknown} thing - The thing to check. + * + * @returns {boolean} + */ + function isSpecCompliantForm(thing) { + return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]); + } + var toJSONObject = function toJSONObject(obj) { + var stack = new Array(10); + var visit = function visit(source, i) { + if (isObject(source)) { + if (stack.indexOf(source) >= 0) { + return; + } + if (!('toJSON' in source)) { + stack[i] = source; + var target = isArray(source) ? [] : {}; + forEach(source, function (value, key) { + var reducedValue = visit(value, i + 1); + !isUndefined(reducedValue) && (target[key] = reducedValue); + }); + stack[i] = undefined; + return target; + } + } + return source; + }; + return visit(obj, 0); + }; + var isAsyncFn = kindOfTest('AsyncFunction'); + var isThenable = function isThenable(thing) { + return thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing["catch"]); + }; + + // original code + // https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34 + + var _setImmediate = function (setImmediateSupported, postMessageSupported) { + if (setImmediateSupported) { + return setImmediate; + } + return postMessageSupported ? function (token, callbacks) { + _global.addEventListener("message", function (_ref5) { + var source = _ref5.source, + data = _ref5.data; + if (source === _global && data === token) { + callbacks.length && callbacks.shift()(); + } + }, false); + return function (cb) { + callbacks.push(cb); + _global.postMessage(token, "*"); + }; + }("axios@".concat(Math.random()), []) : function (cb) { + return setTimeout(cb); + }; + }(typeof setImmediate === 'function', isFunction(_global.postMessage)); + var asap = typeof queueMicrotask !== 'undefined' ? queueMicrotask.bind(_global) : typeof process !== 'undefined' && process.nextTick || _setImmediate; + + // ********************* + + var isIterable = function isIterable(thing) { + return thing != null && isFunction(thing[iterator]); + }; + var utils$1 = { + isArray: isArray, + isArrayBuffer: isArrayBuffer, + isBuffer: isBuffer, + isFormData: isFormData, + isArrayBufferView: isArrayBufferView, + isString: isString, + isNumber: isNumber, + isBoolean: isBoolean, + isObject: isObject, + isPlainObject: isPlainObject, + isReadableStream: isReadableStream, + isRequest: isRequest, + isResponse: isResponse, + isHeaders: isHeaders, + isUndefined: isUndefined, + isDate: isDate, + isFile: isFile, + isBlob: isBlob, + isRegExp: isRegExp, + isFunction: isFunction, + isStream: isStream, + isURLSearchParams: isURLSearchParams, + isTypedArray: isTypedArray, + isFileList: isFileList, + forEach: forEach, + merge: merge, + extend: extend, + trim: trim, + stripBOM: stripBOM, + inherits: inherits, + toFlatObject: toFlatObject, + kindOf: kindOf, + kindOfTest: kindOfTest, + endsWith: endsWith, + toArray: toArray, + forEachEntry: forEachEntry, + matchAll: matchAll, + isHTMLForm: isHTMLForm, + hasOwnProperty: hasOwnProperty, + hasOwnProp: hasOwnProperty, + // an alias to avoid ESLint no-prototype-builtins detection + reduceDescriptors: reduceDescriptors, + freezeMethods: freezeMethods, + toObjectSet: toObjectSet, + toCamelCase: toCamelCase, + noop: noop, + toFiniteNumber: toFiniteNumber, + findKey: findKey, + global: _global, + isContextDefined: isContextDefined, + isSpecCompliantForm: isSpecCompliantForm, + toJSONObject: toJSONObject, + isAsyncFn: isAsyncFn, + isThenable: isThenable, + setImmediate: _setImmediate, + asap: asap, + isIterable: isIterable + }; + + /** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [config] The config. + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * + * @returns {Error} The created error. + */ + function AxiosError(message, code, config, request, response) { + Error.call(this); + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } else { + this.stack = new Error().stack; + } + this.message = message; + this.name = 'AxiosError'; + code && (this.code = code); + config && (this.config = config); + request && (this.request = request); + if (response) { + this.response = response; + this.status = response.status ? response.status : null; + } + } + utils$1.inherits(AxiosError, Error, { + toJSON: function toJSON() { + return { + // Standard + message: this.message, + name: this.name, + // Microsoft + description: this.description, + number: this.number, + // Mozilla + fileName: this.fileName, + lineNumber: this.lineNumber, + columnNumber: this.columnNumber, + stack: this.stack, + // Axios + config: utils$1.toJSONObject(this.config), + code: this.code, + status: this.status + }; + } + }); + var prototype$1 = AxiosError.prototype; + var descriptors = {}; + ['ERR_BAD_OPTION_VALUE', 'ERR_BAD_OPTION', 'ECONNABORTED', 'ETIMEDOUT', 'ERR_NETWORK', 'ERR_FR_TOO_MANY_REDIRECTS', 'ERR_DEPRECATED', 'ERR_BAD_RESPONSE', 'ERR_BAD_REQUEST', 'ERR_CANCELED', 'ERR_NOT_SUPPORT', 'ERR_INVALID_URL' + // eslint-disable-next-line func-names + ].forEach(function (code) { + descriptors[code] = { + value: code + }; + }); + Object.defineProperties(AxiosError, descriptors); + Object.defineProperty(prototype$1, 'isAxiosError', { + value: true + }); + + // eslint-disable-next-line func-names + AxiosError.from = function (error, code, config, request, response, customProps) { + var axiosError = Object.create(prototype$1); + utils$1.toFlatObject(error, axiosError, function filter(obj) { + return obj !== Error.prototype; + }, function (prop) { + return prop !== 'isAxiosError'; + }); + AxiosError.call(axiosError, error.message, code, config, request, response); + axiosError.cause = error; + axiosError.name = error.name; + customProps && Object.assign(axiosError, customProps); + return axiosError; + }; + + // eslint-disable-next-line strict + var httpAdapter = null; + + /** + * Determines if the given thing is a array or js object. + * + * @param {string} thing - The object or array to be visited. + * + * @returns {boolean} + */ + function isVisitable(thing) { + return utils$1.isPlainObject(thing) || utils$1.isArray(thing); + } + + /** + * It removes the brackets from the end of a string + * + * @param {string} key - The key of the parameter. + * + * @returns {string} the key without the brackets. + */ + function removeBrackets(key) { + return utils$1.endsWith(key, '[]') ? key.slice(0, -2) : key; + } + + /** + * It takes a path, a key, and a boolean, and returns a string + * + * @param {string} path - The path to the current key. + * @param {string} key - The key of the current object being iterated over. + * @param {string} dots - If true, the key will be rendered with dots instead of brackets. + * + * @returns {string} The path to the current key. + */ + function renderKey(path, key, dots) { + if (!path) return key; + return path.concat(key).map(function each(token, i) { + // eslint-disable-next-line no-param-reassign + token = removeBrackets(token); + return !dots && i ? '[' + token + ']' : token; + }).join(dots ? '.' : ''); + } + + /** + * If the array is an array and none of its elements are visitable, then it's a flat array. + * + * @param {Array} arr - The array to check + * + * @returns {boolean} + */ + function isFlatArray(arr) { + return utils$1.isArray(arr) && !arr.some(isVisitable); + } + var predicates = utils$1.toFlatObject(utils$1, {}, null, function filter(prop) { + return /^is[A-Z]/.test(prop); + }); + + /** + * Convert a data object to FormData + * + * @param {Object} obj + * @param {?Object} [formData] + * @param {?Object} [options] + * @param {Function} [options.visitor] + * @param {Boolean} [options.metaTokens = true] + * @param {Boolean} [options.dots = false] + * @param {?Boolean} [options.indexes = false] + * + * @returns {Object} + **/ + + /** + * It converts an object into a FormData object + * + * @param {Object} obj - The object to convert to form data. + * @param {string} formData - The FormData object to append to. + * @param {Object} options + * + * @returns + */ + function toFormData(obj, formData, options) { + if (!utils$1.isObject(obj)) { + throw new TypeError('target must be an object'); + } + + // eslint-disable-next-line no-param-reassign + formData = formData || new (FormData)(); + + // eslint-disable-next-line no-param-reassign + options = utils$1.toFlatObject(options, { + metaTokens: true, + dots: false, + indexes: false + }, false, function defined(option, source) { + // eslint-disable-next-line no-eq-null,eqeqeq + return !utils$1.isUndefined(source[option]); + }); + var metaTokens = options.metaTokens; + // eslint-disable-next-line no-use-before-define + var visitor = options.visitor || defaultVisitor; + var dots = options.dots; + var indexes = options.indexes; + var _Blob = options.Blob || typeof Blob !== 'undefined' && Blob; + var useBlob = _Blob && utils$1.isSpecCompliantForm(formData); + if (!utils$1.isFunction(visitor)) { + throw new TypeError('visitor must be a function'); + } + function convertValue(value) { + if (value === null) return ''; + if (utils$1.isDate(value)) { + return value.toISOString(); + } + if (utils$1.isBoolean(value)) { + return value.toString(); + } + if (!useBlob && utils$1.isBlob(value)) { + throw new AxiosError('Blob is not supported. Use a Buffer instead.'); + } + if (utils$1.isArrayBuffer(value) || utils$1.isTypedArray(value)) { + return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value); + } + return value; + } + + /** + * Default visitor. + * + * @param {*} value + * @param {String|Number} key + * @param {Array} path + * @this {FormData} + * + * @returns {boolean} return true to visit the each prop of the value recursively + */ + function defaultVisitor(value, key, path) { + var arr = value; + if (value && !path && _typeof(value) === 'object') { + if (utils$1.endsWith(key, '{}')) { + // eslint-disable-next-line no-param-reassign + key = metaTokens ? key : key.slice(0, -2); + // eslint-disable-next-line no-param-reassign + value = JSON.stringify(value); + } else if (utils$1.isArray(value) && isFlatArray(value) || (utils$1.isFileList(value) || utils$1.endsWith(key, '[]')) && (arr = utils$1.toArray(value))) { + // eslint-disable-next-line no-param-reassign + key = removeBrackets(key); + arr.forEach(function each(el, index) { + !(utils$1.isUndefined(el) || el === null) && formData.append( + // eslint-disable-next-line no-nested-ternary + indexes === true ? renderKey([key], index, dots) : indexes === null ? key : key + '[]', convertValue(el)); + }); + return false; + } + } + if (isVisitable(value)) { + return true; + } + formData.append(renderKey(path, key, dots), convertValue(value)); + return false; + } + var stack = []; + var exposedHelpers = Object.assign(predicates, { + defaultVisitor: defaultVisitor, + convertValue: convertValue, + isVisitable: isVisitable + }); + function build(value, path) { + if (utils$1.isUndefined(value)) return; + if (stack.indexOf(value) !== -1) { + throw Error('Circular reference detected in ' + path.join('.')); + } + stack.push(value); + utils$1.forEach(value, function each(el, key) { + var result = !(utils$1.isUndefined(el) || el === null) && visitor.call(formData, el, utils$1.isString(key) ? key.trim() : key, path, exposedHelpers); + if (result === true) { + build(el, path ? path.concat(key) : [key]); + } + }); + stack.pop(); + } + if (!utils$1.isObject(obj)) { + throw new TypeError('data must be an object'); + } + build(obj); + return formData; + } + + /** + * It encodes a string by replacing all characters that are not in the unreserved set with + * their percent-encoded equivalents + * + * @param {string} str - The string to encode. + * + * @returns {string} The encoded string. + */ + function encode$1(str) { + var charMap = { + '!': '%21', + "'": '%27', + '(': '%28', + ')': '%29', + '~': '%7E', + '%20': '+', + '%00': '\x00' + }; + return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) { + return charMap[match]; + }); + } + + /** + * It takes a params object and converts it to a FormData object + * + * @param {Object} params - The parameters to be converted to a FormData object. + * @param {Object} options - The options object passed to the Axios constructor. + * + * @returns {void} + */ + function AxiosURLSearchParams(params, options) { + this._pairs = []; + params && toFormData(params, this, options); + } + var prototype = AxiosURLSearchParams.prototype; + prototype.append = function append(name, value) { + this._pairs.push([name, value]); + }; + prototype.toString = function toString(encoder) { + var _encode = encoder ? function (value) { + return encoder.call(this, value, encode$1); + } : encode$1; + return this._pairs.map(function each(pair) { + return _encode(pair[0]) + '=' + _encode(pair[1]); + }, '').join('&'); + }; + + /** + * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their + * URI encoded counterparts + * + * @param {string} val The value to be encoded. + * + * @returns {string} The encoded value. + */ + function encode(val) { + return encodeURIComponent(val).replace(/%3A/gi, ':').replace(/%24/g, '$').replace(/%2C/gi, ',').replace(/%20/g, '+').replace(/%5B/gi, '[').replace(/%5D/gi, ']'); + } + + /** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @param {?(object|Function)} options + * + * @returns {string} The formatted url + */ + function buildURL(url, params, options) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + var _encode = options && options.encode || encode; + if (utils$1.isFunction(options)) { + options = { + serialize: options + }; + } + var serializeFn = options && options.serialize; + var serializedParams; + if (serializeFn) { + serializedParams = serializeFn(params, options); + } else { + serializedParams = utils$1.isURLSearchParams(params) ? params.toString() : new AxiosURLSearchParams(params, options).toString(_encode); + } + if (serializedParams) { + var hashmarkIndex = url.indexOf("#"); + if (hashmarkIndex !== -1) { + url = url.slice(0, hashmarkIndex); + } + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + return url; + } + + var InterceptorManager = /*#__PURE__*/function () { + function InterceptorManager() { + _classCallCheck(this, InterceptorManager); + this.handlers = []; + } + + /** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ + _createClass(InterceptorManager, [{ + key: "use", + value: function use(fulfilled, rejected, options) { + this.handlers.push({ + fulfilled: fulfilled, + rejected: rejected, + synchronous: options ? options.synchronous : false, + runWhen: options ? options.runWhen : null + }); + return this.handlers.length - 1; + } + + /** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + * + * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise + */ + }, { + key: "eject", + value: function eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } + } + + /** + * Clear all interceptors from the stack + * + * @returns {void} + */ + }, { + key: "clear", + value: function clear() { + if (this.handlers) { + this.handlers = []; + } + } + + /** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + * + * @returns {void} + */ + }, { + key: "forEach", + value: function forEach(fn) { + utils$1.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); + } + }]); + return InterceptorManager; + }(); + var InterceptorManager$1 = InterceptorManager; + + var transitionalDefaults = { + silentJSONParsing: true, + forcedJSONParsing: true, + clarifyTimeoutError: false + }; + + var URLSearchParams$1 = typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams; + + var FormData$1 = typeof FormData !== 'undefined' ? FormData : null; + + var Blob$1 = typeof Blob !== 'undefined' ? Blob : null; + + var platform$1 = { + isBrowser: true, + classes: { + URLSearchParams: URLSearchParams$1, + FormData: FormData$1, + Blob: Blob$1 + }, + protocols: ['http', 'https', 'file', 'blob', 'url', 'data'] + }; + + var hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined'; + var _navigator = (typeof navigator === "undefined" ? "undefined" : _typeof(navigator)) === 'object' && navigator || undefined; + + /** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + * + * @returns {boolean} + */ + var hasStandardBrowserEnv = hasBrowserEnv && (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0); + + /** + * Determine if we're running in a standard browser webWorker environment + * + * Although the `isStandardBrowserEnv` method indicates that + * `allows axios to run in a web worker`, the WebWorker will still be + * filtered out due to its judgment standard + * `typeof window !== 'undefined' && typeof document !== 'undefined'`. + * This leads to a problem when axios post `FormData` in webWorker + */ + var hasStandardBrowserWebWorkerEnv = function () { + return typeof WorkerGlobalScope !== 'undefined' && + // eslint-disable-next-line no-undef + self instanceof WorkerGlobalScope && typeof self.importScripts === 'function'; + }(); + var origin = hasBrowserEnv && window.location.href || 'http://localhost'; + + var utils = /*#__PURE__*/Object.freeze({ + __proto__: null, + hasBrowserEnv: hasBrowserEnv, + hasStandardBrowserWebWorkerEnv: hasStandardBrowserWebWorkerEnv, + hasStandardBrowserEnv: hasStandardBrowserEnv, + navigator: _navigator, + origin: origin + }); + + var platform = _objectSpread2(_objectSpread2({}, utils), platform$1); + + function toURLEncodedForm(data, options) { + return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({ + visitor: function visitor(value, key, path, helpers) { + if (platform.isNode && utils$1.isBuffer(value)) { + this.append(key, value.toString('base64')); + return false; + } + return helpers.defaultVisitor.apply(this, arguments); + } + }, options)); + } + + /** + * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z'] + * + * @param {string} name - The name of the property to get. + * + * @returns An array of strings. + */ + function parsePropPath(name) { + // foo[x][y][z] + // foo.x.y.z + // foo-x-y-z + // foo x y z + return utils$1.matchAll(/\w+|\[(\w*)]/g, name).map(function (match) { + return match[0] === '[]' ? '' : match[1] || match[0]; + }); + } + + /** + * Convert an array to an object. + * + * @param {Array} arr - The array to convert to an object. + * + * @returns An object with the same keys and values as the array. + */ + function arrayToObject(arr) { + var obj = {}; + var keys = Object.keys(arr); + var i; + var len = keys.length; + var key; + for (i = 0; i < len; i++) { + key = keys[i]; + obj[key] = arr[key]; + } + return obj; + } + + /** + * It takes a FormData object and returns a JavaScript object + * + * @param {string} formData The FormData object to convert to JSON. + * + * @returns {Object | null} The converted object. + */ + function formDataToJSON(formData) { + function buildPath(path, value, target, index) { + var name = path[index++]; + if (name === '__proto__') return true; + var isNumericKey = Number.isFinite(+name); + var isLast = index >= path.length; + name = !name && utils$1.isArray(target) ? target.length : name; + if (isLast) { + if (utils$1.hasOwnProp(target, name)) { + target[name] = [target[name], value]; + } else { + target[name] = value; + } + return !isNumericKey; + } + if (!target[name] || !utils$1.isObject(target[name])) { + target[name] = []; + } + var result = buildPath(path, value, target[name], index); + if (result && utils$1.isArray(target[name])) { + target[name] = arrayToObject(target[name]); + } + return !isNumericKey; + } + if (utils$1.isFormData(formData) && utils$1.isFunction(formData.entries)) { + var obj = {}; + utils$1.forEachEntry(formData, function (name, value) { + buildPath(parsePropPath(name), value, obj, 0); + }); + return obj; + } + return null; + } + + /** + * It takes a string, tries to parse it, and if it fails, it returns the stringified version + * of the input + * + * @param {any} rawValue - The value to be stringified. + * @param {Function} parser - A function that parses a string into a JavaScript object. + * @param {Function} encoder - A function that takes a value and returns a string. + * + * @returns {string} A stringified version of the rawValue. + */ + function stringifySafely(rawValue, parser, encoder) { + if (utils$1.isString(rawValue)) { + try { + (parser || JSON.parse)(rawValue); + return utils$1.trim(rawValue); + } catch (e) { + if (e.name !== 'SyntaxError') { + throw e; + } + } + } + return (encoder || JSON.stringify)(rawValue); + } + var defaults = { + transitional: transitionalDefaults, + adapter: ['xhr', 'http', 'fetch'], + transformRequest: [function transformRequest(data, headers) { + var contentType = headers.getContentType() || ''; + var hasJSONContentType = contentType.indexOf('application/json') > -1; + var isObjectPayload = utils$1.isObject(data); + if (isObjectPayload && utils$1.isHTMLForm(data)) { + data = new FormData(data); + } + var isFormData = utils$1.isFormData(data); + if (isFormData) { + return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data; + } + if (utils$1.isArrayBuffer(data) || utils$1.isBuffer(data) || utils$1.isStream(data) || utils$1.isFile(data) || utils$1.isBlob(data) || utils$1.isReadableStream(data)) { + return data; + } + if (utils$1.isArrayBufferView(data)) { + return data.buffer; + } + if (utils$1.isURLSearchParams(data)) { + headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false); + return data.toString(); + } + var isFileList; + if (isObjectPayload) { + if (contentType.indexOf('application/x-www-form-urlencoded') > -1) { + return toURLEncodedForm(data, this.formSerializer).toString(); + } + if ((isFileList = utils$1.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) { + var _FormData = this.env && this.env.FormData; + return toFormData(isFileList ? { + 'files[]': data + } : data, _FormData && new _FormData(), this.formSerializer); + } + } + if (isObjectPayload || hasJSONContentType) { + headers.setContentType('application/json', false); + return stringifySafely(data); + } + return data; + }], + transformResponse: [function transformResponse(data) { + var transitional = this.transitional || defaults.transitional; + var forcedJSONParsing = transitional && transitional.forcedJSONParsing; + var JSONRequested = this.responseType === 'json'; + if (utils$1.isResponse(data) || utils$1.isReadableStream(data)) { + return data; + } + if (data && utils$1.isString(data) && (forcedJSONParsing && !this.responseType || JSONRequested)) { + var silentJSONParsing = transitional && transitional.silentJSONParsing; + var strictJSONParsing = !silentJSONParsing && JSONRequested; + try { + return JSON.parse(data); + } catch (e) { + if (strictJSONParsing) { + if (e.name === 'SyntaxError') { + throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response); + } + throw e; + } + } + } + return data; + }], + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + maxContentLength: -1, + maxBodyLength: -1, + env: { + FormData: platform.classes.FormData, + Blob: platform.classes.Blob + }, + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + }, + headers: { + common: { + 'Accept': 'application/json, text/plain, */*', + 'Content-Type': undefined + } + } + }; + utils$1.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], function (method) { + defaults.headers[method] = {}; + }); + var defaults$1 = defaults; + + // RawAxiosHeaders whose duplicates are ignored by node + // c.f. https://nodejs.org/api/http.html#http_message_headers + var ignoreDuplicateOf = utils$1.toObjectSet(['age', 'authorization', 'content-length', 'content-type', 'etag', 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', 'last-modified', 'location', 'max-forwards', 'proxy-authorization', 'referer', 'retry-after', 'user-agent']); + + /** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} rawHeaders Headers needing to be parsed + * + * @returns {Object} Headers parsed into an object + */ + var parseHeaders = (function (rawHeaders) { + var parsed = {}; + var key; + var val; + var i; + rawHeaders && rawHeaders.split('\n').forEach(function parser(line) { + i = line.indexOf(':'); + key = line.substring(0, i).trim().toLowerCase(); + val = line.substring(i + 1).trim(); + if (!key || parsed[key] && ignoreDuplicateOf[key]) { + return; + } + if (key === 'set-cookie') { + if (parsed[key]) { + parsed[key].push(val); + } else { + parsed[key] = [val]; + } + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + }); + return parsed; + }); + + var $internals = Symbol('internals'); + function normalizeHeader(header) { + return header && String(header).trim().toLowerCase(); + } + function normalizeValue(value) { + if (value === false || value == null) { + return value; + } + return utils$1.isArray(value) ? value.map(normalizeValue) : String(value); + } + function parseTokens(str) { + var tokens = Object.create(null); + var tokensRE = /([^\s,;=]+)\s*(?:=\s*([^,;]+))?/g; + var match; + while (match = tokensRE.exec(str)) { + tokens[match[1]] = match[2]; + } + return tokens; + } + var isValidHeaderName = function isValidHeaderName(str) { + return /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim()); + }; + function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) { + if (utils$1.isFunction(filter)) { + return filter.call(this, value, header); + } + if (isHeaderNameFilter) { + value = header; + } + if (!utils$1.isString(value)) return; + if (utils$1.isString(filter)) { + return value.indexOf(filter) !== -1; + } + if (utils$1.isRegExp(filter)) { + return filter.test(value); + } + } + function formatHeader(header) { + return header.trim().toLowerCase().replace(/([a-z\d])(\w*)/g, function (w, _char, str) { + return _char.toUpperCase() + str; + }); + } + function buildAccessors(obj, header) { + var accessorName = utils$1.toCamelCase(' ' + header); + ['get', 'set', 'has'].forEach(function (methodName) { + Object.defineProperty(obj, methodName + accessorName, { + value: function value(arg1, arg2, arg3) { + return this[methodName].call(this, header, arg1, arg2, arg3); + }, + configurable: true + }); + }); + } + var AxiosHeaders = /*#__PURE__*/function (_Symbol$iterator, _Symbol$toStringTag) { + function AxiosHeaders(headers) { + _classCallCheck(this, AxiosHeaders); + headers && this.set(headers); + } + _createClass(AxiosHeaders, [{ + key: "set", + value: function set(header, valueOrRewrite, rewrite) { + var self = this; + function setHeader(_value, _header, _rewrite) { + var lHeader = normalizeHeader(_header); + if (!lHeader) { + throw new Error('header name must be a non-empty string'); + } + var key = utils$1.findKey(self, lHeader); + if (!key || self[key] === undefined || _rewrite === true || _rewrite === undefined && self[key] !== false) { + self[key || _header] = normalizeValue(_value); + } + } + var setHeaders = function setHeaders(headers, _rewrite) { + return utils$1.forEach(headers, function (_value, _header) { + return setHeader(_value, _header, _rewrite); + }); + }; + if (utils$1.isPlainObject(header) || header instanceof this.constructor) { + setHeaders(header, valueOrRewrite); + } else if (utils$1.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) { + setHeaders(parseHeaders(header), valueOrRewrite); + } else if (utils$1.isObject(header) && utils$1.isIterable(header)) { + var obj = {}, + dest, + key; + var _iterator = _createForOfIteratorHelper(header), + _step; + try { + for (_iterator.s(); !(_step = _iterator.n()).done;) { + var entry = _step.value; + if (!utils$1.isArray(entry)) { + throw TypeError('Object iterator must return a key-value pair'); + } + obj[key = entry[0]] = (dest = obj[key]) ? utils$1.isArray(dest) ? [].concat(_toConsumableArray(dest), [entry[1]]) : [dest, entry[1]] : entry[1]; + } + } catch (err) { + _iterator.e(err); + } finally { + _iterator.f(); + } + setHeaders(obj, valueOrRewrite); + } else { + header != null && setHeader(valueOrRewrite, header, rewrite); + } + return this; + } + }, { + key: "get", + value: function get(header, parser) { + header = normalizeHeader(header); + if (header) { + var key = utils$1.findKey(this, header); + if (key) { + var value = this[key]; + if (!parser) { + return value; + } + if (parser === true) { + return parseTokens(value); + } + if (utils$1.isFunction(parser)) { + return parser.call(this, value, key); + } + if (utils$1.isRegExp(parser)) { + return parser.exec(value); + } + throw new TypeError('parser must be boolean|regexp|function'); + } + } + } + }, { + key: "has", + value: function has(header, matcher) { + header = normalizeHeader(header); + if (header) { + var key = utils$1.findKey(this, header); + return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher))); + } + return false; + } + }, { + key: "delete", + value: function _delete(header, matcher) { + var self = this; + var deleted = false; + function deleteHeader(_header) { + _header = normalizeHeader(_header); + if (_header) { + var key = utils$1.findKey(self, _header); + if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) { + delete self[key]; + deleted = true; + } + } + } + if (utils$1.isArray(header)) { + header.forEach(deleteHeader); + } else { + deleteHeader(header); + } + return deleted; + } + }, { + key: "clear", + value: function clear(matcher) { + var keys = Object.keys(this); + var i = keys.length; + var deleted = false; + while (i--) { + var key = keys[i]; + if (!matcher || matchHeaderValue(this, this[key], key, matcher, true)) { + delete this[key]; + deleted = true; + } + } + return deleted; + } + }, { + key: "normalize", + value: function normalize(format) { + var self = this; + var headers = {}; + utils$1.forEach(this, function (value, header) { + var key = utils$1.findKey(headers, header); + if (key) { + self[key] = normalizeValue(value); + delete self[header]; + return; + } + var normalized = format ? formatHeader(header) : String(header).trim(); + if (normalized !== header) { + delete self[header]; + } + self[normalized] = normalizeValue(value); + headers[normalized] = true; + }); + return this; + } + }, { + key: "concat", + value: function concat() { + var _this$constructor; + for (var _len = arguments.length, targets = new Array(_len), _key = 0; _key < _len; _key++) { + targets[_key] = arguments[_key]; + } + return (_this$constructor = this.constructor).concat.apply(_this$constructor, [this].concat(targets)); + } + }, { + key: "toJSON", + value: function toJSON(asStrings) { + var obj = Object.create(null); + utils$1.forEach(this, function (value, header) { + value != null && value !== false && (obj[header] = asStrings && utils$1.isArray(value) ? value.join(', ') : value); + }); + return obj; + } + }, { + key: _Symbol$iterator, + value: function value() { + return Object.entries(this.toJSON())[Symbol.iterator](); + } + }, { + key: "toString", + value: function toString() { + return Object.entries(this.toJSON()).map(function (_ref) { + var _ref2 = _slicedToArray(_ref, 2), + header = _ref2[0], + value = _ref2[1]; + return header + ': ' + value; + }).join('\n'); + } + }, { + key: "getSetCookie", + value: function getSetCookie() { + return this.get("set-cookie") || []; + } + }, { + key: _Symbol$toStringTag, + get: function get() { + return 'AxiosHeaders'; + } + }], [{ + key: "from", + value: function from(thing) { + return thing instanceof this ? thing : new this(thing); + } + }, { + key: "concat", + value: function concat(first) { + var computed = new this(first); + for (var _len2 = arguments.length, targets = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + targets[_key2 - 1] = arguments[_key2]; + } + targets.forEach(function (target) { + return computed.set(target); + }); + return computed; + } + }, { + key: "accessor", + value: function accessor(header) { + var internals = this[$internals] = this[$internals] = { + accessors: {} + }; + var accessors = internals.accessors; + var prototype = this.prototype; + function defineAccessor(_header) { + var lHeader = normalizeHeader(_header); + if (!accessors[lHeader]) { + buildAccessors(prototype, _header); + accessors[lHeader] = true; + } + } + utils$1.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header); + return this; + } + }]); + return AxiosHeaders; + }(Symbol.iterator, Symbol.toStringTag); + AxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']); + + // reserved names hotfix + utils$1.reduceDescriptors(AxiosHeaders.prototype, function (_ref3, key) { + var value = _ref3.value; + var mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set` + return { + get: function get() { + return value; + }, + set: function set(headerValue) { + this[mapped] = headerValue; + } + }; + }); + utils$1.freezeMethods(AxiosHeaders); + var AxiosHeaders$1 = AxiosHeaders; + + /** + * Transform the data for a request or a response + * + * @param {Array|Function} fns A single function or Array of functions + * @param {?Object} response The response object + * + * @returns {*} The resulting transformed data + */ + function transformData(fns, response) { + var config = this || defaults$1; + var context = response || config; + var headers = AxiosHeaders$1.from(context.headers); + var data = context.data; + utils$1.forEach(fns, function transform(fn) { + data = fn.call(config, data, headers.normalize(), response ? response.status : undefined); + }); + headers.normalize(); + return data; + } + + function isCancel(value) { + return !!(value && value.__CANCEL__); + } + + /** + * A `CanceledError` is an object that is thrown when an operation is canceled. + * + * @param {string=} message The message. + * @param {Object=} config The config. + * @param {Object=} request The request. + * + * @returns {CanceledError} The created error. + */ + function CanceledError(message, config, request) { + // eslint-disable-next-line no-eq-null,eqeqeq + AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request); + this.name = 'CanceledError'; + } + utils$1.inherits(CanceledError, AxiosError, { + __CANCEL__: true + }); + + /** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + * + * @returns {object} The response. + */ + function settle(resolve, reject, response) { + var validateStatus = response.config.validateStatus; + if (!response.status || !validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(new AxiosError('Request failed with status code ' + response.status, [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4], response.config, response.request, response)); + } + } + + function parseProtocol(url) { + var match = /^([-+\w]{1,25})(:?\/\/|:)/.exec(url); + return match && match[1] || ''; + } + + /** + * Calculate data maxRate + * @param {Number} [samplesCount= 10] + * @param {Number} [min= 1000] + * @returns {Function} + */ + function speedometer(samplesCount, min) { + samplesCount = samplesCount || 10; + var bytes = new Array(samplesCount); + var timestamps = new Array(samplesCount); + var head = 0; + var tail = 0; + var firstSampleTS; + min = min !== undefined ? min : 1000; + return function push(chunkLength) { + var now = Date.now(); + var startedAt = timestamps[tail]; + if (!firstSampleTS) { + firstSampleTS = now; + } + bytes[head] = chunkLength; + timestamps[head] = now; + var i = tail; + var bytesCount = 0; + while (i !== head) { + bytesCount += bytes[i++]; + i = i % samplesCount; + } + head = (head + 1) % samplesCount; + if (head === tail) { + tail = (tail + 1) % samplesCount; + } + if (now - firstSampleTS < min) { + return; + } + var passed = startedAt && now - startedAt; + return passed ? Math.round(bytesCount * 1000 / passed) : undefined; + }; + } + + /** + * Throttle decorator + * @param {Function} fn + * @param {Number} freq + * @return {Function} + */ + function throttle(fn, freq) { + var timestamp = 0; + var threshold = 1000 / freq; + var lastArgs; + var timer; + var invoke = function invoke(args) { + var now = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Date.now(); + timestamp = now; + lastArgs = null; + if (timer) { + clearTimeout(timer); + timer = null; + } + fn.apply(null, args); + }; + var throttled = function throttled() { + var now = Date.now(); + var passed = now - timestamp; + for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + if (passed >= threshold) { + invoke(args, now); + } else { + lastArgs = args; + if (!timer) { + timer = setTimeout(function () { + timer = null; + invoke(lastArgs); + }, threshold - passed); + } + } + }; + var flush = function flush() { + return lastArgs && invoke(lastArgs); + }; + return [throttled, flush]; + } + + var progressEventReducer = function progressEventReducer(listener, isDownloadStream) { + var freq = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 3; + var bytesNotified = 0; + var _speedometer = speedometer(50, 250); + return throttle(function (e) { + var loaded = e.loaded; + var total = e.lengthComputable ? e.total : undefined; + var progressBytes = loaded - bytesNotified; + var rate = _speedometer(progressBytes); + var inRange = loaded <= total; + bytesNotified = loaded; + var data = _defineProperty({ + loaded: loaded, + total: total, + progress: total ? loaded / total : undefined, + bytes: progressBytes, + rate: rate ? rate : undefined, + estimated: rate && total && inRange ? (total - loaded) / rate : undefined, + event: e, + lengthComputable: total != null + }, isDownloadStream ? 'download' : 'upload', true); + listener(data); + }, freq); + }; + var progressEventDecorator = function progressEventDecorator(total, throttled) { + var lengthComputable = total != null; + return [function (loaded) { + return throttled[0]({ + lengthComputable: lengthComputable, + total: total, + loaded: loaded + }); + }, throttled[1]]; + }; + var asyncDecorator = function asyncDecorator(fn) { + return function () { + for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + return utils$1.asap(function () { + return fn.apply(void 0, args); + }); + }; + }; + + var isURLSameOrigin = platform.hasStandardBrowserEnv ? function (origin, isMSIE) { + return function (url) { + url = new URL(url, platform.origin); + return origin.protocol === url.protocol && origin.host === url.host && (isMSIE || origin.port === url.port); + }; + }(new URL(platform.origin), platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)) : function () { + return true; + }; + + var cookies = platform.hasStandardBrowserEnv ? + // Standard browser envs support document.cookie + { + write: function write(name, value, expires, path, domain, secure) { + var cookie = [name + '=' + encodeURIComponent(value)]; + utils$1.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString()); + utils$1.isString(path) && cookie.push('path=' + path); + utils$1.isString(domain) && cookie.push('domain=' + domain); + secure === true && cookie.push('secure'); + document.cookie = cookie.join('; '); + }, + read: function read(name) { + var match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return match ? decodeURIComponent(match[3]) : null; + }, + remove: function remove(name) { + this.write(name, '', Date.now() - 86400000); + } + } : + // Non-standard browser env (web workers, react-native) lack needed support. + { + write: function write() {}, + read: function read() { + return null; + }, + remove: function remove() {} + }; + + /** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ + function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url); + } + + /** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * + * @returns {string} The combined URL + */ + function combineURLs(baseURL, relativeURL) { + return relativeURL ? baseURL.replace(/\/?\/$/, '') + '/' + relativeURL.replace(/^\/+/, '') : baseURL; + } + + /** + * Creates a new URL by combining the baseURL with the requestedURL, + * only when the requestedURL is not already an absolute URL. + * If the requestURL is absolute, this function returns the requestedURL untouched. + * + * @param {string} baseURL The base URL + * @param {string} requestedURL Absolute or relative URL to combine + * + * @returns {string} The combined full path + */ + function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) { + var isRelativeUrl = !isAbsoluteURL(requestedURL); + if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) { + return combineURLs(baseURL, requestedURL); + } + return requestedURL; + } + + var headersToObject = function headersToObject(thing) { + return thing instanceof AxiosHeaders$1 ? _objectSpread2({}, thing) : thing; + }; + + /** + * Config-specific merge-function which creates a new config-object + * by merging two configuration objects together. + * + * @param {Object} config1 + * @param {Object} config2 + * + * @returns {Object} New object resulting from merging config2 to config1 + */ + function mergeConfig(config1, config2) { + // eslint-disable-next-line no-param-reassign + config2 = config2 || {}; + var config = {}; + function getMergedValue(target, source, prop, caseless) { + if (utils$1.isPlainObject(target) && utils$1.isPlainObject(source)) { + return utils$1.merge.call({ + caseless: caseless + }, target, source); + } else if (utils$1.isPlainObject(source)) { + return utils$1.merge({}, source); + } else if (utils$1.isArray(source)) { + return source.slice(); + } + return source; + } + + // eslint-disable-next-line consistent-return + function mergeDeepProperties(a, b, prop, caseless) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(a, b, prop, caseless); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a, prop, caseless); + } + } + + // eslint-disable-next-line consistent-return + function valueFromConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } + } + + // eslint-disable-next-line consistent-return + function defaultToConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a); + } + } + + // eslint-disable-next-line consistent-return + function mergeDirectKeys(a, b, prop) { + if (prop in config2) { + return getMergedValue(a, b); + } else if (prop in config1) { + return getMergedValue(undefined, a); + } + } + var mergeMap = { + url: valueFromConfig2, + method: valueFromConfig2, + data: valueFromConfig2, + baseURL: defaultToConfig2, + transformRequest: defaultToConfig2, + transformResponse: defaultToConfig2, + paramsSerializer: defaultToConfig2, + timeout: defaultToConfig2, + timeoutMessage: defaultToConfig2, + withCredentials: defaultToConfig2, + withXSRFToken: defaultToConfig2, + adapter: defaultToConfig2, + responseType: defaultToConfig2, + xsrfCookieName: defaultToConfig2, + xsrfHeaderName: defaultToConfig2, + onUploadProgress: defaultToConfig2, + onDownloadProgress: defaultToConfig2, + decompress: defaultToConfig2, + maxContentLength: defaultToConfig2, + maxBodyLength: defaultToConfig2, + beforeRedirect: defaultToConfig2, + transport: defaultToConfig2, + httpAgent: defaultToConfig2, + httpsAgent: defaultToConfig2, + cancelToken: defaultToConfig2, + socketPath: defaultToConfig2, + responseEncoding: defaultToConfig2, + validateStatus: mergeDirectKeys, + headers: function headers(a, b, prop) { + return mergeDeepProperties(headersToObject(a), headersToObject(b), prop, true); + } + }; + utils$1.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) { + var merge = mergeMap[prop] || mergeDeepProperties; + var configValue = merge(config1[prop], config2[prop], prop); + utils$1.isUndefined(configValue) && merge !== mergeDirectKeys || (config[prop] = configValue); + }); + return config; + } + + var resolveConfig = (function (config) { + var newConfig = mergeConfig({}, config); + var data = newConfig.data, + withXSRFToken = newConfig.withXSRFToken, + xsrfHeaderName = newConfig.xsrfHeaderName, + xsrfCookieName = newConfig.xsrfCookieName, + headers = newConfig.headers, + auth = newConfig.auth; + newConfig.headers = headers = AxiosHeaders$1.from(headers); + newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer); + + // HTTP basic authentication + if (auth) { + headers.set('Authorization', 'Basic ' + btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))); + } + var contentType; + if (utils$1.isFormData(data)) { + if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) { + headers.setContentType(undefined); // Let the browser set it + } else if ((contentType = headers.getContentType()) !== false) { + // fix semicolon duplication issue for ReactNative FormData implementation + var _ref = contentType ? contentType.split(';').map(function (token) { + return token.trim(); + }).filter(Boolean) : [], + _ref2 = _toArray(_ref), + type = _ref2[0], + tokens = _ref2.slice(1); + headers.setContentType([type || 'multipart/form-data'].concat(_toConsumableArray(tokens)).join('; ')); + } + } + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + + if (platform.hasStandardBrowserEnv) { + withXSRFToken && utils$1.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig)); + if (withXSRFToken || withXSRFToken !== false && isURLSameOrigin(newConfig.url)) { + // Add xsrf header + var xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName); + if (xsrfValue) { + headers.set(xsrfHeaderName, xsrfValue); + } + } + } + return newConfig; + }); + + var isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined'; + var xhrAdapter = isXHRAdapterSupported && function (config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + var _config = resolveConfig(config); + var requestData = _config.data; + var requestHeaders = AxiosHeaders$1.from(_config.headers).normalize(); + var responseType = _config.responseType, + onUploadProgress = _config.onUploadProgress, + onDownloadProgress = _config.onDownloadProgress; + var onCanceled; + var uploadThrottled, downloadThrottled; + var flushUpload, flushDownload; + function done() { + flushUpload && flushUpload(); // flush events + flushDownload && flushDownload(); // flush events + + _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled); + _config.signal && _config.signal.removeEventListener('abort', onCanceled); + } + var request = new XMLHttpRequest(); + request.open(_config.method.toUpperCase(), _config.url, true); + + // Set the request timeout in MS + request.timeout = _config.timeout; + function onloadend() { + if (!request) { + return; + } + // Prepare the response + var responseHeaders = AxiosHeaders$1.from('getAllResponseHeaders' in request && request.getAllResponseHeaders()); + var responseData = !responseType || responseType === 'text' || responseType === 'json' ? request.responseText : request.response; + var response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config: config, + request: request + }; + settle(function _resolve(value) { + resolve(value); + done(); + }, function _reject(err) { + reject(err); + done(); + }, response); + + // Clean up request + request = null; + } + if ('onloadend' in request) { + // Use onloadend if available + request.onloadend = onloadend; + } else { + // Listen for ready state to emulate onloadend + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + // readystate handler is calling before onerror or ontimeout handlers, + // so we should call onloadend on the next 'tick' + setTimeout(onloadend); + }; + } + + // Handle browser request cancellation (as opposed to a manual cancellation) + request.onabort = function handleAbort() { + if (!request) { + return; + } + reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request)); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + var timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded'; + var transitional = _config.transitional || transitionalDefaults; + if (_config.timeoutErrorMessage) { + timeoutErrorMessage = _config.timeoutErrorMessage; + } + reject(new AxiosError(timeoutErrorMessage, transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, config, request)); + + // Clean up request + request = null; + }; + + // Remove Content-Type if data is undefined + requestData === undefined && requestHeaders.setContentType(null); + + // Add headers to the request + if ('setRequestHeader' in request) { + utils$1.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) { + request.setRequestHeader(key, val); + }); + } + + // Add withCredentials to request if needed + if (!utils$1.isUndefined(_config.withCredentials)) { + request.withCredentials = !!_config.withCredentials; + } + + // Add responseType to request if needed + if (responseType && responseType !== 'json') { + request.responseType = _config.responseType; + } + + // Handle progress if needed + if (onDownloadProgress) { + var _progressEventReducer = progressEventReducer(onDownloadProgress, true); + var _progressEventReducer2 = _slicedToArray(_progressEventReducer, 2); + downloadThrottled = _progressEventReducer2[0]; + flushDownload = _progressEventReducer2[1]; + request.addEventListener('progress', downloadThrottled); + } + + // Not all browsers support upload events + if (onUploadProgress && request.upload) { + var _progressEventReducer3 = progressEventReducer(onUploadProgress); + var _progressEventReducer4 = _slicedToArray(_progressEventReducer3, 2); + uploadThrottled = _progressEventReducer4[0]; + flushUpload = _progressEventReducer4[1]; + request.upload.addEventListener('progress', uploadThrottled); + request.upload.addEventListener('loadend', flushUpload); + } + if (_config.cancelToken || _config.signal) { + // Handle cancellation + // eslint-disable-next-line func-names + onCanceled = function onCanceled(cancel) { + if (!request) { + return; + } + reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel); + request.abort(); + request = null; + }; + _config.cancelToken && _config.cancelToken.subscribe(onCanceled); + if (_config.signal) { + _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled); + } + } + var protocol = parseProtocol(_config.url); + if (protocol && platform.protocols.indexOf(protocol) === -1) { + reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config)); + return; + } + + // Send the request + request.send(requestData || null); + }); + }; + + var composeSignals = function composeSignals(signals, timeout) { + var _signals = signals = signals ? signals.filter(Boolean) : [], + length = _signals.length; + if (timeout || length) { + var controller = new AbortController(); + var aborted; + var onabort = function onabort(reason) { + if (!aborted) { + aborted = true; + unsubscribe(); + var err = reason instanceof Error ? reason : this.reason; + controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err)); + } + }; + var timer = timeout && setTimeout(function () { + timer = null; + onabort(new AxiosError("timeout ".concat(timeout, " of ms exceeded"), AxiosError.ETIMEDOUT)); + }, timeout); + var unsubscribe = function unsubscribe() { + if (signals) { + timer && clearTimeout(timer); + timer = null; + signals.forEach(function (signal) { + signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort); + }); + signals = null; + } + }; + signals.forEach(function (signal) { + return signal.addEventListener('abort', onabort); + }); + var signal = controller.signal; + signal.unsubscribe = function () { + return utils$1.asap(unsubscribe); + }; + return signal; + } + }; + var composeSignals$1 = composeSignals; + + var streamChunk = /*#__PURE__*/_regeneratorRuntime().mark(function streamChunk(chunk, chunkSize) { + var len, pos, end; + return _regeneratorRuntime().wrap(function streamChunk$(_context) { + while (1) switch (_context.prev = _context.next) { + case 0: + len = chunk.byteLength; + if (!(!chunkSize || len < chunkSize)) { + _context.next = 5; + break; + } + _context.next = 4; + return chunk; + case 4: + return _context.abrupt("return"); + case 5: + pos = 0; + case 6: + if (!(pos < len)) { + _context.next = 13; + break; + } + end = pos + chunkSize; + _context.next = 10; + return chunk.slice(pos, end); + case 10: + pos = end; + _context.next = 6; + break; + case 13: + case "end": + return _context.stop(); + } + }, streamChunk); + }); + var readBytes = /*#__PURE__*/function () { + var _ref = _wrapAsyncGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(iterable, chunkSize) { + var _iteratorAbruptCompletion, _didIteratorError, _iteratorError, _iterator, _step, chunk; + return _regeneratorRuntime().wrap(function _callee$(_context2) { + while (1) switch (_context2.prev = _context2.next) { + case 0: + _iteratorAbruptCompletion = false; + _didIteratorError = false; + _context2.prev = 2; + _iterator = _asyncIterator(readStream(iterable)); + case 4: + _context2.next = 6; + return _awaitAsyncGenerator(_iterator.next()); + case 6: + if (!(_iteratorAbruptCompletion = !(_step = _context2.sent).done)) { + _context2.next = 12; + break; + } + chunk = _step.value; + return _context2.delegateYield(_asyncGeneratorDelegate(_asyncIterator(streamChunk(chunk, chunkSize))), "t0", 9); + case 9: + _iteratorAbruptCompletion = false; + _context2.next = 4; + break; + case 12: + _context2.next = 18; + break; + case 14: + _context2.prev = 14; + _context2.t1 = _context2["catch"](2); + _didIteratorError = true; + _iteratorError = _context2.t1; + case 18: + _context2.prev = 18; + _context2.prev = 19; + if (!(_iteratorAbruptCompletion && _iterator["return"] != null)) { + _context2.next = 23; + break; + } + _context2.next = 23; + return _awaitAsyncGenerator(_iterator["return"]()); + case 23: + _context2.prev = 23; + if (!_didIteratorError) { + _context2.next = 26; + break; + } + throw _iteratorError; + case 26: + return _context2.finish(23); + case 27: + return _context2.finish(18); + case 28: + case "end": + return _context2.stop(); + } + }, _callee, null, [[2, 14, 18, 28], [19,, 23, 27]]); + })); + return function readBytes(_x, _x2) { + return _ref.apply(this, arguments); + }; + }(); + var readStream = /*#__PURE__*/function () { + var _ref2 = _wrapAsyncGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2(stream) { + var reader, _yield$_awaitAsyncGen, done, value; + return _regeneratorRuntime().wrap(function _callee2$(_context3) { + while (1) switch (_context3.prev = _context3.next) { + case 0: + if (!stream[Symbol.asyncIterator]) { + _context3.next = 3; + break; + } + return _context3.delegateYield(_asyncGeneratorDelegate(_asyncIterator(stream)), "t0", 2); + case 2: + return _context3.abrupt("return"); + case 3: + reader = stream.getReader(); + _context3.prev = 4; + case 5: + _context3.next = 7; + return _awaitAsyncGenerator(reader.read()); + case 7: + _yield$_awaitAsyncGen = _context3.sent; + done = _yield$_awaitAsyncGen.done; + value = _yield$_awaitAsyncGen.value; + if (!done) { + _context3.next = 12; + break; + } + return _context3.abrupt("break", 16); + case 12: + _context3.next = 14; + return value; + case 14: + _context3.next = 5; + break; + case 16: + _context3.prev = 16; + _context3.next = 19; + return _awaitAsyncGenerator(reader.cancel()); + case 19: + return _context3.finish(16); + case 20: + case "end": + return _context3.stop(); + } + }, _callee2, null, [[4,, 16, 20]]); + })); + return function readStream(_x3) { + return _ref2.apply(this, arguments); + }; + }(); + var trackStream = function trackStream(stream, chunkSize, onProgress, onFinish) { + var iterator = readBytes(stream, chunkSize); + var bytes = 0; + var done; + var _onFinish = function _onFinish(e) { + if (!done) { + done = true; + onFinish && onFinish(e); + } + }; + return new ReadableStream({ + pull: function pull(controller) { + return _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee3() { + var _yield$iterator$next, _done, value, len, loadedBytes; + return _regeneratorRuntime().wrap(function _callee3$(_context4) { + while (1) switch (_context4.prev = _context4.next) { + case 0: + _context4.prev = 0; + _context4.next = 3; + return iterator.next(); + case 3: + _yield$iterator$next = _context4.sent; + _done = _yield$iterator$next.done; + value = _yield$iterator$next.value; + if (!_done) { + _context4.next = 10; + break; + } + _onFinish(); + controller.close(); + return _context4.abrupt("return"); + case 10: + len = value.byteLength; + if (onProgress) { + loadedBytes = bytes += len; + onProgress(loadedBytes); + } + controller.enqueue(new Uint8Array(value)); + _context4.next = 19; + break; + case 15: + _context4.prev = 15; + _context4.t0 = _context4["catch"](0); + _onFinish(_context4.t0); + throw _context4.t0; + case 19: + case "end": + return _context4.stop(); + } + }, _callee3, null, [[0, 15]]); + }))(); + }, + cancel: function cancel(reason) { + _onFinish(reason); + return iterator["return"](); + } + }, { + highWaterMark: 2 + }); + }; + + var isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function'; + var isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function'; + + // used only inside the fetch adapter + var encodeText = isFetchSupported && (typeof TextEncoder === 'function' ? function (encoder) { + return function (str) { + return encoder.encode(str); + }; + }(new TextEncoder()) : ( /*#__PURE__*/function () { + var _ref = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(str) { + return _regeneratorRuntime().wrap(function _callee$(_context) { + while (1) switch (_context.prev = _context.next) { + case 0: + _context.t0 = Uint8Array; + _context.next = 3; + return new Response(str).arrayBuffer(); + case 3: + _context.t1 = _context.sent; + return _context.abrupt("return", new _context.t0(_context.t1)); + case 5: + case "end": + return _context.stop(); + } + }, _callee); + })); + return function (_x) { + return _ref.apply(this, arguments); + }; + }())); + var test = function test(fn) { + try { + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; + } + return !!fn.apply(void 0, args); + } catch (e) { + return false; + } + }; + var supportsRequestStream = isReadableStreamSupported && test(function () { + var duplexAccessed = false; + var hasContentType = new Request(platform.origin, { + body: new ReadableStream(), + method: 'POST', + get duplex() { + duplexAccessed = true; + return 'half'; + } + }).headers.has('Content-Type'); + return duplexAccessed && !hasContentType; + }); + var DEFAULT_CHUNK_SIZE = 64 * 1024; + var supportsResponseStream = isReadableStreamSupported && test(function () { + return utils$1.isReadableStream(new Response('').body); + }); + var resolvers = { + stream: supportsResponseStream && function (res) { + return res.body; + } + }; + isFetchSupported && function (res) { + ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(function (type) { + !resolvers[type] && (resolvers[type] = utils$1.isFunction(res[type]) ? function (res) { + return res[type](); + } : function (_, config) { + throw new AxiosError("Response type '".concat(type, "' is not supported"), AxiosError.ERR_NOT_SUPPORT, config); + }); + }); + }(new Response()); + var getBodyLength = /*#__PURE__*/function () { + var _ref2 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2(body) { + var _request; + return _regeneratorRuntime().wrap(function _callee2$(_context2) { + while (1) switch (_context2.prev = _context2.next) { + case 0: + if (!(body == null)) { + _context2.next = 2; + break; + } + return _context2.abrupt("return", 0); + case 2: + if (!utils$1.isBlob(body)) { + _context2.next = 4; + break; + } + return _context2.abrupt("return", body.size); + case 4: + if (!utils$1.isSpecCompliantForm(body)) { + _context2.next = 9; + break; + } + _request = new Request(platform.origin, { + method: 'POST', + body: body + }); + _context2.next = 8; + return _request.arrayBuffer(); + case 8: + return _context2.abrupt("return", _context2.sent.byteLength); + case 9: + if (!(utils$1.isArrayBufferView(body) || utils$1.isArrayBuffer(body))) { + _context2.next = 11; + break; + } + return _context2.abrupt("return", body.byteLength); + case 11: + if (utils$1.isURLSearchParams(body)) { + body = body + ''; + } + if (!utils$1.isString(body)) { + _context2.next = 16; + break; + } + _context2.next = 15; + return encodeText(body); + case 15: + return _context2.abrupt("return", _context2.sent.byteLength); + case 16: + case "end": + return _context2.stop(); + } + }, _callee2); + })); + return function getBodyLength(_x2) { + return _ref2.apply(this, arguments); + }; + }(); + var resolveBodyLength = /*#__PURE__*/function () { + var _ref3 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee3(headers, body) { + var length; + return _regeneratorRuntime().wrap(function _callee3$(_context3) { + while (1) switch (_context3.prev = _context3.next) { + case 0: + length = utils$1.toFiniteNumber(headers.getContentLength()); + return _context3.abrupt("return", length == null ? getBodyLength(body) : length); + case 2: + case "end": + return _context3.stop(); + } + }, _callee3); + })); + return function resolveBodyLength(_x3, _x4) { + return _ref3.apply(this, arguments); + }; + }(); + var fetchAdapter = isFetchSupported && ( /*#__PURE__*/function () { + var _ref4 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee4(config) { + var _resolveConfig, url, method, data, signal, cancelToken, timeout, onDownloadProgress, onUploadProgress, responseType, headers, _resolveConfig$withCr, withCredentials, fetchOptions, composedSignal, request, unsubscribe, requestContentLength, _request, contentTypeHeader, _progressEventDecorat, _progressEventDecorat2, onProgress, flush, isCredentialsSupported, response, isStreamResponse, options, responseContentLength, _ref5, _ref6, _onProgress, _flush, responseData; + return _regeneratorRuntime().wrap(function _callee4$(_context4) { + while (1) switch (_context4.prev = _context4.next) { + case 0: + _resolveConfig = resolveConfig(config), url = _resolveConfig.url, method = _resolveConfig.method, data = _resolveConfig.data, signal = _resolveConfig.signal, cancelToken = _resolveConfig.cancelToken, timeout = _resolveConfig.timeout, onDownloadProgress = _resolveConfig.onDownloadProgress, onUploadProgress = _resolveConfig.onUploadProgress, responseType = _resolveConfig.responseType, headers = _resolveConfig.headers, _resolveConfig$withCr = _resolveConfig.withCredentials, withCredentials = _resolveConfig$withCr === void 0 ? 'same-origin' : _resolveConfig$withCr, fetchOptions = _resolveConfig.fetchOptions; + responseType = responseType ? (responseType + '').toLowerCase() : 'text'; + composedSignal = composeSignals$1([signal, cancelToken && cancelToken.toAbortSignal()], timeout); + unsubscribe = composedSignal && composedSignal.unsubscribe && function () { + composedSignal.unsubscribe(); + }; + _context4.prev = 4; + _context4.t0 = onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head'; + if (!_context4.t0) { + _context4.next = 11; + break; + } + _context4.next = 9; + return resolveBodyLength(headers, data); + case 9: + _context4.t1 = requestContentLength = _context4.sent; + _context4.t0 = _context4.t1 !== 0; + case 11: + if (!_context4.t0) { + _context4.next = 15; + break; + } + _request = new Request(url, { + method: 'POST', + body: data, + duplex: "half" + }); + if (utils$1.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) { + headers.setContentType(contentTypeHeader); + } + if (_request.body) { + _progressEventDecorat = progressEventDecorator(requestContentLength, progressEventReducer(asyncDecorator(onUploadProgress))), _progressEventDecorat2 = _slicedToArray(_progressEventDecorat, 2), onProgress = _progressEventDecorat2[0], flush = _progressEventDecorat2[1]; + data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush); + } + case 15: + if (!utils$1.isString(withCredentials)) { + withCredentials = withCredentials ? 'include' : 'omit'; + } + + // Cloudflare Workers throws when credentials are defined + // see https://github.com/cloudflare/workerd/issues/902 + isCredentialsSupported = "credentials" in Request.prototype; + request = new Request(url, _objectSpread2(_objectSpread2({}, fetchOptions), {}, { + signal: composedSignal, + method: method.toUpperCase(), + headers: headers.normalize().toJSON(), + body: data, + duplex: "half", + credentials: isCredentialsSupported ? withCredentials : undefined + })); + _context4.next = 20; + return fetch(request, fetchOptions); + case 20: + response = _context4.sent; + isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response'); + if (supportsResponseStream && (onDownloadProgress || isStreamResponse && unsubscribe)) { + options = {}; + ['status', 'statusText', 'headers'].forEach(function (prop) { + options[prop] = response[prop]; + }); + responseContentLength = utils$1.toFiniteNumber(response.headers.get('content-length')); + _ref5 = onDownloadProgress && progressEventDecorator(responseContentLength, progressEventReducer(asyncDecorator(onDownloadProgress), true)) || [], _ref6 = _slicedToArray(_ref5, 2), _onProgress = _ref6[0], _flush = _ref6[1]; + response = new Response(trackStream(response.body, DEFAULT_CHUNK_SIZE, _onProgress, function () { + _flush && _flush(); + unsubscribe && unsubscribe(); + }), options); + } + responseType = responseType || 'text'; + _context4.next = 26; + return resolvers[utils$1.findKey(resolvers, responseType) || 'text'](response, config); + case 26: + responseData = _context4.sent; + !isStreamResponse && unsubscribe && unsubscribe(); + _context4.next = 30; + return new Promise(function (resolve, reject) { + settle(resolve, reject, { + data: responseData, + headers: AxiosHeaders$1.from(response.headers), + status: response.status, + statusText: response.statusText, + config: config, + request: request + }); + }); + case 30: + return _context4.abrupt("return", _context4.sent); + case 33: + _context4.prev = 33; + _context4.t2 = _context4["catch"](4); + unsubscribe && unsubscribe(); + if (!(_context4.t2 && _context4.t2.name === 'TypeError' && /Load failed|fetch/i.test(_context4.t2.message))) { + _context4.next = 38; + break; + } + throw Object.assign(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request), { + cause: _context4.t2.cause || _context4.t2 + }); + case 38: + throw AxiosError.from(_context4.t2, _context4.t2 && _context4.t2.code, config, request); + case 39: + case "end": + return _context4.stop(); + } + }, _callee4, null, [[4, 33]]); + })); + return function (_x5) { + return _ref4.apply(this, arguments); + }; + }()); + + var knownAdapters = { + http: httpAdapter, + xhr: xhrAdapter, + fetch: fetchAdapter + }; + utils$1.forEach(knownAdapters, function (fn, value) { + if (fn) { + try { + Object.defineProperty(fn, 'name', { + value: value + }); + } catch (e) { + // eslint-disable-next-line no-empty + } + Object.defineProperty(fn, 'adapterName', { + value: value + }); + } + }); + var renderReason = function renderReason(reason) { + return "- ".concat(reason); + }; + var isResolvedHandle = function isResolvedHandle(adapter) { + return utils$1.isFunction(adapter) || adapter === null || adapter === false; + }; + var adapters = { + getAdapter: function getAdapter(adapters) { + adapters = utils$1.isArray(adapters) ? adapters : [adapters]; + var _adapters = adapters, + length = _adapters.length; + var nameOrAdapter; + var adapter; + var rejectedReasons = {}; + for (var i = 0; i < length; i++) { + nameOrAdapter = adapters[i]; + var id = void 0; + adapter = nameOrAdapter; + if (!isResolvedHandle(nameOrAdapter)) { + adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()]; + if (adapter === undefined) { + throw new AxiosError("Unknown adapter '".concat(id, "'")); + } + } + if (adapter) { + break; + } + rejectedReasons[id || '#' + i] = adapter; + } + if (!adapter) { + var reasons = Object.entries(rejectedReasons).map(function (_ref) { + var _ref2 = _slicedToArray(_ref, 2), + id = _ref2[0], + state = _ref2[1]; + return "adapter ".concat(id, " ") + (state === false ? 'is not supported by the environment' : 'is not available in the build'); + }); + var s = length ? reasons.length > 1 ? 'since :\n' + reasons.map(renderReason).join('\n') : ' ' + renderReason(reasons[0]) : 'as no adapter specified'; + throw new AxiosError("There is no suitable adapter to dispatch the request " + s, 'ERR_NOT_SUPPORT'); + } + return adapter; + }, + adapters: knownAdapters + }; + + /** + * Throws a `CanceledError` if cancellation has been requested. + * + * @param {Object} config The config that is to be used for the request + * + * @returns {void} + */ + function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } + if (config.signal && config.signal.aborted) { + throw new CanceledError(null, config); + } + } + + /** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * + * @returns {Promise} The Promise to be fulfilled + */ + function dispatchRequest(config) { + throwIfCancellationRequested(config); + config.headers = AxiosHeaders$1.from(config.headers); + + // Transform request data + config.data = transformData.call(config, config.transformRequest); + if (['post', 'put', 'patch'].indexOf(config.method) !== -1) { + config.headers.setContentType('application/x-www-form-urlencoded', false); + } + var adapter = adapters.getAdapter(config.adapter || defaults$1.adapter); + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData.call(config, config.transformResponse, response); + response.headers = AxiosHeaders$1.from(response.headers); + return response; + }, function onAdapterRejection(reason) { + if (!isCancel(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData.call(config, config.transformResponse, reason.response); + reason.response.headers = AxiosHeaders$1.from(reason.response.headers); + } + } + return Promise.reject(reason); + }); + } + + var VERSION = "1.10.0"; + + var validators$1 = {}; + + // eslint-disable-next-line func-names + ['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach(function (type, i) { + validators$1[type] = function validator(thing) { + return _typeof(thing) === type || 'a' + (i < 1 ? 'n ' : ' ') + type; + }; + }); + var deprecatedWarnings = {}; + + /** + * Transitional option validator + * + * @param {function|boolean?} validator - set to false if the transitional option has been removed + * @param {string?} version - deprecated version / removed since version + * @param {string?} message - some message with additional info + * + * @returns {function} + */ + validators$1.transitional = function transitional(validator, version, message) { + function formatMessage(opt, desc) { + return '[Axios v' + VERSION + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : ''); + } + + // eslint-disable-next-line func-names + return function (value, opt, opts) { + if (validator === false) { + throw new AxiosError(formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')), AxiosError.ERR_DEPRECATED); + } + if (version && !deprecatedWarnings[opt]) { + deprecatedWarnings[opt] = true; + // eslint-disable-next-line no-console + console.warn(formatMessage(opt, ' has been deprecated since v' + version + ' and will be removed in the near future')); + } + return validator ? validator(value, opt, opts) : true; + }; + }; + validators$1.spelling = function spelling(correctSpelling) { + return function (value, opt) { + // eslint-disable-next-line no-console + console.warn("".concat(opt, " is likely a misspelling of ").concat(correctSpelling)); + return true; + }; + }; + + /** + * Assert object's properties type + * + * @param {object} options + * @param {object} schema + * @param {boolean?} allowUnknown + * + * @returns {object} + */ + + function assertOptions(options, schema, allowUnknown) { + if (_typeof(options) !== 'object') { + throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE); + } + var keys = Object.keys(options); + var i = keys.length; + while (i-- > 0) { + var opt = keys[i]; + var validator = schema[opt]; + if (validator) { + var value = options[opt]; + var result = value === undefined || validator(value, opt, options); + if (result !== true) { + throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE); + } + continue; + } + if (allowUnknown !== true) { + throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION); + } + } + } + var validator = { + assertOptions: assertOptions, + validators: validators$1 + }; + + var validators = validator.validators; + + /** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + * + * @return {Axios} A new instance of Axios + */ + var Axios = /*#__PURE__*/function () { + function Axios(instanceConfig) { + _classCallCheck(this, Axios); + this.defaults = instanceConfig || {}; + this.interceptors = { + request: new InterceptorManager$1(), + response: new InterceptorManager$1() + }; + } + + /** + * Dispatch a request + * + * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults) + * @param {?Object} config + * + * @returns {Promise} The Promise to be fulfilled + */ + _createClass(Axios, [{ + key: "request", + value: (function () { + var _request2 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(configOrUrl, config) { + var dummy, stack; + return _regeneratorRuntime().wrap(function _callee$(_context) { + while (1) switch (_context.prev = _context.next) { + case 0: + _context.prev = 0; + _context.next = 3; + return this._request(configOrUrl, config); + case 3: + return _context.abrupt("return", _context.sent); + case 6: + _context.prev = 6; + _context.t0 = _context["catch"](0); + if (_context.t0 instanceof Error) { + dummy = {}; + Error.captureStackTrace ? Error.captureStackTrace(dummy) : dummy = new Error(); + + // slice off the Error: ... line + stack = dummy.stack ? dummy.stack.replace(/^.+\n/, '') : ''; + try { + if (!_context.t0.stack) { + _context.t0.stack = stack; + // match without the 2 top stack lines + } else if (stack && !String(_context.t0.stack).endsWith(stack.replace(/^.+\n.+\n/, ''))) { + _context.t0.stack += '\n' + stack; + } + } catch (e) { + // ignore the case where "stack" is an un-writable property + } + } + throw _context.t0; + case 10: + case "end": + return _context.stop(); + } + }, _callee, this, [[0, 6]]); + })); + function request(_x, _x2) { + return _request2.apply(this, arguments); + } + return request; + }()) + }, { + key: "_request", + value: function _request(configOrUrl, config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof configOrUrl === 'string') { + config = config || {}; + config.url = configOrUrl; + } else { + config = configOrUrl || {}; + } + config = mergeConfig(this.defaults, config); + var _config = config, + transitional = _config.transitional, + paramsSerializer = _config.paramsSerializer, + headers = _config.headers; + if (transitional !== undefined) { + validator.assertOptions(transitional, { + silentJSONParsing: validators.transitional(validators["boolean"]), + forcedJSONParsing: validators.transitional(validators["boolean"]), + clarifyTimeoutError: validators.transitional(validators["boolean"]) + }, false); + } + if (paramsSerializer != null) { + if (utils$1.isFunction(paramsSerializer)) { + config.paramsSerializer = { + serialize: paramsSerializer + }; + } else { + validator.assertOptions(paramsSerializer, { + encode: validators["function"], + serialize: validators["function"] + }, true); + } + } + + // Set config.allowAbsoluteUrls + if (config.allowAbsoluteUrls !== undefined) ; else if (this.defaults.allowAbsoluteUrls !== undefined) { + config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls; + } else { + config.allowAbsoluteUrls = true; + } + validator.assertOptions(config, { + baseUrl: validators.spelling('baseURL'), + withXsrfToken: validators.spelling('withXSRFToken') + }, true); + + // Set config.method + config.method = (config.method || this.defaults.method || 'get').toLowerCase(); + + // Flatten headers + var contextHeaders = headers && utils$1.merge(headers.common, headers[config.method]); + headers && utils$1.forEach(['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], function (method) { + delete headers[method]; + }); + config.headers = AxiosHeaders$1.concat(contextHeaders, headers); + + // filter out skipped interceptors + var requestInterceptorChain = []; + var synchronousRequestInterceptors = true; + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) { + return; + } + synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous; + requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + var responseInterceptorChain = []; + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected); + }); + var promise; + var i = 0; + var len; + if (!synchronousRequestInterceptors) { + var chain = [dispatchRequest.bind(this), undefined]; + chain.unshift.apply(chain, requestInterceptorChain); + chain.push.apply(chain, responseInterceptorChain); + len = chain.length; + promise = Promise.resolve(config); + while (i < len) { + promise = promise.then(chain[i++], chain[i++]); + } + return promise; + } + len = requestInterceptorChain.length; + var newConfig = config; + i = 0; + while (i < len) { + var onFulfilled = requestInterceptorChain[i++]; + var onRejected = requestInterceptorChain[i++]; + try { + newConfig = onFulfilled(newConfig); + } catch (error) { + onRejected.call(this, error); + break; + } + } + try { + promise = dispatchRequest.call(this, newConfig); + } catch (error) { + return Promise.reject(error); + } + i = 0; + len = responseInterceptorChain.length; + while (i < len) { + promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]); + } + return promise; + } + }, { + key: "getUri", + value: function getUri(config) { + config = mergeConfig(this.defaults, config); + var fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + return buildURL(fullPath, config.params, config.paramsSerializer); + } + }]); + return Axios; + }(); // Provide aliases for supported request methods + utils$1.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function (url, config) { + return this.request(mergeConfig(config || {}, { + method: method, + url: url, + data: (config || {}).data + })); + }; + }); + utils$1.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + + function generateHTTPMethod(isForm) { + return function httpMethod(url, data, config) { + return this.request(mergeConfig(config || {}, { + method: method, + headers: isForm ? { + 'Content-Type': 'multipart/form-data' + } : {}, + url: url, + data: data + })); + }; + } + Axios.prototype[method] = generateHTTPMethod(); + Axios.prototype[method + 'Form'] = generateHTTPMethod(true); + }); + var Axios$1 = Axios; + + /** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @param {Function} executor The executor function. + * + * @returns {CancelToken} + */ + var CancelToken = /*#__PURE__*/function () { + function CancelToken(executor) { + _classCallCheck(this, CancelToken); + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + var resolvePromise; + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + var token = this; + + // eslint-disable-next-line func-names + this.promise.then(function (cancel) { + if (!token._listeners) return; + var i = token._listeners.length; + while (i-- > 0) { + token._listeners[i](cancel); + } + token._listeners = null; + }); + + // eslint-disable-next-line func-names + this.promise.then = function (onfulfilled) { + var _resolve; + // eslint-disable-next-line func-names + var promise = new Promise(function (resolve) { + token.subscribe(resolve); + _resolve = resolve; + }).then(onfulfilled); + promise.cancel = function reject() { + token.unsubscribe(_resolve); + }; + return promise; + }; + executor(function cancel(message, config, request) { + if (token.reason) { + // Cancellation has already been requested + return; + } + token.reason = new CanceledError(message, config, request); + resolvePromise(token.reason); + }); + } + + /** + * Throws a `CanceledError` if cancellation has been requested. + */ + _createClass(CancelToken, [{ + key: "throwIfRequested", + value: function throwIfRequested() { + if (this.reason) { + throw this.reason; + } + } + + /** + * Subscribe to the cancel signal + */ + }, { + key: "subscribe", + value: function subscribe(listener) { + if (this.reason) { + listener(this.reason); + return; + } + if (this._listeners) { + this._listeners.push(listener); + } else { + this._listeners = [listener]; + } + } + + /** + * Unsubscribe from the cancel signal + */ + }, { + key: "unsubscribe", + value: function unsubscribe(listener) { + if (!this._listeners) { + return; + } + var index = this._listeners.indexOf(listener); + if (index !== -1) { + this._listeners.splice(index, 1); + } + } + }, { + key: "toAbortSignal", + value: function toAbortSignal() { + var _this = this; + var controller = new AbortController(); + var abort = function abort(err) { + controller.abort(err); + }; + this.subscribe(abort); + controller.signal.unsubscribe = function () { + return _this.unsubscribe(abort); + }; + return controller.signal; + } + + /** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ + }], [{ + key: "source", + value: function source() { + var cancel; + var token = new CancelToken(function executor(c) { + cancel = c; + }); + return { + token: token, + cancel: cancel + }; + } + }]); + return CancelToken; + }(); + var CancelToken$1 = CancelToken; + + /** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * + * @returns {Function} + */ + function spread(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; + } + + /** + * Determines whether the payload is an error thrown by Axios + * + * @param {*} payload The value to test + * + * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false + */ + function isAxiosError(payload) { + return utils$1.isObject(payload) && payload.isAxiosError === true; + } + + var HttpStatusCode = { + Continue: 100, + SwitchingProtocols: 101, + Processing: 102, + EarlyHints: 103, + Ok: 200, + Created: 201, + Accepted: 202, + NonAuthoritativeInformation: 203, + NoContent: 204, + ResetContent: 205, + PartialContent: 206, + MultiStatus: 207, + AlreadyReported: 208, + ImUsed: 226, + MultipleChoices: 300, + MovedPermanently: 301, + Found: 302, + SeeOther: 303, + NotModified: 304, + UseProxy: 305, + Unused: 306, + TemporaryRedirect: 307, + PermanentRedirect: 308, + BadRequest: 400, + Unauthorized: 401, + PaymentRequired: 402, + Forbidden: 403, + NotFound: 404, + MethodNotAllowed: 405, + NotAcceptable: 406, + ProxyAuthenticationRequired: 407, + RequestTimeout: 408, + Conflict: 409, + Gone: 410, + LengthRequired: 411, + PreconditionFailed: 412, + PayloadTooLarge: 413, + UriTooLong: 414, + UnsupportedMediaType: 415, + RangeNotSatisfiable: 416, + ExpectationFailed: 417, + ImATeapot: 418, + MisdirectedRequest: 421, + UnprocessableEntity: 422, + Locked: 423, + FailedDependency: 424, + TooEarly: 425, + UpgradeRequired: 426, + PreconditionRequired: 428, + TooManyRequests: 429, + RequestHeaderFieldsTooLarge: 431, + UnavailableForLegalReasons: 451, + InternalServerError: 500, + NotImplemented: 501, + BadGateway: 502, + ServiceUnavailable: 503, + GatewayTimeout: 504, + HttpVersionNotSupported: 505, + VariantAlsoNegotiates: 506, + InsufficientStorage: 507, + LoopDetected: 508, + NotExtended: 510, + NetworkAuthenticationRequired: 511 + }; + Object.entries(HttpStatusCode).forEach(function (_ref) { + var _ref2 = _slicedToArray(_ref, 2), + key = _ref2[0], + value = _ref2[1]; + HttpStatusCode[value] = key; + }); + var HttpStatusCode$1 = HttpStatusCode; + + /** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * + * @returns {Axios} A new instance of Axios + */ + function createInstance(defaultConfig) { + var context = new Axios$1(defaultConfig); + var instance = bind(Axios$1.prototype.request, context); + + // Copy axios.prototype to instance + utils$1.extend(instance, Axios$1.prototype, context, { + allOwnKeys: true + }); + + // Copy context to instance + utils$1.extend(instance, context, null, { + allOwnKeys: true + }); + + // Factory for creating new instances + instance.create = function create(instanceConfig) { + return createInstance(mergeConfig(defaultConfig, instanceConfig)); + }; + return instance; + } + + // Create the default instance to be exported + var axios = createInstance(defaults$1); + + // Expose Axios class to allow class inheritance + axios.Axios = Axios$1; + + // Expose Cancel & CancelToken + axios.CanceledError = CanceledError; + axios.CancelToken = CancelToken$1; + axios.isCancel = isCancel; + axios.VERSION = VERSION; + axios.toFormData = toFormData; + + // Expose AxiosError class + axios.AxiosError = AxiosError; + + // alias for CanceledError for backward compatibility + axios.Cancel = axios.CanceledError; + + // Expose all/spread + axios.all = function all(promises) { + return Promise.all(promises); + }; + axios.spread = spread; + + // Expose isAxiosError + axios.isAxiosError = isAxiosError; + + // Expose mergeConfig + axios.mergeConfig = mergeConfig; + axios.AxiosHeaders = AxiosHeaders$1; + axios.formToJSON = function (thing) { + return formDataToJSON(utils$1.isHTMLForm(thing) ? new FormData(thing) : thing); + }; + axios.getAdapter = adapters.getAdapter; + axios.HttpStatusCode = HttpStatusCode$1; + axios["default"] = axios; + + return axios; + +})); +//# sourceMappingURL=axios.js.map diff --git a/node_modules/axios/dist/axios.js.map b/node_modules/axios/dist/axios.js.map new file mode 100644 index 0000000..961ab8d --- /dev/null +++ b/node_modules/axios/dist/axios.js.map @@ -0,0 +1 @@ +{"version":3,"file":"axios.js","sources":["../lib/helpers/bind.js","../lib/utils.js","../lib/core/AxiosError.js","../lib/helpers/null.js","../lib/helpers/toFormData.js","../lib/helpers/AxiosURLSearchParams.js","../lib/helpers/buildURL.js","../lib/core/InterceptorManager.js","../lib/defaults/transitional.js","../lib/platform/browser/classes/URLSearchParams.js","../lib/platform/browser/classes/FormData.js","../lib/platform/browser/classes/Blob.js","../lib/platform/browser/index.js","../lib/platform/common/utils.js","../lib/platform/index.js","../lib/helpers/toURLEncodedForm.js","../lib/helpers/formDataToJSON.js","../lib/defaults/index.js","../lib/helpers/parseHeaders.js","../lib/core/AxiosHeaders.js","../lib/core/transformData.js","../lib/cancel/isCancel.js","../lib/cancel/CanceledError.js","../lib/core/settle.js","../lib/helpers/parseProtocol.js","../lib/helpers/speedometer.js","../lib/helpers/throttle.js","../lib/helpers/progressEventReducer.js","../lib/helpers/isURLSameOrigin.js","../lib/helpers/cookies.js","../lib/helpers/isAbsoluteURL.js","../lib/helpers/combineURLs.js","../lib/core/buildFullPath.js","../lib/core/mergeConfig.js","../lib/helpers/resolveConfig.js","../lib/adapters/xhr.js","../lib/helpers/composeSignals.js","../lib/helpers/trackStream.js","../lib/adapters/fetch.js","../lib/adapters/adapters.js","../lib/core/dispatchRequest.js","../lib/env/data.js","../lib/helpers/validator.js","../lib/core/Axios.js","../lib/cancel/CancelToken.js","../lib/helpers/spread.js","../lib/helpers/isAxiosError.js","../lib/helpers/HttpStatusCode.js","../lib/axios.js"],"sourcesContent":["'use strict';\n\nexport default function bind(fn, thisArg) {\n return function wrap() {\n return fn.apply(thisArg, arguments);\n };\n}\n","'use strict';\n\nimport bind from './helpers/bind.js';\n\n// utils is a library of generic helper functions non-specific to axios\n\nconst {toString} = Object.prototype;\nconst {getPrototypeOf} = Object;\nconst {iterator, toStringTag} = Symbol;\n\nconst kindOf = (cache => thing => {\n const str = toString.call(thing);\n return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());\n})(Object.create(null));\n\nconst kindOfTest = (type) => {\n type = type.toLowerCase();\n return (thing) => kindOf(thing) === type\n}\n\nconst typeOfTest = type => thing => typeof thing === type;\n\n/**\n * Determine if a value is an Array\n *\n * @param {Object} val The value to test\n *\n * @returns {boolean} True if value is an Array, otherwise false\n */\nconst {isArray} = Array;\n\n/**\n * Determine if a value is undefined\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) {\n result = ArrayBuffer.isView(val);\n } else {\n result = (val) && (val.buffer) && (isArrayBuffer(val.buffer));\n }\n return result;\n}\n\n/**\n * Determine if a value is a String\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a String, otherwise false\n */\nconst isString = typeOfTest('string');\n\n/**\n * Determine if a value is a Function\n *\n * @param {*} val The value to test\n * @returns {boolean} True if value is a Function, otherwise false\n */\nconst isFunction = typeOfTest('function');\n\n/**\n * Determine if a value is a Number\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Number, otherwise false\n */\nconst isNumber = typeOfTest('number');\n\n/**\n * Determine if a value is an Object\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an Object, otherwise false\n */\nconst isObject = (thing) => thing !== null && typeof thing === 'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\nconst [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest);\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[iterator];\n\n const _iterator = generator.call(obj);\n\n let result;\n\n while ((result = _iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n return value != null && Number.isFinite(value = +value) ? value : defaultValue;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\n// original code\n// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34\n\nconst _setImmediate = ((setImmediateSupported, postMessageSupported) => {\n if (setImmediateSupported) {\n return setImmediate;\n }\n\n return postMessageSupported ? ((token, callbacks) => {\n _global.addEventListener(\"message\", ({source, data}) => {\n if (source === _global && data === token) {\n callbacks.length && callbacks.shift()();\n }\n }, false);\n\n return (cb) => {\n callbacks.push(cb);\n _global.postMessage(token, \"*\");\n }\n })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb);\n})(\n typeof setImmediate === 'function',\n isFunction(_global.postMessage)\n);\n\nconst asap = typeof queueMicrotask !== 'undefined' ?\n queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate);\n\n// *********************\n\n\nconst isIterable = (thing) => thing != null && isFunction(thing[iterator]);\n\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isReadableStream,\n isRequest,\n isResponse,\n isHeaders,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable,\n setImmediate: _setImmediate,\n asap,\n isIterable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n if (response) {\n this.response = response;\n this.status = response.status ? response.status : null;\n }\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.status\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","// eslint-disable-next-line strict\nexport default null;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (utils.isBoolean(value)) {\n return value.toString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?(object|Function)} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n if (utils.isFunction(options)) {\n options = {\n serialize: options\n };\n } \n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","'use strict';\n\nimport AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';\nexport default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;\n","'use strict';\n\nexport default typeof FormData !== 'undefined' ? FormData : null;\n","'use strict'\n\nexport default typeof Blob !== 'undefined' ? Blob : null\n","import URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\nimport Blob from './classes/Blob.js'\n\nexport default {\n isBrowser: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob\n },\n protocols: ['http', 'https', 'file', 'blob', 'url', 'data']\n};\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nconst _navigator = typeof navigator === 'object' && navigator || undefined;\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = hasBrowserEnv &&\n (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nconst origin = hasBrowserEnv && window.location.href || 'http://localhost';\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv,\n _navigator as navigator,\n origin\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n\n if (name === '__proto__') return true;\n\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http', 'fetch'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data) ||\n utils.isReadableStream(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (utils.isResponse(data) || utils.isReadableStream(data)) {\n return data;\n }\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else if (utils.isObject(header) && utils.isIterable(header)) {\n let obj = {}, dest, key;\n for (const entry of header) {\n if (!utils.isArray(entry)) {\n throw TypeError('Object iterator must return a key-value pair');\n }\n\n obj[key = entry[0]] = (dest = obj[key]) ?\n (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1];\n }\n\n setHeaders(obj, valueOrRewrite)\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n getSetCookie() {\n return this.get(\"set-cookie\") || [];\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","/**\n * Throttle decorator\n * @param {Function} fn\n * @param {Number} freq\n * @return {Function}\n */\nfunction throttle(fn, freq) {\n let timestamp = 0;\n let threshold = 1000 / freq;\n let lastArgs;\n let timer;\n\n const invoke = (args, now = Date.now()) => {\n timestamp = now;\n lastArgs = null;\n if (timer) {\n clearTimeout(timer);\n timer = null;\n }\n fn.apply(null, args);\n }\n\n const throttled = (...args) => {\n const now = Date.now();\n const passed = now - timestamp;\n if ( passed >= threshold) {\n invoke(args, now);\n } else {\n lastArgs = args;\n if (!timer) {\n timer = setTimeout(() => {\n timer = null;\n invoke(lastArgs)\n }, threshold - passed);\n }\n }\n }\n\n const flush = () => lastArgs && invoke(lastArgs);\n\n return [throttled, flush];\n}\n\nexport default throttle;\n","import speedometer from \"./speedometer.js\";\nimport throttle from \"./throttle.js\";\nimport utils from \"../utils.js\";\n\nexport const progressEventReducer = (listener, isDownloadStream, freq = 3) => {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return throttle(e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e,\n lengthComputable: total != null,\n [isDownloadStream ? 'download' : 'upload']: true\n };\n\n listener(data);\n }, freq);\n}\n\nexport const progressEventDecorator = (total, throttled) => {\n const lengthComputable = total != null;\n\n return [(loaded) => throttled[0]({\n lengthComputable,\n total,\n loaded\n }), throttled[1]];\n}\n\nexport const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args));\n","import platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {\n url = new URL(url, platform.origin);\n\n return (\n origin.protocol === url.protocol &&\n origin.host === url.host &&\n (isMSIE || origin.port === url.port)\n );\n})(\n new URL(platform.origin),\n platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)\n) : () => true;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/?\\/$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {\n let isRelativeUrl = !isAbsoluteURL(requestedURL);\n if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, prop, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, prop , caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, prop , caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, prop , caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport isURLSameOrigin from \"./isURLSameOrigin.js\";\nimport cookies from \"./cookies.js\";\nimport buildFullPath from \"../core/buildFullPath.js\";\nimport mergeConfig from \"../core/mergeConfig.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport buildURL from \"./buildURL.js\";\n\nexport default (config) => {\n const newConfig = mergeConfig({}, config);\n\n let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;\n\n newConfig.headers = headers = AxiosHeaders.from(headers);\n\n newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);\n\n // HTTP basic authentication\n if (auth) {\n headers.set('Authorization', 'Basic ' +\n btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))\n );\n }\n\n let contentType;\n\n if (utils.isFormData(data)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n headers.setContentType(undefined); // Let the browser set it\n } else if ((contentType = headers.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n\n if (platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {\n // Add xsrf header\n const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);\n\n if (xsrfValue) {\n headers.set(xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n return newConfig;\n}\n\n","import utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport {progressEventReducer} from '../helpers/progressEventReducer.js';\nimport resolveConfig from \"../helpers/resolveConfig.js\";\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n const _config = resolveConfig(config);\n let requestData = _config.data;\n const requestHeaders = AxiosHeaders.from(_config.headers).normalize();\n let {responseType, onUploadProgress, onDownloadProgress} = _config;\n let onCanceled;\n let uploadThrottled, downloadThrottled;\n let flushUpload, flushDownload;\n\n function done() {\n flushUpload && flushUpload(); // flush events\n flushDownload && flushDownload(); // flush events\n\n _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);\n\n _config.signal && _config.signal.removeEventListener('abort', onCanceled);\n }\n\n let request = new XMLHttpRequest();\n\n request.open(_config.method.toUpperCase(), _config.url, true);\n\n // Set the request timeout in MS\n request.timeout = _config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = _config.transitional || transitionalDefaults;\n if (_config.timeoutErrorMessage) {\n timeoutErrorMessage = _config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(_config.withCredentials)) {\n request.withCredentials = !!_config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = _config.responseType;\n }\n\n // Handle progress if needed\n if (onDownloadProgress) {\n ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));\n request.addEventListener('progress', downloadThrottled);\n }\n\n // Not all browsers support upload events\n if (onUploadProgress && request.upload) {\n ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));\n\n request.upload.addEventListener('progress', uploadThrottled);\n\n request.upload.addEventListener('loadend', flushUpload);\n }\n\n if (_config.cancelToken || _config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n _config.cancelToken && _config.cancelToken.subscribe(onCanceled);\n if (_config.signal) {\n _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(_config.url);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","import CanceledError from \"../cancel/CanceledError.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport utils from '../utils.js';\n\nconst composeSignals = (signals, timeout) => {\n const {length} = (signals = signals ? signals.filter(Boolean) : []);\n\n if (timeout || length) {\n let controller = new AbortController();\n\n let aborted;\n\n const onabort = function (reason) {\n if (!aborted) {\n aborted = true;\n unsubscribe();\n const err = reason instanceof Error ? reason : this.reason;\n controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));\n }\n }\n\n let timer = timeout && setTimeout(() => {\n timer = null;\n onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))\n }, timeout)\n\n const unsubscribe = () => {\n if (signals) {\n timer && clearTimeout(timer);\n timer = null;\n signals.forEach(signal => {\n signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);\n });\n signals = null;\n }\n }\n\n signals.forEach((signal) => signal.addEventListener('abort', onabort));\n\n const {signal} = controller;\n\n signal.unsubscribe = () => utils.asap(unsubscribe);\n\n return signal;\n }\n}\n\nexport default composeSignals;\n","\nexport const streamChunk = function* (chunk, chunkSize) {\n let len = chunk.byteLength;\n\n if (!chunkSize || len < chunkSize) {\n yield chunk;\n return;\n }\n\n let pos = 0;\n let end;\n\n while (pos < len) {\n end = pos + chunkSize;\n yield chunk.slice(pos, end);\n pos = end;\n }\n}\n\nexport const readBytes = async function* (iterable, chunkSize) {\n for await (const chunk of readStream(iterable)) {\n yield* streamChunk(chunk, chunkSize);\n }\n}\n\nconst readStream = async function* (stream) {\n if (stream[Symbol.asyncIterator]) {\n yield* stream;\n return;\n }\n\n const reader = stream.getReader();\n try {\n for (;;) {\n const {done, value} = await reader.read();\n if (done) {\n break;\n }\n yield value;\n }\n } finally {\n await reader.cancel();\n }\n}\n\nexport const trackStream = (stream, chunkSize, onProgress, onFinish) => {\n const iterator = readBytes(stream, chunkSize);\n\n let bytes = 0;\n let done;\n let _onFinish = (e) => {\n if (!done) {\n done = true;\n onFinish && onFinish(e);\n }\n }\n\n return new ReadableStream({\n async pull(controller) {\n try {\n const {done, value} = await iterator.next();\n\n if (done) {\n _onFinish();\n controller.close();\n return;\n }\n\n let len = value.byteLength;\n if (onProgress) {\n let loadedBytes = bytes += len;\n onProgress(loadedBytes);\n }\n controller.enqueue(new Uint8Array(value));\n } catch (err) {\n _onFinish(err);\n throw err;\n }\n },\n cancel(reason) {\n _onFinish(reason);\n return iterator.return();\n }\n }, {\n highWaterMark: 2\n })\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport composeSignals from \"../helpers/composeSignals.js\";\nimport {trackStream} from \"../helpers/trackStream.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\nimport resolveConfig from \"../helpers/resolveConfig.js\";\nimport settle from \"../core/settle.js\";\n\nconst isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function';\nconst isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function';\n\n// used only inside the fetch adapter\nconst encodeText = isFetchSupported && (typeof TextEncoder === 'function' ?\n ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) :\n async (str) => new Uint8Array(await new Response(str).arrayBuffer())\n);\n\nconst test = (fn, ...args) => {\n try {\n return !!fn(...args);\n } catch (e) {\n return false\n }\n}\n\nconst supportsRequestStream = isReadableStreamSupported && test(() => {\n let duplexAccessed = false;\n\n const hasContentType = new Request(platform.origin, {\n body: new ReadableStream(),\n method: 'POST',\n get duplex() {\n duplexAccessed = true;\n return 'half';\n },\n }).headers.has('Content-Type');\n\n return duplexAccessed && !hasContentType;\n});\n\nconst DEFAULT_CHUNK_SIZE = 64 * 1024;\n\nconst supportsResponseStream = isReadableStreamSupported &&\n test(() => utils.isReadableStream(new Response('').body));\n\n\nconst resolvers = {\n stream: supportsResponseStream && ((res) => res.body)\n};\n\nisFetchSupported && (((res) => {\n ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => {\n !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() :\n (_, config) => {\n throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config);\n })\n });\n})(new Response));\n\nconst getBodyLength = async (body) => {\n if (body == null) {\n return 0;\n }\n\n if(utils.isBlob(body)) {\n return body.size;\n }\n\n if(utils.isSpecCompliantForm(body)) {\n const _request = new Request(platform.origin, {\n method: 'POST',\n body,\n });\n return (await _request.arrayBuffer()).byteLength;\n }\n\n if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) {\n return body.byteLength;\n }\n\n if(utils.isURLSearchParams(body)) {\n body = body + '';\n }\n\n if(utils.isString(body)) {\n return (await encodeText(body)).byteLength;\n }\n}\n\nconst resolveBodyLength = async (headers, body) => {\n const length = utils.toFiniteNumber(headers.getContentLength());\n\n return length == null ? getBodyLength(body) : length;\n}\n\nexport default isFetchSupported && (async (config) => {\n let {\n url,\n method,\n data,\n signal,\n cancelToken,\n timeout,\n onDownloadProgress,\n onUploadProgress,\n responseType,\n headers,\n withCredentials = 'same-origin',\n fetchOptions\n } = resolveConfig(config);\n\n responseType = responseType ? (responseType + '').toLowerCase() : 'text';\n\n let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout);\n\n let request;\n\n const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => {\n composedSignal.unsubscribe();\n });\n\n let requestContentLength;\n\n try {\n if (\n onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' &&\n (requestContentLength = await resolveBodyLength(headers, data)) !== 0\n ) {\n let _request = new Request(url, {\n method: 'POST',\n body: data,\n duplex: \"half\"\n });\n\n let contentTypeHeader;\n\n if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) {\n headers.setContentType(contentTypeHeader)\n }\n\n if (_request.body) {\n const [onProgress, flush] = progressEventDecorator(\n requestContentLength,\n progressEventReducer(asyncDecorator(onUploadProgress))\n );\n\n data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush);\n }\n }\n\n if (!utils.isString(withCredentials)) {\n withCredentials = withCredentials ? 'include' : 'omit';\n }\n\n // Cloudflare Workers throws when credentials are defined\n // see https://github.com/cloudflare/workerd/issues/902\n const isCredentialsSupported = \"credentials\" in Request.prototype;\n request = new Request(url, {\n ...fetchOptions,\n signal: composedSignal,\n method: method.toUpperCase(),\n headers: headers.normalize().toJSON(),\n body: data,\n duplex: \"half\",\n credentials: isCredentialsSupported ? withCredentials : undefined\n });\n\n let response = await fetch(request, fetchOptions);\n\n const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response');\n\n if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) {\n const options = {};\n\n ['status', 'statusText', 'headers'].forEach(prop => {\n options[prop] = response[prop];\n });\n\n const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length'));\n\n const [onProgress, flush] = onDownloadProgress && progressEventDecorator(\n responseContentLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true)\n ) || [];\n\n response = new Response(\n trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => {\n flush && flush();\n unsubscribe && unsubscribe();\n }),\n options\n );\n }\n\n responseType = responseType || 'text';\n\n let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config);\n\n !isStreamResponse && unsubscribe && unsubscribe();\n\n return await new Promise((resolve, reject) => {\n settle(resolve, reject, {\n data: responseData,\n headers: AxiosHeaders.from(response.headers),\n status: response.status,\n statusText: response.statusText,\n config,\n request\n })\n })\n } catch (err) {\n unsubscribe && unsubscribe();\n\n if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) {\n throw Object.assign(\n new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request),\n {\n cause: err.cause || err\n }\n )\n }\n\n throw AxiosError.from(err, err && err.code, config, request);\n }\n});\n\n\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport fetchAdapter from './fetch.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter,\n fetch: fetchAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","export const VERSION = \"1.10.0\";","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\nvalidators.spelling = function spelling(correctSpelling) {\n return (value, opt) => {\n // eslint-disable-next-line no-console\n console.warn(`${opt} is likely a misspelling of ${correctSpelling}`);\n return true;\n }\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig || {};\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n async request(configOrUrl, config) {\n try {\n return await this._request(configOrUrl, config);\n } catch (err) {\n if (err instanceof Error) {\n let dummy = {};\n\n Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error());\n\n // slice off the Error: ... line\n const stack = dummy.stack ? dummy.stack.replace(/^.+\\n/, '') : '';\n try {\n if (!err.stack) {\n err.stack = stack;\n // match without the 2 top stack lines\n } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\\n.+\\n/, ''))) {\n err.stack += '\\n' + stack\n }\n } catch (e) {\n // ignore the case where \"stack\" is an un-writable property\n }\n }\n\n throw err;\n }\n }\n\n _request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.allowAbsoluteUrls\n if (config.allowAbsoluteUrls !== undefined) {\n // do nothing\n } else if (this.defaults.allowAbsoluteUrls !== undefined) {\n config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls;\n } else {\n config.allowAbsoluteUrls = true;\n }\n\n validator.assertOptions(config, {\n baseUrl: validators.spelling('baseURL'),\n withXsrfToken: validators.spelling('withXSRFToken')\n }, true);\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n toAbortSignal() {\n const controller = new AbortController();\n\n const abort = (err) => {\n controller.abort(err);\n };\n\n this.subscribe(abort);\n\n controller.signal.unsubscribe = () => this.unsubscribe(abort);\n\n return controller.signal;\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","'use strict';\n\n/**\n * Syntactic sugar for invoking a function and expanding an array for arguments.\n *\n * Common use case would be to use `Function.prototype.apply`.\n *\n * ```js\n * function f(x, y, z) {}\n * var args = [1, 2, 3];\n * f.apply(null, args);\n * ```\n *\n * With `spread` this example can be re-written.\n *\n * ```js\n * spread(function(x, y, z) {})([1, 2, 3]);\n * ```\n *\n * @param {Function} callback\n *\n * @returns {Function}\n */\nexport default function spread(callback) {\n return function wrap(arr) {\n return callback.apply(null, arr);\n };\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n/**\n * Determines whether the payload is an error thrown by Axios\n *\n * @param {*} payload The value to test\n *\n * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false\n */\nexport default function isAxiosError(payload) {\n return utils.isObject(payload) && (payload.isAxiosError === true);\n}\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n 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*\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') 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'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\nconst [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest);\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[iterator];\n\n const _iterator = generator.call(obj);\n\n let result;\n\n while ((result = _iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n return value != null && Number.isFinite(value = +value) ? value : defaultValue;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\n// original code\n// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34\n\nconst _setImmediate = ((setImmediateSupported, postMessageSupported) => {\n if (setImmediateSupported) {\n return setImmediate;\n }\n\n return postMessageSupported ? ((token, callbacks) => {\n _global.addEventListener(\"message\", ({source, data}) => {\n if (source === _global && data === token) {\n callbacks.length && callbacks.shift()();\n }\n }, false);\n\n return (cb) => {\n callbacks.push(cb);\n _global.postMessage(token, \"*\");\n }\n })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb);\n})(\n typeof setImmediate === 'function',\n isFunction(_global.postMessage)\n);\n\nconst asap = typeof queueMicrotask !== 'undefined' ?\n queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate);\n\n// *********************\n\n\nconst isIterable = (thing) => thing != null && isFunction(thing[iterator]);\n\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isReadableStream,\n isRequest,\n isResponse,\n isHeaders,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable,\n setImmediate: _setImmediate,\n asap,\n isIterable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n if (response) {\n this.response = response;\n this.status = response.status ? response.status : null;\n }\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.status\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (utils.isBoolean(value)) {\n return value.toString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?(object|Function)} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n if (utils.isFunction(options)) {\n options = {\n serialize: options\n };\n } \n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","import URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\nimport Blob from './classes/Blob.js'\n\nexport default {\n isBrowser: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob\n },\n protocols: ['http', 'https', 'file', 'blob', 'url', 'data']\n};\n","'use strict';\n\nimport AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';\nexport default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;\n","'use strict';\n\nexport default typeof FormData !== 'undefined' ? FormData : null;\n","'use strict'\n\nexport default typeof Blob !== 'undefined' ? Blob : null\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nconst _navigator = typeof navigator === 'object' && navigator || undefined;\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = hasBrowserEnv &&\n (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nconst origin = hasBrowserEnv && window.location.href || 'http://localhost';\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv,\n _navigator as navigator,\n origin\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n\n if (name === '__proto__') return true;\n\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http', 'fetch'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data) ||\n utils.isReadableStream(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (utils.isResponse(data) || utils.isReadableStream(data)) {\n return data;\n }\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else if (utils.isObject(header) && utils.isIterable(header)) {\n let obj = {}, dest, key;\n for (const entry of header) {\n if (!utils.isArray(entry)) {\n throw TypeError('Object iterator must return a key-value pair');\n }\n\n obj[key = entry[0]] = (dest = obj[key]) ?\n (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1];\n }\n\n setHeaders(obj, valueOrRewrite)\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n getSetCookie() {\n return this.get(\"set-cookie\") || [];\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","/**\n * Throttle decorator\n * @param {Function} fn\n * @param {Number} freq\n * @return {Function}\n */\nfunction throttle(fn, freq) {\n let timestamp = 0;\n let threshold = 1000 / freq;\n let lastArgs;\n let timer;\n\n const invoke = (args, now = Date.now()) => {\n timestamp = now;\n lastArgs = null;\n if (timer) {\n clearTimeout(timer);\n timer = null;\n }\n fn.apply(null, args);\n }\n\n const throttled = (...args) => {\n const now = Date.now();\n const passed = now - timestamp;\n if ( passed >= threshold) {\n invoke(args, now);\n } else {\n lastArgs = args;\n if (!timer) {\n timer = setTimeout(() => {\n timer = null;\n invoke(lastArgs)\n }, threshold - passed);\n }\n }\n }\n\n const flush = () => lastArgs && invoke(lastArgs);\n\n return [throttled, flush];\n}\n\nexport default throttle;\n","import speedometer from \"./speedometer.js\";\nimport throttle from \"./throttle.js\";\nimport utils from \"../utils.js\";\n\nexport const progressEventReducer = (listener, isDownloadStream, freq = 3) => {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return throttle(e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e,\n lengthComputable: total != null,\n [isDownloadStream ? 'download' : 'upload']: true\n };\n\n listener(data);\n }, freq);\n}\n\nexport const progressEventDecorator = (total, throttled) => {\n const lengthComputable = total != null;\n\n return [(loaded) => throttled[0]({\n lengthComputable,\n total,\n loaded\n }), throttled[1]];\n}\n\nexport const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args));\n","import platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {\n url = new URL(url, platform.origin);\n\n return (\n origin.protocol === url.protocol &&\n origin.host === url.host &&\n (isMSIE || origin.port === url.port)\n );\n})(\n new URL(platform.origin),\n platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)\n) : () => true;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {\n let isRelativeUrl = !isAbsoluteURL(requestedURL);\n if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/?\\/$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, prop, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, prop , caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, prop , caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, prop , caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport isURLSameOrigin from \"./isURLSameOrigin.js\";\nimport cookies from \"./cookies.js\";\nimport buildFullPath from \"../core/buildFullPath.js\";\nimport mergeConfig from \"../core/mergeConfig.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport buildURL from \"./buildURL.js\";\n\nexport default (config) => {\n const newConfig = mergeConfig({}, config);\n\n let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;\n\n newConfig.headers = headers = AxiosHeaders.from(headers);\n\n newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);\n\n // HTTP basic authentication\n if (auth) {\n headers.set('Authorization', 'Basic ' +\n btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))\n );\n }\n\n let contentType;\n\n if (utils.isFormData(data)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n headers.setContentType(undefined); // Let the browser set it\n } else if ((contentType = headers.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n\n if (platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {\n // Add xsrf header\n const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);\n\n if (xsrfValue) {\n headers.set(xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n return newConfig;\n}\n\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport composeSignals from \"../helpers/composeSignals.js\";\nimport {trackStream} from \"../helpers/trackStream.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\nimport resolveConfig from \"../helpers/resolveConfig.js\";\nimport settle from \"../core/settle.js\";\n\nconst isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function';\nconst isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function';\n\n// used only inside the fetch adapter\nconst encodeText = isFetchSupported && (typeof TextEncoder === 'function' ?\n ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) :\n async (str) => new Uint8Array(await new Response(str).arrayBuffer())\n);\n\nconst test = (fn, ...args) => {\n try {\n return !!fn(...args);\n } catch (e) {\n return false\n }\n}\n\nconst supportsRequestStream = isReadableStreamSupported && test(() => {\n let duplexAccessed = false;\n\n const hasContentType = new Request(platform.origin, {\n body: new ReadableStream(),\n method: 'POST',\n get duplex() {\n duplexAccessed = true;\n return 'half';\n },\n }).headers.has('Content-Type');\n\n return duplexAccessed && !hasContentType;\n});\n\nconst DEFAULT_CHUNK_SIZE = 64 * 1024;\n\nconst supportsResponseStream = isReadableStreamSupported &&\n test(() => utils.isReadableStream(new Response('').body));\n\n\nconst resolvers = {\n stream: supportsResponseStream && ((res) => res.body)\n};\n\nisFetchSupported && (((res) => {\n ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => {\n !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() :\n (_, config) => {\n throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config);\n })\n });\n})(new Response));\n\nconst getBodyLength = async (body) => {\n if (body == null) {\n return 0;\n }\n\n if(utils.isBlob(body)) {\n return body.size;\n }\n\n if(utils.isSpecCompliantForm(body)) {\n const _request = new Request(platform.origin, {\n method: 'POST',\n body,\n });\n return (await _request.arrayBuffer()).byteLength;\n }\n\n if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) {\n return body.byteLength;\n }\n\n if(utils.isURLSearchParams(body)) {\n body = body + '';\n }\n\n if(utils.isString(body)) {\n return (await encodeText(body)).byteLength;\n }\n}\n\nconst resolveBodyLength = async (headers, body) => {\n const length = utils.toFiniteNumber(headers.getContentLength());\n\n return length == null ? getBodyLength(body) : length;\n}\n\nexport default isFetchSupported && (async (config) => {\n let {\n url,\n method,\n data,\n signal,\n cancelToken,\n timeout,\n onDownloadProgress,\n onUploadProgress,\n responseType,\n headers,\n withCredentials = 'same-origin',\n fetchOptions\n } = resolveConfig(config);\n\n responseType = responseType ? (responseType + '').toLowerCase() : 'text';\n\n let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout);\n\n let request;\n\n const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => {\n composedSignal.unsubscribe();\n });\n\n let requestContentLength;\n\n try {\n if (\n onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' &&\n (requestContentLength = await resolveBodyLength(headers, data)) !== 0\n ) {\n let _request = new Request(url, {\n method: 'POST',\n body: data,\n duplex: \"half\"\n });\n\n let contentTypeHeader;\n\n if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) {\n headers.setContentType(contentTypeHeader)\n }\n\n if (_request.body) {\n const [onProgress, flush] = progressEventDecorator(\n requestContentLength,\n progressEventReducer(asyncDecorator(onUploadProgress))\n );\n\n data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush);\n }\n }\n\n if (!utils.isString(withCredentials)) {\n withCredentials = withCredentials ? 'include' : 'omit';\n }\n\n // Cloudflare Workers throws when credentials are defined\n // see https://github.com/cloudflare/workerd/issues/902\n const isCredentialsSupported = \"credentials\" in Request.prototype;\n request = new Request(url, {\n ...fetchOptions,\n signal: composedSignal,\n method: method.toUpperCase(),\n headers: headers.normalize().toJSON(),\n body: data,\n duplex: \"half\",\n credentials: isCredentialsSupported ? withCredentials : undefined\n });\n\n let response = await fetch(request, fetchOptions);\n\n const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response');\n\n if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) {\n const options = {};\n\n ['status', 'statusText', 'headers'].forEach(prop => {\n options[prop] = response[prop];\n });\n\n const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length'));\n\n const [onProgress, flush] = onDownloadProgress && progressEventDecorator(\n responseContentLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true)\n ) || [];\n\n response = new Response(\n trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => {\n flush && flush();\n unsubscribe && unsubscribe();\n }),\n options\n );\n }\n\n responseType = responseType || 'text';\n\n let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config);\n\n !isStreamResponse && unsubscribe && unsubscribe();\n\n return await new Promise((resolve, reject) => {\n settle(resolve, reject, {\n data: responseData,\n headers: AxiosHeaders.from(response.headers),\n status: response.status,\n statusText: response.statusText,\n config,\n request\n })\n })\n } catch (err) {\n unsubscribe && unsubscribe();\n\n if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) {\n throw Object.assign(\n new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request),\n {\n cause: err.cause || err\n }\n )\n }\n\n throw AxiosError.from(err, err && err.code, config, request);\n }\n});\n\n\n","import utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport {progressEventReducer} from '../helpers/progressEventReducer.js';\nimport resolveConfig from \"../helpers/resolveConfig.js\";\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n const _config = resolveConfig(config);\n let requestData = _config.data;\n const requestHeaders = AxiosHeaders.from(_config.headers).normalize();\n let {responseType, onUploadProgress, onDownloadProgress} = _config;\n let onCanceled;\n let uploadThrottled, downloadThrottled;\n let flushUpload, flushDownload;\n\n function done() {\n flushUpload && flushUpload(); // flush events\n flushDownload && flushDownload(); // flush events\n\n _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);\n\n _config.signal && _config.signal.removeEventListener('abort', onCanceled);\n }\n\n let request = new XMLHttpRequest();\n\n request.open(_config.method.toUpperCase(), _config.url, true);\n\n // Set the request timeout in MS\n request.timeout = _config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = _config.transitional || transitionalDefaults;\n if (_config.timeoutErrorMessage) {\n timeoutErrorMessage = _config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(_config.withCredentials)) {\n request.withCredentials = !!_config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = _config.responseType;\n }\n\n // Handle progress if needed\n if (onDownloadProgress) {\n ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));\n request.addEventListener('progress', downloadThrottled);\n }\n\n // Not all browsers support upload events\n if (onUploadProgress && request.upload) {\n ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));\n\n request.upload.addEventListener('progress', uploadThrottled);\n\n request.upload.addEventListener('loadend', flushUpload);\n }\n\n if (_config.cancelToken || _config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n _config.cancelToken && _config.cancelToken.subscribe(onCanceled);\n if (_config.signal) {\n _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(_config.url);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","import CanceledError from \"../cancel/CanceledError.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport utils from '../utils.js';\n\nconst composeSignals = (signals, timeout) => {\n const {length} = (signals = signals ? signals.filter(Boolean) : []);\n\n if (timeout || length) {\n let controller = new AbortController();\n\n let aborted;\n\n const onabort = function (reason) {\n if (!aborted) {\n aborted = true;\n unsubscribe();\n const err = reason instanceof Error ? reason : this.reason;\n controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));\n }\n }\n\n let timer = timeout && setTimeout(() => {\n timer = null;\n onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))\n }, timeout)\n\n const unsubscribe = () => {\n if (signals) {\n timer && clearTimeout(timer);\n timer = null;\n signals.forEach(signal => {\n signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);\n });\n signals = null;\n }\n }\n\n signals.forEach((signal) => signal.addEventListener('abort', onabort));\n\n const {signal} = controller;\n\n signal.unsubscribe = () => utils.asap(unsubscribe);\n\n return signal;\n }\n}\n\nexport default composeSignals;\n","\nexport const streamChunk = function* (chunk, chunkSize) {\n let len = chunk.byteLength;\n\n if (!chunkSize || len < chunkSize) {\n yield chunk;\n return;\n }\n\n let pos = 0;\n let end;\n\n while (pos < len) {\n end = pos + chunkSize;\n yield chunk.slice(pos, end);\n pos = end;\n }\n}\n\nexport const readBytes = async function* (iterable, chunkSize) {\n for await (const chunk of readStream(iterable)) {\n yield* streamChunk(chunk, chunkSize);\n }\n}\n\nconst readStream = async function* (stream) {\n if (stream[Symbol.asyncIterator]) {\n yield* stream;\n return;\n }\n\n const reader = stream.getReader();\n try {\n for (;;) {\n const {done, value} = await reader.read();\n if (done) {\n break;\n }\n yield value;\n }\n } finally {\n await reader.cancel();\n }\n}\n\nexport const trackStream = (stream, chunkSize, onProgress, onFinish) => {\n const iterator = readBytes(stream, chunkSize);\n\n let bytes = 0;\n let done;\n let _onFinish = (e) => {\n if (!done) {\n done = true;\n onFinish && onFinish(e);\n }\n }\n\n return new ReadableStream({\n async pull(controller) {\n try {\n const {done, value} = await iterator.next();\n\n if (done) {\n _onFinish();\n controller.close();\n return;\n }\n\n let len = value.byteLength;\n if (onProgress) {\n let loadedBytes = bytes += len;\n onProgress(loadedBytes);\n }\n controller.enqueue(new Uint8Array(value));\n } catch (err) {\n _onFinish(err);\n throw err;\n }\n },\n cancel(reason) {\n _onFinish(reason);\n return iterator.return();\n }\n }, {\n highWaterMark: 2\n })\n}\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport fetchAdapter from './fetch.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter,\n fetch: fetchAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","// eslint-disable-next-line strict\nexport default null;\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","export const VERSION = \"1.10.0\";","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\nvalidators.spelling = function spelling(correctSpelling) {\n return (value, opt) => {\n // eslint-disable-next-line no-console\n console.warn(`${opt} is likely a misspelling of ${correctSpelling}`);\n return true;\n }\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig || {};\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n async request(configOrUrl, config) {\n try {\n return await this._request(configOrUrl, config);\n } catch (err) {\n if (err instanceof Error) {\n let dummy = {};\n\n Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error());\n\n // slice off the Error: ... line\n const stack = dummy.stack ? dummy.stack.replace(/^.+\\n/, '') : '';\n try {\n if (!err.stack) {\n err.stack = stack;\n // match without the 2 top stack lines\n } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\\n.+\\n/, ''))) {\n err.stack += '\\n' + stack\n }\n } catch (e) {\n // ignore the case where \"stack\" is an un-writable property\n }\n }\n\n throw err;\n }\n }\n\n _request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.allowAbsoluteUrls\n if (config.allowAbsoluteUrls !== undefined) {\n // do nothing\n } else if (this.defaults.allowAbsoluteUrls !== undefined) {\n config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls;\n } else {\n config.allowAbsoluteUrls = true;\n }\n\n validator.assertOptions(config, {\n baseUrl: validators.spelling('baseURL'),\n withXsrfToken: validators.spelling('withXSRFToken')\n }, true);\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n toAbortSignal() {\n const controller = new AbortController();\n\n const abort = (err) => {\n controller.abort(err);\n };\n\n this.subscribe(abort);\n\n controller.signal.unsubscribe = () => this.unsubscribe(abort);\n\n return controller.signal;\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n ResetContent: 205,\n PartialContent: 206,\n MultiStatus: 207,\n AlreadyReported: 208,\n ImUsed: 226,\n MultipleChoices: 300,\n MovedPermanently: 301,\n Found: 302,\n SeeOther: 303,\n NotModified: 304,\n UseProxy: 305,\n Unused: 306,\n TemporaryRedirect: 307,\n PermanentRedirect: 308,\n BadRequest: 400,\n Unauthorized: 401,\n PaymentRequired: 402,\n Forbidden: 403,\n NotFound: 404,\n MethodNotAllowed: 405,\n NotAcceptable: 406,\n ProxyAuthenticationRequired: 407,\n RequestTimeout: 408,\n Conflict: 409,\n Gone: 410,\n LengthRequired: 411,\n PreconditionFailed: 412,\n PayloadTooLarge: 413,\n UriTooLong: 414,\n UnsupportedMediaType: 415,\n RangeNotSatisfiable: 416,\n ExpectationFailed: 417,\n ImATeapot: 418,\n MisdirectedRequest: 421,\n UnprocessableEntity: 422,\n Locked: 423,\n FailedDependency: 424,\n TooEarly: 425,\n UpgradeRequired: 426,\n PreconditionRequired: 428,\n TooManyRequests: 429,\n RequestHeaderFieldsTooLarge: 431,\n UnavailableForLegalReasons: 451,\n InternalServerError: 500,\n NotImplemented: 501,\n BadGateway: 502,\n ServiceUnavailable: 503,\n GatewayTimeout: 504,\n HttpVersionNotSupported: 505,\n VariantAlsoNegotiates: 506,\n InsufficientStorage: 507,\n LoopDetected: 508,\n NotExtended: 510,\n NetworkAuthenticationRequired: 511,\n};\n\nObject.entries(HttpStatusCode).forEach(([key, value]) => {\n HttpStatusCode[value] = key;\n});\n\nexport default HttpStatusCode;\n","'use strict';\n\nimport utils from './utils.js';\nimport bind from './helpers/bind.js';\nimport Axios from './core/Axios.js';\nimport mergeConfig from './core/mergeConfig.js';\nimport defaults from './defaults/index.js';\nimport formDataToJSON from './helpers/formDataToJSON.js';\nimport CanceledError from './cancel/CanceledError.js';\nimport CancelToken from './cancel/CancelToken.js';\nimport isCancel from './cancel/isCancel.js';\nimport {VERSION} from './env/data.js';\nimport toFormData from './helpers/toFormData.js';\nimport AxiosError from './core/AxiosError.js';\nimport spread from './helpers/spread.js';\nimport isAxiosError from './helpers/isAxiosError.js';\nimport AxiosHeaders from \"./core/AxiosHeaders.js\";\nimport adapters from './adapters/adapters.js';\nimport HttpStatusCode from './helpers/HttpStatusCode.js';\n\n/**\n * Create an instance of Axios\n *\n * @param {Object} defaultConfig The default config for the instance\n *\n * @returns {Axios} A new instance of Axios\n */\nfunction createInstance(defaultConfig) {\n const context = new Axios(defaultConfig);\n const instance = bind(Axios.prototype.request, context);\n\n // Copy axios.prototype to instance\n utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});\n\n // Copy context to instance\n utils.extend(instance, context, null, {allOwnKeys: true});\n\n // Factory for creating new instances\n instance.create = function create(instanceConfig) {\n return createInstance(mergeConfig(defaultConfig, instanceConfig));\n };\n\n return instance;\n}\n\n// Create the default instance to be exported\nconst axios = createInstance(defaults);\n\n// Expose Axios class to allow class inheritance\naxios.Axios = Axios;\n\n// Expose Cancel & CancelToken\naxios.CanceledError = CanceledError;\naxios.CancelToken = CancelToken;\naxios.isCancel = isCancel;\naxios.VERSION = VERSION;\naxios.toFormData = toFormData;\n\n// Expose AxiosError class\naxios.AxiosError = AxiosError;\n\n// alias for CanceledError for backward compatibility\naxios.Cancel = axios.CanceledError;\n\n// Expose all/spread\naxios.all = function all(promises) {\n return Promise.all(promises);\n};\n\naxios.spread = spread;\n\n// Expose isAxiosError\naxios.isAxiosError = isAxiosError;\n\n// Expose mergeConfig\naxios.mergeConfig = mergeConfig;\n\naxios.AxiosHeaders = AxiosHeaders;\n\naxios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);\n\naxios.getAdapter = adapters.getAdapter;\n\naxios.HttpStatusCode = HttpStatusCode;\n\naxios.default = 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\ No newline at end of file diff --git a/node_modules/axios/dist/browser/axios.cjs b/node_modules/axios/dist/browser/axios.cjs new file mode 100644 index 0000000..01f9185 --- /dev/null +++ b/node_modules/axios/dist/browser/axios.cjs @@ -0,0 +1,3730 @@ +/*! Axios v1.10.0 Copyright (c) 2025 Matt Zabriskie and contributors */ +'use strict'; + +function bind(fn, thisArg) { + return function wrap() { + return fn.apply(thisArg, arguments); + }; +} + +// utils is a library of generic helper functions non-specific to axios + +const {toString} = Object.prototype; +const {getPrototypeOf} = Object; +const {iterator, toStringTag} = Symbol; + +const kindOf = (cache => thing => { + const str = toString.call(thing); + return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase()); +})(Object.create(null)); + +const kindOfTest = (type) => { + type = type.toLowerCase(); + return (thing) => kindOf(thing) === type +}; + +const typeOfTest = type => thing => typeof thing === type; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * + * @returns {boolean} True if value is an Array, otherwise false + */ +const {isArray} = Array; + +/** + * Determine if a value is undefined + * + * @param {*} val The value to test + * + * @returns {boolean} True if the value is undefined, otherwise false + */ +const isUndefined = typeOfTest('undefined'); + +/** + * Determine if a value is a Buffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Buffer, otherwise false + */ +function isBuffer(val) { + return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) + && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val); +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +const isArrayBuffer = kindOfTest('ArrayBuffer'); + + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + let result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (isArrayBuffer(val.buffer)); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a String, otherwise false + */ +const isString = typeOfTest('string'); + +/** + * Determine if a value is a Function + * + * @param {*} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +const isFunction = typeOfTest('function'); + +/** + * Determine if a value is a Number + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Number, otherwise false + */ +const isNumber = typeOfTest('number'); + +/** + * Determine if a value is an Object + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an Object, otherwise false + */ +const isObject = (thing) => thing !== null && typeof thing === 'object'; + +/** + * Determine if a value is a Boolean + * + * @param {*} thing The value to test + * @returns {boolean} True if value is a Boolean, otherwise false + */ +const isBoolean = thing => thing === true || thing === false; + +/** + * Determine if a value is a plain Object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a plain Object, otherwise false + */ +const isPlainObject = (val) => { + if (kindOf(val) !== 'object') { + return false; + } + + const prototype = getPrototypeOf(val); + return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val); +}; + +/** + * Determine if a value is a Date + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Date, otherwise false + */ +const isDate = kindOfTest('Date'); + +/** + * Determine if a value is a File + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFile = kindOfTest('File'); + +/** + * Determine if a value is a Blob + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Blob, otherwise false + */ +const isBlob = kindOfTest('Blob'); + +/** + * Determine if a value is a FileList + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFileList = kindOfTest('FileList'); + +/** + * Determine if a value is a Stream + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Stream, otherwise false + */ +const isStream = (val) => isObject(val) && isFunction(val.pipe); + +/** + * Determine if a value is a FormData + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an FormData, otherwise false + */ +const isFormData = (thing) => { + let kind; + return thing && ( + (typeof FormData === 'function' && thing instanceof FormData) || ( + isFunction(thing.append) && ( + (kind = kindOf(thing)) === 'formdata' || + // detect form-data instance + (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]') + ) + ) + ) +}; + +/** + * Determine if a value is a URLSearchParams object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +const isURLSearchParams = kindOfTest('URLSearchParams'); + +const [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest); + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * + * @returns {String} The String freed of excess whitespace + */ +const trim = (str) => str.trim ? + str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, ''); + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + * + * @param {Boolean} [allOwnKeys = false] + * @returns {any} + */ +function forEach(obj, fn, {allOwnKeys = false} = {}) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + let i; + let l; + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj); + const len = keys.length; + let key; + + for (i = 0; i < len; i++) { + key = keys[i]; + fn.call(null, obj[key], key, obj); + } + } +} + +function findKey(obj, key) { + key = key.toLowerCase(); + const keys = Object.keys(obj); + let i = keys.length; + let _key; + while (i-- > 0) { + _key = keys[i]; + if (key === _key.toLowerCase()) { + return _key; + } + } + return null; +} + +const _global = (() => { + /*eslint no-undef:0*/ + if (typeof globalThis !== "undefined") return globalThis; + return typeof self !== "undefined" ? self : (typeof window !== 'undefined' ? window : global) +})(); + +const isContextDefined = (context) => !isUndefined(context) && context !== _global; + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + const {caseless} = isContextDefined(this) && this || {}; + const result = {}; + const assignValue = (val, key) => { + const targetKey = caseless && findKey(result, key) || key; + if (isPlainObject(result[targetKey]) && isPlainObject(val)) { + result[targetKey] = merge(result[targetKey], val); + } else if (isPlainObject(val)) { + result[targetKey] = merge({}, val); + } else if (isArray(val)) { + result[targetKey] = val.slice(); + } else { + result[targetKey] = val; + } + }; + + for (let i = 0, l = arguments.length; i < l; i++) { + arguments[i] && forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * + * @param {Boolean} [allOwnKeys] + * @returns {Object} The resulting value of object a + */ +const extend = (a, b, thisArg, {allOwnKeys}= {}) => { + forEach(b, (val, key) => { + if (thisArg && isFunction(val)) { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }, {allOwnKeys}); + return a; +}; + +/** + * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) + * + * @param {string} content with BOM + * + * @returns {string} content value without BOM + */ +const stripBOM = (content) => { + if (content.charCodeAt(0) === 0xFEFF) { + content = content.slice(1); + } + return content; +}; + +/** + * Inherit the prototype methods from one constructor into another + * @param {function} constructor + * @param {function} superConstructor + * @param {object} [props] + * @param {object} [descriptors] + * + * @returns {void} + */ +const inherits = (constructor, superConstructor, props, descriptors) => { + constructor.prototype = Object.create(superConstructor.prototype, descriptors); + constructor.prototype.constructor = constructor; + Object.defineProperty(constructor, 'super', { + value: superConstructor.prototype + }); + props && Object.assign(constructor.prototype, props); +}; + +/** + * Resolve object with deep prototype chain to a flat object + * @param {Object} sourceObj source object + * @param {Object} [destObj] + * @param {Function|Boolean} [filter] + * @param {Function} [propFilter] + * + * @returns {Object} + */ +const toFlatObject = (sourceObj, destObj, filter, propFilter) => { + let props; + let i; + let prop; + const merged = {}; + + destObj = destObj || {}; + // eslint-disable-next-line no-eq-null,eqeqeq + if (sourceObj == null) return destObj; + + do { + props = Object.getOwnPropertyNames(sourceObj); + i = props.length; + while (i-- > 0) { + prop = props[i]; + if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) { + destObj[prop] = sourceObj[prop]; + merged[prop] = true; + } + } + sourceObj = filter !== false && getPrototypeOf(sourceObj); + } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype); + + return destObj; +}; + +/** + * Determines whether a string ends with the characters of a specified string + * + * @param {String} str + * @param {String} searchString + * @param {Number} [position= 0] + * + * @returns {boolean} + */ +const endsWith = (str, searchString, position) => { + str = String(str); + if (position === undefined || position > str.length) { + position = str.length; + } + position -= searchString.length; + const lastIndex = str.indexOf(searchString, position); + return lastIndex !== -1 && lastIndex === position; +}; + + +/** + * Returns new array from array like object or null if failed + * + * @param {*} [thing] + * + * @returns {?Array} + */ +const toArray = (thing) => { + if (!thing) return null; + if (isArray(thing)) return thing; + let i = thing.length; + if (!isNumber(i)) return null; + const arr = new Array(i); + while (i-- > 0) { + arr[i] = thing[i]; + } + return arr; +}; + +/** + * Checking if the Uint8Array exists and if it does, it returns a function that checks if the + * thing passed in is an instance of Uint8Array + * + * @param {TypedArray} + * + * @returns {Array} + */ +// eslint-disable-next-line func-names +const isTypedArray = (TypedArray => { + // eslint-disable-next-line func-names + return thing => { + return TypedArray && thing instanceof TypedArray; + }; +})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array)); + +/** + * For each entry in the object, call the function with the key and value. + * + * @param {Object} obj - The object to iterate over. + * @param {Function} fn - The function to call for each entry. + * + * @returns {void} + */ +const forEachEntry = (obj, fn) => { + const generator = obj && obj[iterator]; + + const _iterator = generator.call(obj); + + let result; + + while ((result = _iterator.next()) && !result.done) { + const pair = result.value; + fn.call(obj, pair[0], pair[1]); + } +}; + +/** + * It takes a regular expression and a string, and returns an array of all the matches + * + * @param {string} regExp - The regular expression to match against. + * @param {string} str - The string to search. + * + * @returns {Array} + */ +const matchAll = (regExp, str) => { + let matches; + const arr = []; + + while ((matches = regExp.exec(str)) !== null) { + arr.push(matches); + } + + return arr; +}; + +/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */ +const isHTMLForm = kindOfTest('HTMLFormElement'); + +const toCamelCase = str => { + return str.toLowerCase().replace(/[-_\s]([a-z\d])(\w*)/g, + function replacer(m, p1, p2) { + return p1.toUpperCase() + p2; + } + ); +}; + +/* Creating a function that will check if an object has a property. */ +const hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype); + +/** + * Determine if a value is a RegExp object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a RegExp object, otherwise false + */ +const isRegExp = kindOfTest('RegExp'); + +const reduceDescriptors = (obj, reducer) => { + const descriptors = Object.getOwnPropertyDescriptors(obj); + const reducedDescriptors = {}; + + forEach(descriptors, (descriptor, name) => { + let ret; + if ((ret = reducer(descriptor, name, obj)) !== false) { + reducedDescriptors[name] = ret || descriptor; + } + }); + + Object.defineProperties(obj, reducedDescriptors); +}; + +/** + * Makes all methods read-only + * @param {Object} obj + */ + +const freezeMethods = (obj) => { + reduceDescriptors(obj, (descriptor, name) => { + // skip restricted props in strict mode + if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) { + return false; + } + + const value = obj[name]; + + if (!isFunction(value)) return; + + descriptor.enumerable = false; + + if ('writable' in descriptor) { + descriptor.writable = false; + return; + } + + if (!descriptor.set) { + descriptor.set = () => { + throw Error('Can not rewrite read-only method \'' + name + '\''); + }; + } + }); +}; + +const toObjectSet = (arrayOrString, delimiter) => { + const obj = {}; + + const define = (arr) => { + arr.forEach(value => { + obj[value] = true; + }); + }; + + isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter)); + + return obj; +}; + +const noop = () => {}; + +const toFiniteNumber = (value, defaultValue) => { + return value != null && Number.isFinite(value = +value) ? value : defaultValue; +}; + +/** + * If the thing is a FormData object, return true, otherwise return false. + * + * @param {unknown} thing - The thing to check. + * + * @returns {boolean} + */ +function isSpecCompliantForm(thing) { + return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]); +} + +const toJSONObject = (obj) => { + const stack = new Array(10); + + const visit = (source, i) => { + + if (isObject(source)) { + if (stack.indexOf(source) >= 0) { + return; + } + + if(!('toJSON' in source)) { + stack[i] = source; + const target = isArray(source) ? [] : {}; + + forEach(source, (value, key) => { + const reducedValue = visit(value, i + 1); + !isUndefined(reducedValue) && (target[key] = reducedValue); + }); + + stack[i] = undefined; + + return target; + } + } + + return source; + }; + + return visit(obj, 0); +}; + +const isAsyncFn = kindOfTest('AsyncFunction'); + +const isThenable = (thing) => + thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch); + +// original code +// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34 + +const _setImmediate = ((setImmediateSupported, postMessageSupported) => { + if (setImmediateSupported) { + return setImmediate; + } + + return postMessageSupported ? ((token, callbacks) => { + _global.addEventListener("message", ({source, data}) => { + if (source === _global && data === token) { + callbacks.length && callbacks.shift()(); + } + }, false); + + return (cb) => { + callbacks.push(cb); + _global.postMessage(token, "*"); + } + })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb); +})( + typeof setImmediate === 'function', + isFunction(_global.postMessage) +); + +const asap = typeof queueMicrotask !== 'undefined' ? + queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate); + +// ********************* + + +const isIterable = (thing) => thing != null && isFunction(thing[iterator]); + + +var utils$1 = { + isArray, + isArrayBuffer, + isBuffer, + isFormData, + isArrayBufferView, + isString, + isNumber, + isBoolean, + isObject, + isPlainObject, + isReadableStream, + isRequest, + isResponse, + isHeaders, + isUndefined, + isDate, + isFile, + isBlob, + isRegExp, + isFunction, + isStream, + isURLSearchParams, + isTypedArray, + isFileList, + forEach, + merge, + extend, + trim, + stripBOM, + inherits, + toFlatObject, + kindOf, + kindOfTest, + endsWith, + toArray, + forEachEntry, + matchAll, + isHTMLForm, + hasOwnProperty, + hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection + reduceDescriptors, + freezeMethods, + toObjectSet, + toCamelCase, + noop, + toFiniteNumber, + findKey, + global: _global, + isContextDefined, + isSpecCompliantForm, + toJSONObject, + isAsyncFn, + isThenable, + setImmediate: _setImmediate, + asap, + isIterable +}; + +/** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [config] The config. + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * + * @returns {Error} The created error. + */ +function AxiosError(message, code, config, request, response) { + Error.call(this); + + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } else { + this.stack = (new Error()).stack; + } + + this.message = message; + this.name = 'AxiosError'; + code && (this.code = code); + config && (this.config = config); + request && (this.request = request); + if (response) { + this.response = response; + this.status = response.status ? response.status : null; + } +} + +utils$1.inherits(AxiosError, Error, { + toJSON: function toJSON() { + return { + // Standard + message: this.message, + name: this.name, + // Microsoft + description: this.description, + number: this.number, + // Mozilla + fileName: this.fileName, + lineNumber: this.lineNumber, + columnNumber: this.columnNumber, + stack: this.stack, + // Axios + config: utils$1.toJSONObject(this.config), + code: this.code, + status: this.status + }; + } +}); + +const prototype$1 = AxiosError.prototype; +const descriptors = {}; + +[ + 'ERR_BAD_OPTION_VALUE', + 'ERR_BAD_OPTION', + 'ECONNABORTED', + 'ETIMEDOUT', + 'ERR_NETWORK', + 'ERR_FR_TOO_MANY_REDIRECTS', + 'ERR_DEPRECATED', + 'ERR_BAD_RESPONSE', + 'ERR_BAD_REQUEST', + 'ERR_CANCELED', + 'ERR_NOT_SUPPORT', + 'ERR_INVALID_URL' +// eslint-disable-next-line func-names +].forEach(code => { + descriptors[code] = {value: code}; +}); + +Object.defineProperties(AxiosError, descriptors); +Object.defineProperty(prototype$1, 'isAxiosError', {value: true}); + +// eslint-disable-next-line func-names +AxiosError.from = (error, code, config, request, response, customProps) => { + const axiosError = Object.create(prototype$1); + + utils$1.toFlatObject(error, axiosError, function filter(obj) { + return obj !== Error.prototype; + }, prop => { + return prop !== 'isAxiosError'; + }); + + AxiosError.call(axiosError, error.message, code, config, request, response); + + axiosError.cause = error; + + axiosError.name = error.name; + + customProps && Object.assign(axiosError, customProps); + + return axiosError; +}; + +// eslint-disable-next-line strict +var httpAdapter = null; + +/** + * Determines if the given thing is a array or js object. + * + * @param {string} thing - The object or array to be visited. + * + * @returns {boolean} + */ +function isVisitable(thing) { + return utils$1.isPlainObject(thing) || utils$1.isArray(thing); +} + +/** + * It removes the brackets from the end of a string + * + * @param {string} key - The key of the parameter. + * + * @returns {string} the key without the brackets. + */ +function removeBrackets(key) { + return utils$1.endsWith(key, '[]') ? key.slice(0, -2) : key; +} + +/** + * It takes a path, a key, and a boolean, and returns a string + * + * @param {string} path - The path to the current key. + * @param {string} key - The key of the current object being iterated over. + * @param {string} dots - If true, the key will be rendered with dots instead of brackets. + * + * @returns {string} The path to the current key. + */ +function renderKey(path, key, dots) { + if (!path) return key; + return path.concat(key).map(function each(token, i) { + // eslint-disable-next-line no-param-reassign + token = removeBrackets(token); + return !dots && i ? '[' + token + ']' : token; + }).join(dots ? '.' : ''); +} + +/** + * If the array is an array and none of its elements are visitable, then it's a flat array. + * + * @param {Array} arr - The array to check + * + * @returns {boolean} + */ +function isFlatArray(arr) { + return utils$1.isArray(arr) && !arr.some(isVisitable); +} + +const predicates = utils$1.toFlatObject(utils$1, {}, null, function filter(prop) { + return /^is[A-Z]/.test(prop); +}); + +/** + * Convert a data object to FormData + * + * @param {Object} obj + * @param {?Object} [formData] + * @param {?Object} [options] + * @param {Function} [options.visitor] + * @param {Boolean} [options.metaTokens = true] + * @param {Boolean} [options.dots = false] + * @param {?Boolean} [options.indexes = false] + * + * @returns {Object} + **/ + +/** + * It converts an object into a FormData object + * + * @param {Object} obj - The object to convert to form data. + * @param {string} formData - The FormData object to append to. + * @param {Object} options + * + * @returns + */ +function toFormData(obj, formData, options) { + if (!utils$1.isObject(obj)) { + throw new TypeError('target must be an object'); + } + + // eslint-disable-next-line no-param-reassign + formData = formData || new (FormData)(); + + // eslint-disable-next-line no-param-reassign + options = utils$1.toFlatObject(options, { + metaTokens: true, + dots: false, + indexes: false + }, false, function defined(option, source) { + // eslint-disable-next-line no-eq-null,eqeqeq + return !utils$1.isUndefined(source[option]); + }); + + const metaTokens = options.metaTokens; + // eslint-disable-next-line no-use-before-define + const visitor = options.visitor || defaultVisitor; + const dots = options.dots; + const indexes = options.indexes; + const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob; + const useBlob = _Blob && utils$1.isSpecCompliantForm(formData); + + if (!utils$1.isFunction(visitor)) { + throw new TypeError('visitor must be a function'); + } + + function convertValue(value) { + if (value === null) return ''; + + if (utils$1.isDate(value)) { + return value.toISOString(); + } + + if (utils$1.isBoolean(value)) { + return value.toString(); + } + + if (!useBlob && utils$1.isBlob(value)) { + throw new AxiosError('Blob is not supported. Use a Buffer instead.'); + } + + if (utils$1.isArrayBuffer(value) || utils$1.isTypedArray(value)) { + return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value); + } + + return value; + } + + /** + * Default visitor. + * + * @param {*} value + * @param {String|Number} key + * @param {Array} path + * @this {FormData} + * + * @returns {boolean} return true to visit the each prop of the value recursively + */ + function defaultVisitor(value, key, path) { + let arr = value; + + if (value && !path && typeof value === 'object') { + if (utils$1.endsWith(key, '{}')) { + // eslint-disable-next-line no-param-reassign + key = metaTokens ? key : key.slice(0, -2); + // eslint-disable-next-line no-param-reassign + value = JSON.stringify(value); + } else if ( + (utils$1.isArray(value) && isFlatArray(value)) || + ((utils$1.isFileList(value) || utils$1.endsWith(key, '[]')) && (arr = utils$1.toArray(value)) + )) { + // eslint-disable-next-line no-param-reassign + key = removeBrackets(key); + + arr.forEach(function each(el, index) { + !(utils$1.isUndefined(el) || el === null) && formData.append( + // eslint-disable-next-line no-nested-ternary + indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'), + convertValue(el) + ); + }); + return false; + } + } + + if (isVisitable(value)) { + return true; + } + + formData.append(renderKey(path, key, dots), convertValue(value)); + + return false; + } + + const stack = []; + + const exposedHelpers = Object.assign(predicates, { + defaultVisitor, + convertValue, + isVisitable + }); + + function build(value, path) { + if (utils$1.isUndefined(value)) return; + + if (stack.indexOf(value) !== -1) { + throw Error('Circular reference detected in ' + path.join('.')); + } + + stack.push(value); + + utils$1.forEach(value, function each(el, key) { + const result = !(utils$1.isUndefined(el) || el === null) && visitor.call( + formData, el, utils$1.isString(key) ? key.trim() : key, path, exposedHelpers + ); + + if (result === true) { + build(el, path ? path.concat(key) : [key]); + } + }); + + stack.pop(); + } + + if (!utils$1.isObject(obj)) { + throw new TypeError('data must be an object'); + } + + build(obj); + + return formData; +} + +/** + * It encodes a string by replacing all characters that are not in the unreserved set with + * their percent-encoded equivalents + * + * @param {string} str - The string to encode. + * + * @returns {string} The encoded string. + */ +function encode$1(str) { + const charMap = { + '!': '%21', + "'": '%27', + '(': '%28', + ')': '%29', + '~': '%7E', + '%20': '+', + '%00': '\x00' + }; + return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) { + return charMap[match]; + }); +} + +/** + * It takes a params object and converts it to a FormData object + * + * @param {Object} params - The parameters to be converted to a FormData object. + * @param {Object} options - The options object passed to the Axios constructor. + * + * @returns {void} + */ +function AxiosURLSearchParams(params, options) { + this._pairs = []; + + params && toFormData(params, this, options); +} + +const prototype = AxiosURLSearchParams.prototype; + +prototype.append = function append(name, value) { + this._pairs.push([name, value]); +}; + +prototype.toString = function toString(encoder) { + const _encode = encoder ? function(value) { + return encoder.call(this, value, encode$1); + } : encode$1; + + return this._pairs.map(function each(pair) { + return _encode(pair[0]) + '=' + _encode(pair[1]); + }, '').join('&'); +}; + +/** + * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their + * URI encoded counterparts + * + * @param {string} val The value to be encoded. + * + * @returns {string} The encoded value. + */ +function encode(val) { + return encodeURIComponent(val). + replace(/%3A/gi, ':'). + replace(/%24/g, '$'). + replace(/%2C/gi, ','). + replace(/%20/g, '+'). + replace(/%5B/gi, '['). + replace(/%5D/gi, ']'); +} + +/** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @param {?(object|Function)} options + * + * @returns {string} The formatted url + */ +function buildURL(url, params, options) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + + const _encode = options && options.encode || encode; + + if (utils$1.isFunction(options)) { + options = { + serialize: options + }; + } + + const serializeFn = options && options.serialize; + + let serializedParams; + + if (serializeFn) { + serializedParams = serializeFn(params, options); + } else { + serializedParams = utils$1.isURLSearchParams(params) ? + params.toString() : + new AxiosURLSearchParams(params, options).toString(_encode); + } + + if (serializedParams) { + const hashmarkIndex = url.indexOf("#"); + + if (hashmarkIndex !== -1) { + url = url.slice(0, hashmarkIndex); + } + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + + return url; +} + +class InterceptorManager { + constructor() { + this.handlers = []; + } + + /** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ + use(fulfilled, rejected, options) { + this.handlers.push({ + fulfilled, + rejected, + synchronous: options ? options.synchronous : false, + runWhen: options ? options.runWhen : null + }); + return this.handlers.length - 1; + } + + /** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + * + * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise + */ + eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } + } + + /** + * Clear all interceptors from the stack + * + * @returns {void} + */ + clear() { + if (this.handlers) { + this.handlers = []; + } + } + + /** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + * + * @returns {void} + */ + forEach(fn) { + utils$1.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); + } +} + +var InterceptorManager$1 = InterceptorManager; + +var transitionalDefaults = { + silentJSONParsing: true, + forcedJSONParsing: true, + clarifyTimeoutError: false +}; + +var URLSearchParams$1 = typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams; + +var FormData$1 = typeof FormData !== 'undefined' ? FormData : null; + +var Blob$1 = typeof Blob !== 'undefined' ? Blob : null; + +var platform$1 = { + isBrowser: true, + classes: { + URLSearchParams: URLSearchParams$1, + FormData: FormData$1, + Blob: Blob$1 + }, + protocols: ['http', 'https', 'file', 'blob', 'url', 'data'] +}; + +const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined'; + +const _navigator = typeof navigator === 'object' && navigator || undefined; + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + * + * @returns {boolean} + */ +const hasStandardBrowserEnv = hasBrowserEnv && + (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0); + +/** + * Determine if we're running in a standard browser webWorker environment + * + * Although the `isStandardBrowserEnv` method indicates that + * `allows axios to run in a web worker`, the WebWorker will still be + * filtered out due to its judgment standard + * `typeof window !== 'undefined' && typeof document !== 'undefined'`. + * This leads to a problem when axios post `FormData` in webWorker + */ +const hasStandardBrowserWebWorkerEnv = (() => { + return ( + typeof WorkerGlobalScope !== 'undefined' && + // eslint-disable-next-line no-undef + self instanceof WorkerGlobalScope && + typeof self.importScripts === 'function' + ); +})(); + +const origin = hasBrowserEnv && window.location.href || 'http://localhost'; + +var utils = /*#__PURE__*/Object.freeze({ + __proto__: null, + hasBrowserEnv: hasBrowserEnv, + hasStandardBrowserWebWorkerEnv: hasStandardBrowserWebWorkerEnv, + hasStandardBrowserEnv: hasStandardBrowserEnv, + navigator: _navigator, + origin: origin +}); + +var platform = { + ...utils, + ...platform$1 +}; + +function toURLEncodedForm(data, options) { + return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({ + visitor: function(value, key, path, helpers) { + if (platform.isNode && utils$1.isBuffer(value)) { + this.append(key, value.toString('base64')); + return false; + } + + return helpers.defaultVisitor.apply(this, arguments); + } + }, options)); +} + +/** + * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z'] + * + * @param {string} name - The name of the property to get. + * + * @returns An array of strings. + */ +function parsePropPath(name) { + // foo[x][y][z] + // foo.x.y.z + // foo-x-y-z + // foo x y z + return utils$1.matchAll(/\w+|\[(\w*)]/g, name).map(match => { + return match[0] === '[]' ? '' : match[1] || match[0]; + }); +} + +/** + * Convert an array to an object. + * + * @param {Array} arr - The array to convert to an object. + * + * @returns An object with the same keys and values as the array. + */ +function arrayToObject(arr) { + const obj = {}; + const keys = Object.keys(arr); + let i; + const len = keys.length; + let key; + for (i = 0; i < len; i++) { + key = keys[i]; + obj[key] = arr[key]; + } + return obj; +} + +/** + * It takes a FormData object and returns a JavaScript object + * + * @param {string} formData The FormData object to convert to JSON. + * + * @returns {Object | null} The converted object. + */ +function formDataToJSON(formData) { + function buildPath(path, value, target, index) { + let name = path[index++]; + + if (name === '__proto__') return true; + + const isNumericKey = Number.isFinite(+name); + const isLast = index >= path.length; + name = !name && utils$1.isArray(target) ? target.length : name; + + if (isLast) { + if (utils$1.hasOwnProp(target, name)) { + target[name] = [target[name], value]; + } else { + target[name] = value; + } + + return !isNumericKey; + } + + if (!target[name] || !utils$1.isObject(target[name])) { + target[name] = []; + } + + const result = buildPath(path, value, target[name], index); + + if (result && utils$1.isArray(target[name])) { + target[name] = arrayToObject(target[name]); + } + + return !isNumericKey; + } + + if (utils$1.isFormData(formData) && utils$1.isFunction(formData.entries)) { + const obj = {}; + + utils$1.forEachEntry(formData, (name, value) => { + buildPath(parsePropPath(name), value, obj, 0); + }); + + return obj; + } + + return null; +} + +/** + * It takes a string, tries to parse it, and if it fails, it returns the stringified version + * of the input + * + * @param {any} rawValue - The value to be stringified. + * @param {Function} parser - A function that parses a string into a JavaScript object. + * @param {Function} encoder - A function that takes a value and returns a string. + * + * @returns {string} A stringified version of the rawValue. + */ +function stringifySafely(rawValue, parser, encoder) { + if (utils$1.isString(rawValue)) { + try { + (parser || JSON.parse)(rawValue); + return utils$1.trim(rawValue); + } catch (e) { + if (e.name !== 'SyntaxError') { + throw e; + } + } + } + + return (encoder || JSON.stringify)(rawValue); +} + +const defaults = { + + transitional: transitionalDefaults, + + adapter: ['xhr', 'http', 'fetch'], + + transformRequest: [function transformRequest(data, headers) { + const contentType = headers.getContentType() || ''; + const hasJSONContentType = contentType.indexOf('application/json') > -1; + const isObjectPayload = utils$1.isObject(data); + + if (isObjectPayload && utils$1.isHTMLForm(data)) { + data = new FormData(data); + } + + const isFormData = utils$1.isFormData(data); + + if (isFormData) { + return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data; + } + + if (utils$1.isArrayBuffer(data) || + utils$1.isBuffer(data) || + utils$1.isStream(data) || + utils$1.isFile(data) || + utils$1.isBlob(data) || + utils$1.isReadableStream(data) + ) { + return data; + } + if (utils$1.isArrayBufferView(data)) { + return data.buffer; + } + if (utils$1.isURLSearchParams(data)) { + headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false); + return data.toString(); + } + + let isFileList; + + if (isObjectPayload) { + if (contentType.indexOf('application/x-www-form-urlencoded') > -1) { + return toURLEncodedForm(data, this.formSerializer).toString(); + } + + if ((isFileList = utils$1.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) { + const _FormData = this.env && this.env.FormData; + + return toFormData( + isFileList ? {'files[]': data} : data, + _FormData && new _FormData(), + this.formSerializer + ); + } + } + + if (isObjectPayload || hasJSONContentType ) { + headers.setContentType('application/json', false); + return stringifySafely(data); + } + + return data; + }], + + transformResponse: [function transformResponse(data) { + const transitional = this.transitional || defaults.transitional; + const forcedJSONParsing = transitional && transitional.forcedJSONParsing; + const JSONRequested = this.responseType === 'json'; + + if (utils$1.isResponse(data) || utils$1.isReadableStream(data)) { + return data; + } + + if (data && utils$1.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) { + const silentJSONParsing = transitional && transitional.silentJSONParsing; + const strictJSONParsing = !silentJSONParsing && JSONRequested; + + try { + return JSON.parse(data); + } catch (e) { + if (strictJSONParsing) { + if (e.name === 'SyntaxError') { + throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response); + } + throw e; + } + } + } + + return data; + }], + + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + + maxContentLength: -1, + maxBodyLength: -1, + + env: { + FormData: platform.classes.FormData, + Blob: platform.classes.Blob + }, + + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + }, + + headers: { + common: { + 'Accept': 'application/json, text/plain, */*', + 'Content-Type': undefined + } + } +}; + +utils$1.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => { + defaults.headers[method] = {}; +}); + +var defaults$1 = defaults; + +// RawAxiosHeaders whose duplicates are ignored by node +// c.f. https://nodejs.org/api/http.html#http_message_headers +const ignoreDuplicateOf = utils$1.toObjectSet([ + 'age', 'authorization', 'content-length', 'content-type', 'etag', + 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', + 'last-modified', 'location', 'max-forwards', 'proxy-authorization', + 'referer', 'retry-after', 'user-agent' +]); + +/** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} rawHeaders Headers needing to be parsed + * + * @returns {Object} Headers parsed into an object + */ +var parseHeaders = rawHeaders => { + const parsed = {}; + let key; + let val; + let i; + + rawHeaders && rawHeaders.split('\n').forEach(function parser(line) { + i = line.indexOf(':'); + key = line.substring(0, i).trim().toLowerCase(); + val = line.substring(i + 1).trim(); + + if (!key || (parsed[key] && ignoreDuplicateOf[key])) { + return; + } + + if (key === 'set-cookie') { + if (parsed[key]) { + parsed[key].push(val); + } else { + parsed[key] = [val]; + } + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + }); + + return parsed; +}; + +const $internals = Symbol('internals'); + +function normalizeHeader(header) { + return header && String(header).trim().toLowerCase(); +} + +function normalizeValue(value) { + if (value === false || value == null) { + return value; + } + + return utils$1.isArray(value) ? value.map(normalizeValue) : String(value); +} + +function parseTokens(str) { + const tokens = Object.create(null); + const tokensRE = /([^\s,;=]+)\s*(?:=\s*([^,;]+))?/g; + let match; + + while ((match = tokensRE.exec(str))) { + tokens[match[1]] = match[2]; + } + + return tokens; +} + +const isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim()); + +function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) { + if (utils$1.isFunction(filter)) { + return filter.call(this, value, header); + } + + if (isHeaderNameFilter) { + value = header; + } + + if (!utils$1.isString(value)) return; + + if (utils$1.isString(filter)) { + return value.indexOf(filter) !== -1; + } + + if (utils$1.isRegExp(filter)) { + return filter.test(value); + } +} + +function formatHeader(header) { + return header.trim() + .toLowerCase().replace(/([a-z\d])(\w*)/g, (w, char, str) => { + return char.toUpperCase() + str; + }); +} + +function buildAccessors(obj, header) { + const accessorName = utils$1.toCamelCase(' ' + header); + + ['get', 'set', 'has'].forEach(methodName => { + Object.defineProperty(obj, methodName + accessorName, { + value: function(arg1, arg2, arg3) { + return this[methodName].call(this, header, arg1, arg2, arg3); + }, + configurable: true + }); + }); +} + +class AxiosHeaders { + constructor(headers) { + headers && this.set(headers); + } + + set(header, valueOrRewrite, rewrite) { + const self = this; + + function setHeader(_value, _header, _rewrite) { + const lHeader = normalizeHeader(_header); + + if (!lHeader) { + throw new Error('header name must be a non-empty string'); + } + + const key = utils$1.findKey(self, lHeader); + + if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) { + self[key || _header] = normalizeValue(_value); + } + } + + const setHeaders = (headers, _rewrite) => + utils$1.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite)); + + if (utils$1.isPlainObject(header) || header instanceof this.constructor) { + setHeaders(header, valueOrRewrite); + } else if(utils$1.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) { + setHeaders(parseHeaders(header), valueOrRewrite); + } else if (utils$1.isObject(header) && utils$1.isIterable(header)) { + let obj = {}, dest, key; + for (const entry of header) { + if (!utils$1.isArray(entry)) { + throw TypeError('Object iterator must return a key-value pair'); + } + + obj[key = entry[0]] = (dest = obj[key]) ? + (utils$1.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1]; + } + + setHeaders(obj, valueOrRewrite); + } else { + header != null && setHeader(valueOrRewrite, header, rewrite); + } + + return this; + } + + get(header, parser) { + header = normalizeHeader(header); + + if (header) { + const key = utils$1.findKey(this, header); + + if (key) { + const value = this[key]; + + if (!parser) { + return value; + } + + if (parser === true) { + return parseTokens(value); + } + + if (utils$1.isFunction(parser)) { + return parser.call(this, value, key); + } + + if (utils$1.isRegExp(parser)) { + return parser.exec(value); + } + + throw new TypeError('parser must be boolean|regexp|function'); + } + } + } + + has(header, matcher) { + header = normalizeHeader(header); + + if (header) { + const key = utils$1.findKey(this, header); + + return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher))); + } + + return false; + } + + delete(header, matcher) { + const self = this; + let deleted = false; + + function deleteHeader(_header) { + _header = normalizeHeader(_header); + + if (_header) { + const key = utils$1.findKey(self, _header); + + if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) { + delete self[key]; + + deleted = true; + } + } + } + + if (utils$1.isArray(header)) { + header.forEach(deleteHeader); + } else { + deleteHeader(header); + } + + return deleted; + } + + clear(matcher) { + const keys = Object.keys(this); + let i = keys.length; + let deleted = false; + + while (i--) { + const key = keys[i]; + if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) { + delete this[key]; + deleted = true; + } + } + + return deleted; + } + + normalize(format) { + const self = this; + const headers = {}; + + utils$1.forEach(this, (value, header) => { + const key = utils$1.findKey(headers, header); + + if (key) { + self[key] = normalizeValue(value); + delete self[header]; + return; + } + + const normalized = format ? formatHeader(header) : String(header).trim(); + + if (normalized !== header) { + delete self[header]; + } + + self[normalized] = normalizeValue(value); + + headers[normalized] = true; + }); + + return this; + } + + concat(...targets) { + return this.constructor.concat(this, ...targets); + } + + toJSON(asStrings) { + const obj = Object.create(null); + + utils$1.forEach(this, (value, header) => { + value != null && value !== false && (obj[header] = asStrings && utils$1.isArray(value) ? value.join(', ') : value); + }); + + return obj; + } + + [Symbol.iterator]() { + return Object.entries(this.toJSON())[Symbol.iterator](); + } + + toString() { + return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\n'); + } + + getSetCookie() { + return this.get("set-cookie") || []; + } + + get [Symbol.toStringTag]() { + return 'AxiosHeaders'; + } + + static from(thing) { + return thing instanceof this ? thing : new this(thing); + } + + static concat(first, ...targets) { + const computed = new this(first); + + targets.forEach((target) => computed.set(target)); + + return computed; + } + + static accessor(header) { + const internals = this[$internals] = (this[$internals] = { + accessors: {} + }); + + const accessors = internals.accessors; + const prototype = this.prototype; + + function defineAccessor(_header) { + const lHeader = normalizeHeader(_header); + + if (!accessors[lHeader]) { + buildAccessors(prototype, _header); + accessors[lHeader] = true; + } + } + + utils$1.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header); + + return this; + } +} + +AxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']); + +// reserved names hotfix +utils$1.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => { + let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set` + return { + get: () => value, + set(headerValue) { + this[mapped] = headerValue; + } + } +}); + +utils$1.freezeMethods(AxiosHeaders); + +var AxiosHeaders$1 = AxiosHeaders; + +/** + * Transform the data for a request or a response + * + * @param {Array|Function} fns A single function or Array of functions + * @param {?Object} response The response object + * + * @returns {*} The resulting transformed data + */ +function transformData(fns, response) { + const config = this || defaults$1; + const context = response || config; + const headers = AxiosHeaders$1.from(context.headers); + let data = context.data; + + utils$1.forEach(fns, function transform(fn) { + data = fn.call(config, data, headers.normalize(), response ? response.status : undefined); + }); + + headers.normalize(); + + return data; +} + +function isCancel(value) { + return !!(value && value.__CANCEL__); +} + +/** + * A `CanceledError` is an object that is thrown when an operation is canceled. + * + * @param {string=} message The message. + * @param {Object=} config The config. + * @param {Object=} request The request. + * + * @returns {CanceledError} The created error. + */ +function CanceledError(message, config, request) { + // eslint-disable-next-line no-eq-null,eqeqeq + AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request); + this.name = 'CanceledError'; +} + +utils$1.inherits(CanceledError, AxiosError, { + __CANCEL__: true +}); + +/** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + * + * @returns {object} The response. + */ +function settle(resolve, reject, response) { + const validateStatus = response.config.validateStatus; + if (!response.status || !validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(new AxiosError( + 'Request failed with status code ' + response.status, + [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4], + response.config, + response.request, + response + )); + } +} + +function parseProtocol(url) { + const match = /^([-+\w]{1,25})(:?\/\/|:)/.exec(url); + return match && match[1] || ''; +} + +/** + * Calculate data maxRate + * @param {Number} [samplesCount= 10] + * @param {Number} [min= 1000] + * @returns {Function} + */ +function speedometer(samplesCount, min) { + samplesCount = samplesCount || 10; + const bytes = new Array(samplesCount); + const timestamps = new Array(samplesCount); + let head = 0; + let tail = 0; + let firstSampleTS; + + min = min !== undefined ? min : 1000; + + return function push(chunkLength) { + const now = Date.now(); + + const startedAt = timestamps[tail]; + + if (!firstSampleTS) { + firstSampleTS = now; + } + + bytes[head] = chunkLength; + timestamps[head] = now; + + let i = tail; + let bytesCount = 0; + + while (i !== head) { + bytesCount += bytes[i++]; + i = i % samplesCount; + } + + head = (head + 1) % samplesCount; + + if (head === tail) { + tail = (tail + 1) % samplesCount; + } + + if (now - firstSampleTS < min) { + return; + } + + const passed = startedAt && now - startedAt; + + return passed ? Math.round(bytesCount * 1000 / passed) : undefined; + }; +} + +/** + * Throttle decorator + * @param {Function} fn + * @param {Number} freq + * @return {Function} + */ +function throttle(fn, freq) { + let timestamp = 0; + let threshold = 1000 / freq; + let lastArgs; + let timer; + + const invoke = (args, now = Date.now()) => { + timestamp = now; + lastArgs = null; + if (timer) { + clearTimeout(timer); + timer = null; + } + fn.apply(null, args); + }; + + const throttled = (...args) => { + const now = Date.now(); + const passed = now - timestamp; + if ( passed >= threshold) { + invoke(args, now); + } else { + lastArgs = args; + if (!timer) { + timer = setTimeout(() => { + timer = null; + invoke(lastArgs); + }, threshold - passed); + } + } + }; + + const flush = () => lastArgs && invoke(lastArgs); + + return [throttled, flush]; +} + +const progressEventReducer = (listener, isDownloadStream, freq = 3) => { + let bytesNotified = 0; + const _speedometer = speedometer(50, 250); + + return throttle(e => { + const loaded = e.loaded; + const total = e.lengthComputable ? e.total : undefined; + const progressBytes = loaded - bytesNotified; + const rate = _speedometer(progressBytes); + const inRange = loaded <= total; + + bytesNotified = loaded; + + const data = { + loaded, + total, + progress: total ? (loaded / total) : undefined, + bytes: progressBytes, + rate: rate ? rate : undefined, + estimated: rate && total && inRange ? (total - loaded) / rate : undefined, + event: e, + lengthComputable: total != null, + [isDownloadStream ? 'download' : 'upload']: true + }; + + listener(data); + }, freq); +}; + +const progressEventDecorator = (total, throttled) => { + const lengthComputable = total != null; + + return [(loaded) => throttled[0]({ + lengthComputable, + total, + loaded + }), throttled[1]]; +}; + +const asyncDecorator = (fn) => (...args) => utils$1.asap(() => fn(...args)); + +var isURLSameOrigin = platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => { + url = new URL(url, platform.origin); + + return ( + origin.protocol === url.protocol && + origin.host === url.host && + (isMSIE || origin.port === url.port) + ); +})( + new URL(platform.origin), + platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent) +) : () => true; + +var cookies = platform.hasStandardBrowserEnv ? + + // Standard browser envs support document.cookie + { + write(name, value, expires, path, domain, secure) { + const cookie = [name + '=' + encodeURIComponent(value)]; + + utils$1.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString()); + + utils$1.isString(path) && cookie.push('path=' + path); + + utils$1.isString(domain) && cookie.push('domain=' + domain); + + secure === true && cookie.push('secure'); + + document.cookie = cookie.join('; '); + }, + + read(name) { + const match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return (match ? decodeURIComponent(match[3]) : null); + }, + + remove(name) { + this.write(name, '', Date.now() - 86400000); + } + } + + : + + // Non-standard browser env (web workers, react-native) lack needed support. + { + write() {}, + read() { + return null; + }, + remove() {} + }; + +/** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ +function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url); +} + +/** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * + * @returns {string} The combined URL + */ +function combineURLs(baseURL, relativeURL) { + return relativeURL + ? baseURL.replace(/\/?\/$/, '') + '/' + relativeURL.replace(/^\/+/, '') + : baseURL; +} + +/** + * Creates a new URL by combining the baseURL with the requestedURL, + * only when the requestedURL is not already an absolute URL. + * If the requestURL is absolute, this function returns the requestedURL untouched. + * + * @param {string} baseURL The base URL + * @param {string} requestedURL Absolute or relative URL to combine + * + * @returns {string} The combined full path + */ +function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) { + let isRelativeUrl = !isAbsoluteURL(requestedURL); + if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) { + return combineURLs(baseURL, requestedURL); + } + return requestedURL; +} + +const headersToObject = (thing) => thing instanceof AxiosHeaders$1 ? { ...thing } : thing; + +/** + * Config-specific merge-function which creates a new config-object + * by merging two configuration objects together. + * + * @param {Object} config1 + * @param {Object} config2 + * + * @returns {Object} New object resulting from merging config2 to config1 + */ +function mergeConfig(config1, config2) { + // eslint-disable-next-line no-param-reassign + config2 = config2 || {}; + const config = {}; + + function getMergedValue(target, source, prop, caseless) { + if (utils$1.isPlainObject(target) && utils$1.isPlainObject(source)) { + return utils$1.merge.call({caseless}, target, source); + } else if (utils$1.isPlainObject(source)) { + return utils$1.merge({}, source); + } else if (utils$1.isArray(source)) { + return source.slice(); + } + return source; + } + + // eslint-disable-next-line consistent-return + function mergeDeepProperties(a, b, prop , caseless) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(a, b, prop , caseless); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a, prop , caseless); + } + } + + // eslint-disable-next-line consistent-return + function valueFromConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } + } + + // eslint-disable-next-line consistent-return + function defaultToConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a); + } + } + + // eslint-disable-next-line consistent-return + function mergeDirectKeys(a, b, prop) { + if (prop in config2) { + return getMergedValue(a, b); + } else if (prop in config1) { + return getMergedValue(undefined, a); + } + } + + const mergeMap = { + url: valueFromConfig2, + method: valueFromConfig2, + data: valueFromConfig2, + baseURL: defaultToConfig2, + transformRequest: defaultToConfig2, + transformResponse: defaultToConfig2, + paramsSerializer: defaultToConfig2, + timeout: defaultToConfig2, + timeoutMessage: defaultToConfig2, + withCredentials: defaultToConfig2, + withXSRFToken: defaultToConfig2, + adapter: defaultToConfig2, + responseType: defaultToConfig2, + xsrfCookieName: defaultToConfig2, + xsrfHeaderName: defaultToConfig2, + onUploadProgress: defaultToConfig2, + onDownloadProgress: defaultToConfig2, + decompress: defaultToConfig2, + maxContentLength: defaultToConfig2, + maxBodyLength: defaultToConfig2, + beforeRedirect: defaultToConfig2, + transport: defaultToConfig2, + httpAgent: defaultToConfig2, + httpsAgent: defaultToConfig2, + cancelToken: defaultToConfig2, + socketPath: defaultToConfig2, + responseEncoding: defaultToConfig2, + validateStatus: mergeDirectKeys, + headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true) + }; + + utils$1.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) { + const merge = mergeMap[prop] || mergeDeepProperties; + const configValue = merge(config1[prop], config2[prop], prop); + (utils$1.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue); + }); + + return config; +} + +var resolveConfig = (config) => { + const newConfig = mergeConfig({}, config); + + let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig; + + newConfig.headers = headers = AxiosHeaders$1.from(headers); + + newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer); + + // HTTP basic authentication + if (auth) { + headers.set('Authorization', 'Basic ' + + btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : '')) + ); + } + + let contentType; + + if (utils$1.isFormData(data)) { + if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) { + headers.setContentType(undefined); // Let the browser set it + } else if ((contentType = headers.getContentType()) !== false) { + // fix semicolon duplication issue for ReactNative FormData implementation + const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : []; + headers.setContentType([type || 'multipart/form-data', ...tokens].join('; ')); + } + } + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + + if (platform.hasStandardBrowserEnv) { + withXSRFToken && utils$1.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig)); + + if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) { + // Add xsrf header + const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName); + + if (xsrfValue) { + headers.set(xsrfHeaderName, xsrfValue); + } + } + } + + return newConfig; +}; + +const isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined'; + +var xhrAdapter = isXHRAdapterSupported && function (config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + const _config = resolveConfig(config); + let requestData = _config.data; + const requestHeaders = AxiosHeaders$1.from(_config.headers).normalize(); + let {responseType, onUploadProgress, onDownloadProgress} = _config; + let onCanceled; + let uploadThrottled, downloadThrottled; + let flushUpload, flushDownload; + + function done() { + flushUpload && flushUpload(); // flush events + flushDownload && flushDownload(); // flush events + + _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled); + + _config.signal && _config.signal.removeEventListener('abort', onCanceled); + } + + let request = new XMLHttpRequest(); + + request.open(_config.method.toUpperCase(), _config.url, true); + + // Set the request timeout in MS + request.timeout = _config.timeout; + + function onloadend() { + if (!request) { + return; + } + // Prepare the response + const responseHeaders = AxiosHeaders$1.from( + 'getAllResponseHeaders' in request && request.getAllResponseHeaders() + ); + const responseData = !responseType || responseType === 'text' || responseType === 'json' ? + request.responseText : request.response; + const response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config, + request + }; + + settle(function _resolve(value) { + resolve(value); + done(); + }, function _reject(err) { + reject(err); + done(); + }, response); + + // Clean up request + request = null; + } + + if ('onloadend' in request) { + // Use onloadend if available + request.onloadend = onloadend; + } else { + // Listen for ready state to emulate onloadend + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + // readystate handler is calling before onerror or ontimeout handlers, + // so we should call onloadend on the next 'tick' + setTimeout(onloadend); + }; + } + + // Handle browser request cancellation (as opposed to a manual cancellation) + request.onabort = function handleAbort() { + if (!request) { + return; + } + + reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request)); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded'; + const transitional = _config.transitional || transitionalDefaults; + if (_config.timeoutErrorMessage) { + timeoutErrorMessage = _config.timeoutErrorMessage; + } + reject(new AxiosError( + timeoutErrorMessage, + transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, + config, + request)); + + // Clean up request + request = null; + }; + + // Remove Content-Type if data is undefined + requestData === undefined && requestHeaders.setContentType(null); + + // Add headers to the request + if ('setRequestHeader' in request) { + utils$1.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) { + request.setRequestHeader(key, val); + }); + } + + // Add withCredentials to request if needed + if (!utils$1.isUndefined(_config.withCredentials)) { + request.withCredentials = !!_config.withCredentials; + } + + // Add responseType to request if needed + if (responseType && responseType !== 'json') { + request.responseType = _config.responseType; + } + + // Handle progress if needed + if (onDownloadProgress) { + ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true)); + request.addEventListener('progress', downloadThrottled); + } + + // Not all browsers support upload events + if (onUploadProgress && request.upload) { + ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress)); + + request.upload.addEventListener('progress', uploadThrottled); + + request.upload.addEventListener('loadend', flushUpload); + } + + if (_config.cancelToken || _config.signal) { + // Handle cancellation + // eslint-disable-next-line func-names + onCanceled = cancel => { + if (!request) { + return; + } + reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel); + request.abort(); + request = null; + }; + + _config.cancelToken && _config.cancelToken.subscribe(onCanceled); + if (_config.signal) { + _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled); + } + } + + const protocol = parseProtocol(_config.url); + + if (protocol && platform.protocols.indexOf(protocol) === -1) { + reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config)); + return; + } + + + // Send the request + request.send(requestData || null); + }); +}; + +const composeSignals = (signals, timeout) => { + const {length} = (signals = signals ? signals.filter(Boolean) : []); + + if (timeout || length) { + let controller = new AbortController(); + + let aborted; + + const onabort = function (reason) { + if (!aborted) { + aborted = true; + unsubscribe(); + const err = reason instanceof Error ? reason : this.reason; + controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err)); + } + }; + + let timer = timeout && setTimeout(() => { + timer = null; + onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT)); + }, timeout); + + const unsubscribe = () => { + if (signals) { + timer && clearTimeout(timer); + timer = null; + signals.forEach(signal => { + signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort); + }); + signals = null; + } + }; + + signals.forEach((signal) => signal.addEventListener('abort', onabort)); + + const {signal} = controller; + + signal.unsubscribe = () => utils$1.asap(unsubscribe); + + return signal; + } +}; + +var composeSignals$1 = composeSignals; + +const streamChunk = function* (chunk, chunkSize) { + let len = chunk.byteLength; + + if (!chunkSize || len < chunkSize) { + yield chunk; + return; + } + + let pos = 0; + let end; + + while (pos < len) { + end = pos + chunkSize; + yield chunk.slice(pos, end); + pos = end; + } +}; + +const readBytes = async function* (iterable, chunkSize) { + for await (const chunk of readStream(iterable)) { + yield* streamChunk(chunk, chunkSize); + } +}; + +const readStream = async function* (stream) { + if (stream[Symbol.asyncIterator]) { + yield* stream; + return; + } + + const reader = stream.getReader(); + try { + for (;;) { + const {done, value} = await reader.read(); + if (done) { + break; + } + yield value; + } + } finally { + await reader.cancel(); + } +}; + +const trackStream = (stream, chunkSize, onProgress, onFinish) => { + const iterator = readBytes(stream, chunkSize); + + let bytes = 0; + let done; + let _onFinish = (e) => { + if (!done) { + done = true; + onFinish && onFinish(e); + } + }; + + return new ReadableStream({ + async pull(controller) { + try { + const {done, value} = await iterator.next(); + + if (done) { + _onFinish(); + controller.close(); + return; + } + + let len = value.byteLength; + if (onProgress) { + let loadedBytes = bytes += len; + onProgress(loadedBytes); + } + controller.enqueue(new Uint8Array(value)); + } catch (err) { + _onFinish(err); + throw err; + } + }, + cancel(reason) { + _onFinish(reason); + return iterator.return(); + } + }, { + highWaterMark: 2 + }) +}; + +const isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function'; +const isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function'; + +// used only inside the fetch adapter +const encodeText = isFetchSupported && (typeof TextEncoder === 'function' ? + ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) : + async (str) => new Uint8Array(await new Response(str).arrayBuffer()) +); + +const test = (fn, ...args) => { + try { + return !!fn(...args); + } catch (e) { + return false + } +}; + +const supportsRequestStream = isReadableStreamSupported && test(() => { + let duplexAccessed = false; + + const hasContentType = new Request(platform.origin, { + body: new ReadableStream(), + method: 'POST', + get duplex() { + duplexAccessed = true; + return 'half'; + }, + }).headers.has('Content-Type'); + + return duplexAccessed && !hasContentType; +}); + +const DEFAULT_CHUNK_SIZE = 64 * 1024; + +const supportsResponseStream = isReadableStreamSupported && + test(() => utils$1.isReadableStream(new Response('').body)); + + +const resolvers = { + stream: supportsResponseStream && ((res) => res.body) +}; + +isFetchSupported && (((res) => { + ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => { + !resolvers[type] && (resolvers[type] = utils$1.isFunction(res[type]) ? (res) => res[type]() : + (_, config) => { + throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config); + }); + }); +})(new Response)); + +const getBodyLength = async (body) => { + if (body == null) { + return 0; + } + + if(utils$1.isBlob(body)) { + return body.size; + } + + if(utils$1.isSpecCompliantForm(body)) { + const _request = new Request(platform.origin, { + method: 'POST', + body, + }); + return (await _request.arrayBuffer()).byteLength; + } + + if(utils$1.isArrayBufferView(body) || utils$1.isArrayBuffer(body)) { + return body.byteLength; + } + + if(utils$1.isURLSearchParams(body)) { + body = body + ''; + } + + if(utils$1.isString(body)) { + return (await encodeText(body)).byteLength; + } +}; + +const resolveBodyLength = async (headers, body) => { + const length = utils$1.toFiniteNumber(headers.getContentLength()); + + return length == null ? getBodyLength(body) : length; +}; + +var fetchAdapter = isFetchSupported && (async (config) => { + let { + url, + method, + data, + signal, + cancelToken, + timeout, + onDownloadProgress, + onUploadProgress, + responseType, + headers, + withCredentials = 'same-origin', + fetchOptions + } = resolveConfig(config); + + responseType = responseType ? (responseType + '').toLowerCase() : 'text'; + + let composedSignal = composeSignals$1([signal, cancelToken && cancelToken.toAbortSignal()], timeout); + + let request; + + const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => { + composedSignal.unsubscribe(); + }); + + let requestContentLength; + + try { + if ( + onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' && + (requestContentLength = await resolveBodyLength(headers, data)) !== 0 + ) { + let _request = new Request(url, { + method: 'POST', + body: data, + duplex: "half" + }); + + let contentTypeHeader; + + if (utils$1.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) { + headers.setContentType(contentTypeHeader); + } + + if (_request.body) { + const [onProgress, flush] = progressEventDecorator( + requestContentLength, + progressEventReducer(asyncDecorator(onUploadProgress)) + ); + + data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush); + } + } + + if (!utils$1.isString(withCredentials)) { + withCredentials = withCredentials ? 'include' : 'omit'; + } + + // Cloudflare Workers throws when credentials are defined + // see https://github.com/cloudflare/workerd/issues/902 + const isCredentialsSupported = "credentials" in Request.prototype; + request = new Request(url, { + ...fetchOptions, + signal: composedSignal, + method: method.toUpperCase(), + headers: headers.normalize().toJSON(), + body: data, + duplex: "half", + credentials: isCredentialsSupported ? withCredentials : undefined + }); + + let response = await fetch(request, fetchOptions); + + const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response'); + + if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) { + const options = {}; + + ['status', 'statusText', 'headers'].forEach(prop => { + options[prop] = response[prop]; + }); + + const responseContentLength = utils$1.toFiniteNumber(response.headers.get('content-length')); + + const [onProgress, flush] = onDownloadProgress && progressEventDecorator( + responseContentLength, + progressEventReducer(asyncDecorator(onDownloadProgress), true) + ) || []; + + response = new Response( + trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => { + flush && flush(); + unsubscribe && unsubscribe(); + }), + options + ); + } + + responseType = responseType || 'text'; + + let responseData = await resolvers[utils$1.findKey(resolvers, responseType) || 'text'](response, config); + + !isStreamResponse && unsubscribe && unsubscribe(); + + return await new Promise((resolve, reject) => { + settle(resolve, reject, { + data: responseData, + headers: AxiosHeaders$1.from(response.headers), + status: response.status, + statusText: response.statusText, + config, + request + }); + }) + } catch (err) { + unsubscribe && unsubscribe(); + + if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) { + throw Object.assign( + new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request), + { + cause: err.cause || err + } + ) + } + + throw AxiosError.from(err, err && err.code, config, request); + } +}); + +const knownAdapters = { + http: httpAdapter, + xhr: xhrAdapter, + fetch: fetchAdapter +}; + +utils$1.forEach(knownAdapters, (fn, value) => { + if (fn) { + try { + Object.defineProperty(fn, 'name', {value}); + } catch (e) { + // eslint-disable-next-line no-empty + } + Object.defineProperty(fn, 'adapterName', {value}); + } +}); + +const renderReason = (reason) => `- ${reason}`; + +const isResolvedHandle = (adapter) => utils$1.isFunction(adapter) || adapter === null || adapter === false; + +var adapters = { + getAdapter: (adapters) => { + adapters = utils$1.isArray(adapters) ? adapters : [adapters]; + + const {length} = adapters; + let nameOrAdapter; + let adapter; + + const rejectedReasons = {}; + + for (let i = 0; i < length; i++) { + nameOrAdapter = adapters[i]; + let id; + + adapter = nameOrAdapter; + + if (!isResolvedHandle(nameOrAdapter)) { + adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()]; + + if (adapter === undefined) { + throw new AxiosError(`Unknown adapter '${id}'`); + } + } + + if (adapter) { + break; + } + + rejectedReasons[id || '#' + i] = adapter; + } + + if (!adapter) { + + const reasons = Object.entries(rejectedReasons) + .map(([id, state]) => `adapter ${id} ` + + (state === false ? 'is not supported by the environment' : 'is not available in the build') + ); + + let s = length ? + (reasons.length > 1 ? 'since :\n' + reasons.map(renderReason).join('\n') : ' ' + renderReason(reasons[0])) : + 'as no adapter specified'; + + throw new AxiosError( + `There is no suitable adapter to dispatch the request ` + s, + 'ERR_NOT_SUPPORT' + ); + } + + return adapter; + }, + adapters: knownAdapters +}; + +/** + * Throws a `CanceledError` if cancellation has been requested. + * + * @param {Object} config The config that is to be used for the request + * + * @returns {void} + */ +function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } + + if (config.signal && config.signal.aborted) { + throw new CanceledError(null, config); + } +} + +/** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * + * @returns {Promise} The Promise to be fulfilled + */ +function dispatchRequest(config) { + throwIfCancellationRequested(config); + + config.headers = AxiosHeaders$1.from(config.headers); + + // Transform request data + config.data = transformData.call( + config, + config.transformRequest + ); + + if (['post', 'put', 'patch'].indexOf(config.method) !== -1) { + config.headers.setContentType('application/x-www-form-urlencoded', false); + } + + const adapter = adapters.getAdapter(config.adapter || defaults$1.adapter); + + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData.call( + config, + config.transformResponse, + response + ); + + response.headers = AxiosHeaders$1.from(response.headers); + + return response; + }, function onAdapterRejection(reason) { + if (!isCancel(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData.call( + config, + config.transformResponse, + reason.response + ); + reason.response.headers = AxiosHeaders$1.from(reason.response.headers); + } + } + + return Promise.reject(reason); + }); +} + +const VERSION = "1.10.0"; + +const validators$1 = {}; + +// eslint-disable-next-line func-names +['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => { + validators$1[type] = function validator(thing) { + return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type; + }; +}); + +const deprecatedWarnings = {}; + +/** + * Transitional option validator + * + * @param {function|boolean?} validator - set to false if the transitional option has been removed + * @param {string?} version - deprecated version / removed since version + * @param {string?} message - some message with additional info + * + * @returns {function} + */ +validators$1.transitional = function transitional(validator, version, message) { + function formatMessage(opt, desc) { + return '[Axios v' + VERSION + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : ''); + } + + // eslint-disable-next-line func-names + return (value, opt, opts) => { + if (validator === false) { + throw new AxiosError( + formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')), + AxiosError.ERR_DEPRECATED + ); + } + + if (version && !deprecatedWarnings[opt]) { + deprecatedWarnings[opt] = true; + // eslint-disable-next-line no-console + console.warn( + formatMessage( + opt, + ' has been deprecated since v' + version + ' and will be removed in the near future' + ) + ); + } + + return validator ? validator(value, opt, opts) : true; + }; +}; + +validators$1.spelling = function spelling(correctSpelling) { + return (value, opt) => { + // eslint-disable-next-line no-console + console.warn(`${opt} is likely a misspelling of ${correctSpelling}`); + return true; + } +}; + +/** + * Assert object's properties type + * + * @param {object} options + * @param {object} schema + * @param {boolean?} allowUnknown + * + * @returns {object} + */ + +function assertOptions(options, schema, allowUnknown) { + if (typeof options !== 'object') { + throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE); + } + const keys = Object.keys(options); + let i = keys.length; + while (i-- > 0) { + const opt = keys[i]; + const validator = schema[opt]; + if (validator) { + const value = options[opt]; + const result = value === undefined || validator(value, opt, options); + if (result !== true) { + throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE); + } + continue; + } + if (allowUnknown !== true) { + throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION); + } + } +} + +var validator = { + assertOptions, + validators: validators$1 +}; + +const validators = validator.validators; + +/** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + * + * @return {Axios} A new instance of Axios + */ +class Axios { + constructor(instanceConfig) { + this.defaults = instanceConfig || {}; + this.interceptors = { + request: new InterceptorManager$1(), + response: new InterceptorManager$1() + }; + } + + /** + * Dispatch a request + * + * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults) + * @param {?Object} config + * + * @returns {Promise} The Promise to be fulfilled + */ + async request(configOrUrl, config) { + try { + return await this._request(configOrUrl, config); + } catch (err) { + if (err instanceof Error) { + let dummy = {}; + + Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error()); + + // slice off the Error: ... line + const stack = dummy.stack ? dummy.stack.replace(/^.+\n/, '') : ''; + try { + if (!err.stack) { + err.stack = stack; + // match without the 2 top stack lines + } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\n.+\n/, ''))) { + err.stack += '\n' + stack; + } + } catch (e) { + // ignore the case where "stack" is an un-writable property + } + } + + throw err; + } + } + + _request(configOrUrl, config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof configOrUrl === 'string') { + config = config || {}; + config.url = configOrUrl; + } else { + config = configOrUrl || {}; + } + + config = mergeConfig(this.defaults, config); + + const {transitional, paramsSerializer, headers} = config; + + if (transitional !== undefined) { + validator.assertOptions(transitional, { + silentJSONParsing: validators.transitional(validators.boolean), + forcedJSONParsing: validators.transitional(validators.boolean), + clarifyTimeoutError: validators.transitional(validators.boolean) + }, false); + } + + if (paramsSerializer != null) { + if (utils$1.isFunction(paramsSerializer)) { + config.paramsSerializer = { + serialize: paramsSerializer + }; + } else { + validator.assertOptions(paramsSerializer, { + encode: validators.function, + serialize: validators.function + }, true); + } + } + + // Set config.allowAbsoluteUrls + if (config.allowAbsoluteUrls !== undefined) ; else if (this.defaults.allowAbsoluteUrls !== undefined) { + config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls; + } else { + config.allowAbsoluteUrls = true; + } + + validator.assertOptions(config, { + baseUrl: validators.spelling('baseURL'), + withXsrfToken: validators.spelling('withXSRFToken') + }, true); + + // Set config.method + config.method = (config.method || this.defaults.method || 'get').toLowerCase(); + + // Flatten headers + let contextHeaders = headers && utils$1.merge( + headers.common, + headers[config.method] + ); + + headers && utils$1.forEach( + ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], + (method) => { + delete headers[method]; + } + ); + + config.headers = AxiosHeaders$1.concat(contextHeaders, headers); + + // filter out skipped interceptors + const requestInterceptorChain = []; + let synchronousRequestInterceptors = true; + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) { + return; + } + + synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous; + + requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + + const responseInterceptorChain = []; + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected); + }); + + let promise; + let i = 0; + let len; + + if (!synchronousRequestInterceptors) { + const chain = [dispatchRequest.bind(this), undefined]; + chain.unshift.apply(chain, requestInterceptorChain); + chain.push.apply(chain, responseInterceptorChain); + len = chain.length; + + promise = Promise.resolve(config); + + while (i < len) { + promise = promise.then(chain[i++], chain[i++]); + } + + return promise; + } + + len = requestInterceptorChain.length; + + let newConfig = config; + + i = 0; + + while (i < len) { + const onFulfilled = requestInterceptorChain[i++]; + const onRejected = requestInterceptorChain[i++]; + try { + newConfig = onFulfilled(newConfig); + } catch (error) { + onRejected.call(this, error); + break; + } + } + + try { + promise = dispatchRequest.call(this, newConfig); + } catch (error) { + return Promise.reject(error); + } + + i = 0; + len = responseInterceptorChain.length; + + while (i < len) { + promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]); + } + + return promise; + } + + getUri(config) { + config = mergeConfig(this.defaults, config); + const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + return buildURL(fullPath, config.params, config.paramsSerializer); + } +} + +// Provide aliases for supported request methods +utils$1.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, config) { + return this.request(mergeConfig(config || {}, { + method, + url, + data: (config || {}).data + })); + }; +}); + +utils$1.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + + function generateHTTPMethod(isForm) { + return function httpMethod(url, data, config) { + return this.request(mergeConfig(config || {}, { + method, + headers: isForm ? { + 'Content-Type': 'multipart/form-data' + } : {}, + url, + data + })); + }; + } + + Axios.prototype[method] = generateHTTPMethod(); + + Axios.prototype[method + 'Form'] = generateHTTPMethod(true); +}); + +var Axios$1 = Axios; + +/** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @param {Function} executor The executor function. + * + * @returns {CancelToken} + */ +class CancelToken { + constructor(executor) { + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + + let resolvePromise; + + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + + const token = this; + + // eslint-disable-next-line func-names + this.promise.then(cancel => { + if (!token._listeners) return; + + let i = token._listeners.length; + + while (i-- > 0) { + token._listeners[i](cancel); + } + token._listeners = null; + }); + + // eslint-disable-next-line func-names + this.promise.then = onfulfilled => { + let _resolve; + // eslint-disable-next-line func-names + const promise = new Promise(resolve => { + token.subscribe(resolve); + _resolve = resolve; + }).then(onfulfilled); + + promise.cancel = function reject() { + token.unsubscribe(_resolve); + }; + + return promise; + }; + + executor(function cancel(message, config, request) { + if (token.reason) { + // Cancellation has already been requested + return; + } + + token.reason = new CanceledError(message, config, request); + resolvePromise(token.reason); + }); + } + + /** + * Throws a `CanceledError` if cancellation has been requested. + */ + throwIfRequested() { + if (this.reason) { + throw this.reason; + } + } + + /** + * Subscribe to the cancel signal + */ + + subscribe(listener) { + if (this.reason) { + listener(this.reason); + return; + } + + if (this._listeners) { + this._listeners.push(listener); + } else { + this._listeners = [listener]; + } + } + + /** + * Unsubscribe from the cancel signal + */ + + unsubscribe(listener) { + if (!this._listeners) { + return; + } + const index = this._listeners.indexOf(listener); + if (index !== -1) { + this._listeners.splice(index, 1); + } + } + + toAbortSignal() { + const controller = new AbortController(); + + const abort = (err) => { + controller.abort(err); + }; + + this.subscribe(abort); + + controller.signal.unsubscribe = () => this.unsubscribe(abort); + + return controller.signal; + } + + /** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ + static source() { + let cancel; + const token = new CancelToken(function executor(c) { + cancel = c; + }); + return { + token, + cancel + }; + } +} + +var CancelToken$1 = CancelToken; + +/** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * + * @returns {Function} + */ +function spread(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; +} + +/** + * Determines whether the payload is an error thrown by Axios + * + * @param {*} payload The value to test + * + * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false + */ +function isAxiosError(payload) { + return utils$1.isObject(payload) && (payload.isAxiosError === true); +} + +const HttpStatusCode = { + Continue: 100, + SwitchingProtocols: 101, + Processing: 102, + EarlyHints: 103, + Ok: 200, + Created: 201, + Accepted: 202, + NonAuthoritativeInformation: 203, + NoContent: 204, + ResetContent: 205, + PartialContent: 206, + MultiStatus: 207, + AlreadyReported: 208, + ImUsed: 226, + MultipleChoices: 300, + MovedPermanently: 301, + Found: 302, + SeeOther: 303, + NotModified: 304, + UseProxy: 305, + Unused: 306, + TemporaryRedirect: 307, + PermanentRedirect: 308, + BadRequest: 400, + Unauthorized: 401, + PaymentRequired: 402, + Forbidden: 403, + NotFound: 404, + MethodNotAllowed: 405, + NotAcceptable: 406, + ProxyAuthenticationRequired: 407, + RequestTimeout: 408, + Conflict: 409, + Gone: 410, + LengthRequired: 411, + PreconditionFailed: 412, + PayloadTooLarge: 413, + UriTooLong: 414, + UnsupportedMediaType: 415, + RangeNotSatisfiable: 416, + ExpectationFailed: 417, + ImATeapot: 418, + MisdirectedRequest: 421, + UnprocessableEntity: 422, + Locked: 423, + FailedDependency: 424, + TooEarly: 425, + UpgradeRequired: 426, + PreconditionRequired: 428, + TooManyRequests: 429, + RequestHeaderFieldsTooLarge: 431, + UnavailableForLegalReasons: 451, + InternalServerError: 500, + NotImplemented: 501, + BadGateway: 502, + ServiceUnavailable: 503, + GatewayTimeout: 504, + HttpVersionNotSupported: 505, + VariantAlsoNegotiates: 506, + InsufficientStorage: 507, + LoopDetected: 508, + NotExtended: 510, + NetworkAuthenticationRequired: 511, +}; + +Object.entries(HttpStatusCode).forEach(([key, value]) => { + HttpStatusCode[value] = key; +}); + +var HttpStatusCode$1 = HttpStatusCode; + +/** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * + * @returns {Axios} A new instance of Axios + */ +function createInstance(defaultConfig) { + const context = new Axios$1(defaultConfig); + const instance = bind(Axios$1.prototype.request, context); + + // Copy axios.prototype to instance + utils$1.extend(instance, Axios$1.prototype, context, {allOwnKeys: true}); + + // Copy context to instance + utils$1.extend(instance, context, null, {allOwnKeys: true}); + + // Factory for creating new instances + instance.create = function create(instanceConfig) { + return createInstance(mergeConfig(defaultConfig, instanceConfig)); + }; + + return instance; +} + +// Create the default instance to be exported +const axios = createInstance(defaults$1); + +// Expose Axios class to allow class inheritance +axios.Axios = Axios$1; + +// Expose Cancel & CancelToken +axios.CanceledError = CanceledError; +axios.CancelToken = CancelToken$1; +axios.isCancel = isCancel; +axios.VERSION = VERSION; +axios.toFormData = toFormData; + +// Expose AxiosError class +axios.AxiosError = AxiosError; + +// alias for CanceledError for backward compatibility +axios.Cancel = axios.CanceledError; + +// Expose all/spread +axios.all = function all(promises) { + return Promise.all(promises); +}; + +axios.spread = spread; + +// Expose isAxiosError +axios.isAxiosError = isAxiosError; + +// Expose mergeConfig +axios.mergeConfig = mergeConfig; + +axios.AxiosHeaders = AxiosHeaders$1; + +axios.formToJSON = thing => formDataToJSON(utils$1.isHTMLForm(thing) ? new FormData(thing) : thing); + +axios.getAdapter = adapters.getAdapter; + +axios.HttpStatusCode = HttpStatusCode$1; + +axios.default = axios; + +module.exports = axios; +//# sourceMappingURL=axios.cjs.map diff --git a/node_modules/axios/dist/browser/axios.cjs.map b/node_modules/axios/dist/browser/axios.cjs.map new file mode 100644 index 0000000..7e7872c --- /dev/null +++ b/node_modules/axios/dist/browser/axios.cjs.map @@ -0,0 +1 @@ +{"version":3,"file":"axios.cjs","sources":["../../lib/helpers/bind.js","../../lib/utils.js","../../lib/core/AxiosError.js","../../lib/helpers/null.js","../../lib/helpers/toFormData.js","../../lib/helpers/AxiosURLSearchParams.js","../../lib/helpers/buildURL.js","../../lib/core/InterceptorManager.js","../../lib/defaults/transitional.js","../../lib/platform/browser/classes/URLSearchParams.js","../../lib/platform/browser/classes/FormData.js","../../lib/platform/browser/classes/Blob.js","../../lib/platform/browser/index.js","../../lib/platform/common/utils.js","../../lib/platform/index.js","../../lib/helpers/toURLEncodedForm.js","../../lib/helpers/formDataToJSON.js","../../lib/defaults/index.js","../../lib/helpers/parseHeaders.js","../../lib/core/AxiosHeaders.js","../../lib/core/transformData.js","../../lib/cancel/isCancel.js","../../lib/cancel/CanceledError.js","../../lib/core/settle.js","../../lib/helpers/parseProtocol.js","../../lib/helpers/speedometer.js","../../lib/helpers/throttle.js","../../lib/helpers/progressEventReducer.js","../../lib/helpers/isURLSameOrigin.js","../../lib/helpers/cookies.js","../../lib/helpers/isAbsoluteURL.js","../../lib/helpers/combineURLs.js","../../lib/core/buildFullPath.js","../../lib/core/mergeConfig.js","../../lib/helpers/resolveConfig.js","../../lib/adapters/xhr.js","../../lib/helpers/composeSignals.js","../../lib/helpers/trackStream.js","../../lib/adapters/fetch.js","../../lib/adapters/adapters.js","../../lib/core/dispatchRequest.js","../../lib/env/data.js","../../lib/helpers/validator.js","../../lib/core/Axios.js","../../lib/cancel/CancelToken.js","../../lib/helpers/spread.js","../../lib/helpers/isAxiosError.js","../../lib/helpers/HttpStatusCode.js","../../lib/axios.js"],"sourcesContent":["'use strict';\n\nexport default function bind(fn, thisArg) {\n return function wrap() {\n return fn.apply(thisArg, arguments);\n };\n}\n","'use strict';\n\nimport bind from './helpers/bind.js';\n\n// utils is a library of generic helper functions non-specific to axios\n\nconst {toString} = Object.prototype;\nconst {getPrototypeOf} = Object;\nconst {iterator, toStringTag} = Symbol;\n\nconst kindOf = (cache => thing => {\n const str = toString.call(thing);\n return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());\n})(Object.create(null));\n\nconst kindOfTest = (type) => {\n type = type.toLowerCase();\n return (thing) => kindOf(thing) === type\n}\n\nconst typeOfTest = type => thing => typeof thing === type;\n\n/**\n * Determine if a value is an Array\n *\n * @param {Object} val The value to test\n *\n * @returns {boolean} True if value is an Array, otherwise false\n */\nconst {isArray} = Array;\n\n/**\n * Determine if a value is undefined\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) {\n result = ArrayBuffer.isView(val);\n } else {\n result = (val) && (val.buffer) && (isArrayBuffer(val.buffer));\n }\n return result;\n}\n\n/**\n * Determine if a value is a String\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a String, otherwise false\n */\nconst isString = typeOfTest('string');\n\n/**\n * Determine if a value is a Function\n *\n * @param {*} val The value to test\n * @returns {boolean} True if value is a Function, otherwise false\n */\nconst isFunction = typeOfTest('function');\n\n/**\n * Determine if a value is a Number\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Number, otherwise false\n */\nconst isNumber = typeOfTest('number');\n\n/**\n * Determine if a value is an Object\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an Object, otherwise false\n */\nconst isObject = (thing) => thing !== null && typeof thing === 'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\nconst [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest);\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[iterator];\n\n const _iterator = generator.call(obj);\n\n let result;\n\n while ((result = _iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n return value != null && Number.isFinite(value = +value) ? value : defaultValue;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\n// original code\n// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34\n\nconst _setImmediate = ((setImmediateSupported, postMessageSupported) => {\n if (setImmediateSupported) {\n return setImmediate;\n }\n\n return postMessageSupported ? ((token, callbacks) => {\n _global.addEventListener(\"message\", ({source, data}) => {\n if (source === _global && data === token) {\n callbacks.length && callbacks.shift()();\n }\n }, false);\n\n return (cb) => {\n callbacks.push(cb);\n _global.postMessage(token, \"*\");\n }\n })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb);\n})(\n typeof setImmediate === 'function',\n isFunction(_global.postMessage)\n);\n\nconst asap = typeof queueMicrotask !== 'undefined' ?\n queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate);\n\n// *********************\n\n\nconst isIterable = (thing) => thing != null && isFunction(thing[iterator]);\n\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isReadableStream,\n isRequest,\n isResponse,\n isHeaders,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable,\n setImmediate: _setImmediate,\n asap,\n isIterable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n if (response) {\n this.response = response;\n this.status = response.status ? response.status : null;\n }\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.status\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","// eslint-disable-next-line strict\nexport default null;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (utils.isBoolean(value)) {\n return value.toString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?(object|Function)} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n if (utils.isFunction(options)) {\n options = {\n serialize: options\n };\n } \n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","'use strict';\n\nimport AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';\nexport default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;\n","'use strict';\n\nexport default typeof FormData !== 'undefined' ? FormData : null;\n","'use strict'\n\nexport default typeof Blob !== 'undefined' ? Blob : null\n","import URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\nimport Blob from './classes/Blob.js'\n\nexport default {\n isBrowser: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob\n },\n protocols: ['http', 'https', 'file', 'blob', 'url', 'data']\n};\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nconst _navigator = typeof navigator === 'object' && navigator || undefined;\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = hasBrowserEnv &&\n (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nconst origin = hasBrowserEnv && window.location.href || 'http://localhost';\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv,\n _navigator as navigator,\n origin\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n\n if (name === '__proto__') return true;\n\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http', 'fetch'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data) ||\n utils.isReadableStream(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (utils.isResponse(data) || utils.isReadableStream(data)) {\n return data;\n }\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else if (utils.isObject(header) && utils.isIterable(header)) {\n let obj = {}, dest, key;\n for (const entry of header) {\n if (!utils.isArray(entry)) {\n throw TypeError('Object iterator must return a key-value pair');\n }\n\n obj[key = entry[0]] = (dest = obj[key]) ?\n (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1];\n }\n\n setHeaders(obj, valueOrRewrite)\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n getSetCookie() {\n return this.get(\"set-cookie\") || [];\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","/**\n * Throttle decorator\n * @param {Function} fn\n * @param {Number} freq\n * @return {Function}\n */\nfunction throttle(fn, freq) {\n let timestamp = 0;\n let threshold = 1000 / freq;\n let lastArgs;\n let timer;\n\n const invoke = (args, now = Date.now()) => {\n timestamp = now;\n lastArgs = null;\n if (timer) {\n clearTimeout(timer);\n timer = null;\n }\n fn.apply(null, args);\n }\n\n const throttled = (...args) => {\n const now = Date.now();\n const passed = now - timestamp;\n if ( passed >= threshold) {\n invoke(args, now);\n } else {\n lastArgs = args;\n if (!timer) {\n timer = setTimeout(() => {\n timer = null;\n invoke(lastArgs)\n }, threshold - passed);\n }\n }\n }\n\n const flush = () => lastArgs && invoke(lastArgs);\n\n return [throttled, flush];\n}\n\nexport default throttle;\n","import speedometer from \"./speedometer.js\";\nimport throttle from \"./throttle.js\";\nimport utils from \"../utils.js\";\n\nexport const progressEventReducer = (listener, isDownloadStream, freq = 3) => {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return throttle(e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e,\n lengthComputable: total != null,\n [isDownloadStream ? 'download' : 'upload']: true\n };\n\n listener(data);\n }, freq);\n}\n\nexport const progressEventDecorator = (total, throttled) => {\n const lengthComputable = total != null;\n\n return [(loaded) => throttled[0]({\n lengthComputable,\n total,\n loaded\n }), throttled[1]];\n}\n\nexport const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args));\n","import platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {\n url = new URL(url, platform.origin);\n\n return (\n origin.protocol === url.protocol &&\n origin.host === url.host &&\n (isMSIE || origin.port === url.port)\n );\n})(\n new URL(platform.origin),\n platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)\n) : () => true;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/?\\/$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {\n let isRelativeUrl = !isAbsoluteURL(requestedURL);\n if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, prop, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, prop , caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, prop , caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, prop , caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport isURLSameOrigin from \"./isURLSameOrigin.js\";\nimport cookies from \"./cookies.js\";\nimport buildFullPath from \"../core/buildFullPath.js\";\nimport mergeConfig from \"../core/mergeConfig.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport buildURL from \"./buildURL.js\";\n\nexport default (config) => {\n const newConfig = mergeConfig({}, config);\n\n let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;\n\n newConfig.headers = headers = AxiosHeaders.from(headers);\n\n newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);\n\n // HTTP basic authentication\n if (auth) {\n headers.set('Authorization', 'Basic ' +\n btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))\n );\n }\n\n let contentType;\n\n if (utils.isFormData(data)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n headers.setContentType(undefined); // Let the browser set it\n } else if ((contentType = headers.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n\n if (platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {\n // Add xsrf header\n const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);\n\n if (xsrfValue) {\n headers.set(xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n return newConfig;\n}\n\n","import utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport {progressEventReducer} from '../helpers/progressEventReducer.js';\nimport resolveConfig from \"../helpers/resolveConfig.js\";\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n const _config = resolveConfig(config);\n let requestData = _config.data;\n const requestHeaders = AxiosHeaders.from(_config.headers).normalize();\n let {responseType, onUploadProgress, onDownloadProgress} = _config;\n let onCanceled;\n let uploadThrottled, downloadThrottled;\n let flushUpload, flushDownload;\n\n function done() {\n flushUpload && flushUpload(); // flush events\n flushDownload && flushDownload(); // flush events\n\n _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);\n\n _config.signal && _config.signal.removeEventListener('abort', onCanceled);\n }\n\n let request = new XMLHttpRequest();\n\n request.open(_config.method.toUpperCase(), _config.url, true);\n\n // Set the request timeout in MS\n request.timeout = _config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = _config.transitional || transitionalDefaults;\n if (_config.timeoutErrorMessage) {\n timeoutErrorMessage = _config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(_config.withCredentials)) {\n request.withCredentials = !!_config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = _config.responseType;\n }\n\n // Handle progress if needed\n if (onDownloadProgress) {\n ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));\n request.addEventListener('progress', downloadThrottled);\n }\n\n // Not all browsers support upload events\n if (onUploadProgress && request.upload) {\n ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));\n\n request.upload.addEventListener('progress', uploadThrottled);\n\n request.upload.addEventListener('loadend', flushUpload);\n }\n\n if (_config.cancelToken || _config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n _config.cancelToken && _config.cancelToken.subscribe(onCanceled);\n if (_config.signal) {\n _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(_config.url);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","import CanceledError from \"../cancel/CanceledError.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport utils from '../utils.js';\n\nconst composeSignals = (signals, timeout) => {\n const {length} = (signals = signals ? signals.filter(Boolean) : []);\n\n if (timeout || length) {\n let controller = new AbortController();\n\n let aborted;\n\n const onabort = function (reason) {\n if (!aborted) {\n aborted = true;\n unsubscribe();\n const err = reason instanceof Error ? reason : this.reason;\n controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));\n }\n }\n\n let timer = timeout && setTimeout(() => {\n timer = null;\n onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))\n }, timeout)\n\n const unsubscribe = () => {\n if (signals) {\n timer && clearTimeout(timer);\n timer = null;\n signals.forEach(signal => {\n signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);\n });\n signals = null;\n }\n }\n\n signals.forEach((signal) => signal.addEventListener('abort', onabort));\n\n const {signal} = controller;\n\n signal.unsubscribe = () => utils.asap(unsubscribe);\n\n return signal;\n }\n}\n\nexport default composeSignals;\n","\nexport const streamChunk = function* (chunk, chunkSize) {\n let len = chunk.byteLength;\n\n if (!chunkSize || len < chunkSize) {\n yield chunk;\n return;\n }\n\n let pos = 0;\n let end;\n\n while (pos < len) {\n end = pos + chunkSize;\n yield chunk.slice(pos, end);\n pos = end;\n }\n}\n\nexport const readBytes = async function* (iterable, chunkSize) {\n for await (const chunk of readStream(iterable)) {\n yield* streamChunk(chunk, chunkSize);\n }\n}\n\nconst readStream = async function* (stream) {\n if (stream[Symbol.asyncIterator]) {\n yield* stream;\n return;\n }\n\n const reader = stream.getReader();\n try {\n for (;;) {\n const {done, value} = await reader.read();\n if (done) {\n break;\n }\n yield value;\n }\n } finally {\n await reader.cancel();\n }\n}\n\nexport const trackStream = (stream, chunkSize, onProgress, onFinish) => {\n const iterator = readBytes(stream, chunkSize);\n\n let bytes = 0;\n let done;\n let _onFinish = (e) => {\n if (!done) {\n done = true;\n onFinish && onFinish(e);\n }\n }\n\n return new ReadableStream({\n async pull(controller) {\n try {\n const {done, value} = await iterator.next();\n\n if (done) {\n _onFinish();\n controller.close();\n return;\n }\n\n let len = value.byteLength;\n if (onProgress) {\n let loadedBytes = bytes += len;\n onProgress(loadedBytes);\n }\n controller.enqueue(new Uint8Array(value));\n } catch (err) {\n _onFinish(err);\n throw err;\n }\n },\n cancel(reason) {\n _onFinish(reason);\n return iterator.return();\n }\n }, {\n highWaterMark: 2\n })\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport composeSignals from \"../helpers/composeSignals.js\";\nimport {trackStream} from \"../helpers/trackStream.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\nimport resolveConfig from \"../helpers/resolveConfig.js\";\nimport settle from \"../core/settle.js\";\n\nconst isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function';\nconst isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function';\n\n// used only inside the fetch adapter\nconst encodeText = isFetchSupported && (typeof TextEncoder === 'function' ?\n ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) :\n async (str) => new Uint8Array(await new Response(str).arrayBuffer())\n);\n\nconst test = (fn, ...args) => {\n try {\n return !!fn(...args);\n } catch (e) {\n return false\n }\n}\n\nconst supportsRequestStream = isReadableStreamSupported && test(() => {\n let duplexAccessed = false;\n\n const hasContentType = new Request(platform.origin, {\n body: new ReadableStream(),\n method: 'POST',\n get duplex() {\n duplexAccessed = true;\n return 'half';\n },\n }).headers.has('Content-Type');\n\n return duplexAccessed && !hasContentType;\n});\n\nconst DEFAULT_CHUNK_SIZE = 64 * 1024;\n\nconst supportsResponseStream = isReadableStreamSupported &&\n test(() => utils.isReadableStream(new Response('').body));\n\n\nconst resolvers = {\n stream: supportsResponseStream && ((res) => res.body)\n};\n\nisFetchSupported && (((res) => {\n ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => {\n !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() :\n (_, config) => {\n throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config);\n })\n });\n})(new Response));\n\nconst getBodyLength = async (body) => {\n if (body == null) {\n return 0;\n }\n\n if(utils.isBlob(body)) {\n return body.size;\n }\n\n if(utils.isSpecCompliantForm(body)) {\n const _request = new Request(platform.origin, {\n method: 'POST',\n body,\n });\n return (await _request.arrayBuffer()).byteLength;\n }\n\n if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) {\n return body.byteLength;\n }\n\n if(utils.isURLSearchParams(body)) {\n body = body + '';\n }\n\n if(utils.isString(body)) {\n return (await encodeText(body)).byteLength;\n }\n}\n\nconst resolveBodyLength = async (headers, body) => {\n const length = utils.toFiniteNumber(headers.getContentLength());\n\n return length == null ? getBodyLength(body) : length;\n}\n\nexport default isFetchSupported && (async (config) => {\n let {\n url,\n method,\n data,\n signal,\n cancelToken,\n timeout,\n onDownloadProgress,\n onUploadProgress,\n responseType,\n headers,\n withCredentials = 'same-origin',\n fetchOptions\n } = resolveConfig(config);\n\n responseType = responseType ? (responseType + '').toLowerCase() : 'text';\n\n let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout);\n\n let request;\n\n const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => {\n composedSignal.unsubscribe();\n });\n\n let requestContentLength;\n\n try {\n if (\n onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' &&\n (requestContentLength = await resolveBodyLength(headers, data)) !== 0\n ) {\n let _request = new Request(url, {\n method: 'POST',\n body: data,\n duplex: \"half\"\n });\n\n let contentTypeHeader;\n\n if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) {\n headers.setContentType(contentTypeHeader)\n }\n\n if (_request.body) {\n const [onProgress, flush] = progressEventDecorator(\n requestContentLength,\n progressEventReducer(asyncDecorator(onUploadProgress))\n );\n\n data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush);\n }\n }\n\n if (!utils.isString(withCredentials)) {\n withCredentials = withCredentials ? 'include' : 'omit';\n }\n\n // Cloudflare Workers throws when credentials are defined\n // see https://github.com/cloudflare/workerd/issues/902\n const isCredentialsSupported = \"credentials\" in Request.prototype;\n request = new Request(url, {\n ...fetchOptions,\n signal: composedSignal,\n method: method.toUpperCase(),\n headers: headers.normalize().toJSON(),\n body: data,\n duplex: \"half\",\n credentials: isCredentialsSupported ? withCredentials : undefined\n });\n\n let response = await fetch(request, fetchOptions);\n\n const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response');\n\n if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) {\n const options = {};\n\n ['status', 'statusText', 'headers'].forEach(prop => {\n options[prop] = response[prop];\n });\n\n const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length'));\n\n const [onProgress, flush] = onDownloadProgress && progressEventDecorator(\n responseContentLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true)\n ) || [];\n\n response = new Response(\n trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => {\n flush && flush();\n unsubscribe && unsubscribe();\n }),\n options\n );\n }\n\n responseType = responseType || 'text';\n\n let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config);\n\n !isStreamResponse && unsubscribe && unsubscribe();\n\n return await new Promise((resolve, reject) => {\n settle(resolve, reject, {\n data: responseData,\n headers: AxiosHeaders.from(response.headers),\n status: response.status,\n statusText: response.statusText,\n config,\n request\n })\n })\n } catch (err) {\n unsubscribe && unsubscribe();\n\n if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) {\n throw Object.assign(\n new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request),\n {\n cause: err.cause || err\n }\n )\n }\n\n throw AxiosError.from(err, err && err.code, config, request);\n }\n});\n\n\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport fetchAdapter from './fetch.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter,\n fetch: fetchAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","export const VERSION = \"1.10.0\";","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\nvalidators.spelling = function spelling(correctSpelling) {\n return (value, opt) => {\n // eslint-disable-next-line no-console\n console.warn(`${opt} is likely a misspelling of ${correctSpelling}`);\n return true;\n }\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig || {};\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n async request(configOrUrl, config) {\n try {\n return await this._request(configOrUrl, config);\n } catch (err) {\n if (err instanceof Error) {\n let dummy = {};\n\n Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error());\n\n // slice off the Error: ... line\n const stack = dummy.stack ? dummy.stack.replace(/^.+\\n/, '') : '';\n try {\n if (!err.stack) {\n err.stack = stack;\n // match without the 2 top stack lines\n } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\\n.+\\n/, ''))) {\n err.stack += '\\n' + stack\n }\n } catch (e) {\n // ignore the case where \"stack\" is an un-writable property\n }\n }\n\n throw err;\n }\n }\n\n _request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.allowAbsoluteUrls\n if (config.allowAbsoluteUrls !== undefined) {\n // do nothing\n } else if (this.defaults.allowAbsoluteUrls !== undefined) {\n config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls;\n } else {\n config.allowAbsoluteUrls = true;\n }\n\n validator.assertOptions(config, {\n baseUrl: validators.spelling('baseURL'),\n withXsrfToken: validators.spelling('withXSRFToken')\n }, true);\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n toAbortSignal() {\n const controller = new AbortController();\n\n const abort = (err) => {\n controller.abort(err);\n };\n\n this.subscribe(abort);\n\n controller.signal.unsubscribe = () => this.unsubscribe(abort);\n\n return controller.signal;\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","'use strict';\n\n/**\n * Syntactic sugar for invoking a function and expanding an array for arguments.\n *\n * Common use case would be to use `Function.prototype.apply`.\n *\n * ```js\n * function f(x, y, z) {}\n * var args = [1, 2, 3];\n * f.apply(null, args);\n * ```\n *\n * With `spread` this example can be re-written.\n *\n * ```js\n * spread(function(x, y, z) {})([1, 2, 3]);\n * ```\n *\n * @param {Function} callback\n *\n * @returns {Function}\n */\nexport default function spread(callback) {\n return function wrap(arr) {\n return callback.apply(null, arr);\n };\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n/**\n * Determines whether the payload is an error thrown by Axios\n *\n * @param {*} payload The value to test\n *\n * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false\n */\nexport default function isAxiosError(payload) {\n return utils.isObject(payload) && (payload.isAxiosError === true);\n}\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n ResetContent: 205,\n PartialContent: 206,\n MultiStatus: 207,\n AlreadyReported: 208,\n ImUsed: 226,\n MultipleChoices: 300,\n MovedPermanently: 301,\n Found: 302,\n SeeOther: 303,\n NotModified: 304,\n UseProxy: 305,\n Unused: 306,\n TemporaryRedirect: 307,\n PermanentRedirect: 308,\n BadRequest: 400,\n Unauthorized: 401,\n PaymentRequired: 402,\n Forbidden: 403,\n NotFound: 404,\n MethodNotAllowed: 405,\n NotAcceptable: 406,\n ProxyAuthenticationRequired: 407,\n RequestTimeout: 408,\n Conflict: 409,\n Gone: 410,\n LengthRequired: 411,\n PreconditionFailed: 412,\n PayloadTooLarge: 413,\n UriTooLong: 414,\n UnsupportedMediaType: 415,\n RangeNotSatisfiable: 416,\n ExpectationFailed: 417,\n ImATeapot: 418,\n MisdirectedRequest: 421,\n UnprocessableEntity: 422,\n Locked: 423,\n FailedDependency: 424,\n TooEarly: 425,\n UpgradeRequired: 426,\n PreconditionRequired: 428,\n TooManyRequests: 429,\n RequestHeaderFieldsTooLarge: 431,\n UnavailableForLegalReasons: 451,\n InternalServerError: 500,\n NotImplemented: 501,\n BadGateway: 502,\n ServiceUnavailable: 503,\n GatewayTimeout: 504,\n HttpVersionNotSupported: 505,\n VariantAlsoNegotiates: 506,\n InsufficientStorage: 507,\n LoopDetected: 508,\n NotExtended: 510,\n NetworkAuthenticationRequired: 511,\n};\n\nObject.entries(HttpStatusCode).forEach(([key, value]) => {\n HttpStatusCode[value] = key;\n});\n\nexport default HttpStatusCode;\n","'use strict';\n\nimport utils from './utils.js';\nimport bind from './helpers/bind.js';\nimport Axios from './core/Axios.js';\nimport mergeConfig from './core/mergeConfig.js';\nimport defaults from './defaults/index.js';\nimport formDataToJSON from './helpers/formDataToJSON.js';\nimport CanceledError from './cancel/CanceledError.js';\nimport CancelToken from './cancel/CancelToken.js';\nimport isCancel from './cancel/isCancel.js';\nimport {VERSION} from './env/data.js';\nimport toFormData from './helpers/toFormData.js';\nimport AxiosError from './core/AxiosError.js';\nimport spread from './helpers/spread.js';\nimport isAxiosError from './helpers/isAxiosError.js';\nimport AxiosHeaders from \"./core/AxiosHeaders.js\";\nimport adapters from './adapters/adapters.js';\nimport HttpStatusCode from './helpers/HttpStatusCode.js';\n\n/**\n * Create an instance of Axios\n *\n * @param {Object} defaultConfig The default config for the instance\n *\n * @returns {Axios} A new instance of Axios\n */\nfunction createInstance(defaultConfig) {\n const context = new Axios(defaultConfig);\n const instance = bind(Axios.prototype.request, context);\n\n // Copy axios.prototype to instance\n utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});\n\n // Copy context to instance\n utils.extend(instance, context, null, {allOwnKeys: true});\n\n // Factory for creating new instances\n instance.create = function create(instanceConfig) {\n return createInstance(mergeConfig(defaultConfig, instanceConfig));\n };\n\n return instance;\n}\n\n// Create the default instance to be exported\nconst axios = createInstance(defaults);\n\n// Expose Axios class to allow class inheritance\naxios.Axios = Axios;\n\n// Expose Cancel & CancelToken\naxios.CanceledError = CanceledError;\naxios.CancelToken = CancelToken;\naxios.isCancel = isCancel;\naxios.VERSION = VERSION;\naxios.toFormData = toFormData;\n\n// Expose AxiosError class\naxios.AxiosError = AxiosError;\n\n// alias for CanceledError for backward compatibility\naxios.Cancel = axios.CanceledError;\n\n// Expose all/spread\naxios.all = function all(promises) {\n return Promise.all(promises);\n};\n\naxios.spread = spread;\n\n// Expose isAxiosError\naxios.isAxiosError = isAxiosError;\n\n// Expose mergeConfig\naxios.mergeConfig = mergeConfig;\n\naxios.AxiosHeaders = AxiosHeaders;\n\naxios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);\n\naxios.getAdapter = adapters.getAdapter;\n\naxios.HttpStatusCode = HttpStatusCode;\n\naxios.default = axios;\n\n// this module should only 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\ No newline at end of file diff --git a/node_modules/axios/dist/esm/axios.js b/node_modules/axios/dist/esm/axios.js new file mode 100644 index 0000000..698f2d5 --- /dev/null +++ b/node_modules/axios/dist/esm/axios.js @@ -0,0 +1,3753 @@ +/*! Axios v1.10.0 Copyright (c) 2025 Matt Zabriskie and contributors */ +function bind(fn, thisArg) { + return function wrap() { + return fn.apply(thisArg, arguments); + }; +} + +// utils is a library of generic helper functions non-specific to axios + +const {toString} = Object.prototype; +const {getPrototypeOf} = Object; +const {iterator, toStringTag} = Symbol; + +const kindOf = (cache => thing => { + const str = toString.call(thing); + return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase()); +})(Object.create(null)); + +const kindOfTest = (type) => { + type = type.toLowerCase(); + return (thing) => kindOf(thing) === type +}; + +const typeOfTest = type => thing => typeof thing === type; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * + * @returns {boolean} True if value is an Array, otherwise false + */ +const {isArray} = Array; + +/** + * Determine if a value is undefined + * + * @param {*} val The value to test + * + * @returns {boolean} True if the value is undefined, otherwise false + */ +const isUndefined = typeOfTest('undefined'); + +/** + * Determine if a value is a Buffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Buffer, otherwise false + */ +function isBuffer(val) { + return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) + && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val); +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +const isArrayBuffer = kindOfTest('ArrayBuffer'); + + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + let result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (isArrayBuffer(val.buffer)); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a String, otherwise false + */ +const isString = typeOfTest('string'); + +/** + * Determine if a value is a Function + * + * @param {*} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +const isFunction = typeOfTest('function'); + +/** + * Determine if a value is a Number + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Number, otherwise false + */ +const isNumber = typeOfTest('number'); + +/** + * Determine if a value is an Object + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an Object, otherwise false + */ +const isObject = (thing) => thing !== null && typeof thing === 'object'; + +/** + * Determine if a value is a Boolean + * + * @param {*} thing The value to test + * @returns {boolean} True if value is a Boolean, otherwise false + */ +const isBoolean = thing => thing === true || thing === false; + +/** + * Determine if a value is a plain Object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a plain Object, otherwise false + */ +const isPlainObject = (val) => { + if (kindOf(val) !== 'object') { + return false; + } + + const prototype = getPrototypeOf(val); + return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val); +}; + +/** + * Determine if a value is a Date + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Date, otherwise false + */ +const isDate = kindOfTest('Date'); + +/** + * Determine if a value is a File + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFile = kindOfTest('File'); + +/** + * Determine if a value is a Blob + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Blob, otherwise false + */ +const isBlob = kindOfTest('Blob'); + +/** + * Determine if a value is a FileList + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFileList = kindOfTest('FileList'); + +/** + * Determine if a value is a Stream + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Stream, otherwise false + */ +const isStream = (val) => isObject(val) && isFunction(val.pipe); + +/** + * Determine if a value is a FormData + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an FormData, otherwise false + */ +const isFormData = (thing) => { + let kind; + return thing && ( + (typeof FormData === 'function' && thing instanceof FormData) || ( + isFunction(thing.append) && ( + (kind = kindOf(thing)) === 'formdata' || + // detect form-data instance + (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]') + ) + ) + ) +}; + +/** + * Determine if a value is a URLSearchParams object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +const isURLSearchParams = kindOfTest('URLSearchParams'); + +const [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest); + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * + * @returns {String} The String freed of excess whitespace + */ +const trim = (str) => str.trim ? + str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, ''); + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + * + * @param {Boolean} [allOwnKeys = false] + * @returns {any} + */ +function forEach(obj, fn, {allOwnKeys = false} = {}) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + let i; + let l; + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj); + const len = keys.length; + let key; + + for (i = 0; i < len; i++) { + key = keys[i]; + fn.call(null, obj[key], key, obj); + } + } +} + +function findKey(obj, key) { + key = key.toLowerCase(); + const keys = Object.keys(obj); + let i = keys.length; + let _key; + while (i-- > 0) { + _key = keys[i]; + if (key === _key.toLowerCase()) { + return _key; + } + } + return null; +} + +const _global = (() => { + /*eslint no-undef:0*/ + if (typeof globalThis !== "undefined") return globalThis; + return typeof self !== "undefined" ? self : (typeof window !== 'undefined' ? window : global) +})(); + +const isContextDefined = (context) => !isUndefined(context) && context !== _global; + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + const {caseless} = isContextDefined(this) && this || {}; + const result = {}; + const assignValue = (val, key) => { + const targetKey = caseless && findKey(result, key) || key; + if (isPlainObject(result[targetKey]) && isPlainObject(val)) { + result[targetKey] = merge(result[targetKey], val); + } else if (isPlainObject(val)) { + result[targetKey] = merge({}, val); + } else if (isArray(val)) { + result[targetKey] = val.slice(); + } else { + result[targetKey] = val; + } + }; + + for (let i = 0, l = arguments.length; i < l; i++) { + arguments[i] && forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * + * @param {Boolean} [allOwnKeys] + * @returns {Object} The resulting value of object a + */ +const extend = (a, b, thisArg, {allOwnKeys}= {}) => { + forEach(b, (val, key) => { + if (thisArg && isFunction(val)) { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }, {allOwnKeys}); + return a; +}; + +/** + * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) + * + * @param {string} content with BOM + * + * @returns {string} content value without BOM + */ +const stripBOM = (content) => { + if (content.charCodeAt(0) === 0xFEFF) { + content = content.slice(1); + } + return content; +}; + +/** + * Inherit the prototype methods from one constructor into another + * @param {function} constructor + * @param {function} superConstructor + * @param {object} [props] + * @param {object} [descriptors] + * + * @returns {void} + */ +const inherits = (constructor, superConstructor, props, descriptors) => { + constructor.prototype = Object.create(superConstructor.prototype, descriptors); + constructor.prototype.constructor = constructor; + Object.defineProperty(constructor, 'super', { + value: superConstructor.prototype + }); + props && Object.assign(constructor.prototype, props); +}; + +/** + * Resolve object with deep prototype chain to a flat object + * @param {Object} sourceObj source object + * @param {Object} [destObj] + * @param {Function|Boolean} [filter] + * @param {Function} [propFilter] + * + * @returns {Object} + */ +const toFlatObject = (sourceObj, destObj, filter, propFilter) => { + let props; + let i; + let prop; + const merged = {}; + + destObj = destObj || {}; + // eslint-disable-next-line no-eq-null,eqeqeq + if (sourceObj == null) return destObj; + + do { + props = Object.getOwnPropertyNames(sourceObj); + i = props.length; + while (i-- > 0) { + prop = props[i]; + if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) { + destObj[prop] = sourceObj[prop]; + merged[prop] = true; + } + } + sourceObj = filter !== false && getPrototypeOf(sourceObj); + } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype); + + return destObj; +}; + +/** + * Determines whether a string ends with the characters of a specified string + * + * @param {String} str + * @param {String} searchString + * @param {Number} [position= 0] + * + * @returns {boolean} + */ +const endsWith = (str, searchString, position) => { + str = String(str); + if (position === undefined || position > str.length) { + position = str.length; + } + position -= searchString.length; + const lastIndex = str.indexOf(searchString, position); + return lastIndex !== -1 && lastIndex === position; +}; + + +/** + * Returns new array from array like object or null if failed + * + * @param {*} [thing] + * + * @returns {?Array} + */ +const toArray = (thing) => { + if (!thing) return null; + if (isArray(thing)) return thing; + let i = thing.length; + if (!isNumber(i)) return null; + const arr = new Array(i); + while (i-- > 0) { + arr[i] = thing[i]; + } + return arr; +}; + +/** + * Checking if the Uint8Array exists and if it does, it returns a function that checks if the + * thing passed in is an instance of Uint8Array + * + * @param {TypedArray} + * + * @returns {Array} + */ +// eslint-disable-next-line func-names +const isTypedArray = (TypedArray => { + // eslint-disable-next-line func-names + return thing => { + return TypedArray && thing instanceof TypedArray; + }; +})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array)); + +/** + * For each entry in the object, call the function with the key and value. + * + * @param {Object} obj - The object to iterate over. + * @param {Function} fn - The function to call for each entry. + * + * @returns {void} + */ +const forEachEntry = (obj, fn) => { + const generator = obj && obj[iterator]; + + const _iterator = generator.call(obj); + + let result; + + while ((result = _iterator.next()) && !result.done) { + const pair = result.value; + fn.call(obj, pair[0], pair[1]); + } +}; + +/** + * It takes a regular expression and a string, and returns an array of all the matches + * + * @param {string} regExp - The regular expression to match against. + * @param {string} str - The string to search. + * + * @returns {Array} + */ +const matchAll = (regExp, str) => { + let matches; + const arr = []; + + while ((matches = regExp.exec(str)) !== null) { + arr.push(matches); + } + + return arr; +}; + +/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */ +const isHTMLForm = kindOfTest('HTMLFormElement'); + +const toCamelCase = str => { + return str.toLowerCase().replace(/[-_\s]([a-z\d])(\w*)/g, + function replacer(m, p1, p2) { + return p1.toUpperCase() + p2; + } + ); +}; + +/* Creating a function that will check if an object has a property. */ +const hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype); + +/** + * Determine if a value is a RegExp object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a RegExp object, otherwise false + */ +const isRegExp = kindOfTest('RegExp'); + +const reduceDescriptors = (obj, reducer) => { + const descriptors = Object.getOwnPropertyDescriptors(obj); + const reducedDescriptors = {}; + + forEach(descriptors, (descriptor, name) => { + let ret; + if ((ret = reducer(descriptor, name, obj)) !== false) { + reducedDescriptors[name] = ret || descriptor; + } + }); + + Object.defineProperties(obj, reducedDescriptors); +}; + +/** + * Makes all methods read-only + * @param {Object} obj + */ + +const freezeMethods = (obj) => { + reduceDescriptors(obj, (descriptor, name) => { + // skip restricted props in strict mode + if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) { + return false; + } + + const value = obj[name]; + + if (!isFunction(value)) return; + + descriptor.enumerable = false; + + if ('writable' in descriptor) { + descriptor.writable = false; + return; + } + + if (!descriptor.set) { + descriptor.set = () => { + throw Error('Can not rewrite read-only method \'' + name + '\''); + }; + } + }); +}; + +const toObjectSet = (arrayOrString, delimiter) => { + const obj = {}; + + const define = (arr) => { + arr.forEach(value => { + obj[value] = true; + }); + }; + + isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter)); + + return obj; +}; + +const noop = () => {}; + +const toFiniteNumber = (value, defaultValue) => { + return value != null && Number.isFinite(value = +value) ? value : defaultValue; +}; + +/** + * If the thing is a FormData object, return true, otherwise return false. + * + * @param {unknown} thing - The thing to check. + * + * @returns {boolean} + */ +function isSpecCompliantForm(thing) { + return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]); +} + +const toJSONObject = (obj) => { + const stack = new Array(10); + + const visit = (source, i) => { + + if (isObject(source)) { + if (stack.indexOf(source) >= 0) { + return; + } + + if(!('toJSON' in source)) { + stack[i] = source; + const target = isArray(source) ? [] : {}; + + forEach(source, (value, key) => { + const reducedValue = visit(value, i + 1); + !isUndefined(reducedValue) && (target[key] = reducedValue); + }); + + stack[i] = undefined; + + return target; + } + } + + return source; + }; + + return visit(obj, 0); +}; + +const isAsyncFn = kindOfTest('AsyncFunction'); + +const isThenable = (thing) => + thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch); + +// original code +// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34 + +const _setImmediate = ((setImmediateSupported, postMessageSupported) => { + if (setImmediateSupported) { + return setImmediate; + } + + return postMessageSupported ? ((token, callbacks) => { + _global.addEventListener("message", ({source, data}) => { + if (source === _global && data === token) { + callbacks.length && callbacks.shift()(); + } + }, false); + + return (cb) => { + callbacks.push(cb); + _global.postMessage(token, "*"); + } + })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb); +})( + typeof setImmediate === 'function', + isFunction(_global.postMessage) +); + +const asap = typeof queueMicrotask !== 'undefined' ? + queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate); + +// ********************* + + +const isIterable = (thing) => thing != null && isFunction(thing[iterator]); + + +const utils$1 = { + isArray, + isArrayBuffer, + isBuffer, + isFormData, + isArrayBufferView, + isString, + isNumber, + isBoolean, + isObject, + isPlainObject, + isReadableStream, + isRequest, + isResponse, + isHeaders, + isUndefined, + isDate, + isFile, + isBlob, + isRegExp, + isFunction, + isStream, + isURLSearchParams, + isTypedArray, + isFileList, + forEach, + merge, + extend, + trim, + stripBOM, + inherits, + toFlatObject, + kindOf, + kindOfTest, + endsWith, + toArray, + forEachEntry, + matchAll, + isHTMLForm, + hasOwnProperty, + hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection + reduceDescriptors, + freezeMethods, + toObjectSet, + toCamelCase, + noop, + toFiniteNumber, + findKey, + global: _global, + isContextDefined, + isSpecCompliantForm, + toJSONObject, + isAsyncFn, + isThenable, + setImmediate: _setImmediate, + asap, + isIterable +}; + +/** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [config] The config. + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * + * @returns {Error} The created error. + */ +function AxiosError$1(message, code, config, request, response) { + Error.call(this); + + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } else { + this.stack = (new Error()).stack; + } + + this.message = message; + this.name = 'AxiosError'; + code && (this.code = code); + config && (this.config = config); + request && (this.request = request); + if (response) { + this.response = response; + this.status = response.status ? response.status : null; + } +} + +utils$1.inherits(AxiosError$1, Error, { + toJSON: function toJSON() { + return { + // Standard + message: this.message, + name: this.name, + // Microsoft + description: this.description, + number: this.number, + // Mozilla + fileName: this.fileName, + lineNumber: this.lineNumber, + columnNumber: this.columnNumber, + stack: this.stack, + // Axios + config: utils$1.toJSONObject(this.config), + code: this.code, + status: this.status + }; + } +}); + +const prototype$1 = AxiosError$1.prototype; +const descriptors = {}; + +[ + 'ERR_BAD_OPTION_VALUE', + 'ERR_BAD_OPTION', + 'ECONNABORTED', + 'ETIMEDOUT', + 'ERR_NETWORK', + 'ERR_FR_TOO_MANY_REDIRECTS', + 'ERR_DEPRECATED', + 'ERR_BAD_RESPONSE', + 'ERR_BAD_REQUEST', + 'ERR_CANCELED', + 'ERR_NOT_SUPPORT', + 'ERR_INVALID_URL' +// eslint-disable-next-line func-names +].forEach(code => { + descriptors[code] = {value: code}; +}); + +Object.defineProperties(AxiosError$1, descriptors); +Object.defineProperty(prototype$1, 'isAxiosError', {value: true}); + +// eslint-disable-next-line func-names +AxiosError$1.from = (error, code, config, request, response, customProps) => { + const axiosError = Object.create(prototype$1); + + utils$1.toFlatObject(error, axiosError, function filter(obj) { + return obj !== Error.prototype; + }, prop => { + return prop !== 'isAxiosError'; + }); + + AxiosError$1.call(axiosError, error.message, code, config, request, response); + + axiosError.cause = error; + + axiosError.name = error.name; + + customProps && Object.assign(axiosError, customProps); + + return axiosError; +}; + +// eslint-disable-next-line strict +const httpAdapter = null; + +/** + * Determines if the given thing is a array or js object. + * + * @param {string} thing - The object or array to be visited. + * + * @returns {boolean} + */ +function isVisitable(thing) { + return utils$1.isPlainObject(thing) || utils$1.isArray(thing); +} + +/** + * It removes the brackets from the end of a string + * + * @param {string} key - The key of the parameter. + * + * @returns {string} the key without the brackets. + */ +function removeBrackets(key) { + return utils$1.endsWith(key, '[]') ? key.slice(0, -2) : key; +} + +/** + * It takes a path, a key, and a boolean, and returns a string + * + * @param {string} path - The path to the current key. + * @param {string} key - The key of the current object being iterated over. + * @param {string} dots - If true, the key will be rendered with dots instead of brackets. + * + * @returns {string} The path to the current key. + */ +function renderKey(path, key, dots) { + if (!path) return key; + return path.concat(key).map(function each(token, i) { + // eslint-disable-next-line no-param-reassign + token = removeBrackets(token); + return !dots && i ? '[' + token + ']' : token; + }).join(dots ? '.' : ''); +} + +/** + * If the array is an array and none of its elements are visitable, then it's a flat array. + * + * @param {Array} arr - The array to check + * + * @returns {boolean} + */ +function isFlatArray(arr) { + return utils$1.isArray(arr) && !arr.some(isVisitable); +} + +const predicates = utils$1.toFlatObject(utils$1, {}, null, function filter(prop) { + return /^is[A-Z]/.test(prop); +}); + +/** + * Convert a data object to FormData + * + * @param {Object} obj + * @param {?Object} [formData] + * @param {?Object} [options] + * @param {Function} [options.visitor] + * @param {Boolean} [options.metaTokens = true] + * @param {Boolean} [options.dots = false] + * @param {?Boolean} [options.indexes = false] + * + * @returns {Object} + **/ + +/** + * It converts an object into a FormData object + * + * @param {Object} obj - The object to convert to form data. + * @param {string} formData - The FormData object to append to. + * @param {Object} options + * + * @returns + */ +function toFormData$1(obj, formData, options) { + if (!utils$1.isObject(obj)) { + throw new TypeError('target must be an object'); + } + + // eslint-disable-next-line no-param-reassign + formData = formData || new (FormData)(); + + // eslint-disable-next-line no-param-reassign + options = utils$1.toFlatObject(options, { + metaTokens: true, + dots: false, + indexes: false + }, false, function defined(option, source) { + // eslint-disable-next-line no-eq-null,eqeqeq + return !utils$1.isUndefined(source[option]); + }); + + const metaTokens = options.metaTokens; + // eslint-disable-next-line no-use-before-define + const visitor = options.visitor || defaultVisitor; + const dots = options.dots; + const indexes = options.indexes; + const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob; + const useBlob = _Blob && utils$1.isSpecCompliantForm(formData); + + if (!utils$1.isFunction(visitor)) { + throw new TypeError('visitor must be a function'); + } + + function convertValue(value) { + if (value === null) return ''; + + if (utils$1.isDate(value)) { + return value.toISOString(); + } + + if (utils$1.isBoolean(value)) { + return value.toString(); + } + + if (!useBlob && utils$1.isBlob(value)) { + throw new AxiosError$1('Blob is not supported. Use a Buffer instead.'); + } + + if (utils$1.isArrayBuffer(value) || utils$1.isTypedArray(value)) { + return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value); + } + + return value; + } + + /** + * Default visitor. + * + * @param {*} value + * @param {String|Number} key + * @param {Array} path + * @this {FormData} + * + * @returns {boolean} return true to visit the each prop of the value recursively + */ + function defaultVisitor(value, key, path) { + let arr = value; + + if (value && !path && typeof value === 'object') { + if (utils$1.endsWith(key, '{}')) { + // eslint-disable-next-line no-param-reassign + key = metaTokens ? key : key.slice(0, -2); + // eslint-disable-next-line no-param-reassign + value = JSON.stringify(value); + } else if ( + (utils$1.isArray(value) && isFlatArray(value)) || + ((utils$1.isFileList(value) || utils$1.endsWith(key, '[]')) && (arr = utils$1.toArray(value)) + )) { + // eslint-disable-next-line no-param-reassign + key = removeBrackets(key); + + arr.forEach(function each(el, index) { + !(utils$1.isUndefined(el) || el === null) && formData.append( + // eslint-disable-next-line no-nested-ternary + indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'), + convertValue(el) + ); + }); + return false; + } + } + + if (isVisitable(value)) { + return true; + } + + formData.append(renderKey(path, key, dots), convertValue(value)); + + return false; + } + + const stack = []; + + const exposedHelpers = Object.assign(predicates, { + defaultVisitor, + convertValue, + isVisitable + }); + + function build(value, path) { + if (utils$1.isUndefined(value)) return; + + if (stack.indexOf(value) !== -1) { + throw Error('Circular reference detected in ' + path.join('.')); + } + + stack.push(value); + + utils$1.forEach(value, function each(el, key) { + const result = !(utils$1.isUndefined(el) || el === null) && visitor.call( + formData, el, utils$1.isString(key) ? key.trim() : key, path, exposedHelpers + ); + + if (result === true) { + build(el, path ? path.concat(key) : [key]); + } + }); + + stack.pop(); + } + + if (!utils$1.isObject(obj)) { + throw new TypeError('data must be an object'); + } + + build(obj); + + return formData; +} + +/** + * It encodes a string by replacing all characters that are not in the unreserved set with + * their percent-encoded equivalents + * + * @param {string} str - The string to encode. + * + * @returns {string} The encoded string. + */ +function encode$1(str) { + const charMap = { + '!': '%21', + "'": '%27', + '(': '%28', + ')': '%29', + '~': '%7E', + '%20': '+', + '%00': '\x00' + }; + return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) { + return charMap[match]; + }); +} + +/** + * It takes a params object and converts it to a FormData object + * + * @param {Object} params - The parameters to be converted to a FormData object. + * @param {Object} options - The options object passed to the Axios constructor. + * + * @returns {void} + */ +function AxiosURLSearchParams(params, options) { + this._pairs = []; + + params && toFormData$1(params, this, options); +} + +const prototype = AxiosURLSearchParams.prototype; + +prototype.append = function append(name, value) { + this._pairs.push([name, value]); +}; + +prototype.toString = function toString(encoder) { + const _encode = encoder ? function(value) { + return encoder.call(this, value, encode$1); + } : encode$1; + + return this._pairs.map(function each(pair) { + return _encode(pair[0]) + '=' + _encode(pair[1]); + }, '').join('&'); +}; + +/** + * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their + * URI encoded counterparts + * + * @param {string} val The value to be encoded. + * + * @returns {string} The encoded value. + */ +function encode(val) { + return encodeURIComponent(val). + replace(/%3A/gi, ':'). + replace(/%24/g, '$'). + replace(/%2C/gi, ','). + replace(/%20/g, '+'). + replace(/%5B/gi, '['). + replace(/%5D/gi, ']'); +} + +/** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @param {?(object|Function)} options + * + * @returns {string} The formatted url + */ +function buildURL(url, params, options) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + + const _encode = options && options.encode || encode; + + if (utils$1.isFunction(options)) { + options = { + serialize: options + }; + } + + const serializeFn = options && options.serialize; + + let serializedParams; + + if (serializeFn) { + serializedParams = serializeFn(params, options); + } else { + serializedParams = utils$1.isURLSearchParams(params) ? + params.toString() : + new AxiosURLSearchParams(params, options).toString(_encode); + } + + if (serializedParams) { + const hashmarkIndex = url.indexOf("#"); + + if (hashmarkIndex !== -1) { + url = url.slice(0, hashmarkIndex); + } + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + + return url; +} + +class InterceptorManager { + constructor() { + this.handlers = []; + } + + /** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ + use(fulfilled, rejected, options) { + this.handlers.push({ + fulfilled, + rejected, + synchronous: options ? options.synchronous : false, + runWhen: options ? options.runWhen : null + }); + return this.handlers.length - 1; + } + + /** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + * + * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise + */ + eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } + } + + /** + * Clear all interceptors from the stack + * + * @returns {void} + */ + clear() { + if (this.handlers) { + this.handlers = []; + } + } + + /** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + * + * @returns {void} + */ + forEach(fn) { + utils$1.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); + } +} + +const InterceptorManager$1 = InterceptorManager; + +const transitionalDefaults = { + silentJSONParsing: true, + forcedJSONParsing: true, + clarifyTimeoutError: false +}; + +const URLSearchParams$1 = typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams; + +const FormData$1 = typeof FormData !== 'undefined' ? FormData : null; + +const Blob$1 = typeof Blob !== 'undefined' ? Blob : null; + +const platform$1 = { + isBrowser: true, + classes: { + URLSearchParams: URLSearchParams$1, + FormData: FormData$1, + Blob: Blob$1 + }, + protocols: ['http', 'https', 'file', 'blob', 'url', 'data'] +}; + +const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined'; + +const _navigator = typeof navigator === 'object' && navigator || undefined; + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + * + * @returns {boolean} + */ +const hasStandardBrowserEnv = hasBrowserEnv && + (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0); + +/** + * Determine if we're running in a standard browser webWorker environment + * + * Although the `isStandardBrowserEnv` method indicates that + * `allows axios to run in a web worker`, the WebWorker will still be + * filtered out due to its judgment standard + * `typeof window !== 'undefined' && typeof document !== 'undefined'`. + * This leads to a problem when axios post `FormData` in webWorker + */ +const hasStandardBrowserWebWorkerEnv = (() => { + return ( + typeof WorkerGlobalScope !== 'undefined' && + // eslint-disable-next-line no-undef + self instanceof WorkerGlobalScope && + typeof self.importScripts === 'function' + ); +})(); + +const origin = hasBrowserEnv && window.location.href || 'http://localhost'; + +const utils = /*#__PURE__*/Object.freeze({ + __proto__: null, + hasBrowserEnv: hasBrowserEnv, + hasStandardBrowserWebWorkerEnv: hasStandardBrowserWebWorkerEnv, + hasStandardBrowserEnv: hasStandardBrowserEnv, + navigator: _navigator, + origin: origin +}); + +const platform = { + ...utils, + ...platform$1 +}; + +function toURLEncodedForm(data, options) { + return toFormData$1(data, new platform.classes.URLSearchParams(), Object.assign({ + visitor: function(value, key, path, helpers) { + if (platform.isNode && utils$1.isBuffer(value)) { + this.append(key, value.toString('base64')); + return false; + } + + return helpers.defaultVisitor.apply(this, arguments); + } + }, options)); +} + +/** + * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z'] + * + * @param {string} name - The name of the property to get. + * + * @returns An array of strings. + */ +function parsePropPath(name) { + // foo[x][y][z] + // foo.x.y.z + // foo-x-y-z + // foo x y z + return utils$1.matchAll(/\w+|\[(\w*)]/g, name).map(match => { + return match[0] === '[]' ? '' : match[1] || match[0]; + }); +} + +/** + * Convert an array to an object. + * + * @param {Array} arr - The array to convert to an object. + * + * @returns An object with the same keys and values as the array. + */ +function arrayToObject(arr) { + const obj = {}; + const keys = Object.keys(arr); + let i; + const len = keys.length; + let key; + for (i = 0; i < len; i++) { + key = keys[i]; + obj[key] = arr[key]; + } + return obj; +} + +/** + * It takes a FormData object and returns a JavaScript object + * + * @param {string} formData The FormData object to convert to JSON. + * + * @returns {Object | null} The converted object. + */ +function formDataToJSON(formData) { + function buildPath(path, value, target, index) { + let name = path[index++]; + + if (name === '__proto__') return true; + + const isNumericKey = Number.isFinite(+name); + const isLast = index >= path.length; + name = !name && utils$1.isArray(target) ? target.length : name; + + if (isLast) { + if (utils$1.hasOwnProp(target, name)) { + target[name] = [target[name], value]; + } else { + target[name] = value; + } + + return !isNumericKey; + } + + if (!target[name] || !utils$1.isObject(target[name])) { + target[name] = []; + } + + const result = buildPath(path, value, target[name], index); + + if (result && utils$1.isArray(target[name])) { + target[name] = arrayToObject(target[name]); + } + + return !isNumericKey; + } + + if (utils$1.isFormData(formData) && utils$1.isFunction(formData.entries)) { + const obj = {}; + + utils$1.forEachEntry(formData, (name, value) => { + buildPath(parsePropPath(name), value, obj, 0); + }); + + return obj; + } + + return null; +} + +/** + * It takes a string, tries to parse it, and if it fails, it returns the stringified version + * of the input + * + * @param {any} rawValue - The value to be stringified. + * @param {Function} parser - A function that parses a string into a JavaScript object. + * @param {Function} encoder - A function that takes a value and returns a string. + * + * @returns {string} A stringified version of the rawValue. + */ +function stringifySafely(rawValue, parser, encoder) { + if (utils$1.isString(rawValue)) { + try { + (parser || JSON.parse)(rawValue); + return utils$1.trim(rawValue); + } catch (e) { + if (e.name !== 'SyntaxError') { + throw e; + } + } + } + + return (encoder || JSON.stringify)(rawValue); +} + +const defaults = { + + transitional: transitionalDefaults, + + adapter: ['xhr', 'http', 'fetch'], + + transformRequest: [function transformRequest(data, headers) { + const contentType = headers.getContentType() || ''; + const hasJSONContentType = contentType.indexOf('application/json') > -1; + const isObjectPayload = utils$1.isObject(data); + + if (isObjectPayload && utils$1.isHTMLForm(data)) { + data = new FormData(data); + } + + const isFormData = utils$1.isFormData(data); + + if (isFormData) { + return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data; + } + + if (utils$1.isArrayBuffer(data) || + utils$1.isBuffer(data) || + utils$1.isStream(data) || + utils$1.isFile(data) || + utils$1.isBlob(data) || + utils$1.isReadableStream(data) + ) { + return data; + } + if (utils$1.isArrayBufferView(data)) { + return data.buffer; + } + if (utils$1.isURLSearchParams(data)) { + headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false); + return data.toString(); + } + + let isFileList; + + if (isObjectPayload) { + if (contentType.indexOf('application/x-www-form-urlencoded') > -1) { + return toURLEncodedForm(data, this.formSerializer).toString(); + } + + if ((isFileList = utils$1.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) { + const _FormData = this.env && this.env.FormData; + + return toFormData$1( + isFileList ? {'files[]': data} : data, + _FormData && new _FormData(), + this.formSerializer + ); + } + } + + if (isObjectPayload || hasJSONContentType ) { + headers.setContentType('application/json', false); + return stringifySafely(data); + } + + return data; + }], + + transformResponse: [function transformResponse(data) { + const transitional = this.transitional || defaults.transitional; + const forcedJSONParsing = transitional && transitional.forcedJSONParsing; + const JSONRequested = this.responseType === 'json'; + + if (utils$1.isResponse(data) || utils$1.isReadableStream(data)) { + return data; + } + + if (data && utils$1.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) { + const silentJSONParsing = transitional && transitional.silentJSONParsing; + const strictJSONParsing = !silentJSONParsing && JSONRequested; + + try { + return JSON.parse(data); + } catch (e) { + if (strictJSONParsing) { + if (e.name === 'SyntaxError') { + throw AxiosError$1.from(e, AxiosError$1.ERR_BAD_RESPONSE, this, null, this.response); + } + throw e; + } + } + } + + return data; + }], + + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + + maxContentLength: -1, + maxBodyLength: -1, + + env: { + FormData: platform.classes.FormData, + Blob: platform.classes.Blob + }, + + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + }, + + headers: { + common: { + 'Accept': 'application/json, text/plain, */*', + 'Content-Type': undefined + } + } +}; + +utils$1.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => { + defaults.headers[method] = {}; +}); + +const defaults$1 = defaults; + +// RawAxiosHeaders whose duplicates are ignored by node +// c.f. https://nodejs.org/api/http.html#http_message_headers +const ignoreDuplicateOf = utils$1.toObjectSet([ + 'age', 'authorization', 'content-length', 'content-type', 'etag', + 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', + 'last-modified', 'location', 'max-forwards', 'proxy-authorization', + 'referer', 'retry-after', 'user-agent' +]); + +/** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} rawHeaders Headers needing to be parsed + * + * @returns {Object} Headers parsed into an object + */ +const parseHeaders = rawHeaders => { + const parsed = {}; + let key; + let val; + let i; + + rawHeaders && rawHeaders.split('\n').forEach(function parser(line) { + i = line.indexOf(':'); + key = line.substring(0, i).trim().toLowerCase(); + val = line.substring(i + 1).trim(); + + if (!key || (parsed[key] && ignoreDuplicateOf[key])) { + return; + } + + if (key === 'set-cookie') { + if (parsed[key]) { + parsed[key].push(val); + } else { + parsed[key] = [val]; + } + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + }); + + return parsed; +}; + +const $internals = Symbol('internals'); + +function normalizeHeader(header) { + return header && String(header).trim().toLowerCase(); +} + +function normalizeValue(value) { + if (value === false || value == null) { + return value; + } + + return utils$1.isArray(value) ? value.map(normalizeValue) : String(value); +} + +function parseTokens(str) { + const tokens = Object.create(null); + const tokensRE = /([^\s,;=]+)\s*(?:=\s*([^,;]+))?/g; + let match; + + while ((match = tokensRE.exec(str))) { + tokens[match[1]] = match[2]; + } + + return tokens; +} + +const isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim()); + +function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) { + if (utils$1.isFunction(filter)) { + return filter.call(this, value, header); + } + + if (isHeaderNameFilter) { + value = header; + } + + if (!utils$1.isString(value)) return; + + if (utils$1.isString(filter)) { + return value.indexOf(filter) !== -1; + } + + if (utils$1.isRegExp(filter)) { + return filter.test(value); + } +} + +function formatHeader(header) { + return header.trim() + .toLowerCase().replace(/([a-z\d])(\w*)/g, (w, char, str) => { + return char.toUpperCase() + str; + }); +} + +function buildAccessors(obj, header) { + const accessorName = utils$1.toCamelCase(' ' + header); + + ['get', 'set', 'has'].forEach(methodName => { + Object.defineProperty(obj, methodName + accessorName, { + value: function(arg1, arg2, arg3) { + return this[methodName].call(this, header, arg1, arg2, arg3); + }, + configurable: true + }); + }); +} + +class AxiosHeaders$1 { + constructor(headers) { + headers && this.set(headers); + } + + set(header, valueOrRewrite, rewrite) { + const self = this; + + function setHeader(_value, _header, _rewrite) { + const lHeader = normalizeHeader(_header); + + if (!lHeader) { + throw new Error('header name must be a non-empty string'); + } + + const key = utils$1.findKey(self, lHeader); + + if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) { + self[key || _header] = normalizeValue(_value); + } + } + + const setHeaders = (headers, _rewrite) => + utils$1.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite)); + + if (utils$1.isPlainObject(header) || header instanceof this.constructor) { + setHeaders(header, valueOrRewrite); + } else if(utils$1.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) { + setHeaders(parseHeaders(header), valueOrRewrite); + } else if (utils$1.isObject(header) && utils$1.isIterable(header)) { + let obj = {}, dest, key; + for (const entry of header) { + if (!utils$1.isArray(entry)) { + throw TypeError('Object iterator must return a key-value pair'); + } + + obj[key = entry[0]] = (dest = obj[key]) ? + (utils$1.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1]; + } + + setHeaders(obj, valueOrRewrite); + } else { + header != null && setHeader(valueOrRewrite, header, rewrite); + } + + return this; + } + + get(header, parser) { + header = normalizeHeader(header); + + if (header) { + const key = utils$1.findKey(this, header); + + if (key) { + const value = this[key]; + + if (!parser) { + return value; + } + + if (parser === true) { + return parseTokens(value); + } + + if (utils$1.isFunction(parser)) { + return parser.call(this, value, key); + } + + if (utils$1.isRegExp(parser)) { + return parser.exec(value); + } + + throw new TypeError('parser must be boolean|regexp|function'); + } + } + } + + has(header, matcher) { + header = normalizeHeader(header); + + if (header) { + const key = utils$1.findKey(this, header); + + return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher))); + } + + return false; + } + + delete(header, matcher) { + const self = this; + let deleted = false; + + function deleteHeader(_header) { + _header = normalizeHeader(_header); + + if (_header) { + const key = utils$1.findKey(self, _header); + + if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) { + delete self[key]; + + deleted = true; + } + } + } + + if (utils$1.isArray(header)) { + header.forEach(deleteHeader); + } else { + deleteHeader(header); + } + + return deleted; + } + + clear(matcher) { + const keys = Object.keys(this); + let i = keys.length; + let deleted = false; + + while (i--) { + const key = keys[i]; + if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) { + delete this[key]; + deleted = true; + } + } + + return deleted; + } + + normalize(format) { + const self = this; + const headers = {}; + + utils$1.forEach(this, (value, header) => { + const key = utils$1.findKey(headers, header); + + if (key) { + self[key] = normalizeValue(value); + delete self[header]; + return; + } + + const normalized = format ? formatHeader(header) : String(header).trim(); + + if (normalized !== header) { + delete self[header]; + } + + self[normalized] = normalizeValue(value); + + headers[normalized] = true; + }); + + return this; + } + + concat(...targets) { + return this.constructor.concat(this, ...targets); + } + + toJSON(asStrings) { + const obj = Object.create(null); + + utils$1.forEach(this, (value, header) => { + value != null && value !== false && (obj[header] = asStrings && utils$1.isArray(value) ? value.join(', ') : value); + }); + + return obj; + } + + [Symbol.iterator]() { + return Object.entries(this.toJSON())[Symbol.iterator](); + } + + toString() { + return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\n'); + } + + getSetCookie() { + return this.get("set-cookie") || []; + } + + get [Symbol.toStringTag]() { + return 'AxiosHeaders'; + } + + static from(thing) { + return thing instanceof this ? thing : new this(thing); + } + + static concat(first, ...targets) { + const computed = new this(first); + + targets.forEach((target) => computed.set(target)); + + return computed; + } + + static accessor(header) { + const internals = this[$internals] = (this[$internals] = { + accessors: {} + }); + + const accessors = internals.accessors; + const prototype = this.prototype; + + function defineAccessor(_header) { + const lHeader = normalizeHeader(_header); + + if (!accessors[lHeader]) { + buildAccessors(prototype, _header); + accessors[lHeader] = true; + } + } + + utils$1.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header); + + return this; + } +} + +AxiosHeaders$1.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']); + +// reserved names hotfix +utils$1.reduceDescriptors(AxiosHeaders$1.prototype, ({value}, key) => { + let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set` + return { + get: () => value, + set(headerValue) { + this[mapped] = headerValue; + } + } +}); + +utils$1.freezeMethods(AxiosHeaders$1); + +const AxiosHeaders$2 = AxiosHeaders$1; + +/** + * Transform the data for a request or a response + * + * @param {Array|Function} fns A single function or Array of functions + * @param {?Object} response The response object + * + * @returns {*} The resulting transformed data + */ +function transformData(fns, response) { + const config = this || defaults$1; + const context = response || config; + const headers = AxiosHeaders$2.from(context.headers); + let data = context.data; + + utils$1.forEach(fns, function transform(fn) { + data = fn.call(config, data, headers.normalize(), response ? response.status : undefined); + }); + + headers.normalize(); + + return data; +} + +function isCancel$1(value) { + return !!(value && value.__CANCEL__); +} + +/** + * A `CanceledError` is an object that is thrown when an operation is canceled. + * + * @param {string=} message The message. + * @param {Object=} config The config. + * @param {Object=} request The request. + * + * @returns {CanceledError} The created error. + */ +function CanceledError$1(message, config, request) { + // eslint-disable-next-line no-eq-null,eqeqeq + AxiosError$1.call(this, message == null ? 'canceled' : message, AxiosError$1.ERR_CANCELED, config, request); + this.name = 'CanceledError'; +} + +utils$1.inherits(CanceledError$1, AxiosError$1, { + __CANCEL__: true +}); + +/** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + * + * @returns {object} The response. + */ +function settle(resolve, reject, response) { + const validateStatus = response.config.validateStatus; + if (!response.status || !validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(new AxiosError$1( + 'Request failed with status code ' + response.status, + [AxiosError$1.ERR_BAD_REQUEST, AxiosError$1.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4], + response.config, + response.request, + response + )); + } +} + +function parseProtocol(url) { + const match = /^([-+\w]{1,25})(:?\/\/|:)/.exec(url); + return match && match[1] || ''; +} + +/** + * Calculate data maxRate + * @param {Number} [samplesCount= 10] + * @param {Number} [min= 1000] + * @returns {Function} + */ +function speedometer(samplesCount, min) { + samplesCount = samplesCount || 10; + const bytes = new Array(samplesCount); + const timestamps = new Array(samplesCount); + let head = 0; + let tail = 0; + let firstSampleTS; + + min = min !== undefined ? min : 1000; + + return function push(chunkLength) { + const now = Date.now(); + + const startedAt = timestamps[tail]; + + if (!firstSampleTS) { + firstSampleTS = now; + } + + bytes[head] = chunkLength; + timestamps[head] = now; + + let i = tail; + let bytesCount = 0; + + while (i !== head) { + bytesCount += bytes[i++]; + i = i % samplesCount; + } + + head = (head + 1) % samplesCount; + + if (head === tail) { + tail = (tail + 1) % samplesCount; + } + + if (now - firstSampleTS < min) { + return; + } + + const passed = startedAt && now - startedAt; + + return passed ? Math.round(bytesCount * 1000 / passed) : undefined; + }; +} + +/** + * Throttle decorator + * @param {Function} fn + * @param {Number} freq + * @return {Function} + */ +function throttle(fn, freq) { + let timestamp = 0; + let threshold = 1000 / freq; + let lastArgs; + let timer; + + const invoke = (args, now = Date.now()) => { + timestamp = now; + lastArgs = null; + if (timer) { + clearTimeout(timer); + timer = null; + } + fn.apply(null, args); + }; + + const throttled = (...args) => { + const now = Date.now(); + const passed = now - timestamp; + if ( passed >= threshold) { + invoke(args, now); + } else { + lastArgs = args; + if (!timer) { + timer = setTimeout(() => { + timer = null; + invoke(lastArgs); + }, threshold - passed); + } + } + }; + + const flush = () => lastArgs && invoke(lastArgs); + + return [throttled, flush]; +} + +const progressEventReducer = (listener, isDownloadStream, freq = 3) => { + let bytesNotified = 0; + const _speedometer = speedometer(50, 250); + + return throttle(e => { + const loaded = e.loaded; + const total = e.lengthComputable ? e.total : undefined; + const progressBytes = loaded - bytesNotified; + const rate = _speedometer(progressBytes); + const inRange = loaded <= total; + + bytesNotified = loaded; + + const data = { + loaded, + total, + progress: total ? (loaded / total) : undefined, + bytes: progressBytes, + rate: rate ? rate : undefined, + estimated: rate && total && inRange ? (total - loaded) / rate : undefined, + event: e, + lengthComputable: total != null, + [isDownloadStream ? 'download' : 'upload']: true + }; + + listener(data); + }, freq); +}; + +const progressEventDecorator = (total, throttled) => { + const lengthComputable = total != null; + + return [(loaded) => throttled[0]({ + lengthComputable, + total, + loaded + }), throttled[1]]; +}; + +const asyncDecorator = (fn) => (...args) => utils$1.asap(() => fn(...args)); + +const isURLSameOrigin = platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => { + url = new URL(url, platform.origin); + + return ( + origin.protocol === url.protocol && + origin.host === url.host && + (isMSIE || origin.port === url.port) + ); +})( + new URL(platform.origin), + platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent) +) : () => true; + +const cookies = platform.hasStandardBrowserEnv ? + + // Standard browser envs support document.cookie + { + write(name, value, expires, path, domain, secure) { + const cookie = [name + '=' + encodeURIComponent(value)]; + + utils$1.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString()); + + utils$1.isString(path) && cookie.push('path=' + path); + + utils$1.isString(domain) && cookie.push('domain=' + domain); + + secure === true && cookie.push('secure'); + + document.cookie = cookie.join('; '); + }, + + read(name) { + const match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return (match ? decodeURIComponent(match[3]) : null); + }, + + remove(name) { + this.write(name, '', Date.now() - 86400000); + } + } + + : + + // Non-standard browser env (web workers, react-native) lack needed support. + { + write() {}, + read() { + return null; + }, + remove() {} + }; + +/** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ +function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url); +} + +/** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * + * @returns {string} The combined URL + */ +function combineURLs(baseURL, relativeURL) { + return relativeURL + ? baseURL.replace(/\/?\/$/, '') + '/' + relativeURL.replace(/^\/+/, '') + : baseURL; +} + +/** + * Creates a new URL by combining the baseURL with the requestedURL, + * only when the requestedURL is not already an absolute URL. + * If the requestURL is absolute, this function returns the requestedURL untouched. + * + * @param {string} baseURL The base URL + * @param {string} requestedURL Absolute or relative URL to combine + * + * @returns {string} The combined full path + */ +function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) { + let isRelativeUrl = !isAbsoluteURL(requestedURL); + if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) { + return combineURLs(baseURL, requestedURL); + } + return requestedURL; +} + +const headersToObject = (thing) => thing instanceof AxiosHeaders$2 ? { ...thing } : thing; + +/** + * Config-specific merge-function which creates a new config-object + * by merging two configuration objects together. + * + * @param {Object} config1 + * @param {Object} config2 + * + * @returns {Object} New object resulting from merging config2 to config1 + */ +function mergeConfig$1(config1, config2) { + // eslint-disable-next-line no-param-reassign + config2 = config2 || {}; + const config = {}; + + function getMergedValue(target, source, prop, caseless) { + if (utils$1.isPlainObject(target) && utils$1.isPlainObject(source)) { + return utils$1.merge.call({caseless}, target, source); + } else if (utils$1.isPlainObject(source)) { + return utils$1.merge({}, source); + } else if (utils$1.isArray(source)) { + return source.slice(); + } + return source; + } + + // eslint-disable-next-line consistent-return + function mergeDeepProperties(a, b, prop , caseless) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(a, b, prop , caseless); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a, prop , caseless); + } + } + + // eslint-disable-next-line consistent-return + function valueFromConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } + } + + // eslint-disable-next-line consistent-return + function defaultToConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a); + } + } + + // eslint-disable-next-line consistent-return + function mergeDirectKeys(a, b, prop) { + if (prop in config2) { + return getMergedValue(a, b); + } else if (prop in config1) { + return getMergedValue(undefined, a); + } + } + + const mergeMap = { + url: valueFromConfig2, + method: valueFromConfig2, + data: valueFromConfig2, + baseURL: defaultToConfig2, + transformRequest: defaultToConfig2, + transformResponse: defaultToConfig2, + paramsSerializer: defaultToConfig2, + timeout: defaultToConfig2, + timeoutMessage: defaultToConfig2, + withCredentials: defaultToConfig2, + withXSRFToken: defaultToConfig2, + adapter: defaultToConfig2, + responseType: defaultToConfig2, + xsrfCookieName: defaultToConfig2, + xsrfHeaderName: defaultToConfig2, + onUploadProgress: defaultToConfig2, + onDownloadProgress: defaultToConfig2, + decompress: defaultToConfig2, + maxContentLength: defaultToConfig2, + maxBodyLength: defaultToConfig2, + beforeRedirect: defaultToConfig2, + transport: defaultToConfig2, + httpAgent: defaultToConfig2, + httpsAgent: defaultToConfig2, + cancelToken: defaultToConfig2, + socketPath: defaultToConfig2, + responseEncoding: defaultToConfig2, + validateStatus: mergeDirectKeys, + headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true) + }; + + utils$1.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) { + const merge = mergeMap[prop] || mergeDeepProperties; + const configValue = merge(config1[prop], config2[prop], prop); + (utils$1.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue); + }); + + return config; +} + +const resolveConfig = (config) => { + const newConfig = mergeConfig$1({}, config); + + let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig; + + newConfig.headers = headers = AxiosHeaders$2.from(headers); + + newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer); + + // HTTP basic authentication + if (auth) { + headers.set('Authorization', 'Basic ' + + btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : '')) + ); + } + + let contentType; + + if (utils$1.isFormData(data)) { + if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) { + headers.setContentType(undefined); // Let the browser set it + } else if ((contentType = headers.getContentType()) !== false) { + // fix semicolon duplication issue for ReactNative FormData implementation + const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : []; + headers.setContentType([type || 'multipart/form-data', ...tokens].join('; ')); + } + } + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + + if (platform.hasStandardBrowserEnv) { + withXSRFToken && utils$1.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig)); + + if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) { + // Add xsrf header + const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName); + + if (xsrfValue) { + headers.set(xsrfHeaderName, xsrfValue); + } + } + } + + return newConfig; +}; + +const isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined'; + +const xhrAdapter = isXHRAdapterSupported && function (config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + const _config = resolveConfig(config); + let requestData = _config.data; + const requestHeaders = AxiosHeaders$2.from(_config.headers).normalize(); + let {responseType, onUploadProgress, onDownloadProgress} = _config; + let onCanceled; + let uploadThrottled, downloadThrottled; + let flushUpload, flushDownload; + + function done() { + flushUpload && flushUpload(); // flush events + flushDownload && flushDownload(); // flush events + + _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled); + + _config.signal && _config.signal.removeEventListener('abort', onCanceled); + } + + let request = new XMLHttpRequest(); + + request.open(_config.method.toUpperCase(), _config.url, true); + + // Set the request timeout in MS + request.timeout = _config.timeout; + + function onloadend() { + if (!request) { + return; + } + // Prepare the response + const responseHeaders = AxiosHeaders$2.from( + 'getAllResponseHeaders' in request && request.getAllResponseHeaders() + ); + const responseData = !responseType || responseType === 'text' || responseType === 'json' ? + request.responseText : request.response; + const response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config, + request + }; + + settle(function _resolve(value) { + resolve(value); + done(); + }, function _reject(err) { + reject(err); + done(); + }, response); + + // Clean up request + request = null; + } + + if ('onloadend' in request) { + // Use onloadend if available + request.onloadend = onloadend; + } else { + // Listen for ready state to emulate onloadend + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + // readystate handler is calling before onerror or ontimeout handlers, + // so we should call onloadend on the next 'tick' + setTimeout(onloadend); + }; + } + + // Handle browser request cancellation (as opposed to a manual cancellation) + request.onabort = function handleAbort() { + if (!request) { + return; + } + + reject(new AxiosError$1('Request aborted', AxiosError$1.ECONNABORTED, config, request)); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(new AxiosError$1('Network Error', AxiosError$1.ERR_NETWORK, config, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded'; + const transitional = _config.transitional || transitionalDefaults; + if (_config.timeoutErrorMessage) { + timeoutErrorMessage = _config.timeoutErrorMessage; + } + reject(new AxiosError$1( + timeoutErrorMessage, + transitional.clarifyTimeoutError ? AxiosError$1.ETIMEDOUT : AxiosError$1.ECONNABORTED, + config, + request)); + + // Clean up request + request = null; + }; + + // Remove Content-Type if data is undefined + requestData === undefined && requestHeaders.setContentType(null); + + // Add headers to the request + if ('setRequestHeader' in request) { + utils$1.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) { + request.setRequestHeader(key, val); + }); + } + + // Add withCredentials to request if needed + if (!utils$1.isUndefined(_config.withCredentials)) { + request.withCredentials = !!_config.withCredentials; + } + + // Add responseType to request if needed + if (responseType && responseType !== 'json') { + request.responseType = _config.responseType; + } + + // Handle progress if needed + if (onDownloadProgress) { + ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true)); + request.addEventListener('progress', downloadThrottled); + } + + // Not all browsers support upload events + if (onUploadProgress && request.upload) { + ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress)); + + request.upload.addEventListener('progress', uploadThrottled); + + request.upload.addEventListener('loadend', flushUpload); + } + + if (_config.cancelToken || _config.signal) { + // Handle cancellation + // eslint-disable-next-line func-names + onCanceled = cancel => { + if (!request) { + return; + } + reject(!cancel || cancel.type ? new CanceledError$1(null, config, request) : cancel); + request.abort(); + request = null; + }; + + _config.cancelToken && _config.cancelToken.subscribe(onCanceled); + if (_config.signal) { + _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled); + } + } + + const protocol = parseProtocol(_config.url); + + if (protocol && platform.protocols.indexOf(protocol) === -1) { + reject(new AxiosError$1('Unsupported protocol ' + protocol + ':', AxiosError$1.ERR_BAD_REQUEST, config)); + return; + } + + + // Send the request + request.send(requestData || null); + }); +}; + +const composeSignals = (signals, timeout) => { + const {length} = (signals = signals ? signals.filter(Boolean) : []); + + if (timeout || length) { + let controller = new AbortController(); + + let aborted; + + const onabort = function (reason) { + if (!aborted) { + aborted = true; + unsubscribe(); + const err = reason instanceof Error ? reason : this.reason; + controller.abort(err instanceof AxiosError$1 ? err : new CanceledError$1(err instanceof Error ? err.message : err)); + } + }; + + let timer = timeout && setTimeout(() => { + timer = null; + onabort(new AxiosError$1(`timeout ${timeout} of ms exceeded`, AxiosError$1.ETIMEDOUT)); + }, timeout); + + const unsubscribe = () => { + if (signals) { + timer && clearTimeout(timer); + timer = null; + signals.forEach(signal => { + signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort); + }); + signals = null; + } + }; + + signals.forEach((signal) => signal.addEventListener('abort', onabort)); + + const {signal} = controller; + + signal.unsubscribe = () => utils$1.asap(unsubscribe); + + return signal; + } +}; + +const composeSignals$1 = composeSignals; + +const streamChunk = function* (chunk, chunkSize) { + let len = chunk.byteLength; + + if (!chunkSize || len < chunkSize) { + yield chunk; + return; + } + + let pos = 0; + let end; + + while (pos < len) { + end = pos + chunkSize; + yield chunk.slice(pos, end); + pos = end; + } +}; + +const readBytes = async function* (iterable, chunkSize) { + for await (const chunk of readStream(iterable)) { + yield* streamChunk(chunk, chunkSize); + } +}; + +const readStream = async function* (stream) { + if (stream[Symbol.asyncIterator]) { + yield* stream; + return; + } + + const reader = stream.getReader(); + try { + for (;;) { + const {done, value} = await reader.read(); + if (done) { + break; + } + yield value; + } + } finally { + await reader.cancel(); + } +}; + +const trackStream = (stream, chunkSize, onProgress, onFinish) => { + const iterator = readBytes(stream, chunkSize); + + let bytes = 0; + let done; + let _onFinish = (e) => { + if (!done) { + done = true; + onFinish && onFinish(e); + } + }; + + return new ReadableStream({ + async pull(controller) { + try { + const {done, value} = await iterator.next(); + + if (done) { + _onFinish(); + controller.close(); + return; + } + + let len = value.byteLength; + if (onProgress) { + let loadedBytes = bytes += len; + onProgress(loadedBytes); + } + controller.enqueue(new Uint8Array(value)); + } catch (err) { + _onFinish(err); + throw err; + } + }, + cancel(reason) { + _onFinish(reason); + return iterator.return(); + } + }, { + highWaterMark: 2 + }) +}; + +const isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function'; +const isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function'; + +// used only inside the fetch adapter +const encodeText = isFetchSupported && (typeof TextEncoder === 'function' ? + ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) : + async (str) => new Uint8Array(await new Response(str).arrayBuffer()) +); + +const test = (fn, ...args) => { + try { + return !!fn(...args); + } catch (e) { + return false + } +}; + +const supportsRequestStream = isReadableStreamSupported && test(() => { + let duplexAccessed = false; + + const hasContentType = new Request(platform.origin, { + body: new ReadableStream(), + method: 'POST', + get duplex() { + duplexAccessed = true; + return 'half'; + }, + }).headers.has('Content-Type'); + + return duplexAccessed && !hasContentType; +}); + +const DEFAULT_CHUNK_SIZE = 64 * 1024; + +const supportsResponseStream = isReadableStreamSupported && + test(() => utils$1.isReadableStream(new Response('').body)); + + +const resolvers = { + stream: supportsResponseStream && ((res) => res.body) +}; + +isFetchSupported && (((res) => { + ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => { + !resolvers[type] && (resolvers[type] = utils$1.isFunction(res[type]) ? (res) => res[type]() : + (_, config) => { + throw new AxiosError$1(`Response type '${type}' is not supported`, AxiosError$1.ERR_NOT_SUPPORT, config); + }); + }); +})(new Response)); + +const getBodyLength = async (body) => { + if (body == null) { + return 0; + } + + if(utils$1.isBlob(body)) { + return body.size; + } + + if(utils$1.isSpecCompliantForm(body)) { + const _request = new Request(platform.origin, { + method: 'POST', + body, + }); + return (await _request.arrayBuffer()).byteLength; + } + + if(utils$1.isArrayBufferView(body) || utils$1.isArrayBuffer(body)) { + return body.byteLength; + } + + if(utils$1.isURLSearchParams(body)) { + body = body + ''; + } + + if(utils$1.isString(body)) { + return (await encodeText(body)).byteLength; + } +}; + +const resolveBodyLength = async (headers, body) => { + const length = utils$1.toFiniteNumber(headers.getContentLength()); + + return length == null ? getBodyLength(body) : length; +}; + +const fetchAdapter = isFetchSupported && (async (config) => { + let { + url, + method, + data, + signal, + cancelToken, + timeout, + onDownloadProgress, + onUploadProgress, + responseType, + headers, + withCredentials = 'same-origin', + fetchOptions + } = resolveConfig(config); + + responseType = responseType ? (responseType + '').toLowerCase() : 'text'; + + let composedSignal = composeSignals$1([signal, cancelToken && cancelToken.toAbortSignal()], timeout); + + let request; + + const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => { + composedSignal.unsubscribe(); + }); + + let requestContentLength; + + try { + if ( + onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' && + (requestContentLength = await resolveBodyLength(headers, data)) !== 0 + ) { + let _request = new Request(url, { + method: 'POST', + body: data, + duplex: "half" + }); + + let contentTypeHeader; + + if (utils$1.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) { + headers.setContentType(contentTypeHeader); + } + + if (_request.body) { + const [onProgress, flush] = progressEventDecorator( + requestContentLength, + progressEventReducer(asyncDecorator(onUploadProgress)) + ); + + data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush); + } + } + + if (!utils$1.isString(withCredentials)) { + withCredentials = withCredentials ? 'include' : 'omit'; + } + + // Cloudflare Workers throws when credentials are defined + // see https://github.com/cloudflare/workerd/issues/902 + const isCredentialsSupported = "credentials" in Request.prototype; + request = new Request(url, { + ...fetchOptions, + signal: composedSignal, + method: method.toUpperCase(), + headers: headers.normalize().toJSON(), + body: data, + duplex: "half", + credentials: isCredentialsSupported ? withCredentials : undefined + }); + + let response = await fetch(request, fetchOptions); + + const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response'); + + if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) { + const options = {}; + + ['status', 'statusText', 'headers'].forEach(prop => { + options[prop] = response[prop]; + }); + + const responseContentLength = utils$1.toFiniteNumber(response.headers.get('content-length')); + + const [onProgress, flush] = onDownloadProgress && progressEventDecorator( + responseContentLength, + progressEventReducer(asyncDecorator(onDownloadProgress), true) + ) || []; + + response = new Response( + trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => { + flush && flush(); + unsubscribe && unsubscribe(); + }), + options + ); + } + + responseType = responseType || 'text'; + + let responseData = await resolvers[utils$1.findKey(resolvers, responseType) || 'text'](response, config); + + !isStreamResponse && unsubscribe && unsubscribe(); + + return await new Promise((resolve, reject) => { + settle(resolve, reject, { + data: responseData, + headers: AxiosHeaders$2.from(response.headers), + status: response.status, + statusText: response.statusText, + config, + request + }); + }) + } catch (err) { + unsubscribe && unsubscribe(); + + if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) { + throw Object.assign( + new AxiosError$1('Network Error', AxiosError$1.ERR_NETWORK, config, request), + { + cause: err.cause || err + } + ) + } + + throw AxiosError$1.from(err, err && err.code, config, request); + } +}); + +const knownAdapters = { + http: httpAdapter, + xhr: xhrAdapter, + fetch: fetchAdapter +}; + +utils$1.forEach(knownAdapters, (fn, value) => { + if (fn) { + try { + Object.defineProperty(fn, 'name', {value}); + } catch (e) { + // eslint-disable-next-line no-empty + } + Object.defineProperty(fn, 'adapterName', {value}); + } +}); + +const renderReason = (reason) => `- ${reason}`; + +const isResolvedHandle = (adapter) => utils$1.isFunction(adapter) || adapter === null || adapter === false; + +const adapters = { + getAdapter: (adapters) => { + adapters = utils$1.isArray(adapters) ? adapters : [adapters]; + + const {length} = adapters; + let nameOrAdapter; + let adapter; + + const rejectedReasons = {}; + + for (let i = 0; i < length; i++) { + nameOrAdapter = adapters[i]; + let id; + + adapter = nameOrAdapter; + + if (!isResolvedHandle(nameOrAdapter)) { + adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()]; + + if (adapter === undefined) { + throw new AxiosError$1(`Unknown adapter '${id}'`); + } + } + + if (adapter) { + break; + } + + rejectedReasons[id || '#' + i] = adapter; + } + + if (!adapter) { + + const reasons = Object.entries(rejectedReasons) + .map(([id, state]) => `adapter ${id} ` + + (state === false ? 'is not supported by the environment' : 'is not available in the build') + ); + + let s = length ? + (reasons.length > 1 ? 'since :\n' + reasons.map(renderReason).join('\n') : ' ' + renderReason(reasons[0])) : + 'as no adapter specified'; + + throw new AxiosError$1( + `There is no suitable adapter to dispatch the request ` + s, + 'ERR_NOT_SUPPORT' + ); + } + + return adapter; + }, + adapters: knownAdapters +}; + +/** + * Throws a `CanceledError` if cancellation has been requested. + * + * @param {Object} config The config that is to be used for the request + * + * @returns {void} + */ +function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } + + if (config.signal && config.signal.aborted) { + throw new CanceledError$1(null, config); + } +} + +/** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * + * @returns {Promise} The Promise to be fulfilled + */ +function dispatchRequest(config) { + throwIfCancellationRequested(config); + + config.headers = AxiosHeaders$2.from(config.headers); + + // Transform request data + config.data = transformData.call( + config, + config.transformRequest + ); + + if (['post', 'put', 'patch'].indexOf(config.method) !== -1) { + config.headers.setContentType('application/x-www-form-urlencoded', false); + } + + const adapter = adapters.getAdapter(config.adapter || defaults$1.adapter); + + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData.call( + config, + config.transformResponse, + response + ); + + response.headers = AxiosHeaders$2.from(response.headers); + + return response; + }, function onAdapterRejection(reason) { + if (!isCancel$1(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData.call( + config, + config.transformResponse, + reason.response + ); + reason.response.headers = AxiosHeaders$2.from(reason.response.headers); + } + } + + return Promise.reject(reason); + }); +} + +const VERSION$1 = "1.10.0"; + +const validators$1 = {}; + +// eslint-disable-next-line func-names +['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => { + validators$1[type] = function validator(thing) { + return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type; + }; +}); + +const deprecatedWarnings = {}; + +/** + * Transitional option validator + * + * @param {function|boolean?} validator - set to false if the transitional option has been removed + * @param {string?} version - deprecated version / removed since version + * @param {string?} message - some message with additional info + * + * @returns {function} + */ +validators$1.transitional = function transitional(validator, version, message) { + function formatMessage(opt, desc) { + return '[Axios v' + VERSION$1 + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : ''); + } + + // eslint-disable-next-line func-names + return (value, opt, opts) => { + if (validator === false) { + throw new AxiosError$1( + formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')), + AxiosError$1.ERR_DEPRECATED + ); + } + + if (version && !deprecatedWarnings[opt]) { + deprecatedWarnings[opt] = true; + // eslint-disable-next-line no-console + console.warn( + formatMessage( + opt, + ' has been deprecated since v' + version + ' and will be removed in the near future' + ) + ); + } + + return validator ? validator(value, opt, opts) : true; + }; +}; + +validators$1.spelling = function spelling(correctSpelling) { + return (value, opt) => { + // eslint-disable-next-line no-console + console.warn(`${opt} is likely a misspelling of ${correctSpelling}`); + return true; + } +}; + +/** + * Assert object's properties type + * + * @param {object} options + * @param {object} schema + * @param {boolean?} allowUnknown + * + * @returns {object} + */ + +function assertOptions(options, schema, allowUnknown) { + if (typeof options !== 'object') { + throw new AxiosError$1('options must be an object', AxiosError$1.ERR_BAD_OPTION_VALUE); + } + const keys = Object.keys(options); + let i = keys.length; + while (i-- > 0) { + const opt = keys[i]; + const validator = schema[opt]; + if (validator) { + const value = options[opt]; + const result = value === undefined || validator(value, opt, options); + if (result !== true) { + throw new AxiosError$1('option ' + opt + ' must be ' + result, AxiosError$1.ERR_BAD_OPTION_VALUE); + } + continue; + } + if (allowUnknown !== true) { + throw new AxiosError$1('Unknown option ' + opt, AxiosError$1.ERR_BAD_OPTION); + } + } +} + +const validator = { + assertOptions, + validators: validators$1 +}; + +const validators = validator.validators; + +/** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + * + * @return {Axios} A new instance of Axios + */ +class Axios$1 { + constructor(instanceConfig) { + this.defaults = instanceConfig || {}; + this.interceptors = { + request: new InterceptorManager$1(), + response: new InterceptorManager$1() + }; + } + + /** + * Dispatch a request + * + * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults) + * @param {?Object} config + * + * @returns {Promise} The Promise to be fulfilled + */ + async request(configOrUrl, config) { + try { + return await this._request(configOrUrl, config); + } catch (err) { + if (err instanceof Error) { + let dummy = {}; + + Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error()); + + // slice off the Error: ... line + const stack = dummy.stack ? dummy.stack.replace(/^.+\n/, '') : ''; + try { + if (!err.stack) { + err.stack = stack; + // match without the 2 top stack lines + } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\n.+\n/, ''))) { + err.stack += '\n' + stack; + } + } catch (e) { + // ignore the case where "stack" is an un-writable property + } + } + + throw err; + } + } + + _request(configOrUrl, config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof configOrUrl === 'string') { + config = config || {}; + config.url = configOrUrl; + } else { + config = configOrUrl || {}; + } + + config = mergeConfig$1(this.defaults, config); + + const {transitional, paramsSerializer, headers} = config; + + if (transitional !== undefined) { + validator.assertOptions(transitional, { + silentJSONParsing: validators.transitional(validators.boolean), + forcedJSONParsing: validators.transitional(validators.boolean), + clarifyTimeoutError: validators.transitional(validators.boolean) + }, false); + } + + if (paramsSerializer != null) { + if (utils$1.isFunction(paramsSerializer)) { + config.paramsSerializer = { + serialize: paramsSerializer + }; + } else { + validator.assertOptions(paramsSerializer, { + encode: validators.function, + serialize: validators.function + }, true); + } + } + + // Set config.allowAbsoluteUrls + if (config.allowAbsoluteUrls !== undefined) ; else if (this.defaults.allowAbsoluteUrls !== undefined) { + config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls; + } else { + config.allowAbsoluteUrls = true; + } + + validator.assertOptions(config, { + baseUrl: validators.spelling('baseURL'), + withXsrfToken: validators.spelling('withXSRFToken') + }, true); + + // Set config.method + config.method = (config.method || this.defaults.method || 'get').toLowerCase(); + + // Flatten headers + let contextHeaders = headers && utils$1.merge( + headers.common, + headers[config.method] + ); + + headers && utils$1.forEach( + ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], + (method) => { + delete headers[method]; + } + ); + + config.headers = AxiosHeaders$2.concat(contextHeaders, headers); + + // filter out skipped interceptors + const requestInterceptorChain = []; + let synchronousRequestInterceptors = true; + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) { + return; + } + + synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous; + + requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + + const responseInterceptorChain = []; + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected); + }); + + let promise; + let i = 0; + let len; + + if (!synchronousRequestInterceptors) { + const chain = [dispatchRequest.bind(this), undefined]; + chain.unshift.apply(chain, requestInterceptorChain); + chain.push.apply(chain, responseInterceptorChain); + len = chain.length; + + promise = Promise.resolve(config); + + while (i < len) { + promise = promise.then(chain[i++], chain[i++]); + } + + return promise; + } + + len = requestInterceptorChain.length; + + let newConfig = config; + + i = 0; + + while (i < len) { + const onFulfilled = requestInterceptorChain[i++]; + const onRejected = requestInterceptorChain[i++]; + try { + newConfig = onFulfilled(newConfig); + } catch (error) { + onRejected.call(this, error); + break; + } + } + + try { + promise = dispatchRequest.call(this, newConfig); + } catch (error) { + return Promise.reject(error); + } + + i = 0; + len = responseInterceptorChain.length; + + while (i < len) { + promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]); + } + + return promise; + } + + getUri(config) { + config = mergeConfig$1(this.defaults, config); + const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + return buildURL(fullPath, config.params, config.paramsSerializer); + } +} + +// Provide aliases for supported request methods +utils$1.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios$1.prototype[method] = function(url, config) { + return this.request(mergeConfig$1(config || {}, { + method, + url, + data: (config || {}).data + })); + }; +}); + +utils$1.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + + function generateHTTPMethod(isForm) { + return function httpMethod(url, data, config) { + return this.request(mergeConfig$1(config || {}, { + method, + headers: isForm ? { + 'Content-Type': 'multipart/form-data' + } : {}, + url, + data + })); + }; + } + + Axios$1.prototype[method] = generateHTTPMethod(); + + Axios$1.prototype[method + 'Form'] = generateHTTPMethod(true); +}); + +const Axios$2 = Axios$1; + +/** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @param {Function} executor The executor function. + * + * @returns {CancelToken} + */ +class CancelToken$1 { + constructor(executor) { + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + + let resolvePromise; + + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + + const token = this; + + // eslint-disable-next-line func-names + this.promise.then(cancel => { + if (!token._listeners) return; + + let i = token._listeners.length; + + while (i-- > 0) { + token._listeners[i](cancel); + } + token._listeners = null; + }); + + // eslint-disable-next-line func-names + this.promise.then = onfulfilled => { + let _resolve; + // eslint-disable-next-line func-names + const promise = new Promise(resolve => { + token.subscribe(resolve); + _resolve = resolve; + }).then(onfulfilled); + + promise.cancel = function reject() { + token.unsubscribe(_resolve); + }; + + return promise; + }; + + executor(function cancel(message, config, request) { + if (token.reason) { + // Cancellation has already been requested + return; + } + + token.reason = new CanceledError$1(message, config, request); + resolvePromise(token.reason); + }); + } + + /** + * Throws a `CanceledError` if cancellation has been requested. + */ + throwIfRequested() { + if (this.reason) { + throw this.reason; + } + } + + /** + * Subscribe to the cancel signal + */ + + subscribe(listener) { + if (this.reason) { + listener(this.reason); + return; + } + + if (this._listeners) { + this._listeners.push(listener); + } else { + this._listeners = [listener]; + } + } + + /** + * Unsubscribe from the cancel signal + */ + + unsubscribe(listener) { + if (!this._listeners) { + return; + } + const index = this._listeners.indexOf(listener); + if (index !== -1) { + this._listeners.splice(index, 1); + } + } + + toAbortSignal() { + const controller = new AbortController(); + + const abort = (err) => { + controller.abort(err); + }; + + this.subscribe(abort); + + controller.signal.unsubscribe = () => this.unsubscribe(abort); + + return controller.signal; + } + + /** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ + static source() { + let cancel; + const token = new CancelToken$1(function executor(c) { + cancel = c; + }); + return { + token, + cancel + }; + } +} + +const CancelToken$2 = CancelToken$1; + +/** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * + * @returns {Function} + */ +function spread$1(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; +} + +/** + * Determines whether the payload is an error thrown by Axios + * + * @param {*} payload The value to test + * + * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false + */ +function isAxiosError$1(payload) { + return utils$1.isObject(payload) && (payload.isAxiosError === true); +} + +const HttpStatusCode$1 = { + Continue: 100, + SwitchingProtocols: 101, + Processing: 102, + EarlyHints: 103, + Ok: 200, + Created: 201, + Accepted: 202, + NonAuthoritativeInformation: 203, + NoContent: 204, + ResetContent: 205, + PartialContent: 206, + MultiStatus: 207, + AlreadyReported: 208, + ImUsed: 226, + MultipleChoices: 300, + MovedPermanently: 301, + Found: 302, + SeeOther: 303, + NotModified: 304, + UseProxy: 305, + Unused: 306, + TemporaryRedirect: 307, + PermanentRedirect: 308, + BadRequest: 400, + Unauthorized: 401, + PaymentRequired: 402, + Forbidden: 403, + NotFound: 404, + MethodNotAllowed: 405, + NotAcceptable: 406, + ProxyAuthenticationRequired: 407, + RequestTimeout: 408, + Conflict: 409, + Gone: 410, + LengthRequired: 411, + PreconditionFailed: 412, + PayloadTooLarge: 413, + UriTooLong: 414, + UnsupportedMediaType: 415, + RangeNotSatisfiable: 416, + ExpectationFailed: 417, + ImATeapot: 418, + MisdirectedRequest: 421, + UnprocessableEntity: 422, + Locked: 423, + FailedDependency: 424, + TooEarly: 425, + UpgradeRequired: 426, + PreconditionRequired: 428, + TooManyRequests: 429, + RequestHeaderFieldsTooLarge: 431, + UnavailableForLegalReasons: 451, + InternalServerError: 500, + NotImplemented: 501, + BadGateway: 502, + ServiceUnavailable: 503, + GatewayTimeout: 504, + HttpVersionNotSupported: 505, + VariantAlsoNegotiates: 506, + InsufficientStorage: 507, + LoopDetected: 508, + NotExtended: 510, + NetworkAuthenticationRequired: 511, +}; + +Object.entries(HttpStatusCode$1).forEach(([key, value]) => { + HttpStatusCode$1[value] = key; +}); + +const HttpStatusCode$2 = HttpStatusCode$1; + +/** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * + * @returns {Axios} A new instance of Axios + */ +function createInstance(defaultConfig) { + const context = new Axios$2(defaultConfig); + const instance = bind(Axios$2.prototype.request, context); + + // Copy axios.prototype to instance + utils$1.extend(instance, Axios$2.prototype, context, {allOwnKeys: true}); + + // Copy context to instance + utils$1.extend(instance, context, null, {allOwnKeys: true}); + + // Factory for creating new instances + instance.create = function create(instanceConfig) { + return createInstance(mergeConfig$1(defaultConfig, instanceConfig)); + }; + + return instance; +} + +// Create the default instance to be exported +const axios = createInstance(defaults$1); + +// Expose Axios class to allow class inheritance +axios.Axios = Axios$2; + +// Expose Cancel & CancelToken +axios.CanceledError = CanceledError$1; +axios.CancelToken = CancelToken$2; +axios.isCancel = isCancel$1; +axios.VERSION = VERSION$1; +axios.toFormData = toFormData$1; + +// Expose AxiosError class +axios.AxiosError = AxiosError$1; + +// alias for CanceledError for backward compatibility +axios.Cancel = axios.CanceledError; + +// Expose all/spread +axios.all = function all(promises) { + return Promise.all(promises); +}; + +axios.spread = spread$1; + +// Expose isAxiosError +axios.isAxiosError = isAxiosError$1; + +// Expose mergeConfig +axios.mergeConfig = mergeConfig$1; + +axios.AxiosHeaders = AxiosHeaders$2; + +axios.formToJSON = thing => formDataToJSON(utils$1.isHTMLForm(thing) ? new FormData(thing) : thing); + +axios.getAdapter = adapters.getAdapter; + +axios.HttpStatusCode = HttpStatusCode$2; + +axios.default = axios; + +// this module should only have a default export +const axios$1 = axios; + +// This module is intended to unwrap Axios default export as named. +// Keep top-level export same with static properties +// so that it can keep same with es module or cjs +const { + Axios, + AxiosError, + CanceledError, + isCancel, + CancelToken, + VERSION, + all, + Cancel, + isAxiosError, + spread, + toFormData, + AxiosHeaders, + HttpStatusCode, + formToJSON, + getAdapter, + mergeConfig +} = axios$1; + +export { Axios, AxiosError, AxiosHeaders, Cancel, CancelToken, CanceledError, HttpStatusCode, VERSION, all, axios$1 as default, formToJSON, getAdapter, isAxiosError, isCancel, mergeConfig, spread, toFormData }; +//# sourceMappingURL=axios.js.map diff --git a/node_modules/axios/dist/esm/axios.js.map b/node_modules/axios/dist/esm/axios.js.map new file mode 100644 index 0000000..e422f6e --- /dev/null +++ b/node_modules/axios/dist/esm/axios.js.map @@ -0,0 +1 @@ +{"version":3,"file":"axios.js","sources":["../../lib/helpers/bind.js","../../lib/utils.js","../../lib/core/AxiosError.js","../../lib/helpers/null.js","../../lib/helpers/toFormData.js","../../lib/helpers/AxiosURLSearchParams.js","../../lib/helpers/buildURL.js","../../lib/core/InterceptorManager.js","../../lib/defaults/transitional.js","../../lib/platform/browser/classes/URLSearchParams.js","../../lib/platform/browser/classes/FormData.js","../../lib/platform/browser/classes/Blob.js","../../lib/platform/browser/index.js","../../lib/platform/common/utils.js","../../lib/platform/index.js","../../lib/helpers/toURLEncodedForm.js","../../lib/helpers/formDataToJSON.js","../../lib/defaults/index.js","../../lib/helpers/parseHeaders.js","../../lib/core/AxiosHeaders.js","../../lib/core/transformData.js","../../lib/cancel/isCancel.js","../../lib/cancel/CanceledError.js","../../lib/core/settle.js","../../lib/helpers/parseProtocol.js","../../lib/helpers/speedometer.js","../../lib/helpers/throttle.js","../../lib/helpers/progressEventReducer.js","../../lib/helpers/isURLSameOrigin.js","../../lib/helpers/cookies.js","../../lib/helpers/isAbsoluteURL.js","../../lib/helpers/combineURLs.js","../../lib/core/buildFullPath.js","../../lib/core/mergeConfig.js","../../lib/helpers/resolveConfig.js","../../lib/adapters/xhr.js","../../lib/helpers/composeSignals.js","../../lib/helpers/trackStream.js","../../lib/adapters/fetch.js","../../lib/adapters/adapters.js","../../lib/core/dispatchRequest.js","../../lib/env/data.js","../../lib/helpers/validator.js","../../lib/core/Axios.js","../../lib/cancel/CancelToken.js","../../lib/helpers/spread.js","../../lib/helpers/isAxiosError.js","../../lib/helpers/HttpStatusCode.js","../../lib/axios.js","../../index.js"],"sourcesContent":["'use strict';\n\nexport default function bind(fn, thisArg) {\n return function wrap() {\n return fn.apply(thisArg, arguments);\n };\n}\n","'use strict';\n\nimport bind from './helpers/bind.js';\n\n// utils is a library of generic helper functions non-specific to axios\n\nconst {toString} = Object.prototype;\nconst {getPrototypeOf} = Object;\nconst {iterator, toStringTag} = Symbol;\n\nconst kindOf = (cache => thing => {\n const str = toString.call(thing);\n return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());\n})(Object.create(null));\n\nconst kindOfTest = (type) => {\n type = type.toLowerCase();\n return (thing) => kindOf(thing) === type\n}\n\nconst typeOfTest = type => thing => typeof thing === type;\n\n/**\n * Determine if a value is an Array\n *\n * @param {Object} val The value to test\n *\n * @returns {boolean} True if value is an Array, otherwise false\n */\nconst {isArray} = Array;\n\n/**\n * Determine if a value is undefined\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) {\n result = ArrayBuffer.isView(val);\n } else {\n result = (val) && (val.buffer) && (isArrayBuffer(val.buffer));\n }\n return result;\n}\n\n/**\n * Determine if a value is a String\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a String, otherwise false\n */\nconst isString = typeOfTest('string');\n\n/**\n * Determine if a value is a Function\n *\n * @param {*} val The value to test\n * @returns {boolean} True if value is a Function, otherwise false\n */\nconst isFunction = typeOfTest('function');\n\n/**\n * Determine if a value is a Number\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Number, otherwise false\n */\nconst isNumber = typeOfTest('number');\n\n/**\n * Determine if a value is an Object\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an Object, otherwise false\n */\nconst isObject = (thing) => thing !== null && typeof thing === 'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\nconst [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest);\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[iterator];\n\n const _iterator = generator.call(obj);\n\n let result;\n\n while ((result = _iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n return value != null && Number.isFinite(value = +value) ? value : defaultValue;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\n// original code\n// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34\n\nconst _setImmediate = ((setImmediateSupported, postMessageSupported) => {\n if (setImmediateSupported) {\n return setImmediate;\n }\n\n return postMessageSupported ? ((token, callbacks) => {\n _global.addEventListener(\"message\", ({source, data}) => {\n if (source === _global && data === token) {\n callbacks.length && callbacks.shift()();\n }\n }, false);\n\n return (cb) => {\n callbacks.push(cb);\n _global.postMessage(token, \"*\");\n }\n })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb);\n})(\n typeof setImmediate === 'function',\n isFunction(_global.postMessage)\n);\n\nconst asap = typeof queueMicrotask !== 'undefined' ?\n queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate);\n\n// *********************\n\n\nconst isIterable = (thing) => thing != null && isFunction(thing[iterator]);\n\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isReadableStream,\n isRequest,\n isResponse,\n isHeaders,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable,\n setImmediate: _setImmediate,\n asap,\n isIterable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n if (response) {\n this.response = response;\n this.status = response.status ? response.status : null;\n }\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.status\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","// eslint-disable-next-line strict\nexport default null;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (utils.isBoolean(value)) {\n return value.toString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?(object|Function)} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n if (utils.isFunction(options)) {\n options = {\n serialize: options\n };\n } \n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","'use strict';\n\nimport AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';\nexport default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;\n","'use strict';\n\nexport default typeof FormData !== 'undefined' ? FormData : null;\n","'use strict'\n\nexport default typeof Blob !== 'undefined' ? Blob : null\n","import URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\nimport Blob from './classes/Blob.js'\n\nexport default {\n isBrowser: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob\n },\n protocols: ['http', 'https', 'file', 'blob', 'url', 'data']\n};\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nconst _navigator = typeof navigator === 'object' && navigator || undefined;\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = hasBrowserEnv &&\n (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nconst origin = hasBrowserEnv && window.location.href || 'http://localhost';\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv,\n _navigator as navigator,\n origin\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n\n if (name === '__proto__') return true;\n\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http', 'fetch'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data) ||\n utils.isReadableStream(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (utils.isResponse(data) || utils.isReadableStream(data)) {\n return data;\n }\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else if (utils.isObject(header) && utils.isIterable(header)) {\n let obj = {}, dest, key;\n for (const entry of header) {\n if (!utils.isArray(entry)) {\n throw TypeError('Object iterator must return a key-value pair');\n }\n\n obj[key = entry[0]] = (dest = obj[key]) ?\n (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1];\n }\n\n setHeaders(obj, valueOrRewrite)\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n getSetCookie() {\n return this.get(\"set-cookie\") || [];\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","/**\n * Throttle decorator\n * @param {Function} fn\n * @param {Number} freq\n * @return {Function}\n */\nfunction throttle(fn, freq) {\n let timestamp = 0;\n let threshold = 1000 / freq;\n let lastArgs;\n let timer;\n\n const invoke = (args, now = Date.now()) => {\n timestamp = now;\n lastArgs = null;\n if (timer) {\n clearTimeout(timer);\n timer = null;\n }\n fn.apply(null, args);\n }\n\n const throttled = (...args) => {\n const now = Date.now();\n const passed = now - timestamp;\n if ( passed >= threshold) {\n invoke(args, now);\n } else {\n lastArgs = args;\n if (!timer) {\n timer = setTimeout(() => {\n timer = null;\n invoke(lastArgs)\n }, threshold - passed);\n }\n }\n }\n\n const flush = () => lastArgs && invoke(lastArgs);\n\n return [throttled, flush];\n}\n\nexport default throttle;\n","import speedometer from \"./speedometer.js\";\nimport throttle from \"./throttle.js\";\nimport utils from \"../utils.js\";\n\nexport const progressEventReducer = (listener, isDownloadStream, freq = 3) => {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return throttle(e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e,\n lengthComputable: total != null,\n [isDownloadStream ? 'download' : 'upload']: true\n };\n\n listener(data);\n }, freq);\n}\n\nexport const progressEventDecorator = (total, throttled) => {\n const lengthComputable = total != null;\n\n return [(loaded) => throttled[0]({\n lengthComputable,\n total,\n loaded\n }), throttled[1]];\n}\n\nexport const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args));\n","import platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {\n url = new URL(url, platform.origin);\n\n return (\n origin.protocol === url.protocol &&\n origin.host === url.host &&\n (isMSIE || origin.port === url.port)\n );\n})(\n new URL(platform.origin),\n platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)\n) : () => true;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/?\\/$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {\n let isRelativeUrl = !isAbsoluteURL(requestedURL);\n if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, prop, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, prop , caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, prop , caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, prop , caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport isURLSameOrigin from \"./isURLSameOrigin.js\";\nimport cookies from \"./cookies.js\";\nimport buildFullPath from \"../core/buildFullPath.js\";\nimport mergeConfig from \"../core/mergeConfig.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport buildURL from \"./buildURL.js\";\n\nexport default (config) => {\n const newConfig = mergeConfig({}, config);\n\n let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;\n\n newConfig.headers = headers = AxiosHeaders.from(headers);\n\n newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);\n\n // HTTP basic authentication\n if (auth) {\n headers.set('Authorization', 'Basic ' +\n btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))\n );\n }\n\n let contentType;\n\n if (utils.isFormData(data)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n headers.setContentType(undefined); // Let the browser set it\n } else if ((contentType = headers.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n\n if (platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {\n // Add xsrf header\n const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);\n\n if (xsrfValue) {\n headers.set(xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n return newConfig;\n}\n\n","import utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport {progressEventReducer} from '../helpers/progressEventReducer.js';\nimport resolveConfig from \"../helpers/resolveConfig.js\";\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n const _config = resolveConfig(config);\n let requestData = _config.data;\n const requestHeaders = AxiosHeaders.from(_config.headers).normalize();\n let {responseType, onUploadProgress, onDownloadProgress} = _config;\n let onCanceled;\n let uploadThrottled, downloadThrottled;\n let flushUpload, flushDownload;\n\n function done() {\n flushUpload && flushUpload(); // flush events\n flushDownload && flushDownload(); // flush events\n\n _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);\n\n _config.signal && _config.signal.removeEventListener('abort', onCanceled);\n }\n\n let request = new XMLHttpRequest();\n\n request.open(_config.method.toUpperCase(), _config.url, true);\n\n // Set the request timeout in MS\n request.timeout = _config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = _config.transitional || transitionalDefaults;\n if (_config.timeoutErrorMessage) {\n timeoutErrorMessage = _config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(_config.withCredentials)) {\n request.withCredentials = !!_config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = _config.responseType;\n }\n\n // Handle progress if needed\n if (onDownloadProgress) {\n ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));\n request.addEventListener('progress', downloadThrottled);\n }\n\n // Not all browsers support upload events\n if (onUploadProgress && request.upload) {\n ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));\n\n request.upload.addEventListener('progress', uploadThrottled);\n\n request.upload.addEventListener('loadend', flushUpload);\n }\n\n if (_config.cancelToken || _config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n _config.cancelToken && _config.cancelToken.subscribe(onCanceled);\n if (_config.signal) {\n _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(_config.url);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","import CanceledError from \"../cancel/CanceledError.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport utils from '../utils.js';\n\nconst composeSignals = (signals, timeout) => {\n const {length} = (signals = signals ? signals.filter(Boolean) : []);\n\n if (timeout || length) {\n let controller = new AbortController();\n\n let aborted;\n\n const onabort = function (reason) {\n if (!aborted) {\n aborted = true;\n unsubscribe();\n const err = reason instanceof Error ? reason : this.reason;\n controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));\n }\n }\n\n let timer = timeout && setTimeout(() => {\n timer = null;\n onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))\n }, timeout)\n\n const unsubscribe = () => {\n if (signals) {\n timer && clearTimeout(timer);\n timer = null;\n signals.forEach(signal => {\n signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);\n });\n signals = null;\n }\n }\n\n signals.forEach((signal) => signal.addEventListener('abort', onabort));\n\n const {signal} = controller;\n\n signal.unsubscribe = () => utils.asap(unsubscribe);\n\n return signal;\n }\n}\n\nexport default composeSignals;\n","\nexport const streamChunk = function* (chunk, chunkSize) {\n let len = chunk.byteLength;\n\n if (!chunkSize || len < chunkSize) {\n yield chunk;\n return;\n }\n\n let pos = 0;\n let end;\n\n while (pos < len) {\n end = pos + chunkSize;\n yield chunk.slice(pos, end);\n pos = end;\n }\n}\n\nexport const readBytes = async function* (iterable, chunkSize) {\n for await (const chunk of readStream(iterable)) {\n yield* streamChunk(chunk, chunkSize);\n }\n}\n\nconst readStream = async function* (stream) {\n if (stream[Symbol.asyncIterator]) {\n yield* stream;\n return;\n }\n\n const reader = stream.getReader();\n try {\n for (;;) {\n const {done, value} = await reader.read();\n if (done) {\n break;\n }\n yield value;\n }\n } finally {\n await reader.cancel();\n }\n}\n\nexport const trackStream = (stream, chunkSize, onProgress, onFinish) => {\n const iterator = readBytes(stream, chunkSize);\n\n let bytes = 0;\n let done;\n let _onFinish = (e) => {\n if (!done) {\n done = true;\n onFinish && onFinish(e);\n }\n }\n\n return new ReadableStream({\n async pull(controller) {\n try {\n const {done, value} = await iterator.next();\n\n if (done) {\n _onFinish();\n controller.close();\n return;\n }\n\n let len = value.byteLength;\n if (onProgress) {\n let loadedBytes = bytes += len;\n onProgress(loadedBytes);\n }\n controller.enqueue(new Uint8Array(value));\n } catch (err) {\n _onFinish(err);\n throw err;\n }\n },\n cancel(reason) {\n _onFinish(reason);\n return iterator.return();\n }\n }, {\n highWaterMark: 2\n })\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport composeSignals from \"../helpers/composeSignals.js\";\nimport {trackStream} from \"../helpers/trackStream.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\nimport resolveConfig from \"../helpers/resolveConfig.js\";\nimport settle from \"../core/settle.js\";\n\nconst isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function';\nconst isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function';\n\n// used only inside the fetch adapter\nconst encodeText = isFetchSupported && (typeof TextEncoder === 'function' ?\n ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) :\n async (str) => new Uint8Array(await new Response(str).arrayBuffer())\n);\n\nconst test = (fn, ...args) => {\n try {\n return !!fn(...args);\n } catch (e) {\n return false\n }\n}\n\nconst supportsRequestStream = isReadableStreamSupported && test(() => {\n let duplexAccessed = false;\n\n const hasContentType = new Request(platform.origin, {\n body: new ReadableStream(),\n method: 'POST',\n get duplex() {\n duplexAccessed = true;\n return 'half';\n },\n }).headers.has('Content-Type');\n\n return duplexAccessed && !hasContentType;\n});\n\nconst DEFAULT_CHUNK_SIZE = 64 * 1024;\n\nconst supportsResponseStream = isReadableStreamSupported &&\n test(() => utils.isReadableStream(new Response('').body));\n\n\nconst resolvers = {\n stream: supportsResponseStream && ((res) => res.body)\n};\n\nisFetchSupported && (((res) => {\n ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => {\n !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() :\n (_, config) => {\n throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config);\n })\n });\n})(new Response));\n\nconst getBodyLength = async (body) => {\n if (body == null) {\n return 0;\n }\n\n if(utils.isBlob(body)) {\n return body.size;\n }\n\n if(utils.isSpecCompliantForm(body)) {\n const _request = new Request(platform.origin, {\n method: 'POST',\n body,\n });\n return (await _request.arrayBuffer()).byteLength;\n }\n\n if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) {\n return body.byteLength;\n }\n\n if(utils.isURLSearchParams(body)) {\n body = body + '';\n }\n\n if(utils.isString(body)) {\n return (await encodeText(body)).byteLength;\n }\n}\n\nconst resolveBodyLength = async (headers, body) => {\n const length = utils.toFiniteNumber(headers.getContentLength());\n\n return length == null ? getBodyLength(body) : length;\n}\n\nexport default isFetchSupported && (async (config) => {\n let {\n url,\n method,\n data,\n signal,\n cancelToken,\n timeout,\n onDownloadProgress,\n onUploadProgress,\n responseType,\n headers,\n withCredentials = 'same-origin',\n fetchOptions\n } = resolveConfig(config);\n\n responseType = responseType ? (responseType + '').toLowerCase() : 'text';\n\n let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout);\n\n let request;\n\n const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => {\n composedSignal.unsubscribe();\n });\n\n let requestContentLength;\n\n try {\n if (\n onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' &&\n (requestContentLength = await resolveBodyLength(headers, data)) !== 0\n ) {\n let _request = new Request(url, {\n method: 'POST',\n body: data,\n duplex: \"half\"\n });\n\n let contentTypeHeader;\n\n if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) {\n headers.setContentType(contentTypeHeader)\n }\n\n if (_request.body) {\n const [onProgress, flush] = progressEventDecorator(\n requestContentLength,\n progressEventReducer(asyncDecorator(onUploadProgress))\n );\n\n data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush);\n }\n }\n\n if (!utils.isString(withCredentials)) {\n withCredentials = withCredentials ? 'include' : 'omit';\n }\n\n // Cloudflare Workers throws when credentials are defined\n // see https://github.com/cloudflare/workerd/issues/902\n const isCredentialsSupported = \"credentials\" in Request.prototype;\n request = new Request(url, {\n ...fetchOptions,\n signal: composedSignal,\n method: method.toUpperCase(),\n headers: headers.normalize().toJSON(),\n body: data,\n duplex: \"half\",\n credentials: isCredentialsSupported ? withCredentials : undefined\n });\n\n let response = await fetch(request, fetchOptions);\n\n const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response');\n\n if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) {\n const options = {};\n\n ['status', 'statusText', 'headers'].forEach(prop => {\n options[prop] = response[prop];\n });\n\n const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length'));\n\n const [onProgress, flush] = onDownloadProgress && progressEventDecorator(\n responseContentLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true)\n ) || [];\n\n response = new Response(\n trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => {\n flush && flush();\n unsubscribe && unsubscribe();\n }),\n options\n );\n }\n\n responseType = responseType || 'text';\n\n let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config);\n\n !isStreamResponse && unsubscribe && unsubscribe();\n\n return await new Promise((resolve, reject) => {\n settle(resolve, reject, {\n data: responseData,\n headers: AxiosHeaders.from(response.headers),\n status: response.status,\n statusText: response.statusText,\n config,\n request\n })\n })\n } catch (err) {\n unsubscribe && unsubscribe();\n\n if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) {\n throw Object.assign(\n new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request),\n {\n cause: err.cause || err\n }\n )\n }\n\n throw AxiosError.from(err, err && err.code, config, request);\n }\n});\n\n\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport fetchAdapter from './fetch.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter,\n fetch: fetchAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","export const VERSION = \"1.10.0\";","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\nvalidators.spelling = function spelling(correctSpelling) {\n return (value, opt) => {\n // eslint-disable-next-line no-console\n console.warn(`${opt} is likely a misspelling of ${correctSpelling}`);\n return true;\n }\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig || {};\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n async request(configOrUrl, config) {\n try {\n return await this._request(configOrUrl, config);\n } catch (err) {\n if (err instanceof Error) {\n let dummy = {};\n\n Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error());\n\n // slice off the Error: ... line\n const stack = dummy.stack ? dummy.stack.replace(/^.+\\n/, '') : '';\n try {\n if (!err.stack) {\n err.stack = stack;\n // match without the 2 top stack lines\n } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\\n.+\\n/, ''))) {\n err.stack += '\\n' + stack\n }\n } catch (e) {\n // ignore the case where \"stack\" is an un-writable property\n }\n }\n\n throw err;\n }\n }\n\n _request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.allowAbsoluteUrls\n if (config.allowAbsoluteUrls !== undefined) {\n // do nothing\n } else if (this.defaults.allowAbsoluteUrls !== undefined) {\n config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls;\n } else {\n config.allowAbsoluteUrls = true;\n }\n\n validator.assertOptions(config, {\n baseUrl: validators.spelling('baseURL'),\n withXsrfToken: validators.spelling('withXSRFToken')\n }, true);\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n toAbortSignal() {\n const controller = new AbortController();\n\n const abort = (err) => {\n controller.abort(err);\n };\n\n this.subscribe(abort);\n\n controller.signal.unsubscribe = () => this.unsubscribe(abort);\n\n return controller.signal;\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","'use strict';\n\n/**\n * Syntactic sugar for invoking a function and expanding an array for arguments.\n *\n * Common use case would be to use `Function.prototype.apply`.\n *\n * ```js\n * function f(x, y, z) {}\n * var args = [1, 2, 3];\n * f.apply(null, args);\n * ```\n *\n * With `spread` this example can be re-written.\n *\n * ```js\n * spread(function(x, y, z) {})([1, 2, 3]);\n * ```\n *\n * @param {Function} callback\n *\n * @returns {Function}\n */\nexport default function spread(callback) {\n return function wrap(arr) {\n return callback.apply(null, arr);\n };\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n/**\n * Determines whether the payload is an error thrown by Axios\n *\n * @param {*} payload The value to test\n *\n * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false\n */\nexport default function isAxiosError(payload) {\n return utils.isObject(payload) && (payload.isAxiosError === true);\n}\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n ResetContent: 205,\n PartialContent: 206,\n MultiStatus: 207,\n AlreadyReported: 208,\n ImUsed: 226,\n MultipleChoices: 300,\n MovedPermanently: 301,\n Found: 302,\n SeeOther: 303,\n NotModified: 304,\n UseProxy: 305,\n Unused: 306,\n TemporaryRedirect: 307,\n PermanentRedirect: 308,\n BadRequest: 400,\n Unauthorized: 401,\n PaymentRequired: 402,\n Forbidden: 403,\n NotFound: 404,\n MethodNotAllowed: 405,\n NotAcceptable: 406,\n ProxyAuthenticationRequired: 407,\n RequestTimeout: 408,\n Conflict: 409,\n Gone: 410,\n LengthRequired: 411,\n PreconditionFailed: 412,\n PayloadTooLarge: 413,\n UriTooLong: 414,\n UnsupportedMediaType: 415,\n RangeNotSatisfiable: 416,\n ExpectationFailed: 417,\n ImATeapot: 418,\n MisdirectedRequest: 421,\n UnprocessableEntity: 422,\n Locked: 423,\n FailedDependency: 424,\n TooEarly: 425,\n UpgradeRequired: 426,\n PreconditionRequired: 428,\n TooManyRequests: 429,\n RequestHeaderFieldsTooLarge: 431,\n UnavailableForLegalReasons: 451,\n InternalServerError: 500,\n NotImplemented: 501,\n BadGateway: 502,\n ServiceUnavailable: 503,\n GatewayTimeout: 504,\n HttpVersionNotSupported: 505,\n VariantAlsoNegotiates: 506,\n InsufficientStorage: 507,\n LoopDetected: 508,\n NotExtended: 510,\n NetworkAuthenticationRequired: 511,\n};\n\nObject.entries(HttpStatusCode).forEach(([key, value]) => {\n HttpStatusCode[value] = key;\n});\n\nexport default HttpStatusCode;\n","'use strict';\n\nimport utils from './utils.js';\nimport bind from './helpers/bind.js';\nimport Axios from './core/Axios.js';\nimport mergeConfig from './core/mergeConfig.js';\nimport defaults from './defaults/index.js';\nimport formDataToJSON from './helpers/formDataToJSON.js';\nimport CanceledError from './cancel/CanceledError.js';\nimport CancelToken from './cancel/CancelToken.js';\nimport isCancel from './cancel/isCancel.js';\nimport {VERSION} from './env/data.js';\nimport toFormData from './helpers/toFormData.js';\nimport AxiosError from './core/AxiosError.js';\nimport spread from './helpers/spread.js';\nimport isAxiosError from './helpers/isAxiosError.js';\nimport AxiosHeaders from \"./core/AxiosHeaders.js\";\nimport adapters from './adapters/adapters.js';\nimport HttpStatusCode from './helpers/HttpStatusCode.js';\n\n/**\n * Create an instance of Axios\n *\n * @param {Object} defaultConfig The default config for the instance\n *\n * @returns {Axios} A new instance of Axios\n */\nfunction createInstance(defaultConfig) {\n const context = new Axios(defaultConfig);\n const instance = bind(Axios.prototype.request, context);\n\n // Copy axios.prototype to instance\n utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});\n\n // Copy context to instance\n utils.extend(instance, context, null, {allOwnKeys: true});\n\n // Factory for creating new instances\n instance.create = function create(instanceConfig) {\n return createInstance(mergeConfig(defaultConfig, instanceConfig));\n };\n\n return instance;\n}\n\n// Create the default instance to be exported\nconst axios = createInstance(defaults);\n\n// Expose Axios class to allow class inheritance\naxios.Axios = Axios;\n\n// Expose Cancel & CancelToken\naxios.CanceledError = CanceledError;\naxios.CancelToken = CancelToken;\naxios.isCancel = isCancel;\naxios.VERSION = VERSION;\naxios.toFormData = toFormData;\n\n// Expose AxiosError class\naxios.AxiosError = AxiosError;\n\n// alias for CanceledError for backward compatibility\naxios.Cancel = axios.CanceledError;\n\n// Expose all/spread\naxios.all = function all(promises) {\n return Promise.all(promises);\n};\n\naxios.spread = spread;\n\n// Expose isAxiosError\naxios.isAxiosError = isAxiosError;\n\n// Expose mergeConfig\naxios.mergeConfig = mergeConfig;\n\naxios.AxiosHeaders = AxiosHeaders;\n\naxios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);\n\naxios.getAdapter = adapters.getAdapter;\n\naxios.HttpStatusCode = HttpStatusCode;\n\naxios.default = axios;\n\n// this module should only have a default export\nexport default axios\n","import axios from './lib/axios.js';\n\n// This module is intended to unwrap Axios default export as named.\n// Keep top-level export same with static properties\n// so that it can keep same with es module or cjs\nconst {\n Axios,\n AxiosError,\n CanceledError,\n isCancel,\n CancelToken,\n VERSION,\n all,\n Cancel,\n isAxiosError,\n spread,\n toFormData,\n AxiosHeaders,\n HttpStatusCode,\n formToJSON,\n getAdapter,\n mergeConfig\n} = axios;\n\nexport {\n axios as default,\n Axios,\n AxiosError,\n CanceledError,\n isCancel,\n CancelToken,\n VERSION,\n all,\n Cancel,\n isAxiosError,\n spread,\n toFormData,\n AxiosHeaders,\n HttpStatusCode,\n formToJSON,\n getAdapter,\n 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strict';\n\nexport default function bind(fn, thisArg) {\n return function wrap() {\n return fn.apply(thisArg, arguments);\n };\n}\n","'use strict';\n\nimport bind from './helpers/bind.js';\n\n// utils is a library of generic helper functions non-specific to axios\n\nconst {toString} = Object.prototype;\nconst {getPrototypeOf} = Object;\nconst {iterator, toStringTag} = Symbol;\n\nconst kindOf = (cache => thing => {\n const str = toString.call(thing);\n return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());\n})(Object.create(null));\n\nconst kindOfTest = (type) => {\n type = type.toLowerCase();\n return (thing) => kindOf(thing) === type\n}\n\nconst typeOfTest = type => thing => typeof thing === type;\n\n/**\n * Determine if a value is an Array\n *\n * @param {Object} val The value to test\n *\n * @returns {boolean} True if value is an Array, otherwise false\n */\nconst {isArray} = Array;\n\n/**\n * Determine if a value is undefined\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) {\n result = ArrayBuffer.isView(val);\n } else {\n result = (val) && (val.buffer) && (isArrayBuffer(val.buffer));\n }\n return result;\n}\n\n/**\n * Determine if a value is a String\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a String, otherwise false\n */\nconst isString = typeOfTest('string');\n\n/**\n * Determine if a value is a Function\n *\n * @param {*} val The value to test\n * @returns {boolean} True if value is a Function, otherwise false\n */\nconst isFunction = typeOfTest('function');\n\n/**\n * Determine if a value is a Number\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Number, otherwise false\n */\nconst isNumber = typeOfTest('number');\n\n/**\n * Determine if a value is an Object\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an Object, otherwise false\n */\nconst isObject = (thing) => thing !== null && typeof thing === 'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\nconst [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest);\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[iterator];\n\n const _iterator = generator.call(obj);\n\n let result;\n\n while ((result = _iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n return value != null && Number.isFinite(value = +value) ? value : defaultValue;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\n// original code\n// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34\n\nconst _setImmediate = ((setImmediateSupported, postMessageSupported) => {\n if (setImmediateSupported) {\n return setImmediate;\n }\n\n return postMessageSupported ? ((token, callbacks) => {\n _global.addEventListener(\"message\", ({source, data}) => {\n if (source === _global && data === token) {\n callbacks.length && callbacks.shift()();\n }\n }, false);\n\n return (cb) => {\n callbacks.push(cb);\n _global.postMessage(token, \"*\");\n }\n })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb);\n})(\n typeof setImmediate === 'function',\n isFunction(_global.postMessage)\n);\n\nconst asap = typeof queueMicrotask !== 'undefined' ?\n queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate);\n\n// *********************\n\n\nconst isIterable = (thing) => thing != null && isFunction(thing[iterator]);\n\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isReadableStream,\n isRequest,\n isResponse,\n isHeaders,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable,\n setImmediate: _setImmediate,\n asap,\n isIterable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n if (response) {\n this.response = response;\n this.status = response.status ? response.status : null;\n }\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.status\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (utils.isBoolean(value)) {\n return value.toString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?(object|Function)} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n if (utils.isFunction(options)) {\n options = {\n serialize: options\n };\n } \n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","import URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\nimport Blob from './classes/Blob.js'\n\nexport default {\n isBrowser: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob\n },\n protocols: ['http', 'https', 'file', 'blob', 'url', 'data']\n};\n","'use strict';\n\nimport AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';\nexport default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;\n","'use strict';\n\nexport default typeof FormData !== 'undefined' ? FormData : null;\n","'use strict'\n\nexport default typeof Blob !== 'undefined' ? Blob : null\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nconst _navigator = typeof navigator === 'object' && navigator || undefined;\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = hasBrowserEnv &&\n (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nconst origin = hasBrowserEnv && window.location.href || 'http://localhost';\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv,\n _navigator as navigator,\n origin\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n\n if (name === '__proto__') return true;\n\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http', 'fetch'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data) ||\n utils.isReadableStream(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (utils.isResponse(data) || utils.isReadableStream(data)) {\n return data;\n }\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else if (utils.isObject(header) && utils.isIterable(header)) {\n let obj = {}, dest, key;\n for (const entry of header) {\n if (!utils.isArray(entry)) {\n throw TypeError('Object iterator must return a key-value pair');\n }\n\n obj[key = entry[0]] = (dest = obj[key]) ?\n (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1];\n }\n\n setHeaders(obj, valueOrRewrite)\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n getSetCookie() {\n return this.get(\"set-cookie\") || [];\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","import speedometer from \"./speedometer.js\";\nimport throttle from \"./throttle.js\";\nimport utils from \"../utils.js\";\n\nexport const progressEventReducer = (listener, isDownloadStream, freq = 3) => {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return throttle(e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e,\n lengthComputable: total != null,\n [isDownloadStream ? 'download' : 'upload']: true\n };\n\n listener(data);\n }, freq);\n}\n\nexport const progressEventDecorator = (total, throttled) => {\n const lengthComputable = total != null;\n\n return [(loaded) => throttled[0]({\n lengthComputable,\n total,\n loaded\n }), throttled[1]];\n}\n\nexport const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args));\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","/**\n * Throttle decorator\n * @param {Function} fn\n * @param {Number} freq\n * @return {Function}\n */\nfunction throttle(fn, freq) {\n let timestamp = 0;\n let threshold = 1000 / freq;\n let lastArgs;\n let timer;\n\n const invoke = (args, now = Date.now()) => {\n timestamp = now;\n lastArgs = null;\n if (timer) {\n clearTimeout(timer);\n timer = null;\n }\n fn.apply(null, args);\n }\n\n const throttled = (...args) => {\n const now = Date.now();\n const passed = now - timestamp;\n if ( passed >= threshold) {\n invoke(args, now);\n } else {\n lastArgs = args;\n if (!timer) {\n timer = setTimeout(() => {\n timer = null;\n invoke(lastArgs)\n }, threshold - passed);\n }\n }\n }\n\n const flush = () => lastArgs && invoke(lastArgs);\n\n return [throttled, flush];\n}\n\nexport default throttle;\n","import platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {\n url = new URL(url, platform.origin);\n\n return (\n origin.protocol === url.protocol &&\n origin.host === url.host &&\n (isMSIE || origin.port === url.port)\n );\n})(\n new URL(platform.origin),\n platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)\n) : () => true;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {\n let isRelativeUrl = !isAbsoluteURL(requestedURL);\n if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/?\\/$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, prop, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, prop , caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, prop , caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, prop , caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport isURLSameOrigin from \"./isURLSameOrigin.js\";\nimport cookies from \"./cookies.js\";\nimport buildFullPath from \"../core/buildFullPath.js\";\nimport mergeConfig from \"../core/mergeConfig.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport buildURL from \"./buildURL.js\";\n\nexport default (config) => {\n const newConfig = mergeConfig({}, config);\n\n let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;\n\n newConfig.headers = headers = AxiosHeaders.from(headers);\n\n newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);\n\n // HTTP basic authentication\n if (auth) {\n headers.set('Authorization', 'Basic ' +\n btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))\n );\n }\n\n let contentType;\n\n if (utils.isFormData(data)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n headers.setContentType(undefined); // Let the browser set it\n } else if ((contentType = headers.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n\n if (platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {\n // Add xsrf header\n const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);\n\n if (xsrfValue) {\n headers.set(xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n return newConfig;\n}\n\n","import utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport {progressEventReducer} from '../helpers/progressEventReducer.js';\nimport resolveConfig from \"../helpers/resolveConfig.js\";\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n const _config = resolveConfig(config);\n let requestData = _config.data;\n const requestHeaders = AxiosHeaders.from(_config.headers).normalize();\n let {responseType, onUploadProgress, onDownloadProgress} = _config;\n let onCanceled;\n let uploadThrottled, downloadThrottled;\n let flushUpload, flushDownload;\n\n function done() {\n flushUpload && flushUpload(); // flush events\n flushDownload && flushDownload(); // flush events\n\n _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);\n\n _config.signal && _config.signal.removeEventListener('abort', onCanceled);\n }\n\n let request = new XMLHttpRequest();\n\n request.open(_config.method.toUpperCase(), _config.url, true);\n\n // Set the request timeout in MS\n request.timeout = _config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = _config.transitional || transitionalDefaults;\n if (_config.timeoutErrorMessage) {\n timeoutErrorMessage = _config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(_config.withCredentials)) {\n request.withCredentials = !!_config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = _config.responseType;\n }\n\n // Handle progress if needed\n if (onDownloadProgress) {\n ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));\n request.addEventListener('progress', downloadThrottled);\n }\n\n // Not all browsers support upload events\n if (onUploadProgress && request.upload) {\n ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));\n\n request.upload.addEventListener('progress', uploadThrottled);\n\n request.upload.addEventListener('loadend', flushUpload);\n }\n\n if (_config.cancelToken || _config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n _config.cancelToken && _config.cancelToken.subscribe(onCanceled);\n if (_config.signal) {\n _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(_config.url);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","import CanceledError from \"../cancel/CanceledError.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport utils from '../utils.js';\n\nconst composeSignals = (signals, timeout) => {\n const {length} = (signals = signals ? signals.filter(Boolean) : []);\n\n if (timeout || length) {\n let controller = new AbortController();\n\n let aborted;\n\n const onabort = function (reason) {\n if (!aborted) {\n aborted = true;\n unsubscribe();\n const err = reason instanceof Error ? reason : this.reason;\n controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));\n }\n }\n\n let timer = timeout && setTimeout(() => {\n timer = null;\n onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))\n }, timeout)\n\n const unsubscribe = () => {\n if (signals) {\n timer && clearTimeout(timer);\n timer = null;\n signals.forEach(signal => {\n signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);\n });\n signals = null;\n }\n }\n\n signals.forEach((signal) => signal.addEventListener('abort', onabort));\n\n const {signal} = controller;\n\n signal.unsubscribe = () => utils.asap(unsubscribe);\n\n return signal;\n }\n}\n\nexport default composeSignals;\n","\nexport const streamChunk = function* (chunk, chunkSize) {\n let len = chunk.byteLength;\n\n if (!chunkSize || len < chunkSize) {\n yield chunk;\n return;\n }\n\n let pos = 0;\n let end;\n\n while (pos < len) {\n end = pos + chunkSize;\n yield chunk.slice(pos, end);\n pos = end;\n }\n}\n\nexport const readBytes = async function* (iterable, chunkSize) {\n for await (const chunk of readStream(iterable)) {\n yield* streamChunk(chunk, chunkSize);\n }\n}\n\nconst readStream = async function* (stream) {\n if (stream[Symbol.asyncIterator]) {\n yield* stream;\n return;\n }\n\n const reader = stream.getReader();\n try {\n for (;;) {\n const {done, value} = await reader.read();\n if (done) {\n break;\n }\n yield value;\n }\n } finally {\n await reader.cancel();\n }\n}\n\nexport const trackStream = (stream, chunkSize, onProgress, onFinish) => {\n const iterator = readBytes(stream, chunkSize);\n\n let bytes = 0;\n let done;\n let _onFinish = (e) => {\n if (!done) {\n done = true;\n onFinish && onFinish(e);\n }\n }\n\n return new ReadableStream({\n async pull(controller) {\n try {\n const {done, value} = await iterator.next();\n\n if (done) {\n _onFinish();\n controller.close();\n return;\n }\n\n let len = value.byteLength;\n if (onProgress) {\n let loadedBytes = bytes += len;\n onProgress(loadedBytes);\n }\n controller.enqueue(new Uint8Array(value));\n } catch (err) {\n _onFinish(err);\n throw err;\n }\n },\n cancel(reason) {\n _onFinish(reason);\n return iterator.return();\n }\n }, {\n highWaterMark: 2\n })\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport composeSignals from \"../helpers/composeSignals.js\";\nimport {trackStream} from \"../helpers/trackStream.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\nimport resolveConfig from \"../helpers/resolveConfig.js\";\nimport settle from \"../core/settle.js\";\n\nconst isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function';\nconst isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function';\n\n// used only inside the fetch adapter\nconst encodeText = isFetchSupported && (typeof TextEncoder === 'function' ?\n ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) :\n async (str) => new Uint8Array(await new Response(str).arrayBuffer())\n);\n\nconst test = (fn, ...args) => {\n try {\n return !!fn(...args);\n } catch (e) {\n return false\n }\n}\n\nconst supportsRequestStream = isReadableStreamSupported && test(() => {\n let duplexAccessed = false;\n\n const hasContentType = new Request(platform.origin, {\n body: new ReadableStream(),\n method: 'POST',\n get duplex() {\n duplexAccessed = true;\n return 'half';\n },\n }).headers.has('Content-Type');\n\n return duplexAccessed && !hasContentType;\n});\n\nconst DEFAULT_CHUNK_SIZE = 64 * 1024;\n\nconst supportsResponseStream = isReadableStreamSupported &&\n test(() => utils.isReadableStream(new Response('').body));\n\n\nconst resolvers = {\n stream: supportsResponseStream && ((res) => res.body)\n};\n\nisFetchSupported && (((res) => {\n ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => {\n !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() :\n (_, config) => {\n throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config);\n })\n });\n})(new Response));\n\nconst getBodyLength = async (body) => {\n if (body == null) {\n return 0;\n }\n\n if(utils.isBlob(body)) {\n return body.size;\n }\n\n if(utils.isSpecCompliantForm(body)) {\n const _request = new Request(platform.origin, {\n method: 'POST',\n body,\n });\n return (await _request.arrayBuffer()).byteLength;\n }\n\n if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) {\n return body.byteLength;\n }\n\n if(utils.isURLSearchParams(body)) {\n body = body + '';\n }\n\n if(utils.isString(body)) {\n return (await encodeText(body)).byteLength;\n }\n}\n\nconst resolveBodyLength = async (headers, body) => {\n const length = utils.toFiniteNumber(headers.getContentLength());\n\n return length == null ? getBodyLength(body) : length;\n}\n\nexport default isFetchSupported && (async (config) => {\n let {\n url,\n method,\n data,\n signal,\n cancelToken,\n timeout,\n onDownloadProgress,\n onUploadProgress,\n responseType,\n headers,\n withCredentials = 'same-origin',\n fetchOptions\n } = resolveConfig(config);\n\n responseType = responseType ? (responseType + '').toLowerCase() : 'text';\n\n let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout);\n\n let request;\n\n const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => {\n composedSignal.unsubscribe();\n });\n\n let requestContentLength;\n\n try {\n if (\n onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' &&\n (requestContentLength = await resolveBodyLength(headers, data)) !== 0\n ) {\n let _request = new Request(url, {\n method: 'POST',\n body: data,\n duplex: \"half\"\n });\n\n let contentTypeHeader;\n\n if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) {\n headers.setContentType(contentTypeHeader)\n }\n\n if (_request.body) {\n const [onProgress, flush] = progressEventDecorator(\n requestContentLength,\n progressEventReducer(asyncDecorator(onUploadProgress))\n );\n\n data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush);\n }\n }\n\n if (!utils.isString(withCredentials)) {\n withCredentials = withCredentials ? 'include' : 'omit';\n }\n\n // Cloudflare Workers throws when credentials are defined\n // see https://github.com/cloudflare/workerd/issues/902\n const isCredentialsSupported = \"credentials\" in Request.prototype;\n request = new Request(url, {\n ...fetchOptions,\n signal: composedSignal,\n method: method.toUpperCase(),\n headers: headers.normalize().toJSON(),\n body: data,\n duplex: \"half\",\n credentials: isCredentialsSupported ? withCredentials : undefined\n });\n\n let response = await fetch(request, fetchOptions);\n\n const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response');\n\n if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) {\n const options = {};\n\n ['status', 'statusText', 'headers'].forEach(prop => {\n options[prop] = response[prop];\n });\n\n const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length'));\n\n const [onProgress, flush] = onDownloadProgress && progressEventDecorator(\n responseContentLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true)\n ) || [];\n\n response = new Response(\n trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => {\n flush && flush();\n unsubscribe && unsubscribe();\n }),\n options\n );\n }\n\n responseType = responseType || 'text';\n\n let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config);\n\n !isStreamResponse && unsubscribe && unsubscribe();\n\n return await new Promise((resolve, reject) => {\n settle(resolve, reject, {\n data: responseData,\n headers: AxiosHeaders.from(response.headers),\n status: response.status,\n statusText: response.statusText,\n config,\n request\n })\n })\n } catch (err) {\n unsubscribe && unsubscribe();\n\n if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) {\n throw Object.assign(\n new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request),\n {\n cause: err.cause || err\n }\n )\n }\n\n throw AxiosError.from(err, err && err.code, config, request);\n }\n});\n\n\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport fetchAdapter from './fetch.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter,\n fetch: fetchAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","// eslint-disable-next-line strict\nexport default null;\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","export const VERSION = \"1.10.0\";","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\nvalidators.spelling = function spelling(correctSpelling) {\n return (value, opt) => {\n // eslint-disable-next-line no-console\n console.warn(`${opt} is likely a misspelling of ${correctSpelling}`);\n return true;\n }\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig || {};\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n async request(configOrUrl, config) {\n try {\n return await this._request(configOrUrl, config);\n } catch (err) {\n if (err instanceof Error) {\n let dummy = {};\n\n Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error());\n\n // slice off the Error: ... line\n const stack = dummy.stack ? dummy.stack.replace(/^.+\\n/, '') : '';\n try {\n if (!err.stack) {\n err.stack = stack;\n // match without the 2 top stack lines\n } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\\n.+\\n/, ''))) {\n err.stack += '\\n' + stack\n }\n } catch (e) {\n // ignore the case where \"stack\" is an un-writable property\n }\n }\n\n throw err;\n }\n }\n\n _request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.allowAbsoluteUrls\n if (config.allowAbsoluteUrls !== undefined) {\n // do nothing\n } else if (this.defaults.allowAbsoluteUrls !== undefined) {\n config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls;\n } else {\n config.allowAbsoluteUrls = true;\n }\n\n validator.assertOptions(config, {\n baseUrl: validators.spelling('baseURL'),\n withXsrfToken: validators.spelling('withXSRFToken')\n }, true);\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n toAbortSignal() {\n const controller = new AbortController();\n\n const abort = (err) => {\n controller.abort(err);\n };\n\n this.subscribe(abort);\n\n controller.signal.unsubscribe = () => this.unsubscribe(abort);\n\n return controller.signal;\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n ResetContent: 205,\n PartialContent: 206,\n MultiStatus: 207,\n AlreadyReported: 208,\n ImUsed: 226,\n MultipleChoices: 300,\n MovedPermanently: 301,\n Found: 302,\n SeeOther: 303,\n NotModified: 304,\n UseProxy: 305,\n Unused: 306,\n TemporaryRedirect: 307,\n PermanentRedirect: 308,\n BadRequest: 400,\n Unauthorized: 401,\n PaymentRequired: 402,\n Forbidden: 403,\n NotFound: 404,\n MethodNotAllowed: 405,\n NotAcceptable: 406,\n ProxyAuthenticationRequired: 407,\n RequestTimeout: 408,\n Conflict: 409,\n Gone: 410,\n LengthRequired: 411,\n PreconditionFailed: 412,\n PayloadTooLarge: 413,\n UriTooLong: 414,\n UnsupportedMediaType: 415,\n RangeNotSatisfiable: 416,\n ExpectationFailed: 417,\n ImATeapot: 418,\n MisdirectedRequest: 421,\n UnprocessableEntity: 422,\n Locked: 423,\n FailedDependency: 424,\n TooEarly: 425,\n UpgradeRequired: 426,\n PreconditionRequired: 428,\n TooManyRequests: 429,\n RequestHeaderFieldsTooLarge: 431,\n UnavailableForLegalReasons: 451,\n InternalServerError: 500,\n NotImplemented: 501,\n BadGateway: 502,\n ServiceUnavailable: 503,\n GatewayTimeout: 504,\n HttpVersionNotSupported: 505,\n VariantAlsoNegotiates: 506,\n InsufficientStorage: 507,\n LoopDetected: 508,\n NotExtended: 510,\n NetworkAuthenticationRequired: 511,\n};\n\nObject.entries(HttpStatusCode).forEach(([key, value]) => {\n HttpStatusCode[value] = key;\n});\n\nexport default HttpStatusCode;\n","'use strict';\n\nimport utils from './utils.js';\nimport bind from './helpers/bind.js';\nimport Axios from './core/Axios.js';\nimport mergeConfig from './core/mergeConfig.js';\nimport defaults from './defaults/index.js';\nimport formDataToJSON from './helpers/formDataToJSON.js';\nimport CanceledError from './cancel/CanceledError.js';\nimport CancelToken from './cancel/CancelToken.js';\nimport isCancel from './cancel/isCancel.js';\nimport {VERSION} from './env/data.js';\nimport toFormData from './helpers/toFormData.js';\nimport AxiosError from './core/AxiosError.js';\nimport spread from './helpers/spread.js';\nimport isAxiosError from './helpers/isAxiosError.js';\nimport AxiosHeaders from \"./core/AxiosHeaders.js\";\nimport adapters from './adapters/adapters.js';\nimport HttpStatusCode from './helpers/HttpStatusCode.js';\n\n/**\n * Create an instance of Axios\n *\n * @param {Object} defaultConfig The default config for the instance\n *\n * @returns {Axios} A new instance of Axios\n */\nfunction createInstance(defaultConfig) {\n const context = new Axios(defaultConfig);\n const instance = bind(Axios.prototype.request, context);\n\n // Copy axios.prototype to instance\n utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});\n\n // Copy context to instance\n utils.extend(instance, context, null, {allOwnKeys: true});\n\n // Factory for creating new instances\n instance.create = function create(instanceConfig) {\n return createInstance(mergeConfig(defaultConfig, instanceConfig));\n };\n\n return instance;\n}\n\n// Create the default instance to be exported\nconst axios = createInstance(defaults);\n\n// Expose Axios class to allow class inheritance\naxios.Axios = Axios;\n\n// Expose Cancel & CancelToken\naxios.CanceledError = CanceledError;\naxios.CancelToken = CancelToken;\naxios.isCancel = isCancel;\naxios.VERSION = VERSION;\naxios.toFormData = toFormData;\n\n// Expose AxiosError class\naxios.AxiosError = AxiosError;\n\n// alias for CanceledError for backward compatibility\naxios.Cancel = axios.CanceledError;\n\n// Expose all/spread\naxios.all = function all(promises) {\n return Promise.all(promises);\n};\n\naxios.spread = spread;\n\n// Expose isAxiosError\naxios.isAxiosError = isAxiosError;\n\n// Expose mergeConfig\naxios.mergeConfig = mergeConfig;\n\naxios.AxiosHeaders = AxiosHeaders;\n\naxios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);\n\naxios.getAdapter = adapters.getAdapter;\n\naxios.HttpStatusCode = HttpStatusCode;\n\naxios.default = axios;\n\n// this module should only have a default export\nexport default axios\n","'use strict';\n\n/**\n * Syntactic sugar for invoking a function and expanding an array for arguments.\n *\n * Common use case would be to use `Function.prototype.apply`.\n *\n * ```js\n * function f(x, y, z) {}\n * var args = [1, 2, 3];\n * f.apply(null, args);\n * ```\n *\n * With `spread` this example can be re-written.\n *\n * ```js\n * spread(function(x, y, z) {})([1, 2, 3]);\n * ```\n *\n * @param {Function} callback\n *\n * @returns {Function}\n */\nexport default function spread(callback) {\n return function wrap(arr) {\n return callback.apply(null, arr);\n };\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n/**\n * Determines whether the payload is an error thrown by Axios\n *\n * @param {*} payload The value to test\n *\n * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false\n */\nexport default function isAxiosError(payload) {\n return utils.isObject(payload) && (payload.isAxiosError === true);\n}\n","import axios from './lib/axios.js';\n\n// This module is intended to unwrap Axios default export as named.\n// Keep top-level export same with static properties\n// so that it can keep same with es module or cjs\nconst {\n Axios,\n AxiosError,\n CanceledError,\n isCancel,\n CancelToken,\n VERSION,\n all,\n Cancel,\n isAxiosError,\n spread,\n toFormData,\n AxiosHeaders,\n HttpStatusCode,\n formToJSON,\n getAdapter,\n mergeConfig\n} = axios;\n\nexport {\n axios as default,\n Axios,\n AxiosError,\n CanceledError,\n isCancel,\n CancelToken,\n VERSION,\n all,\n Cancel,\n isAxiosError,\n spread,\n toFormData,\n AxiosHeaders,\n HttpStatusCode,\n formToJSON,\n getAdapter,\n 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\ No newline at end of file diff --git a/node_modules/axios/dist/node/axios.cjs b/node_modules/axios/dist/node/axios.cjs new file mode 100644 index 0000000..eef1a45 --- /dev/null +++ b/node_modules/axios/dist/node/axios.cjs @@ -0,0 +1,4787 @@ +/*! Axios v1.10.0 Copyright (c) 2025 Matt Zabriskie and contributors */ +'use strict'; + +const FormData$1 = require('form-data'); +const crypto = require('crypto'); +const url = require('url'); +const proxyFromEnv = require('proxy-from-env'); +const http = require('http'); +const https = require('https'); +const util = require('util'); +const followRedirects = require('follow-redirects'); +const zlib = require('zlib'); +const stream = require('stream'); +const events = require('events'); + +function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; } + +const FormData__default = /*#__PURE__*/_interopDefaultLegacy(FormData$1); +const crypto__default = /*#__PURE__*/_interopDefaultLegacy(crypto); +const url__default = /*#__PURE__*/_interopDefaultLegacy(url); +const proxyFromEnv__default = /*#__PURE__*/_interopDefaultLegacy(proxyFromEnv); +const http__default = /*#__PURE__*/_interopDefaultLegacy(http); +const https__default = /*#__PURE__*/_interopDefaultLegacy(https); +const util__default = /*#__PURE__*/_interopDefaultLegacy(util); +const followRedirects__default = /*#__PURE__*/_interopDefaultLegacy(followRedirects); +const zlib__default = /*#__PURE__*/_interopDefaultLegacy(zlib); +const stream__default = /*#__PURE__*/_interopDefaultLegacy(stream); + +function bind(fn, thisArg) { + return function wrap() { + return fn.apply(thisArg, arguments); + }; +} + +// utils is a library of generic helper functions non-specific to axios + +const {toString} = Object.prototype; +const {getPrototypeOf} = Object; +const {iterator, toStringTag} = Symbol; + +const kindOf = (cache => thing => { + const str = toString.call(thing); + return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase()); +})(Object.create(null)); + +const kindOfTest = (type) => { + type = type.toLowerCase(); + return (thing) => kindOf(thing) === type +}; + +const typeOfTest = type => thing => typeof thing === type; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * + * @returns {boolean} True if value is an Array, otherwise false + */ +const {isArray} = Array; + +/** + * Determine if a value is undefined + * + * @param {*} val The value to test + * + * @returns {boolean} True if the value is undefined, otherwise false + */ +const isUndefined = typeOfTest('undefined'); + +/** + * Determine if a value is a Buffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Buffer, otherwise false + */ +function isBuffer(val) { + return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) + && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val); +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +const isArrayBuffer = kindOfTest('ArrayBuffer'); + + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + let result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (isArrayBuffer(val.buffer)); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a String, otherwise false + */ +const isString = typeOfTest('string'); + +/** + * Determine if a value is a Function + * + * @param {*} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +const isFunction = typeOfTest('function'); + +/** + * Determine if a value is a Number + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Number, otherwise false + */ +const isNumber = typeOfTest('number'); + +/** + * Determine if a value is an Object + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an Object, otherwise false + */ +const isObject = (thing) => thing !== null && typeof thing === 'object'; + +/** + * Determine if a value is a Boolean + * + * @param {*} thing The value to test + * @returns {boolean} True if value is a Boolean, otherwise false + */ +const isBoolean = thing => thing === true || thing === false; + +/** + * Determine if a value is a plain Object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a plain Object, otherwise false + */ +const isPlainObject = (val) => { + if (kindOf(val) !== 'object') { + return false; + } + + const prototype = getPrototypeOf(val); + return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val); +}; + +/** + * Determine if a value is a Date + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Date, otherwise false + */ +const isDate = kindOfTest('Date'); + +/** + * Determine if a value is a File + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFile = kindOfTest('File'); + +/** + * Determine if a value is a Blob + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Blob, otherwise false + */ +const isBlob = kindOfTest('Blob'); + +/** + * Determine if a value is a FileList + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFileList = kindOfTest('FileList'); + +/** + * Determine if a value is a Stream + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Stream, otherwise false + */ +const isStream = (val) => isObject(val) && isFunction(val.pipe); + +/** + * Determine if a value is a FormData + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an FormData, otherwise false + */ +const isFormData = (thing) => { + let kind; + return thing && ( + (typeof FormData === 'function' && thing instanceof FormData) || ( + isFunction(thing.append) && ( + (kind = kindOf(thing)) === 'formdata' || + // detect form-data instance + (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]') + ) + ) + ) +}; + +/** + * Determine if a value is a URLSearchParams object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +const isURLSearchParams = kindOfTest('URLSearchParams'); + +const [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest); + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * + * @returns {String} The String freed of excess whitespace + */ +const trim = (str) => str.trim ? + str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, ''); + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + * + * @param {Boolean} [allOwnKeys = false] + * @returns {any} + */ +function forEach(obj, fn, {allOwnKeys = false} = {}) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + let i; + let l; + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj); + const len = keys.length; + let key; + + for (i = 0; i < len; i++) { + key = keys[i]; + fn.call(null, obj[key], key, obj); + } + } +} + +function findKey(obj, key) { + key = key.toLowerCase(); + const keys = Object.keys(obj); + let i = keys.length; + let _key; + while (i-- > 0) { + _key = keys[i]; + if (key === _key.toLowerCase()) { + return _key; + } + } + return null; +} + +const _global = (() => { + /*eslint no-undef:0*/ + if (typeof globalThis !== "undefined") return globalThis; + return typeof self !== "undefined" ? self : (typeof window !== 'undefined' ? window : global) +})(); + +const isContextDefined = (context) => !isUndefined(context) && context !== _global; + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + const {caseless} = isContextDefined(this) && this || {}; + const result = {}; + const assignValue = (val, key) => { + const targetKey = caseless && findKey(result, key) || key; + if (isPlainObject(result[targetKey]) && isPlainObject(val)) { + result[targetKey] = merge(result[targetKey], val); + } else if (isPlainObject(val)) { + result[targetKey] = merge({}, val); + } else if (isArray(val)) { + result[targetKey] = val.slice(); + } else { + result[targetKey] = val; + } + }; + + for (let i = 0, l = arguments.length; i < l; i++) { + arguments[i] && forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * + * @param {Boolean} [allOwnKeys] + * @returns {Object} The resulting value of object a + */ +const extend = (a, b, thisArg, {allOwnKeys}= {}) => { + forEach(b, (val, key) => { + if (thisArg && isFunction(val)) { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }, {allOwnKeys}); + return a; +}; + +/** + * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) + * + * @param {string} content with BOM + * + * @returns {string} content value without BOM + */ +const stripBOM = (content) => { + if (content.charCodeAt(0) === 0xFEFF) { + content = content.slice(1); + } + return content; +}; + +/** + * Inherit the prototype methods from one constructor into another + * @param {function} constructor + * @param {function} superConstructor + * @param {object} [props] + * @param {object} [descriptors] + * + * @returns {void} + */ +const inherits = (constructor, superConstructor, props, descriptors) => { + constructor.prototype = Object.create(superConstructor.prototype, descriptors); + constructor.prototype.constructor = constructor; + Object.defineProperty(constructor, 'super', { + value: superConstructor.prototype + }); + props && Object.assign(constructor.prototype, props); +}; + +/** + * Resolve object with deep prototype chain to a flat object + * @param {Object} sourceObj source object + * @param {Object} [destObj] + * @param {Function|Boolean} [filter] + * @param {Function} [propFilter] + * + * @returns {Object} + */ +const toFlatObject = (sourceObj, destObj, filter, propFilter) => { + let props; + let i; + let prop; + const merged = {}; + + destObj = destObj || {}; + // eslint-disable-next-line no-eq-null,eqeqeq + if (sourceObj == null) return destObj; + + do { + props = Object.getOwnPropertyNames(sourceObj); + i = props.length; + while (i-- > 0) { + prop = props[i]; + if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) { + destObj[prop] = sourceObj[prop]; + merged[prop] = true; + } + } + sourceObj = filter !== false && getPrototypeOf(sourceObj); + } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype); + + return destObj; +}; + +/** + * Determines whether a string ends with the characters of a specified string + * + * @param {String} str + * @param {String} searchString + * @param {Number} [position= 0] + * + * @returns {boolean} + */ +const endsWith = (str, searchString, position) => { + str = String(str); + if (position === undefined || position > str.length) { + position = str.length; + } + position -= searchString.length; + const lastIndex = str.indexOf(searchString, position); + return lastIndex !== -1 && lastIndex === position; +}; + + +/** + * Returns new array from array like object or null if failed + * + * @param {*} [thing] + * + * @returns {?Array} + */ +const toArray = (thing) => { + if (!thing) return null; + if (isArray(thing)) return thing; + let i = thing.length; + if (!isNumber(i)) return null; + const arr = new Array(i); + while (i-- > 0) { + arr[i] = thing[i]; + } + return arr; +}; + +/** + * Checking if the Uint8Array exists and if it does, it returns a function that checks if the + * thing passed in is an instance of Uint8Array + * + * @param {TypedArray} + * + * @returns {Array} + */ +// eslint-disable-next-line func-names +const isTypedArray = (TypedArray => { + // eslint-disable-next-line func-names + return thing => { + return TypedArray && thing instanceof TypedArray; + }; +})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array)); + +/** + * For each entry in the object, call the function with the key and value. + * + * @param {Object} obj - The object to iterate over. + * @param {Function} fn - The function to call for each entry. + * + * @returns {void} + */ +const forEachEntry = (obj, fn) => { + const generator = obj && obj[iterator]; + + const _iterator = generator.call(obj); + + let result; + + while ((result = _iterator.next()) && !result.done) { + const pair = result.value; + fn.call(obj, pair[0], pair[1]); + } +}; + +/** + * It takes a regular expression and a string, and returns an array of all the matches + * + * @param {string} regExp - The regular expression to match against. + * @param {string} str - The string to search. + * + * @returns {Array} + */ +const matchAll = (regExp, str) => { + let matches; + const arr = []; + + while ((matches = regExp.exec(str)) !== null) { + arr.push(matches); + } + + return arr; +}; + +/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */ +const isHTMLForm = kindOfTest('HTMLFormElement'); + +const toCamelCase = str => { + return str.toLowerCase().replace(/[-_\s]([a-z\d])(\w*)/g, + function replacer(m, p1, p2) { + return p1.toUpperCase() + p2; + } + ); +}; + +/* Creating a function that will check if an object has a property. */ +const hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype); + +/** + * Determine if a value is a RegExp object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a RegExp object, otherwise false + */ +const isRegExp = kindOfTest('RegExp'); + +const reduceDescriptors = (obj, reducer) => { + const descriptors = Object.getOwnPropertyDescriptors(obj); + const reducedDescriptors = {}; + + forEach(descriptors, (descriptor, name) => { + let ret; + if ((ret = reducer(descriptor, name, obj)) !== false) { + reducedDescriptors[name] = ret || descriptor; + } + }); + + Object.defineProperties(obj, reducedDescriptors); +}; + +/** + * Makes all methods read-only + * @param {Object} obj + */ + +const freezeMethods = (obj) => { + reduceDescriptors(obj, (descriptor, name) => { + // skip restricted props in strict mode + if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) { + return false; + } + + const value = obj[name]; + + if (!isFunction(value)) return; + + descriptor.enumerable = false; + + if ('writable' in descriptor) { + descriptor.writable = false; + return; + } + + if (!descriptor.set) { + descriptor.set = () => { + throw Error('Can not rewrite read-only method \'' + name + '\''); + }; + } + }); +}; + +const toObjectSet = (arrayOrString, delimiter) => { + const obj = {}; + + const define = (arr) => { + arr.forEach(value => { + obj[value] = true; + }); + }; + + isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter)); + + return obj; +}; + +const noop = () => {}; + +const toFiniteNumber = (value, defaultValue) => { + return value != null && Number.isFinite(value = +value) ? value : defaultValue; +}; + +/** + * If the thing is a FormData object, return true, otherwise return false. + * + * @param {unknown} thing - The thing to check. + * + * @returns {boolean} + */ +function isSpecCompliantForm(thing) { + return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]); +} + +const toJSONObject = (obj) => { + const stack = new Array(10); + + const visit = (source, i) => { + + if (isObject(source)) { + if (stack.indexOf(source) >= 0) { + return; + } + + if(!('toJSON' in source)) { + stack[i] = source; + const target = isArray(source) ? [] : {}; + + forEach(source, (value, key) => { + const reducedValue = visit(value, i + 1); + !isUndefined(reducedValue) && (target[key] = reducedValue); + }); + + stack[i] = undefined; + + return target; + } + } + + return source; + }; + + return visit(obj, 0); +}; + +const isAsyncFn = kindOfTest('AsyncFunction'); + +const isThenable = (thing) => + thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch); + +// original code +// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34 + +const _setImmediate = ((setImmediateSupported, postMessageSupported) => { + if (setImmediateSupported) { + return setImmediate; + } + + return postMessageSupported ? ((token, callbacks) => { + _global.addEventListener("message", ({source, data}) => { + if (source === _global && data === token) { + callbacks.length && callbacks.shift()(); + } + }, false); + + return (cb) => { + callbacks.push(cb); + _global.postMessage(token, "*"); + } + })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb); +})( + typeof setImmediate === 'function', + isFunction(_global.postMessage) +); + +const asap = typeof queueMicrotask !== 'undefined' ? + queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate); + +// ********************* + + +const isIterable = (thing) => thing != null && isFunction(thing[iterator]); + + +const utils$1 = { + isArray, + isArrayBuffer, + isBuffer, + isFormData, + isArrayBufferView, + isString, + isNumber, + isBoolean, + isObject, + isPlainObject, + isReadableStream, + isRequest, + isResponse, + isHeaders, + isUndefined, + isDate, + isFile, + isBlob, + isRegExp, + isFunction, + isStream, + isURLSearchParams, + isTypedArray, + isFileList, + forEach, + merge, + extend, + trim, + stripBOM, + inherits, + toFlatObject, + kindOf, + kindOfTest, + endsWith, + toArray, + forEachEntry, + matchAll, + isHTMLForm, + hasOwnProperty, + hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection + reduceDescriptors, + freezeMethods, + toObjectSet, + toCamelCase, + noop, + toFiniteNumber, + findKey, + global: _global, + isContextDefined, + isSpecCompliantForm, + toJSONObject, + isAsyncFn, + isThenable, + setImmediate: _setImmediate, + asap, + isIterable +}; + +/** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [config] The config. + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * + * @returns {Error} The created error. + */ +function AxiosError(message, code, config, request, response) { + Error.call(this); + + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } else { + this.stack = (new Error()).stack; + } + + this.message = message; + this.name = 'AxiosError'; + code && (this.code = code); + config && (this.config = config); + request && (this.request = request); + if (response) { + this.response = response; + this.status = response.status ? response.status : null; + } +} + +utils$1.inherits(AxiosError, Error, { + toJSON: function toJSON() { + return { + // Standard + message: this.message, + name: this.name, + // Microsoft + description: this.description, + number: this.number, + // Mozilla + fileName: this.fileName, + lineNumber: this.lineNumber, + columnNumber: this.columnNumber, + stack: this.stack, + // Axios + config: utils$1.toJSONObject(this.config), + code: this.code, + status: this.status + }; + } +}); + +const prototype$1 = AxiosError.prototype; +const descriptors = {}; + +[ + 'ERR_BAD_OPTION_VALUE', + 'ERR_BAD_OPTION', + 'ECONNABORTED', + 'ETIMEDOUT', + 'ERR_NETWORK', + 'ERR_FR_TOO_MANY_REDIRECTS', + 'ERR_DEPRECATED', + 'ERR_BAD_RESPONSE', + 'ERR_BAD_REQUEST', + 'ERR_CANCELED', + 'ERR_NOT_SUPPORT', + 'ERR_INVALID_URL' +// eslint-disable-next-line func-names +].forEach(code => { + descriptors[code] = {value: code}; +}); + +Object.defineProperties(AxiosError, descriptors); +Object.defineProperty(prototype$1, 'isAxiosError', {value: true}); + +// eslint-disable-next-line func-names +AxiosError.from = (error, code, config, request, response, customProps) => { + const axiosError = Object.create(prototype$1); + + utils$1.toFlatObject(error, axiosError, function filter(obj) { + return obj !== Error.prototype; + }, prop => { + return prop !== 'isAxiosError'; + }); + + AxiosError.call(axiosError, error.message, code, config, request, response); + + axiosError.cause = error; + + axiosError.name = error.name; + + customProps && Object.assign(axiosError, customProps); + + return axiosError; +}; + +/** + * Determines if the given thing is a array or js object. + * + * @param {string} thing - The object or array to be visited. + * + * @returns {boolean} + */ +function isVisitable(thing) { + return utils$1.isPlainObject(thing) || utils$1.isArray(thing); +} + +/** + * It removes the brackets from the end of a string + * + * @param {string} key - The key of the parameter. + * + * @returns {string} the key without the brackets. + */ +function removeBrackets(key) { + return utils$1.endsWith(key, '[]') ? key.slice(0, -2) : key; +} + +/** + * It takes a path, a key, and a boolean, and returns a string + * + * @param {string} path - The path to the current key. + * @param {string} key - The key of the current object being iterated over. + * @param {string} dots - If true, the key will be rendered with dots instead of brackets. + * + * @returns {string} The path to the current key. + */ +function renderKey(path, key, dots) { + if (!path) return key; + return path.concat(key).map(function each(token, i) { + // eslint-disable-next-line no-param-reassign + token = removeBrackets(token); + return !dots && i ? '[' + token + ']' : token; + }).join(dots ? '.' : ''); +} + +/** + * If the array is an array and none of its elements are visitable, then it's a flat array. + * + * @param {Array} arr - The array to check + * + * @returns {boolean} + */ +function isFlatArray(arr) { + return utils$1.isArray(arr) && !arr.some(isVisitable); +} + +const predicates = utils$1.toFlatObject(utils$1, {}, null, function filter(prop) { + return /^is[A-Z]/.test(prop); +}); + +/** + * Convert a data object to FormData + * + * @param {Object} obj + * @param {?Object} [formData] + * @param {?Object} [options] + * @param {Function} [options.visitor] + * @param {Boolean} [options.metaTokens = true] + * @param {Boolean} [options.dots = false] + * @param {?Boolean} [options.indexes = false] + * + * @returns {Object} + **/ + +/** + * It converts an object into a FormData object + * + * @param {Object} obj - The object to convert to form data. + * @param {string} formData - The FormData object to append to. + * @param {Object} options + * + * @returns + */ +function toFormData(obj, formData, options) { + if (!utils$1.isObject(obj)) { + throw new TypeError('target must be an object'); + } + + // eslint-disable-next-line no-param-reassign + formData = formData || new (FormData__default["default"] || FormData)(); + + // eslint-disable-next-line no-param-reassign + options = utils$1.toFlatObject(options, { + metaTokens: true, + dots: false, + indexes: false + }, false, function defined(option, source) { + // eslint-disable-next-line no-eq-null,eqeqeq + return !utils$1.isUndefined(source[option]); + }); + + const metaTokens = options.metaTokens; + // eslint-disable-next-line no-use-before-define + const visitor = options.visitor || defaultVisitor; + const dots = options.dots; + const indexes = options.indexes; + const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob; + const useBlob = _Blob && utils$1.isSpecCompliantForm(formData); + + if (!utils$1.isFunction(visitor)) { + throw new TypeError('visitor must be a function'); + } + + function convertValue(value) { + if (value === null) return ''; + + if (utils$1.isDate(value)) { + return value.toISOString(); + } + + if (utils$1.isBoolean(value)) { + return value.toString(); + } + + if (!useBlob && utils$1.isBlob(value)) { + throw new AxiosError('Blob is not supported. Use a Buffer instead.'); + } + + if (utils$1.isArrayBuffer(value) || utils$1.isTypedArray(value)) { + return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value); + } + + return value; + } + + /** + * Default visitor. + * + * @param {*} value + * @param {String|Number} key + * @param {Array} path + * @this {FormData} + * + * @returns {boolean} return true to visit the each prop of the value recursively + */ + function defaultVisitor(value, key, path) { + let arr = value; + + if (value && !path && typeof value === 'object') { + if (utils$1.endsWith(key, '{}')) { + // eslint-disable-next-line no-param-reassign + key = metaTokens ? key : key.slice(0, -2); + // eslint-disable-next-line no-param-reassign + value = JSON.stringify(value); + } else if ( + (utils$1.isArray(value) && isFlatArray(value)) || + ((utils$1.isFileList(value) || utils$1.endsWith(key, '[]')) && (arr = utils$1.toArray(value)) + )) { + // eslint-disable-next-line no-param-reassign + key = removeBrackets(key); + + arr.forEach(function each(el, index) { + !(utils$1.isUndefined(el) || el === null) && formData.append( + // eslint-disable-next-line no-nested-ternary + indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'), + convertValue(el) + ); + }); + return false; + } + } + + if (isVisitable(value)) { + return true; + } + + formData.append(renderKey(path, key, dots), convertValue(value)); + + return false; + } + + const stack = []; + + const exposedHelpers = Object.assign(predicates, { + defaultVisitor, + convertValue, + isVisitable + }); + + function build(value, path) { + if (utils$1.isUndefined(value)) return; + + if (stack.indexOf(value) !== -1) { + throw Error('Circular reference detected in ' + path.join('.')); + } + + stack.push(value); + + utils$1.forEach(value, function each(el, key) { + const result = !(utils$1.isUndefined(el) || el === null) && visitor.call( + formData, el, utils$1.isString(key) ? key.trim() : key, path, exposedHelpers + ); + + if (result === true) { + build(el, path ? path.concat(key) : [key]); + } + }); + + stack.pop(); + } + + if (!utils$1.isObject(obj)) { + throw new TypeError('data must be an object'); + } + + build(obj); + + return formData; +} + +/** + * It encodes a string by replacing all characters that are not in the unreserved set with + * their percent-encoded equivalents + * + * @param {string} str - The string to encode. + * + * @returns {string} The encoded string. + */ +function encode$1(str) { + const charMap = { + '!': '%21', + "'": '%27', + '(': '%28', + ')': '%29', + '~': '%7E', + '%20': '+', + '%00': '\x00' + }; + return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) { + return charMap[match]; + }); +} + +/** + * It takes a params object and converts it to a FormData object + * + * @param {Object} params - The parameters to be converted to a FormData object. + * @param {Object} options - The options object passed to the Axios constructor. + * + * @returns {void} + */ +function AxiosURLSearchParams(params, options) { + this._pairs = []; + + params && toFormData(params, this, options); +} + +const prototype = AxiosURLSearchParams.prototype; + +prototype.append = function append(name, value) { + this._pairs.push([name, value]); +}; + +prototype.toString = function toString(encoder) { + const _encode = encoder ? function(value) { + return encoder.call(this, value, encode$1); + } : encode$1; + + return this._pairs.map(function each(pair) { + return _encode(pair[0]) + '=' + _encode(pair[1]); + }, '').join('&'); +}; + +/** + * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their + * URI encoded counterparts + * + * @param {string} val The value to be encoded. + * + * @returns {string} The encoded value. + */ +function encode(val) { + return encodeURIComponent(val). + replace(/%3A/gi, ':'). + replace(/%24/g, '$'). + replace(/%2C/gi, ','). + replace(/%20/g, '+'). + replace(/%5B/gi, '['). + replace(/%5D/gi, ']'); +} + +/** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @param {?(object|Function)} options + * + * @returns {string} The formatted url + */ +function buildURL(url, params, options) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + + const _encode = options && options.encode || encode; + + if (utils$1.isFunction(options)) { + options = { + serialize: options + }; + } + + const serializeFn = options && options.serialize; + + let serializedParams; + + if (serializeFn) { + serializedParams = serializeFn(params, options); + } else { + serializedParams = utils$1.isURLSearchParams(params) ? + params.toString() : + new AxiosURLSearchParams(params, options).toString(_encode); + } + + if (serializedParams) { + const hashmarkIndex = url.indexOf("#"); + + if (hashmarkIndex !== -1) { + url = url.slice(0, hashmarkIndex); + } + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + + return url; +} + +class InterceptorManager { + constructor() { + this.handlers = []; + } + + /** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ + use(fulfilled, rejected, options) { + this.handlers.push({ + fulfilled, + rejected, + synchronous: options ? options.synchronous : false, + runWhen: options ? options.runWhen : null + }); + return this.handlers.length - 1; + } + + /** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + * + * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise + */ + eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } + } + + /** + * Clear all interceptors from the stack + * + * @returns {void} + */ + clear() { + if (this.handlers) { + this.handlers = []; + } + } + + /** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + * + * @returns {void} + */ + forEach(fn) { + utils$1.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); + } +} + +const InterceptorManager$1 = InterceptorManager; + +const transitionalDefaults = { + silentJSONParsing: true, + forcedJSONParsing: true, + clarifyTimeoutError: false +}; + +const URLSearchParams = url__default["default"].URLSearchParams; + +const ALPHA = 'abcdefghijklmnopqrstuvwxyz'; + +const DIGIT = '0123456789'; + +const ALPHABET = { + DIGIT, + ALPHA, + ALPHA_DIGIT: ALPHA + ALPHA.toUpperCase() + DIGIT +}; + +const generateString = (size = 16, alphabet = ALPHABET.ALPHA_DIGIT) => { + let str = ''; + const {length} = alphabet; + const randomValues = new Uint32Array(size); + crypto__default["default"].randomFillSync(randomValues); + for (let i = 0; i < size; i++) { + str += alphabet[randomValues[i] % length]; + } + + return str; +}; + + +const platform$1 = { + isNode: true, + classes: { + URLSearchParams, + FormData: FormData__default["default"], + Blob: typeof Blob !== 'undefined' && Blob || null + }, + ALPHABET, + generateString, + protocols: [ 'http', 'https', 'file', 'data' ] +}; + +const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined'; + +const _navigator = typeof navigator === 'object' && navigator || undefined; + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + * + * @returns {boolean} + */ +const hasStandardBrowserEnv = hasBrowserEnv && + (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0); + +/** + * Determine if we're running in a standard browser webWorker environment + * + * Although the `isStandardBrowserEnv` method indicates that + * `allows axios to run in a web worker`, the WebWorker will still be + * filtered out due to its judgment standard + * `typeof window !== 'undefined' && typeof document !== 'undefined'`. + * This leads to a problem when axios post `FormData` in webWorker + */ +const hasStandardBrowserWebWorkerEnv = (() => { + return ( + typeof WorkerGlobalScope !== 'undefined' && + // eslint-disable-next-line no-undef + self instanceof WorkerGlobalScope && + typeof self.importScripts === 'function' + ); +})(); + +const origin = hasBrowserEnv && window.location.href || 'http://localhost'; + +const utils = /*#__PURE__*/Object.freeze({ + __proto__: null, + hasBrowserEnv: hasBrowserEnv, + hasStandardBrowserWebWorkerEnv: hasStandardBrowserWebWorkerEnv, + hasStandardBrowserEnv: hasStandardBrowserEnv, + navigator: _navigator, + origin: origin +}); + +const platform = { + ...utils, + ...platform$1 +}; + +function toURLEncodedForm(data, options) { + return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({ + visitor: function(value, key, path, helpers) { + if (platform.isNode && utils$1.isBuffer(value)) { + this.append(key, value.toString('base64')); + return false; + } + + return helpers.defaultVisitor.apply(this, arguments); + } + }, options)); +} + +/** + * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z'] + * + * @param {string} name - The name of the property to get. + * + * @returns An array of strings. + */ +function parsePropPath(name) { + // foo[x][y][z] + // foo.x.y.z + // foo-x-y-z + // foo x y z + return utils$1.matchAll(/\w+|\[(\w*)]/g, name).map(match => { + return match[0] === '[]' ? '' : match[1] || match[0]; + }); +} + +/** + * Convert an array to an object. + * + * @param {Array} arr - The array to convert to an object. + * + * @returns An object with the same keys and values as the array. + */ +function arrayToObject(arr) { + const obj = {}; + const keys = Object.keys(arr); + let i; + const len = keys.length; + let key; + for (i = 0; i < len; i++) { + key = keys[i]; + obj[key] = arr[key]; + } + return obj; +} + +/** + * It takes a FormData object and returns a JavaScript object + * + * @param {string} formData The FormData object to convert to JSON. + * + * @returns {Object | null} The converted object. + */ +function formDataToJSON(formData) { + function buildPath(path, value, target, index) { + let name = path[index++]; + + if (name === '__proto__') return true; + + const isNumericKey = Number.isFinite(+name); + const isLast = index >= path.length; + name = !name && utils$1.isArray(target) ? target.length : name; + + if (isLast) { + if (utils$1.hasOwnProp(target, name)) { + target[name] = [target[name], value]; + } else { + target[name] = value; + } + + return !isNumericKey; + } + + if (!target[name] || !utils$1.isObject(target[name])) { + target[name] = []; + } + + const result = buildPath(path, value, target[name], index); + + if (result && utils$1.isArray(target[name])) { + target[name] = arrayToObject(target[name]); + } + + return !isNumericKey; + } + + if (utils$1.isFormData(formData) && utils$1.isFunction(formData.entries)) { + const obj = {}; + + utils$1.forEachEntry(formData, (name, value) => { + buildPath(parsePropPath(name), value, obj, 0); + }); + + return obj; + } + + return null; +} + +/** + * It takes a string, tries to parse it, and if it fails, it returns the stringified version + * of the input + * + * @param {any} rawValue - The value to be stringified. + * @param {Function} parser - A function that parses a string into a JavaScript object. + * @param {Function} encoder - A function that takes a value and returns a string. + * + * @returns {string} A stringified version of the rawValue. + */ +function stringifySafely(rawValue, parser, encoder) { + if (utils$1.isString(rawValue)) { + try { + (parser || JSON.parse)(rawValue); + return utils$1.trim(rawValue); + } catch (e) { + if (e.name !== 'SyntaxError') { + throw e; + } + } + } + + return (encoder || JSON.stringify)(rawValue); +} + +const defaults = { + + transitional: transitionalDefaults, + + adapter: ['xhr', 'http', 'fetch'], + + transformRequest: [function transformRequest(data, headers) { + const contentType = headers.getContentType() || ''; + const hasJSONContentType = contentType.indexOf('application/json') > -1; + const isObjectPayload = utils$1.isObject(data); + + if (isObjectPayload && utils$1.isHTMLForm(data)) { + data = new FormData(data); + } + + const isFormData = utils$1.isFormData(data); + + if (isFormData) { + return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data; + } + + if (utils$1.isArrayBuffer(data) || + utils$1.isBuffer(data) || + utils$1.isStream(data) || + utils$1.isFile(data) || + utils$1.isBlob(data) || + utils$1.isReadableStream(data) + ) { + return data; + } + if (utils$1.isArrayBufferView(data)) { + return data.buffer; + } + if (utils$1.isURLSearchParams(data)) { + headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false); + return data.toString(); + } + + let isFileList; + + if (isObjectPayload) { + if (contentType.indexOf('application/x-www-form-urlencoded') > -1) { + return toURLEncodedForm(data, this.formSerializer).toString(); + } + + if ((isFileList = utils$1.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) { + const _FormData = this.env && this.env.FormData; + + return toFormData( + isFileList ? {'files[]': data} : data, + _FormData && new _FormData(), + this.formSerializer + ); + } + } + + if (isObjectPayload || hasJSONContentType ) { + headers.setContentType('application/json', false); + return stringifySafely(data); + } + + return data; + }], + + transformResponse: [function transformResponse(data) { + const transitional = this.transitional || defaults.transitional; + const forcedJSONParsing = transitional && transitional.forcedJSONParsing; + const JSONRequested = this.responseType === 'json'; + + if (utils$1.isResponse(data) || utils$1.isReadableStream(data)) { + return data; + } + + if (data && utils$1.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) { + const silentJSONParsing = transitional && transitional.silentJSONParsing; + const strictJSONParsing = !silentJSONParsing && JSONRequested; + + try { + return JSON.parse(data); + } catch (e) { + if (strictJSONParsing) { + if (e.name === 'SyntaxError') { + throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response); + } + throw e; + } + } + } + + return data; + }], + + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + + maxContentLength: -1, + maxBodyLength: -1, + + env: { + FormData: platform.classes.FormData, + Blob: platform.classes.Blob + }, + + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + }, + + headers: { + common: { + 'Accept': 'application/json, text/plain, */*', + 'Content-Type': undefined + } + } +}; + +utils$1.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => { + defaults.headers[method] = {}; +}); + +const defaults$1 = defaults; + +// RawAxiosHeaders whose duplicates are ignored by node +// c.f. https://nodejs.org/api/http.html#http_message_headers +const ignoreDuplicateOf = utils$1.toObjectSet([ + 'age', 'authorization', 'content-length', 'content-type', 'etag', + 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', + 'last-modified', 'location', 'max-forwards', 'proxy-authorization', + 'referer', 'retry-after', 'user-agent' +]); + +/** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} rawHeaders Headers needing to be parsed + * + * @returns {Object} Headers parsed into an object + */ +const parseHeaders = rawHeaders => { + const parsed = {}; + let key; + let val; + let i; + + rawHeaders && rawHeaders.split('\n').forEach(function parser(line) { + i = line.indexOf(':'); + key = line.substring(0, i).trim().toLowerCase(); + val = line.substring(i + 1).trim(); + + if (!key || (parsed[key] && ignoreDuplicateOf[key])) { + return; + } + + if (key === 'set-cookie') { + if (parsed[key]) { + parsed[key].push(val); + } else { + parsed[key] = [val]; + } + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + }); + + return parsed; +}; + +const $internals = Symbol('internals'); + +function normalizeHeader(header) { + return header && String(header).trim().toLowerCase(); +} + +function normalizeValue(value) { + if (value === false || value == null) { + return value; + } + + return utils$1.isArray(value) ? value.map(normalizeValue) : String(value); +} + +function parseTokens(str) { + const tokens = Object.create(null); + const tokensRE = /([^\s,;=]+)\s*(?:=\s*([^,;]+))?/g; + let match; + + while ((match = tokensRE.exec(str))) { + tokens[match[1]] = match[2]; + } + + return tokens; +} + +const isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim()); + +function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) { + if (utils$1.isFunction(filter)) { + return filter.call(this, value, header); + } + + if (isHeaderNameFilter) { + value = header; + } + + if (!utils$1.isString(value)) return; + + if (utils$1.isString(filter)) { + return value.indexOf(filter) !== -1; + } + + if (utils$1.isRegExp(filter)) { + return filter.test(value); + } +} + +function formatHeader(header) { + return header.trim() + .toLowerCase().replace(/([a-z\d])(\w*)/g, (w, char, str) => { + return char.toUpperCase() + str; + }); +} + +function buildAccessors(obj, header) { + const accessorName = utils$1.toCamelCase(' ' + header); + + ['get', 'set', 'has'].forEach(methodName => { + Object.defineProperty(obj, methodName + accessorName, { + value: function(arg1, arg2, arg3) { + return this[methodName].call(this, header, arg1, arg2, arg3); + }, + configurable: true + }); + }); +} + +class AxiosHeaders { + constructor(headers) { + headers && this.set(headers); + } + + set(header, valueOrRewrite, rewrite) { + const self = this; + + function setHeader(_value, _header, _rewrite) { + const lHeader = normalizeHeader(_header); + + if (!lHeader) { + throw new Error('header name must be a non-empty string'); + } + + const key = utils$1.findKey(self, lHeader); + + if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) { + self[key || _header] = normalizeValue(_value); + } + } + + const setHeaders = (headers, _rewrite) => + utils$1.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite)); + + if (utils$1.isPlainObject(header) || header instanceof this.constructor) { + setHeaders(header, valueOrRewrite); + } else if(utils$1.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) { + setHeaders(parseHeaders(header), valueOrRewrite); + } else if (utils$1.isObject(header) && utils$1.isIterable(header)) { + let obj = {}, dest, key; + for (const entry of header) { + if (!utils$1.isArray(entry)) { + throw TypeError('Object iterator must return a key-value pair'); + } + + obj[key = entry[0]] = (dest = obj[key]) ? + (utils$1.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1]; + } + + setHeaders(obj, valueOrRewrite); + } else { + header != null && setHeader(valueOrRewrite, header, rewrite); + } + + return this; + } + + get(header, parser) { + header = normalizeHeader(header); + + if (header) { + const key = utils$1.findKey(this, header); + + if (key) { + const value = this[key]; + + if (!parser) { + return value; + } + + if (parser === true) { + return parseTokens(value); + } + + if (utils$1.isFunction(parser)) { + return parser.call(this, value, key); + } + + if (utils$1.isRegExp(parser)) { + return parser.exec(value); + } + + throw new TypeError('parser must be boolean|regexp|function'); + } + } + } + + has(header, matcher) { + header = normalizeHeader(header); + + if (header) { + const key = utils$1.findKey(this, header); + + return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher))); + } + + return false; + } + + delete(header, matcher) { + const self = this; + let deleted = false; + + function deleteHeader(_header) { + _header = normalizeHeader(_header); + + if (_header) { + const key = utils$1.findKey(self, _header); + + if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) { + delete self[key]; + + deleted = true; + } + } + } + + if (utils$1.isArray(header)) { + header.forEach(deleteHeader); + } else { + deleteHeader(header); + } + + return deleted; + } + + clear(matcher) { + const keys = Object.keys(this); + let i = keys.length; + let deleted = false; + + while (i--) { + const key = keys[i]; + if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) { + delete this[key]; + deleted = true; + } + } + + return deleted; + } + + normalize(format) { + const self = this; + const headers = {}; + + utils$1.forEach(this, (value, header) => { + const key = utils$1.findKey(headers, header); + + if (key) { + self[key] = normalizeValue(value); + delete self[header]; + return; + } + + const normalized = format ? formatHeader(header) : String(header).trim(); + + if (normalized !== header) { + delete self[header]; + } + + self[normalized] = normalizeValue(value); + + headers[normalized] = true; + }); + + return this; + } + + concat(...targets) { + return this.constructor.concat(this, ...targets); + } + + toJSON(asStrings) { + const obj = Object.create(null); + + utils$1.forEach(this, (value, header) => { + value != null && value !== false && (obj[header] = asStrings && utils$1.isArray(value) ? value.join(', ') : value); + }); + + return obj; + } + + [Symbol.iterator]() { + return Object.entries(this.toJSON())[Symbol.iterator](); + } + + toString() { + return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\n'); + } + + getSetCookie() { + return this.get("set-cookie") || []; + } + + get [Symbol.toStringTag]() { + return 'AxiosHeaders'; + } + + static from(thing) { + return thing instanceof this ? thing : new this(thing); + } + + static concat(first, ...targets) { + const computed = new this(first); + + targets.forEach((target) => computed.set(target)); + + return computed; + } + + static accessor(header) { + const internals = this[$internals] = (this[$internals] = { + accessors: {} + }); + + const accessors = internals.accessors; + const prototype = this.prototype; + + function defineAccessor(_header) { + const lHeader = normalizeHeader(_header); + + if (!accessors[lHeader]) { + buildAccessors(prototype, _header); + accessors[lHeader] = true; + } + } + + utils$1.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header); + + return this; + } +} + +AxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']); + +// reserved names hotfix +utils$1.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => { + let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set` + return { + get: () => value, + set(headerValue) { + this[mapped] = headerValue; + } + } +}); + +utils$1.freezeMethods(AxiosHeaders); + +const AxiosHeaders$1 = AxiosHeaders; + +/** + * Transform the data for a request or a response + * + * @param {Array|Function} fns A single function or Array of functions + * @param {?Object} response The response object + * + * @returns {*} The resulting transformed data + */ +function transformData(fns, response) { + const config = this || defaults$1; + const context = response || config; + const headers = AxiosHeaders$1.from(context.headers); + let data = context.data; + + utils$1.forEach(fns, function transform(fn) { + data = fn.call(config, data, headers.normalize(), response ? response.status : undefined); + }); + + headers.normalize(); + + return data; +} + +function isCancel(value) { + return !!(value && value.__CANCEL__); +} + +/** + * A `CanceledError` is an object that is thrown when an operation is canceled. + * + * @param {string=} message The message. + * @param {Object=} config The config. + * @param {Object=} request The request. + * + * @returns {CanceledError} The created error. + */ +function CanceledError(message, config, request) { + // eslint-disable-next-line no-eq-null,eqeqeq + AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request); + this.name = 'CanceledError'; +} + +utils$1.inherits(CanceledError, AxiosError, { + __CANCEL__: true +}); + +/** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + * + * @returns {object} The response. + */ +function settle(resolve, reject, response) { + const validateStatus = response.config.validateStatus; + if (!response.status || !validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(new AxiosError( + 'Request failed with status code ' + response.status, + [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4], + response.config, + response.request, + response + )); + } +} + +/** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ +function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url); +} + +/** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * + * @returns {string} The combined URL + */ +function combineURLs(baseURL, relativeURL) { + return relativeURL + ? baseURL.replace(/\/?\/$/, '') + '/' + relativeURL.replace(/^\/+/, '') + : baseURL; +} + +/** + * Creates a new URL by combining the baseURL with the requestedURL, + * only when the requestedURL is not already an absolute URL. + * If the requestURL is absolute, this function returns the requestedURL untouched. + * + * @param {string} baseURL The base URL + * @param {string} requestedURL Absolute or relative URL to combine + * + * @returns {string} The combined full path + */ +function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) { + let isRelativeUrl = !isAbsoluteURL(requestedURL); + if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) { + return combineURLs(baseURL, requestedURL); + } + return requestedURL; +} + +const VERSION = "1.10.0"; + +function parseProtocol(url) { + const match = /^([-+\w]{1,25})(:?\/\/|:)/.exec(url); + return match && match[1] || ''; +} + +const DATA_URL_PATTERN = /^(?:([^;]+);)?(?:[^;]+;)?(base64|),([\s\S]*)$/; + +/** + * Parse data uri to a Buffer or Blob + * + * @param {String} uri + * @param {?Boolean} asBlob + * @param {?Object} options + * @param {?Function} options.Blob + * + * @returns {Buffer|Blob} + */ +function fromDataURI(uri, asBlob, options) { + const _Blob = options && options.Blob || platform.classes.Blob; + const protocol = parseProtocol(uri); + + if (asBlob === undefined && _Blob) { + asBlob = true; + } + + if (protocol === 'data') { + uri = protocol.length ? uri.slice(protocol.length + 1) : uri; + + const match = DATA_URL_PATTERN.exec(uri); + + if (!match) { + throw new AxiosError('Invalid URL', AxiosError.ERR_INVALID_URL); + } + + const mime = match[1]; + const isBase64 = match[2]; + const body = match[3]; + const buffer = Buffer.from(decodeURIComponent(body), isBase64 ? 'base64' : 'utf8'); + + if (asBlob) { + if (!_Blob) { + throw new AxiosError('Blob is not supported', AxiosError.ERR_NOT_SUPPORT); + } + + return new _Blob([buffer], {type: mime}); + } + + return buffer; + } + + throw new AxiosError('Unsupported protocol ' + protocol, AxiosError.ERR_NOT_SUPPORT); +} + +const kInternals = Symbol('internals'); + +class AxiosTransformStream extends stream__default["default"].Transform{ + constructor(options) { + options = utils$1.toFlatObject(options, { + maxRate: 0, + chunkSize: 64 * 1024, + minChunkSize: 100, + timeWindow: 500, + ticksRate: 2, + samplesCount: 15 + }, null, (prop, source) => { + return !utils$1.isUndefined(source[prop]); + }); + + super({ + readableHighWaterMark: options.chunkSize + }); + + const internals = this[kInternals] = { + timeWindow: options.timeWindow, + chunkSize: options.chunkSize, + maxRate: options.maxRate, + minChunkSize: options.minChunkSize, + bytesSeen: 0, + isCaptured: false, + notifiedBytesLoaded: 0, + ts: Date.now(), + bytes: 0, + onReadCallback: null + }; + + this.on('newListener', event => { + if (event === 'progress') { + if (!internals.isCaptured) { + internals.isCaptured = true; + } + } + }); + } + + _read(size) { + const internals = this[kInternals]; + + if (internals.onReadCallback) { + internals.onReadCallback(); + } + + return super._read(size); + } + + _transform(chunk, encoding, callback) { + const internals = this[kInternals]; + const maxRate = internals.maxRate; + + const readableHighWaterMark = this.readableHighWaterMark; + + const timeWindow = internals.timeWindow; + + const divider = 1000 / timeWindow; + const bytesThreshold = (maxRate / divider); + const minChunkSize = internals.minChunkSize !== false ? Math.max(internals.minChunkSize, bytesThreshold * 0.01) : 0; + + const pushChunk = (_chunk, _callback) => { + const bytes = Buffer.byteLength(_chunk); + internals.bytesSeen += bytes; + internals.bytes += bytes; + + internals.isCaptured && this.emit('progress', internals.bytesSeen); + + if (this.push(_chunk)) { + process.nextTick(_callback); + } else { + internals.onReadCallback = () => { + internals.onReadCallback = null; + process.nextTick(_callback); + }; + } + }; + + const transformChunk = (_chunk, _callback) => { + const chunkSize = Buffer.byteLength(_chunk); + let chunkRemainder = null; + let maxChunkSize = readableHighWaterMark; + let bytesLeft; + let passed = 0; + + if (maxRate) { + const now = Date.now(); + + if (!internals.ts || (passed = (now - internals.ts)) >= timeWindow) { + internals.ts = now; + bytesLeft = bytesThreshold - internals.bytes; + internals.bytes = bytesLeft < 0 ? -bytesLeft : 0; + passed = 0; + } + + bytesLeft = bytesThreshold - internals.bytes; + } + + if (maxRate) { + if (bytesLeft <= 0) { + // next time window + return setTimeout(() => { + _callback(null, _chunk); + }, timeWindow - passed); + } + + if (bytesLeft < maxChunkSize) { + maxChunkSize = bytesLeft; + } + } + + if (maxChunkSize && chunkSize > maxChunkSize && (chunkSize - maxChunkSize) > minChunkSize) { + chunkRemainder = _chunk.subarray(maxChunkSize); + _chunk = _chunk.subarray(0, maxChunkSize); + } + + pushChunk(_chunk, chunkRemainder ? () => { + process.nextTick(_callback, null, chunkRemainder); + } : _callback); + }; + + transformChunk(chunk, function transformNextChunk(err, _chunk) { + if (err) { + return callback(err); + } + + if (_chunk) { + transformChunk(_chunk, transformNextChunk); + } else { + callback(null); + } + }); + } +} + +const AxiosTransformStream$1 = AxiosTransformStream; + +const {asyncIterator} = Symbol; + +const readBlob = async function* (blob) { + if (blob.stream) { + yield* blob.stream(); + } else if (blob.arrayBuffer) { + yield await blob.arrayBuffer(); + } else if (blob[asyncIterator]) { + yield* blob[asyncIterator](); + } else { + yield blob; + } +}; + +const readBlob$1 = readBlob; + +const BOUNDARY_ALPHABET = platform.ALPHABET.ALPHA_DIGIT + '-_'; + +const textEncoder = typeof TextEncoder === 'function' ? new TextEncoder() : new util__default["default"].TextEncoder(); + +const CRLF = '\r\n'; +const CRLF_BYTES = textEncoder.encode(CRLF); +const CRLF_BYTES_COUNT = 2; + +class FormDataPart { + constructor(name, value) { + const {escapeName} = this.constructor; + const isStringValue = utils$1.isString(value); + + let headers = `Content-Disposition: form-data; name="${escapeName(name)}"${ + !isStringValue && value.name ? `; filename="${escapeName(value.name)}"` : '' + }${CRLF}`; + + if (isStringValue) { + value = textEncoder.encode(String(value).replace(/\r?\n|\r\n?/g, CRLF)); + } else { + headers += `Content-Type: ${value.type || "application/octet-stream"}${CRLF}`; + } + + this.headers = textEncoder.encode(headers + CRLF); + + this.contentLength = isStringValue ? value.byteLength : value.size; + + this.size = this.headers.byteLength + this.contentLength + CRLF_BYTES_COUNT; + + this.name = name; + this.value = value; + } + + async *encode(){ + yield this.headers; + + const {value} = this; + + if(utils$1.isTypedArray(value)) { + yield value; + } else { + yield* readBlob$1(value); + } + + yield CRLF_BYTES; + } + + static escapeName(name) { + return String(name).replace(/[\r\n"]/g, (match) => ({ + '\r' : '%0D', + '\n' : '%0A', + '"' : '%22', + }[match])); + } +} + +const formDataToStream = (form, headersHandler, options) => { + const { + tag = 'form-data-boundary', + size = 25, + boundary = tag + '-' + platform.generateString(size, BOUNDARY_ALPHABET) + } = options || {}; + + if(!utils$1.isFormData(form)) { + throw TypeError('FormData instance required'); + } + + if (boundary.length < 1 || boundary.length > 70) { + throw Error('boundary must be 10-70 characters long') + } + + const boundaryBytes = textEncoder.encode('--' + boundary + CRLF); + const footerBytes = textEncoder.encode('--' + boundary + '--' + CRLF); + let contentLength = footerBytes.byteLength; + + const parts = Array.from(form.entries()).map(([name, value]) => { + const part = new FormDataPart(name, value); + contentLength += part.size; + return part; + }); + + contentLength += boundaryBytes.byteLength * parts.length; + + contentLength = utils$1.toFiniteNumber(contentLength); + + const computedHeaders = { + 'Content-Type': `multipart/form-data; boundary=${boundary}` + }; + + if (Number.isFinite(contentLength)) { + computedHeaders['Content-Length'] = contentLength; + } + + headersHandler && headersHandler(computedHeaders); + + return stream.Readable.from((async function *() { + for(const part of parts) { + yield boundaryBytes; + yield* part.encode(); + } + + yield footerBytes; + })()); +}; + +const formDataToStream$1 = formDataToStream; + +class ZlibHeaderTransformStream extends stream__default["default"].Transform { + __transform(chunk, encoding, callback) { + this.push(chunk); + callback(); + } + + _transform(chunk, encoding, callback) { + if (chunk.length !== 0) { + this._transform = this.__transform; + + // Add Default Compression headers if no zlib headers are present + if (chunk[0] !== 120) { // Hex: 78 + const header = Buffer.alloc(2); + header[0] = 120; // Hex: 78 + header[1] = 156; // Hex: 9C + this.push(header, encoding); + } + } + + this.__transform(chunk, encoding, callback); + } +} + +const ZlibHeaderTransformStream$1 = ZlibHeaderTransformStream; + +const callbackify = (fn, reducer) => { + return utils$1.isAsyncFn(fn) ? function (...args) { + const cb = args.pop(); + fn.apply(this, args).then((value) => { + try { + reducer ? cb(null, ...reducer(value)) : cb(null, value); + } catch (err) { + cb(err); + } + }, cb); + } : fn; +}; + +const callbackify$1 = callbackify; + +/** + * Calculate data maxRate + * @param {Number} [samplesCount= 10] + * @param {Number} [min= 1000] + * @returns {Function} + */ +function speedometer(samplesCount, min) { + samplesCount = samplesCount || 10; + const bytes = new Array(samplesCount); + const timestamps = new Array(samplesCount); + let head = 0; + let tail = 0; + let firstSampleTS; + + min = min !== undefined ? min : 1000; + + return function push(chunkLength) { + const now = Date.now(); + + const startedAt = timestamps[tail]; + + if (!firstSampleTS) { + firstSampleTS = now; + } + + bytes[head] = chunkLength; + timestamps[head] = now; + + let i = tail; + let bytesCount = 0; + + while (i !== head) { + bytesCount += bytes[i++]; + i = i % samplesCount; + } + + head = (head + 1) % samplesCount; + + if (head === tail) { + tail = (tail + 1) % samplesCount; + } + + if (now - firstSampleTS < min) { + return; + } + + const passed = startedAt && now - startedAt; + + return passed ? Math.round(bytesCount * 1000 / passed) : undefined; + }; +} + +/** + * Throttle decorator + * @param {Function} fn + * @param {Number} freq + * @return {Function} + */ +function throttle(fn, freq) { + let timestamp = 0; + let threshold = 1000 / freq; + let lastArgs; + let timer; + + const invoke = (args, now = Date.now()) => { + timestamp = now; + lastArgs = null; + if (timer) { + clearTimeout(timer); + timer = null; + } + fn.apply(null, args); + }; + + const throttled = (...args) => { + const now = Date.now(); + const passed = now - timestamp; + if ( passed >= threshold) { + invoke(args, now); + } else { + lastArgs = args; + if (!timer) { + timer = setTimeout(() => { + timer = null; + invoke(lastArgs); + }, threshold - passed); + } + } + }; + + const flush = () => lastArgs && invoke(lastArgs); + + return [throttled, flush]; +} + +const progressEventReducer = (listener, isDownloadStream, freq = 3) => { + let bytesNotified = 0; + const _speedometer = speedometer(50, 250); + + return throttle(e => { + const loaded = e.loaded; + const total = e.lengthComputable ? e.total : undefined; + const progressBytes = loaded - bytesNotified; + const rate = _speedometer(progressBytes); + const inRange = loaded <= total; + + bytesNotified = loaded; + + const data = { + loaded, + total, + progress: total ? (loaded / total) : undefined, + bytes: progressBytes, + rate: rate ? rate : undefined, + estimated: rate && total && inRange ? (total - loaded) / rate : undefined, + event: e, + lengthComputable: total != null, + [isDownloadStream ? 'download' : 'upload']: true + }; + + listener(data); + }, freq); +}; + +const progressEventDecorator = (total, throttled) => { + const lengthComputable = total != null; + + return [(loaded) => throttled[0]({ + lengthComputable, + total, + loaded + }), throttled[1]]; +}; + +const asyncDecorator = (fn) => (...args) => utils$1.asap(() => fn(...args)); + +const zlibOptions = { + flush: zlib__default["default"].constants.Z_SYNC_FLUSH, + finishFlush: zlib__default["default"].constants.Z_SYNC_FLUSH +}; + +const brotliOptions = { + flush: zlib__default["default"].constants.BROTLI_OPERATION_FLUSH, + finishFlush: zlib__default["default"].constants.BROTLI_OPERATION_FLUSH +}; + +const isBrotliSupported = utils$1.isFunction(zlib__default["default"].createBrotliDecompress); + +const {http: httpFollow, https: httpsFollow} = followRedirects__default["default"]; + +const isHttps = /https:?/; + +const supportedProtocols = platform.protocols.map(protocol => { + return protocol + ':'; +}); + +const flushOnFinish = (stream, [throttled, flush]) => { + stream + .on('end', flush) + .on('error', flush); + + return throttled; +}; + +/** + * If the proxy or config beforeRedirects functions are defined, call them with the options + * object. + * + * @param {Object} options - The options object that was passed to the request. + * + * @returns {Object} + */ +function dispatchBeforeRedirect(options, responseDetails) { + if (options.beforeRedirects.proxy) { + options.beforeRedirects.proxy(options); + } + if (options.beforeRedirects.config) { + options.beforeRedirects.config(options, responseDetails); + } +} + +/** + * If the proxy or config afterRedirects functions are defined, call them with the options + * + * @param {http.ClientRequestArgs} options + * @param {AxiosProxyConfig} configProxy configuration from Axios options object + * @param {string} location + * + * @returns {http.ClientRequestArgs} + */ +function setProxy(options, configProxy, location) { + let proxy = configProxy; + if (!proxy && proxy !== false) { + const proxyUrl = proxyFromEnv__default["default"].getProxyForUrl(location); + if (proxyUrl) { + proxy = new URL(proxyUrl); + } + } + if (proxy) { + // Basic proxy authorization + if (proxy.username) { + proxy.auth = (proxy.username || '') + ':' + (proxy.password || ''); + } + + if (proxy.auth) { + // Support proxy auth object form + if (proxy.auth.username || proxy.auth.password) { + proxy.auth = (proxy.auth.username || '') + ':' + (proxy.auth.password || ''); + } + const base64 = Buffer + .from(proxy.auth, 'utf8') + .toString('base64'); + options.headers['Proxy-Authorization'] = 'Basic ' + base64; + } + + options.headers.host = options.hostname + (options.port ? ':' + options.port : ''); + const proxyHost = proxy.hostname || proxy.host; + options.hostname = proxyHost; + // Replace 'host' since options is not a URL object + options.host = proxyHost; + options.port = proxy.port; + options.path = location; + if (proxy.protocol) { + options.protocol = proxy.protocol.includes(':') ? proxy.protocol : `${proxy.protocol}:`; + } + } + + options.beforeRedirects.proxy = function beforeRedirect(redirectOptions) { + // Configure proxy for redirected request, passing the original config proxy to apply + // the exact same logic as if the redirected request was performed by axios directly. + setProxy(redirectOptions, configProxy, redirectOptions.href); + }; +} + +const isHttpAdapterSupported = typeof process !== 'undefined' && utils$1.kindOf(process) === 'process'; + +// temporary hotfix + +const wrapAsync = (asyncExecutor) => { + return new Promise((resolve, reject) => { + let onDone; + let isDone; + + const done = (value, isRejected) => { + if (isDone) return; + isDone = true; + onDone && onDone(value, isRejected); + }; + + const _resolve = (value) => { + done(value); + resolve(value); + }; + + const _reject = (reason) => { + done(reason, true); + reject(reason); + }; + + asyncExecutor(_resolve, _reject, (onDoneHandler) => (onDone = onDoneHandler)).catch(_reject); + }) +}; + +const resolveFamily = ({address, family}) => { + if (!utils$1.isString(address)) { + throw TypeError('address must be a string'); + } + return ({ + address, + family: family || (address.indexOf('.') < 0 ? 6 : 4) + }); +}; + +const buildAddressEntry = (address, family) => resolveFamily(utils$1.isObject(address) ? address : {address, family}); + +/*eslint consistent-return:0*/ +const httpAdapter = isHttpAdapterSupported && function httpAdapter(config) { + return wrapAsync(async function dispatchHttpRequest(resolve, reject, onDone) { + let {data, lookup, family} = config; + const {responseType, responseEncoding} = config; + const method = config.method.toUpperCase(); + let isDone; + let rejected = false; + let req; + + if (lookup) { + const _lookup = callbackify$1(lookup, (value) => utils$1.isArray(value) ? value : [value]); + // hotfix to support opt.all option which is required for node 20.x + lookup = (hostname, opt, cb) => { + _lookup(hostname, opt, (err, arg0, arg1) => { + if (err) { + return cb(err); + } + + const addresses = utils$1.isArray(arg0) ? arg0.map(addr => buildAddressEntry(addr)) : [buildAddressEntry(arg0, arg1)]; + + opt.all ? cb(err, addresses) : cb(err, addresses[0].address, addresses[0].family); + }); + }; + } + + // temporary internal emitter until the AxiosRequest class will be implemented + const emitter = new events.EventEmitter(); + + const onFinished = () => { + if (config.cancelToken) { + config.cancelToken.unsubscribe(abort); + } + + if (config.signal) { + config.signal.removeEventListener('abort', abort); + } + + emitter.removeAllListeners(); + }; + + onDone((value, isRejected) => { + isDone = true; + if (isRejected) { + rejected = true; + onFinished(); + } + }); + + function abort(reason) { + emitter.emit('abort', !reason || reason.type ? new CanceledError(null, config, req) : reason); + } + + emitter.once('abort', reject); + + if (config.cancelToken || config.signal) { + config.cancelToken && config.cancelToken.subscribe(abort); + if (config.signal) { + config.signal.aborted ? abort() : config.signal.addEventListener('abort', abort); + } + } + + // Parse url + const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + const parsed = new URL(fullPath, platform.hasBrowserEnv ? platform.origin : undefined); + const protocol = parsed.protocol || supportedProtocols[0]; + + if (protocol === 'data:') { + let convertedData; + + if (method !== 'GET') { + return settle(resolve, reject, { + status: 405, + statusText: 'method not allowed', + headers: {}, + config + }); + } + + try { + convertedData = fromDataURI(config.url, responseType === 'blob', { + Blob: config.env && config.env.Blob + }); + } catch (err) { + throw AxiosError.from(err, AxiosError.ERR_BAD_REQUEST, config); + } + + if (responseType === 'text') { + convertedData = convertedData.toString(responseEncoding); + + if (!responseEncoding || responseEncoding === 'utf8') { + convertedData = utils$1.stripBOM(convertedData); + } + } else if (responseType === 'stream') { + convertedData = stream__default["default"].Readable.from(convertedData); + } + + return settle(resolve, reject, { + data: convertedData, + status: 200, + statusText: 'OK', + headers: new AxiosHeaders$1(), + config + }); + } + + if (supportedProtocols.indexOf(protocol) === -1) { + return reject(new AxiosError( + 'Unsupported protocol ' + protocol, + AxiosError.ERR_BAD_REQUEST, + config + )); + } + + const headers = AxiosHeaders$1.from(config.headers).normalize(); + + // Set User-Agent (required by some servers) + // See https://github.com/axios/axios/issues/69 + // User-Agent is specified; handle case where no UA header is desired + // Only set header if it hasn't been set in config + headers.set('User-Agent', 'axios/' + VERSION, false); + + const {onUploadProgress, onDownloadProgress} = config; + const maxRate = config.maxRate; + let maxUploadRate = undefined; + let maxDownloadRate = undefined; + + // support for spec compliant FormData objects + if (utils$1.isSpecCompliantForm(data)) { + const userBoundary = headers.getContentType(/boundary=([-_\w\d]{10,70})/i); + + data = formDataToStream$1(data, (formHeaders) => { + headers.set(formHeaders); + }, { + tag: `axios-${VERSION}-boundary`, + boundary: userBoundary && userBoundary[1] || undefined + }); + // support for https://www.npmjs.com/package/form-data api + } else if (utils$1.isFormData(data) && utils$1.isFunction(data.getHeaders)) { + headers.set(data.getHeaders()); + + if (!headers.hasContentLength()) { + try { + const knownLength = await util__default["default"].promisify(data.getLength).call(data); + Number.isFinite(knownLength) && knownLength >= 0 && headers.setContentLength(knownLength); + /*eslint no-empty:0*/ + } catch (e) { + } + } + } else if (utils$1.isBlob(data) || utils$1.isFile(data)) { + data.size && headers.setContentType(data.type || 'application/octet-stream'); + headers.setContentLength(data.size || 0); + data = stream__default["default"].Readable.from(readBlob$1(data)); + } else if (data && !utils$1.isStream(data)) { + if (Buffer.isBuffer(data)) ; else if (utils$1.isArrayBuffer(data)) { + data = Buffer.from(new Uint8Array(data)); + } else if (utils$1.isString(data)) { + data = Buffer.from(data, 'utf-8'); + } else { + return reject(new AxiosError( + 'Data after transformation must be a string, an ArrayBuffer, a Buffer, or a Stream', + AxiosError.ERR_BAD_REQUEST, + config + )); + } + + // Add Content-Length header if data exists + headers.setContentLength(data.length, false); + + if (config.maxBodyLength > -1 && data.length > config.maxBodyLength) { + return reject(new AxiosError( + 'Request body larger than maxBodyLength limit', + AxiosError.ERR_BAD_REQUEST, + config + )); + } + } + + const contentLength = utils$1.toFiniteNumber(headers.getContentLength()); + + if (utils$1.isArray(maxRate)) { + maxUploadRate = maxRate[0]; + maxDownloadRate = maxRate[1]; + } else { + maxUploadRate = maxDownloadRate = maxRate; + } + + if (data && (onUploadProgress || maxUploadRate)) { + if (!utils$1.isStream(data)) { + data = stream__default["default"].Readable.from(data, {objectMode: false}); + } + + data = stream__default["default"].pipeline([data, new AxiosTransformStream$1({ + maxRate: utils$1.toFiniteNumber(maxUploadRate) + })], utils$1.noop); + + onUploadProgress && data.on('progress', flushOnFinish( + data, + progressEventDecorator( + contentLength, + progressEventReducer(asyncDecorator(onUploadProgress), false, 3) + ) + )); + } + + // HTTP basic authentication + let auth = undefined; + if (config.auth) { + const username = config.auth.username || ''; + const password = config.auth.password || ''; + auth = username + ':' + password; + } + + if (!auth && parsed.username) { + const urlUsername = parsed.username; + const urlPassword = parsed.password; + auth = urlUsername + ':' + urlPassword; + } + + auth && headers.delete('authorization'); + + let path; + + try { + path = buildURL( + parsed.pathname + parsed.search, + config.params, + config.paramsSerializer + ).replace(/^\?/, ''); + } catch (err) { + const customErr = new Error(err.message); + customErr.config = config; + customErr.url = config.url; + customErr.exists = true; + return reject(customErr); + } + + headers.set( + 'Accept-Encoding', + 'gzip, compress, deflate' + (isBrotliSupported ? ', br' : ''), false + ); + + const options = { + path, + method: method, + headers: headers.toJSON(), + agents: { http: config.httpAgent, https: config.httpsAgent }, + auth, + protocol, + family, + beforeRedirect: dispatchBeforeRedirect, + beforeRedirects: {} + }; + + // cacheable-lookup integration hotfix + !utils$1.isUndefined(lookup) && (options.lookup = lookup); + + if (config.socketPath) { + options.socketPath = config.socketPath; + } else { + options.hostname = parsed.hostname.startsWith("[") ? parsed.hostname.slice(1, -1) : parsed.hostname; + options.port = parsed.port; + setProxy(options, config.proxy, protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path); + } + + let transport; + const isHttpsRequest = isHttps.test(options.protocol); + options.agent = isHttpsRequest ? config.httpsAgent : config.httpAgent; + if (config.transport) { + transport = config.transport; + } else if (config.maxRedirects === 0) { + transport = isHttpsRequest ? https__default["default"] : http__default["default"]; + } else { + if (config.maxRedirects) { + options.maxRedirects = config.maxRedirects; + } + if (config.beforeRedirect) { + options.beforeRedirects.config = config.beforeRedirect; + } + transport = isHttpsRequest ? httpsFollow : httpFollow; + } + + if (config.maxBodyLength > -1) { + options.maxBodyLength = config.maxBodyLength; + } else { + // follow-redirects does not skip comparison, so it should always succeed for axios -1 unlimited + options.maxBodyLength = Infinity; + } + + if (config.insecureHTTPParser) { + options.insecureHTTPParser = config.insecureHTTPParser; + } + + // Create the request + req = transport.request(options, function handleResponse(res) { + if (req.destroyed) return; + + const streams = [res]; + + const responseLength = +res.headers['content-length']; + + if (onDownloadProgress || maxDownloadRate) { + const transformStream = new AxiosTransformStream$1({ + maxRate: utils$1.toFiniteNumber(maxDownloadRate) + }); + + onDownloadProgress && transformStream.on('progress', flushOnFinish( + transformStream, + progressEventDecorator( + responseLength, + progressEventReducer(asyncDecorator(onDownloadProgress), true, 3) + ) + )); + + streams.push(transformStream); + } + + // decompress the response body transparently if required + let responseStream = res; + + // return the last request in case of redirects + const lastRequest = res.req || req; + + // if decompress disabled we should not decompress + if (config.decompress !== false && res.headers['content-encoding']) { + // if no content, but headers still say that it is encoded, + // remove the header not confuse downstream operations + if (method === 'HEAD' || res.statusCode === 204) { + delete res.headers['content-encoding']; + } + + switch ((res.headers['content-encoding'] || '').toLowerCase()) { + /*eslint default-case:0*/ + case 'gzip': + case 'x-gzip': + case 'compress': + case 'x-compress': + // add the unzipper to the body stream processing pipeline + streams.push(zlib__default["default"].createUnzip(zlibOptions)); + + // remove the content-encoding in order to not confuse downstream operations + delete res.headers['content-encoding']; + break; + case 'deflate': + streams.push(new ZlibHeaderTransformStream$1()); + + // add the unzipper to the body stream processing pipeline + streams.push(zlib__default["default"].createUnzip(zlibOptions)); + + // remove the content-encoding in order to not confuse downstream operations + delete res.headers['content-encoding']; + break; + case 'br': + if (isBrotliSupported) { + streams.push(zlib__default["default"].createBrotliDecompress(brotliOptions)); + delete res.headers['content-encoding']; + } + } + } + + responseStream = streams.length > 1 ? stream__default["default"].pipeline(streams, utils$1.noop) : streams[0]; + + const offListeners = stream__default["default"].finished(responseStream, () => { + offListeners(); + onFinished(); + }); + + const response = { + status: res.statusCode, + statusText: res.statusMessage, + headers: new AxiosHeaders$1(res.headers), + config, + request: lastRequest + }; + + if (responseType === 'stream') { + response.data = responseStream; + settle(resolve, reject, response); + } else { + const responseBuffer = []; + let totalResponseBytes = 0; + + responseStream.on('data', function handleStreamData(chunk) { + responseBuffer.push(chunk); + totalResponseBytes += chunk.length; + + // make sure the content length is not over the maxContentLength if specified + if (config.maxContentLength > -1 && totalResponseBytes > config.maxContentLength) { + // stream.destroy() emit aborted event before calling reject() on Node.js v16 + rejected = true; + responseStream.destroy(); + reject(new AxiosError('maxContentLength size of ' + config.maxContentLength + ' exceeded', + AxiosError.ERR_BAD_RESPONSE, config, lastRequest)); + } + }); + + responseStream.on('aborted', function handlerStreamAborted() { + if (rejected) { + return; + } + + const err = new AxiosError( + 'stream has been aborted', + AxiosError.ERR_BAD_RESPONSE, + config, + lastRequest + ); + responseStream.destroy(err); + reject(err); + }); + + responseStream.on('error', function handleStreamError(err) { + if (req.destroyed) return; + reject(AxiosError.from(err, null, config, lastRequest)); + }); + + responseStream.on('end', function handleStreamEnd() { + try { + let responseData = responseBuffer.length === 1 ? responseBuffer[0] : Buffer.concat(responseBuffer); + if (responseType !== 'arraybuffer') { + responseData = responseData.toString(responseEncoding); + if (!responseEncoding || responseEncoding === 'utf8') { + responseData = utils$1.stripBOM(responseData); + } + } + response.data = responseData; + } catch (err) { + return reject(AxiosError.from(err, null, config, response.request, response)); + } + settle(resolve, reject, response); + }); + } + + emitter.once('abort', err => { + if (!responseStream.destroyed) { + responseStream.emit('error', err); + responseStream.destroy(); + } + }); + }); + + emitter.once('abort', err => { + reject(err); + req.destroy(err); + }); + + // Handle errors + req.on('error', function handleRequestError(err) { + // @todo remove + // if (req.aborted && err.code !== AxiosError.ERR_FR_TOO_MANY_REDIRECTS) return; + reject(AxiosError.from(err, null, config, req)); + }); + + // set tcp keep alive to prevent drop connection by peer + req.on('socket', function handleRequestSocket(socket) { + // default interval of sending ack packet is 1 minute + socket.setKeepAlive(true, 1000 * 60); + }); + + // Handle request timeout + if (config.timeout) { + // This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types. + const timeout = parseInt(config.timeout, 10); + + if (Number.isNaN(timeout)) { + reject(new AxiosError( + 'error trying to parse `config.timeout` to int', + AxiosError.ERR_BAD_OPTION_VALUE, + config, + req + )); + + return; + } + + // Sometime, the response will be very slow, and does not respond, the connect event will be block by event loop system. + // And timer callback will be fired, and abort() will be invoked before connection, then get "socket hang up" and code ECONNRESET. + // At this time, if we have a large number of request, nodejs will hang up some socket on background. and the number will up and up. + // And then these socket which be hang up will devouring CPU little by little. + // ClientRequest.setTimeout will be fired on the specify milliseconds, and can make sure that abort() will be fired after connect. + req.setTimeout(timeout, function handleRequestTimeout() { + if (isDone) return; + let timeoutErrorMessage = config.timeout ? 'timeout of ' + config.timeout + 'ms exceeded' : 'timeout exceeded'; + const transitional = config.transitional || transitionalDefaults; + if (config.timeoutErrorMessage) { + timeoutErrorMessage = config.timeoutErrorMessage; + } + reject(new AxiosError( + timeoutErrorMessage, + transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, + config, + req + )); + abort(); + }); + } + + + // Send the request + if (utils$1.isStream(data)) { + let ended = false; + let errored = false; + + data.on('end', () => { + ended = true; + }); + + data.once('error', err => { + errored = true; + req.destroy(err); + }); + + data.on('close', () => { + if (!ended && !errored) { + abort(new CanceledError('Request stream has been aborted', config, req)); + } + }); + + data.pipe(req); + } else { + req.end(data); + } + }); +}; + +const isURLSameOrigin = platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => { + url = new URL(url, platform.origin); + + return ( + origin.protocol === url.protocol && + origin.host === url.host && + (isMSIE || origin.port === url.port) + ); +})( + new URL(platform.origin), + platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent) +) : () => true; + +const cookies = platform.hasStandardBrowserEnv ? + + // Standard browser envs support document.cookie + { + write(name, value, expires, path, domain, secure) { + const cookie = [name + '=' + encodeURIComponent(value)]; + + utils$1.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString()); + + utils$1.isString(path) && cookie.push('path=' + path); + + utils$1.isString(domain) && cookie.push('domain=' + domain); + + secure === true && cookie.push('secure'); + + document.cookie = cookie.join('; '); + }, + + read(name) { + const match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return (match ? decodeURIComponent(match[3]) : null); + }, + + remove(name) { + this.write(name, '', Date.now() - 86400000); + } + } + + : + + // Non-standard browser env (web workers, react-native) lack needed support. + { + write() {}, + read() { + return null; + }, + remove() {} + }; + +const headersToObject = (thing) => thing instanceof AxiosHeaders$1 ? { ...thing } : thing; + +/** + * Config-specific merge-function which creates a new config-object + * by merging two configuration objects together. + * + * @param {Object} config1 + * @param {Object} config2 + * + * @returns {Object} New object resulting from merging config2 to config1 + */ +function mergeConfig(config1, config2) { + // eslint-disable-next-line no-param-reassign + config2 = config2 || {}; + const config = {}; + + function getMergedValue(target, source, prop, caseless) { + if (utils$1.isPlainObject(target) && utils$1.isPlainObject(source)) { + return utils$1.merge.call({caseless}, target, source); + } else if (utils$1.isPlainObject(source)) { + return utils$1.merge({}, source); + } else if (utils$1.isArray(source)) { + return source.slice(); + } + return source; + } + + // eslint-disable-next-line consistent-return + function mergeDeepProperties(a, b, prop , caseless) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(a, b, prop , caseless); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a, prop , caseless); + } + } + + // eslint-disable-next-line consistent-return + function valueFromConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } + } + + // eslint-disable-next-line consistent-return + function defaultToConfig2(a, b) { + if (!utils$1.isUndefined(b)) { + return getMergedValue(undefined, b); + } else if (!utils$1.isUndefined(a)) { + return getMergedValue(undefined, a); + } + } + + // eslint-disable-next-line consistent-return + function mergeDirectKeys(a, b, prop) { + if (prop in config2) { + return getMergedValue(a, b); + } else if (prop in config1) { + return getMergedValue(undefined, a); + } + } + + const mergeMap = { + url: valueFromConfig2, + method: valueFromConfig2, + data: valueFromConfig2, + baseURL: defaultToConfig2, + transformRequest: defaultToConfig2, + transformResponse: defaultToConfig2, + paramsSerializer: defaultToConfig2, + timeout: defaultToConfig2, + timeoutMessage: defaultToConfig2, + withCredentials: defaultToConfig2, + withXSRFToken: defaultToConfig2, + adapter: defaultToConfig2, + responseType: defaultToConfig2, + xsrfCookieName: defaultToConfig2, + xsrfHeaderName: defaultToConfig2, + onUploadProgress: defaultToConfig2, + onDownloadProgress: defaultToConfig2, + decompress: defaultToConfig2, + maxContentLength: defaultToConfig2, + maxBodyLength: defaultToConfig2, + beforeRedirect: defaultToConfig2, + transport: defaultToConfig2, + httpAgent: defaultToConfig2, + httpsAgent: defaultToConfig2, + cancelToken: defaultToConfig2, + socketPath: defaultToConfig2, + responseEncoding: defaultToConfig2, + validateStatus: mergeDirectKeys, + headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true) + }; + + utils$1.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) { + const merge = mergeMap[prop] || mergeDeepProperties; + const configValue = merge(config1[prop], config2[prop], prop); + (utils$1.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue); + }); + + return config; +} + +const resolveConfig = (config) => { + const newConfig = mergeConfig({}, config); + + let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig; + + newConfig.headers = headers = AxiosHeaders$1.from(headers); + + newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer); + + // HTTP basic authentication + if (auth) { + headers.set('Authorization', 'Basic ' + + btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : '')) + ); + } + + let contentType; + + if (utils$1.isFormData(data)) { + if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) { + headers.setContentType(undefined); // Let the browser set it + } else if ((contentType = headers.getContentType()) !== false) { + // fix semicolon duplication issue for ReactNative FormData implementation + const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : []; + headers.setContentType([type || 'multipart/form-data', ...tokens].join('; ')); + } + } + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + + if (platform.hasStandardBrowserEnv) { + withXSRFToken && utils$1.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig)); + + if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) { + // Add xsrf header + const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName); + + if (xsrfValue) { + headers.set(xsrfHeaderName, xsrfValue); + } + } + } + + return newConfig; +}; + +const isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined'; + +const xhrAdapter = isXHRAdapterSupported && function (config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + const _config = resolveConfig(config); + let requestData = _config.data; + const requestHeaders = AxiosHeaders$1.from(_config.headers).normalize(); + let {responseType, onUploadProgress, onDownloadProgress} = _config; + let onCanceled; + let uploadThrottled, downloadThrottled; + let flushUpload, flushDownload; + + function done() { + flushUpload && flushUpload(); // flush events + flushDownload && flushDownload(); // flush events + + _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled); + + _config.signal && _config.signal.removeEventListener('abort', onCanceled); + } + + let request = new XMLHttpRequest(); + + request.open(_config.method.toUpperCase(), _config.url, true); + + // Set the request timeout in MS + request.timeout = _config.timeout; + + function onloadend() { + if (!request) { + return; + } + // Prepare the response + const responseHeaders = AxiosHeaders$1.from( + 'getAllResponseHeaders' in request && request.getAllResponseHeaders() + ); + const responseData = !responseType || responseType === 'text' || responseType === 'json' ? + request.responseText : request.response; + const response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config, + request + }; + + settle(function _resolve(value) { + resolve(value); + done(); + }, function _reject(err) { + reject(err); + done(); + }, response); + + // Clean up request + request = null; + } + + if ('onloadend' in request) { + // Use onloadend if available + request.onloadend = onloadend; + } else { + // Listen for ready state to emulate onloadend + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + // readystate handler is calling before onerror or ontimeout handlers, + // so we should call onloadend on the next 'tick' + setTimeout(onloadend); + }; + } + + // Handle browser request cancellation (as opposed to a manual cancellation) + request.onabort = function handleAbort() { + if (!request) { + return; + } + + reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request)); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded'; + const transitional = _config.transitional || transitionalDefaults; + if (_config.timeoutErrorMessage) { + timeoutErrorMessage = _config.timeoutErrorMessage; + } + reject(new AxiosError( + timeoutErrorMessage, + transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, + config, + request)); + + // Clean up request + request = null; + }; + + // Remove Content-Type if data is undefined + requestData === undefined && requestHeaders.setContentType(null); + + // Add headers to the request + if ('setRequestHeader' in request) { + utils$1.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) { + request.setRequestHeader(key, val); + }); + } + + // Add withCredentials to request if needed + if (!utils$1.isUndefined(_config.withCredentials)) { + request.withCredentials = !!_config.withCredentials; + } + + // Add responseType to request if needed + if (responseType && responseType !== 'json') { + request.responseType = _config.responseType; + } + + // Handle progress if needed + if (onDownloadProgress) { + ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true)); + request.addEventListener('progress', downloadThrottled); + } + + // Not all browsers support upload events + if (onUploadProgress && request.upload) { + ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress)); + + request.upload.addEventListener('progress', uploadThrottled); + + request.upload.addEventListener('loadend', flushUpload); + } + + if (_config.cancelToken || _config.signal) { + // Handle cancellation + // eslint-disable-next-line func-names + onCanceled = cancel => { + if (!request) { + return; + } + reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel); + request.abort(); + request = null; + }; + + _config.cancelToken && _config.cancelToken.subscribe(onCanceled); + if (_config.signal) { + _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled); + } + } + + const protocol = parseProtocol(_config.url); + + if (protocol && platform.protocols.indexOf(protocol) === -1) { + reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config)); + return; + } + + + // Send the request + request.send(requestData || null); + }); +}; + +const composeSignals = (signals, timeout) => { + const {length} = (signals = signals ? signals.filter(Boolean) : []); + + if (timeout || length) { + let controller = new AbortController(); + + let aborted; + + const onabort = function (reason) { + if (!aborted) { + aborted = true; + unsubscribe(); + const err = reason instanceof Error ? reason : this.reason; + controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err)); + } + }; + + let timer = timeout && setTimeout(() => { + timer = null; + onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT)); + }, timeout); + + const unsubscribe = () => { + if (signals) { + timer && clearTimeout(timer); + timer = null; + signals.forEach(signal => { + signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort); + }); + signals = null; + } + }; + + signals.forEach((signal) => signal.addEventListener('abort', onabort)); + + const {signal} = controller; + + signal.unsubscribe = () => utils$1.asap(unsubscribe); + + return signal; + } +}; + +const composeSignals$1 = composeSignals; + +const streamChunk = function* (chunk, chunkSize) { + let len = chunk.byteLength; + + if (!chunkSize || len < chunkSize) { + yield chunk; + return; + } + + let pos = 0; + let end; + + while (pos < len) { + end = pos + chunkSize; + yield chunk.slice(pos, end); + pos = end; + } +}; + +const readBytes = async function* (iterable, chunkSize) { + for await (const chunk of readStream(iterable)) { + yield* streamChunk(chunk, chunkSize); + } +}; + +const readStream = async function* (stream) { + if (stream[Symbol.asyncIterator]) { + yield* stream; + return; + } + + const reader = stream.getReader(); + try { + for (;;) { + const {done, value} = await reader.read(); + if (done) { + break; + } + yield value; + } + } finally { + await reader.cancel(); + } +}; + +const trackStream = (stream, chunkSize, onProgress, onFinish) => { + const iterator = readBytes(stream, chunkSize); + + let bytes = 0; + let done; + let _onFinish = (e) => { + if (!done) { + done = true; + onFinish && onFinish(e); + } + }; + + return new ReadableStream({ + async pull(controller) { + try { + const {done, value} = await iterator.next(); + + if (done) { + _onFinish(); + controller.close(); + return; + } + + let len = value.byteLength; + if (onProgress) { + let loadedBytes = bytes += len; + onProgress(loadedBytes); + } + controller.enqueue(new Uint8Array(value)); + } catch (err) { + _onFinish(err); + throw err; + } + }, + cancel(reason) { + _onFinish(reason); + return iterator.return(); + } + }, { + highWaterMark: 2 + }) +}; + +const isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function'; +const isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function'; + +// used only inside the fetch adapter +const encodeText = isFetchSupported && (typeof TextEncoder === 'function' ? + ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) : + async (str) => new Uint8Array(await new Response(str).arrayBuffer()) +); + +const test = (fn, ...args) => { + try { + return !!fn(...args); + } catch (e) { + return false + } +}; + +const supportsRequestStream = isReadableStreamSupported && test(() => { + let duplexAccessed = false; + + const hasContentType = new Request(platform.origin, { + body: new ReadableStream(), + method: 'POST', + get duplex() { + duplexAccessed = true; + return 'half'; + }, + }).headers.has('Content-Type'); + + return duplexAccessed && !hasContentType; +}); + +const DEFAULT_CHUNK_SIZE = 64 * 1024; + +const supportsResponseStream = isReadableStreamSupported && + test(() => utils$1.isReadableStream(new Response('').body)); + + +const resolvers = { + stream: supportsResponseStream && ((res) => res.body) +}; + +isFetchSupported && (((res) => { + ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => { + !resolvers[type] && (resolvers[type] = utils$1.isFunction(res[type]) ? (res) => res[type]() : + (_, config) => { + throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config); + }); + }); +})(new Response)); + +const getBodyLength = async (body) => { + if (body == null) { + return 0; + } + + if(utils$1.isBlob(body)) { + return body.size; + } + + if(utils$1.isSpecCompliantForm(body)) { + const _request = new Request(platform.origin, { + method: 'POST', + body, + }); + return (await _request.arrayBuffer()).byteLength; + } + + if(utils$1.isArrayBufferView(body) || utils$1.isArrayBuffer(body)) { + return body.byteLength; + } + + if(utils$1.isURLSearchParams(body)) { + body = body + ''; + } + + if(utils$1.isString(body)) { + return (await encodeText(body)).byteLength; + } +}; + +const resolveBodyLength = async (headers, body) => { + const length = utils$1.toFiniteNumber(headers.getContentLength()); + + return length == null ? getBodyLength(body) : length; +}; + +const fetchAdapter = isFetchSupported && (async (config) => { + let { + url, + method, + data, + signal, + cancelToken, + timeout, + onDownloadProgress, + onUploadProgress, + responseType, + headers, + withCredentials = 'same-origin', + fetchOptions + } = resolveConfig(config); + + responseType = responseType ? (responseType + '').toLowerCase() : 'text'; + + let composedSignal = composeSignals$1([signal, cancelToken && cancelToken.toAbortSignal()], timeout); + + let request; + + const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => { + composedSignal.unsubscribe(); + }); + + let requestContentLength; + + try { + if ( + onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' && + (requestContentLength = await resolveBodyLength(headers, data)) !== 0 + ) { + let _request = new Request(url, { + method: 'POST', + body: data, + duplex: "half" + }); + + let contentTypeHeader; + + if (utils$1.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) { + headers.setContentType(contentTypeHeader); + } + + if (_request.body) { + const [onProgress, flush] = progressEventDecorator( + requestContentLength, + progressEventReducer(asyncDecorator(onUploadProgress)) + ); + + data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush); + } + } + + if (!utils$1.isString(withCredentials)) { + withCredentials = withCredentials ? 'include' : 'omit'; + } + + // Cloudflare Workers throws when credentials are defined + // see https://github.com/cloudflare/workerd/issues/902 + const isCredentialsSupported = "credentials" in Request.prototype; + request = new Request(url, { + ...fetchOptions, + signal: composedSignal, + method: method.toUpperCase(), + headers: headers.normalize().toJSON(), + body: data, + duplex: "half", + credentials: isCredentialsSupported ? withCredentials : undefined + }); + + let response = await fetch(request, fetchOptions); + + const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response'); + + if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) { + const options = {}; + + ['status', 'statusText', 'headers'].forEach(prop => { + options[prop] = response[prop]; + }); + + const responseContentLength = utils$1.toFiniteNumber(response.headers.get('content-length')); + + const [onProgress, flush] = onDownloadProgress && progressEventDecorator( + responseContentLength, + progressEventReducer(asyncDecorator(onDownloadProgress), true) + ) || []; + + response = new Response( + trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => { + flush && flush(); + unsubscribe && unsubscribe(); + }), + options + ); + } + + responseType = responseType || 'text'; + + let responseData = await resolvers[utils$1.findKey(resolvers, responseType) || 'text'](response, config); + + !isStreamResponse && unsubscribe && unsubscribe(); + + return await new Promise((resolve, reject) => { + settle(resolve, reject, { + data: responseData, + headers: AxiosHeaders$1.from(response.headers), + status: response.status, + statusText: response.statusText, + config, + request + }); + }) + } catch (err) { + unsubscribe && unsubscribe(); + + if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) { + throw Object.assign( + new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request), + { + cause: err.cause || err + } + ) + } + + throw AxiosError.from(err, err && err.code, config, request); + } +}); + +const knownAdapters = { + http: httpAdapter, + xhr: xhrAdapter, + fetch: fetchAdapter +}; + +utils$1.forEach(knownAdapters, (fn, value) => { + if (fn) { + try { + Object.defineProperty(fn, 'name', {value}); + } catch (e) { + // eslint-disable-next-line no-empty + } + Object.defineProperty(fn, 'adapterName', {value}); + } +}); + +const renderReason = (reason) => `- ${reason}`; + +const isResolvedHandle = (adapter) => utils$1.isFunction(adapter) || adapter === null || adapter === false; + +const adapters = { + getAdapter: (adapters) => { + adapters = utils$1.isArray(adapters) ? adapters : [adapters]; + + const {length} = adapters; + let nameOrAdapter; + let adapter; + + const rejectedReasons = {}; + + for (let i = 0; i < length; i++) { + nameOrAdapter = adapters[i]; + let id; + + adapter = nameOrAdapter; + + if (!isResolvedHandle(nameOrAdapter)) { + adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()]; + + if (adapter === undefined) { + throw new AxiosError(`Unknown adapter '${id}'`); + } + } + + if (adapter) { + break; + } + + rejectedReasons[id || '#' + i] = adapter; + } + + if (!adapter) { + + const reasons = Object.entries(rejectedReasons) + .map(([id, state]) => `adapter ${id} ` + + (state === false ? 'is not supported by the environment' : 'is not available in the build') + ); + + let s = length ? + (reasons.length > 1 ? 'since :\n' + reasons.map(renderReason).join('\n') : ' ' + renderReason(reasons[0])) : + 'as no adapter specified'; + + throw new AxiosError( + `There is no suitable adapter to dispatch the request ` + s, + 'ERR_NOT_SUPPORT' + ); + } + + return adapter; + }, + adapters: knownAdapters +}; + +/** + * Throws a `CanceledError` if cancellation has been requested. + * + * @param {Object} config The config that is to be used for the request + * + * @returns {void} + */ +function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } + + if (config.signal && config.signal.aborted) { + throw new CanceledError(null, config); + } +} + +/** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * + * @returns {Promise} The Promise to be fulfilled + */ +function dispatchRequest(config) { + throwIfCancellationRequested(config); + + config.headers = AxiosHeaders$1.from(config.headers); + + // Transform request data + config.data = transformData.call( + config, + config.transformRequest + ); + + if (['post', 'put', 'patch'].indexOf(config.method) !== -1) { + config.headers.setContentType('application/x-www-form-urlencoded', false); + } + + const adapter = adapters.getAdapter(config.adapter || defaults$1.adapter); + + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData.call( + config, + config.transformResponse, + response + ); + + response.headers = AxiosHeaders$1.from(response.headers); + + return response; + }, function onAdapterRejection(reason) { + if (!isCancel(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData.call( + config, + config.transformResponse, + reason.response + ); + reason.response.headers = AxiosHeaders$1.from(reason.response.headers); + } + } + + return Promise.reject(reason); + }); +} + +const validators$1 = {}; + +// eslint-disable-next-line func-names +['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => { + validators$1[type] = function validator(thing) { + return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type; + }; +}); + +const deprecatedWarnings = {}; + +/** + * Transitional option validator + * + * @param {function|boolean?} validator - set to false if the transitional option has been removed + * @param {string?} version - deprecated version / removed since version + * @param {string?} message - some message with additional info + * + * @returns {function} + */ +validators$1.transitional = function transitional(validator, version, message) { + function formatMessage(opt, desc) { + return '[Axios v' + VERSION + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : ''); + } + + // eslint-disable-next-line func-names + return (value, opt, opts) => { + if (validator === false) { + throw new AxiosError( + formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')), + AxiosError.ERR_DEPRECATED + ); + } + + if (version && !deprecatedWarnings[opt]) { + deprecatedWarnings[opt] = true; + // eslint-disable-next-line no-console + console.warn( + formatMessage( + opt, + ' has been deprecated since v' + version + ' and will be removed in the near future' + ) + ); + } + + return validator ? validator(value, opt, opts) : true; + }; +}; + +validators$1.spelling = function spelling(correctSpelling) { + return (value, opt) => { + // eslint-disable-next-line no-console + console.warn(`${opt} is likely a misspelling of ${correctSpelling}`); + return true; + } +}; + +/** + * Assert object's properties type + * + * @param {object} options + * @param {object} schema + * @param {boolean?} allowUnknown + * + * @returns {object} + */ + +function assertOptions(options, schema, allowUnknown) { + if (typeof options !== 'object') { + throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE); + } + const keys = Object.keys(options); + let i = keys.length; + while (i-- > 0) { + const opt = keys[i]; + const validator = schema[opt]; + if (validator) { + const value = options[opt]; + const result = value === undefined || validator(value, opt, options); + if (result !== true) { + throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE); + } + continue; + } + if (allowUnknown !== true) { + throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION); + } + } +} + +const validator = { + assertOptions, + validators: validators$1 +}; + +const validators = validator.validators; + +/** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + * + * @return {Axios} A new instance of Axios + */ +class Axios { + constructor(instanceConfig) { + this.defaults = instanceConfig || {}; + this.interceptors = { + request: new InterceptorManager$1(), + response: new InterceptorManager$1() + }; + } + + /** + * Dispatch a request + * + * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults) + * @param {?Object} config + * + * @returns {Promise} The Promise to be fulfilled + */ + async request(configOrUrl, config) { + try { + return await this._request(configOrUrl, config); + } catch (err) { + if (err instanceof Error) { + let dummy = {}; + + Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error()); + + // slice off the Error: ... line + const stack = dummy.stack ? dummy.stack.replace(/^.+\n/, '') : ''; + try { + if (!err.stack) { + err.stack = stack; + // match without the 2 top stack lines + } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\n.+\n/, ''))) { + err.stack += '\n' + stack; + } + } catch (e) { + // ignore the case where "stack" is an un-writable property + } + } + + throw err; + } + } + + _request(configOrUrl, config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof configOrUrl === 'string') { + config = config || {}; + config.url = configOrUrl; + } else { + config = configOrUrl || {}; + } + + config = mergeConfig(this.defaults, config); + + const {transitional, paramsSerializer, headers} = config; + + if (transitional !== undefined) { + validator.assertOptions(transitional, { + silentJSONParsing: validators.transitional(validators.boolean), + forcedJSONParsing: validators.transitional(validators.boolean), + clarifyTimeoutError: validators.transitional(validators.boolean) + }, false); + } + + if (paramsSerializer != null) { + if (utils$1.isFunction(paramsSerializer)) { + config.paramsSerializer = { + serialize: paramsSerializer + }; + } else { + validator.assertOptions(paramsSerializer, { + encode: validators.function, + serialize: validators.function + }, true); + } + } + + // Set config.allowAbsoluteUrls + if (config.allowAbsoluteUrls !== undefined) ; else if (this.defaults.allowAbsoluteUrls !== undefined) { + config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls; + } else { + config.allowAbsoluteUrls = true; + } + + validator.assertOptions(config, { + baseUrl: validators.spelling('baseURL'), + withXsrfToken: validators.spelling('withXSRFToken') + }, true); + + // Set config.method + config.method = (config.method || this.defaults.method || 'get').toLowerCase(); + + // Flatten headers + let contextHeaders = headers && utils$1.merge( + headers.common, + headers[config.method] + ); + + headers && utils$1.forEach( + ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], + (method) => { + delete headers[method]; + } + ); + + config.headers = AxiosHeaders$1.concat(contextHeaders, headers); + + // filter out skipped interceptors + const requestInterceptorChain = []; + let synchronousRequestInterceptors = true; + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) { + return; + } + + synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous; + + requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + + const responseInterceptorChain = []; + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected); + }); + + let promise; + let i = 0; + let len; + + if (!synchronousRequestInterceptors) { + const chain = [dispatchRequest.bind(this), undefined]; + chain.unshift.apply(chain, requestInterceptorChain); + chain.push.apply(chain, responseInterceptorChain); + len = chain.length; + + promise = Promise.resolve(config); + + while (i < len) { + promise = promise.then(chain[i++], chain[i++]); + } + + return promise; + } + + len = requestInterceptorChain.length; + + let newConfig = config; + + i = 0; + + while (i < len) { + const onFulfilled = requestInterceptorChain[i++]; + const onRejected = requestInterceptorChain[i++]; + try { + newConfig = onFulfilled(newConfig); + } catch (error) { + onRejected.call(this, error); + break; + } + } + + try { + promise = dispatchRequest.call(this, newConfig); + } catch (error) { + return Promise.reject(error); + } + + i = 0; + len = responseInterceptorChain.length; + + while (i < len) { + promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]); + } + + return promise; + } + + getUri(config) { + config = mergeConfig(this.defaults, config); + const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + return buildURL(fullPath, config.params, config.paramsSerializer); + } +} + +// Provide aliases for supported request methods +utils$1.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, config) { + return this.request(mergeConfig(config || {}, { + method, + url, + data: (config || {}).data + })); + }; +}); + +utils$1.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + + function generateHTTPMethod(isForm) { + return function httpMethod(url, data, config) { + return this.request(mergeConfig(config || {}, { + method, + headers: isForm ? { + 'Content-Type': 'multipart/form-data' + } : {}, + url, + data + })); + }; + } + + Axios.prototype[method] = generateHTTPMethod(); + + Axios.prototype[method + 'Form'] = generateHTTPMethod(true); +}); + +const Axios$1 = Axios; + +/** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @param {Function} executor The executor function. + * + * @returns {CancelToken} + */ +class CancelToken { + constructor(executor) { + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + + let resolvePromise; + + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + + const token = this; + + // eslint-disable-next-line func-names + this.promise.then(cancel => { + if (!token._listeners) return; + + let i = token._listeners.length; + + while (i-- > 0) { + token._listeners[i](cancel); + } + token._listeners = null; + }); + + // eslint-disable-next-line func-names + this.promise.then = onfulfilled => { + let _resolve; + // eslint-disable-next-line func-names + const promise = new Promise(resolve => { + token.subscribe(resolve); + _resolve = resolve; + }).then(onfulfilled); + + promise.cancel = function reject() { + token.unsubscribe(_resolve); + }; + + return promise; + }; + + executor(function cancel(message, config, request) { + if (token.reason) { + // Cancellation has already been requested + return; + } + + token.reason = new CanceledError(message, config, request); + resolvePromise(token.reason); + }); + } + + /** + * Throws a `CanceledError` if cancellation has been requested. + */ + throwIfRequested() { + if (this.reason) { + throw this.reason; + } + } + + /** + * Subscribe to the cancel signal + */ + + subscribe(listener) { + if (this.reason) { + listener(this.reason); + return; + } + + if (this._listeners) { + this._listeners.push(listener); + } else { + this._listeners = [listener]; + } + } + + /** + * Unsubscribe from the cancel signal + */ + + unsubscribe(listener) { + if (!this._listeners) { + return; + } + const index = this._listeners.indexOf(listener); + if (index !== -1) { + this._listeners.splice(index, 1); + } + } + + toAbortSignal() { + const controller = new AbortController(); + + const abort = (err) => { + controller.abort(err); + }; + + this.subscribe(abort); + + controller.signal.unsubscribe = () => this.unsubscribe(abort); + + return controller.signal; + } + + /** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ + static source() { + let cancel; + const token = new CancelToken(function executor(c) { + cancel = c; + }); + return { + token, + cancel + }; + } +} + +const CancelToken$1 = CancelToken; + +/** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * + * @returns {Function} + */ +function spread(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; +} + +/** + * Determines whether the payload is an error thrown by Axios + * + * @param {*} payload The value to test + * + * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false + */ +function isAxiosError(payload) { + return utils$1.isObject(payload) && (payload.isAxiosError === true); +} + +const HttpStatusCode = { + Continue: 100, + SwitchingProtocols: 101, + Processing: 102, + EarlyHints: 103, + Ok: 200, + Created: 201, + Accepted: 202, + NonAuthoritativeInformation: 203, + NoContent: 204, + ResetContent: 205, + PartialContent: 206, + MultiStatus: 207, + AlreadyReported: 208, + ImUsed: 226, + MultipleChoices: 300, + MovedPermanently: 301, + Found: 302, + SeeOther: 303, + NotModified: 304, + UseProxy: 305, + Unused: 306, + TemporaryRedirect: 307, + PermanentRedirect: 308, + BadRequest: 400, + Unauthorized: 401, + PaymentRequired: 402, + Forbidden: 403, + NotFound: 404, + MethodNotAllowed: 405, + NotAcceptable: 406, + ProxyAuthenticationRequired: 407, + RequestTimeout: 408, + Conflict: 409, + Gone: 410, + LengthRequired: 411, + PreconditionFailed: 412, + PayloadTooLarge: 413, + UriTooLong: 414, + UnsupportedMediaType: 415, + RangeNotSatisfiable: 416, + ExpectationFailed: 417, + ImATeapot: 418, + MisdirectedRequest: 421, + UnprocessableEntity: 422, + Locked: 423, + FailedDependency: 424, + TooEarly: 425, + UpgradeRequired: 426, + PreconditionRequired: 428, + TooManyRequests: 429, + RequestHeaderFieldsTooLarge: 431, + UnavailableForLegalReasons: 451, + InternalServerError: 500, + NotImplemented: 501, + BadGateway: 502, + ServiceUnavailable: 503, + GatewayTimeout: 504, + HttpVersionNotSupported: 505, + VariantAlsoNegotiates: 506, + InsufficientStorage: 507, + LoopDetected: 508, + NotExtended: 510, + NetworkAuthenticationRequired: 511, +}; + +Object.entries(HttpStatusCode).forEach(([key, value]) => { + HttpStatusCode[value] = key; +}); + +const HttpStatusCode$1 = HttpStatusCode; + +/** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * + * @returns {Axios} A new instance of Axios + */ +function createInstance(defaultConfig) { + const context = new Axios$1(defaultConfig); + const instance = bind(Axios$1.prototype.request, context); + + // Copy axios.prototype to instance + utils$1.extend(instance, Axios$1.prototype, context, {allOwnKeys: true}); + + // Copy context to instance + utils$1.extend(instance, context, null, {allOwnKeys: true}); + + // Factory for creating new instances + instance.create = function create(instanceConfig) { + return createInstance(mergeConfig(defaultConfig, instanceConfig)); + }; + + return instance; +} + +// Create the default instance to be exported +const axios = createInstance(defaults$1); + +// Expose Axios class to allow class inheritance +axios.Axios = Axios$1; + +// Expose Cancel & CancelToken +axios.CanceledError = CanceledError; +axios.CancelToken = CancelToken$1; +axios.isCancel = isCancel; +axios.VERSION = VERSION; +axios.toFormData = toFormData; + +// Expose AxiosError class +axios.AxiosError = AxiosError; + +// alias for CanceledError for backward compatibility +axios.Cancel = axios.CanceledError; + +// Expose all/spread +axios.all = function all(promises) { + return Promise.all(promises); +}; + +axios.spread = spread; + +// Expose isAxiosError +axios.isAxiosError = isAxiosError; + +// Expose mergeConfig +axios.mergeConfig = mergeConfig; + +axios.AxiosHeaders = AxiosHeaders$1; + +axios.formToJSON = thing => formDataToJSON(utils$1.isHTMLForm(thing) ? new FormData(thing) : thing); + +axios.getAdapter = adapters.getAdapter; + +axios.HttpStatusCode = HttpStatusCode$1; + +axios.default = axios; + +module.exports = axios; +//# sourceMappingURL=axios.cjs.map diff --git a/node_modules/axios/dist/node/axios.cjs.map b/node_modules/axios/dist/node/axios.cjs.map new file mode 100644 index 0000000..2e599ab --- /dev/null +++ b/node_modules/axios/dist/node/axios.cjs.map @@ -0,0 +1 @@ +{"version":3,"file":"axios.cjs","sources":["../../lib/helpers/bind.js","../../lib/utils.js","../../lib/core/AxiosError.js","../../lib/helpers/toFormData.js","../../lib/helpers/AxiosURLSearchParams.js","../../lib/helpers/buildURL.js","../../lib/core/InterceptorManager.js","../../lib/defaults/transitional.js","../../lib/platform/node/classes/URLSearchParams.js","../../lib/platform/node/index.js","../../lib/platform/common/utils.js","../../lib/platform/index.js","../../lib/helpers/toURLEncodedForm.js","../../lib/helpers/formDataToJSON.js","../../lib/defaults/index.js","../../lib/helpers/parseHeaders.js","../../lib/core/AxiosHeaders.js","../../lib/core/transformData.js","../../lib/cancel/isCancel.js","../../lib/cancel/CanceledError.js","../../lib/core/settle.js","../../lib/helpers/isAbsoluteURL.js","../../lib/helpers/combineURLs.js","../../lib/core/buildFullPath.js","../../lib/env/data.js","../../lib/helpers/parseProtocol.js","../../lib/helpers/fromDataURI.js","../../lib/helpers/AxiosTransformStream.js","../../lib/helpers/readBlob.js","../../lib/helpers/formDataToStream.js","../../lib/helpers/ZlibHeaderTransformStream.js","../../lib/helpers/callbackify.js","../../lib/helpers/speedometer.js","../../lib/helpers/throttle.js","../../lib/helpers/progressEventReducer.js","../../lib/adapters/http.js","../../lib/helpers/isURLSameOrigin.js","../../lib/helpers/cookies.js","../../lib/core/mergeConfig.js","../../lib/helpers/resolveConfig.js","../../lib/adapters/xhr.js","../../lib/helpers/composeSignals.js","../../lib/helpers/trackStream.js","../../lib/adapters/fetch.js","../../lib/adapters/adapters.js","../../lib/core/dispatchRequest.js","../../lib/helpers/validator.js","../../lib/core/Axios.js","../../lib/cancel/CancelToken.js","../../lib/helpers/spread.js","../../lib/helpers/isAxiosError.js","../../lib/helpers/HttpStatusCode.js","../../lib/axios.js"],"sourcesContent":["'use strict';\n\nexport default function bind(fn, thisArg) {\n return function wrap() {\n return fn.apply(thisArg, arguments);\n };\n}\n","'use strict';\n\nimport bind from './helpers/bind.js';\n\n// utils is a library of generic helper functions non-specific to axios\n\nconst {toString} = Object.prototype;\nconst {getPrototypeOf} = Object;\nconst {iterator, toStringTag} = Symbol;\n\nconst kindOf = (cache => thing => {\n const str = toString.call(thing);\n return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());\n})(Object.create(null));\n\nconst kindOfTest = (type) => {\n type = type.toLowerCase();\n return (thing) => kindOf(thing) === type\n}\n\nconst typeOfTest = type => thing => typeof thing === type;\n\n/**\n * Determine if a value is an Array\n *\n * @param {Object} val The value to test\n *\n * @returns {boolean} True if value is an Array, otherwise false\n */\nconst {isArray} = Array;\n\n/**\n * Determine if a value is undefined\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) {\n result = ArrayBuffer.isView(val);\n } else {\n result = (val) && (val.buffer) && (isArrayBuffer(val.buffer));\n }\n return result;\n}\n\n/**\n * Determine if a value is a String\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a String, otherwise false\n */\nconst isString = typeOfTest('string');\n\n/**\n * Determine if a value is a Function\n *\n * @param {*} val The value to test\n * @returns {boolean} True if value is a Function, otherwise false\n */\nconst isFunction = typeOfTest('function');\n\n/**\n * Determine if a value is a Number\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Number, otherwise false\n */\nconst isNumber = typeOfTest('number');\n\n/**\n * Determine if a value is an Object\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an Object, otherwise false\n */\nconst isObject = (thing) => thing !== null && typeof thing === 'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\nconst [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest);\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[iterator];\n\n const _iterator = generator.call(obj);\n\n let result;\n\n while ((result = _iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n return value != null && Number.isFinite(value = +value) ? value : defaultValue;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\n// original code\n// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34\n\nconst _setImmediate = ((setImmediateSupported, postMessageSupported) => {\n if (setImmediateSupported) {\n return setImmediate;\n }\n\n return postMessageSupported ? ((token, callbacks) => {\n _global.addEventListener(\"message\", ({source, data}) => {\n if (source === _global && data === token) {\n callbacks.length && callbacks.shift()();\n }\n }, false);\n\n return (cb) => {\n callbacks.push(cb);\n _global.postMessage(token, \"*\");\n }\n })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb);\n})(\n typeof setImmediate === 'function',\n isFunction(_global.postMessage)\n);\n\nconst asap = typeof queueMicrotask !== 'undefined' ?\n queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate);\n\n// *********************\n\n\nconst isIterable = (thing) => thing != null && isFunction(thing[iterator]);\n\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isReadableStream,\n isRequest,\n isResponse,\n isHeaders,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable,\n setImmediate: _setImmediate,\n asap,\n isIterable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n if (response) {\n this.response = response;\n this.status = response.status ? response.status : null;\n }\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.status\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (utils.isBoolean(value)) {\n return value.toString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?(object|Function)} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n if (utils.isFunction(options)) {\n options = {\n serialize: options\n };\n } \n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","'use strict';\n\nimport url from 'url';\nexport default url.URLSearchParams;\n","import crypto from 'crypto';\nimport URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\n\nconst ALPHA = 'abcdefghijklmnopqrstuvwxyz'\n\nconst DIGIT = '0123456789';\n\nconst ALPHABET = {\n DIGIT,\n ALPHA,\n ALPHA_DIGIT: ALPHA + ALPHA.toUpperCase() + DIGIT\n}\n\nconst generateString = (size = 16, alphabet = ALPHABET.ALPHA_DIGIT) => {\n let str = '';\n const {length} = alphabet;\n const randomValues = new Uint32Array(size);\n crypto.randomFillSync(randomValues);\n for (let i = 0; i < size; i++) {\n str += alphabet[randomValues[i] % length];\n }\n\n return str;\n}\n\n\nexport default {\n isNode: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob: typeof Blob !== 'undefined' && Blob || null\n },\n ALPHABET,\n generateString,\n protocols: [ 'http', 'https', 'file', 'data' ]\n};\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\nconst _navigator = typeof navigator === 'object' && navigator || undefined;\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = hasBrowserEnv &&\n (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nconst origin = hasBrowserEnv && window.location.href || 'http://localhost';\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv,\n _navigator as navigator,\n origin\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n\n if (name === '__proto__') return true;\n\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http', 'fetch'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data) ||\n utils.isReadableStream(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (utils.isResponse(data) || utils.isReadableStream(data)) {\n return data;\n }\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else if (utils.isObject(header) && utils.isIterable(header)) {\n let obj = {}, dest, key;\n for (const entry of header) {\n if (!utils.isArray(entry)) {\n throw TypeError('Object iterator must return a key-value pair');\n }\n\n obj[key = entry[0]] = (dest = obj[key]) ?\n (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1];\n }\n\n setHeaders(obj, valueOrRewrite)\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n getSetCookie() {\n return this.get(\"set-cookie\") || [];\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/?\\/$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {\n let isRelativeUrl = !isAbsoluteURL(requestedURL);\n if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","export const VERSION = \"1.10.0\";","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport parseProtocol from './parseProtocol.js';\nimport platform from '../platform/index.js';\n\nconst DATA_URL_PATTERN = /^(?:([^;]+);)?(?:[^;]+;)?(base64|),([\\s\\S]*)$/;\n\n/**\n * Parse data uri to a Buffer or Blob\n *\n * @param {String} uri\n * @param {?Boolean} asBlob\n * @param {?Object} options\n * @param {?Function} options.Blob\n *\n * @returns {Buffer|Blob}\n */\nexport default function fromDataURI(uri, asBlob, options) {\n const _Blob = options && options.Blob || platform.classes.Blob;\n const protocol = parseProtocol(uri);\n\n if (asBlob === undefined && _Blob) {\n asBlob = true;\n }\n\n if (protocol === 'data') {\n uri = protocol.length ? uri.slice(protocol.length + 1) : uri;\n\n const match = DATA_URL_PATTERN.exec(uri);\n\n if (!match) {\n throw new AxiosError('Invalid URL', AxiosError.ERR_INVALID_URL);\n }\n\n const mime = match[1];\n const isBase64 = match[2];\n const body = match[3];\n const buffer = Buffer.from(decodeURIComponent(body), isBase64 ? 'base64' : 'utf8');\n\n if (asBlob) {\n if (!_Blob) {\n throw new AxiosError('Blob is not supported', AxiosError.ERR_NOT_SUPPORT);\n }\n\n return new _Blob([buffer], {type: mime});\n }\n\n return buffer;\n }\n\n throw new AxiosError('Unsupported protocol ' + protocol, AxiosError.ERR_NOT_SUPPORT);\n}\n","'use strict';\n\nimport stream from 'stream';\nimport utils from '../utils.js';\n\nconst kInternals = Symbol('internals');\n\nclass AxiosTransformStream extends stream.Transform{\n constructor(options) {\n options = utils.toFlatObject(options, {\n maxRate: 0,\n chunkSize: 64 * 1024,\n minChunkSize: 100,\n timeWindow: 500,\n ticksRate: 2,\n samplesCount: 15\n }, null, (prop, source) => {\n return !utils.isUndefined(source[prop]);\n });\n\n super({\n readableHighWaterMark: options.chunkSize\n });\n\n const internals = this[kInternals] = {\n timeWindow: options.timeWindow,\n chunkSize: options.chunkSize,\n maxRate: options.maxRate,\n minChunkSize: options.minChunkSize,\n bytesSeen: 0,\n isCaptured: false,\n notifiedBytesLoaded: 0,\n ts: Date.now(),\n bytes: 0,\n onReadCallback: null\n };\n\n this.on('newListener', event => {\n if (event === 'progress') {\n if (!internals.isCaptured) {\n internals.isCaptured = true;\n }\n }\n });\n }\n\n _read(size) {\n const internals = this[kInternals];\n\n if (internals.onReadCallback) {\n internals.onReadCallback();\n }\n\n return super._read(size);\n }\n\n _transform(chunk, encoding, callback) {\n const internals = this[kInternals];\n const maxRate = internals.maxRate;\n\n const readableHighWaterMark = this.readableHighWaterMark;\n\n const timeWindow = internals.timeWindow;\n\n const divider = 1000 / timeWindow;\n const bytesThreshold = (maxRate / divider);\n const minChunkSize = internals.minChunkSize !== false ? Math.max(internals.minChunkSize, bytesThreshold * 0.01) : 0;\n\n const pushChunk = (_chunk, _callback) => {\n const bytes = Buffer.byteLength(_chunk);\n internals.bytesSeen += bytes;\n internals.bytes += bytes;\n\n internals.isCaptured && this.emit('progress', internals.bytesSeen);\n\n if (this.push(_chunk)) {\n process.nextTick(_callback);\n } else {\n internals.onReadCallback = () => {\n internals.onReadCallback = null;\n process.nextTick(_callback);\n };\n }\n }\n\n const transformChunk = (_chunk, _callback) => {\n const chunkSize = Buffer.byteLength(_chunk);\n let chunkRemainder = null;\n let maxChunkSize = readableHighWaterMark;\n let bytesLeft;\n let passed = 0;\n\n if (maxRate) {\n const now = Date.now();\n\n if (!internals.ts || (passed = (now - internals.ts)) >= timeWindow) {\n internals.ts = now;\n bytesLeft = bytesThreshold - internals.bytes;\n internals.bytes = bytesLeft < 0 ? -bytesLeft : 0;\n passed = 0;\n }\n\n bytesLeft = bytesThreshold - internals.bytes;\n }\n\n if (maxRate) {\n if (bytesLeft <= 0) {\n // next time window\n return setTimeout(() => {\n _callback(null, _chunk);\n }, timeWindow - passed);\n }\n\n if (bytesLeft < maxChunkSize) {\n maxChunkSize = bytesLeft;\n }\n }\n\n if (maxChunkSize && chunkSize > maxChunkSize && (chunkSize - maxChunkSize) > minChunkSize) {\n chunkRemainder = _chunk.subarray(maxChunkSize);\n _chunk = _chunk.subarray(0, maxChunkSize);\n }\n\n pushChunk(_chunk, chunkRemainder ? () => {\n process.nextTick(_callback, null, chunkRemainder);\n } : _callback);\n };\n\n transformChunk(chunk, function transformNextChunk(err, _chunk) {\n if (err) {\n return callback(err);\n }\n\n if (_chunk) {\n transformChunk(_chunk, transformNextChunk);\n } else {\n callback(null);\n }\n });\n }\n}\n\nexport default AxiosTransformStream;\n","const {asyncIterator} = Symbol;\n\nconst readBlob = async function* (blob) {\n if (blob.stream) {\n yield* blob.stream()\n } else if (blob.arrayBuffer) {\n yield await blob.arrayBuffer()\n } else if (blob[asyncIterator]) {\n yield* blob[asyncIterator]();\n } else {\n yield blob;\n }\n}\n\nexport default readBlob;\n","import util from 'util';\nimport {Readable} from 'stream';\nimport utils from \"../utils.js\";\nimport readBlob from \"./readBlob.js\";\nimport platform from \"../platform/index.js\";\n\nconst BOUNDARY_ALPHABET = platform.ALPHABET.ALPHA_DIGIT + '-_';\n\nconst textEncoder = typeof TextEncoder === 'function' ? new TextEncoder() : new util.TextEncoder();\n\nconst CRLF = '\\r\\n';\nconst CRLF_BYTES = textEncoder.encode(CRLF);\nconst CRLF_BYTES_COUNT = 2;\n\nclass FormDataPart {\n constructor(name, value) {\n const {escapeName} = this.constructor;\n const isStringValue = utils.isString(value);\n\n let headers = `Content-Disposition: form-data; name=\"${escapeName(name)}\"${\n !isStringValue && value.name ? `; filename=\"${escapeName(value.name)}\"` : ''\n }${CRLF}`;\n\n if (isStringValue) {\n value = textEncoder.encode(String(value).replace(/\\r?\\n|\\r\\n?/g, CRLF));\n } else {\n headers += `Content-Type: ${value.type || \"application/octet-stream\"}${CRLF}`\n }\n\n this.headers = textEncoder.encode(headers + CRLF);\n\n this.contentLength = isStringValue ? value.byteLength : value.size;\n\n this.size = this.headers.byteLength + this.contentLength + CRLF_BYTES_COUNT;\n\n this.name = name;\n this.value = value;\n }\n\n async *encode(){\n yield this.headers;\n\n const {value} = this;\n\n if(utils.isTypedArray(value)) {\n yield value;\n } else {\n yield* readBlob(value);\n }\n\n yield CRLF_BYTES;\n }\n\n static escapeName(name) {\n return String(name).replace(/[\\r\\n\"]/g, (match) => ({\n '\\r' : '%0D',\n '\\n' : '%0A',\n '\"' : '%22',\n }[match]));\n }\n}\n\nconst formDataToStream = (form, headersHandler, options) => {\n const {\n tag = 'form-data-boundary',\n size = 25,\n boundary = tag + '-' + platform.generateString(size, BOUNDARY_ALPHABET)\n } = options || {};\n\n if(!utils.isFormData(form)) {\n throw TypeError('FormData instance required');\n }\n\n if (boundary.length < 1 || boundary.length > 70) {\n throw Error('boundary must be 10-70 characters long')\n }\n\n const boundaryBytes = textEncoder.encode('--' + boundary + CRLF);\n const footerBytes = textEncoder.encode('--' + boundary + '--' + CRLF);\n let contentLength = footerBytes.byteLength;\n\n const parts = Array.from(form.entries()).map(([name, value]) => {\n const part = new FormDataPart(name, value);\n contentLength += part.size;\n return part;\n });\n\n contentLength += boundaryBytes.byteLength * parts.length;\n\n contentLength = utils.toFiniteNumber(contentLength);\n\n const computedHeaders = {\n 'Content-Type': `multipart/form-data; boundary=${boundary}`\n }\n\n if (Number.isFinite(contentLength)) {\n computedHeaders['Content-Length'] = contentLength;\n }\n\n headersHandler && headersHandler(computedHeaders);\n\n return Readable.from((async function *() {\n for(const part of parts) {\n yield boundaryBytes;\n yield* part.encode();\n }\n\n yield footerBytes;\n })());\n};\n\nexport default formDataToStream;\n","\"use strict\";\n\nimport stream from \"stream\";\n\nclass ZlibHeaderTransformStream extends stream.Transform {\n __transform(chunk, encoding, callback) {\n this.push(chunk);\n callback();\n }\n\n _transform(chunk, encoding, callback) {\n if (chunk.length !== 0) {\n this._transform = this.__transform;\n\n // Add Default Compression headers if no zlib headers are present\n if (chunk[0] !== 120) { // Hex: 78\n const header = Buffer.alloc(2);\n header[0] = 120; // Hex: 78\n header[1] = 156; // Hex: 9C \n this.push(header, encoding);\n }\n }\n\n this.__transform(chunk, encoding, callback);\n }\n}\n\nexport default ZlibHeaderTransformStream;\n","import utils from \"../utils.js\";\n\nconst callbackify = (fn, reducer) => {\n return utils.isAsyncFn(fn) ? function (...args) {\n const cb = args.pop();\n fn.apply(this, args).then((value) => {\n try {\n reducer ? cb(null, ...reducer(value)) : cb(null, value);\n } catch (err) {\n cb(err);\n }\n }, cb);\n } : fn;\n}\n\nexport default callbackify;\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","/**\n * Throttle decorator\n * @param {Function} fn\n * @param {Number} freq\n * @return {Function}\n */\nfunction throttle(fn, freq) {\n let timestamp = 0;\n let threshold = 1000 / freq;\n let lastArgs;\n let timer;\n\n const invoke = (args, now = Date.now()) => {\n timestamp = now;\n lastArgs = null;\n if (timer) {\n clearTimeout(timer);\n timer = null;\n }\n fn.apply(null, args);\n }\n\n const throttled = (...args) => {\n const now = Date.now();\n const passed = now - timestamp;\n if ( passed >= threshold) {\n invoke(args, now);\n } else {\n lastArgs = args;\n if (!timer) {\n timer = setTimeout(() => {\n timer = null;\n invoke(lastArgs)\n }, threshold - passed);\n }\n }\n }\n\n const flush = () => lastArgs && invoke(lastArgs);\n\n return [throttled, flush];\n}\n\nexport default throttle;\n","import speedometer from \"./speedometer.js\";\nimport throttle from \"./throttle.js\";\nimport utils from \"../utils.js\";\n\nexport const progressEventReducer = (listener, isDownloadStream, freq = 3) => {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return throttle(e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e,\n lengthComputable: total != null,\n [isDownloadStream ? 'download' : 'upload']: true\n };\n\n listener(data);\n }, freq);\n}\n\nexport const progressEventDecorator = (total, throttled) => {\n const lengthComputable = total != null;\n\n return [(loaded) => throttled[0]({\n lengthComputable,\n total,\n loaded\n }), throttled[1]];\n}\n\nexport const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args));\n","'use strict';\n\nimport utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport buildFullPath from '../core/buildFullPath.js';\nimport buildURL from './../helpers/buildURL.js';\nimport proxyFromEnv from 'proxy-from-env';\nimport http from 'http';\nimport https from 'https';\nimport util from 'util';\nimport followRedirects from 'follow-redirects';\nimport zlib from 'zlib';\nimport {VERSION} from '../env/data.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport platform from '../platform/index.js';\nimport fromDataURI from '../helpers/fromDataURI.js';\nimport stream from 'stream';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport AxiosTransformStream from '../helpers/AxiosTransformStream.js';\nimport {EventEmitter} from 'events';\nimport formDataToStream from \"../helpers/formDataToStream.js\";\nimport readBlob from \"../helpers/readBlob.js\";\nimport ZlibHeaderTransformStream from '../helpers/ZlibHeaderTransformStream.js';\nimport callbackify from \"../helpers/callbackify.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\n\nconst zlibOptions = {\n flush: zlib.constants.Z_SYNC_FLUSH,\n finishFlush: zlib.constants.Z_SYNC_FLUSH\n};\n\nconst brotliOptions = {\n flush: zlib.constants.BROTLI_OPERATION_FLUSH,\n finishFlush: zlib.constants.BROTLI_OPERATION_FLUSH\n}\n\nconst isBrotliSupported = utils.isFunction(zlib.createBrotliDecompress);\n\nconst {http: httpFollow, https: httpsFollow} = followRedirects;\n\nconst isHttps = /https:?/;\n\nconst supportedProtocols = platform.protocols.map(protocol => {\n return protocol + ':';\n});\n\nconst flushOnFinish = (stream, [throttled, flush]) => {\n stream\n .on('end', flush)\n .on('error', flush);\n\n return throttled;\n}\n\n/**\n * If the proxy or config beforeRedirects functions are defined, call them with the options\n * object.\n *\n * @param {Object} options - The options object that was passed to the request.\n *\n * @returns {Object}\n */\nfunction dispatchBeforeRedirect(options, responseDetails) {\n if (options.beforeRedirects.proxy) {\n options.beforeRedirects.proxy(options);\n }\n if (options.beforeRedirects.config) {\n options.beforeRedirects.config(options, responseDetails);\n }\n}\n\n/**\n * If the proxy or config afterRedirects functions are defined, call them with the options\n *\n * @param {http.ClientRequestArgs} options\n * @param {AxiosProxyConfig} configProxy configuration from Axios options object\n * @param {string} location\n *\n * @returns {http.ClientRequestArgs}\n */\nfunction setProxy(options, configProxy, location) {\n let proxy = configProxy;\n if (!proxy && proxy !== false) {\n const proxyUrl = proxyFromEnv.getProxyForUrl(location);\n if (proxyUrl) {\n proxy = new URL(proxyUrl);\n }\n }\n if (proxy) {\n // Basic proxy authorization\n if (proxy.username) {\n proxy.auth = (proxy.username || '') + ':' + (proxy.password || '');\n }\n\n if (proxy.auth) {\n // Support proxy auth object form\n if (proxy.auth.username || proxy.auth.password) {\n proxy.auth = (proxy.auth.username || '') + ':' + (proxy.auth.password || '');\n }\n const base64 = Buffer\n .from(proxy.auth, 'utf8')\n .toString('base64');\n options.headers['Proxy-Authorization'] = 'Basic ' + base64;\n }\n\n options.headers.host = options.hostname + (options.port ? ':' + options.port : '');\n const proxyHost = proxy.hostname || proxy.host;\n options.hostname = proxyHost;\n // Replace 'host' since options is not a URL object\n options.host = proxyHost;\n options.port = proxy.port;\n options.path = location;\n if (proxy.protocol) {\n options.protocol = proxy.protocol.includes(':') ? proxy.protocol : `${proxy.protocol}:`;\n }\n }\n\n options.beforeRedirects.proxy = function beforeRedirect(redirectOptions) {\n // Configure proxy for redirected request, passing the original config proxy to apply\n // the exact same logic as if the redirected request was performed by axios directly.\n setProxy(redirectOptions, configProxy, redirectOptions.href);\n };\n}\n\nconst isHttpAdapterSupported = typeof process !== 'undefined' && utils.kindOf(process) === 'process';\n\n// temporary hotfix\n\nconst wrapAsync = (asyncExecutor) => {\n return new Promise((resolve, reject) => {\n let onDone;\n let isDone;\n\n const done = (value, isRejected) => {\n if (isDone) return;\n isDone = true;\n onDone && onDone(value, isRejected);\n }\n\n const _resolve = (value) => {\n done(value);\n resolve(value);\n };\n\n const _reject = (reason) => {\n done(reason, true);\n reject(reason);\n }\n\n asyncExecutor(_resolve, _reject, (onDoneHandler) => (onDone = onDoneHandler)).catch(_reject);\n })\n};\n\nconst resolveFamily = ({address, family}) => {\n if (!utils.isString(address)) {\n throw TypeError('address must be a string');\n }\n return ({\n address,\n family: family || (address.indexOf('.') < 0 ? 6 : 4)\n });\n}\n\nconst buildAddressEntry = (address, family) => resolveFamily(utils.isObject(address) ? address : {address, family});\n\n/*eslint consistent-return:0*/\nexport default isHttpAdapterSupported && function httpAdapter(config) {\n return wrapAsync(async function dispatchHttpRequest(resolve, reject, onDone) {\n let {data, lookup, family} = config;\n const {responseType, responseEncoding} = config;\n const method = config.method.toUpperCase();\n let isDone;\n let rejected = false;\n let req;\n\n if (lookup) {\n const _lookup = callbackify(lookup, (value) => utils.isArray(value) ? value : [value]);\n // hotfix to support opt.all option which is required for node 20.x\n lookup = (hostname, opt, cb) => {\n _lookup(hostname, opt, (err, arg0, arg1) => {\n if (err) {\n return cb(err);\n }\n\n const addresses = utils.isArray(arg0) ? arg0.map(addr => buildAddressEntry(addr)) : [buildAddressEntry(arg0, arg1)];\n\n opt.all ? cb(err, addresses) : cb(err, addresses[0].address, addresses[0].family);\n });\n }\n }\n\n // temporary internal emitter until the AxiosRequest class will be implemented\n const emitter = new EventEmitter();\n\n const onFinished = () => {\n if (config.cancelToken) {\n config.cancelToken.unsubscribe(abort);\n }\n\n if (config.signal) {\n config.signal.removeEventListener('abort', abort);\n }\n\n emitter.removeAllListeners();\n }\n\n onDone((value, isRejected) => {\n isDone = true;\n if (isRejected) {\n rejected = true;\n onFinished();\n }\n });\n\n function abort(reason) {\n emitter.emit('abort', !reason || reason.type ? new CanceledError(null, config, req) : reason);\n }\n\n emitter.once('abort', reject);\n\n if (config.cancelToken || config.signal) {\n config.cancelToken && config.cancelToken.subscribe(abort);\n if (config.signal) {\n config.signal.aborted ? abort() : config.signal.addEventListener('abort', abort);\n }\n }\n\n // Parse url\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n const parsed = new URL(fullPath, platform.hasBrowserEnv ? platform.origin : undefined);\n const protocol = parsed.protocol || supportedProtocols[0];\n\n if (protocol === 'data:') {\n let convertedData;\n\n if (method !== 'GET') {\n return settle(resolve, reject, {\n status: 405,\n statusText: 'method not allowed',\n headers: {},\n config\n });\n }\n\n try {\n convertedData = fromDataURI(config.url, responseType === 'blob', {\n Blob: config.env && config.env.Blob\n });\n } catch (err) {\n throw AxiosError.from(err, AxiosError.ERR_BAD_REQUEST, config);\n }\n\n if (responseType === 'text') {\n convertedData = convertedData.toString(responseEncoding);\n\n if (!responseEncoding || responseEncoding === 'utf8') {\n convertedData = utils.stripBOM(convertedData);\n }\n } else if (responseType === 'stream') {\n convertedData = stream.Readable.from(convertedData);\n }\n\n return settle(resolve, reject, {\n data: convertedData,\n status: 200,\n statusText: 'OK',\n headers: new AxiosHeaders(),\n config\n });\n }\n\n if (supportedProtocols.indexOf(protocol) === -1) {\n return reject(new AxiosError(\n 'Unsupported protocol ' + protocol,\n AxiosError.ERR_BAD_REQUEST,\n config\n ));\n }\n\n const headers = AxiosHeaders.from(config.headers).normalize();\n\n // Set User-Agent (required by some servers)\n // See https://github.com/axios/axios/issues/69\n // User-Agent is specified; handle case where no UA header is desired\n // Only set header if it hasn't been set in config\n headers.set('User-Agent', 'axios/' + VERSION, false);\n\n const {onUploadProgress, onDownloadProgress} = config;\n const maxRate = config.maxRate;\n let maxUploadRate = undefined;\n let maxDownloadRate = undefined;\n\n // support for spec compliant FormData objects\n if (utils.isSpecCompliantForm(data)) {\n const userBoundary = headers.getContentType(/boundary=([-_\\w\\d]{10,70})/i);\n\n data = formDataToStream(data, (formHeaders) => {\n headers.set(formHeaders);\n }, {\n tag: `axios-${VERSION}-boundary`,\n boundary: userBoundary && userBoundary[1] || undefined\n });\n // support for https://www.npmjs.com/package/form-data api\n } else if (utils.isFormData(data) && utils.isFunction(data.getHeaders)) {\n headers.set(data.getHeaders());\n\n if (!headers.hasContentLength()) {\n try {\n const knownLength = await util.promisify(data.getLength).call(data);\n Number.isFinite(knownLength) && knownLength >= 0 && headers.setContentLength(knownLength);\n /*eslint no-empty:0*/\n } catch (e) {\n }\n }\n } else if (utils.isBlob(data) || utils.isFile(data)) {\n data.size && headers.setContentType(data.type || 'application/octet-stream');\n headers.setContentLength(data.size || 0);\n data = stream.Readable.from(readBlob(data));\n } else if (data && !utils.isStream(data)) {\n if (Buffer.isBuffer(data)) {\n // Nothing to do...\n } else if (utils.isArrayBuffer(data)) {\n data = Buffer.from(new Uint8Array(data));\n } else if (utils.isString(data)) {\n data = Buffer.from(data, 'utf-8');\n } else {\n return reject(new AxiosError(\n 'Data after transformation must be a string, an ArrayBuffer, a Buffer, or a Stream',\n AxiosError.ERR_BAD_REQUEST,\n config\n ));\n }\n\n // Add Content-Length header if data exists\n headers.setContentLength(data.length, false);\n\n if (config.maxBodyLength > -1 && data.length > config.maxBodyLength) {\n return reject(new AxiosError(\n 'Request body larger than maxBodyLength limit',\n AxiosError.ERR_BAD_REQUEST,\n config\n ));\n }\n }\n\n const contentLength = utils.toFiniteNumber(headers.getContentLength());\n\n if (utils.isArray(maxRate)) {\n maxUploadRate = maxRate[0];\n maxDownloadRate = maxRate[1];\n } else {\n maxUploadRate = maxDownloadRate = maxRate;\n }\n\n if (data && (onUploadProgress || maxUploadRate)) {\n if (!utils.isStream(data)) {\n data = stream.Readable.from(data, {objectMode: false});\n }\n\n data = stream.pipeline([data, new AxiosTransformStream({\n maxRate: utils.toFiniteNumber(maxUploadRate)\n })], utils.noop);\n\n onUploadProgress && data.on('progress', flushOnFinish(\n data,\n progressEventDecorator(\n contentLength,\n progressEventReducer(asyncDecorator(onUploadProgress), false, 3)\n )\n ));\n }\n\n // HTTP basic authentication\n let auth = undefined;\n if (config.auth) {\n const username = config.auth.username || '';\n const password = config.auth.password || '';\n auth = username + ':' + password;\n }\n\n if (!auth && parsed.username) {\n const urlUsername = parsed.username;\n const urlPassword = parsed.password;\n auth = urlUsername + ':' + urlPassword;\n }\n\n auth && headers.delete('authorization');\n\n let path;\n\n try {\n path = buildURL(\n parsed.pathname + parsed.search,\n config.params,\n config.paramsSerializer\n ).replace(/^\\?/, '');\n } catch (err) {\n const customErr = new Error(err.message);\n customErr.config = config;\n customErr.url = config.url;\n customErr.exists = true;\n return reject(customErr);\n }\n\n headers.set(\n 'Accept-Encoding',\n 'gzip, compress, deflate' + (isBrotliSupported ? ', br' : ''), false\n );\n\n const options = {\n path,\n method: method,\n headers: headers.toJSON(),\n agents: { http: config.httpAgent, https: config.httpsAgent },\n auth,\n protocol,\n family,\n beforeRedirect: dispatchBeforeRedirect,\n beforeRedirects: {}\n };\n\n // cacheable-lookup integration hotfix\n !utils.isUndefined(lookup) && (options.lookup = lookup);\n\n if (config.socketPath) {\n options.socketPath = config.socketPath;\n } else {\n options.hostname = parsed.hostname.startsWith(\"[\") ? parsed.hostname.slice(1, -1) : parsed.hostname;\n options.port = parsed.port;\n setProxy(options, config.proxy, protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path);\n }\n\n let transport;\n const isHttpsRequest = isHttps.test(options.protocol);\n options.agent = isHttpsRequest ? config.httpsAgent : config.httpAgent;\n if (config.transport) {\n transport = config.transport;\n } else if (config.maxRedirects === 0) {\n transport = isHttpsRequest ? https : http;\n } else {\n if (config.maxRedirects) {\n options.maxRedirects = config.maxRedirects;\n }\n if (config.beforeRedirect) {\n options.beforeRedirects.config = config.beforeRedirect;\n }\n transport = isHttpsRequest ? httpsFollow : httpFollow;\n }\n\n if (config.maxBodyLength > -1) {\n options.maxBodyLength = config.maxBodyLength;\n } else {\n // follow-redirects does not skip comparison, so it should always succeed for axios -1 unlimited\n options.maxBodyLength = Infinity;\n }\n\n if (config.insecureHTTPParser) {\n options.insecureHTTPParser = config.insecureHTTPParser;\n }\n\n // Create the request\n req = transport.request(options, function handleResponse(res) {\n if (req.destroyed) return;\n\n const streams = [res];\n\n const responseLength = +res.headers['content-length'];\n\n if (onDownloadProgress || maxDownloadRate) {\n const transformStream = new AxiosTransformStream({\n maxRate: utils.toFiniteNumber(maxDownloadRate)\n });\n\n onDownloadProgress && transformStream.on('progress', flushOnFinish(\n transformStream,\n progressEventDecorator(\n responseLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true, 3)\n )\n ));\n\n streams.push(transformStream);\n }\n\n // decompress the response body transparently if required\n let responseStream = res;\n\n // return the last request in case of redirects\n const lastRequest = res.req || req;\n\n // if decompress disabled we should not decompress\n if (config.decompress !== false && res.headers['content-encoding']) {\n // if no content, but headers still say that it is encoded,\n // remove the header not confuse downstream operations\n if (method === 'HEAD' || res.statusCode === 204) {\n delete res.headers['content-encoding'];\n }\n\n switch ((res.headers['content-encoding'] || '').toLowerCase()) {\n /*eslint default-case:0*/\n case 'gzip':\n case 'x-gzip':\n case 'compress':\n case 'x-compress':\n // add the unzipper to the body stream processing pipeline\n streams.push(zlib.createUnzip(zlibOptions));\n\n // remove the content-encoding in order to not confuse downstream operations\n delete res.headers['content-encoding'];\n break;\n case 'deflate':\n streams.push(new ZlibHeaderTransformStream());\n\n // add the unzipper to the body stream processing pipeline\n streams.push(zlib.createUnzip(zlibOptions));\n\n // remove the content-encoding in order to not confuse downstream operations\n delete res.headers['content-encoding'];\n break;\n case 'br':\n if (isBrotliSupported) {\n streams.push(zlib.createBrotliDecompress(brotliOptions));\n delete res.headers['content-encoding'];\n }\n }\n }\n\n responseStream = streams.length > 1 ? stream.pipeline(streams, utils.noop) : streams[0];\n\n const offListeners = stream.finished(responseStream, () => {\n offListeners();\n onFinished();\n });\n\n const response = {\n status: res.statusCode,\n statusText: res.statusMessage,\n headers: new AxiosHeaders(res.headers),\n config,\n request: lastRequest\n };\n\n if (responseType === 'stream') {\n response.data = responseStream;\n settle(resolve, reject, response);\n } else {\n const responseBuffer = [];\n let totalResponseBytes = 0;\n\n responseStream.on('data', function handleStreamData(chunk) {\n responseBuffer.push(chunk);\n totalResponseBytes += chunk.length;\n\n // make sure the content length is not over the maxContentLength if specified\n if (config.maxContentLength > -1 && totalResponseBytes > config.maxContentLength) {\n // stream.destroy() emit aborted event before calling reject() on Node.js v16\n rejected = true;\n responseStream.destroy();\n reject(new AxiosError('maxContentLength size of ' + config.maxContentLength + ' exceeded',\n AxiosError.ERR_BAD_RESPONSE, config, lastRequest));\n }\n });\n\n responseStream.on('aborted', function handlerStreamAborted() {\n if (rejected) {\n return;\n }\n\n const err = new AxiosError(\n 'stream has been aborted',\n AxiosError.ERR_BAD_RESPONSE,\n config,\n lastRequest\n );\n responseStream.destroy(err);\n reject(err);\n });\n\n responseStream.on('error', function handleStreamError(err) {\n if (req.destroyed) return;\n reject(AxiosError.from(err, null, config, lastRequest));\n });\n\n responseStream.on('end', function handleStreamEnd() {\n try {\n let responseData = responseBuffer.length === 1 ? responseBuffer[0] : Buffer.concat(responseBuffer);\n if (responseType !== 'arraybuffer') {\n responseData = responseData.toString(responseEncoding);\n if (!responseEncoding || responseEncoding === 'utf8') {\n responseData = utils.stripBOM(responseData);\n }\n }\n response.data = responseData;\n } catch (err) {\n return reject(AxiosError.from(err, null, config, response.request, response));\n }\n settle(resolve, reject, response);\n });\n }\n\n emitter.once('abort', err => {\n if (!responseStream.destroyed) {\n responseStream.emit('error', err);\n responseStream.destroy();\n }\n });\n });\n\n emitter.once('abort', err => {\n reject(err);\n req.destroy(err);\n });\n\n // Handle errors\n req.on('error', function handleRequestError(err) {\n // @todo remove\n // if (req.aborted && err.code !== AxiosError.ERR_FR_TOO_MANY_REDIRECTS) return;\n reject(AxiosError.from(err, null, config, req));\n });\n\n // set tcp keep alive to prevent drop connection by peer\n req.on('socket', function handleRequestSocket(socket) {\n // default interval of sending ack packet is 1 minute\n socket.setKeepAlive(true, 1000 * 60);\n });\n\n // Handle request timeout\n if (config.timeout) {\n // This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types.\n const timeout = parseInt(config.timeout, 10);\n\n if (Number.isNaN(timeout)) {\n reject(new AxiosError(\n 'error trying to parse `config.timeout` to int',\n AxiosError.ERR_BAD_OPTION_VALUE,\n config,\n req\n ));\n\n return;\n }\n\n // Sometime, the response will be very slow, and does not respond, the connect event will be block by event loop system.\n // And timer callback will be fired, and abort() will be invoked before connection, then get \"socket hang up\" and code ECONNRESET.\n // At this time, if we have a large number of request, nodejs will hang up some socket on background. and the number will up and up.\n // And then these socket which be hang up will devouring CPU little by little.\n // ClientRequest.setTimeout will be fired on the specify milliseconds, and can make sure that abort() will be fired after connect.\n req.setTimeout(timeout, function handleRequestTimeout() {\n if (isDone) return;\n let timeoutErrorMessage = config.timeout ? 'timeout of ' + config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = config.transitional || transitionalDefaults;\n if (config.timeoutErrorMessage) {\n timeoutErrorMessage = config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n req\n ));\n abort();\n });\n }\n\n\n // Send the request\n if (utils.isStream(data)) {\n let ended = false;\n let errored = false;\n\n data.on('end', () => {\n ended = true;\n });\n\n data.once('error', err => {\n errored = true;\n req.destroy(err);\n });\n\n data.on('close', () => {\n if (!ended && !errored) {\n abort(new CanceledError('Request stream has been aborted', config, req));\n }\n });\n\n data.pipe(req);\n } else {\n req.end(data);\n }\n });\n}\n\nexport const __setProxy = setProxy;\n","import platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => {\n url = new URL(url, platform.origin);\n\n return (\n origin.protocol === url.protocol &&\n origin.host === url.host &&\n (isMSIE || origin.port === url.port)\n );\n})(\n new URL(platform.origin),\n platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)\n) : () => true;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, prop, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, prop , caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, prop , caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, prop , caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport isURLSameOrigin from \"./isURLSameOrigin.js\";\nimport cookies from \"./cookies.js\";\nimport buildFullPath from \"../core/buildFullPath.js\";\nimport mergeConfig from \"../core/mergeConfig.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport buildURL from \"./buildURL.js\";\n\nexport default (config) => {\n const newConfig = mergeConfig({}, config);\n\n let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;\n\n newConfig.headers = headers = AxiosHeaders.from(headers);\n\n newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer);\n\n // HTTP basic authentication\n if (auth) {\n headers.set('Authorization', 'Basic ' +\n btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))\n );\n }\n\n let contentType;\n\n if (utils.isFormData(data)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n headers.setContentType(undefined); // Let the browser set it\n } else if ((contentType = headers.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n\n if (platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {\n // Add xsrf header\n const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);\n\n if (xsrfValue) {\n headers.set(xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n return newConfig;\n}\n\n","import utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport {progressEventReducer} from '../helpers/progressEventReducer.js';\nimport resolveConfig from \"../helpers/resolveConfig.js\";\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n const _config = resolveConfig(config);\n let requestData = _config.data;\n const requestHeaders = AxiosHeaders.from(_config.headers).normalize();\n let {responseType, onUploadProgress, onDownloadProgress} = _config;\n let onCanceled;\n let uploadThrottled, downloadThrottled;\n let flushUpload, flushDownload;\n\n function done() {\n flushUpload && flushUpload(); // flush events\n flushDownload && flushDownload(); // flush events\n\n _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled);\n\n _config.signal && _config.signal.removeEventListener('abort', onCanceled);\n }\n\n let request = new XMLHttpRequest();\n\n request.open(_config.method.toUpperCase(), _config.url, true);\n\n // Set the request timeout in MS\n request.timeout = _config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = _config.transitional || transitionalDefaults;\n if (_config.timeoutErrorMessage) {\n timeoutErrorMessage = _config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(_config.withCredentials)) {\n request.withCredentials = !!_config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = _config.responseType;\n }\n\n // Handle progress if needed\n if (onDownloadProgress) {\n ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true));\n request.addEventListener('progress', downloadThrottled);\n }\n\n // Not all browsers support upload events\n if (onUploadProgress && request.upload) {\n ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress));\n\n request.upload.addEventListener('progress', uploadThrottled);\n\n request.upload.addEventListener('loadend', flushUpload);\n }\n\n if (_config.cancelToken || _config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n _config.cancelToken && _config.cancelToken.subscribe(onCanceled);\n if (_config.signal) {\n _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(_config.url);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","import CanceledError from \"../cancel/CanceledError.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport utils from '../utils.js';\n\nconst composeSignals = (signals, timeout) => {\n const {length} = (signals = signals ? signals.filter(Boolean) : []);\n\n if (timeout || length) {\n let controller = new AbortController();\n\n let aborted;\n\n const onabort = function (reason) {\n if (!aborted) {\n aborted = true;\n unsubscribe();\n const err = reason instanceof Error ? reason : this.reason;\n controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));\n }\n }\n\n let timer = timeout && setTimeout(() => {\n timer = null;\n onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))\n }, timeout)\n\n const unsubscribe = () => {\n if (signals) {\n timer && clearTimeout(timer);\n timer = null;\n signals.forEach(signal => {\n signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort);\n });\n signals = null;\n }\n }\n\n signals.forEach((signal) => signal.addEventListener('abort', onabort));\n\n const {signal} = controller;\n\n signal.unsubscribe = () => utils.asap(unsubscribe);\n\n return signal;\n }\n}\n\nexport default composeSignals;\n","\nexport const streamChunk = function* (chunk, chunkSize) {\n let len = chunk.byteLength;\n\n if (!chunkSize || len < chunkSize) {\n yield chunk;\n return;\n }\n\n let pos = 0;\n let end;\n\n while (pos < len) {\n end = pos + chunkSize;\n yield chunk.slice(pos, end);\n pos = end;\n }\n}\n\nexport const readBytes = async function* (iterable, chunkSize) {\n for await (const chunk of readStream(iterable)) {\n yield* streamChunk(chunk, chunkSize);\n }\n}\n\nconst readStream = async function* (stream) {\n if (stream[Symbol.asyncIterator]) {\n yield* stream;\n return;\n }\n\n const reader = stream.getReader();\n try {\n for (;;) {\n const {done, value} = await reader.read();\n if (done) {\n break;\n }\n yield value;\n }\n } finally {\n await reader.cancel();\n }\n}\n\nexport const trackStream = (stream, chunkSize, onProgress, onFinish) => {\n const iterator = readBytes(stream, chunkSize);\n\n let bytes = 0;\n let done;\n let _onFinish = (e) => {\n if (!done) {\n done = true;\n onFinish && onFinish(e);\n }\n }\n\n return new ReadableStream({\n async pull(controller) {\n try {\n const {done, value} = await iterator.next();\n\n if (done) {\n _onFinish();\n controller.close();\n return;\n }\n\n let len = value.byteLength;\n if (onProgress) {\n let loadedBytes = bytes += len;\n onProgress(loadedBytes);\n }\n controller.enqueue(new Uint8Array(value));\n } catch (err) {\n _onFinish(err);\n throw err;\n }\n },\n cancel(reason) {\n _onFinish(reason);\n return iterator.return();\n }\n }, {\n highWaterMark: 2\n })\n}\n","import platform from \"../platform/index.js\";\nimport utils from \"../utils.js\";\nimport AxiosError from \"../core/AxiosError.js\";\nimport composeSignals from \"../helpers/composeSignals.js\";\nimport {trackStream} from \"../helpers/trackStream.js\";\nimport AxiosHeaders from \"../core/AxiosHeaders.js\";\nimport {progressEventReducer, progressEventDecorator, asyncDecorator} from \"../helpers/progressEventReducer.js\";\nimport resolveConfig from \"../helpers/resolveConfig.js\";\nimport settle from \"../core/settle.js\";\n\nconst isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function';\nconst isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function';\n\n// used only inside the fetch adapter\nconst encodeText = isFetchSupported && (typeof TextEncoder === 'function' ?\n ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) :\n async (str) => new Uint8Array(await new Response(str).arrayBuffer())\n);\n\nconst test = (fn, ...args) => {\n try {\n return !!fn(...args);\n } catch (e) {\n return false\n }\n}\n\nconst supportsRequestStream = isReadableStreamSupported && test(() => {\n let duplexAccessed = false;\n\n const hasContentType = new Request(platform.origin, {\n body: new ReadableStream(),\n method: 'POST',\n get duplex() {\n duplexAccessed = true;\n return 'half';\n },\n }).headers.has('Content-Type');\n\n return duplexAccessed && !hasContentType;\n});\n\nconst DEFAULT_CHUNK_SIZE = 64 * 1024;\n\nconst supportsResponseStream = isReadableStreamSupported &&\n test(() => utils.isReadableStream(new Response('').body));\n\n\nconst resolvers = {\n stream: supportsResponseStream && ((res) => res.body)\n};\n\nisFetchSupported && (((res) => {\n ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => {\n !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() :\n (_, config) => {\n throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config);\n })\n });\n})(new Response));\n\nconst getBodyLength = async (body) => {\n if (body == null) {\n return 0;\n }\n\n if(utils.isBlob(body)) {\n return body.size;\n }\n\n if(utils.isSpecCompliantForm(body)) {\n const _request = new Request(platform.origin, {\n method: 'POST',\n body,\n });\n return (await _request.arrayBuffer()).byteLength;\n }\n\n if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) {\n return body.byteLength;\n }\n\n if(utils.isURLSearchParams(body)) {\n body = body + '';\n }\n\n if(utils.isString(body)) {\n return (await encodeText(body)).byteLength;\n }\n}\n\nconst resolveBodyLength = async (headers, body) => {\n const length = utils.toFiniteNumber(headers.getContentLength());\n\n return length == null ? getBodyLength(body) : length;\n}\n\nexport default isFetchSupported && (async (config) => {\n let {\n url,\n method,\n data,\n signal,\n cancelToken,\n timeout,\n onDownloadProgress,\n onUploadProgress,\n responseType,\n headers,\n withCredentials = 'same-origin',\n fetchOptions\n } = resolveConfig(config);\n\n responseType = responseType ? (responseType + '').toLowerCase() : 'text';\n\n let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout);\n\n let request;\n\n const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => {\n composedSignal.unsubscribe();\n });\n\n let requestContentLength;\n\n try {\n if (\n onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' &&\n (requestContentLength = await resolveBodyLength(headers, data)) !== 0\n ) {\n let _request = new Request(url, {\n method: 'POST',\n body: data,\n duplex: \"half\"\n });\n\n let contentTypeHeader;\n\n if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) {\n headers.setContentType(contentTypeHeader)\n }\n\n if (_request.body) {\n const [onProgress, flush] = progressEventDecorator(\n requestContentLength,\n progressEventReducer(asyncDecorator(onUploadProgress))\n );\n\n data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush);\n }\n }\n\n if (!utils.isString(withCredentials)) {\n withCredentials = withCredentials ? 'include' : 'omit';\n }\n\n // Cloudflare Workers throws when credentials are defined\n // see https://github.com/cloudflare/workerd/issues/902\n const isCredentialsSupported = \"credentials\" in Request.prototype;\n request = new Request(url, {\n ...fetchOptions,\n signal: composedSignal,\n method: method.toUpperCase(),\n headers: headers.normalize().toJSON(),\n body: data,\n duplex: \"half\",\n credentials: isCredentialsSupported ? withCredentials : undefined\n });\n\n let response = await fetch(request, fetchOptions);\n\n const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response');\n\n if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) {\n const options = {};\n\n ['status', 'statusText', 'headers'].forEach(prop => {\n options[prop] = response[prop];\n });\n\n const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length'));\n\n const [onProgress, flush] = onDownloadProgress && progressEventDecorator(\n responseContentLength,\n progressEventReducer(asyncDecorator(onDownloadProgress), true)\n ) || [];\n\n response = new Response(\n trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => {\n flush && flush();\n unsubscribe && unsubscribe();\n }),\n options\n );\n }\n\n responseType = responseType || 'text';\n\n let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config);\n\n !isStreamResponse && unsubscribe && unsubscribe();\n\n return await new Promise((resolve, reject) => {\n settle(resolve, reject, {\n data: responseData,\n headers: AxiosHeaders.from(response.headers),\n status: response.status,\n statusText: response.statusText,\n config,\n request\n })\n })\n } catch (err) {\n unsubscribe && unsubscribe();\n\n if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) {\n throw Object.assign(\n new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request),\n {\n cause: err.cause || err\n }\n )\n }\n\n throw AxiosError.from(err, err && err.code, config, request);\n }\n});\n\n\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport fetchAdapter from './fetch.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter,\n fetch: fetchAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\nvalidators.spelling = function spelling(correctSpelling) {\n return (value, opt) => {\n // eslint-disable-next-line no-console\n console.warn(`${opt} is likely a misspelling of ${correctSpelling}`);\n return true;\n }\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig || {};\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n async request(configOrUrl, config) {\n try {\n return await this._request(configOrUrl, config);\n } catch (err) {\n if (err instanceof Error) {\n let dummy = {};\n\n Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error());\n\n // slice off the Error: ... line\n const stack = dummy.stack ? dummy.stack.replace(/^.+\\n/, '') : '';\n try {\n if (!err.stack) {\n err.stack = stack;\n // match without the 2 top stack lines\n } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\\n.+\\n/, ''))) {\n err.stack += '\\n' + stack\n }\n } catch (e) {\n // ignore the case where \"stack\" is an un-writable property\n }\n }\n\n throw err;\n }\n }\n\n _request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.allowAbsoluteUrls\n if (config.allowAbsoluteUrls !== undefined) {\n // do nothing\n } else if (this.defaults.allowAbsoluteUrls !== undefined) {\n config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls;\n } else {\n config.allowAbsoluteUrls = true;\n }\n\n validator.assertOptions(config, {\n baseUrl: validators.spelling('baseURL'),\n withXsrfToken: validators.spelling('withXSRFToken')\n }, true);\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n toAbortSignal() {\n const controller = new AbortController();\n\n const abort = (err) => {\n controller.abort(err);\n };\n\n this.subscribe(abort);\n\n controller.signal.unsubscribe = () => this.unsubscribe(abort);\n\n return controller.signal;\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","'use strict';\n\n/**\n * Syntactic sugar for invoking a function and expanding an array for arguments.\n *\n * Common use case would be to use `Function.prototype.apply`.\n *\n * ```js\n * function f(x, y, z) {}\n * var args = [1, 2, 3];\n * f.apply(null, args);\n * ```\n *\n * With `spread` this example can be re-written.\n *\n * ```js\n * spread(function(x, y, z) {})([1, 2, 3]);\n * ```\n *\n * @param {Function} callback\n *\n * @returns {Function}\n */\nexport default function spread(callback) {\n return function wrap(arr) {\n return callback.apply(null, arr);\n };\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n/**\n * Determines whether the payload is an error thrown by Axios\n *\n * @param {*} payload The value to test\n *\n * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false\n */\nexport default function isAxiosError(payload) {\n return utils.isObject(payload) && (payload.isAxiosError === true);\n}\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n ResetContent: 205,\n PartialContent: 206,\n MultiStatus: 207,\n AlreadyReported: 208,\n ImUsed: 226,\n MultipleChoices: 300,\n MovedPermanently: 301,\n Found: 302,\n SeeOther: 303,\n NotModified: 304,\n UseProxy: 305,\n Unused: 306,\n TemporaryRedirect: 307,\n PermanentRedirect: 308,\n BadRequest: 400,\n Unauthorized: 401,\n PaymentRequired: 402,\n Forbidden: 403,\n NotFound: 404,\n MethodNotAllowed: 405,\n NotAcceptable: 406,\n ProxyAuthenticationRequired: 407,\n RequestTimeout: 408,\n Conflict: 409,\n Gone: 410,\n LengthRequired: 411,\n PreconditionFailed: 412,\n PayloadTooLarge: 413,\n UriTooLong: 414,\n UnsupportedMediaType: 415,\n RangeNotSatisfiable: 416,\n ExpectationFailed: 417,\n ImATeapot: 418,\n MisdirectedRequest: 421,\n UnprocessableEntity: 422,\n Locked: 423,\n FailedDependency: 424,\n TooEarly: 425,\n UpgradeRequired: 426,\n PreconditionRequired: 428,\n TooManyRequests: 429,\n RequestHeaderFieldsTooLarge: 431,\n UnavailableForLegalReasons: 451,\n InternalServerError: 500,\n NotImplemented: 501,\n BadGateway: 502,\n ServiceUnavailable: 503,\n GatewayTimeout: 504,\n HttpVersionNotSupported: 505,\n VariantAlsoNegotiates: 506,\n InsufficientStorage: 507,\n LoopDetected: 508,\n NotExtended: 510,\n NetworkAuthenticationRequired: 511,\n};\n\nObject.entries(HttpStatusCode).forEach(([key, value]) => {\n HttpStatusCode[value] = key;\n});\n\nexport default HttpStatusCode;\n","'use strict';\n\nimport utils from './utils.js';\nimport bind from './helpers/bind.js';\nimport Axios from './core/Axios.js';\nimport mergeConfig from './core/mergeConfig.js';\nimport defaults from './defaults/index.js';\nimport formDataToJSON from './helpers/formDataToJSON.js';\nimport CanceledError from './cancel/CanceledError.js';\nimport CancelToken from './cancel/CancelToken.js';\nimport isCancel from './cancel/isCancel.js';\nimport {VERSION} from './env/data.js';\nimport toFormData from './helpers/toFormData.js';\nimport AxiosError from './core/AxiosError.js';\nimport spread from './helpers/spread.js';\nimport isAxiosError from './helpers/isAxiosError.js';\nimport AxiosHeaders from \"./core/AxiosHeaders.js\";\nimport adapters from './adapters/adapters.js';\nimport HttpStatusCode from './helpers/HttpStatusCode.js';\n\n/**\n * Create an instance of Axios\n *\n * @param {Object} defaultConfig The default config for the instance\n *\n * @returns {Axios} A new instance of Axios\n */\nfunction createInstance(defaultConfig) {\n const context = new Axios(defaultConfig);\n const instance = bind(Axios.prototype.request, context);\n\n // Copy axios.prototype to instance\n utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});\n\n // Copy context to instance\n utils.extend(instance, context, null, {allOwnKeys: true});\n\n // Factory for creating new instances\n instance.create = function create(instanceConfig) {\n return createInstance(mergeConfig(defaultConfig, instanceConfig));\n };\n\n return instance;\n}\n\n// Create the default instance to be exported\nconst axios = createInstance(defaults);\n\n// Expose Axios class to allow class inheritance\naxios.Axios = Axios;\n\n// Expose Cancel & CancelToken\naxios.CanceledError = CanceledError;\naxios.CancelToken = CancelToken;\naxios.isCancel = isCancel;\naxios.VERSION = VERSION;\naxios.toFormData = toFormData;\n\n// Expose AxiosError class\naxios.AxiosError = AxiosError;\n\n// alias for CanceledError for backward compatibility\naxios.Cancel = axios.CanceledError;\n\n// Expose all/spread\naxios.all = function all(promises) {\n return Promise.all(promises);\n};\n\naxios.spread = spread;\n\n// Expose isAxiosError\naxios.isAxiosError = isAxiosError;\n\n// Expose mergeConfig\naxios.mergeConfig = mergeConfig;\n\naxios.AxiosHeaders = AxiosHeaders;\n\naxios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);\n\naxios.getAdapter = adapters.getAdapter;\n\naxios.HttpStatusCode = HttpStatusCode;\n\naxios.default = axios;\n\n// this module should only 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\ No newline at end of file diff --git a/node_modules/axios/index.d.cts b/node_modules/axios/index.d.cts new file mode 100644 index 0000000..eeca543 --- /dev/null +++ b/node_modules/axios/index.d.cts @@ -0,0 +1,550 @@ +interface RawAxiosHeaders { + [key: string]: axios.AxiosHeaderValue; +} + +type MethodsHeaders = Partial<{ + [Key in axios.Method as Lowercase]: AxiosHeaders; +} & {common: AxiosHeaders}>; + +type AxiosHeaderMatcher = (this: AxiosHeaders, value: string, name: string, headers: RawAxiosHeaders) => boolean; + +type AxiosHeaderParser = (this: AxiosHeaders, value: axios.AxiosHeaderValue, header: string) => any; + +type CommonRequestHeadersList = 'Accept' | 'Content-Length' | 'User-Agent'| 'Content-Encoding' | 'Authorization'; + +type ContentType = axios.AxiosHeaderValue | 'text/html' | 'text/plain' | 'multipart/form-data' | 'application/json' | 'application/x-www-form-urlencoded' | 'application/octet-stream'; + +type CommonResponseHeadersList = 'Server' | 'Content-Type' | 'Content-Length' | 'Cache-Control'| 'Content-Encoding'; + +declare class AxiosHeaders { + constructor( + headers?: RawAxiosHeaders | AxiosHeaders | string + ); + + [key: string]: any; + + set(headerName?: string, value?: axios.AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + set(headers?: RawAxiosHeaders | AxiosHeaders | string, rewrite?: boolean): AxiosHeaders; + + get(headerName: string, parser: RegExp): RegExpExecArray | null; + get(headerName: string, matcher?: true | AxiosHeaderParser): axios.AxiosHeaderValue; + + has(header: string, matcher?: AxiosHeaderMatcher): boolean; + + delete(header: string | string[], matcher?: AxiosHeaderMatcher): boolean; + + clear(matcher?: AxiosHeaderMatcher): boolean; + + normalize(format: boolean): AxiosHeaders; + + concat(...targets: Array): AxiosHeaders; + + toJSON(asStrings?: boolean): RawAxiosHeaders; + + static from(thing?: AxiosHeaders | RawAxiosHeaders | string): AxiosHeaders; + + static accessor(header: string | string[]): AxiosHeaders; + + static concat(...targets: Array): AxiosHeaders; + + setContentType(value: ContentType, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getContentType(parser?: RegExp): RegExpExecArray | null; + getContentType(matcher?: AxiosHeaderMatcher): axios.AxiosHeaderValue; + hasContentType(matcher?: AxiosHeaderMatcher): boolean; + + setContentLength(value: axios.AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getContentLength(parser?: RegExp): RegExpExecArray | null; + getContentLength(matcher?: AxiosHeaderMatcher): axios.AxiosHeaderValue; + hasContentLength(matcher?: AxiosHeaderMatcher): boolean; + + setAccept(value: axios.AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getAccept(parser?: RegExp): RegExpExecArray | null; + getAccept(matcher?: AxiosHeaderMatcher): axios.AxiosHeaderValue; + hasAccept(matcher?: AxiosHeaderMatcher): boolean; + + setUserAgent(value: axios.AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getUserAgent(parser?: RegExp): RegExpExecArray | null; + getUserAgent(matcher?: AxiosHeaderMatcher): axios.AxiosHeaderValue; + hasUserAgent(matcher?: AxiosHeaderMatcher): boolean; + + setContentEncoding(value: axios.AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getContentEncoding(parser?: RegExp): RegExpExecArray | null; + getContentEncoding(matcher?: AxiosHeaderMatcher): axios.AxiosHeaderValue; + hasContentEncoding(matcher?: AxiosHeaderMatcher): boolean; + + setAuthorization(value: axios.AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getAuthorization(parser?: RegExp): RegExpExecArray | null; + getAuthorization(matcher?: AxiosHeaderMatcher): axios.AxiosHeaderValue; + hasAuthorization(matcher?: AxiosHeaderMatcher): boolean; + + [Symbol.iterator](): IterableIterator<[string, axios.AxiosHeaderValue]>; +} + +declare class AxiosError extends Error { + constructor( + message?: string, + code?: string, + config?: axios.InternalAxiosRequestConfig, + request?: any, + response?: axios.AxiosResponse + ); + + config?: axios.InternalAxiosRequestConfig; + code?: string; + request?: any; + response?: axios.AxiosResponse; + isAxiosError: boolean; + status?: number; + toJSON: () => object; + cause?: Error; + static readonly ERR_FR_TOO_MANY_REDIRECTS = "ERR_FR_TOO_MANY_REDIRECTS"; + static readonly ERR_BAD_OPTION_VALUE = "ERR_BAD_OPTION_VALUE"; + static readonly ERR_BAD_OPTION = "ERR_BAD_OPTION"; + static readonly ERR_NETWORK = "ERR_NETWORK"; + static readonly ERR_DEPRECATED = "ERR_DEPRECATED"; + static readonly ERR_BAD_RESPONSE = "ERR_BAD_RESPONSE"; + static readonly ERR_BAD_REQUEST = "ERR_BAD_REQUEST"; + static readonly ERR_NOT_SUPPORT = "ERR_NOT_SUPPORT"; + static readonly ERR_INVALID_URL = "ERR_INVALID_URL"; + static readonly ERR_CANCELED = "ERR_CANCELED"; + static readonly ECONNABORTED = "ECONNABORTED"; + static readonly ETIMEDOUT = "ETIMEDOUT"; +} + +declare class CanceledError extends AxiosError { +} + +declare class Axios { + constructor(config?: axios.AxiosRequestConfig); + defaults: axios.AxiosDefaults; + interceptors: { + request: axios.AxiosInterceptorManager; + response: axios.AxiosInterceptorManager; + }; + getUri(config?: axios.AxiosRequestConfig): string; + request, D = any>(config: axios.AxiosRequestConfig): Promise; + get, D = any>(url: string, config?: axios.AxiosRequestConfig): Promise; + delete, D = any>(url: string, config?: axios.AxiosRequestConfig): Promise; + head, D = any>(url: string, config?: axios.AxiosRequestConfig): Promise; + options, D = any>(url: string, config?: axios.AxiosRequestConfig): Promise; + post, D = any>(url: string, data?: D, config?: axios.AxiosRequestConfig): Promise; + put, D = any>(url: string, data?: D, config?: axios.AxiosRequestConfig): Promise; + patch, D = any>(url: string, data?: D, config?: axios.AxiosRequestConfig): Promise; + postForm, D = any>(url: string, data?: D, config?: axios.AxiosRequestConfig): Promise; + putForm, D = any>(url: string, data?: D, config?: axios.AxiosRequestConfig): Promise; + patchForm, D = any>(url: string, data?: D, config?: axios.AxiosRequestConfig): Promise; +} + +declare enum HttpStatusCode { + Continue = 100, + SwitchingProtocols = 101, + Processing = 102, + EarlyHints = 103, + Ok = 200, + Created = 201, + Accepted = 202, + NonAuthoritativeInformation = 203, + NoContent = 204, + ResetContent = 205, + PartialContent = 206, + MultiStatus = 207, + AlreadyReported = 208, + ImUsed = 226, + MultipleChoices = 300, + MovedPermanently = 301, + Found = 302, + SeeOther = 303, + NotModified = 304, + UseProxy = 305, + Unused = 306, + TemporaryRedirect = 307, + PermanentRedirect = 308, + BadRequest = 400, + Unauthorized = 401, + PaymentRequired = 402, + Forbidden = 403, + NotFound = 404, + MethodNotAllowed = 405, + NotAcceptable = 406, + ProxyAuthenticationRequired = 407, + RequestTimeout = 408, + Conflict = 409, + Gone = 410, + LengthRequired = 411, + PreconditionFailed = 412, + PayloadTooLarge = 413, + UriTooLong = 414, + UnsupportedMediaType = 415, + RangeNotSatisfiable = 416, + ExpectationFailed = 417, + ImATeapot = 418, + MisdirectedRequest = 421, + UnprocessableEntity = 422, + Locked = 423, + FailedDependency = 424, + TooEarly = 425, + UpgradeRequired = 426, + PreconditionRequired = 428, + TooManyRequests = 429, + RequestHeaderFieldsTooLarge = 431, + UnavailableForLegalReasons = 451, + InternalServerError = 500, + NotImplemented = 501, + BadGateway = 502, + ServiceUnavailable = 503, + GatewayTimeout = 504, + HttpVersionNotSupported = 505, + VariantAlsoNegotiates = 506, + InsufficientStorage = 507, + LoopDetected = 508, + NotExtended = 510, + NetworkAuthenticationRequired = 511, +} + +type InternalAxiosError = AxiosError; + +declare namespace axios { + type AxiosError = InternalAxiosError; + + type RawAxiosRequestHeaders = Partial; + + type AxiosRequestHeaders = RawAxiosRequestHeaders & AxiosHeaders; + + type AxiosHeaderValue = AxiosHeaders | string | string[] | number | boolean | null; + + type RawCommonResponseHeaders = { + [Key in CommonResponseHeadersList]: AxiosHeaderValue; + } & { + "set-cookie": string[]; + }; + + type RawAxiosResponseHeaders = Partial; + + type AxiosResponseHeaders = RawAxiosResponseHeaders & AxiosHeaders; + + interface AxiosRequestTransformer { + (this: InternalAxiosRequestConfig, data: any, headers: AxiosRequestHeaders): any; + } + + interface AxiosResponseTransformer { + (this: InternalAxiosRequestConfig, data: any, headers: AxiosResponseHeaders, status?: number): any; + } + + interface AxiosAdapter { + (config: InternalAxiosRequestConfig): AxiosPromise; + } + + interface AxiosBasicCredentials { + username: string; + password: string; + } + + interface AxiosProxyConfig { + host: string; + port: number; + auth?: AxiosBasicCredentials; + protocol?: string; + } + + type Method = + | 'get' | 'GET' + | 'delete' | 'DELETE' + | 'head' | 'HEAD' + | 'options' | 'OPTIONS' + | 'post' | 'POST' + | 'put' | 'PUT' + | 'patch' | 'PATCH' + | 'purge' | 'PURGE' + | 'link' | 'LINK' + | 'unlink' | 'UNLINK'; + + type ResponseType = + | 'arraybuffer' + | 'blob' + | 'document' + | 'json' + | 'text' + | 'stream' + | 'formdata'; + + type responseEncoding = + | 'ascii' | 'ASCII' + | 'ansi' | 'ANSI' + | 'binary' | 'BINARY' + | 'base64' | 'BASE64' + | 'base64url' | 'BASE64URL' + | 'hex' | 'HEX' + | 'latin1' | 'LATIN1' + | 'ucs-2' | 'UCS-2' + | 'ucs2' | 'UCS2' + | 'utf-8' | 'UTF-8' + | 'utf8' | 'UTF8' + | 'utf16le' | 'UTF16LE'; + + interface TransitionalOptions { + silentJSONParsing?: boolean; + forcedJSONParsing?: boolean; + clarifyTimeoutError?: boolean; + } + + interface GenericAbortSignal { + readonly aborted: boolean; + onabort?: ((...args: any) => any) | null; + addEventListener?: (...args: any) => any; + removeEventListener?: (...args: any) => any; + } + + interface FormDataVisitorHelpers { + defaultVisitor: SerializerVisitor; + convertValue: (value: any) => any; + isVisitable: (value: any) => boolean; + } + + interface SerializerVisitor { + ( + this: GenericFormData, + value: any, + key: string | number, + path: null | Array, + helpers: FormDataVisitorHelpers + ): boolean; + } + + interface SerializerOptions { + visitor?: SerializerVisitor; + dots?: boolean; + metaTokens?: boolean; + indexes?: boolean | null; + } + + // tslint:disable-next-line + interface FormSerializerOptions extends SerializerOptions { + } + + interface ParamEncoder { + (value: any, defaultEncoder: (value: any) => any): any; + } + + interface CustomParamsSerializer { + (params: Record, options?: ParamsSerializerOptions): string; + } + + interface ParamsSerializerOptions extends SerializerOptions { + encode?: ParamEncoder; + serialize?: CustomParamsSerializer; + } + + type MaxUploadRate = number; + + type MaxDownloadRate = number; + + type BrowserProgressEvent = any; + + interface AxiosProgressEvent { + loaded: number; + total?: number; + progress?: number; + bytes: number; + rate?: number; + estimated?: number; + upload?: boolean; + download?: boolean; + event?: BrowserProgressEvent; + lengthComputable: boolean; + } + + type Milliseconds = number; + + type AxiosAdapterName = 'fetch' | 'xhr' | 'http' | (string & {}); + + type AxiosAdapterConfig = AxiosAdapter | AxiosAdapterName; + + type AddressFamily = 4 | 6 | undefined; + + interface LookupAddressEntry { + address: string; + family?: AddressFamily; + } + + type LookupAddress = string | LookupAddressEntry; + + interface AxiosRequestConfig { + url?: string; + method?: Method | string; + baseURL?: string; + allowAbsoluteUrls?: boolean; + transformRequest?: AxiosRequestTransformer | AxiosRequestTransformer[]; + transformResponse?: AxiosResponseTransformer | AxiosResponseTransformer[]; + headers?: (RawAxiosRequestHeaders & MethodsHeaders) | AxiosHeaders; + params?: any; + paramsSerializer?: ParamsSerializerOptions | CustomParamsSerializer; + data?: D; + timeout?: Milliseconds; + timeoutErrorMessage?: string; + withCredentials?: boolean; + adapter?: AxiosAdapterConfig | AxiosAdapterConfig[]; + auth?: AxiosBasicCredentials; + responseType?: ResponseType; + responseEncoding?: responseEncoding | string; + xsrfCookieName?: string; + xsrfHeaderName?: string; + onUploadProgress?: (progressEvent: AxiosProgressEvent) => void; + onDownloadProgress?: (progressEvent: AxiosProgressEvent) => void; + maxContentLength?: number; + validateStatus?: ((status: number) => boolean) | null; + maxBodyLength?: number; + maxRedirects?: number; + maxRate?: number | [MaxUploadRate, MaxDownloadRate]; + beforeRedirect?: (options: Record, responseDetails: {headers: Record, statusCode: HttpStatusCode}) => void; + socketPath?: string | null; + transport?: any; + httpAgent?: any; + httpsAgent?: any; + proxy?: AxiosProxyConfig | false; + cancelToken?: CancelToken; + decompress?: boolean; + transitional?: TransitionalOptions; + signal?: GenericAbortSignal; + insecureHTTPParser?: boolean; + env?: { + FormData?: new (...args: any[]) => object; + }; + formSerializer?: FormSerializerOptions; + family?: AddressFamily; + lookup?: ((hostname: string, options: object, cb: (err: Error | null, address: LookupAddress | LookupAddress[], family?: AddressFamily) => void) => void) | + ((hostname: string, options: object) => Promise<[address: LookupAddressEntry | LookupAddressEntry[], family?: AddressFamily] | LookupAddress>); + withXSRFToken?: boolean | ((config: InternalAxiosRequestConfig) => boolean | undefined); + fetchOptions?: Omit | Record; + } + + // Alias + type RawAxiosRequestConfig = AxiosRequestConfig; + + interface InternalAxiosRequestConfig extends AxiosRequestConfig { + headers: AxiosRequestHeaders; + } + + interface HeadersDefaults { + common: RawAxiosRequestHeaders; + delete: RawAxiosRequestHeaders; + get: RawAxiosRequestHeaders; + head: RawAxiosRequestHeaders; + post: RawAxiosRequestHeaders; + put: RawAxiosRequestHeaders; + patch: RawAxiosRequestHeaders; + options?: RawAxiosRequestHeaders; + purge?: RawAxiosRequestHeaders; + link?: RawAxiosRequestHeaders; + unlink?: RawAxiosRequestHeaders; + } + + interface AxiosDefaults extends Omit, 'headers'> { + headers: HeadersDefaults; + } + + interface CreateAxiosDefaults extends Omit, 'headers'> { + headers?: RawAxiosRequestHeaders | AxiosHeaders | Partial; + } + + interface AxiosResponse { + data: T; + status: number; + statusText: string; + headers: RawAxiosResponseHeaders | AxiosResponseHeaders; + config: InternalAxiosRequestConfig; + request?: any; + } + + type AxiosPromise = Promise>; + + interface CancelStatic { + new (message?: string): Cancel; + } + + interface Cancel { + message: string | undefined; + } + + interface Canceler { + (message?: string, config?: AxiosRequestConfig, request?: any): void; + } + + interface CancelTokenStatic { + new (executor: (cancel: Canceler) => void): CancelToken; + source(): CancelTokenSource; + } + + interface CancelToken { + promise: Promise; + reason?: Cancel; + throwIfRequested(): void; + } + + interface CancelTokenSource { + token: CancelToken; + cancel: Canceler; + } + + interface AxiosInterceptorOptions { + synchronous?: boolean; + runWhen?: (config: InternalAxiosRequestConfig) => boolean; + } + + type AxiosRequestInterceptorUse = (onFulfilled?: ((value: T) => T | Promise) | null, onRejected?: ((error: any) => any) | null, options?: AxiosInterceptorOptions) => number; + + type AxiosResponseInterceptorUse = (onFulfilled?: ((value: T) => T | Promise) | null, onRejected?: ((error: any) => any) | null) => number; + + interface AxiosInterceptorManager { + use: V extends AxiosResponse ? AxiosResponseInterceptorUse : AxiosRequestInterceptorUse; + eject(id: number): void; + clear(): void; + } + + interface AxiosInstance extends Axios { + , D = any>(config: AxiosRequestConfig): Promise; + , D = any>(url: string, config?: AxiosRequestConfig): Promise; + + create(config?: CreateAxiosDefaults): AxiosInstance; + defaults: Omit & { + headers: HeadersDefaults & { + [key: string]: AxiosHeaderValue + } + }; + } + + interface GenericFormData { + append(name: string, value: any, options?: any): any; + } + + interface GenericHTMLFormElement { + name: string; + method: string; + submit(): void; + } + + interface AxiosStatic extends AxiosInstance { + Cancel: CancelStatic; + CancelToken: CancelTokenStatic; + Axios: typeof Axios; + AxiosError: typeof AxiosError; + CanceledError: typeof CanceledError; + HttpStatusCode: typeof HttpStatusCode; + readonly VERSION: string; + isCancel(value: any): value is Cancel; + all(values: Array>): Promise; + spread(callback: (...args: T[]) => R): (array: T[]) => R; + isAxiosError(payload: any): payload is AxiosError; + toFormData(sourceObj: object, targetFormData?: GenericFormData, options?: FormSerializerOptions): GenericFormData; + formToJSON(form: GenericFormData|GenericHTMLFormElement): object; + getAdapter(adapters: AxiosAdapterConfig | AxiosAdapterConfig[] | undefined): AxiosAdapter; + AxiosHeaders: typeof AxiosHeaders; + } +} + +declare const axios: axios.AxiosStatic; + +export = axios; diff --git a/node_modules/axios/index.d.ts b/node_modules/axios/index.d.ts new file mode 100644 index 0000000..d4d661f --- /dev/null +++ b/node_modules/axios/index.d.ts @@ -0,0 +1,572 @@ +// TypeScript Version: 4.7 +export type AxiosHeaderValue = AxiosHeaders | string | string[] | number | boolean | null; + +interface RawAxiosHeaders { + [key: string]: AxiosHeaderValue; +} + +type MethodsHeaders = Partial<{ + [Key in Method as Lowercase]: AxiosHeaders; +} & {common: AxiosHeaders}>; + +type AxiosHeaderMatcher = string | RegExp | ((this: AxiosHeaders, value: string, name: string) => boolean); + +type AxiosHeaderParser = (this: AxiosHeaders, value: AxiosHeaderValue, header: string) => any; + +export class AxiosHeaders { + constructor( + headers?: RawAxiosHeaders | AxiosHeaders | string + ); + + [key: string]: any; + + set(headerName?: string, value?: AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + set(headers?: RawAxiosHeaders | AxiosHeaders | string, rewrite?: boolean): AxiosHeaders; + + get(headerName: string, parser: RegExp): RegExpExecArray | null; + get(headerName: string, matcher?: true | AxiosHeaderParser): AxiosHeaderValue; + + has(header: string, matcher?: AxiosHeaderMatcher): boolean; + + delete(header: string | string[], matcher?: AxiosHeaderMatcher): boolean; + + clear(matcher?: AxiosHeaderMatcher): boolean; + + normalize(format: boolean): AxiosHeaders; + + concat(...targets: Array): AxiosHeaders; + + toJSON(asStrings?: boolean): RawAxiosHeaders; + + static from(thing?: AxiosHeaders | RawAxiosHeaders | string): AxiosHeaders; + + static accessor(header: string | string[]): AxiosHeaders; + + static concat(...targets: Array): AxiosHeaders; + + setContentType(value: ContentType, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getContentType(parser?: RegExp): RegExpExecArray | null; + getContentType(matcher?: AxiosHeaderMatcher): AxiosHeaderValue; + hasContentType(matcher?: AxiosHeaderMatcher): boolean; + + setContentLength(value: AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getContentLength(parser?: RegExp): RegExpExecArray | null; + getContentLength(matcher?: AxiosHeaderMatcher): AxiosHeaderValue; + hasContentLength(matcher?: AxiosHeaderMatcher): boolean; + + setAccept(value: AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getAccept(parser?: RegExp): RegExpExecArray | null; + getAccept(matcher?: AxiosHeaderMatcher): AxiosHeaderValue; + hasAccept(matcher?: AxiosHeaderMatcher): boolean; + + setUserAgent(value: AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getUserAgent(parser?: RegExp): RegExpExecArray | null; + getUserAgent(matcher?: AxiosHeaderMatcher): AxiosHeaderValue; + hasUserAgent(matcher?: AxiosHeaderMatcher): boolean; + + setContentEncoding(value: AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getContentEncoding(parser?: RegExp): RegExpExecArray | null; + getContentEncoding(matcher?: AxiosHeaderMatcher): AxiosHeaderValue; + hasContentEncoding(matcher?: AxiosHeaderMatcher): boolean; + + setAuthorization(value: AxiosHeaderValue, rewrite?: boolean | AxiosHeaderMatcher): AxiosHeaders; + getAuthorization(parser?: RegExp): RegExpExecArray | null; + getAuthorization(matcher?: AxiosHeaderMatcher): AxiosHeaderValue; + hasAuthorization(matcher?: AxiosHeaderMatcher): boolean; + + getSetCookie(): string[]; + + [Symbol.iterator](): IterableIterator<[string, AxiosHeaderValue]>; +} + +type CommonRequestHeadersList = 'Accept' | 'Content-Length' | 'User-Agent' | 'Content-Encoding' | 'Authorization'; + +type ContentType = AxiosHeaderValue | 'text/html' | 'text/plain' | 'multipart/form-data' | 'application/json' | 'application/x-www-form-urlencoded' | 'application/octet-stream'; + +export type RawAxiosRequestHeaders = Partial; + +export type AxiosRequestHeaders = RawAxiosRequestHeaders & AxiosHeaders; + +type CommonResponseHeadersList = 'Server' | 'Content-Type' | 'Content-Length' | 'Cache-Control'| 'Content-Encoding'; + +type RawCommonResponseHeaders = { + [Key in CommonResponseHeadersList]: AxiosHeaderValue; +} & { + "set-cookie": string[]; +}; + +export type RawAxiosResponseHeaders = Partial; + +export type AxiosResponseHeaders = RawAxiosResponseHeaders & AxiosHeaders; + +export interface AxiosRequestTransformer { + (this: InternalAxiosRequestConfig, data: any, headers: AxiosRequestHeaders): any; +} + +export interface AxiosResponseTransformer { + (this: InternalAxiosRequestConfig, data: any, headers: AxiosResponseHeaders, status?: number): any; +} + +export interface AxiosAdapter { + (config: InternalAxiosRequestConfig): AxiosPromise; +} + +export interface AxiosBasicCredentials { + username: string; + password: string; +} + +export interface AxiosProxyConfig { + host: string; + port: number; + auth?: AxiosBasicCredentials; + protocol?: string; +} + +export enum HttpStatusCode { + Continue = 100, + SwitchingProtocols = 101, + Processing = 102, + EarlyHints = 103, + Ok = 200, + Created = 201, + Accepted = 202, + NonAuthoritativeInformation = 203, + NoContent = 204, + ResetContent = 205, + PartialContent = 206, + MultiStatus = 207, + AlreadyReported = 208, + ImUsed = 226, + MultipleChoices = 300, + MovedPermanently = 301, + Found = 302, + SeeOther = 303, + NotModified = 304, + UseProxy = 305, + Unused = 306, + TemporaryRedirect = 307, + PermanentRedirect = 308, + BadRequest = 400, + Unauthorized = 401, + PaymentRequired = 402, + Forbidden = 403, + NotFound = 404, + MethodNotAllowed = 405, + NotAcceptable = 406, + ProxyAuthenticationRequired = 407, + RequestTimeout = 408, + Conflict = 409, + Gone = 410, + LengthRequired = 411, + PreconditionFailed = 412, + PayloadTooLarge = 413, + UriTooLong = 414, + UnsupportedMediaType = 415, + RangeNotSatisfiable = 416, + ExpectationFailed = 417, + ImATeapot = 418, + MisdirectedRequest = 421, + UnprocessableEntity = 422, + Locked = 423, + FailedDependency = 424, + TooEarly = 425, + UpgradeRequired = 426, + PreconditionRequired = 428, + TooManyRequests = 429, + RequestHeaderFieldsTooLarge = 431, + UnavailableForLegalReasons = 451, + InternalServerError = 500, + NotImplemented = 501, + BadGateway = 502, + ServiceUnavailable = 503, + GatewayTimeout = 504, + HttpVersionNotSupported = 505, + VariantAlsoNegotiates = 506, + InsufficientStorage = 507, + LoopDetected = 508, + NotExtended = 510, + NetworkAuthenticationRequired = 511, +} + +export type Method = + | 'get' | 'GET' + | 'delete' | 'DELETE' + | 'head' | 'HEAD' + | 'options' | 'OPTIONS' + | 'post' | 'POST' + | 'put' | 'PUT' + | 'patch' | 'PATCH' + | 'purge' | 'PURGE' + | 'link' | 'LINK' + | 'unlink' | 'UNLINK'; + +export type ResponseType = + | 'arraybuffer' + | 'blob' + | 'document' + | 'json' + | 'text' + | 'stream' + | 'formdata'; + +export type responseEncoding = + | 'ascii' | 'ASCII' + | 'ansi' | 'ANSI' + | 'binary' | 'BINARY' + | 'base64' | 'BASE64' + | 'base64url' | 'BASE64URL' + | 'hex' | 'HEX' + | 'latin1' | 'LATIN1' + | 'ucs-2' | 'UCS-2' + | 'ucs2' | 'UCS2' + | 'utf-8' | 'UTF-8' + | 'utf8' | 'UTF8' + | 'utf16le' | 'UTF16LE'; + +export interface TransitionalOptions { + silentJSONParsing?: boolean; + forcedJSONParsing?: boolean; + clarifyTimeoutError?: boolean; +} + +export interface GenericAbortSignal { + readonly aborted: boolean; + onabort?: ((...args: any) => any) | null; + addEventListener?: (...args: any) => any; + removeEventListener?: (...args: any) => any; +} + +export interface FormDataVisitorHelpers { + defaultVisitor: SerializerVisitor; + convertValue: (value: any) => any; + isVisitable: (value: any) => boolean; +} + +export interface SerializerVisitor { + ( + this: GenericFormData, + value: any, + key: string | number, + path: null | Array, + helpers: FormDataVisitorHelpers + ): boolean; +} + +export interface SerializerOptions { + visitor?: SerializerVisitor; + dots?: boolean; + metaTokens?: boolean; + indexes?: boolean | null; +} + +// tslint:disable-next-line +export interface FormSerializerOptions extends SerializerOptions { +} + +export interface ParamEncoder { + (value: any, defaultEncoder: (value: any) => any): any; +} + +export interface CustomParamsSerializer { + (params: Record, options?: ParamsSerializerOptions): string; +} + +export interface ParamsSerializerOptions extends SerializerOptions { + encode?: ParamEncoder; + serialize?: CustomParamsSerializer; +} + +type MaxUploadRate = number; + +type MaxDownloadRate = number; + +type BrowserProgressEvent = any; + +export interface AxiosProgressEvent { + loaded: number; + total?: number; + progress?: number; + bytes: number; + rate?: number; + estimated?: number; + upload?: boolean; + download?: boolean; + event?: BrowserProgressEvent; + lengthComputable: boolean; +} + +type Milliseconds = number; + +type AxiosAdapterName = 'fetch' | 'xhr' | 'http' | (string & {}); + +type AxiosAdapterConfig = AxiosAdapter | AxiosAdapterName; + +export type AddressFamily = 4 | 6 | undefined; + +export interface LookupAddressEntry { + address: string; + family?: AddressFamily; +} + +export type LookupAddress = string | LookupAddressEntry; + +export interface AxiosRequestConfig { + url?: string; + method?: Method | string; + baseURL?: string; + allowAbsoluteUrls?: boolean; + transformRequest?: AxiosRequestTransformer | AxiosRequestTransformer[]; + transformResponse?: AxiosResponseTransformer | AxiosResponseTransformer[]; + headers?: (RawAxiosRequestHeaders & MethodsHeaders) | AxiosHeaders; + params?: any; + paramsSerializer?: ParamsSerializerOptions | CustomParamsSerializer; + data?: D; + timeout?: Milliseconds; + timeoutErrorMessage?: string; + withCredentials?: boolean; + adapter?: AxiosAdapterConfig | AxiosAdapterConfig[]; + auth?: AxiosBasicCredentials; + responseType?: ResponseType; + responseEncoding?: responseEncoding | string; + xsrfCookieName?: string; + xsrfHeaderName?: string; + onUploadProgress?: (progressEvent: AxiosProgressEvent) => void; + onDownloadProgress?: (progressEvent: AxiosProgressEvent) => void; + maxContentLength?: number; + validateStatus?: ((status: number) => boolean) | null; + maxBodyLength?: number; + maxRedirects?: number; + maxRate?: number | [MaxUploadRate, MaxDownloadRate]; + beforeRedirect?: (options: Record, responseDetails: {headers: Record, statusCode: HttpStatusCode}) => void; + socketPath?: string | null; + transport?: any; + httpAgent?: any; + httpsAgent?: any; + proxy?: AxiosProxyConfig | false; + cancelToken?: CancelToken; + decompress?: boolean; + transitional?: TransitionalOptions; + signal?: GenericAbortSignal; + insecureHTTPParser?: boolean; + env?: { + FormData?: new (...args: any[]) => object; + }; + formSerializer?: FormSerializerOptions; + family?: AddressFamily; + lookup?: ((hostname: string, options: object, cb: (err: Error | null, address: LookupAddress | LookupAddress[], family?: AddressFamily) => void) => void) | + ((hostname: string, options: object) => Promise<[address: LookupAddressEntry | LookupAddressEntry[], family?: AddressFamily] | LookupAddress>); + withXSRFToken?: boolean | ((config: InternalAxiosRequestConfig) => boolean | undefined); + fetchOptions?: Omit | Record; +} + +// Alias +export type RawAxiosRequestConfig = AxiosRequestConfig; + +export interface InternalAxiosRequestConfig extends AxiosRequestConfig { + headers: AxiosRequestHeaders; +} + +export interface HeadersDefaults { + common: RawAxiosRequestHeaders; + delete: RawAxiosRequestHeaders; + get: RawAxiosRequestHeaders; + head: RawAxiosRequestHeaders; + post: RawAxiosRequestHeaders; + put: RawAxiosRequestHeaders; + patch: RawAxiosRequestHeaders; + options?: RawAxiosRequestHeaders; + purge?: RawAxiosRequestHeaders; + link?: RawAxiosRequestHeaders; + unlink?: RawAxiosRequestHeaders; +} + +export interface AxiosDefaults extends Omit, 'headers'> { + headers: HeadersDefaults; +} + +export interface CreateAxiosDefaults extends Omit, 'headers'> { + headers?: RawAxiosRequestHeaders | AxiosHeaders | Partial; +} + +export interface AxiosResponse { + data: T; + status: number; + statusText: string; + headers: RawAxiosResponseHeaders | AxiosResponseHeaders; + config: InternalAxiosRequestConfig; + request?: any; +} + +export class AxiosError extends Error { + constructor( + message?: string, + code?: string, + config?: InternalAxiosRequestConfig, + request?: any, + response?: AxiosResponse + ); + + config?: InternalAxiosRequestConfig; + code?: string; + request?: any; + response?: AxiosResponse; + isAxiosError: boolean; + status?: number; + toJSON: () => object; + cause?: Error; + static from( + error: Error | unknown, + code?: string, + config?: InternalAxiosRequestConfig, + request?: any, + response?: AxiosResponse, + customProps?: object, +): AxiosError; + static readonly ERR_FR_TOO_MANY_REDIRECTS = "ERR_FR_TOO_MANY_REDIRECTS"; + static readonly ERR_BAD_OPTION_VALUE = "ERR_BAD_OPTION_VALUE"; + static readonly ERR_BAD_OPTION = "ERR_BAD_OPTION"; + static readonly ERR_NETWORK = "ERR_NETWORK"; + static readonly ERR_DEPRECATED = "ERR_DEPRECATED"; + static readonly ERR_BAD_RESPONSE = "ERR_BAD_RESPONSE"; + static readonly ERR_BAD_REQUEST = "ERR_BAD_REQUEST"; + static readonly ERR_NOT_SUPPORT = "ERR_NOT_SUPPORT"; + static readonly ERR_INVALID_URL = "ERR_INVALID_URL"; + static readonly ERR_CANCELED = "ERR_CANCELED"; + static readonly ECONNABORTED = "ECONNABORTED"; + static readonly ETIMEDOUT = "ETIMEDOUT"; +} + +export class CanceledError extends AxiosError { +} + +export type AxiosPromise = Promise>; + +export interface CancelStatic { + new (message?: string): Cancel; +} + +export interface Cancel { + message: string | undefined; +} + +export interface Canceler { + (message?: string, config?: AxiosRequestConfig, request?: any): void; +} + +export interface CancelTokenStatic { + new (executor: (cancel: Canceler) => void): CancelToken; + source(): CancelTokenSource; +} + +export interface CancelToken { + promise: Promise; + reason?: Cancel; + throwIfRequested(): void; +} + +export interface CancelTokenSource { + token: CancelToken; + cancel: Canceler; +} + +export interface AxiosInterceptorOptions { + synchronous?: boolean; + runWhen?: (config: InternalAxiosRequestConfig) => boolean; +} + +type AxiosRequestInterceptorUse = (onFulfilled?: ((value: T) => T | Promise) | null, onRejected?: ((error: any) => any) | null, options?: AxiosInterceptorOptions) => number; + +type AxiosResponseInterceptorUse = (onFulfilled?: ((value: T) => T | Promise) | null, onRejected?: ((error: any) => any) | null) => number; + +export interface AxiosInterceptorManager { + use: V extends AxiosResponse ? AxiosResponseInterceptorUse : AxiosRequestInterceptorUse; + eject(id: number): void; + clear(): void; +} + +export class Axios { + constructor(config?: AxiosRequestConfig); + defaults: AxiosDefaults; + interceptors: { + request: AxiosInterceptorManager; + response: AxiosInterceptorManager; + }; + getUri(config?: AxiosRequestConfig): string; + request, D = any>(config: AxiosRequestConfig): Promise; + get, D = any>(url: string, config?: AxiosRequestConfig): Promise; + delete, D = any>(url: string, config?: AxiosRequestConfig): Promise; + head, D = any>(url: string, config?: AxiosRequestConfig): Promise; + options, D = any>(url: string, config?: AxiosRequestConfig): Promise; + post, D = any>(url: string, data?: D, config?: AxiosRequestConfig): Promise; + put, D = any>(url: string, data?: D, config?: AxiosRequestConfig): Promise; + patch, D = any>(url: string, data?: D, config?: AxiosRequestConfig): Promise; + postForm, D = any>(url: string, data?: D, config?: AxiosRequestConfig): Promise; + putForm, D = any>(url: string, data?: D, config?: AxiosRequestConfig): Promise; + patchForm, D = any>(url: string, data?: D, config?: AxiosRequestConfig): Promise; +} + +export interface AxiosInstance extends Axios { + , D = any>(config: AxiosRequestConfig): Promise; + , D = any>(url: string, config?: AxiosRequestConfig): Promise; + + create(config?: CreateAxiosDefaults): AxiosInstance; + defaults: Omit & { + headers: HeadersDefaults & { + [key: string]: AxiosHeaderValue + } + }; +} + +export interface GenericFormData { + append(name: string, value: any, options?: any): any; +} + +export interface GenericHTMLFormElement { + name: string; + method: string; + submit(): void; +} + +export function getAdapter(adapters: AxiosAdapterConfig | AxiosAdapterConfig[] | undefined): AxiosAdapter; + +export function toFormData(sourceObj: object, targetFormData?: GenericFormData, options?: FormSerializerOptions): GenericFormData; + +export function formToJSON(form: GenericFormData|GenericHTMLFormElement): object; + +export function isAxiosError(payload: any): payload is AxiosError; + +export function spread(callback: (...args: T[]) => R): (array: T[]) => R; + +export function isCancel(value: any): value is Cancel; + +export function all(values: Array>): Promise; + +export function mergeConfig(config1: AxiosRequestConfig, config2: AxiosRequestConfig): AxiosRequestConfig; + +export interface AxiosStatic extends AxiosInstance { + Cancel: CancelStatic; + CancelToken: CancelTokenStatic; + Axios: typeof Axios; + AxiosError: typeof AxiosError; + HttpStatusCode: typeof HttpStatusCode; + readonly VERSION: string; + isCancel: typeof isCancel; + all: typeof all; + spread: typeof spread; + isAxiosError: typeof isAxiosError; + toFormData: typeof toFormData; + formToJSON: typeof formToJSON; + getAdapter: typeof getAdapter; + CanceledError: typeof CanceledError; + AxiosHeaders: typeof AxiosHeaders; + mergeConfig: typeof mergeConfig; +} + +declare const axios: AxiosStatic; + +export default axios; diff --git a/node_modules/axios/index.js b/node_modules/axios/index.js new file mode 100644 index 0000000..fba3990 --- /dev/null +++ b/node_modules/axios/index.js @@ -0,0 +1,43 @@ +import axios from './lib/axios.js'; + +// This module is intended to unwrap Axios default export as named. +// Keep top-level export same with static properties +// so that it can keep same with es module or cjs +const { + Axios, + AxiosError, + CanceledError, + isCancel, + CancelToken, + VERSION, + all, + Cancel, + isAxiosError, + spread, + toFormData, + AxiosHeaders, + HttpStatusCode, + formToJSON, + getAdapter, + mergeConfig +} = axios; + +export { + axios as default, + Axios, + AxiosError, + CanceledError, + isCancel, + CancelToken, + VERSION, + all, + Cancel, + isAxiosError, + spread, + toFormData, + AxiosHeaders, + HttpStatusCode, + formToJSON, + getAdapter, + mergeConfig +} diff --git a/node_modules/axios/lib/adapters/README.md b/node_modules/axios/lib/adapters/README.md new file mode 100644 index 0000000..68f1118 --- /dev/null +++ b/node_modules/axios/lib/adapters/README.md @@ -0,0 +1,37 @@ +# axios // adapters + +The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received. + +## Example + +```js +var settle = require('./../core/settle'); + +module.exports = function myAdapter(config) { + // At this point: + // - config has been merged with defaults + // - request transformers have already run + // - request interceptors have already run + + // Make the request using config provided + // Upon response settle the Promise + + return new Promise(function(resolve, reject) { + + var response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config: config, + request: request + }; + + settle(resolve, reject, response); + + // From here: + // - response transformers will run + // - response interceptors will run + }); +} +``` diff --git a/node_modules/axios/lib/adapters/adapters.js b/node_modules/axios/lib/adapters/adapters.js new file mode 100644 index 0000000..b466dd5 --- /dev/null +++ b/node_modules/axios/lib/adapters/adapters.js @@ -0,0 +1,79 @@ +import utils from '../utils.js'; +import httpAdapter from './http.js'; +import xhrAdapter from './xhr.js'; +import fetchAdapter from './fetch.js'; +import AxiosError from "../core/AxiosError.js"; + +const knownAdapters = { + http: httpAdapter, + xhr: xhrAdapter, + fetch: fetchAdapter +} + +utils.forEach(knownAdapters, (fn, value) => { + if (fn) { + try { + Object.defineProperty(fn, 'name', {value}); + } catch (e) { + // eslint-disable-next-line no-empty + } + Object.defineProperty(fn, 'adapterName', {value}); + } +}); + +const renderReason = (reason) => `- ${reason}`; + +const isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false; + +export default { + getAdapter: (adapters) => { + adapters = utils.isArray(adapters) ? adapters : [adapters]; + + const {length} = adapters; + let nameOrAdapter; + let adapter; + + const rejectedReasons = {}; + + for (let i = 0; i < length; i++) { + nameOrAdapter = adapters[i]; + let id; + + adapter = nameOrAdapter; + + if (!isResolvedHandle(nameOrAdapter)) { + adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()]; + + if (adapter === undefined) { + throw new AxiosError(`Unknown adapter '${id}'`); + } + } + + if (adapter) { + break; + } + + rejectedReasons[id || '#' + i] = adapter; + } + + if (!adapter) { + + const reasons = Object.entries(rejectedReasons) + .map(([id, state]) => `adapter ${id} ` + + (state === false ? 'is not supported by the environment' : 'is not available in the build') + ); + + let s = length ? + (reasons.length > 1 ? 'since :\n' + reasons.map(renderReason).join('\n') : ' ' + renderReason(reasons[0])) : + 'as no adapter specified'; + + throw new AxiosError( + `There is no suitable adapter to dispatch the request ` + s, + 'ERR_NOT_SUPPORT' + ); + } + + return adapter; + }, + adapters: knownAdapters +} diff --git a/node_modules/axios/lib/adapters/fetch.js b/node_modules/axios/lib/adapters/fetch.js new file mode 100644 index 0000000..0e76cdd --- /dev/null +++ b/node_modules/axios/lib/adapters/fetch.js @@ -0,0 +1,229 @@ +import platform from "../platform/index.js"; +import utils from "../utils.js"; +import AxiosError from "../core/AxiosError.js"; +import composeSignals from "../helpers/composeSignals.js"; +import {trackStream} from "../helpers/trackStream.js"; +import AxiosHeaders from "../core/AxiosHeaders.js"; +import {progressEventReducer, progressEventDecorator, asyncDecorator} from "../helpers/progressEventReducer.js"; +import resolveConfig from "../helpers/resolveConfig.js"; +import settle from "../core/settle.js"; + +const isFetchSupported = typeof fetch === 'function' && typeof Request === 'function' && typeof Response === 'function'; +const isReadableStreamSupported = isFetchSupported && typeof ReadableStream === 'function'; + +// used only inside the fetch adapter +const encodeText = isFetchSupported && (typeof TextEncoder === 'function' ? + ((encoder) => (str) => encoder.encode(str))(new TextEncoder()) : + async (str) => new Uint8Array(await new Response(str).arrayBuffer()) +); + +const test = (fn, ...args) => { + try { + return !!fn(...args); + } catch (e) { + return false + } +} + +const supportsRequestStream = isReadableStreamSupported && test(() => { + let duplexAccessed = false; + + const hasContentType = new Request(platform.origin, { + body: new ReadableStream(), + method: 'POST', + get duplex() { + duplexAccessed = true; + return 'half'; + }, + }).headers.has('Content-Type'); + + return duplexAccessed && !hasContentType; +}); + +const DEFAULT_CHUNK_SIZE = 64 * 1024; + +const supportsResponseStream = isReadableStreamSupported && + test(() => utils.isReadableStream(new Response('').body)); + + +const resolvers = { + stream: supportsResponseStream && ((res) => res.body) +}; + +isFetchSupported && (((res) => { + ['text', 'arrayBuffer', 'blob', 'formData', 'stream'].forEach(type => { + !resolvers[type] && (resolvers[type] = utils.isFunction(res[type]) ? (res) => res[type]() : + (_, config) => { + throw new AxiosError(`Response type '${type}' is not supported`, AxiosError.ERR_NOT_SUPPORT, config); + }) + }); +})(new Response)); + +const getBodyLength = async (body) => { + if (body == null) { + return 0; + } + + if(utils.isBlob(body)) { + return body.size; + } + + if(utils.isSpecCompliantForm(body)) { + const _request = new Request(platform.origin, { + method: 'POST', + body, + }); + return (await _request.arrayBuffer()).byteLength; + } + + if(utils.isArrayBufferView(body) || utils.isArrayBuffer(body)) { + return body.byteLength; + } + + if(utils.isURLSearchParams(body)) { + body = body + ''; + } + + if(utils.isString(body)) { + return (await encodeText(body)).byteLength; + } +} + +const resolveBodyLength = async (headers, body) => { + const length = utils.toFiniteNumber(headers.getContentLength()); + + return length == null ? getBodyLength(body) : length; +} + +export default isFetchSupported && (async (config) => { + let { + url, + method, + data, + signal, + cancelToken, + timeout, + onDownloadProgress, + onUploadProgress, + responseType, + headers, + withCredentials = 'same-origin', + fetchOptions + } = resolveConfig(config); + + responseType = responseType ? (responseType + '').toLowerCase() : 'text'; + + let composedSignal = composeSignals([signal, cancelToken && cancelToken.toAbortSignal()], timeout); + + let request; + + const unsubscribe = composedSignal && composedSignal.unsubscribe && (() => { + composedSignal.unsubscribe(); + }); + + let requestContentLength; + + try { + if ( + onUploadProgress && supportsRequestStream && method !== 'get' && method !== 'head' && + (requestContentLength = await resolveBodyLength(headers, data)) !== 0 + ) { + let _request = new Request(url, { + method: 'POST', + body: data, + duplex: "half" + }); + + let contentTypeHeader; + + if (utils.isFormData(data) && (contentTypeHeader = _request.headers.get('content-type'))) { + headers.setContentType(contentTypeHeader) + } + + if (_request.body) { + const [onProgress, flush] = progressEventDecorator( + requestContentLength, + progressEventReducer(asyncDecorator(onUploadProgress)) + ); + + data = trackStream(_request.body, DEFAULT_CHUNK_SIZE, onProgress, flush); + } + } + + if (!utils.isString(withCredentials)) { + withCredentials = withCredentials ? 'include' : 'omit'; + } + + // Cloudflare Workers throws when credentials are defined + // see https://github.com/cloudflare/workerd/issues/902 + const isCredentialsSupported = "credentials" in Request.prototype; + request = new Request(url, { + ...fetchOptions, + signal: composedSignal, + method: method.toUpperCase(), + headers: headers.normalize().toJSON(), + body: data, + duplex: "half", + credentials: isCredentialsSupported ? withCredentials : undefined + }); + + let response = await fetch(request, fetchOptions); + + const isStreamResponse = supportsResponseStream && (responseType === 'stream' || responseType === 'response'); + + if (supportsResponseStream && (onDownloadProgress || (isStreamResponse && unsubscribe))) { + const options = {}; + + ['status', 'statusText', 'headers'].forEach(prop => { + options[prop] = response[prop]; + }); + + const responseContentLength = utils.toFiniteNumber(response.headers.get('content-length')); + + const [onProgress, flush] = onDownloadProgress && progressEventDecorator( + responseContentLength, + progressEventReducer(asyncDecorator(onDownloadProgress), true) + ) || []; + + response = new Response( + trackStream(response.body, DEFAULT_CHUNK_SIZE, onProgress, () => { + flush && flush(); + unsubscribe && unsubscribe(); + }), + options + ); + } + + responseType = responseType || 'text'; + + let responseData = await resolvers[utils.findKey(resolvers, responseType) || 'text'](response, config); + + !isStreamResponse && unsubscribe && unsubscribe(); + + return await new Promise((resolve, reject) => { + settle(resolve, reject, { + data: responseData, + headers: AxiosHeaders.from(response.headers), + status: response.status, + statusText: response.statusText, + config, + request + }) + }) + } catch (err) { + unsubscribe && unsubscribe(); + + if (err && err.name === 'TypeError' && /Load failed|fetch/i.test(err.message)) { + throw Object.assign( + new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request), + { + cause: err.cause || err + } + ) + } + + throw AxiosError.from(err, err && err.code, config, request); + } +}); + + diff --git a/node_modules/axios/lib/adapters/http.js b/node_modules/axios/lib/adapters/http.js new file mode 100644 index 0000000..0577bf0 --- /dev/null +++ b/node_modules/axios/lib/adapters/http.js @@ -0,0 +1,695 @@ +'use strict'; + +import utils from './../utils.js'; +import settle from './../core/settle.js'; +import buildFullPath from '../core/buildFullPath.js'; +import buildURL from './../helpers/buildURL.js'; +import proxyFromEnv from 'proxy-from-env'; +import http from 'http'; +import https from 'https'; +import util from 'util'; +import followRedirects from 'follow-redirects'; +import zlib from 'zlib'; +import {VERSION} from '../env/data.js'; +import transitionalDefaults from '../defaults/transitional.js'; +import AxiosError from '../core/AxiosError.js'; +import CanceledError from '../cancel/CanceledError.js'; +import platform from '../platform/index.js'; +import fromDataURI from '../helpers/fromDataURI.js'; +import stream from 'stream'; +import AxiosHeaders from '../core/AxiosHeaders.js'; +import AxiosTransformStream from '../helpers/AxiosTransformStream.js'; +import {EventEmitter} from 'events'; +import formDataToStream from "../helpers/formDataToStream.js"; +import readBlob from "../helpers/readBlob.js"; +import ZlibHeaderTransformStream from '../helpers/ZlibHeaderTransformStream.js'; +import callbackify from "../helpers/callbackify.js"; +import {progressEventReducer, progressEventDecorator, asyncDecorator} from "../helpers/progressEventReducer.js"; + +const zlibOptions = { + flush: zlib.constants.Z_SYNC_FLUSH, + finishFlush: zlib.constants.Z_SYNC_FLUSH +}; + +const brotliOptions = { + flush: zlib.constants.BROTLI_OPERATION_FLUSH, + finishFlush: zlib.constants.BROTLI_OPERATION_FLUSH +} + +const isBrotliSupported = utils.isFunction(zlib.createBrotliDecompress); + +const {http: httpFollow, https: httpsFollow} = followRedirects; + +const isHttps = /https:?/; + +const supportedProtocols = platform.protocols.map(protocol => { + return protocol + ':'; +}); + +const flushOnFinish = (stream, [throttled, flush]) => { + stream + .on('end', flush) + .on('error', flush); + + return throttled; +} + +/** + * If the proxy or config beforeRedirects functions are defined, call them with the options + * object. + * + * @param {Object} options - The options object that was passed to the request. + * + * @returns {Object} + */ +function dispatchBeforeRedirect(options, responseDetails) { + if (options.beforeRedirects.proxy) { + options.beforeRedirects.proxy(options); + } + if (options.beforeRedirects.config) { + options.beforeRedirects.config(options, responseDetails); + } +} + +/** + * If the proxy or config afterRedirects functions are defined, call them with the options + * + * @param {http.ClientRequestArgs} options + * @param {AxiosProxyConfig} configProxy configuration from Axios options object + * @param {string} location + * + * @returns {http.ClientRequestArgs} + */ +function setProxy(options, configProxy, location) { + let proxy = configProxy; + if (!proxy && proxy !== false) { + const proxyUrl = proxyFromEnv.getProxyForUrl(location); + if (proxyUrl) { + proxy = new URL(proxyUrl); + } + } + if (proxy) { + // Basic proxy authorization + if (proxy.username) { + proxy.auth = (proxy.username || '') + ':' + (proxy.password || ''); + } + + if (proxy.auth) { + // Support proxy auth object form + if (proxy.auth.username || proxy.auth.password) { + proxy.auth = (proxy.auth.username || '') + ':' + (proxy.auth.password || ''); + } + const base64 = Buffer + .from(proxy.auth, 'utf8') + .toString('base64'); + options.headers['Proxy-Authorization'] = 'Basic ' + base64; + } + + options.headers.host = options.hostname + (options.port ? ':' + options.port : ''); + const proxyHost = proxy.hostname || proxy.host; + options.hostname = proxyHost; + // Replace 'host' since options is not a URL object + options.host = proxyHost; + options.port = proxy.port; + options.path = location; + if (proxy.protocol) { + options.protocol = proxy.protocol.includes(':') ? proxy.protocol : `${proxy.protocol}:`; + } + } + + options.beforeRedirects.proxy = function beforeRedirect(redirectOptions) { + // Configure proxy for redirected request, passing the original config proxy to apply + // the exact same logic as if the redirected request was performed by axios directly. + setProxy(redirectOptions, configProxy, redirectOptions.href); + }; +} + +const isHttpAdapterSupported = typeof process !== 'undefined' && utils.kindOf(process) === 'process'; + +// temporary hotfix + +const wrapAsync = (asyncExecutor) => { + return new Promise((resolve, reject) => { + let onDone; + let isDone; + + const done = (value, isRejected) => { + if (isDone) return; + isDone = true; + onDone && onDone(value, isRejected); + } + + const _resolve = (value) => { + done(value); + resolve(value); + }; + + const _reject = (reason) => { + done(reason, true); + reject(reason); + } + + asyncExecutor(_resolve, _reject, (onDoneHandler) => (onDone = onDoneHandler)).catch(_reject); + }) +}; + +const resolveFamily = ({address, family}) => { + if (!utils.isString(address)) { + throw TypeError('address must be a string'); + } + return ({ + address, + family: family || (address.indexOf('.') < 0 ? 6 : 4) + }); +} + +const buildAddressEntry = (address, family) => resolveFamily(utils.isObject(address) ? address : {address, family}); + +/*eslint consistent-return:0*/ +export default isHttpAdapterSupported && function httpAdapter(config) { + return wrapAsync(async function dispatchHttpRequest(resolve, reject, onDone) { + let {data, lookup, family} = config; + const {responseType, responseEncoding} = config; + const method = config.method.toUpperCase(); + let isDone; + let rejected = false; + let req; + + if (lookup) { + const _lookup = callbackify(lookup, (value) => utils.isArray(value) ? value : [value]); + // hotfix to support opt.all option which is required for node 20.x + lookup = (hostname, opt, cb) => { + _lookup(hostname, opt, (err, arg0, arg1) => { + if (err) { + return cb(err); + } + + const addresses = utils.isArray(arg0) ? arg0.map(addr => buildAddressEntry(addr)) : [buildAddressEntry(arg0, arg1)]; + + opt.all ? cb(err, addresses) : cb(err, addresses[0].address, addresses[0].family); + }); + } + } + + // temporary internal emitter until the AxiosRequest class will be implemented + const emitter = new EventEmitter(); + + const onFinished = () => { + if (config.cancelToken) { + config.cancelToken.unsubscribe(abort); + } + + if (config.signal) { + config.signal.removeEventListener('abort', abort); + } + + emitter.removeAllListeners(); + } + + onDone((value, isRejected) => { + isDone = true; + if (isRejected) { + rejected = true; + onFinished(); + } + }); + + function abort(reason) { + emitter.emit('abort', !reason || reason.type ? new CanceledError(null, config, req) : reason); + } + + emitter.once('abort', reject); + + if (config.cancelToken || config.signal) { + config.cancelToken && config.cancelToken.subscribe(abort); + if (config.signal) { + config.signal.aborted ? abort() : config.signal.addEventListener('abort', abort); + } + } + + // Parse url + const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + const parsed = new URL(fullPath, platform.hasBrowserEnv ? platform.origin : undefined); + const protocol = parsed.protocol || supportedProtocols[0]; + + if (protocol === 'data:') { + let convertedData; + + if (method !== 'GET') { + return settle(resolve, reject, { + status: 405, + statusText: 'method not allowed', + headers: {}, + config + }); + } + + try { + convertedData = fromDataURI(config.url, responseType === 'blob', { + Blob: config.env && config.env.Blob + }); + } catch (err) { + throw AxiosError.from(err, AxiosError.ERR_BAD_REQUEST, config); + } + + if (responseType === 'text') { + convertedData = convertedData.toString(responseEncoding); + + if (!responseEncoding || responseEncoding === 'utf8') { + convertedData = utils.stripBOM(convertedData); + } + } else if (responseType === 'stream') { + convertedData = stream.Readable.from(convertedData); + } + + return settle(resolve, reject, { + data: convertedData, + status: 200, + statusText: 'OK', + headers: new AxiosHeaders(), + config + }); + } + + if (supportedProtocols.indexOf(protocol) === -1) { + return reject(new AxiosError( + 'Unsupported protocol ' + protocol, + AxiosError.ERR_BAD_REQUEST, + config + )); + } + + const headers = AxiosHeaders.from(config.headers).normalize(); + + // Set User-Agent (required by some servers) + // See https://github.com/axios/axios/issues/69 + // User-Agent is specified; handle case where no UA header is desired + // Only set header if it hasn't been set in config + headers.set('User-Agent', 'axios/' + VERSION, false); + + const {onUploadProgress, onDownloadProgress} = config; + const maxRate = config.maxRate; + let maxUploadRate = undefined; + let maxDownloadRate = undefined; + + // support for spec compliant FormData objects + if (utils.isSpecCompliantForm(data)) { + const userBoundary = headers.getContentType(/boundary=([-_\w\d]{10,70})/i); + + data = formDataToStream(data, (formHeaders) => { + headers.set(formHeaders); + }, { + tag: `axios-${VERSION}-boundary`, + boundary: userBoundary && userBoundary[1] || undefined + }); + // support for https://www.npmjs.com/package/form-data api + } else if (utils.isFormData(data) && utils.isFunction(data.getHeaders)) { + headers.set(data.getHeaders()); + + if (!headers.hasContentLength()) { + try { + const knownLength = await util.promisify(data.getLength).call(data); + Number.isFinite(knownLength) && knownLength >= 0 && headers.setContentLength(knownLength); + /*eslint no-empty:0*/ + } catch (e) { + } + } + } else if (utils.isBlob(data) || utils.isFile(data)) { + data.size && headers.setContentType(data.type || 'application/octet-stream'); + headers.setContentLength(data.size || 0); + data = stream.Readable.from(readBlob(data)); + } else if (data && !utils.isStream(data)) { + if (Buffer.isBuffer(data)) { + // Nothing to do... + } else if (utils.isArrayBuffer(data)) { + data = Buffer.from(new Uint8Array(data)); + } else if (utils.isString(data)) { + data = Buffer.from(data, 'utf-8'); + } else { + return reject(new AxiosError( + 'Data after transformation must be a string, an ArrayBuffer, a Buffer, or a Stream', + AxiosError.ERR_BAD_REQUEST, + config + )); + } + + // Add Content-Length header if data exists + headers.setContentLength(data.length, false); + + if (config.maxBodyLength > -1 && data.length > config.maxBodyLength) { + return reject(new AxiosError( + 'Request body larger than maxBodyLength limit', + AxiosError.ERR_BAD_REQUEST, + config + )); + } + } + + const contentLength = utils.toFiniteNumber(headers.getContentLength()); + + if (utils.isArray(maxRate)) { + maxUploadRate = maxRate[0]; + maxDownloadRate = maxRate[1]; + } else { + maxUploadRate = maxDownloadRate = maxRate; + } + + if (data && (onUploadProgress || maxUploadRate)) { + if (!utils.isStream(data)) { + data = stream.Readable.from(data, {objectMode: false}); + } + + data = stream.pipeline([data, new AxiosTransformStream({ + maxRate: utils.toFiniteNumber(maxUploadRate) + })], utils.noop); + + onUploadProgress && data.on('progress', flushOnFinish( + data, + progressEventDecorator( + contentLength, + progressEventReducer(asyncDecorator(onUploadProgress), false, 3) + ) + )); + } + + // HTTP basic authentication + let auth = undefined; + if (config.auth) { + const username = config.auth.username || ''; + const password = config.auth.password || ''; + auth = username + ':' + password; + } + + if (!auth && parsed.username) { + const urlUsername = parsed.username; + const urlPassword = parsed.password; + auth = urlUsername + ':' + urlPassword; + } + + auth && headers.delete('authorization'); + + let path; + + try { + path = buildURL( + parsed.pathname + parsed.search, + config.params, + config.paramsSerializer + ).replace(/^\?/, ''); + } catch (err) { + const customErr = new Error(err.message); + customErr.config = config; + customErr.url = config.url; + customErr.exists = true; + return reject(customErr); + } + + headers.set( + 'Accept-Encoding', + 'gzip, compress, deflate' + (isBrotliSupported ? ', br' : ''), false + ); + + const options = { + path, + method: method, + headers: headers.toJSON(), + agents: { http: config.httpAgent, https: config.httpsAgent }, + auth, + protocol, + family, + beforeRedirect: dispatchBeforeRedirect, + beforeRedirects: {} + }; + + // cacheable-lookup integration hotfix + !utils.isUndefined(lookup) && (options.lookup = lookup); + + if (config.socketPath) { + options.socketPath = config.socketPath; + } else { + options.hostname = parsed.hostname.startsWith("[") ? parsed.hostname.slice(1, -1) : parsed.hostname; + options.port = parsed.port; + setProxy(options, config.proxy, protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path); + } + + let transport; + const isHttpsRequest = isHttps.test(options.protocol); + options.agent = isHttpsRequest ? config.httpsAgent : config.httpAgent; + if (config.transport) { + transport = config.transport; + } else if (config.maxRedirects === 0) { + transport = isHttpsRequest ? https : http; + } else { + if (config.maxRedirects) { + options.maxRedirects = config.maxRedirects; + } + if (config.beforeRedirect) { + options.beforeRedirects.config = config.beforeRedirect; + } + transport = isHttpsRequest ? httpsFollow : httpFollow; + } + + if (config.maxBodyLength > -1) { + options.maxBodyLength = config.maxBodyLength; + } else { + // follow-redirects does not skip comparison, so it should always succeed for axios -1 unlimited + options.maxBodyLength = Infinity; + } + + if (config.insecureHTTPParser) { + options.insecureHTTPParser = config.insecureHTTPParser; + } + + // Create the request + req = transport.request(options, function handleResponse(res) { + if (req.destroyed) return; + + const streams = [res]; + + const responseLength = +res.headers['content-length']; + + if (onDownloadProgress || maxDownloadRate) { + const transformStream = new AxiosTransformStream({ + maxRate: utils.toFiniteNumber(maxDownloadRate) + }); + + onDownloadProgress && transformStream.on('progress', flushOnFinish( + transformStream, + progressEventDecorator( + responseLength, + progressEventReducer(asyncDecorator(onDownloadProgress), true, 3) + ) + )); + + streams.push(transformStream); + } + + // decompress the response body transparently if required + let responseStream = res; + + // return the last request in case of redirects + const lastRequest = res.req || req; + + // if decompress disabled we should not decompress + if (config.decompress !== false && res.headers['content-encoding']) { + // if no content, but headers still say that it is encoded, + // remove the header not confuse downstream operations + if (method === 'HEAD' || res.statusCode === 204) { + delete res.headers['content-encoding']; + } + + switch ((res.headers['content-encoding'] || '').toLowerCase()) { + /*eslint default-case:0*/ + case 'gzip': + case 'x-gzip': + case 'compress': + case 'x-compress': + // add the unzipper to the body stream processing pipeline + streams.push(zlib.createUnzip(zlibOptions)); + + // remove the content-encoding in order to not confuse downstream operations + delete res.headers['content-encoding']; + break; + case 'deflate': + streams.push(new ZlibHeaderTransformStream()); + + // add the unzipper to the body stream processing pipeline + streams.push(zlib.createUnzip(zlibOptions)); + + // remove the content-encoding in order to not confuse downstream operations + delete res.headers['content-encoding']; + break; + case 'br': + if (isBrotliSupported) { + streams.push(zlib.createBrotliDecompress(brotliOptions)); + delete res.headers['content-encoding']; + } + } + } + + responseStream = streams.length > 1 ? stream.pipeline(streams, utils.noop) : streams[0]; + + const offListeners = stream.finished(responseStream, () => { + offListeners(); + onFinished(); + }); + + const response = { + status: res.statusCode, + statusText: res.statusMessage, + headers: new AxiosHeaders(res.headers), + config, + request: lastRequest + }; + + if (responseType === 'stream') { + response.data = responseStream; + settle(resolve, reject, response); + } else { + const responseBuffer = []; + let totalResponseBytes = 0; + + responseStream.on('data', function handleStreamData(chunk) { + responseBuffer.push(chunk); + totalResponseBytes += chunk.length; + + // make sure the content length is not over the maxContentLength if specified + if (config.maxContentLength > -1 && totalResponseBytes > config.maxContentLength) { + // stream.destroy() emit aborted event before calling reject() on Node.js v16 + rejected = true; + responseStream.destroy(); + reject(new AxiosError('maxContentLength size of ' + config.maxContentLength + ' exceeded', + AxiosError.ERR_BAD_RESPONSE, config, lastRequest)); + } + }); + + responseStream.on('aborted', function handlerStreamAborted() { + if (rejected) { + return; + } + + const err = new AxiosError( + 'stream has been aborted', + AxiosError.ERR_BAD_RESPONSE, + config, + lastRequest + ); + responseStream.destroy(err); + reject(err); + }); + + responseStream.on('error', function handleStreamError(err) { + if (req.destroyed) return; + reject(AxiosError.from(err, null, config, lastRequest)); + }); + + responseStream.on('end', function handleStreamEnd() { + try { + let responseData = responseBuffer.length === 1 ? responseBuffer[0] : Buffer.concat(responseBuffer); + if (responseType !== 'arraybuffer') { + responseData = responseData.toString(responseEncoding); + if (!responseEncoding || responseEncoding === 'utf8') { + responseData = utils.stripBOM(responseData); + } + } + response.data = responseData; + } catch (err) { + return reject(AxiosError.from(err, null, config, response.request, response)); + } + settle(resolve, reject, response); + }); + } + + emitter.once('abort', err => { + if (!responseStream.destroyed) { + responseStream.emit('error', err); + responseStream.destroy(); + } + }); + }); + + emitter.once('abort', err => { + reject(err); + req.destroy(err); + }); + + // Handle errors + req.on('error', function handleRequestError(err) { + // @todo remove + // if (req.aborted && err.code !== AxiosError.ERR_FR_TOO_MANY_REDIRECTS) return; + reject(AxiosError.from(err, null, config, req)); + }); + + // set tcp keep alive to prevent drop connection by peer + req.on('socket', function handleRequestSocket(socket) { + // default interval of sending ack packet is 1 minute + socket.setKeepAlive(true, 1000 * 60); + }); + + // Handle request timeout + if (config.timeout) { + // This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types. + const timeout = parseInt(config.timeout, 10); + + if (Number.isNaN(timeout)) { + reject(new AxiosError( + 'error trying to parse `config.timeout` to int', + AxiosError.ERR_BAD_OPTION_VALUE, + config, + req + )); + + return; + } + + // Sometime, the response will be very slow, and does not respond, the connect event will be block by event loop system. + // And timer callback will be fired, and abort() will be invoked before connection, then get "socket hang up" and code ECONNRESET. + // At this time, if we have a large number of request, nodejs will hang up some socket on background. and the number will up and up. + // And then these socket which be hang up will devouring CPU little by little. + // ClientRequest.setTimeout will be fired on the specify milliseconds, and can make sure that abort() will be fired after connect. + req.setTimeout(timeout, function handleRequestTimeout() { + if (isDone) return; + let timeoutErrorMessage = config.timeout ? 'timeout of ' + config.timeout + 'ms exceeded' : 'timeout exceeded'; + const transitional = config.transitional || transitionalDefaults; + if (config.timeoutErrorMessage) { + timeoutErrorMessage = config.timeoutErrorMessage; + } + reject(new AxiosError( + timeoutErrorMessage, + transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, + config, + req + )); + abort(); + }); + } + + + // Send the request + if (utils.isStream(data)) { + let ended = false; + let errored = false; + + data.on('end', () => { + ended = true; + }); + + data.once('error', err => { + errored = true; + req.destroy(err); + }); + + data.on('close', () => { + if (!ended && !errored) { + abort(new CanceledError('Request stream has been aborted', config, req)); + } + }); + + data.pipe(req); + } else { + req.end(data); + } + }); +} + +export const __setProxy = setProxy; diff --git a/node_modules/axios/lib/adapters/xhr.js b/node_modules/axios/lib/adapters/xhr.js new file mode 100644 index 0000000..a7ee548 --- /dev/null +++ b/node_modules/axios/lib/adapters/xhr.js @@ -0,0 +1,197 @@ +import utils from './../utils.js'; +import settle from './../core/settle.js'; +import transitionalDefaults from '../defaults/transitional.js'; +import AxiosError from '../core/AxiosError.js'; +import CanceledError from '../cancel/CanceledError.js'; +import parseProtocol from '../helpers/parseProtocol.js'; +import platform from '../platform/index.js'; +import AxiosHeaders from '../core/AxiosHeaders.js'; +import {progressEventReducer} from '../helpers/progressEventReducer.js'; +import resolveConfig from "../helpers/resolveConfig.js"; + +const isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined'; + +export default isXHRAdapterSupported && function (config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + const _config = resolveConfig(config); + let requestData = _config.data; + const requestHeaders = AxiosHeaders.from(_config.headers).normalize(); + let {responseType, onUploadProgress, onDownloadProgress} = _config; + let onCanceled; + let uploadThrottled, downloadThrottled; + let flushUpload, flushDownload; + + function done() { + flushUpload && flushUpload(); // flush events + flushDownload && flushDownload(); // flush events + + _config.cancelToken && _config.cancelToken.unsubscribe(onCanceled); + + _config.signal && _config.signal.removeEventListener('abort', onCanceled); + } + + let request = new XMLHttpRequest(); + + request.open(_config.method.toUpperCase(), _config.url, true); + + // Set the request timeout in MS + request.timeout = _config.timeout; + + function onloadend() { + if (!request) { + return; + } + // Prepare the response + const responseHeaders = AxiosHeaders.from( + 'getAllResponseHeaders' in request && request.getAllResponseHeaders() + ); + const responseData = !responseType || responseType === 'text' || responseType === 'json' ? + request.responseText : request.response; + const response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config, + request + }; + + settle(function _resolve(value) { + resolve(value); + done(); + }, function _reject(err) { + reject(err); + done(); + }, response); + + // Clean up request + request = null; + } + + if ('onloadend' in request) { + // Use onloadend if available + request.onloadend = onloadend; + } else { + // Listen for ready state to emulate onloadend + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + // readystate handler is calling before onerror or ontimeout handlers, + // so we should call onloadend on the next 'tick' + setTimeout(onloadend); + }; + } + + // Handle browser request cancellation (as opposed to a manual cancellation) + request.onabort = function handleAbort() { + if (!request) { + return; + } + + reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request)); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + let timeoutErrorMessage = _config.timeout ? 'timeout of ' + _config.timeout + 'ms exceeded' : 'timeout exceeded'; + const transitional = _config.transitional || transitionalDefaults; + if (_config.timeoutErrorMessage) { + timeoutErrorMessage = _config.timeoutErrorMessage; + } + reject(new AxiosError( + timeoutErrorMessage, + transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, + config, + request)); + + // Clean up request + request = null; + }; + + // Remove Content-Type if data is undefined + requestData === undefined && requestHeaders.setContentType(null); + + // Add headers to the request + if ('setRequestHeader' in request) { + utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) { + request.setRequestHeader(key, val); + }); + } + + // Add withCredentials to request if needed + if (!utils.isUndefined(_config.withCredentials)) { + request.withCredentials = !!_config.withCredentials; + } + + // Add responseType to request if needed + if (responseType && responseType !== 'json') { + request.responseType = _config.responseType; + } + + // Handle progress if needed + if (onDownloadProgress) { + ([downloadThrottled, flushDownload] = progressEventReducer(onDownloadProgress, true)); + request.addEventListener('progress', downloadThrottled); + } + + // Not all browsers support upload events + if (onUploadProgress && request.upload) { + ([uploadThrottled, flushUpload] = progressEventReducer(onUploadProgress)); + + request.upload.addEventListener('progress', uploadThrottled); + + request.upload.addEventListener('loadend', flushUpload); + } + + if (_config.cancelToken || _config.signal) { + // Handle cancellation + // eslint-disable-next-line func-names + onCanceled = cancel => { + if (!request) { + return; + } + reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel); + request.abort(); + request = null; + }; + + _config.cancelToken && _config.cancelToken.subscribe(onCanceled); + if (_config.signal) { + _config.signal.aborted ? onCanceled() : _config.signal.addEventListener('abort', onCanceled); + } + } + + const protocol = parseProtocol(_config.url); + + if (protocol && platform.protocols.indexOf(protocol) === -1) { + reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config)); + return; + } + + + // Send the request + request.send(requestData || null); + }); +} diff --git a/node_modules/axios/lib/axios.js b/node_modules/axios/lib/axios.js new file mode 100644 index 0000000..873f246 --- /dev/null +++ b/node_modules/axios/lib/axios.js @@ -0,0 +1,89 @@ +'use strict'; + +import utils from './utils.js'; +import bind from './helpers/bind.js'; +import Axios from './core/Axios.js'; +import mergeConfig from './core/mergeConfig.js'; +import defaults from './defaults/index.js'; +import formDataToJSON from './helpers/formDataToJSON.js'; +import CanceledError from './cancel/CanceledError.js'; +import CancelToken from './cancel/CancelToken.js'; +import isCancel from './cancel/isCancel.js'; +import {VERSION} from './env/data.js'; +import toFormData from './helpers/toFormData.js'; +import AxiosError from './core/AxiosError.js'; +import spread from './helpers/spread.js'; +import isAxiosError from './helpers/isAxiosError.js'; +import AxiosHeaders from "./core/AxiosHeaders.js"; +import adapters from './adapters/adapters.js'; +import HttpStatusCode from './helpers/HttpStatusCode.js'; + +/** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * + * @returns {Axios} A new instance of Axios + */ +function createInstance(defaultConfig) { + const context = new Axios(defaultConfig); + const instance = bind(Axios.prototype.request, context); + + // Copy axios.prototype to instance + utils.extend(instance, Axios.prototype, context, {allOwnKeys: true}); + + // Copy context to instance + utils.extend(instance, context, null, {allOwnKeys: true}); + + // Factory for creating new instances + instance.create = function create(instanceConfig) { + return createInstance(mergeConfig(defaultConfig, instanceConfig)); + }; + + return instance; +} + +// Create the default instance to be exported +const axios = createInstance(defaults); + +// Expose Axios class to allow class inheritance +axios.Axios = Axios; + +// Expose Cancel & CancelToken +axios.CanceledError = CanceledError; +axios.CancelToken = CancelToken; +axios.isCancel = isCancel; +axios.VERSION = VERSION; +axios.toFormData = toFormData; + +// Expose AxiosError class +axios.AxiosError = AxiosError; + +// alias for CanceledError for backward compatibility +axios.Cancel = axios.CanceledError; + +// Expose all/spread +axios.all = function all(promises) { + return Promise.all(promises); +}; + +axios.spread = spread; + +// Expose isAxiosError +axios.isAxiosError = isAxiosError; + +// Expose mergeConfig +axios.mergeConfig = mergeConfig; + +axios.AxiosHeaders = AxiosHeaders; + +axios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing); + +axios.getAdapter = adapters.getAdapter; + +axios.HttpStatusCode = HttpStatusCode; + +axios.default = axios; + +// this module should only have a default export +export default axios diff --git a/node_modules/axios/lib/cancel/CancelToken.js b/node_modules/axios/lib/cancel/CancelToken.js new file mode 100644 index 0000000..0fc2025 --- /dev/null +++ b/node_modules/axios/lib/cancel/CancelToken.js @@ -0,0 +1,135 @@ +'use strict'; + +import CanceledError from './CanceledError.js'; + +/** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @param {Function} executor The executor function. + * + * @returns {CancelToken} + */ +class CancelToken { + constructor(executor) { + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + + let resolvePromise; + + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + + const token = this; + + // eslint-disable-next-line func-names + this.promise.then(cancel => { + if (!token._listeners) return; + + let i = token._listeners.length; + + while (i-- > 0) { + token._listeners[i](cancel); + } + token._listeners = null; + }); + + // eslint-disable-next-line func-names + this.promise.then = onfulfilled => { + let _resolve; + // eslint-disable-next-line func-names + const promise = new Promise(resolve => { + token.subscribe(resolve); + _resolve = resolve; + }).then(onfulfilled); + + promise.cancel = function reject() { + token.unsubscribe(_resolve); + }; + + return promise; + }; + + executor(function cancel(message, config, request) { + if (token.reason) { + // Cancellation has already been requested + return; + } + + token.reason = new CanceledError(message, config, request); + resolvePromise(token.reason); + }); + } + + /** + * Throws a `CanceledError` if cancellation has been requested. + */ + throwIfRequested() { + if (this.reason) { + throw this.reason; + } + } + + /** + * Subscribe to the cancel signal + */ + + subscribe(listener) { + if (this.reason) { + listener(this.reason); + return; + } + + if (this._listeners) { + this._listeners.push(listener); + } else { + this._listeners = [listener]; + } + } + + /** + * Unsubscribe from the cancel signal + */ + + unsubscribe(listener) { + if (!this._listeners) { + return; + } + const index = this._listeners.indexOf(listener); + if (index !== -1) { + this._listeners.splice(index, 1); + } + } + + toAbortSignal() { + const controller = new AbortController(); + + const abort = (err) => { + controller.abort(err); + }; + + this.subscribe(abort); + + controller.signal.unsubscribe = () => this.unsubscribe(abort); + + return controller.signal; + } + + /** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ + static source() { + let cancel; + const token = new CancelToken(function executor(c) { + cancel = c; + }); + return { + token, + cancel + }; + } +} + +export default CancelToken; diff --git a/node_modules/axios/lib/cancel/CanceledError.js b/node_modules/axios/lib/cancel/CanceledError.js new file mode 100644 index 0000000..880066e --- /dev/null +++ b/node_modules/axios/lib/cancel/CanceledError.js @@ -0,0 +1,25 @@ +'use strict'; + +import AxiosError from '../core/AxiosError.js'; +import utils from '../utils.js'; + +/** + * A `CanceledError` is an object that is thrown when an operation is canceled. + * + * @param {string=} message The message. + * @param {Object=} config The config. + * @param {Object=} request The request. + * + * @returns {CanceledError} The created error. + */ +function CanceledError(message, config, request) { + // eslint-disable-next-line no-eq-null,eqeqeq + AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request); + this.name = 'CanceledError'; +} + +utils.inherits(CanceledError, AxiosError, { + __CANCEL__: true +}); + +export default CanceledError; diff --git a/node_modules/axios/lib/cancel/isCancel.js b/node_modules/axios/lib/cancel/isCancel.js new file mode 100644 index 0000000..a444a12 --- /dev/null +++ b/node_modules/axios/lib/cancel/isCancel.js @@ -0,0 +1,5 @@ +'use strict'; + +export default function isCancel(value) { + return !!(value && value.__CANCEL__); +} diff --git a/node_modules/axios/lib/core/Axios.js b/node_modules/axios/lib/core/Axios.js new file mode 100644 index 0000000..cff383e --- /dev/null +++ b/node_modules/axios/lib/core/Axios.js @@ -0,0 +1,242 @@ +'use strict'; + +import utils from './../utils.js'; +import buildURL from '../helpers/buildURL.js'; +import InterceptorManager from './InterceptorManager.js'; +import dispatchRequest from './dispatchRequest.js'; +import mergeConfig from './mergeConfig.js'; +import buildFullPath from './buildFullPath.js'; +import validator from '../helpers/validator.js'; +import AxiosHeaders from './AxiosHeaders.js'; + +const validators = validator.validators; + +/** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + * + * @return {Axios} A new instance of Axios + */ +class Axios { + constructor(instanceConfig) { + this.defaults = instanceConfig || {}; + this.interceptors = { + request: new InterceptorManager(), + response: new InterceptorManager() + }; + } + + /** + * Dispatch a request + * + * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults) + * @param {?Object} config + * + * @returns {Promise} The Promise to be fulfilled + */ + async request(configOrUrl, config) { + try { + return await this._request(configOrUrl, config); + } catch (err) { + if (err instanceof Error) { + let dummy = {}; + + Error.captureStackTrace ? Error.captureStackTrace(dummy) : (dummy = new Error()); + + // slice off the Error: ... line + const stack = dummy.stack ? dummy.stack.replace(/^.+\n/, '') : ''; + try { + if (!err.stack) { + err.stack = stack; + // match without the 2 top stack lines + } else if (stack && !String(err.stack).endsWith(stack.replace(/^.+\n.+\n/, ''))) { + err.stack += '\n' + stack + } + } catch (e) { + // ignore the case where "stack" is an un-writable property + } + } + + throw err; + } + } + + _request(configOrUrl, config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof configOrUrl === 'string') { + config = config || {}; + config.url = configOrUrl; + } else { + config = configOrUrl || {}; + } + + config = mergeConfig(this.defaults, config); + + const {transitional, paramsSerializer, headers} = config; + + if (transitional !== undefined) { + validator.assertOptions(transitional, { + silentJSONParsing: validators.transitional(validators.boolean), + forcedJSONParsing: validators.transitional(validators.boolean), + clarifyTimeoutError: validators.transitional(validators.boolean) + }, false); + } + + if (paramsSerializer != null) { + if (utils.isFunction(paramsSerializer)) { + config.paramsSerializer = { + serialize: paramsSerializer + } + } else { + validator.assertOptions(paramsSerializer, { + encode: validators.function, + serialize: validators.function + }, true); + } + } + + // Set config.allowAbsoluteUrls + if (config.allowAbsoluteUrls !== undefined) { + // do nothing + } else if (this.defaults.allowAbsoluteUrls !== undefined) { + config.allowAbsoluteUrls = this.defaults.allowAbsoluteUrls; + } else { + config.allowAbsoluteUrls = true; + } + + validator.assertOptions(config, { + baseUrl: validators.spelling('baseURL'), + withXsrfToken: validators.spelling('withXSRFToken') + }, true); + + // Set config.method + config.method = (config.method || this.defaults.method || 'get').toLowerCase(); + + // Flatten headers + let contextHeaders = headers && utils.merge( + headers.common, + headers[config.method] + ); + + headers && utils.forEach( + ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], + (method) => { + delete headers[method]; + } + ); + + config.headers = AxiosHeaders.concat(contextHeaders, headers); + + // filter out skipped interceptors + const requestInterceptorChain = []; + let synchronousRequestInterceptors = true; + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) { + return; + } + + synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous; + + requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + + const responseInterceptorChain = []; + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected); + }); + + let promise; + let i = 0; + let len; + + if (!synchronousRequestInterceptors) { + const chain = [dispatchRequest.bind(this), undefined]; + chain.unshift.apply(chain, requestInterceptorChain); + chain.push.apply(chain, responseInterceptorChain); + len = chain.length; + + promise = Promise.resolve(config); + + while (i < len) { + promise = promise.then(chain[i++], chain[i++]); + } + + return promise; + } + + len = requestInterceptorChain.length; + + let newConfig = config; + + i = 0; + + while (i < len) { + const onFulfilled = requestInterceptorChain[i++]; + const onRejected = requestInterceptorChain[i++]; + try { + newConfig = onFulfilled(newConfig); + } catch (error) { + onRejected.call(this, error); + break; + } + } + + try { + promise = dispatchRequest.call(this, newConfig); + } catch (error) { + return Promise.reject(error); + } + + i = 0; + len = responseInterceptorChain.length; + + while (i < len) { + promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]); + } + + return promise; + } + + getUri(config) { + config = mergeConfig(this.defaults, config); + const fullPath = buildFullPath(config.baseURL, config.url, config.allowAbsoluteUrls); + return buildURL(fullPath, config.params, config.paramsSerializer); + } +} + +// Provide aliases for supported request methods +utils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, config) { + return this.request(mergeConfig(config || {}, { + method, + url, + data: (config || {}).data + })); + }; +}); + +utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + + function generateHTTPMethod(isForm) { + return function httpMethod(url, data, config) { + return this.request(mergeConfig(config || {}, { + method, + headers: isForm ? { + 'Content-Type': 'multipart/form-data' + } : {}, + url, + data + })); + }; + } + + Axios.prototype[method] = generateHTTPMethod(); + + Axios.prototype[method + 'Form'] = generateHTTPMethod(true); +}); + +export default Axios; diff --git a/node_modules/axios/lib/core/AxiosError.js b/node_modules/axios/lib/core/AxiosError.js new file mode 100644 index 0000000..73da248 --- /dev/null +++ b/node_modules/axios/lib/core/AxiosError.js @@ -0,0 +1,103 @@ +'use strict'; + +import utils from '../utils.js'; + +/** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [config] The config. + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * + * @returns {Error} The created error. + */ +function AxiosError(message, code, config, request, response) { + Error.call(this); + + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } else { + this.stack = (new Error()).stack; + } + + this.message = message; + this.name = 'AxiosError'; + code && (this.code = code); + config && (this.config = config); + request && (this.request = request); + if (response) { + this.response = response; + this.status = response.status ? response.status : null; + } +} + +utils.inherits(AxiosError, Error, { + toJSON: function toJSON() { + return { + // Standard + message: this.message, + name: this.name, + // Microsoft + description: this.description, + number: this.number, + // Mozilla + fileName: this.fileName, + lineNumber: this.lineNumber, + columnNumber: this.columnNumber, + stack: this.stack, + // Axios + config: utils.toJSONObject(this.config), + code: this.code, + status: this.status + }; + } +}); + +const prototype = AxiosError.prototype; +const descriptors = {}; + +[ + 'ERR_BAD_OPTION_VALUE', + 'ERR_BAD_OPTION', + 'ECONNABORTED', + 'ETIMEDOUT', + 'ERR_NETWORK', + 'ERR_FR_TOO_MANY_REDIRECTS', + 'ERR_DEPRECATED', + 'ERR_BAD_RESPONSE', + 'ERR_BAD_REQUEST', + 'ERR_CANCELED', + 'ERR_NOT_SUPPORT', + 'ERR_INVALID_URL' +// eslint-disable-next-line func-names +].forEach(code => { + descriptors[code] = {value: code}; +}); + +Object.defineProperties(AxiosError, descriptors); +Object.defineProperty(prototype, 'isAxiosError', {value: true}); + +// eslint-disable-next-line func-names +AxiosError.from = (error, code, config, request, response, customProps) => { + const axiosError = Object.create(prototype); + + utils.toFlatObject(error, axiosError, function filter(obj) { + return obj !== Error.prototype; + }, prop => { + return prop !== 'isAxiosError'; + }); + + AxiosError.call(axiosError, error.message, code, config, request, response); + + axiosError.cause = error; + + axiosError.name = error.name; + + customProps && Object.assign(axiosError, customProps); + + return axiosError; +}; + +export default AxiosError; diff --git a/node_modules/axios/lib/core/AxiosHeaders.js b/node_modules/axios/lib/core/AxiosHeaders.js new file mode 100644 index 0000000..6744581 --- /dev/null +++ b/node_modules/axios/lib/core/AxiosHeaders.js @@ -0,0 +1,314 @@ +'use strict'; + +import utils from '../utils.js'; +import parseHeaders from '../helpers/parseHeaders.js'; + +const $internals = Symbol('internals'); + +function normalizeHeader(header) { + return header && String(header).trim().toLowerCase(); +} + +function normalizeValue(value) { + if (value === false || value == null) { + return value; + } + + return utils.isArray(value) ? value.map(normalizeValue) : String(value); +} + +function parseTokens(str) { + const tokens = Object.create(null); + const tokensRE = /([^\s,;=]+)\s*(?:=\s*([^,;]+))?/g; + let match; + + while ((match = tokensRE.exec(str))) { + tokens[match[1]] = match[2]; + } + + return tokens; +} + +const isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim()); + +function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) { + if (utils.isFunction(filter)) { + return filter.call(this, value, header); + } + + if (isHeaderNameFilter) { + value = header; + } + + if (!utils.isString(value)) return; + + if (utils.isString(filter)) { + return value.indexOf(filter) !== -1; + } + + if (utils.isRegExp(filter)) { + return filter.test(value); + } +} + +function formatHeader(header) { + return header.trim() + .toLowerCase().replace(/([a-z\d])(\w*)/g, (w, char, str) => { + return char.toUpperCase() + str; + }); +} + +function buildAccessors(obj, header) { + const accessorName = utils.toCamelCase(' ' + header); + + ['get', 'set', 'has'].forEach(methodName => { + Object.defineProperty(obj, methodName + accessorName, { + value: function(arg1, arg2, arg3) { + return this[methodName].call(this, header, arg1, arg2, arg3); + }, + configurable: true + }); + }); +} + +class AxiosHeaders { + constructor(headers) { + headers && this.set(headers); + } + + set(header, valueOrRewrite, rewrite) { + const self = this; + + function setHeader(_value, _header, _rewrite) { + const lHeader = normalizeHeader(_header); + + if (!lHeader) { + throw new Error('header name must be a non-empty string'); + } + + const key = utils.findKey(self, lHeader); + + if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) { + self[key || _header] = normalizeValue(_value); + } + } + + const setHeaders = (headers, _rewrite) => + utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite)); + + if (utils.isPlainObject(header) || header instanceof this.constructor) { + setHeaders(header, valueOrRewrite) + } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) { + setHeaders(parseHeaders(header), valueOrRewrite); + } else if (utils.isObject(header) && utils.isIterable(header)) { + let obj = {}, dest, key; + for (const entry of header) { + if (!utils.isArray(entry)) { + throw TypeError('Object iterator must return a key-value pair'); + } + + obj[key = entry[0]] = (dest = obj[key]) ? + (utils.isArray(dest) ? [...dest, entry[1]] : [dest, entry[1]]) : entry[1]; + } + + setHeaders(obj, valueOrRewrite) + } else { + header != null && setHeader(valueOrRewrite, header, rewrite); + } + + return this; + } + + get(header, parser) { + header = normalizeHeader(header); + + if (header) { + const key = utils.findKey(this, header); + + if (key) { + const value = this[key]; + + if (!parser) { + return value; + } + + if (parser === true) { + return parseTokens(value); + } + + if (utils.isFunction(parser)) { + return parser.call(this, value, key); + } + + if (utils.isRegExp(parser)) { + return parser.exec(value); + } + + throw new TypeError('parser must be boolean|regexp|function'); + } + } + } + + has(header, matcher) { + header = normalizeHeader(header); + + if (header) { + const key = utils.findKey(this, header); + + return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher))); + } + + return false; + } + + delete(header, matcher) { + const self = this; + let deleted = false; + + function deleteHeader(_header) { + _header = normalizeHeader(_header); + + if (_header) { + const key = utils.findKey(self, _header); + + if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) { + delete self[key]; + + deleted = true; + } + } + } + + if (utils.isArray(header)) { + header.forEach(deleteHeader); + } else { + deleteHeader(header); + } + + return deleted; + } + + clear(matcher) { + const keys = Object.keys(this); + let i = keys.length; + let deleted = false; + + while (i--) { + const key = keys[i]; + if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) { + delete this[key]; + deleted = true; + } + } + + return deleted; + } + + normalize(format) { + const self = this; + const headers = {}; + + utils.forEach(this, (value, header) => { + const key = utils.findKey(headers, header); + + if (key) { + self[key] = normalizeValue(value); + delete self[header]; + return; + } + + const normalized = format ? formatHeader(header) : String(header).trim(); + + if (normalized !== header) { + delete self[header]; + } + + self[normalized] = normalizeValue(value); + + headers[normalized] = true; + }); + + return this; + } + + concat(...targets) { + return this.constructor.concat(this, ...targets); + } + + toJSON(asStrings) { + const obj = Object.create(null); + + utils.forEach(this, (value, header) => { + value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value); + }); + + return obj; + } + + [Symbol.iterator]() { + return Object.entries(this.toJSON())[Symbol.iterator](); + } + + toString() { + return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\n'); + } + + getSetCookie() { + return this.get("set-cookie") || []; + } + + get [Symbol.toStringTag]() { + return 'AxiosHeaders'; + } + + static from(thing) { + return thing instanceof this ? thing : new this(thing); + } + + static concat(first, ...targets) { + const computed = new this(first); + + targets.forEach((target) => computed.set(target)); + + return computed; + } + + static accessor(header) { + const internals = this[$internals] = (this[$internals] = { + accessors: {} + }); + + const accessors = internals.accessors; + const prototype = this.prototype; + + function defineAccessor(_header) { + const lHeader = normalizeHeader(_header); + + if (!accessors[lHeader]) { + buildAccessors(prototype, _header); + accessors[lHeader] = true; + } + } + + utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header); + + return this; + } +} + +AxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']); + +// reserved names hotfix +utils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => { + let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set` + return { + get: () => value, + set(headerValue) { + this[mapped] = headerValue; + } + } +}); + +utils.freezeMethods(AxiosHeaders); + +export default AxiosHeaders; diff --git a/node_modules/axios/lib/core/InterceptorManager.js b/node_modules/axios/lib/core/InterceptorManager.js new file mode 100644 index 0000000..6657a9d --- /dev/null +++ b/node_modules/axios/lib/core/InterceptorManager.js @@ -0,0 +1,71 @@ +'use strict'; + +import utils from './../utils.js'; + +class InterceptorManager { + constructor() { + this.handlers = []; + } + + /** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ + use(fulfilled, rejected, options) { + this.handlers.push({ + fulfilled, + rejected, + synchronous: options ? options.synchronous : false, + runWhen: options ? options.runWhen : null + }); + return this.handlers.length - 1; + } + + /** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + * + * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise + */ + eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } + } + + /** + * Clear all interceptors from the stack + * + * @returns {void} + */ + clear() { + if (this.handlers) { + this.handlers = []; + } + } + + /** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + * + * @returns {void} + */ + forEach(fn) { + utils.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); + } +} + +export default InterceptorManager; diff --git a/node_modules/axios/lib/core/README.md b/node_modules/axios/lib/core/README.md new file mode 100644 index 0000000..84559ce --- /dev/null +++ b/node_modules/axios/lib/core/README.md @@ -0,0 +1,8 @@ +# axios // core + +The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are: + +- Dispatching requests + - Requests sent via `adapters/` (see lib/adapters/README.md) +- Managing interceptors +- Handling config diff --git a/node_modules/axios/lib/core/buildFullPath.js b/node_modules/axios/lib/core/buildFullPath.js new file mode 100644 index 0000000..3050bd6 --- /dev/null +++ b/node_modules/axios/lib/core/buildFullPath.js @@ -0,0 +1,22 @@ +'use strict'; + +import isAbsoluteURL from '../helpers/isAbsoluteURL.js'; +import combineURLs from '../helpers/combineURLs.js'; + +/** + * Creates a new URL by combining the baseURL with the requestedURL, + * only when the requestedURL is not already an absolute URL. + * If the requestURL is absolute, this function returns the requestedURL untouched. + * + * @param {string} baseURL The base URL + * @param {string} requestedURL Absolute or relative URL to combine + * + * @returns {string} The combined full path + */ +export default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) { + let isRelativeUrl = !isAbsoluteURL(requestedURL); + if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) { + return combineURLs(baseURL, requestedURL); + } + return requestedURL; +} diff --git a/node_modules/axios/lib/core/dispatchRequest.js b/node_modules/axios/lib/core/dispatchRequest.js new file mode 100644 index 0000000..9e306aa --- /dev/null +++ b/node_modules/axios/lib/core/dispatchRequest.js @@ -0,0 +1,81 @@ +'use strict'; + +import transformData from './transformData.js'; +import isCancel from '../cancel/isCancel.js'; +import defaults from '../defaults/index.js'; +import CanceledError from '../cancel/CanceledError.js'; +import AxiosHeaders from '../core/AxiosHeaders.js'; +import adapters from "../adapters/adapters.js"; + +/** + * Throws a `CanceledError` if cancellation has been requested. + * + * @param {Object} config The config that is to be used for the request + * + * @returns {void} + */ +function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } + + if (config.signal && config.signal.aborted) { + throw new CanceledError(null, config); + } +} + +/** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * + * @returns {Promise} The Promise to be fulfilled + */ +export default function dispatchRequest(config) { + throwIfCancellationRequested(config); + + config.headers = AxiosHeaders.from(config.headers); + + // Transform request data + config.data = transformData.call( + config, + config.transformRequest + ); + + if (['post', 'put', 'patch'].indexOf(config.method) !== -1) { + config.headers.setContentType('application/x-www-form-urlencoded', false); + } + + const adapter = adapters.getAdapter(config.adapter || defaults.adapter); + + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData.call( + config, + config.transformResponse, + response + ); + + response.headers = AxiosHeaders.from(response.headers); + + return response; + }, function onAdapterRejection(reason) { + if (!isCancel(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData.call( + config, + config.transformResponse, + reason.response + ); + reason.response.headers = AxiosHeaders.from(reason.response.headers); + } + } + + return Promise.reject(reason); + }); +} diff --git a/node_modules/axios/lib/core/mergeConfig.js b/node_modules/axios/lib/core/mergeConfig.js new file mode 100644 index 0000000..c510073 --- /dev/null +++ b/node_modules/axios/lib/core/mergeConfig.js @@ -0,0 +1,106 @@ +'use strict'; + +import utils from '../utils.js'; +import AxiosHeaders from "./AxiosHeaders.js"; + +const headersToObject = (thing) => thing instanceof AxiosHeaders ? { ...thing } : thing; + +/** + * Config-specific merge-function which creates a new config-object + * by merging two configuration objects together. + * + * @param {Object} config1 + * @param {Object} config2 + * + * @returns {Object} New object resulting from merging config2 to config1 + */ +export default function mergeConfig(config1, config2) { + // eslint-disable-next-line no-param-reassign + config2 = config2 || {}; + const config = {}; + + function getMergedValue(target, source, prop, caseless) { + if (utils.isPlainObject(target) && utils.isPlainObject(source)) { + return utils.merge.call({caseless}, target, source); + } else if (utils.isPlainObject(source)) { + return utils.merge({}, source); + } else if (utils.isArray(source)) { + return source.slice(); + } + return source; + } + + // eslint-disable-next-line consistent-return + function mergeDeepProperties(a, b, prop , caseless) { + if (!utils.isUndefined(b)) { + return getMergedValue(a, b, prop , caseless); + } else if (!utils.isUndefined(a)) { + return getMergedValue(undefined, a, prop , caseless); + } + } + + // eslint-disable-next-line consistent-return + function valueFromConfig2(a, b) { + if (!utils.isUndefined(b)) { + return getMergedValue(undefined, b); + } + } + + // eslint-disable-next-line consistent-return + function defaultToConfig2(a, b) { + if (!utils.isUndefined(b)) { + return getMergedValue(undefined, b); + } else if (!utils.isUndefined(a)) { + return getMergedValue(undefined, a); + } + } + + // eslint-disable-next-line consistent-return + function mergeDirectKeys(a, b, prop) { + if (prop in config2) { + return getMergedValue(a, b); + } else if (prop in config1) { + return getMergedValue(undefined, a); + } + } + + const mergeMap = { + url: valueFromConfig2, + method: valueFromConfig2, + data: valueFromConfig2, + baseURL: defaultToConfig2, + transformRequest: defaultToConfig2, + transformResponse: defaultToConfig2, + paramsSerializer: defaultToConfig2, + timeout: defaultToConfig2, + timeoutMessage: defaultToConfig2, + withCredentials: defaultToConfig2, + withXSRFToken: defaultToConfig2, + adapter: defaultToConfig2, + responseType: defaultToConfig2, + xsrfCookieName: defaultToConfig2, + xsrfHeaderName: defaultToConfig2, + onUploadProgress: defaultToConfig2, + onDownloadProgress: defaultToConfig2, + decompress: defaultToConfig2, + maxContentLength: defaultToConfig2, + maxBodyLength: defaultToConfig2, + beforeRedirect: defaultToConfig2, + transport: defaultToConfig2, + httpAgent: defaultToConfig2, + httpsAgent: defaultToConfig2, + cancelToken: defaultToConfig2, + socketPath: defaultToConfig2, + responseEncoding: defaultToConfig2, + validateStatus: mergeDirectKeys, + headers: (a, b , prop) => mergeDeepProperties(headersToObject(a), headersToObject(b),prop, true) + }; + + utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) { + const merge = mergeMap[prop] || mergeDeepProperties; + const configValue = merge(config1[prop], config2[prop], prop); + (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue); + }); + + return config; +} diff --git a/node_modules/axios/lib/core/settle.js b/node_modules/axios/lib/core/settle.js new file mode 100644 index 0000000..ac905c4 --- /dev/null +++ b/node_modules/axios/lib/core/settle.js @@ -0,0 +1,27 @@ +'use strict'; + +import AxiosError from './AxiosError.js'; + +/** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + * + * @returns {object} The response. + */ +export default function settle(resolve, reject, response) { + const validateStatus = response.config.validateStatus; + if (!response.status || !validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(new AxiosError( + 'Request failed with status code ' + response.status, + [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4], + response.config, + response.request, + response + )); + } +} diff --git a/node_modules/axios/lib/core/transformData.js b/node_modules/axios/lib/core/transformData.js new file mode 100644 index 0000000..eeb5a8a --- /dev/null +++ b/node_modules/axios/lib/core/transformData.js @@ -0,0 +1,28 @@ +'use strict'; + +import utils from './../utils.js'; +import defaults from '../defaults/index.js'; +import AxiosHeaders from '../core/AxiosHeaders.js'; + +/** + * Transform the data for a request or a response + * + * @param {Array|Function} fns A single function or Array of functions + * @param {?Object} response The response object + * + * @returns {*} The resulting transformed data + */ +export default function transformData(fns, response) { + const config = this || defaults; + const context = response || config; + const headers = AxiosHeaders.from(context.headers); + let data = context.data; + + utils.forEach(fns, function transform(fn) { + data = fn.call(config, data, headers.normalize(), response ? response.status : undefined); + }); + + headers.normalize(); + + return data; +} diff --git a/node_modules/axios/lib/defaults/index.js b/node_modules/axios/lib/defaults/index.js new file mode 100644 index 0000000..e543fea --- /dev/null +++ b/node_modules/axios/lib/defaults/index.js @@ -0,0 +1,161 @@ +'use strict'; + +import utils from '../utils.js'; +import AxiosError from '../core/AxiosError.js'; +import transitionalDefaults from './transitional.js'; +import toFormData from '../helpers/toFormData.js'; +import toURLEncodedForm from '../helpers/toURLEncodedForm.js'; +import platform from '../platform/index.js'; +import formDataToJSON from '../helpers/formDataToJSON.js'; + +/** + * It takes a string, tries to parse it, and if it fails, it returns the stringified version + * of the input + * + * @param {any} rawValue - The value to be stringified. + * @param {Function} parser - A function that parses a string into a JavaScript object. + * @param {Function} encoder - A function that takes a value and returns a string. + * + * @returns {string} A stringified version of the rawValue. + */ +function stringifySafely(rawValue, parser, encoder) { + if (utils.isString(rawValue)) { + try { + (parser || JSON.parse)(rawValue); + return utils.trim(rawValue); + } catch (e) { + if (e.name !== 'SyntaxError') { + throw e; + } + } + } + + return (encoder || JSON.stringify)(rawValue); +} + +const defaults = { + + transitional: transitionalDefaults, + + adapter: ['xhr', 'http', 'fetch'], + + transformRequest: [function transformRequest(data, headers) { + const contentType = headers.getContentType() || ''; + const hasJSONContentType = contentType.indexOf('application/json') > -1; + const isObjectPayload = utils.isObject(data); + + if (isObjectPayload && utils.isHTMLForm(data)) { + data = new FormData(data); + } + + const isFormData = utils.isFormData(data); + + if (isFormData) { + return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data; + } + + if (utils.isArrayBuffer(data) || + utils.isBuffer(data) || + utils.isStream(data) || + utils.isFile(data) || + utils.isBlob(data) || + utils.isReadableStream(data) + ) { + return data; + } + if (utils.isArrayBufferView(data)) { + return data.buffer; + } + if (utils.isURLSearchParams(data)) { + headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false); + return data.toString(); + } + + let isFileList; + + if (isObjectPayload) { + if (contentType.indexOf('application/x-www-form-urlencoded') > -1) { + return toURLEncodedForm(data, this.formSerializer).toString(); + } + + if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) { + const _FormData = this.env && this.env.FormData; + + return toFormData( + isFileList ? {'files[]': data} : data, + _FormData && new _FormData(), + this.formSerializer + ); + } + } + + if (isObjectPayload || hasJSONContentType ) { + headers.setContentType('application/json', false); + return stringifySafely(data); + } + + return data; + }], + + transformResponse: [function transformResponse(data) { + const transitional = this.transitional || defaults.transitional; + const forcedJSONParsing = transitional && transitional.forcedJSONParsing; + const JSONRequested = this.responseType === 'json'; + + if (utils.isResponse(data) || utils.isReadableStream(data)) { + return data; + } + + if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) { + const silentJSONParsing = transitional && transitional.silentJSONParsing; + const strictJSONParsing = !silentJSONParsing && JSONRequested; + + try { + return JSON.parse(data); + } catch (e) { + if (strictJSONParsing) { + if (e.name === 'SyntaxError') { + throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response); + } + throw e; + } + } + } + + return data; + }], + + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + + maxContentLength: -1, + maxBodyLength: -1, + + env: { + FormData: platform.classes.FormData, + Blob: platform.classes.Blob + }, + + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + }, + + headers: { + common: { + 'Accept': 'application/json, text/plain, */*', + 'Content-Type': undefined + } + } +}; + +utils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => { + defaults.headers[method] = {}; +}); + +export default defaults; diff --git a/node_modules/axios/lib/defaults/transitional.js b/node_modules/axios/lib/defaults/transitional.js new file mode 100644 index 0000000..f891331 --- /dev/null +++ b/node_modules/axios/lib/defaults/transitional.js @@ -0,0 +1,7 @@ +'use strict'; + +export default { + silentJSONParsing: true, + forcedJSONParsing: true, + clarifyTimeoutError: false +}; diff --git a/node_modules/axios/lib/env/README.md b/node_modules/axios/lib/env/README.md new file mode 100644 index 0000000..b41baff --- /dev/null +++ b/node_modules/axios/lib/env/README.md @@ -0,0 +1,3 @@ +# axios // env + +The `data.js` file is updated automatically when the package version is upgrading. Please do not edit it manually. diff --git a/node_modules/axios/lib/env/classes/FormData.js b/node_modules/axios/lib/env/classes/FormData.js new file mode 100644 index 0000000..862adb9 --- /dev/null +++ b/node_modules/axios/lib/env/classes/FormData.js @@ -0,0 +1,2 @@ +import _FormData from 'form-data'; +export default typeof FormData !== 'undefined' ? FormData : _FormData; diff --git a/node_modules/axios/lib/env/data.js b/node_modules/axios/lib/env/data.js new file mode 100644 index 0000000..c7ca252 --- /dev/null +++ b/node_modules/axios/lib/env/data.js @@ -0,0 +1 @@ +export const VERSION = "1.10.0"; \ No newline at end of file diff --git a/node_modules/axios/lib/helpers/AxiosTransformStream.js b/node_modules/axios/lib/helpers/AxiosTransformStream.js new file mode 100644 index 0000000..4140071 --- /dev/null +++ b/node_modules/axios/lib/helpers/AxiosTransformStream.js @@ -0,0 +1,143 @@ +'use strict'; + +import stream from 'stream'; +import utils from '../utils.js'; + +const kInternals = Symbol('internals'); + +class AxiosTransformStream extends stream.Transform{ + constructor(options) { + options = utils.toFlatObject(options, { + maxRate: 0, + chunkSize: 64 * 1024, + minChunkSize: 100, + timeWindow: 500, + ticksRate: 2, + samplesCount: 15 + }, null, (prop, source) => { + return !utils.isUndefined(source[prop]); + }); + + super({ + readableHighWaterMark: options.chunkSize + }); + + const internals = this[kInternals] = { + timeWindow: options.timeWindow, + chunkSize: options.chunkSize, + maxRate: options.maxRate, + minChunkSize: options.minChunkSize, + bytesSeen: 0, + isCaptured: false, + notifiedBytesLoaded: 0, + ts: Date.now(), + bytes: 0, + onReadCallback: null + }; + + this.on('newListener', event => { + if (event === 'progress') { + if (!internals.isCaptured) { + internals.isCaptured = true; + } + } + }); + } + + _read(size) { + const internals = this[kInternals]; + + if (internals.onReadCallback) { + internals.onReadCallback(); + } + + return super._read(size); + } + + _transform(chunk, encoding, callback) { + const internals = this[kInternals]; + const maxRate = internals.maxRate; + + const readableHighWaterMark = this.readableHighWaterMark; + + const timeWindow = internals.timeWindow; + + const divider = 1000 / timeWindow; + const bytesThreshold = (maxRate / divider); + const minChunkSize = internals.minChunkSize !== false ? Math.max(internals.minChunkSize, bytesThreshold * 0.01) : 0; + + const pushChunk = (_chunk, _callback) => { + const bytes = Buffer.byteLength(_chunk); + internals.bytesSeen += bytes; + internals.bytes += bytes; + + internals.isCaptured && this.emit('progress', internals.bytesSeen); + + if (this.push(_chunk)) { + process.nextTick(_callback); + } else { + internals.onReadCallback = () => { + internals.onReadCallback = null; + process.nextTick(_callback); + }; + } + } + + const transformChunk = (_chunk, _callback) => { + const chunkSize = Buffer.byteLength(_chunk); + let chunkRemainder = null; + let maxChunkSize = readableHighWaterMark; + let bytesLeft; + let passed = 0; + + if (maxRate) { + const now = Date.now(); + + if (!internals.ts || (passed = (now - internals.ts)) >= timeWindow) { + internals.ts = now; + bytesLeft = bytesThreshold - internals.bytes; + internals.bytes = bytesLeft < 0 ? -bytesLeft : 0; + passed = 0; + } + + bytesLeft = bytesThreshold - internals.bytes; + } + + if (maxRate) { + if (bytesLeft <= 0) { + // next time window + return setTimeout(() => { + _callback(null, _chunk); + }, timeWindow - passed); + } + + if (bytesLeft < maxChunkSize) { + maxChunkSize = bytesLeft; + } + } + + if (maxChunkSize && chunkSize > maxChunkSize && (chunkSize - maxChunkSize) > minChunkSize) { + chunkRemainder = _chunk.subarray(maxChunkSize); + _chunk = _chunk.subarray(0, maxChunkSize); + } + + pushChunk(_chunk, chunkRemainder ? () => { + process.nextTick(_callback, null, chunkRemainder); + } : _callback); + }; + + transformChunk(chunk, function transformNextChunk(err, _chunk) { + if (err) { + return callback(err); + } + + if (_chunk) { + transformChunk(_chunk, transformNextChunk); + } else { + callback(null); + } + }); + } +} + +export default AxiosTransformStream; diff --git a/node_modules/axios/lib/helpers/AxiosURLSearchParams.js b/node_modules/axios/lib/helpers/AxiosURLSearchParams.js new file mode 100644 index 0000000..b9aa9f0 --- /dev/null +++ b/node_modules/axios/lib/helpers/AxiosURLSearchParams.js @@ -0,0 +1,58 @@ +'use strict'; + +import toFormData from './toFormData.js'; + +/** + * It encodes a string by replacing all characters that are not in the unreserved set with + * their percent-encoded equivalents + * + * @param {string} str - The string to encode. + * + * @returns {string} The encoded string. + */ +function encode(str) { + const charMap = { + '!': '%21', + "'": '%27', + '(': '%28', + ')': '%29', + '~': '%7E', + '%20': '+', + '%00': '\x00' + }; + return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) { + return charMap[match]; + }); +} + +/** + * It takes a params object and converts it to a FormData object + * + * @param {Object} params - The parameters to be converted to a FormData object. + * @param {Object} options - The options object passed to the Axios constructor. + * + * @returns {void} + */ +function AxiosURLSearchParams(params, options) { + this._pairs = []; + + params && toFormData(params, this, options); +} + +const prototype = AxiosURLSearchParams.prototype; + +prototype.append = function append(name, value) { + this._pairs.push([name, value]); +}; + +prototype.toString = function toString(encoder) { + const _encode = encoder ? function(value) { + return encoder.call(this, value, encode); + } : encode; + + return this._pairs.map(function each(pair) { + return _encode(pair[0]) + '=' + _encode(pair[1]); + }, '').join('&'); +}; + +export default AxiosURLSearchParams; diff --git a/node_modules/axios/lib/helpers/HttpStatusCode.js b/node_modules/axios/lib/helpers/HttpStatusCode.js new file mode 100644 index 0000000..b3e7adc --- /dev/null +++ b/node_modules/axios/lib/helpers/HttpStatusCode.js @@ -0,0 +1,71 @@ +const HttpStatusCode = { + Continue: 100, + SwitchingProtocols: 101, + Processing: 102, + EarlyHints: 103, + Ok: 200, + Created: 201, + Accepted: 202, + NonAuthoritativeInformation: 203, + NoContent: 204, + ResetContent: 205, + PartialContent: 206, + MultiStatus: 207, + AlreadyReported: 208, + ImUsed: 226, + MultipleChoices: 300, + MovedPermanently: 301, + Found: 302, + SeeOther: 303, + NotModified: 304, + UseProxy: 305, + Unused: 306, + TemporaryRedirect: 307, + PermanentRedirect: 308, + BadRequest: 400, + Unauthorized: 401, + PaymentRequired: 402, + Forbidden: 403, + NotFound: 404, + MethodNotAllowed: 405, + NotAcceptable: 406, + ProxyAuthenticationRequired: 407, + RequestTimeout: 408, + Conflict: 409, + Gone: 410, + LengthRequired: 411, + PreconditionFailed: 412, + PayloadTooLarge: 413, + UriTooLong: 414, + UnsupportedMediaType: 415, + RangeNotSatisfiable: 416, + ExpectationFailed: 417, + ImATeapot: 418, + MisdirectedRequest: 421, + UnprocessableEntity: 422, + Locked: 423, + FailedDependency: 424, + TooEarly: 425, + UpgradeRequired: 426, + PreconditionRequired: 428, + TooManyRequests: 429, + RequestHeaderFieldsTooLarge: 431, + UnavailableForLegalReasons: 451, + InternalServerError: 500, + NotImplemented: 501, + BadGateway: 502, + ServiceUnavailable: 503, + GatewayTimeout: 504, + HttpVersionNotSupported: 505, + VariantAlsoNegotiates: 506, + InsufficientStorage: 507, + LoopDetected: 508, + NotExtended: 510, + NetworkAuthenticationRequired: 511, +}; + +Object.entries(HttpStatusCode).forEach(([key, value]) => { + HttpStatusCode[value] = key; +}); + +export default HttpStatusCode; diff --git a/node_modules/axios/lib/helpers/README.md b/node_modules/axios/lib/helpers/README.md new file mode 100644 index 0000000..4ae3419 --- /dev/null +++ b/node_modules/axios/lib/helpers/README.md @@ -0,0 +1,7 @@ +# axios // helpers + +The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like: + +- Browser polyfills +- Managing cookies +- Parsing HTTP headers diff --git a/node_modules/axios/lib/helpers/ZlibHeaderTransformStream.js b/node_modules/axios/lib/helpers/ZlibHeaderTransformStream.js new file mode 100644 index 0000000..d1791f0 --- /dev/null +++ b/node_modules/axios/lib/helpers/ZlibHeaderTransformStream.js @@ -0,0 +1,28 @@ +"use strict"; + +import stream from "stream"; + +class ZlibHeaderTransformStream extends stream.Transform { + __transform(chunk, encoding, callback) { + this.push(chunk); + callback(); + } + + _transform(chunk, encoding, callback) { + if (chunk.length !== 0) { + this._transform = this.__transform; + + // Add Default Compression headers if no zlib headers are present + if (chunk[0] !== 120) { // Hex: 78 + const header = Buffer.alloc(2); + header[0] = 120; // Hex: 78 + header[1] = 156; // Hex: 9C + this.push(header, encoding); + } + } + + this.__transform(chunk, encoding, callback); + } +} + +export default ZlibHeaderTransformStream; diff --git a/node_modules/axios/lib/helpers/bind.js b/node_modules/axios/lib/helpers/bind.js new file mode 100644 index 0000000..b3aa83b --- /dev/null +++ b/node_modules/axios/lib/helpers/bind.js @@ -0,0 +1,7 @@ +'use strict'; + +export default function bind(fn, thisArg) { + return function wrap() { + return fn.apply(thisArg, arguments); + }; +} diff --git a/node_modules/axios/lib/helpers/buildURL.js b/node_modules/axios/lib/helpers/buildURL.js new file mode 100644 index 0000000..5c5eb57 --- /dev/null +++ b/node_modules/axios/lib/helpers/buildURL.js @@ -0,0 +1,69 @@ +'use strict'; + +import utils from '../utils.js'; +import AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js'; + +/** + * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their + * URI encoded counterparts + * + * @param {string} val The value to be encoded. + * + * @returns {string} The encoded value. + */ +function encode(val) { + return encodeURIComponent(val). + replace(/%3A/gi, ':'). + replace(/%24/g, '$'). + replace(/%2C/gi, ','). + replace(/%20/g, '+'). + replace(/%5B/gi, '['). + replace(/%5D/gi, ']'); +} + +/** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @param {?(object|Function)} options + * + * @returns {string} The formatted url + */ +export default function buildURL(url, params, options) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + + const _encode = options && options.encode || encode; + + if (utils.isFunction(options)) { + options = { + serialize: options + }; + } + + const serializeFn = options && options.serialize; + + let serializedParams; + + if (serializeFn) { + serializedParams = serializeFn(params, options); + } else { + serializedParams = utils.isURLSearchParams(params) ? + params.toString() : + new AxiosURLSearchParams(params, options).toString(_encode); + } + + if (serializedParams) { + const hashmarkIndex = url.indexOf("#"); + + if (hashmarkIndex !== -1) { + url = url.slice(0, hashmarkIndex); + } + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + + return url; +} diff --git a/node_modules/axios/lib/helpers/callbackify.js b/node_modules/axios/lib/helpers/callbackify.js new file mode 100644 index 0000000..4603bad --- /dev/null +++ b/node_modules/axios/lib/helpers/callbackify.js @@ -0,0 +1,16 @@ +import utils from "../utils.js"; + +const callbackify = (fn, reducer) => { + return utils.isAsyncFn(fn) ? function (...args) { + const cb = args.pop(); + fn.apply(this, args).then((value) => { + try { + reducer ? cb(null, ...reducer(value)) : cb(null, value); + } catch (err) { + cb(err); + } + }, cb); + } : fn; +} + +export default callbackify; diff --git a/node_modules/axios/lib/helpers/combineURLs.js b/node_modules/axios/lib/helpers/combineURLs.js new file mode 100644 index 0000000..9f04f02 --- /dev/null +++ b/node_modules/axios/lib/helpers/combineURLs.js @@ -0,0 +1,15 @@ +'use strict'; + +/** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * + * @returns {string} The combined URL + */ +export default function combineURLs(baseURL, relativeURL) { + return relativeURL + ? baseURL.replace(/\/?\/$/, '') + '/' + relativeURL.replace(/^\/+/, '') + : baseURL; +} diff --git a/node_modules/axios/lib/helpers/composeSignals.js b/node_modules/axios/lib/helpers/composeSignals.js new file mode 100644 index 0000000..84087c8 --- /dev/null +++ b/node_modules/axios/lib/helpers/composeSignals.js @@ -0,0 +1,48 @@ +import CanceledError from "../cancel/CanceledError.js"; +import AxiosError from "../core/AxiosError.js"; +import utils from '../utils.js'; + +const composeSignals = (signals, timeout) => { + const {length} = (signals = signals ? signals.filter(Boolean) : []); + + if (timeout || length) { + let controller = new AbortController(); + + let aborted; + + const onabort = function (reason) { + if (!aborted) { + aborted = true; + unsubscribe(); + const err = reason instanceof Error ? reason : this.reason; + controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err)); + } + } + + let timer = timeout && setTimeout(() => { + timer = null; + onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT)) + }, timeout) + + const unsubscribe = () => { + if (signals) { + timer && clearTimeout(timer); + timer = null; + signals.forEach(signal => { + signal.unsubscribe ? signal.unsubscribe(onabort) : signal.removeEventListener('abort', onabort); + }); + signals = null; + } + } + + signals.forEach((signal) => signal.addEventListener('abort', onabort)); + + const {signal} = controller; + + signal.unsubscribe = () => utils.asap(unsubscribe); + + return signal; + } +} + +export default composeSignals; diff --git a/node_modules/axios/lib/helpers/cookies.js b/node_modules/axios/lib/helpers/cookies.js new file mode 100644 index 0000000..d039ac4 --- /dev/null +++ b/node_modules/axios/lib/helpers/cookies.js @@ -0,0 +1,42 @@ +import utils from './../utils.js'; +import platform from '../platform/index.js'; + +export default platform.hasStandardBrowserEnv ? + + // Standard browser envs support document.cookie + { + write(name, value, expires, path, domain, secure) { + const cookie = [name + '=' + encodeURIComponent(value)]; + + utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString()); + + utils.isString(path) && cookie.push('path=' + path); + + utils.isString(domain) && cookie.push('domain=' + domain); + + secure === true && cookie.push('secure'); + + document.cookie = cookie.join('; '); + }, + + read(name) { + const match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return (match ? decodeURIComponent(match[3]) : null); + }, + + remove(name) { + this.write(name, '', Date.now() - 86400000); + } + } + + : + + // Non-standard browser env (web workers, react-native) lack needed support. + { + write() {}, + read() { + return null; + }, + remove() {} + }; + diff --git a/node_modules/axios/lib/helpers/deprecatedMethod.js b/node_modules/axios/lib/helpers/deprecatedMethod.js new file mode 100644 index 0000000..9e8fae6 --- /dev/null +++ b/node_modules/axios/lib/helpers/deprecatedMethod.js @@ -0,0 +1,26 @@ +'use strict'; + +/*eslint no-console:0*/ + +/** + * Supply a warning to the developer that a method they are using + * has been deprecated. + * + * @param {string} method The name of the deprecated method + * @param {string} [instead] The alternate method to use if applicable + * @param {string} [docs] The documentation URL to get further details + * + * @returns {void} + */ +export default function deprecatedMethod(method, instead, docs) { + try { + console.warn( + 'DEPRECATED method `' + method + '`.' + + (instead ? ' Use `' + instead + '` instead.' : '') + + ' This method will be removed in a future release.'); + + if (docs) { + console.warn('For more information about usage see ' + docs); + } + } catch (e) { /* Ignore */ } +} diff --git a/node_modules/axios/lib/helpers/formDataToJSON.js b/node_modules/axios/lib/helpers/formDataToJSON.js new file mode 100644 index 0000000..906ce60 --- /dev/null +++ b/node_modules/axios/lib/helpers/formDataToJSON.js @@ -0,0 +1,95 @@ +'use strict'; + +import utils from '../utils.js'; + +/** + * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z'] + * + * @param {string} name - The name of the property to get. + * + * @returns An array of strings. + */ +function parsePropPath(name) { + // foo[x][y][z] + // foo.x.y.z + // foo-x-y-z + // foo x y z + return utils.matchAll(/\w+|\[(\w*)]/g, name).map(match => { + return match[0] === '[]' ? '' : match[1] || match[0]; + }); +} + +/** + * Convert an array to an object. + * + * @param {Array} arr - The array to convert to an object. + * + * @returns An object with the same keys and values as the array. + */ +function arrayToObject(arr) { + const obj = {}; + const keys = Object.keys(arr); + let i; + const len = keys.length; + let key; + for (i = 0; i < len; i++) { + key = keys[i]; + obj[key] = arr[key]; + } + return obj; +} + +/** + * It takes a FormData object and returns a JavaScript object + * + * @param {string} formData The FormData object to convert to JSON. + * + * @returns {Object | null} The converted object. + */ +function formDataToJSON(formData) { + function buildPath(path, value, target, index) { + let name = path[index++]; + + if (name === '__proto__') return true; + + const isNumericKey = Number.isFinite(+name); + const isLast = index >= path.length; + name = !name && utils.isArray(target) ? target.length : name; + + if (isLast) { + if (utils.hasOwnProp(target, name)) { + target[name] = [target[name], value]; + } else { + target[name] = value; + } + + return !isNumericKey; + } + + if (!target[name] || !utils.isObject(target[name])) { + target[name] = []; + } + + const result = buildPath(path, value, target[name], index); + + if (result && utils.isArray(target[name])) { + target[name] = arrayToObject(target[name]); + } + + return !isNumericKey; + } + + if (utils.isFormData(formData) && utils.isFunction(formData.entries)) { + const obj = {}; + + utils.forEachEntry(formData, (name, value) => { + buildPath(parsePropPath(name), value, obj, 0); + }); + + return obj; + } + + return null; +} + +export default formDataToJSON; diff --git a/node_modules/axios/lib/helpers/formDataToStream.js b/node_modules/axios/lib/helpers/formDataToStream.js new file mode 100644 index 0000000..afc6174 --- /dev/null +++ b/node_modules/axios/lib/helpers/formDataToStream.js @@ -0,0 +1,112 @@ +import util from 'util'; +import {Readable} from 'stream'; +import utils from "../utils.js"; +import readBlob from "./readBlob.js"; +import platform from "../platform/index.js"; + +const BOUNDARY_ALPHABET = platform.ALPHABET.ALPHA_DIGIT + '-_'; + +const textEncoder = typeof TextEncoder === 'function' ? new TextEncoder() : new util.TextEncoder(); + +const CRLF = '\r\n'; +const CRLF_BYTES = textEncoder.encode(CRLF); +const CRLF_BYTES_COUNT = 2; + +class FormDataPart { + constructor(name, value) { + const {escapeName} = this.constructor; + const isStringValue = utils.isString(value); + + let headers = `Content-Disposition: form-data; name="${escapeName(name)}"${ + !isStringValue && value.name ? `; filename="${escapeName(value.name)}"` : '' + }${CRLF}`; + + if (isStringValue) { + value = textEncoder.encode(String(value).replace(/\r?\n|\r\n?/g, CRLF)); + } else { + headers += `Content-Type: ${value.type || "application/octet-stream"}${CRLF}` + } + + this.headers = textEncoder.encode(headers + CRLF); + + this.contentLength = isStringValue ? value.byteLength : value.size; + + this.size = this.headers.byteLength + this.contentLength + CRLF_BYTES_COUNT; + + this.name = name; + this.value = value; + } + + async *encode(){ + yield this.headers; + + const {value} = this; + + if(utils.isTypedArray(value)) { + yield value; + } else { + yield* readBlob(value); + } + + yield CRLF_BYTES; + } + + static escapeName(name) { + return String(name).replace(/[\r\n"]/g, (match) => ({ + '\r' : '%0D', + '\n' : '%0A', + '"' : '%22', + }[match])); + } +} + +const formDataToStream = (form, headersHandler, options) => { + const { + tag = 'form-data-boundary', + size = 25, + boundary = tag + '-' + platform.generateString(size, BOUNDARY_ALPHABET) + } = options || {}; + + if(!utils.isFormData(form)) { + throw TypeError('FormData instance required'); + } + + if (boundary.length < 1 || boundary.length > 70) { + throw Error('boundary must be 10-70 characters long') + } + + const boundaryBytes = textEncoder.encode('--' + boundary + CRLF); + const footerBytes = textEncoder.encode('--' + boundary + '--' + CRLF); + let contentLength = footerBytes.byteLength; + + const parts = Array.from(form.entries()).map(([name, value]) => { + const part = new FormDataPart(name, value); + contentLength += part.size; + return part; + }); + + contentLength += boundaryBytes.byteLength * parts.length; + + contentLength = utils.toFiniteNumber(contentLength); + + const computedHeaders = { + 'Content-Type': `multipart/form-data; boundary=${boundary}` + } + + if (Number.isFinite(contentLength)) { + computedHeaders['Content-Length'] = contentLength; + } + + headersHandler && headersHandler(computedHeaders); + + return Readable.from((async function *() { + for(const part of parts) { + yield boundaryBytes; + yield* part.encode(); + } + + yield footerBytes; + })()); +}; + +export default formDataToStream; diff --git a/node_modules/axios/lib/helpers/fromDataURI.js b/node_modules/axios/lib/helpers/fromDataURI.js new file mode 100644 index 0000000..eb71d3f --- /dev/null +++ b/node_modules/axios/lib/helpers/fromDataURI.js @@ -0,0 +1,53 @@ +'use strict'; + +import AxiosError from '../core/AxiosError.js'; +import parseProtocol from './parseProtocol.js'; +import platform from '../platform/index.js'; + +const DATA_URL_PATTERN = /^(?:([^;]+);)?(?:[^;]+;)?(base64|),([\s\S]*)$/; + +/** + * Parse data uri to a Buffer or Blob + * + * @param {String} uri + * @param {?Boolean} asBlob + * @param {?Object} options + * @param {?Function} options.Blob + * + * @returns {Buffer|Blob} + */ +export default function fromDataURI(uri, asBlob, options) { + const _Blob = options && options.Blob || platform.classes.Blob; + const protocol = parseProtocol(uri); + + if (asBlob === undefined && _Blob) { + asBlob = true; + } + + if (protocol === 'data') { + uri = protocol.length ? uri.slice(protocol.length + 1) : uri; + + const match = DATA_URL_PATTERN.exec(uri); + + if (!match) { + throw new AxiosError('Invalid URL', AxiosError.ERR_INVALID_URL); + } + + const mime = match[1]; + const isBase64 = match[2]; + const body = match[3]; + const buffer = Buffer.from(decodeURIComponent(body), isBase64 ? 'base64' : 'utf8'); + + if (asBlob) { + if (!_Blob) { + throw new AxiosError('Blob is not supported', AxiosError.ERR_NOT_SUPPORT); + } + + return new _Blob([buffer], {type: mime}); + } + + return buffer; + } + + throw new AxiosError('Unsupported protocol ' + protocol, AxiosError.ERR_NOT_SUPPORT); +} diff --git a/node_modules/axios/lib/helpers/isAbsoluteURL.js b/node_modules/axios/lib/helpers/isAbsoluteURL.js new file mode 100644 index 0000000..4747a45 --- /dev/null +++ b/node_modules/axios/lib/helpers/isAbsoluteURL.js @@ -0,0 +1,15 @@ +'use strict'; + +/** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ +export default function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url); +} diff --git a/node_modules/axios/lib/helpers/isAxiosError.js b/node_modules/axios/lib/helpers/isAxiosError.js new file mode 100644 index 0000000..da6cd63 --- /dev/null +++ b/node_modules/axios/lib/helpers/isAxiosError.js @@ -0,0 +1,14 @@ +'use strict'; + +import utils from './../utils.js'; + +/** + * Determines whether the payload is an error thrown by Axios + * + * @param {*} payload The value to test + * + * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false + */ +export default function isAxiosError(payload) { + return utils.isObject(payload) && (payload.isAxiosError === true); +} diff --git a/node_modules/axios/lib/helpers/isURLSameOrigin.js b/node_modules/axios/lib/helpers/isURLSameOrigin.js new file mode 100644 index 0000000..6a92aa1 --- /dev/null +++ b/node_modules/axios/lib/helpers/isURLSameOrigin.js @@ -0,0 +1,14 @@ +import platform from '../platform/index.js'; + +export default platform.hasStandardBrowserEnv ? ((origin, isMSIE) => (url) => { + url = new URL(url, platform.origin); + + return ( + origin.protocol === url.protocol && + origin.host === url.host && + (isMSIE || origin.port === url.port) + ); +})( + new URL(platform.origin), + platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent) +) : () => true; diff --git a/node_modules/axios/lib/helpers/null.js b/node_modules/axios/lib/helpers/null.js new file mode 100644 index 0000000..b9f82c4 --- /dev/null +++ b/node_modules/axios/lib/helpers/null.js @@ -0,0 +1,2 @@ +// eslint-disable-next-line strict +export default null; diff --git a/node_modules/axios/lib/helpers/parseHeaders.js b/node_modules/axios/lib/helpers/parseHeaders.js new file mode 100644 index 0000000..50af948 --- /dev/null +++ b/node_modules/axios/lib/helpers/parseHeaders.js @@ -0,0 +1,55 @@ +'use strict'; + +import utils from './../utils.js'; + +// RawAxiosHeaders whose duplicates are ignored by node +// c.f. https://nodejs.org/api/http.html#http_message_headers +const ignoreDuplicateOf = utils.toObjectSet([ + 'age', 'authorization', 'content-length', 'content-type', 'etag', + 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', + 'last-modified', 'location', 'max-forwards', 'proxy-authorization', + 'referer', 'retry-after', 'user-agent' +]); + +/** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} rawHeaders Headers needing to be parsed + * + * @returns {Object} Headers parsed into an object + */ +export default rawHeaders => { + const parsed = {}; + let key; + let val; + let i; + + rawHeaders && rawHeaders.split('\n').forEach(function parser(line) { + i = line.indexOf(':'); + key = line.substring(0, i).trim().toLowerCase(); + val = line.substring(i + 1).trim(); + + if (!key || (parsed[key] && ignoreDuplicateOf[key])) { + return; + } + + if (key === 'set-cookie') { + if (parsed[key]) { + parsed[key].push(val); + } else { + parsed[key] = [val]; + } + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + }); + + return parsed; +}; diff --git a/node_modules/axios/lib/helpers/parseProtocol.js b/node_modules/axios/lib/helpers/parseProtocol.js new file mode 100644 index 0000000..586ec96 --- /dev/null +++ b/node_modules/axios/lib/helpers/parseProtocol.js @@ -0,0 +1,6 @@ +'use strict'; + +export default function parseProtocol(url) { + const match = /^([-+\w]{1,25})(:?\/\/|:)/.exec(url); + return match && match[1] || ''; +} diff --git a/node_modules/axios/lib/helpers/progressEventReducer.js b/node_modules/axios/lib/helpers/progressEventReducer.js new file mode 100644 index 0000000..ff601cc --- /dev/null +++ b/node_modules/axios/lib/helpers/progressEventReducer.js @@ -0,0 +1,44 @@ +import speedometer from "./speedometer.js"; +import throttle from "./throttle.js"; +import utils from "../utils.js"; + +export const progressEventReducer = (listener, isDownloadStream, freq = 3) => { + let bytesNotified = 0; + const _speedometer = speedometer(50, 250); + + return throttle(e => { + const loaded = e.loaded; + const total = e.lengthComputable ? e.total : undefined; + const progressBytes = loaded - bytesNotified; + const rate = _speedometer(progressBytes); + const inRange = loaded <= total; + + bytesNotified = loaded; + + const data = { + loaded, + total, + progress: total ? (loaded / total) : undefined, + bytes: progressBytes, + rate: rate ? rate : undefined, + estimated: rate && total && inRange ? (total - loaded) / rate : undefined, + event: e, + lengthComputable: total != null, + [isDownloadStream ? 'download' : 'upload']: true + }; + + listener(data); + }, freq); +} + +export const progressEventDecorator = (total, throttled) => { + const lengthComputable = total != null; + + return [(loaded) => throttled[0]({ + lengthComputable, + total, + loaded + }), throttled[1]]; +} + +export const asyncDecorator = (fn) => (...args) => utils.asap(() => fn(...args)); diff --git a/node_modules/axios/lib/helpers/readBlob.js b/node_modules/axios/lib/helpers/readBlob.js new file mode 100644 index 0000000..6de748e --- /dev/null +++ b/node_modules/axios/lib/helpers/readBlob.js @@ -0,0 +1,15 @@ +const {asyncIterator} = Symbol; + +const readBlob = async function* (blob) { + if (blob.stream) { + yield* blob.stream() + } else if (blob.arrayBuffer) { + yield await blob.arrayBuffer() + } else if (blob[asyncIterator]) { + yield* blob[asyncIterator](); + } else { + yield blob; + } +} + +export default readBlob; diff --git a/node_modules/axios/lib/helpers/resolveConfig.js b/node_modules/axios/lib/helpers/resolveConfig.js new file mode 100644 index 0000000..7b16882 --- /dev/null +++ b/node_modules/axios/lib/helpers/resolveConfig.js @@ -0,0 +1,57 @@ +import platform from "../platform/index.js"; +import utils from "../utils.js"; +import isURLSameOrigin from "./isURLSameOrigin.js"; +import cookies from "./cookies.js"; +import buildFullPath from "../core/buildFullPath.js"; +import mergeConfig from "../core/mergeConfig.js"; +import AxiosHeaders from "../core/AxiosHeaders.js"; +import buildURL from "./buildURL.js"; + +export default (config) => { + const newConfig = mergeConfig({}, config); + + let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig; + + newConfig.headers = headers = AxiosHeaders.from(headers); + + newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url, newConfig.allowAbsoluteUrls), config.params, config.paramsSerializer); + + // HTTP basic authentication + if (auth) { + headers.set('Authorization', 'Basic ' + + btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : '')) + ); + } + + let contentType; + + if (utils.isFormData(data)) { + if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) { + headers.setContentType(undefined); // Let the browser set it + } else if ((contentType = headers.getContentType()) !== false) { + // fix semicolon duplication issue for ReactNative FormData implementation + const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : []; + headers.setContentType([type || 'multipart/form-data', ...tokens].join('; ')); + } + } + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + + if (platform.hasStandardBrowserEnv) { + withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig)); + + if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) { + // Add xsrf header + const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName); + + if (xsrfValue) { + headers.set(xsrfHeaderName, xsrfValue); + } + } + } + + return newConfig; +} + diff --git a/node_modules/axios/lib/helpers/speedometer.js b/node_modules/axios/lib/helpers/speedometer.js new file mode 100644 index 0000000..3b3c666 --- /dev/null +++ b/node_modules/axios/lib/helpers/speedometer.js @@ -0,0 +1,55 @@ +'use strict'; + +/** + * Calculate data maxRate + * @param {Number} [samplesCount= 10] + * @param {Number} [min= 1000] + * @returns {Function} + */ +function speedometer(samplesCount, min) { + samplesCount = samplesCount || 10; + const bytes = new Array(samplesCount); + const timestamps = new Array(samplesCount); + let head = 0; + let tail = 0; + let firstSampleTS; + + min = min !== undefined ? min : 1000; + + return function push(chunkLength) { + const now = Date.now(); + + const startedAt = timestamps[tail]; + + if (!firstSampleTS) { + firstSampleTS = now; + } + + bytes[head] = chunkLength; + timestamps[head] = now; + + let i = tail; + let bytesCount = 0; + + while (i !== head) { + bytesCount += bytes[i++]; + i = i % samplesCount; + } + + head = (head + 1) % samplesCount; + + if (head === tail) { + tail = (tail + 1) % samplesCount; + } + + if (now - firstSampleTS < min) { + return; + } + + const passed = startedAt && now - startedAt; + + return passed ? Math.round(bytesCount * 1000 / passed) : undefined; + }; +} + +export default speedometer; diff --git a/node_modules/axios/lib/helpers/spread.js b/node_modules/axios/lib/helpers/spread.js new file mode 100644 index 0000000..13479cb --- /dev/null +++ b/node_modules/axios/lib/helpers/spread.js @@ -0,0 +1,28 @@ +'use strict'; + +/** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * + * @returns {Function} + */ +export default function spread(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; +} diff --git a/node_modules/axios/lib/helpers/throttle.js b/node_modules/axios/lib/helpers/throttle.js new file mode 100644 index 0000000..e256272 --- /dev/null +++ b/node_modules/axios/lib/helpers/throttle.js @@ -0,0 +1,44 @@ +/** + * Throttle decorator + * @param {Function} fn + * @param {Number} freq + * @return {Function} + */ +function throttle(fn, freq) { + let timestamp = 0; + let threshold = 1000 / freq; + let lastArgs; + let timer; + + const invoke = (args, now = Date.now()) => { + timestamp = now; + lastArgs = null; + if (timer) { + clearTimeout(timer); + timer = null; + } + fn.apply(null, args); + } + + const throttled = (...args) => { + const now = Date.now(); + const passed = now - timestamp; + if ( passed >= threshold) { + invoke(args, now); + } else { + lastArgs = args; + if (!timer) { + timer = setTimeout(() => { + timer = null; + invoke(lastArgs) + }, threshold - passed); + } + } + } + + const flush = () => lastArgs && invoke(lastArgs); + + return [throttled, flush]; +} + +export default throttle; diff --git a/node_modules/axios/lib/helpers/toFormData.js b/node_modules/axios/lib/helpers/toFormData.js new file mode 100644 index 0000000..ec47d8c --- /dev/null +++ b/node_modules/axios/lib/helpers/toFormData.js @@ -0,0 +1,223 @@ +'use strict'; + +import utils from '../utils.js'; +import AxiosError from '../core/AxiosError.js'; +// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored +import PlatformFormData from '../platform/node/classes/FormData.js'; + +/** + * Determines if the given thing is a array or js object. + * + * @param {string} thing - The object or array to be visited. + * + * @returns {boolean} + */ +function isVisitable(thing) { + return utils.isPlainObject(thing) || utils.isArray(thing); +} + +/** + * It removes the brackets from the end of a string + * + * @param {string} key - The key of the parameter. + * + * @returns {string} the key without the brackets. + */ +function removeBrackets(key) { + return utils.endsWith(key, '[]') ? key.slice(0, -2) : key; +} + +/** + * It takes a path, a key, and a boolean, and returns a string + * + * @param {string} path - The path to the current key. + * @param {string} key - The key of the current object being iterated over. + * @param {string} dots - If true, the key will be rendered with dots instead of brackets. + * + * @returns {string} The path to the current key. + */ +function renderKey(path, key, dots) { + if (!path) return key; + return path.concat(key).map(function each(token, i) { + // eslint-disable-next-line no-param-reassign + token = removeBrackets(token); + return !dots && i ? '[' + token + ']' : token; + }).join(dots ? '.' : ''); +} + +/** + * If the array is an array and none of its elements are visitable, then it's a flat array. + * + * @param {Array} arr - The array to check + * + * @returns {boolean} + */ +function isFlatArray(arr) { + return utils.isArray(arr) && !arr.some(isVisitable); +} + +const predicates = utils.toFlatObject(utils, {}, null, function filter(prop) { + return /^is[A-Z]/.test(prop); +}); + +/** + * Convert a data object to FormData + * + * @param {Object} obj + * @param {?Object} [formData] + * @param {?Object} [options] + * @param {Function} [options.visitor] + * @param {Boolean} [options.metaTokens = true] + * @param {Boolean} [options.dots = false] + * @param {?Boolean} [options.indexes = false] + * + * @returns {Object} + **/ + +/** + * It converts an object into a FormData object + * + * @param {Object} obj - The object to convert to form data. + * @param {string} formData - The FormData object to append to. + * @param {Object} options + * + * @returns + */ +function toFormData(obj, formData, options) { + if (!utils.isObject(obj)) { + throw new TypeError('target must be an object'); + } + + // eslint-disable-next-line no-param-reassign + formData = formData || new (PlatformFormData || FormData)(); + + // eslint-disable-next-line no-param-reassign + options = utils.toFlatObject(options, { + metaTokens: true, + dots: false, + indexes: false + }, false, function defined(option, source) { + // eslint-disable-next-line no-eq-null,eqeqeq + return !utils.isUndefined(source[option]); + }); + + const metaTokens = options.metaTokens; + // eslint-disable-next-line no-use-before-define + const visitor = options.visitor || defaultVisitor; + const dots = options.dots; + const indexes = options.indexes; + const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob; + const useBlob = _Blob && utils.isSpecCompliantForm(formData); + + if (!utils.isFunction(visitor)) { + throw new TypeError('visitor must be a function'); + } + + function convertValue(value) { + if (value === null) return ''; + + if (utils.isDate(value)) { + return value.toISOString(); + } + + if (utils.isBoolean(value)) { + return value.toString(); + } + + if (!useBlob && utils.isBlob(value)) { + throw new AxiosError('Blob is not supported. Use a Buffer instead.'); + } + + if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) { + return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value); + } + + return value; + } + + /** + * Default visitor. + * + * @param {*} value + * @param {String|Number} key + * @param {Array} path + * @this {FormData} + * + * @returns {boolean} return true to visit the each prop of the value recursively + */ + function defaultVisitor(value, key, path) { + let arr = value; + + if (value && !path && typeof value === 'object') { + if (utils.endsWith(key, '{}')) { + // eslint-disable-next-line no-param-reassign + key = metaTokens ? key : key.slice(0, -2); + // eslint-disable-next-line no-param-reassign + value = JSON.stringify(value); + } else if ( + (utils.isArray(value) && isFlatArray(value)) || + ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value)) + )) { + // eslint-disable-next-line no-param-reassign + key = removeBrackets(key); + + arr.forEach(function each(el, index) { + !(utils.isUndefined(el) || el === null) && formData.append( + // eslint-disable-next-line no-nested-ternary + indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'), + convertValue(el) + ); + }); + return false; + } + } + + if (isVisitable(value)) { + return true; + } + + formData.append(renderKey(path, key, dots), convertValue(value)); + + return false; + } + + const stack = []; + + const exposedHelpers = Object.assign(predicates, { + defaultVisitor, + convertValue, + isVisitable + }); + + function build(value, path) { + if (utils.isUndefined(value)) return; + + if (stack.indexOf(value) !== -1) { + throw Error('Circular reference detected in ' + path.join('.')); + } + + stack.push(value); + + utils.forEach(value, function each(el, key) { + const result = !(utils.isUndefined(el) || el === null) && visitor.call( + formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers + ); + + if (result === true) { + build(el, path ? path.concat(key) : [key]); + } + }); + + stack.pop(); + } + + if (!utils.isObject(obj)) { + throw new TypeError('data must be an object'); + } + + build(obj); + + return formData; +} + +export default toFormData; diff --git a/node_modules/axios/lib/helpers/toURLEncodedForm.js b/node_modules/axios/lib/helpers/toURLEncodedForm.js new file mode 100644 index 0000000..988a38a --- /dev/null +++ b/node_modules/axios/lib/helpers/toURLEncodedForm.js @@ -0,0 +1,18 @@ +'use strict'; + +import utils from '../utils.js'; +import toFormData from './toFormData.js'; +import platform from '../platform/index.js'; + +export default function toURLEncodedForm(data, options) { + return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({ + visitor: function(value, key, path, helpers) { + if (platform.isNode && utils.isBuffer(value)) { + this.append(key, value.toString('base64')); + return false; + } + + return helpers.defaultVisitor.apply(this, arguments); + } + }, options)); +} diff --git a/node_modules/axios/lib/helpers/trackStream.js b/node_modules/axios/lib/helpers/trackStream.js new file mode 100644 index 0000000..95d6008 --- /dev/null +++ b/node_modules/axios/lib/helpers/trackStream.js @@ -0,0 +1,87 @@ + +export const streamChunk = function* (chunk, chunkSize) { + let len = chunk.byteLength; + + if (!chunkSize || len < chunkSize) { + yield chunk; + return; + } + + let pos = 0; + let end; + + while (pos < len) { + end = pos + chunkSize; + yield chunk.slice(pos, end); + pos = end; + } +} + +export const readBytes = async function* (iterable, chunkSize) { + for await (const chunk of readStream(iterable)) { + yield* streamChunk(chunk, chunkSize); + } +} + +const readStream = async function* (stream) { + if (stream[Symbol.asyncIterator]) { + yield* stream; + return; + } + + const reader = stream.getReader(); + try { + for (;;) { + const {done, value} = await reader.read(); + if (done) { + break; + } + yield value; + } + } finally { + await reader.cancel(); + } +} + +export const trackStream = (stream, chunkSize, onProgress, onFinish) => { + const iterator = readBytes(stream, chunkSize); + + let bytes = 0; + let done; + let _onFinish = (e) => { + if (!done) { + done = true; + onFinish && onFinish(e); + } + } + + return new ReadableStream({ + async pull(controller) { + try { + const {done, value} = await iterator.next(); + + if (done) { + _onFinish(); + controller.close(); + return; + } + + let len = value.byteLength; + if (onProgress) { + let loadedBytes = bytes += len; + onProgress(loadedBytes); + } + controller.enqueue(new Uint8Array(value)); + } catch (err) { + _onFinish(err); + throw err; + } + }, + cancel(reason) { + _onFinish(reason); + return iterator.return(); + } + }, { + highWaterMark: 2 + }) +} diff --git a/node_modules/axios/lib/helpers/validator.js b/node_modules/axios/lib/helpers/validator.js new file mode 100644 index 0000000..1270568 --- /dev/null +++ b/node_modules/axios/lib/helpers/validator.js @@ -0,0 +1,99 @@ +'use strict'; + +import {VERSION} from '../env/data.js'; +import AxiosError from '../core/AxiosError.js'; + +const validators = {}; + +// eslint-disable-next-line func-names +['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => { + validators[type] = function validator(thing) { + return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type; + }; +}); + +const deprecatedWarnings = {}; + +/** + * Transitional option validator + * + * @param {function|boolean?} validator - set to false if the transitional option has been removed + * @param {string?} version - deprecated version / removed since version + * @param {string?} message - some message with additional info + * + * @returns {function} + */ +validators.transitional = function transitional(validator, version, message) { + function formatMessage(opt, desc) { + return '[Axios v' + VERSION + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : ''); + } + + // eslint-disable-next-line func-names + return (value, opt, opts) => { + if (validator === false) { + throw new AxiosError( + formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')), + AxiosError.ERR_DEPRECATED + ); + } + + if (version && !deprecatedWarnings[opt]) { + deprecatedWarnings[opt] = true; + // eslint-disable-next-line no-console + console.warn( + formatMessage( + opt, + ' has been deprecated since v' + version + ' and will be removed in the near future' + ) + ); + } + + return validator ? validator(value, opt, opts) : true; + }; +}; + +validators.spelling = function spelling(correctSpelling) { + return (value, opt) => { + // eslint-disable-next-line no-console + console.warn(`${opt} is likely a misspelling of ${correctSpelling}`); + return true; + } +}; + +/** + * Assert object's properties type + * + * @param {object} options + * @param {object} schema + * @param {boolean?} allowUnknown + * + * @returns {object} + */ + +function assertOptions(options, schema, allowUnknown) { + if (typeof options !== 'object') { + throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE); + } + const keys = Object.keys(options); + let i = keys.length; + while (i-- > 0) { + const opt = keys[i]; + const validator = schema[opt]; + if (validator) { + const value = options[opt]; + const result = value === undefined || validator(value, opt, options); + if (result !== true) { + throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE); + } + continue; + } + if (allowUnknown !== true) { + throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION); + } + } +} + +export default { + assertOptions, + validators +}; diff --git a/node_modules/axios/lib/platform/browser/classes/Blob.js b/node_modules/axios/lib/platform/browser/classes/Blob.js new file mode 100644 index 0000000..6c506c4 --- /dev/null +++ b/node_modules/axios/lib/platform/browser/classes/Blob.js @@ -0,0 +1,3 @@ +'use strict' + +export default typeof Blob !== 'undefined' ? Blob : null diff --git a/node_modules/axios/lib/platform/browser/classes/FormData.js b/node_modules/axios/lib/platform/browser/classes/FormData.js new file mode 100644 index 0000000..f36d31b --- /dev/null +++ b/node_modules/axios/lib/platform/browser/classes/FormData.js @@ -0,0 +1,3 @@ +'use strict'; + +export default typeof FormData !== 'undefined' ? FormData : null; diff --git a/node_modules/axios/lib/platform/browser/classes/URLSearchParams.js b/node_modules/axios/lib/platform/browser/classes/URLSearchParams.js new file mode 100644 index 0000000..b7dae95 --- /dev/null +++ b/node_modules/axios/lib/platform/browser/classes/URLSearchParams.js @@ -0,0 +1,4 @@ +'use strict'; + +import AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js'; +export default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams; diff --git a/node_modules/axios/lib/platform/browser/index.js b/node_modules/axios/lib/platform/browser/index.js new file mode 100644 index 0000000..08c206f --- /dev/null +++ b/node_modules/axios/lib/platform/browser/index.js @@ -0,0 +1,13 @@ +import URLSearchParams from './classes/URLSearchParams.js' +import FormData from './classes/FormData.js' +import Blob from './classes/Blob.js' + +export default { + isBrowser: true, + classes: { + URLSearchParams, + FormData, + Blob + }, + protocols: ['http', 'https', 'file', 'blob', 'url', 'data'] +}; diff --git a/node_modules/axios/lib/platform/common/utils.js b/node_modules/axios/lib/platform/common/utils.js new file mode 100644 index 0000000..52a3186 --- /dev/null +++ b/node_modules/axios/lib/platform/common/utils.js @@ -0,0 +1,51 @@ +const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined'; + +const _navigator = typeof navigator === 'object' && navigator || undefined; + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + * + * @returns {boolean} + */ +const hasStandardBrowserEnv = hasBrowserEnv && + (!_navigator || ['ReactNative', 'NativeScript', 'NS'].indexOf(_navigator.product) < 0); + +/** + * Determine if we're running in a standard browser webWorker environment + * + * Although the `isStandardBrowserEnv` method indicates that + * `allows axios to run in a web worker`, the WebWorker will still be + * filtered out due to its judgment standard + * `typeof window !== 'undefined' && typeof document !== 'undefined'`. + * This leads to a problem when axios post `FormData` in webWorker + */ +const hasStandardBrowserWebWorkerEnv = (() => { + return ( + typeof WorkerGlobalScope !== 'undefined' && + // eslint-disable-next-line no-undef + self instanceof WorkerGlobalScope && + typeof self.importScripts === 'function' + ); +})(); + +const origin = hasBrowserEnv && window.location.href || 'http://localhost'; + +export { + hasBrowserEnv, + hasStandardBrowserWebWorkerEnv, + hasStandardBrowserEnv, + _navigator as navigator, + origin +} diff --git a/node_modules/axios/lib/platform/index.js b/node_modules/axios/lib/platform/index.js new file mode 100644 index 0000000..860ba21 --- /dev/null +++ b/node_modules/axios/lib/platform/index.js @@ -0,0 +1,7 @@ +import platform from './node/index.js'; +import * as utils from './common/utils.js'; + +export default { + ...utils, + ...platform +} diff --git a/node_modules/axios/lib/platform/node/classes/FormData.js b/node_modules/axios/lib/platform/node/classes/FormData.js new file mode 100644 index 0000000..b07f947 --- /dev/null +++ b/node_modules/axios/lib/platform/node/classes/FormData.js @@ -0,0 +1,3 @@ +import FormData from 'form-data'; + +export default FormData; diff --git a/node_modules/axios/lib/platform/node/classes/URLSearchParams.js b/node_modules/axios/lib/platform/node/classes/URLSearchParams.js new file mode 100644 index 0000000..fba5842 --- /dev/null +++ b/node_modules/axios/lib/platform/node/classes/URLSearchParams.js @@ -0,0 +1,4 @@ +'use strict'; + +import url from 'url'; +export default url.URLSearchParams; diff --git a/node_modules/axios/lib/platform/node/index.js b/node_modules/axios/lib/platform/node/index.js new file mode 100644 index 0000000..cd1ca0c --- /dev/null +++ b/node_modules/axios/lib/platform/node/index.js @@ -0,0 +1,38 @@ +import crypto from 'crypto'; +import URLSearchParams from './classes/URLSearchParams.js' +import FormData from './classes/FormData.js' + +const ALPHA = 'abcdefghijklmnopqrstuvwxyz' + +const DIGIT = '0123456789'; + +const ALPHABET = { + DIGIT, + ALPHA, + ALPHA_DIGIT: ALPHA + ALPHA.toUpperCase() + DIGIT +} + +const generateString = (size = 16, alphabet = ALPHABET.ALPHA_DIGIT) => { + let str = ''; + const {length} = alphabet; + const randomValues = new Uint32Array(size); + crypto.randomFillSync(randomValues); + for (let i = 0; i < size; i++) { + str += alphabet[randomValues[i] % length]; + } + + return str; +} + + +export default { + isNode: true, + classes: { + URLSearchParams, + FormData, + Blob: typeof Blob !== 'undefined' && Blob || null + }, + ALPHABET, + generateString, + protocols: [ 'http', 'https', 'file', 'data' ] +}; diff --git a/node_modules/axios/lib/utils.js b/node_modules/axios/lib/utils.js new file mode 100644 index 0000000..a5ed039 --- /dev/null +++ b/node_modules/axios/lib/utils.js @@ -0,0 +1,744 @@ +'use strict'; + +import bind from './helpers/bind.js'; + +// utils is a library of generic helper functions non-specific to axios + +const {toString} = Object.prototype; +const {getPrototypeOf} = Object; +const {iterator, toStringTag} = Symbol; + +const kindOf = (cache => thing => { + const str = toString.call(thing); + return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase()); +})(Object.create(null)); + +const kindOfTest = (type) => { + type = type.toLowerCase(); + return (thing) => kindOf(thing) === type +} + +const typeOfTest = type => thing => typeof thing === type; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * + * @returns {boolean} True if value is an Array, otherwise false + */ +const {isArray} = Array; + +/** + * Determine if a value is undefined + * + * @param {*} val The value to test + * + * @returns {boolean} True if the value is undefined, otherwise false + */ +const isUndefined = typeOfTest('undefined'); + +/** + * Determine if a value is a Buffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Buffer, otherwise false + */ +function isBuffer(val) { + return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) + && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val); +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +const isArrayBuffer = kindOfTest('ArrayBuffer'); + + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + let result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (isArrayBuffer(val.buffer)); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a String, otherwise false + */ +const isString = typeOfTest('string'); + +/** + * Determine if a value is a Function + * + * @param {*} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +const isFunction = typeOfTest('function'); + +/** + * Determine if a value is a Number + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Number, otherwise false + */ +const isNumber = typeOfTest('number'); + +/** + * Determine if a value is an Object + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an Object, otherwise false + */ +const isObject = (thing) => thing !== null && typeof thing === 'object'; + +/** + * Determine if a value is a Boolean + * + * @param {*} thing The value to test + * @returns {boolean} True if value is a Boolean, otherwise false + */ +const isBoolean = thing => thing === true || thing === false; + +/** + * Determine if a value is a plain Object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a plain Object, otherwise false + */ +const isPlainObject = (val) => { + if (kindOf(val) !== 'object') { + return false; + } + + const prototype = getPrototypeOf(val); + return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val); +} + +/** + * Determine if a value is a Date + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Date, otherwise false + */ +const isDate = kindOfTest('Date'); + +/** + * Determine if a value is a File + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFile = kindOfTest('File'); + +/** + * Determine if a value is a Blob + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Blob, otherwise false + */ +const isBlob = kindOfTest('Blob'); + +/** + * Determine if a value is a FileList + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a File, otherwise false + */ +const isFileList = kindOfTest('FileList'); + +/** + * Determine if a value is a Stream + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a Stream, otherwise false + */ +const isStream = (val) => isObject(val) && isFunction(val.pipe); + +/** + * Determine if a value is a FormData + * + * @param {*} thing The value to test + * + * @returns {boolean} True if value is an FormData, otherwise false + */ +const isFormData = (thing) => { + let kind; + return thing && ( + (typeof FormData === 'function' && thing instanceof FormData) || ( + isFunction(thing.append) && ( + (kind = kindOf(thing)) === 'formdata' || + // detect form-data instance + (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]') + ) + ) + ) +} + +/** + * Determine if a value is a URLSearchParams object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +const isURLSearchParams = kindOfTest('URLSearchParams'); + +const [isReadableStream, isRequest, isResponse, isHeaders] = ['ReadableStream', 'Request', 'Response', 'Headers'].map(kindOfTest); + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * + * @returns {String} The String freed of excess whitespace + */ +const trim = (str) => str.trim ? + str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, ''); + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + * + * @param {Boolean} [allOwnKeys = false] + * @returns {any} + */ +function forEach(obj, fn, {allOwnKeys = false} = {}) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + let i; + let l; + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj); + const len = keys.length; + let key; + + for (i = 0; i < len; i++) { + key = keys[i]; + fn.call(null, obj[key], key, obj); + } + } +} + +function findKey(obj, key) { + key = key.toLowerCase(); + const keys = Object.keys(obj); + let i = keys.length; + let _key; + while (i-- > 0) { + _key = keys[i]; + if (key === _key.toLowerCase()) { + return _key; + } + } + return null; +} + +const _global = (() => { + /*eslint no-undef:0*/ + if (typeof globalThis !== "undefined") return globalThis; + return typeof self !== "undefined" ? self : (typeof window !== 'undefined' ? window : global) +})(); + +const isContextDefined = (context) => !isUndefined(context) && context !== _global; + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + const {caseless} = isContextDefined(this) && this || {}; + const result = {}; + const assignValue = (val, key) => { + const targetKey = caseless && findKey(result, key) || key; + if (isPlainObject(result[targetKey]) && isPlainObject(val)) { + result[targetKey] = merge(result[targetKey], val); + } else if (isPlainObject(val)) { + result[targetKey] = merge({}, val); + } else if (isArray(val)) { + result[targetKey] = val.slice(); + } else { + result[targetKey] = val; + } + } + + for (let i = 0, l = arguments.length; i < l; i++) { + arguments[i] && forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * + * @param {Boolean} [allOwnKeys] + * @returns {Object} The resulting value of object a + */ +const extend = (a, b, thisArg, {allOwnKeys}= {}) => { + forEach(b, (val, key) => { + if (thisArg && isFunction(val)) { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }, {allOwnKeys}); + return a; +} + +/** + * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) + * + * @param {string} content with BOM + * + * @returns {string} content value without BOM + */ +const stripBOM = (content) => { + if (content.charCodeAt(0) === 0xFEFF) { + content = content.slice(1); + } + return content; +} + +/** + * Inherit the prototype methods from one constructor into another + * @param {function} constructor + * @param {function} superConstructor + * @param {object} [props] + * @param {object} [descriptors] + * + * @returns {void} + */ +const inherits = (constructor, superConstructor, props, descriptors) => { + constructor.prototype = Object.create(superConstructor.prototype, descriptors); + constructor.prototype.constructor = constructor; + Object.defineProperty(constructor, 'super', { + value: superConstructor.prototype + }); + props && Object.assign(constructor.prototype, props); +} + +/** + * Resolve object with deep prototype chain to a flat object + * @param {Object} sourceObj source object + * @param {Object} [destObj] + * @param {Function|Boolean} [filter] + * @param {Function} [propFilter] + * + * @returns {Object} + */ +const toFlatObject = (sourceObj, destObj, filter, propFilter) => { + let props; + let i; + let prop; + const merged = {}; + + destObj = destObj || {}; + // eslint-disable-next-line no-eq-null,eqeqeq + if (sourceObj == null) return destObj; + + do { + props = Object.getOwnPropertyNames(sourceObj); + i = props.length; + while (i-- > 0) { + prop = props[i]; + if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) { + destObj[prop] = sourceObj[prop]; + merged[prop] = true; + } + } + sourceObj = filter !== false && getPrototypeOf(sourceObj); + } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype); + + return destObj; +} + +/** + * Determines whether a string ends with the characters of a specified string + * + * @param {String} str + * @param {String} searchString + * @param {Number} [position= 0] + * + * @returns {boolean} + */ +const endsWith = (str, searchString, position) => { + str = String(str); + if (position === undefined || position > str.length) { + position = str.length; + } + position -= searchString.length; + const lastIndex = str.indexOf(searchString, position); + return lastIndex !== -1 && lastIndex === position; +} + + +/** + * Returns new array from array like object or null if failed + * + * @param {*} [thing] + * + * @returns {?Array} + */ +const toArray = (thing) => { + if (!thing) return null; + if (isArray(thing)) return thing; + let i = thing.length; + if (!isNumber(i)) return null; + const arr = new Array(i); + while (i-- > 0) { + arr[i] = thing[i]; + } + return arr; +} + +/** + * Checking if the Uint8Array exists and if it does, it returns a function that checks if the + * thing passed in is an instance of Uint8Array + * + * @param {TypedArray} + * + * @returns {Array} + */ +// eslint-disable-next-line func-names +const isTypedArray = (TypedArray => { + // eslint-disable-next-line func-names + return thing => { + return TypedArray && thing instanceof TypedArray; + }; +})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array)); + +/** + * For each entry in the object, call the function with the key and value. + * + * @param {Object} obj - The object to iterate over. + * @param {Function} fn - The function to call for each entry. + * + * @returns {void} + */ +const forEachEntry = (obj, fn) => { + const generator = obj && obj[iterator]; + + const _iterator = generator.call(obj); + + let result; + + while ((result = _iterator.next()) && !result.done) { + const pair = result.value; + fn.call(obj, pair[0], pair[1]); + } +} + +/** + * It takes a regular expression and a string, and returns an array of all the matches + * + * @param {string} regExp - The regular expression to match against. + * @param {string} str - The string to search. + * + * @returns {Array} + */ +const matchAll = (regExp, str) => { + let matches; + const arr = []; + + while ((matches = regExp.exec(str)) !== null) { + arr.push(matches); + } + + return arr; +} + +/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */ +const isHTMLForm = kindOfTest('HTMLFormElement'); + +const toCamelCase = str => { + return str.toLowerCase().replace(/[-_\s]([a-z\d])(\w*)/g, + function replacer(m, p1, p2) { + return p1.toUpperCase() + p2; + } + ); +}; + +/* Creating a function that will check if an object has a property. */ +const hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype); + +/** + * Determine if a value is a RegExp object + * + * @param {*} val The value to test + * + * @returns {boolean} True if value is a RegExp object, otherwise false + */ +const isRegExp = kindOfTest('RegExp'); + +const reduceDescriptors = (obj, reducer) => { + const descriptors = Object.getOwnPropertyDescriptors(obj); + const reducedDescriptors = {}; + + forEach(descriptors, (descriptor, name) => { + let ret; + if ((ret = reducer(descriptor, name, obj)) !== false) { + reducedDescriptors[name] = ret || descriptor; + } + }); + + Object.defineProperties(obj, reducedDescriptors); +} + +/** + * Makes all methods read-only + * @param {Object} obj + */ + +const freezeMethods = (obj) => { + reduceDescriptors(obj, (descriptor, name) => { + // skip restricted props in strict mode + if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) { + return false; + } + + const value = obj[name]; + + if (!isFunction(value)) return; + + descriptor.enumerable = false; + + if ('writable' in descriptor) { + descriptor.writable = false; + return; + } + + if (!descriptor.set) { + descriptor.set = () => { + throw Error('Can not rewrite read-only method \'' + name + '\''); + }; + } + }); +} + +const toObjectSet = (arrayOrString, delimiter) => { + const obj = {}; + + const define = (arr) => { + arr.forEach(value => { + obj[value] = true; + }); + } + + isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter)); + + return obj; +} + +const noop = () => {} + +const toFiniteNumber = (value, defaultValue) => { + return value != null && Number.isFinite(value = +value) ? value : defaultValue; +} + +/** + * If the thing is a FormData object, return true, otherwise return false. + * + * @param {unknown} thing - The thing to check. + * + * @returns {boolean} + */ +function isSpecCompliantForm(thing) { + return !!(thing && isFunction(thing.append) && thing[toStringTag] === 'FormData' && thing[iterator]); +} + +const toJSONObject = (obj) => { + const stack = new Array(10); + + const visit = (source, i) => { + + if (isObject(source)) { + if (stack.indexOf(source) >= 0) { + return; + } + + if(!('toJSON' in source)) { + stack[i] = source; + const target = isArray(source) ? [] : {}; + + forEach(source, (value, key) => { + const reducedValue = visit(value, i + 1); + !isUndefined(reducedValue) && (target[key] = reducedValue); + }); + + stack[i] = undefined; + + return target; + } + } + + return source; + } + + return visit(obj, 0); +} + +const isAsyncFn = kindOfTest('AsyncFunction'); + +const isThenable = (thing) => + thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch); + +// original code +// https://github.com/DigitalBrainJS/AxiosPromise/blob/16deab13710ec09779922131f3fa5954320f83ab/lib/utils.js#L11-L34 + +const _setImmediate = ((setImmediateSupported, postMessageSupported) => { + if (setImmediateSupported) { + return setImmediate; + } + + return postMessageSupported ? ((token, callbacks) => { + _global.addEventListener("message", ({source, data}) => { + if (source === _global && data === token) { + callbacks.length && callbacks.shift()(); + } + }, false); + + return (cb) => { + callbacks.push(cb); + _global.postMessage(token, "*"); + } + })(`axios@${Math.random()}`, []) : (cb) => setTimeout(cb); +})( + typeof setImmediate === 'function', + isFunction(_global.postMessage) +); + +const asap = typeof queueMicrotask !== 'undefined' ? + queueMicrotask.bind(_global) : ( typeof process !== 'undefined' && process.nextTick || _setImmediate); + +// ********************* + + +const isIterable = (thing) => thing != null && isFunction(thing[iterator]); + + +export default { + isArray, + isArrayBuffer, + isBuffer, + isFormData, + isArrayBufferView, + isString, + isNumber, + isBoolean, + isObject, + isPlainObject, + isReadableStream, + isRequest, + isResponse, + isHeaders, + isUndefined, + isDate, + isFile, + isBlob, + isRegExp, + isFunction, + isStream, + isURLSearchParams, + isTypedArray, + isFileList, + forEach, + merge, + extend, + trim, + stripBOM, + inherits, + toFlatObject, + kindOf, + kindOfTest, + endsWith, + toArray, + forEachEntry, + matchAll, + isHTMLForm, + hasOwnProperty, + hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection + reduceDescriptors, + freezeMethods, + toObjectSet, + toCamelCase, + noop, + toFiniteNumber, + findKey, + global: _global, + isContextDefined, + isSpecCompliantForm, + toJSONObject, + isAsyncFn, + isThenable, + setImmediate: _setImmediate, + asap, + isIterable +}; diff --git a/node_modules/axios/package.json b/node_modules/axios/package.json new file mode 100644 index 0000000..3e15813 --- /dev/null +++ b/node_modules/axios/package.json @@ -0,0 +1,228 @@ +{ + "name": "axios", + "version": "1.10.0", + "description": "Promise based HTTP client for the browser and node.js", + "main": "index.js", + "exports": { + ".": { + "types": { + "require": "./index.d.cts", + "default": "./index.d.ts" + }, + "react-native": { + "require": "./dist/browser/axios.cjs", + "default": "./dist/esm/axios.js" + }, + "browser": { + "require": "./dist/browser/axios.cjs", + "default": "./index.js" + }, + "default": { + "require": "./dist/node/axios.cjs", + "default": "./index.js" + } + }, + "./lib/adapters/http.js": "./lib/adapters/http.js", + "./lib/adapters/xhr.js": "./lib/adapters/xhr.js", + "./unsafe/*": "./lib/*", + "./unsafe/core/settle.js": "./lib/core/settle.js", + "./unsafe/core/buildFullPath.js": "./lib/core/buildFullPath.js", + "./unsafe/helpers/isAbsoluteURL.js": "./lib/helpers/isAbsoluteURL.js", + "./unsafe/helpers/buildURL.js": "./lib/helpers/buildURL.js", + "./unsafe/helpers/combineURLs.js": "./lib/helpers/combineURLs.js", + "./unsafe/adapters/http.js": "./lib/adapters/http.js", + "./unsafe/adapters/xhr.js": "./lib/adapters/xhr.js", + "./unsafe/utils.js": "./lib/utils.js", + "./package.json": "./package.json" + }, + "type": "module", + "types": "index.d.ts", + "scripts": { + "test": "npm run test:eslint && npm run test:mocha && npm run test:karma && npm run test:dtslint && npm run test:exports", + "test:eslint": "node bin/ssl_hotfix.js eslint lib/**/*.js", + "test:dtslint": "dtslint --localTs node_modules/typescript/lib", + "test:mocha": "node bin/ssl_hotfix.js mocha test/unit/**/*.js --timeout 30000 --exit", + "test:exports": "node bin/ssl_hotfix.js mocha test/module/test.js --timeout 30000 --exit", + "test:karma": "node bin/ssl_hotfix.js cross-env LISTEN_ADDR=:: karma start karma.conf.cjs --single-run", + "test:karma:firefox": "node bin/ssl_hotfix.js cross-env LISTEN_ADDR=:: Browsers=Firefox karma start karma.conf.cjs --single-run", + "test:karma:server": "node bin/ssl_hotfix.js cross-env karma start karma.conf.cjs", + "test:build:version": "node ./bin/check-build-version.js", + "start": "node ./sandbox/server.js", + "preversion": "gulp version", + "version": "npm run build && git add dist && git add package.json", + "prepublishOnly": "npm run test:build:version", + "postpublish": "git push && git push --tags", + "build": "gulp clear && cross-env NODE_ENV=production rollup -c -m", + "examples": "node ./examples/server.js", + "coveralls": "cat coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js", + "fix": "eslint --fix lib/**/*.js", + "prepare": "husky install && npm run prepare:hooks", + "prepare:hooks": "npx husky set .husky/commit-msg \"npx commitlint --edit $1\"", + "release:dry": "release-it --dry-run --no-npm", + "release:info": "release-it --release-version", + "release:beta:no-npm": "release-it --preRelease=beta --no-npm", + "release:beta": "release-it --preRelease=beta", + "release:no-npm": "release-it --no-npm", + "release:changelog:fix": "node ./bin/injectContributorsList.js && git add CHANGELOG.md", + "release": "release-it" + }, + "repository": { + "type": "git", + "url": "https://github.com/axios/axios.git" + }, + "keywords": [ + "xhr", + "http", + "ajax", + "promise", + "node" + ], + "author": "Matt Zabriskie", + "license": "MIT", + "bugs": { + "url": "https://github.com/axios/axios/issues" + }, + "homepage": "https://axios-http.com", + "devDependencies": { + "@babel/core": "^7.23.9", + "@babel/preset-env": "^7.23.9", + "@commitlint/cli": "^17.8.1", + "@commitlint/config-conventional": "^17.8.1", + "@release-it/conventional-changelog": "^5.1.1", + "@rollup/plugin-babel": "^5.3.1", + "@rollup/plugin-commonjs": "^15.1.0", + "@rollup/plugin-json": "^4.1.0", + "@rollup/plugin-multi-entry": "^4.1.0", + "@rollup/plugin-node-resolve": "^9.0.0", + "abortcontroller-polyfill": "^1.7.5", + "auto-changelog": "^2.4.0", + "body-parser": "^1.20.2", + "chalk": "^5.3.0", + "coveralls": "^3.1.1", + "cross-env": "^7.0.3", + "dev-null": "^0.1.1", + "dtslint": "^4.2.1", + "es6-promise": "^4.2.8", + "eslint": "^8.56.0", + "express": "^4.18.2", + "formdata-node": "^5.0.1", + "formidable": "^2.1.2", + "fs-extra": "^10.1.0", + "get-stream": "^3.0.0", + "gulp": "^4.0.2", + "gzip-size": "^7.0.0", + "handlebars": "^4.7.8", + "husky": "^8.0.3", + "istanbul-instrumenter-loader": "^3.0.1", + "jasmine-core": "^2.99.1", + "karma": "^6.3.17", + "karma-chrome-launcher": "^3.2.0", + "karma-firefox-launcher": "^2.1.2", + "karma-jasmine": "^1.1.2", + "karma-jasmine-ajax": "^0.1.13", + "karma-rollup-preprocessor": "^7.0.8", + "karma-safari-launcher": "^1.0.0", + "karma-sauce-launcher": "^4.3.6", + "karma-sinon": "^1.0.5", + "karma-sourcemap-loader": "^0.3.8", + "memoizee": "^0.4.15", + "minimist": "^1.2.8", + "mocha": "^10.3.0", + "multer": "^1.4.4", + "pretty-bytes": "^6.1.1", + "release-it": "^15.11.0", + "rollup": "^2.79.1", + "rollup-plugin-auto-external": "^2.0.0", + "rollup-plugin-bundle-size": "^1.0.3", + "rollup-plugin-terser": "^7.0.2", + "sinon": "^4.5.0", + "stream-throttle": "^0.1.3", + "string-replace-async": "^3.0.2", + "terser-webpack-plugin": "^4.2.3", + "typescript": "^4.9.5", + "@rollup/plugin-alias": "^5.1.0" + }, + "browser": { + "./lib/adapters/http.js": "./lib/helpers/null.js", + "./lib/platform/node/index.js": "./lib/platform/browser/index.js", + "./lib/platform/node/classes/FormData.js": "./lib/helpers/null.js" + }, + "react-native": { + "./lib/adapters/http.js": "./lib/helpers/null.js", + "./lib/platform/node/index.js": "./lib/platform/browser/index.js", + "./lib/platform/node/classes/FormData.js": "./lib/helpers/null.js" + }, + "jsdelivr": "dist/axios.min.js", + "unpkg": "dist/axios.min.js", + "typings": "./index.d.ts", + "dependencies": { + "follow-redirects": "^1.15.6", + "form-data": "^4.0.0", + "proxy-from-env": "^1.1.0" + }, + "bundlesize": [ + { + "path": "./dist/axios.min.js", + "threshold": "5kB" + } + ], + "contributors": [ + "Matt Zabriskie (https://github.com/mzabriskie)", + "Nick Uraltsev (https://github.com/nickuraltsev)", + "Dmitriy Mozgovoy (https://github.com/DigitalBrainJS)", + "Jay (https://github.com/jasonsaayman)", + "Emily Morehouse (https://github.com/emilyemorehouse)", + "Rubén Norte (https://github.com/rubennorte)", + "Justin Beckwith (https://github.com/JustinBeckwith)", + "Martti Laine (https://github.com/codeclown)", + "Xianming Zhong (https://github.com/chinesedfan)", + "Rikki Gibson (https://github.com/RikkiGibson)", + "Remco Haszing (https://github.com/remcohaszing)", + "Yasu Flores (https://github.com/yasuf)", + "Ben Carp (https://github.com/carpben)" + ], + "sideEffects": false, + "release-it": { + "git": { + "commitMessage": "chore(release): v${version}", + "push": true, + "commit": true, + "tag": true, + "requireCommits": false, + "requireCleanWorkingDir": false + }, + "github": { + "release": true, + "draft": true + }, + "npm": { + "publish": false, + "ignoreVersion": false + }, + "plugins": { + "@release-it/conventional-changelog": { + "preset": "angular", + "infile": "CHANGELOG.md", + "header": "# Changelog" + } + }, + "hooks": { + "before:init": "npm test", + "after:bump": "gulp version --bump ${version} && npm run build && npm run test:build:version && git add ./dist && git add ./package-lock.json", + "before:release": "npm run release:changelog:fix", + "after:release": "echo Successfully released ${name} v${version} to ${repo.repository}." + } + }, + "commitlint": { + "rules": { + "header-max-length": [ + 2, + "always", + 130 + ] + }, + "extends": [ + "@commitlint/config-conventional" + ] + } +} \ No newline at end of file diff --git a/node_modules/call-bind-apply-helpers/.eslintrc b/node_modules/call-bind-apply-helpers/.eslintrc new file mode 100644 index 0000000..201e859 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/.eslintrc @@ -0,0 +1,17 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "func-name-matching": 0, + "id-length": 0, + "new-cap": [2, { + "capIsNewExceptions": [ + "GetIntrinsic", + ], + }], + "no-extra-parens": 0, + "no-magic-numbers": 0, + }, +} diff --git a/node_modules/call-bind-apply-helpers/.github/FUNDING.yml b/node_modules/call-bind-apply-helpers/.github/FUNDING.yml new file mode 100644 index 0000000..0011e9d --- /dev/null +++ b/node_modules/call-bind-apply-helpers/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/call-bind-apply-helpers +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/call-bind-apply-helpers/.nycrc b/node_modules/call-bind-apply-helpers/.nycrc new file mode 100644 index 0000000..bdd626c --- /dev/null +++ b/node_modules/call-bind-apply-helpers/.nycrc @@ -0,0 +1,9 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/call-bind-apply-helpers/CHANGELOG.md b/node_modules/call-bind-apply-helpers/CHANGELOG.md new file mode 100644 index 0000000..2484942 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/CHANGELOG.md @@ -0,0 +1,30 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.0.2](https://github.com/ljharb/call-bind-apply-helpers/compare/v1.0.1...v1.0.2) - 2025-02-12 + +### Commits + +- [types] improve inferred types [`e6f9586`](https://github.com/ljharb/call-bind-apply-helpers/commit/e6f95860a3c72879cb861a858cdfb8138fbedec1) +- [Dev Deps] update `@arethetypeswrong/cli`, `@ljharb/tsconfig`, `@types/tape`, `es-value-fixtures`, `for-each`, `has-strict-mode`, `object-inspect` [`e43d540`](https://github.com/ljharb/call-bind-apply-helpers/commit/e43d5409f97543bfbb11f345d47d8ce4e066d8c1) + +## [v1.0.1](https://github.com/ljharb/call-bind-apply-helpers/compare/v1.0.0...v1.0.1) - 2024-12-08 + +### Commits + +- [types] `reflectApply`: fix types [`4efc396`](https://github.com/ljharb/call-bind-apply-helpers/commit/4efc3965351a4f02cc55e836fa391d3d11ef2ef8) +- [Fix] `reflectApply`: oops, Reflect is not a function [`83cc739`](https://github.com/ljharb/call-bind-apply-helpers/commit/83cc7395de6b79b7730bdf092f1436f0b1263c75) +- [Dev Deps] update `@arethetypeswrong/cli` [`80bd5d3`](https://github.com/ljharb/call-bind-apply-helpers/commit/80bd5d3ae58b4f6b6995ce439dd5a1bcb178a940) + +## v1.0.0 - 2024-12-05 + +### Commits + +- Initial implementation, tests, readme [`7879629`](https://github.com/ljharb/call-bind-apply-helpers/commit/78796290f9b7430c9934d6f33d94ae9bc89fce04) +- Initial commit [`3f1dc16`](https://github.com/ljharb/call-bind-apply-helpers/commit/3f1dc164afc43285631b114a5f9dd9137b2b952f) +- npm init [`081df04`](https://github.com/ljharb/call-bind-apply-helpers/commit/081df048c312fcee400922026f6e97281200a603) +- Only apps should have lockfiles [`5b9ca0f`](https://github.com/ljharb/call-bind-apply-helpers/commit/5b9ca0fe8101ebfaf309c549caac4e0a017ed930) diff --git a/node_modules/call-bind-apply-helpers/LICENSE b/node_modules/call-bind-apply-helpers/LICENSE new file mode 100644 index 0000000..f82f389 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/call-bind-apply-helpers/README.md b/node_modules/call-bind-apply-helpers/README.md new file mode 100644 index 0000000..8fc0dae --- /dev/null +++ b/node_modules/call-bind-apply-helpers/README.md @@ -0,0 +1,62 @@ +# call-bind-apply-helpers [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![dependency status][deps-svg]][deps-url] +[![dev dependency status][dev-deps-svg]][dev-deps-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +Helper functions around Function call/apply/bind, for use in `call-bind`. + +The only packages that should likely ever use this package directly are `call-bind` and `get-intrinsic`. +Please use `call-bind` unless you have a very good reason not to. + +## Getting started + +```sh +npm install --save call-bind-apply-helpers +``` + +## Usage/Examples + +```js +const assert = require('assert'); +const callBindBasic = require('call-bind-apply-helpers'); + +function f(a, b) { + assert.equal(this, 1); + assert.equal(a, 2); + assert.equal(b, 3); + assert.equal(arguments.length, 2); +} + +const fBound = callBindBasic([f, 1]); + +delete Function.prototype.call; +delete Function.prototype.bind; + +fBound(2, 3); +``` + +## Tests + +Clone the repo, `npm install`, and run `npm test` + +[package-url]: https://npmjs.org/package/call-bind-apply-helpers +[npm-version-svg]: https://versionbadg.es/ljharb/call-bind-apply-helpers.svg +[deps-svg]: https://david-dm.org/ljharb/call-bind-apply-helpers.svg +[deps-url]: https://david-dm.org/ljharb/call-bind-apply-helpers +[dev-deps-svg]: https://david-dm.org/ljharb/call-bind-apply-helpers/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/call-bind-apply-helpers#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/call-bind-apply-helpers.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/call-bind-apply-helpers.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/call-bind-apply-helpers.svg +[downloads-url]: https://npm-stat.com/charts.html?package=call-bind-apply-helpers +[codecov-image]: https://codecov.io/gh/ljharb/call-bind-apply-helpers/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/call-bind-apply-helpers/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/call-bind-apply-helpers +[actions-url]: https://github.com/ljharb/call-bind-apply-helpers/actions diff --git a/node_modules/call-bind-apply-helpers/actualApply.d.ts b/node_modules/call-bind-apply-helpers/actualApply.d.ts new file mode 100644 index 0000000..b87286a --- /dev/null +++ b/node_modules/call-bind-apply-helpers/actualApply.d.ts @@ -0,0 +1 @@ +export = Reflect.apply; \ No newline at end of file diff --git a/node_modules/call-bind-apply-helpers/actualApply.js b/node_modules/call-bind-apply-helpers/actualApply.js new file mode 100644 index 0000000..ffa5135 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/actualApply.js @@ -0,0 +1,10 @@ +'use strict'; + +var bind = require('function-bind'); + +var $apply = require('./functionApply'); +var $call = require('./functionCall'); +var $reflectApply = require('./reflectApply'); + +/** @type {import('./actualApply')} */ +module.exports = $reflectApply || bind.call($call, $apply); diff --git a/node_modules/call-bind-apply-helpers/applyBind.d.ts b/node_modules/call-bind-apply-helpers/applyBind.d.ts new file mode 100644 index 0000000..d176c1a --- /dev/null +++ b/node_modules/call-bind-apply-helpers/applyBind.d.ts @@ -0,0 +1,19 @@ +import actualApply from './actualApply'; + +type TupleSplitHead = T['length'] extends N + ? T + : T extends [...infer R, any] + ? TupleSplitHead + : never + +type TupleSplitTail = O['length'] extends N + ? T + : T extends [infer F, ...infer R] + ? TupleSplitTail<[...R], N, [...O, F]> + : never + +type TupleSplit = [TupleSplitHead, TupleSplitTail] + +declare function applyBind(...args: TupleSplit, 2>[1]): ReturnType; + +export = applyBind; \ No newline at end of file diff --git a/node_modules/call-bind-apply-helpers/applyBind.js b/node_modules/call-bind-apply-helpers/applyBind.js new file mode 100644 index 0000000..d2b7723 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/applyBind.js @@ -0,0 +1,10 @@ +'use strict'; + +var bind = require('function-bind'); +var $apply = require('./functionApply'); +var actualApply = require('./actualApply'); + +/** @type {import('./applyBind')} */ +module.exports = function applyBind() { + return actualApply(bind, $apply, arguments); +}; diff --git a/node_modules/call-bind-apply-helpers/functionApply.d.ts b/node_modules/call-bind-apply-helpers/functionApply.d.ts new file mode 100644 index 0000000..1f6e11b --- /dev/null +++ b/node_modules/call-bind-apply-helpers/functionApply.d.ts @@ -0,0 +1 @@ +export = Function.prototype.apply; \ No newline at end of file diff --git a/node_modules/call-bind-apply-helpers/functionApply.js b/node_modules/call-bind-apply-helpers/functionApply.js new file mode 100644 index 0000000..c71df9c --- /dev/null +++ b/node_modules/call-bind-apply-helpers/functionApply.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./functionApply')} */ +module.exports = Function.prototype.apply; diff --git a/node_modules/call-bind-apply-helpers/functionCall.d.ts b/node_modules/call-bind-apply-helpers/functionCall.d.ts new file mode 100644 index 0000000..15e93df --- /dev/null +++ b/node_modules/call-bind-apply-helpers/functionCall.d.ts @@ -0,0 +1 @@ +export = Function.prototype.call; \ No newline at end of file diff --git a/node_modules/call-bind-apply-helpers/functionCall.js b/node_modules/call-bind-apply-helpers/functionCall.js new file mode 100644 index 0000000..7a8d873 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/functionCall.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./functionCall')} */ +module.exports = Function.prototype.call; diff --git a/node_modules/call-bind-apply-helpers/index.d.ts b/node_modules/call-bind-apply-helpers/index.d.ts new file mode 100644 index 0000000..541516b --- /dev/null +++ b/node_modules/call-bind-apply-helpers/index.d.ts @@ -0,0 +1,64 @@ +type RemoveFromTuple< + Tuple extends readonly unknown[], + RemoveCount extends number, + Index extends 1[] = [] +> = Index["length"] extends RemoveCount + ? Tuple + : Tuple extends [infer First, ...infer Rest] + ? RemoveFromTuple + : Tuple; + +type ConcatTuples< + Prefix extends readonly unknown[], + Suffix extends readonly unknown[] +> = [...Prefix, ...Suffix]; + +type ExtractFunctionParams = T extends (this: infer TThis, ...args: infer P extends readonly unknown[]) => infer R + ? { thisArg: TThis; params: P; returnType: R } + : never; + +type BindFunction< + T extends (this: any, ...args: any[]) => any, + TThis, + TBoundArgs extends readonly unknown[], + ReceiverBound extends boolean +> = ExtractFunctionParams extends { + thisArg: infer OrigThis; + params: infer P extends readonly unknown[]; + returnType: infer R; +} + ? ReceiverBound extends true + ? (...args: RemoveFromTuple>) => R extends [OrigThis, ...infer Rest] + ? [TThis, ...Rest] // Replace `this` with `thisArg` + : R + : >>( + thisArg: U, + ...args: RemainingArgs + ) => R extends [OrigThis, ...infer Rest] + ? [U, ...ConcatTuples] // Preserve bound args in return type + : R + : never; + +declare function callBind< + const T extends (this: any, ...args: any[]) => any, + Extracted extends ExtractFunctionParams, + const TBoundArgs extends Partial & readonly unknown[], + const TThis extends Extracted["thisArg"] +>( + args: [fn: T, thisArg: TThis, ...boundArgs: TBoundArgs] +): BindFunction; + +declare function callBind< + const T extends (this: any, ...args: any[]) => any, + Extracted extends ExtractFunctionParams, + const TBoundArgs extends Partial & readonly unknown[] +>( + args: [fn: T, ...boundArgs: TBoundArgs] +): BindFunction; + +declare function callBind( + args: [fn: Exclude, ...rest: TArgs] +): never; + +// export as namespace callBind; +export = callBind; diff --git a/node_modules/call-bind-apply-helpers/index.js b/node_modules/call-bind-apply-helpers/index.js new file mode 100644 index 0000000..2f6dab4 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/index.js @@ -0,0 +1,15 @@ +'use strict'; + +var bind = require('function-bind'); +var $TypeError = require('es-errors/type'); + +var $call = require('./functionCall'); +var $actualApply = require('./actualApply'); + +/** @type {(args: [Function, thisArg?: unknown, ...args: unknown[]]) => Function} TODO FIXME, find a way to use import('.') */ +module.exports = function callBindBasic(args) { + if (args.length < 1 || typeof args[0] !== 'function') { + throw new $TypeError('a function is required'); + } + return $actualApply(bind, $call, args); +}; diff --git a/node_modules/call-bind-apply-helpers/package.json b/node_modules/call-bind-apply-helpers/package.json new file mode 100644 index 0000000..923b8be --- /dev/null +++ b/node_modules/call-bind-apply-helpers/package.json @@ -0,0 +1,85 @@ +{ + "name": "call-bind-apply-helpers", + "version": "1.0.2", + "description": "Helper functions around Function call/apply/bind, for use in `call-bind`", + "main": "index.js", + "exports": { + ".": "./index.js", + "./actualApply": "./actualApply.js", + "./applyBind": "./applyBind.js", + "./functionApply": "./functionApply.js", + "./functionCall": "./functionCall.js", + "./reflectApply": "./reflectApply.js", + "./package.json": "./package.json" + }, + "scripts": { + "prepack": "npmignore --auto --commentLines=auto", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "safe-publish-latest", + "prelint": "evalmd README.md", + "lint": "eslint --ext=.js,.mjs .", + "postlint": "tsc -p . && attw -P", + "pretest": "npm run lint", + "tests-only": "nyc tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "npx npm@'>=10.2' audit --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/call-bind-apply-helpers.git" + }, + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/call-bind-apply-helpers/issues" + }, + "homepage": "https://github.com/ljharb/call-bind-apply-helpers#readme", + "dependencies": { + "es-errors": "^1.3.0", + "function-bind": "^1.1.2" + }, + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.3", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.3", + "@types/for-each": "^0.3.3", + "@types/function-bind": "^1.1.10", + "@types/object-inspect": "^1.13.0", + "@types/tape": "^5.8.1", + "auto-changelog": "^2.5.0", + "encoding": "^0.1.13", + "es-value-fixtures": "^1.7.1", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "for-each": "^0.3.5", + "has-strict-mode": "^1.1.0", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "object-inspect": "^1.13.4", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "testling": { + "files": "test/index.js" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/call-bind-apply-helpers/reflectApply.d.ts b/node_modules/call-bind-apply-helpers/reflectApply.d.ts new file mode 100644 index 0000000..6b2ae76 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/reflectApply.d.ts @@ -0,0 +1,3 @@ +declare const reflectApply: false | typeof Reflect.apply; + +export = reflectApply; diff --git a/node_modules/call-bind-apply-helpers/reflectApply.js b/node_modules/call-bind-apply-helpers/reflectApply.js new file mode 100644 index 0000000..3d03caa --- /dev/null +++ b/node_modules/call-bind-apply-helpers/reflectApply.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./reflectApply')} */ +module.exports = typeof Reflect !== 'undefined' && Reflect && Reflect.apply; diff --git a/node_modules/call-bind-apply-helpers/test/index.js b/node_modules/call-bind-apply-helpers/test/index.js new file mode 100644 index 0000000..1cdc89e --- /dev/null +++ b/node_modules/call-bind-apply-helpers/test/index.js @@ -0,0 +1,63 @@ +'use strict'; + +var callBind = require('../'); +var hasStrictMode = require('has-strict-mode')(); +var forEach = require('for-each'); +var inspect = require('object-inspect'); +var v = require('es-value-fixtures'); + +var test = require('tape'); + +test('callBindBasic', function (t) { + forEach(v.nonFunctions, function (nonFunction) { + t['throws']( + // @ts-expect-error + function () { callBind([nonFunction]); }, + TypeError, + inspect(nonFunction) + ' is not a function' + ); + }); + + var sentinel = { sentinel: true }; + /** @type {(this: T, a: A, b: B) => [T | undefined, A, B]} */ + var func = function (a, b) { + // eslint-disable-next-line no-invalid-this + return [!hasStrictMode && this === global ? undefined : this, a, b]; + }; + t.equal(func.length, 2, 'original function length is 2'); + + /** type {(thisArg: unknown, a: number, b: number) => [unknown, number, number]} */ + var bound = callBind([func]); + /** type {((a: number, b: number) => [typeof sentinel, typeof a, typeof b])} */ + var boundR = callBind([func, sentinel]); + /** type {((b: number) => [typeof sentinel, number, typeof b])} */ + var boundArg = callBind([func, sentinel, /** @type {const} */ (1)]); + + // @ts-expect-error + t.deepEqual(bound(), [undefined, undefined, undefined], 'bound func with no args'); + + // @ts-expect-error + t.deepEqual(func(), [undefined, undefined, undefined], 'unbound func with too few args'); + // @ts-expect-error + t.deepEqual(bound(1, 2), [hasStrictMode ? 1 : Object(1), 2, undefined], 'bound func too few args'); + // @ts-expect-error + t.deepEqual(boundR(), [sentinel, undefined, undefined], 'bound func with receiver, with too few args'); + // @ts-expect-error + t.deepEqual(boundArg(), [sentinel, 1, undefined], 'bound func with receiver and arg, with too few args'); + + t.deepEqual(func(1, 2), [undefined, 1, 2], 'unbound func with right args'); + t.deepEqual(bound(1, 2, 3), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with right args'); + t.deepEqual(boundR(1, 2), [sentinel, 1, 2], 'bound func with receiver, with right args'); + t.deepEqual(boundArg(2), [sentinel, 1, 2], 'bound func with receiver and arg, with right arg'); + + // @ts-expect-error + t.deepEqual(func(1, 2, 3), [undefined, 1, 2], 'unbound func with too many args'); + // @ts-expect-error + t.deepEqual(bound(1, 2, 3, 4), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with too many args'); + // @ts-expect-error + t.deepEqual(boundR(1, 2, 3), [sentinel, 1, 2], 'bound func with receiver, with too many args'); + // @ts-expect-error + t.deepEqual(boundArg(2, 3), [sentinel, 1, 2], 'bound func with receiver and arg, with too many args'); + + t.end(); +}); diff --git a/node_modules/call-bind-apply-helpers/tsconfig.json b/node_modules/call-bind-apply-helpers/tsconfig.json new file mode 100644 index 0000000..aef9993 --- /dev/null +++ b/node_modules/call-bind-apply-helpers/tsconfig.json @@ -0,0 +1,9 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "es2021", + }, + "exclude": [ + "coverage", + ], +} \ No newline at end of file diff --git a/node_modules/combined-stream/License b/node_modules/combined-stream/License new file mode 100644 index 0000000..4804b7a --- /dev/null +++ b/node_modules/combined-stream/License @@ -0,0 +1,19 @@ +Copyright (c) 2011 Debuggable Limited + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/node_modules/combined-stream/Readme.md b/node_modules/combined-stream/Readme.md new file mode 100644 index 0000000..9e367b5 --- /dev/null +++ b/node_modules/combined-stream/Readme.md @@ -0,0 +1,138 @@ +# combined-stream + +A stream that emits multiple other streams one after another. + +**NB** Currently `combined-stream` works with streams version 1 only. There is ongoing effort to switch this library to streams version 2. Any help is welcome. :) Meanwhile you can explore other libraries that provide streams2 support with more or less compatibility with `combined-stream`. + +- [combined-stream2](https://www.npmjs.com/package/combined-stream2): A drop-in streams2-compatible replacement for the combined-stream module. + +- [multistream](https://www.npmjs.com/package/multistream): A stream that emits multiple other streams one after another. + +## Installation + +``` bash +npm install combined-stream +``` + +## Usage + +Here is a simple example that shows how you can use combined-stream to combine +two files into one: + +``` javascript +var CombinedStream = require('combined-stream'); +var fs = require('fs'); + +var combinedStream = CombinedStream.create(); +combinedStream.append(fs.createReadStream('file1.txt')); +combinedStream.append(fs.createReadStream('file2.txt')); + +combinedStream.pipe(fs.createWriteStream('combined.txt')); +``` + +While the example above works great, it will pause all source streams until +they are needed. If you don't want that to happen, you can set `pauseStreams` +to `false`: + +``` javascript +var CombinedStream = require('combined-stream'); +var fs = require('fs'); + +var combinedStream = CombinedStream.create({pauseStreams: false}); +combinedStream.append(fs.createReadStream('file1.txt')); +combinedStream.append(fs.createReadStream('file2.txt')); + +combinedStream.pipe(fs.createWriteStream('combined.txt')); +``` + +However, what if you don't have all the source streams yet, or you don't want +to allocate the resources (file descriptors, memory, etc.) for them right away? +Well, in that case you can simply provide a callback that supplies the stream +by calling a `next()` function: + +``` javascript +var CombinedStream = require('combined-stream'); +var fs = require('fs'); + +var combinedStream = CombinedStream.create(); +combinedStream.append(function(next) { + next(fs.createReadStream('file1.txt')); +}); +combinedStream.append(function(next) { + next(fs.createReadStream('file2.txt')); +}); + +combinedStream.pipe(fs.createWriteStream('combined.txt')); +``` + +## API + +### CombinedStream.create([options]) + +Returns a new combined stream object. Available options are: + +* `maxDataSize` +* `pauseStreams` + +The effect of those options is described below. + +### combinedStream.pauseStreams = `true` + +Whether to apply back pressure to the underlaying streams. If set to `false`, +the underlaying streams will never be paused. If set to `true`, the +underlaying streams will be paused right after being appended, as well as when +`delayedStream.pipe()` wants to throttle. + +### combinedStream.maxDataSize = `2 * 1024 * 1024` + +The maximum amount of bytes (or characters) to buffer for all source streams. +If this value is exceeded, `combinedStream` emits an `'error'` event. + +### combinedStream.dataSize = `0` + +The amount of bytes (or characters) currently buffered by `combinedStream`. + +### combinedStream.append(stream) + +Appends the given `stream` to the combinedStream object. If `pauseStreams` is +set to `true, this stream will also be paused right away. + +`streams` can also be a function that takes one parameter called `next`. `next` +is a function that must be invoked in order to provide the `next` stream, see +example above. + +Regardless of how the `stream` is appended, combined-stream always attaches an +`'error'` listener to it, so you don't have to do that manually. + +Special case: `stream` can also be a String or Buffer. + +### combinedStream.write(data) + +You should not call this, `combinedStream` takes care of piping the appended +streams into itself for you. + +### combinedStream.resume() + +Causes `combinedStream` to start drain the streams it manages. The function is +idempotent, and also emits a `'resume'` event each time which usually goes to +the stream that is currently being drained. + +### combinedStream.pause(); + +If `combinedStream.pauseStreams` is set to `false`, this does nothing. +Otherwise a `'pause'` event is emitted, this goes to the stream that is +currently being drained, so you can use it to apply back pressure. + +### combinedStream.end(); + +Sets `combinedStream.writable` to false, emits an `'end'` event, and removes +all streams from the queue. + +### combinedStream.destroy(); + +Same as `combinedStream.end()`, except it emits a `'close'` event instead of +`'end'`. + +## License + +combined-stream is licensed under the MIT license. diff --git a/node_modules/combined-stream/lib/combined_stream.js b/node_modules/combined-stream/lib/combined_stream.js new file mode 100644 index 0000000..125f097 --- /dev/null +++ b/node_modules/combined-stream/lib/combined_stream.js @@ -0,0 +1,208 @@ +var util = require('util'); +var Stream = require('stream').Stream; +var DelayedStream = require('delayed-stream'); + +module.exports = CombinedStream; +function CombinedStream() { + this.writable = false; + this.readable = true; + this.dataSize = 0; + this.maxDataSize = 2 * 1024 * 1024; + this.pauseStreams = true; + + this._released = false; + this._streams = []; + this._currentStream = null; + this._insideLoop = false; + this._pendingNext = false; +} +util.inherits(CombinedStream, Stream); + +CombinedStream.create = function(options) { + var combinedStream = new this(); + + options = options || {}; + for (var option in options) { + combinedStream[option] = options[option]; + } + + return combinedStream; +}; + +CombinedStream.isStreamLike = function(stream) { + return (typeof stream !== 'function') + && (typeof stream !== 'string') + && (typeof stream !== 'boolean') + && (typeof stream !== 'number') + && (!Buffer.isBuffer(stream)); +}; + +CombinedStream.prototype.append = function(stream) { + var isStreamLike = CombinedStream.isStreamLike(stream); + + if (isStreamLike) { + if (!(stream instanceof DelayedStream)) { + var newStream = DelayedStream.create(stream, { + maxDataSize: Infinity, + pauseStream: this.pauseStreams, + }); + stream.on('data', this._checkDataSize.bind(this)); + stream = newStream; + } + + this._handleErrors(stream); + + if (this.pauseStreams) { + stream.pause(); + } + } + + this._streams.push(stream); + return this; +}; + +CombinedStream.prototype.pipe = function(dest, options) { + Stream.prototype.pipe.call(this, dest, options); + this.resume(); + return dest; +}; + +CombinedStream.prototype._getNext = function() { + this._currentStream = null; + + if (this._insideLoop) { + this._pendingNext = true; + return; // defer call + } + + this._insideLoop = true; + try { + do { + this._pendingNext = false; + this._realGetNext(); + } while (this._pendingNext); + } finally { + this._insideLoop = false; + } +}; + +CombinedStream.prototype._realGetNext = function() { + var stream = this._streams.shift(); + + + if (typeof stream == 'undefined') { + this.end(); + return; + } + + if (typeof stream !== 'function') { + this._pipeNext(stream); + return; + } + + var getStream = stream; + getStream(function(stream) { + var isStreamLike = CombinedStream.isStreamLike(stream); + if (isStreamLike) { + stream.on('data', this._checkDataSize.bind(this)); + this._handleErrors(stream); + } + + this._pipeNext(stream); + }.bind(this)); +}; + +CombinedStream.prototype._pipeNext = function(stream) { + this._currentStream = stream; + + var isStreamLike = CombinedStream.isStreamLike(stream); + if (isStreamLike) { + stream.on('end', this._getNext.bind(this)); + stream.pipe(this, {end: false}); + return; + } + + var value = stream; + this.write(value); + this._getNext(); +}; + +CombinedStream.prototype._handleErrors = function(stream) { + var self = this; + stream.on('error', function(err) { + self._emitError(err); + }); +}; + +CombinedStream.prototype.write = function(data) { + this.emit('data', data); +}; + +CombinedStream.prototype.pause = function() { + if (!this.pauseStreams) { + return; + } + + if(this.pauseStreams && this._currentStream && typeof(this._currentStream.pause) == 'function') this._currentStream.pause(); + this.emit('pause'); +}; + +CombinedStream.prototype.resume = function() { + if (!this._released) { + this._released = true; + this.writable = true; + this._getNext(); + } + + if(this.pauseStreams && this._currentStream && typeof(this._currentStream.resume) == 'function') this._currentStream.resume(); + this.emit('resume'); +}; + +CombinedStream.prototype.end = function() { + this._reset(); + this.emit('end'); +}; + +CombinedStream.prototype.destroy = function() { + this._reset(); + this.emit('close'); +}; + +CombinedStream.prototype._reset = function() { + this.writable = false; + this._streams = []; + this._currentStream = null; +}; + +CombinedStream.prototype._checkDataSize = function() { + this._updateDataSize(); + if (this.dataSize <= this.maxDataSize) { + return; + } + + var message = + 'DelayedStream#maxDataSize of ' + this.maxDataSize + ' bytes exceeded.'; + this._emitError(new Error(message)); +}; + +CombinedStream.prototype._updateDataSize = function() { + this.dataSize = 0; + + var self = this; + this._streams.forEach(function(stream) { + if (!stream.dataSize) { + return; + } + + self.dataSize += stream.dataSize; + }); + + if (this._currentStream && this._currentStream.dataSize) { + this.dataSize += this._currentStream.dataSize; + } +}; + +CombinedStream.prototype._emitError = function(err) { + this._reset(); + this.emit('error', err); +}; diff --git a/node_modules/combined-stream/package.json b/node_modules/combined-stream/package.json new file mode 100644 index 0000000..6982b6d --- /dev/null +++ b/node_modules/combined-stream/package.json @@ -0,0 +1,25 @@ +{ + "author": "Felix Geisendörfer (http://debuggable.com/)", + "name": "combined-stream", + "description": "A stream that emits multiple other streams one after another.", + "version": "1.0.8", + "homepage": "https://github.com/felixge/node-combined-stream", + "repository": { + "type": "git", + "url": "git://github.com/felixge/node-combined-stream.git" + }, + "main": "./lib/combined_stream", + "scripts": { + "test": "node test/run.js" + }, + "engines": { + "node": ">= 0.8" + }, + "dependencies": { + "delayed-stream": "~1.0.0" + }, + "devDependencies": { + "far": "~0.0.7" + }, + "license": "MIT" +} diff --git a/node_modules/combined-stream/yarn.lock b/node_modules/combined-stream/yarn.lock new file mode 100644 index 0000000..7edf418 --- /dev/null +++ b/node_modules/combined-stream/yarn.lock @@ -0,0 +1,17 @@ +# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY. +# yarn lockfile v1 + + +delayed-stream@~1.0.0: + version "1.0.0" + resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619" + +far@~0.0.7: + version "0.0.7" + resolved "https://registry.yarnpkg.com/far/-/far-0.0.7.tgz#01c1fd362bcd26ce9cf161af3938aa34619f79a7" + dependencies: + oop "0.0.3" + +oop@0.0.3: + version "0.0.3" + resolved "https://registry.yarnpkg.com/oop/-/oop-0.0.3.tgz#70fa405a5650891a194fdc82ca68dad6dabf4401" diff --git a/node_modules/data-uri-to-buffer/README.md b/node_modules/data-uri-to-buffer/README.md new file mode 100644 index 0000000..d0f2e05 --- /dev/null +++ b/node_modules/data-uri-to-buffer/README.md @@ -0,0 +1,88 @@ +data-uri-to-buffer +================== +### Generate a Buffer instance from a [Data URI][rfc] string +[![Build Status](https://travis-ci.org/TooTallNate/node-data-uri-to-buffer.svg?branch=master)](https://travis-ci.org/TooTallNate/node-data-uri-to-buffer) + +This module accepts a ["data" URI][rfc] String of data, and returns a +node.js `Buffer` instance with the decoded data. + + +Installation +------------ + +Install with `npm`: + +``` bash +$ npm install data-uri-to-buffer +``` + + +Example +------- + +``` js +import dataUriToBuffer from 'data-uri-to-buffer'; + +// plain-text data is supported +let uri = 'data:,Hello%2C%20World!'; +let decoded = dataUriToBuffer(uri); +console.log(decoded.toString()); +// 'Hello, World!' + +// base64-encoded data is supported +uri = 'data:text/plain;base64,SGVsbG8sIFdvcmxkIQ%3D%3D'; +decoded = dataUriToBuffer(uri); +console.log(decoded.toString()); +// 'Hello, World!' +``` + + +API +--- + +### dataUriToBuffer(String uri) → Buffer + +The `type` property on the Buffer instance gets set to the main type portion of +the "mediatype" portion of the "data" URI, or defaults to `"text/plain"` if not +specified. + +The `typeFull` property on the Buffer instance gets set to the entire +"mediatype" portion of the "data" URI (including all parameters), or defaults +to `"text/plain;charset=US-ASCII"` if not specified. + +The `charset` property on the Buffer instance gets set to the Charset portion of +the "mediatype" portion of the "data" URI, or defaults to `"US-ASCII"` if the +entire type is not specified, or defaults to `""` otherwise. + +*Note*: If the only the main type is specified but not the charset, e.g. +`"data:text/plain,abc"`, the charset is set to the empty string. The spec only +defaults to US-ASCII as charset if the entire type is not specified. + + +License +------- + +(The MIT License) + +Copyright (c) 2014 Nathan Rajlich <nathan@tootallnate.net> + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +'Software'), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +[rfc]: http://tools.ietf.org/html/rfc2397 diff --git a/node_modules/data-uri-to-buffer/dist/index.d.ts b/node_modules/data-uri-to-buffer/dist/index.d.ts new file mode 100644 index 0000000..2a3d91e --- /dev/null +++ b/node_modules/data-uri-to-buffer/dist/index.d.ts @@ -0,0 +1,15 @@ +/// +export interface MimeBuffer extends Buffer { + type: string; + typeFull: string; + charset: string; +} +/** + * Returns a `Buffer` instance from the given data URI `uri`. + * + * @param {String} uri Data URI to turn into a Buffer instance + * @returns {Buffer} Buffer instance from Data URI + * @api public + */ +export declare function dataUriToBuffer(uri: string): MimeBuffer; +export default dataUriToBuffer; diff --git a/node_modules/data-uri-to-buffer/dist/index.js b/node_modules/data-uri-to-buffer/dist/index.js new file mode 100644 index 0000000..4ddd079 --- /dev/null +++ b/node_modules/data-uri-to-buffer/dist/index.js @@ -0,0 +1,53 @@ +/** + * Returns a `Buffer` instance from the given data URI `uri`. + * + * @param {String} uri Data URI to turn into a Buffer instance + * @returns {Buffer} Buffer instance from Data URI + * @api public + */ +export function dataUriToBuffer(uri) { + if (!/^data:/i.test(uri)) { + throw new TypeError('`uri` does not appear to be a Data URI (must begin with "data:")'); + } + // strip newlines + uri = uri.replace(/\r?\n/g, ''); + // split the URI up into the "metadata" and the "data" portions + const firstComma = uri.indexOf(','); + if (firstComma === -1 || firstComma <= 4) { + throw new TypeError('malformed data: URI'); + } + // remove the "data:" scheme and parse the metadata + const meta = uri.substring(5, firstComma).split(';'); + let charset = ''; + let base64 = false; + const type = meta[0] || 'text/plain'; + let typeFull = type; + for (let i = 1; i < meta.length; i++) { + if (meta[i] === 'base64') { + base64 = true; + } + else if (meta[i]) { + typeFull += `;${meta[i]}`; + if (meta[i].indexOf('charset=') === 0) { + charset = meta[i].substring(8); + } + } + } + // defaults to US-ASCII only if type is not provided + if (!meta[0] && !charset.length) { + typeFull += ';charset=US-ASCII'; + charset = 'US-ASCII'; + } + // get the encoded data portion and decode URI-encoded chars + const encoding = base64 ? 'base64' : 'ascii'; + const data = unescape(uri.substring(firstComma + 1)); + const buffer = Buffer.from(data, encoding); + // set `.type` and `.typeFull` properties to MIME type + buffer.type = type; + buffer.typeFull = typeFull; + // set the `.charset` property + buffer.charset = charset; + return buffer; +} +export default dataUriToBuffer; +//# sourceMappingURL=index.js.map \ No newline at end of file diff --git a/node_modules/data-uri-to-buffer/dist/index.js.map b/node_modules/data-uri-to-buffer/dist/index.js.map new file mode 100644 index 0000000..696504a --- /dev/null +++ b/node_modules/data-uri-to-buffer/dist/index.js.map @@ -0,0 +1 @@ +{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAMA;;;;;;GAMG;AACH,MAAM,UAAU,eAAe,CAAC,GAAW;IAC1C,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,GAAG,CAAC,EAAE;QACzB,MAAM,IAAI,SAAS,CAClB,kEAAkE,CAClE,CAAC;KACF;IAED,iBAAiB;IACjB,GAAG,GAAG,GAAG,CAAC,OAAO,CAAC,QAAQ,EAAE,EAAE,CAAC,CAAC;IAEhC,+DAA+D;IAC/D,MAAM,UAAU,GAAG,GAAG,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;IACpC,IAAI,UAAU,KAAK,CAAC,CAAC,IAAI,UAAU,IAAI,CAAC,EAAE;QACzC,MAAM,IAAI,SAAS,CAAC,qBAAqB,CAAC,CAAC;KAC3C;IAED,mDAAmD;IACnD,MAAM,IAAI,GAAG,GAAG,CAAC,SAAS,CAAC,CAAC,EAAE,UAAU,CAAC,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC;IAErD,IAAI,OAAO,GAAG,EAAE,CAAC;IACjB,IAAI,MAAM,GAAG,KAAK,CAAC;IACnB,MAAM,IAAI,GAAG,IAAI,CAAC,CAAC,CAAC,IAAI,YAAY,CAAC;IACrC,IAAI,QAAQ,GAAG,IAAI,CAAC;IACpB,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;QACrC,IAAI,IAAI,CAAC,CAAC,CAAC,KAAK,QAAQ,EAAE;YACzB,MAAM,GAAG,IAAI,CAAC;SACd;aAAM,IAAG,IAAI,CAAC,CAAC,CAAC,EAAE;YAClB,QAAQ,IAAI,IAAM,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC;YAC5B,IAAI,IAAI,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,KAAK,CAAC,EAAE;gBACtC,OAAO,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;aAC/B;SACD;KACD;IACD,oDAAoD;IACpD,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,OAAO,CAAC,MAAM,EAAE;QAChC,QAAQ,IAAI,mBAAmB,CAAC;QAChC,OAAO,GAAG,UAAU,CAAC;KACrB;IAED,4DAA4D;IAC5D,MAAM,QAAQ,GAAG,MAAM,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC,CAAC,OAAO,CAAC;IAC7C,MAAM,IAAI,GAAG,QAAQ,CAAC,GAAG,CAAC,SAAS,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC,CAAC;IACrD,MAAM,MAAM,GAAG,MAAM,CAAC,IAAI,CAAC,IAAI,EAAE,QAAQ,CAAe,CAAC;IAEzD,sDAAsD;IACtD,MAAM,CAAC,IAAI,GAAG,IAAI,CAAC;IACnB,MAAM,CAAC,QAAQ,GAAG,QAAQ,CAAC;IAE3B,8BAA8B;IAC9B,MAAM,CAAC,OAAO,GAAG,OAAO,CAAC;IAEzB,OAAO,MAAM,CAAC;AACf,CAAC;AAED,eAAe,eAAe,CAAC"} \ No newline at end of file diff --git a/node_modules/data-uri-to-buffer/package.json b/node_modules/data-uri-to-buffer/package.json new file mode 100644 index 0000000..9e42713 --- /dev/null +++ b/node_modules/data-uri-to-buffer/package.json @@ -0,0 +1,62 @@ +{ + "name": "data-uri-to-buffer", + "version": "4.0.1", + "description": "Generate a Buffer instance from a Data URI string", + "type": "module", + "exports": "./dist/index.js", + "main": "./dist/index.js", + "types": "./dist/index.d.ts", + "files": [ + "dist", + "src" + ], + "scripts": { + "build": "tsc", + "test": "jest", + "prepublishOnly": "npm run build" + }, + "repository": { + "type": "git", + "url": "git://github.com/TooTallNate/node-data-uri-to-buffer.git" + }, + "engines": { + "node": ">= 12" + }, + "keywords": [ + "data", + "uri", + "datauri", + "data-uri", + "buffer", + "convert", + "rfc2397", + "2397" + ], + "author": "Nathan Rajlich (http://n8.io/)", + "license": "MIT", + "bugs": { + "url": "https://github.com/TooTallNate/node-data-uri-to-buffer/issues" + }, + "homepage": "https://github.com/TooTallNate/node-data-uri-to-buffer", + "devDependencies": { + "@types/jest": "^27.0.2", + "@types/node": "^12.20.36", + "jest": "^27.3.1", + "ts-jest": "^27.0.7", + "typescript": "^4.4.4" + }, + "jest": { + "preset": "ts-jest", + "globals": { + "ts-jest": { + "diagnostics": false, + "isolatedModules": true + } + }, + "verbose": false, + "testEnvironment": "node", + "testMatch": [ + "/test/**/*.test.ts" + ] + } +} diff --git a/node_modules/data-uri-to-buffer/src/index.ts b/node_modules/data-uri-to-buffer/src/index.ts new file mode 100644 index 0000000..9e5749f --- /dev/null +++ b/node_modules/data-uri-to-buffer/src/index.ts @@ -0,0 +1,68 @@ +export interface MimeBuffer extends Buffer { + type: string; + typeFull: string; + charset: string; +} + +/** + * Returns a `Buffer` instance from the given data URI `uri`. + * + * @param {String} uri Data URI to turn into a Buffer instance + * @returns {Buffer} Buffer instance from Data URI + * @api public + */ +export function dataUriToBuffer(uri: string): MimeBuffer { + if (!/^data:/i.test(uri)) { + throw new TypeError( + '`uri` does not appear to be a Data URI (must begin with "data:")' + ); + } + + // strip newlines + uri = uri.replace(/\r?\n/g, ''); + + // split the URI up into the "metadata" and the "data" portions + const firstComma = uri.indexOf(','); + if (firstComma === -1 || firstComma <= 4) { + throw new TypeError('malformed data: URI'); + } + + // remove the "data:" scheme and parse the metadata + const meta = uri.substring(5, firstComma).split(';'); + + let charset = ''; + let base64 = false; + const type = meta[0] || 'text/plain'; + let typeFull = type; + for (let i = 1; i < meta.length; i++) { + if (meta[i] === 'base64') { + base64 = true; + } else if(meta[i]) { + typeFull += `;${ meta[i]}`; + if (meta[i].indexOf('charset=') === 0) { + charset = meta[i].substring(8); + } + } + } + // defaults to US-ASCII only if type is not provided + if (!meta[0] && !charset.length) { + typeFull += ';charset=US-ASCII'; + charset = 'US-ASCII'; + } + + // get the encoded data portion and decode URI-encoded chars + const encoding = base64 ? 'base64' : 'ascii'; + const data = unescape(uri.substring(firstComma + 1)); + const buffer = Buffer.from(data, encoding) as MimeBuffer; + + // set `.type` and `.typeFull` properties to MIME type + buffer.type = type; + buffer.typeFull = typeFull; + + // set the `.charset` property + buffer.charset = charset; + + return buffer; +} + +export default dataUriToBuffer; diff --git a/node_modules/delayed-stream/.npmignore b/node_modules/delayed-stream/.npmignore new file mode 100644 index 0000000..9daeafb --- /dev/null +++ b/node_modules/delayed-stream/.npmignore @@ -0,0 +1 @@ +test diff --git a/node_modules/delayed-stream/License b/node_modules/delayed-stream/License new file mode 100644 index 0000000..4804b7a --- /dev/null +++ b/node_modules/delayed-stream/License @@ -0,0 +1,19 @@ +Copyright (c) 2011 Debuggable Limited + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/node_modules/delayed-stream/Makefile b/node_modules/delayed-stream/Makefile new file mode 100644 index 0000000..b4ff85a --- /dev/null +++ b/node_modules/delayed-stream/Makefile @@ -0,0 +1,7 @@ +SHELL := /bin/bash + +test: + @./test/run.js + +.PHONY: test + diff --git a/node_modules/delayed-stream/Readme.md b/node_modules/delayed-stream/Readme.md new file mode 100644 index 0000000..aca36f9 --- /dev/null +++ b/node_modules/delayed-stream/Readme.md @@ -0,0 +1,141 @@ +# delayed-stream + +Buffers events from a stream until you are ready to handle them. + +## Installation + +``` bash +npm install delayed-stream +``` + +## Usage + +The following example shows how to write a http echo server that delays its +response by 1000 ms. + +``` javascript +var DelayedStream = require('delayed-stream'); +var http = require('http'); + +http.createServer(function(req, res) { + var delayed = DelayedStream.create(req); + + setTimeout(function() { + res.writeHead(200); + delayed.pipe(res); + }, 1000); +}); +``` + +If you are not using `Stream#pipe`, you can also manually release the buffered +events by calling `delayedStream.resume()`: + +``` javascript +var delayed = DelayedStream.create(req); + +setTimeout(function() { + // Emit all buffered events and resume underlaying source + delayed.resume(); +}, 1000); +``` + +## Implementation + +In order to use this meta stream properly, here are a few things you should +know about the implementation. + +### Event Buffering / Proxying + +All events of the `source` stream are hijacked by overwriting the `source.emit` +method. Until node implements a catch-all event listener, this is the only way. + +However, delayed-stream still continues to emit all events it captures on the +`source`, regardless of whether you have released the delayed stream yet or +not. + +Upon creation, delayed-stream captures all `source` events and stores them in +an internal event buffer. Once `delayedStream.release()` is called, all +buffered events are emitted on the `delayedStream`, and the event buffer is +cleared. After that, delayed-stream merely acts as a proxy for the underlaying +source. + +### Error handling + +Error events on `source` are buffered / proxied just like any other events. +However, `delayedStream.create` attaches a no-op `'error'` listener to the +`source`. This way you only have to handle errors on the `delayedStream` +object, rather than in two places. + +### Buffer limits + +delayed-stream provides a `maxDataSize` property that can be used to limit +the amount of data being buffered. In order to protect you from bad `source` +streams that don't react to `source.pause()`, this feature is enabled by +default. + +## API + +### DelayedStream.create(source, [options]) + +Returns a new `delayedStream`. Available options are: + +* `pauseStream` +* `maxDataSize` + +The description for those properties can be found below. + +### delayedStream.source + +The `source` stream managed by this object. This is useful if you are +passing your `delayedStream` around, and you still want to access properties +on the `source` object. + +### delayedStream.pauseStream = true + +Whether to pause the underlaying `source` when calling +`DelayedStream.create()`. Modifying this property afterwards has no effect. + +### delayedStream.maxDataSize = 1024 * 1024 + +The amount of data to buffer before emitting an `error`. + +If the underlaying source is emitting `Buffer` objects, the `maxDataSize` +refers to bytes. + +If the underlaying source is emitting JavaScript strings, the size refers to +characters. + +If you know what you are doing, you can set this property to `Infinity` to +disable this feature. You can also modify this property during runtime. + +### delayedStream.dataSize = 0 + +The amount of data buffered so far. + +### delayedStream.readable + +An ECMA5 getter that returns the value of `source.readable`. + +### delayedStream.resume() + +If the `delayedStream` has not been released so far, `delayedStream.release()` +is called. + +In either case, `source.resume()` is called. + +### delayedStream.pause() + +Calls `source.pause()`. + +### delayedStream.pipe(dest) + +Calls `delayedStream.resume()` and then proxies the arguments to `source.pipe`. + +### delayedStream.release() + +Emits and clears all events that have been buffered up so far. This does not +resume the underlaying source, use `delayedStream.resume()` instead. + +## License + +delayed-stream is licensed under the MIT license. diff --git a/node_modules/delayed-stream/lib/delayed_stream.js b/node_modules/delayed-stream/lib/delayed_stream.js new file mode 100644 index 0000000..b38fc85 --- /dev/null +++ b/node_modules/delayed-stream/lib/delayed_stream.js @@ -0,0 +1,107 @@ +var Stream = require('stream').Stream; +var util = require('util'); + +module.exports = DelayedStream; +function DelayedStream() { + this.source = null; + this.dataSize = 0; + this.maxDataSize = 1024 * 1024; + this.pauseStream = true; + + this._maxDataSizeExceeded = false; + this._released = false; + this._bufferedEvents = []; +} +util.inherits(DelayedStream, Stream); + +DelayedStream.create = function(source, options) { + var delayedStream = new this(); + + options = options || {}; + for (var option in options) { + delayedStream[option] = options[option]; + } + + delayedStream.source = source; + + var realEmit = source.emit; + source.emit = function() { + delayedStream._handleEmit(arguments); + return realEmit.apply(source, arguments); + }; + + source.on('error', function() {}); + if (delayedStream.pauseStream) { + source.pause(); + } + + return delayedStream; +}; + +Object.defineProperty(DelayedStream.prototype, 'readable', { + configurable: true, + enumerable: true, + get: function() { + return this.source.readable; + } +}); + +DelayedStream.prototype.setEncoding = function() { + return this.source.setEncoding.apply(this.source, arguments); +}; + +DelayedStream.prototype.resume = function() { + if (!this._released) { + this.release(); + } + + this.source.resume(); +}; + +DelayedStream.prototype.pause = function() { + this.source.pause(); +}; + +DelayedStream.prototype.release = function() { + this._released = true; + + this._bufferedEvents.forEach(function(args) { + this.emit.apply(this, args); + }.bind(this)); + this._bufferedEvents = []; +}; + +DelayedStream.prototype.pipe = function() { + var r = Stream.prototype.pipe.apply(this, arguments); + this.resume(); + return r; +}; + +DelayedStream.prototype._handleEmit = function(args) { + if (this._released) { + this.emit.apply(this, args); + return; + } + + if (args[0] === 'data') { + this.dataSize += args[1].length; + this._checkIfMaxDataSizeExceeded(); + } + + this._bufferedEvents.push(args); +}; + +DelayedStream.prototype._checkIfMaxDataSizeExceeded = function() { + if (this._maxDataSizeExceeded) { + return; + } + + if (this.dataSize <= this.maxDataSize) { + return; + } + + this._maxDataSizeExceeded = true; + var message = + 'DelayedStream#maxDataSize of ' + this.maxDataSize + ' bytes exceeded.' + this.emit('error', new Error(message)); +}; diff --git a/node_modules/delayed-stream/package.json b/node_modules/delayed-stream/package.json new file mode 100644 index 0000000..eea3291 --- /dev/null +++ b/node_modules/delayed-stream/package.json @@ -0,0 +1,27 @@ +{ + "author": "Felix Geisendörfer (http://debuggable.com/)", + "contributors": [ + "Mike Atkins " + ], + "name": "delayed-stream", + "description": "Buffers events from a stream until you are ready to handle them.", + "license": "MIT", + "version": "1.0.0", + "homepage": "https://github.com/felixge/node-delayed-stream", + "repository": { + "type": "git", + "url": "git://github.com/felixge/node-delayed-stream.git" + }, + "main": "./lib/delayed_stream", + "engines": { + "node": ">=0.4.0" + }, + "scripts": { + "test": "make test" + }, + "dependencies": {}, + "devDependencies": { + "fake": "0.2.0", + "far": "0.0.1" + } +} diff --git a/node_modules/dunder-proto/.eslintrc b/node_modules/dunder-proto/.eslintrc new file mode 100644 index 0000000..3b5d9e9 --- /dev/null +++ b/node_modules/dunder-proto/.eslintrc @@ -0,0 +1,5 @@ +{ + "root": true, + + "extends": "@ljharb", +} diff --git a/node_modules/dunder-proto/.github/FUNDING.yml b/node_modules/dunder-proto/.github/FUNDING.yml new file mode 100644 index 0000000..8a1d7b0 --- /dev/null +++ b/node_modules/dunder-proto/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/dunder-proto +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/dunder-proto/.nycrc b/node_modules/dunder-proto/.nycrc new file mode 100644 index 0000000..1826526 --- /dev/null +++ b/node_modules/dunder-proto/.nycrc @@ -0,0 +1,13 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "lines": 86, + "statements": 85.93, + "functions": 82.43, + "branches": 76.06, + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/dunder-proto/CHANGELOG.md b/node_modules/dunder-proto/CHANGELOG.md new file mode 100644 index 0000000..9b8b2f8 --- /dev/null +++ b/node_modules/dunder-proto/CHANGELOG.md @@ -0,0 +1,24 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.0.1](https://github.com/es-shims/dunder-proto/compare/v1.0.0...v1.0.1) - 2024-12-16 + +### Commits + +- [Fix] do not crash when `--disable-proto=throw` [`6c367d9`](https://github.com/es-shims/dunder-proto/commit/6c367d919bc1604778689a297bbdbfea65752847) +- [Tests] ensure noproto tests only use the current version of dunder-proto [`b02365b`](https://github.com/es-shims/dunder-proto/commit/b02365b9cf889c4a2cac7be0c3cfc90a789af36c) +- [Dev Deps] update `@arethetypeswrong/cli`, `@types/tape` [`e3c5c3b`](https://github.com/es-shims/dunder-proto/commit/e3c5c3bd81cf8cef7dff2eca19e558f0e307f666) +- [Deps] update `call-bind-apply-helpers` [`19f1da0`](https://github.com/es-shims/dunder-proto/commit/19f1da028b8dd0d05c85bfd8f7eed2819b686450) + +## v1.0.0 - 2024-12-06 + +### Commits + +- Initial implementation, tests, readme, types [`a5b74b0`](https://github.com/es-shims/dunder-proto/commit/a5b74b0082f5270cb0905cd9a2e533cee7498373) +- Initial commit [`73fb5a3`](https://github.com/es-shims/dunder-proto/commit/73fb5a353b51ac2ab00c9fdeb0114daffd4c07a8) +- npm init [`80152dc`](https://github.com/es-shims/dunder-proto/commit/80152dc98155da4eb046d9f67a87ed96e8280a1d) +- Only apps should have lockfiles [`03e6660`](https://github.com/es-shims/dunder-proto/commit/03e6660a1d70dc401f3e217a031475ec537243dd) diff --git a/node_modules/dunder-proto/LICENSE b/node_modules/dunder-proto/LICENSE new file mode 100644 index 0000000..34995e7 --- /dev/null +++ b/node_modules/dunder-proto/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 ECMAScript Shims + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/dunder-proto/README.md b/node_modules/dunder-proto/README.md new file mode 100644 index 0000000..44b80a2 --- /dev/null +++ b/node_modules/dunder-proto/README.md @@ -0,0 +1,54 @@ +# dunder-proto [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +If available, the `Object.prototype.__proto__` accessor and mutator, call-bound. + +## Getting started + +```sh +npm install --save dunder-proto +``` + +## Usage/Examples + +```js +const assert = require('assert'); +const getDunder = require('dunder-proto/get'); +const setDunder = require('dunder-proto/set'); + +const obj = {}; + +assert.equal('toString' in obj, true); +assert.equal(getDunder(obj), Object.prototype); + +setDunder(obj, null); + +assert.equal('toString' in obj, false); +assert.equal(getDunder(obj), null); +``` + +## Tests + +Clone the repo, `npm install`, and run `npm test` + +[package-url]: https://npmjs.org/package/dunder-proto +[npm-version-svg]: https://versionbadg.es/es-shims/dunder-proto.svg +[deps-svg]: https://david-dm.org/es-shims/dunder-proto.svg +[deps-url]: https://david-dm.org/es-shims/dunder-proto +[dev-deps-svg]: https://david-dm.org/es-shims/dunder-proto/dev-status.svg +[dev-deps-url]: https://david-dm.org/es-shims/dunder-proto#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/dunder-proto.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/dunder-proto.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/dunder-proto.svg +[downloads-url]: https://npm-stat.com/charts.html?package=dunder-proto +[codecov-image]: https://codecov.io/gh/es-shims/dunder-proto/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/es-shims/dunder-proto/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/dunder-proto +[actions-url]: https://github.com/es-shims/dunder-proto/actions diff --git a/node_modules/dunder-proto/get.d.ts b/node_modules/dunder-proto/get.d.ts new file mode 100644 index 0000000..c7e14d2 --- /dev/null +++ b/node_modules/dunder-proto/get.d.ts @@ -0,0 +1,5 @@ +declare function getDunderProto(target: {}): object | null; + +declare const x: false | typeof getDunderProto; + +export = x; \ No newline at end of file diff --git a/node_modules/dunder-proto/get.js b/node_modules/dunder-proto/get.js new file mode 100644 index 0000000..45093df --- /dev/null +++ b/node_modules/dunder-proto/get.js @@ -0,0 +1,30 @@ +'use strict'; + +var callBind = require('call-bind-apply-helpers'); +var gOPD = require('gopd'); + +var hasProtoAccessor; +try { + // eslint-disable-next-line no-extra-parens, no-proto + hasProtoAccessor = /** @type {{ __proto__?: typeof Array.prototype }} */ ([]).__proto__ === Array.prototype; +} catch (e) { + if (!e || typeof e !== 'object' || !('code' in e) || e.code !== 'ERR_PROTO_ACCESS') { + throw e; + } +} + +// eslint-disable-next-line no-extra-parens +var desc = !!hasProtoAccessor && gOPD && gOPD(Object.prototype, /** @type {keyof typeof Object.prototype} */ ('__proto__')); + +var $Object = Object; +var $getPrototypeOf = $Object.getPrototypeOf; + +/** @type {import('./get')} */ +module.exports = desc && typeof desc.get === 'function' + ? callBind([desc.get]) + : typeof $getPrototypeOf === 'function' + ? /** @type {import('./get')} */ function getDunder(value) { + // eslint-disable-next-line eqeqeq + return $getPrototypeOf(value == null ? value : $Object(value)); + } + : false; diff --git a/node_modules/dunder-proto/package.json b/node_modules/dunder-proto/package.json new file mode 100644 index 0000000..04a4036 --- /dev/null +++ b/node_modules/dunder-proto/package.json @@ -0,0 +1,76 @@ +{ + "name": "dunder-proto", + "version": "1.0.1", + "description": "If available, the `Object.prototype.__proto__` accessor and mutator, call-bound", + "main": false, + "exports": { + "./get": "./get.js", + "./set": "./set.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "safe-publish-latest", + "prelint": "evalmd README.md", + "lint": "eslint --ext=.js,.mjs .", + "postlint": "tsc -p . && attw -P", + "pretest": "npm run lint", + "tests-only": "nyc tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "npx npm@'>= 10.2' audit --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/es-shims/dunder-proto.git" + }, + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/es-shims/dunder-proto/issues" + }, + "homepage": "https://github.com/es-shims/dunder-proto#readme", + "dependencies": { + "call-bind-apply-helpers": "^1.0.1", + "es-errors": "^1.3.0", + "gopd": "^1.2.0" + }, + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.1", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.2", + "@types/tape": "^5.7.0", + "auto-changelog": "^2.5.0", + "encoding": "^0.1.13", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "testling": { + "files": "test/index.js" + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/dunder-proto/set.d.ts b/node_modules/dunder-proto/set.d.ts new file mode 100644 index 0000000..16bfdfe --- /dev/null +++ b/node_modules/dunder-proto/set.d.ts @@ -0,0 +1,5 @@ +declare function setDunderProto

(target: {}, proto: P): P; + +declare const x: false | typeof setDunderProto; + +export = x; \ No newline at end of file diff --git a/node_modules/dunder-proto/set.js b/node_modules/dunder-proto/set.js new file mode 100644 index 0000000..6085b6e --- /dev/null +++ b/node_modules/dunder-proto/set.js @@ -0,0 +1,35 @@ +'use strict'; + +var callBind = require('call-bind-apply-helpers'); +var gOPD = require('gopd'); +var $TypeError = require('es-errors/type'); + +/** @type {{ __proto__?: object | null }} */ +var obj = {}; +try { + obj.__proto__ = null; // eslint-disable-line no-proto +} catch (e) { + if (!e || typeof e !== 'object' || !('code' in e) || e.code !== 'ERR_PROTO_ACCESS') { + throw e; + } +} + +var hasProtoMutator = !('toString' in obj); + +// eslint-disable-next-line no-extra-parens +var desc = gOPD && gOPD(Object.prototype, /** @type {keyof typeof Object.prototype} */ ('__proto__')); + +/** @type {import('./set')} */ +module.exports = hasProtoMutator && ( +// eslint-disable-next-line no-extra-parens + (!!desc && typeof desc.set === 'function' && /** @type {import('./set')} */ (callBind([desc.set]))) + || /** @type {import('./set')} */ function setDunder(object, proto) { + // this is node v0.10 or older, which doesn't have Object.setPrototypeOf and has undeniable __proto__ + if (object == null) { // eslint-disable-line eqeqeq + throw new $TypeError('set Object.prototype.__proto__ called on null or undefined'); + } + // eslint-disable-next-line no-proto, no-param-reassign, no-extra-parens + /** @type {{ __proto__?: object | null }} */ (object).__proto__ = proto; + return proto; + } +); diff --git a/node_modules/dunder-proto/test/get.js b/node_modules/dunder-proto/test/get.js new file mode 100644 index 0000000..253f183 --- /dev/null +++ b/node_modules/dunder-proto/test/get.js @@ -0,0 +1,34 @@ +'use strict'; + +var test = require('tape'); + +var getDunderProto = require('../get'); + +test('getDunderProto', { skip: !getDunderProto }, function (t) { + if (!getDunderProto) { + throw 'should never happen; this is just for type narrowing'; // eslint-disable-line no-throw-literal + } + + // @ts-expect-error + t['throws'](function () { getDunderProto(); }, TypeError, 'throws if no argument'); + // @ts-expect-error + t['throws'](function () { getDunderProto(undefined); }, TypeError, 'throws with undefined'); + // @ts-expect-error + t['throws'](function () { getDunderProto(null); }, TypeError, 'throws with null'); + + t.equal(getDunderProto({}), Object.prototype); + t.equal(getDunderProto([]), Array.prototype); + t.equal(getDunderProto(function () {}), Function.prototype); + t.equal(getDunderProto(/./g), RegExp.prototype); + t.equal(getDunderProto(42), Number.prototype); + t.equal(getDunderProto(true), Boolean.prototype); + t.equal(getDunderProto('foo'), String.prototype); + + t.end(); +}); + +test('no dunder proto', { skip: !!getDunderProto }, function (t) { + t.notOk('__proto__' in Object.prototype, 'no __proto__ in Object.prototype'); + + t.end(); +}); diff --git a/node_modules/dunder-proto/test/index.js b/node_modules/dunder-proto/test/index.js new file mode 100644 index 0000000..08ff36f --- /dev/null +++ b/node_modules/dunder-proto/test/index.js @@ -0,0 +1,4 @@ +'use strict'; + +require('./get'); +require('./set'); diff --git a/node_modules/dunder-proto/test/set.js b/node_modules/dunder-proto/test/set.js new file mode 100644 index 0000000..c3bfe4d --- /dev/null +++ b/node_modules/dunder-proto/test/set.js @@ -0,0 +1,50 @@ +'use strict'; + +var test = require('tape'); + +var setDunderProto = require('../set'); + +test('setDunderProto', { skip: !setDunderProto }, function (t) { + if (!setDunderProto) { + throw 'should never happen; this is just for type narrowing'; // eslint-disable-line no-throw-literal + } + + // @ts-expect-error + t['throws'](function () { setDunderProto(); }, TypeError, 'throws if no arguments'); + // @ts-expect-error + t['throws'](function () { setDunderProto(undefined); }, TypeError, 'throws with undefined and nothing'); + // @ts-expect-error + t['throws'](function () { setDunderProto(undefined, undefined); }, TypeError, 'throws with undefined and undefined'); + // @ts-expect-error + t['throws'](function () { setDunderProto(null); }, TypeError, 'throws with null and undefined'); + // @ts-expect-error + t['throws'](function () { setDunderProto(null, undefined); }, TypeError, 'throws with null and undefined'); + + /** @type {{ inherited?: boolean }} */ + var obj = {}; + t.ok('toString' in obj, 'object initially has toString'); + + setDunderProto(obj, null); + t.notOk('toString' in obj, 'object no longer has toString'); + + t.notOk('inherited' in obj, 'object lacks inherited property'); + setDunderProto(obj, { inherited: true }); + t.equal(obj.inherited, true, 'object has inherited property'); + + t.end(); +}); + +test('no dunder proto', { skip: !!setDunderProto }, function (t) { + if ('__proto__' in Object.prototype) { + t['throws']( + // @ts-expect-error + function () { ({}).__proto__ = null; }, // eslint-disable-line no-proto + Error, + 'throws when setting Object.prototype.__proto__' + ); + } else { + t.notOk('__proto__' in Object.prototype, 'no __proto__ in Object.prototype'); + } + + t.end(); +}); diff --git a/node_modules/dunder-proto/tsconfig.json b/node_modules/dunder-proto/tsconfig.json new file mode 100644 index 0000000..dabbe23 --- /dev/null +++ b/node_modules/dunder-proto/tsconfig.json @@ -0,0 +1,9 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "ES2021", + }, + "exclude": [ + "coverage", + ], +} diff --git a/node_modules/es-define-property/.eslintrc b/node_modules/es-define-property/.eslintrc new file mode 100644 index 0000000..46f3b12 --- /dev/null +++ b/node_modules/es-define-property/.eslintrc @@ -0,0 +1,13 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "new-cap": ["error", { + "capIsNewExceptions": [ + "GetIntrinsic", + ], + }], + }, +} diff --git a/node_modules/es-define-property/.github/FUNDING.yml b/node_modules/es-define-property/.github/FUNDING.yml new file mode 100644 index 0000000..4445451 --- /dev/null +++ b/node_modules/es-define-property/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/es-define-property +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with a single custom sponsorship URL diff --git a/node_modules/es-define-property/.nycrc b/node_modules/es-define-property/.nycrc new file mode 100644 index 0000000..bdd626c --- /dev/null +++ b/node_modules/es-define-property/.nycrc @@ -0,0 +1,9 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/es-define-property/CHANGELOG.md b/node_modules/es-define-property/CHANGELOG.md new file mode 100644 index 0000000..5f60cc0 --- /dev/null +++ b/node_modules/es-define-property/CHANGELOG.md @@ -0,0 +1,29 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.0.1](https://github.com/ljharb/es-define-property/compare/v1.0.0...v1.0.1) - 2024-12-06 + +### Commits + +- [types] use shared tsconfig [`954a663`](https://github.com/ljharb/es-define-property/commit/954a66360326e508a0e5daa4b07493d58f5e110e) +- [actions] split out node 10-20, and 20+ [`3a8e84b`](https://github.com/ljharb/es-define-property/commit/3a8e84b23883f26ff37b3e82ff283834228e18c6) +- [Dev Deps] update `@ljharb/eslint-config`, `@ljharb/tsconfig`, `@types/get-intrinsic`, `@types/tape`, `auto-changelog`, `gopd`, `tape` [`86ae27b`](https://github.com/ljharb/es-define-property/commit/86ae27bb8cc857b23885136fad9cbe965ae36612) +- [Refactor] avoid using `get-intrinsic` [`02480c0`](https://github.com/ljharb/es-define-property/commit/02480c0353ef6118965282977c3864aff53d98b1) +- [Tests] replace `aud` with `npm audit` [`f6093ff`](https://github.com/ljharb/es-define-property/commit/f6093ff74ab51c98015c2592cd393bd42478e773) +- [Tests] configure testling [`7139e66`](https://github.com/ljharb/es-define-property/commit/7139e66959247a56086d9977359caef27c6849e7) +- [Dev Deps] update `tape` [`b901b51`](https://github.com/ljharb/es-define-property/commit/b901b511a75e001a40ce1a59fef7d9ffcfc87482) +- [Tests] fix types in tests [`469d269`](https://github.com/ljharb/es-define-property/commit/469d269fd141b1e773ec053a9fa35843493583e0) +- [Dev Deps] add missing peer dep [`733acfb`](https://github.com/ljharb/es-define-property/commit/733acfb0c4c96edf337e470b89a25a5b3724c352) + +## v1.0.0 - 2024-02-12 + +### Commits + +- Initial implementation, tests, readme, types [`3e154e1`](https://github.com/ljharb/es-define-property/commit/3e154e11a2fee09127220f5e503bf2c0a31dd480) +- Initial commit [`07d98de`](https://github.com/ljharb/es-define-property/commit/07d98de34a4dc31ff5e83a37c0c3f49e0d85cd50) +- npm init [`c4eb634`](https://github.com/ljharb/es-define-property/commit/c4eb6348b0d3886aac36cef34ad2ee0665ea6f3e) +- Only apps should have lockfiles [`7af86ec`](https://github.com/ljharb/es-define-property/commit/7af86ec1d311ec0b17fdfe616a25f64276903856) diff --git a/node_modules/es-define-property/LICENSE b/node_modules/es-define-property/LICENSE new file mode 100644 index 0000000..f82f389 --- /dev/null +++ b/node_modules/es-define-property/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/es-define-property/README.md b/node_modules/es-define-property/README.md new file mode 100644 index 0000000..9b291bd --- /dev/null +++ b/node_modules/es-define-property/README.md @@ -0,0 +1,49 @@ +# es-define-property [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +`Object.defineProperty`, but not IE 8's broken one. + +## Example + +```js +const assert = require('assert'); + +const $defineProperty = require('es-define-property'); + +if ($defineProperty) { + assert.equal($defineProperty, Object.defineProperty); +} else if (Object.defineProperty) { + assert.equal($defineProperty, false, 'this is IE 8'); +} else { + assert.equal($defineProperty, false, 'this is an ES3 engine'); +} +``` + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +## Security + +Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report. + +[package-url]: https://npmjs.org/package/es-define-property +[npm-version-svg]: https://versionbadg.es/ljharb/es-define-property.svg +[deps-svg]: https://david-dm.org/ljharb/es-define-property.svg +[deps-url]: https://david-dm.org/ljharb/es-define-property +[dev-deps-svg]: https://david-dm.org/ljharb/es-define-property/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/es-define-property#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/es-define-property.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/es-define-property.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/es-define-property.svg +[downloads-url]: https://npm-stat.com/charts.html?package=es-define-property +[codecov-image]: https://codecov.io/gh/ljharb/es-define-property/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/es-define-property/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/es-define-property +[actions-url]: https://github.com/ljharb/es-define-property/actions diff --git a/node_modules/es-define-property/index.d.ts b/node_modules/es-define-property/index.d.ts new file mode 100644 index 0000000..6012247 --- /dev/null +++ b/node_modules/es-define-property/index.d.ts @@ -0,0 +1,3 @@ +declare const defineProperty: false | typeof Object.defineProperty; + +export = defineProperty; \ No newline at end of file diff --git a/node_modules/es-define-property/index.js b/node_modules/es-define-property/index.js new file mode 100644 index 0000000..e0a2925 --- /dev/null +++ b/node_modules/es-define-property/index.js @@ -0,0 +1,14 @@ +'use strict'; + +/** @type {import('.')} */ +var $defineProperty = Object.defineProperty || false; +if ($defineProperty) { + try { + $defineProperty({}, 'a', { value: 1 }); + } catch (e) { + // IE 8 has a broken defineProperty + $defineProperty = false; + } +} + +module.exports = $defineProperty; diff --git a/node_modules/es-define-property/package.json b/node_modules/es-define-property/package.json new file mode 100644 index 0000000..fbed187 --- /dev/null +++ b/node_modules/es-define-property/package.json @@ -0,0 +1,81 @@ +{ + "name": "es-define-property", + "version": "1.0.1", + "description": "`Object.defineProperty`, but not IE 8's broken one.", + "main": "index.js", + "types": "./index.d.ts", + "exports": { + ".": "./index.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "safe-publish-latest", + "prelint": "evalmd README.md", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc -p .", + "pretest": "npm run lint", + "tests-only": "nyc tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "npx npm@'>= 10.2' audit --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/es-define-property.git" + }, + "keywords": [ + "javascript", + "ecmascript", + "object", + "define", + "property", + "defineProperty", + "Object.defineProperty" + ], + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/es-define-property/issues" + }, + "homepage": "https://github.com/ljharb/es-define-property#readme", + "devDependencies": { + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.2", + "@types/gopd": "^1.0.3", + "@types/tape": "^5.6.5", + "auto-changelog": "^2.5.0", + "encoding": "^0.1.13", + "eslint": "^8.8.0", + "evalmd": "^0.0.19", + "gopd": "^1.2.0", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "engines": { + "node": ">= 0.4" + }, + "testling": { + "files": "test/index.js" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + } +} diff --git a/node_modules/es-define-property/test/index.js b/node_modules/es-define-property/test/index.js new file mode 100644 index 0000000..b4b4688 --- /dev/null +++ b/node_modules/es-define-property/test/index.js @@ -0,0 +1,56 @@ +'use strict'; + +var $defineProperty = require('../'); + +var test = require('tape'); +var gOPD = require('gopd'); + +test('defineProperty: supported', { skip: !$defineProperty }, function (t) { + t.plan(4); + + t.equal(typeof $defineProperty, 'function', 'defineProperty is supported'); + if ($defineProperty && gOPD) { // this `if` check is just to shut TS up + /** @type {{ a: number, b?: number, c?: number }} */ + var o = { a: 1 }; + + $defineProperty(o, 'b', { enumerable: true, value: 2 }); + t.deepEqual( + gOPD(o, 'b'), + { + configurable: false, + enumerable: true, + value: 2, + writable: false + }, + 'property descriptor is as expected' + ); + + $defineProperty(o, 'c', { enumerable: false, value: 3, writable: true }); + t.deepEqual( + gOPD(o, 'c'), + { + configurable: false, + enumerable: false, + value: 3, + writable: true + }, + 'property descriptor is as expected' + ); + } + + t.equal($defineProperty, Object.defineProperty, 'defineProperty is Object.defineProperty'); + + t.end(); +}); + +test('defineProperty: not supported', { skip: !!$defineProperty }, function (t) { + t.notOk($defineProperty, 'defineProperty is not supported'); + + t.match( + typeof $defineProperty, + /^(?:undefined|boolean)$/, + '`typeof defineProperty` is `undefined` or `boolean`' + ); + + t.end(); +}); diff --git a/node_modules/es-define-property/tsconfig.json b/node_modules/es-define-property/tsconfig.json new file mode 100644 index 0000000..5a49992 --- /dev/null +++ b/node_modules/es-define-property/tsconfig.json @@ -0,0 +1,10 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "es2022", + }, + "exclude": [ + "coverage", + "test/list-exports" + ], +} diff --git a/node_modules/es-errors/.eslintrc b/node_modules/es-errors/.eslintrc new file mode 100644 index 0000000..3b5d9e9 --- /dev/null +++ b/node_modules/es-errors/.eslintrc @@ -0,0 +1,5 @@ +{ + "root": true, + + "extends": "@ljharb", +} diff --git a/node_modules/es-errors/.github/FUNDING.yml b/node_modules/es-errors/.github/FUNDING.yml new file mode 100644 index 0000000..f1b8805 --- /dev/null +++ b/node_modules/es-errors/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/es-errors +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with a single custom sponsorship URL diff --git a/node_modules/es-errors/CHANGELOG.md b/node_modules/es-errors/CHANGELOG.md new file mode 100644 index 0000000..204a9e9 --- /dev/null +++ b/node_modules/es-errors/CHANGELOG.md @@ -0,0 +1,40 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.3.0](https://github.com/ljharb/es-errors/compare/v1.2.1...v1.3.0) - 2024-02-05 + +### Commits + +- [New] add `EvalError` and `URIError` [`1927627`](https://github.com/ljharb/es-errors/commit/1927627ba68cb6c829d307231376c967db53acdf) + +## [v1.2.1](https://github.com/ljharb/es-errors/compare/v1.2.0...v1.2.1) - 2024-02-04 + +### Commits + +- [Fix] add missing `exports` entry [`5bb5f28`](https://github.com/ljharb/es-errors/commit/5bb5f280f98922701109d6ebb82eea2257cecc7e) + +## [v1.2.0](https://github.com/ljharb/es-errors/compare/v1.1.0...v1.2.0) - 2024-02-04 + +### Commits + +- [New] add `ReferenceError` [`6d8cf5b`](https://github.com/ljharb/es-errors/commit/6d8cf5bbb6f3f598d02cf6f30e468ba2caa8e143) + +## [v1.1.0](https://github.com/ljharb/es-errors/compare/v1.0.0...v1.1.0) - 2024-02-04 + +### Commits + +- [New] add base Error [`2983ab6`](https://github.com/ljharb/es-errors/commit/2983ab65f7bc5441276cb021dc3aa03c78881698) + +## v1.0.0 - 2024-02-03 + +### Commits + +- Initial implementation, tests, readme, type [`8f47631`](https://github.com/ljharb/es-errors/commit/8f476317e9ad76f40ad648081829b1a1a3a1288b) +- Initial commit [`ea5d099`](https://github.com/ljharb/es-errors/commit/ea5d099ef18e550509ab9e2be000526afd81c385) +- npm init [`6f5ebf9`](https://github.com/ljharb/es-errors/commit/6f5ebf9cead474dadd72b9e63dad315820a089ae) +- Only apps should have lockfiles [`e1a0aeb`](https://github.com/ljharb/es-errors/commit/e1a0aeb7b80f5cfc56be54d6b2100e915d47def8) +- [meta] add `sideEffects` flag [`a9c7d46`](https://github.com/ljharb/es-errors/commit/a9c7d460a492f1d8a241c836bc25a322a19cc043) diff --git a/node_modules/es-errors/LICENSE b/node_modules/es-errors/LICENSE new file mode 100644 index 0000000..f82f389 --- /dev/null +++ b/node_modules/es-errors/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/es-errors/README.md b/node_modules/es-errors/README.md new file mode 100644 index 0000000..8dbfacf --- /dev/null +++ b/node_modules/es-errors/README.md @@ -0,0 +1,55 @@ +# es-errors [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +A simple cache for a few of the JS Error constructors. + +## Example + +```js +const assert = require('assert'); + +const Base = require('es-errors'); +const Eval = require('es-errors/eval'); +const Range = require('es-errors/range'); +const Ref = require('es-errors/ref'); +const Syntax = require('es-errors/syntax'); +const Type = require('es-errors/type'); +const URI = require('es-errors/uri'); + +assert.equal(Base, Error); +assert.equal(Eval, EvalError); +assert.equal(Range, RangeError); +assert.equal(Ref, ReferenceError); +assert.equal(Syntax, SyntaxError); +assert.equal(Type, TypeError); +assert.equal(URI, URIError); +``` + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +## Security + +Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report. + +[package-url]: https://npmjs.org/package/es-errors +[npm-version-svg]: https://versionbadg.es/ljharb/es-errors.svg +[deps-svg]: https://david-dm.org/ljharb/es-errors.svg +[deps-url]: https://david-dm.org/ljharb/es-errors +[dev-deps-svg]: https://david-dm.org/ljharb/es-errors/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/es-errors#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/es-errors.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/es-errors.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/es-errors.svg +[downloads-url]: https://npm-stat.com/charts.html?package=es-errors +[codecov-image]: https://codecov.io/gh/ljharb/es-errors/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/es-errors/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/es-errors +[actions-url]: https://github.com/ljharb/es-errors/actions diff --git a/node_modules/es-errors/eval.d.ts b/node_modules/es-errors/eval.d.ts new file mode 100644 index 0000000..e4210e0 --- /dev/null +++ b/node_modules/es-errors/eval.d.ts @@ -0,0 +1,3 @@ +declare const EvalError: EvalErrorConstructor; + +export = EvalError; diff --git a/node_modules/es-errors/eval.js b/node_modules/es-errors/eval.js new file mode 100644 index 0000000..725ccb6 --- /dev/null +++ b/node_modules/es-errors/eval.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./eval')} */ +module.exports = EvalError; diff --git a/node_modules/es-errors/index.d.ts b/node_modules/es-errors/index.d.ts new file mode 100644 index 0000000..69bdbc9 --- /dev/null +++ b/node_modules/es-errors/index.d.ts @@ -0,0 +1,3 @@ +declare const Error: ErrorConstructor; + +export = Error; diff --git a/node_modules/es-errors/index.js b/node_modules/es-errors/index.js new file mode 100644 index 0000000..cc0c521 --- /dev/null +++ b/node_modules/es-errors/index.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('.')} */ +module.exports = Error; diff --git a/node_modules/es-errors/package.json b/node_modules/es-errors/package.json new file mode 100644 index 0000000..ff8c2a5 --- /dev/null +++ b/node_modules/es-errors/package.json @@ -0,0 +1,80 @@ +{ + "name": "es-errors", + "version": "1.3.0", + "description": "A simple cache for a few of the JS Error constructors.", + "main": "index.js", + "exports": { + ".": "./index.js", + "./eval": "./eval.js", + "./range": "./range.js", + "./ref": "./ref.js", + "./syntax": "./syntax.js", + "./type": "./type.js", + "./uri": "./uri.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "pretest": "npm run lint", + "test": "npm run tests-only", + "tests-only": "nyc tape 'test/**/*.js'", + "posttest": "aud --production", + "prelint": "evalmd README.md", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc -p . && eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git' | grep -v dist/)", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/es-errors.git" + }, + "keywords": [ + "javascript", + "ecmascript", + "error", + "typeerror", + "syntaxerror", + "rangeerror" + ], + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/es-errors/issues" + }, + "homepage": "https://github.com/ljharb/es-errors#readme", + "devDependencies": { + "@ljharb/eslint-config": "^21.1.0", + "@types/tape": "^5.6.4", + "aud": "^2.0.4", + "auto-changelog": "^2.4.0", + "eclint": "^2.8.1", + "eslint": "^8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.7.4", + "typescript": "next" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/es-errors/range.d.ts b/node_modules/es-errors/range.d.ts new file mode 100644 index 0000000..3a12e86 --- /dev/null +++ b/node_modules/es-errors/range.d.ts @@ -0,0 +1,3 @@ +declare const RangeError: RangeErrorConstructor; + +export = RangeError; diff --git a/node_modules/es-errors/range.js b/node_modules/es-errors/range.js new file mode 100644 index 0000000..2044fe0 --- /dev/null +++ b/node_modules/es-errors/range.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./range')} */ +module.exports = RangeError; diff --git a/node_modules/es-errors/ref.d.ts b/node_modules/es-errors/ref.d.ts new file mode 100644 index 0000000..a13107e --- /dev/null +++ b/node_modules/es-errors/ref.d.ts @@ -0,0 +1,3 @@ +declare const ReferenceError: ReferenceErrorConstructor; + +export = ReferenceError; diff --git a/node_modules/es-errors/ref.js b/node_modules/es-errors/ref.js new file mode 100644 index 0000000..d7c430f --- /dev/null +++ b/node_modules/es-errors/ref.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./ref')} */ +module.exports = ReferenceError; diff --git a/node_modules/es-errors/syntax.d.ts b/node_modules/es-errors/syntax.d.ts new file mode 100644 index 0000000..6a0c53c --- /dev/null +++ b/node_modules/es-errors/syntax.d.ts @@ -0,0 +1,3 @@ +declare const SyntaxError: SyntaxErrorConstructor; + +export = SyntaxError; diff --git a/node_modules/es-errors/syntax.js b/node_modules/es-errors/syntax.js new file mode 100644 index 0000000..5f5fdde --- /dev/null +++ b/node_modules/es-errors/syntax.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./syntax')} */ +module.exports = SyntaxError; diff --git a/node_modules/es-errors/test/index.js b/node_modules/es-errors/test/index.js new file mode 100644 index 0000000..1ff0277 --- /dev/null +++ b/node_modules/es-errors/test/index.js @@ -0,0 +1,19 @@ +'use strict'; + +var test = require('tape'); + +var E = require('../'); +var R = require('../range'); +var Ref = require('../ref'); +var S = require('../syntax'); +var T = require('../type'); + +test('errors', function (t) { + t.equal(E, Error); + t.equal(R, RangeError); + t.equal(Ref, ReferenceError); + t.equal(S, SyntaxError); + t.equal(T, TypeError); + + t.end(); +}); diff --git a/node_modules/es-errors/tsconfig.json b/node_modules/es-errors/tsconfig.json new file mode 100644 index 0000000..99dfeb6 --- /dev/null +++ b/node_modules/es-errors/tsconfig.json @@ -0,0 +1,49 @@ +{ + "compilerOptions": { + /* Visit https://aka.ms/tsconfig.json to read more about this file */ + + /* Projects */ + + /* Language and Environment */ + "target": "es5", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */ + // "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */ + // "noLib": true, /* Disable including any library files, including the default lib.d.ts. */ + "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */ + // "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */ + + /* Modules */ + "module": "commonjs", /* Specify what module code is generated. */ + // "rootDir": "./", /* Specify the root folder within your source files. */ + // "moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */ + // "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */ + // "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */ + // "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */ + // "typeRoots": ["types"], /* Specify multiple folders that act like `./node_modules/@types`. */ + "resolveJsonModule": true, /* Enable importing .json files. */ + // "allowArbitraryExtensions": true, /* Enable importing files with any extension, provided a declaration file is present. */ + + /* JavaScript Support */ + "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the `checkJS` option to get errors from these files. */ + "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */ + "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from `node_modules`. Only applicable with `allowJs`. */ + + /* Emit */ + "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */ + "declarationMap": true, /* Create sourcemaps for d.ts files. */ + "noEmit": true, /* Disable emitting files from a compilation. */ + + /* Interop Constraints */ + "allowSyntheticDefaultImports": true, /* Allow `import x from y` when a module doesn't have a default export. */ + "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */ + "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */ + + /* Type Checking */ + "strict": true, /* Enable all strict type-checking options. */ + + /* Completeness */ + // "skipLibCheck": true /* Skip type checking all .d.ts files. */ + }, + "exclude": [ + "coverage", + ], +} diff --git a/node_modules/es-errors/type.d.ts b/node_modules/es-errors/type.d.ts new file mode 100644 index 0000000..576fb51 --- /dev/null +++ b/node_modules/es-errors/type.d.ts @@ -0,0 +1,3 @@ +declare const TypeError: TypeErrorConstructor + +export = TypeError; diff --git a/node_modules/es-errors/type.js b/node_modules/es-errors/type.js new file mode 100644 index 0000000..9769e44 --- /dev/null +++ b/node_modules/es-errors/type.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./type')} */ +module.exports = TypeError; diff --git a/node_modules/es-errors/uri.d.ts b/node_modules/es-errors/uri.d.ts new file mode 100644 index 0000000..c3261c9 --- /dev/null +++ b/node_modules/es-errors/uri.d.ts @@ -0,0 +1,3 @@ +declare const URIError: URIErrorConstructor; + +export = URIError; diff --git a/node_modules/es-errors/uri.js b/node_modules/es-errors/uri.js new file mode 100644 index 0000000..e9cd1c7 --- /dev/null +++ b/node_modules/es-errors/uri.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./uri')} */ +module.exports = URIError; diff --git a/node_modules/es-object-atoms/.eslintrc b/node_modules/es-object-atoms/.eslintrc new file mode 100644 index 0000000..d90a1bc --- /dev/null +++ b/node_modules/es-object-atoms/.eslintrc @@ -0,0 +1,16 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "eqeqeq": ["error", "allow-null"], + "id-length": "off", + "new-cap": ["error", { + "capIsNewExceptions": [ + "RequireObjectCoercible", + "ToObject", + ], + }], + }, +} diff --git a/node_modules/es-object-atoms/.github/FUNDING.yml b/node_modules/es-object-atoms/.github/FUNDING.yml new file mode 100644 index 0000000..352bfda --- /dev/null +++ b/node_modules/es-object-atoms/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/es-object +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with a single custom sponsorship URL diff --git a/node_modules/es-object-atoms/CHANGELOG.md b/node_modules/es-object-atoms/CHANGELOG.md new file mode 100644 index 0000000..fdd2abe --- /dev/null +++ b/node_modules/es-object-atoms/CHANGELOG.md @@ -0,0 +1,37 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.1.1](https://github.com/ljharb/es-object-atoms/compare/v1.1.0...v1.1.1) - 2025-01-14 + +### Commits + +- [types] `ToObject`: improve types [`cfe8c8a`](https://github.com/ljharb/es-object-atoms/commit/cfe8c8a105c44820cb22e26f62d12ef0ad9715c8) + +## [v1.1.0](https://github.com/ljharb/es-object-atoms/compare/v1.0.1...v1.1.0) - 2025-01-14 + +### Commits + +- [New] add `isObject` [`51e4042`](https://github.com/ljharb/es-object-atoms/commit/51e4042df722eb3165f40dc5f4bf33d0197ecb07) + +## [v1.0.1](https://github.com/ljharb/es-object-atoms/compare/v1.0.0...v1.0.1) - 2025-01-13 + +### Commits + +- [Dev Deps] update `@ljharb/eslint-config`, `@ljharb/tsconfig`, `@types/tape`, `auto-changelog`, `tape` [`38ab9eb`](https://github.com/ljharb/es-object-atoms/commit/38ab9eb00b62c2f4668644f5e513d9b414ebd595) +- [types] improve types [`7d1beb8`](https://github.com/ljharb/es-object-atoms/commit/7d1beb887958b78b6a728a210a1c8370ab7e2aa1) +- [Tests] replace `aud` with `npm audit` [`25863ba`](https://github.com/ljharb/es-object-atoms/commit/25863baf99178f1d1ad33d1120498db28631907e) +- [Dev Deps] add missing peer dep [`c012309`](https://github.com/ljharb/es-object-atoms/commit/c0123091287e6132d6f4240496340c427433df28) + +## v1.0.0 - 2024-03-16 + +### Commits + +- Initial implementation, tests, readme, types [`f1499db`](https://github.com/ljharb/es-object-atoms/commit/f1499db7d3e1741e64979c61d645ab3137705e82) +- Initial commit [`99eedc7`](https://github.com/ljharb/es-object-atoms/commit/99eedc7b5fde38a50a28d3c8b724706e3e4c5f6a) +- [meta] rename repo [`fc851fa`](https://github.com/ljharb/es-object-atoms/commit/fc851fa70616d2d182aaf0bd02c2ed7084dea8fa) +- npm init [`b909377`](https://github.com/ljharb/es-object-atoms/commit/b909377c50049bd0ec575562d20b0f9ebae8947f) +- Only apps should have lockfiles [`7249edd`](https://github.com/ljharb/es-object-atoms/commit/7249edd2178c1b9ddfc66ffcc6d07fdf0d28efc1) diff --git a/node_modules/es-object-atoms/LICENSE b/node_modules/es-object-atoms/LICENSE new file mode 100644 index 0000000..f82f389 --- /dev/null +++ b/node_modules/es-object-atoms/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/es-object-atoms/README.md b/node_modules/es-object-atoms/README.md new file mode 100644 index 0000000..447695b --- /dev/null +++ b/node_modules/es-object-atoms/README.md @@ -0,0 +1,63 @@ +# es-object-atoms [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +ES Object-related atoms: Object, ToObject, RequireObjectCoercible. + +## Example + +```js +const assert = require('assert'); + +const $Object = require('es-object-atoms'); +const isObject = require('es-object-atoms/isObject'); +const ToObject = require('es-object-atoms/ToObject'); +const RequireObjectCoercible = require('es-object-atoms/RequireObjectCoercible'); + +assert.equal($Object, Object); +assert.throws(() => ToObject(null), TypeError); +assert.throws(() => ToObject(undefined), TypeError); +assert.throws(() => RequireObjectCoercible(null), TypeError); +assert.throws(() => RequireObjectCoercible(undefined), TypeError); + +assert.equal(isObject(undefined), false); +assert.equal(isObject(null), false); +assert.equal(isObject({}), true); +assert.equal(isObject([]), true); +assert.equal(isObject(function () {}), true); + +assert.deepEqual(RequireObjectCoercible(true), true); +assert.deepEqual(ToObject(true), Object(true)); + +const obj = {}; +assert.equal(RequireObjectCoercible(obj), obj); +assert.equal(ToObject(obj), obj); +``` + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +## Security + +Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report. + +[package-url]: https://npmjs.org/package/es-object-atoms +[npm-version-svg]: https://versionbadg.es/ljharb/es-object-atoms.svg +[deps-svg]: https://david-dm.org/ljharb/es-object-atoms.svg +[deps-url]: https://david-dm.org/ljharb/es-object-atoms +[dev-deps-svg]: https://david-dm.org/ljharb/es-object-atoms/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/es-object-atoms#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/es-object-atoms.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/es-object-atoms.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/es-object.svg +[downloads-url]: https://npm-stat.com/charts.html?package=es-object-atoms +[codecov-image]: https://codecov.io/gh/ljharb/es-object-atoms/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/es-object-atoms/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/es-object-atoms +[actions-url]: https://github.com/ljharb/es-object-atoms/actions diff --git a/node_modules/es-object-atoms/RequireObjectCoercible.d.ts b/node_modules/es-object-atoms/RequireObjectCoercible.d.ts new file mode 100644 index 0000000..7e26c45 --- /dev/null +++ b/node_modules/es-object-atoms/RequireObjectCoercible.d.ts @@ -0,0 +1,3 @@ +declare function RequireObjectCoercible(value: T, optMessage?: string): T; + +export = RequireObjectCoercible; diff --git a/node_modules/es-object-atoms/RequireObjectCoercible.js b/node_modules/es-object-atoms/RequireObjectCoercible.js new file mode 100644 index 0000000..8e191c6 --- /dev/null +++ b/node_modules/es-object-atoms/RequireObjectCoercible.js @@ -0,0 +1,11 @@ +'use strict'; + +var $TypeError = require('es-errors/type'); + +/** @type {import('./RequireObjectCoercible')} */ +module.exports = function RequireObjectCoercible(value) { + if (value == null) { + throw new $TypeError((arguments.length > 0 && arguments[1]) || ('Cannot call method on ' + value)); + } + return value; +}; diff --git a/node_modules/es-object-atoms/ToObject.d.ts b/node_modules/es-object-atoms/ToObject.d.ts new file mode 100644 index 0000000..d6dd302 --- /dev/null +++ b/node_modules/es-object-atoms/ToObject.d.ts @@ -0,0 +1,7 @@ +declare function ToObject(value: number): Number; +declare function ToObject(value: boolean): Boolean; +declare function ToObject(value: string): String; +declare function ToObject(value: bigint): BigInt; +declare function ToObject(value: T): T; + +export = ToObject; diff --git a/node_modules/es-object-atoms/ToObject.js b/node_modules/es-object-atoms/ToObject.js new file mode 100644 index 0000000..2b99a7d --- /dev/null +++ b/node_modules/es-object-atoms/ToObject.js @@ -0,0 +1,10 @@ +'use strict'; + +var $Object = require('./'); +var RequireObjectCoercible = require('./RequireObjectCoercible'); + +/** @type {import('./ToObject')} */ +module.exports = function ToObject(value) { + RequireObjectCoercible(value); + return $Object(value); +}; diff --git a/node_modules/es-object-atoms/index.d.ts b/node_modules/es-object-atoms/index.d.ts new file mode 100644 index 0000000..8bdbfc8 --- /dev/null +++ b/node_modules/es-object-atoms/index.d.ts @@ -0,0 +1,3 @@ +declare const Object: ObjectConstructor; + +export = Object; diff --git a/node_modules/es-object-atoms/index.js b/node_modules/es-object-atoms/index.js new file mode 100644 index 0000000..1d33cef --- /dev/null +++ b/node_modules/es-object-atoms/index.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('.')} */ +module.exports = Object; diff --git a/node_modules/es-object-atoms/isObject.d.ts b/node_modules/es-object-atoms/isObject.d.ts new file mode 100644 index 0000000..43bee3b --- /dev/null +++ b/node_modules/es-object-atoms/isObject.d.ts @@ -0,0 +1,3 @@ +declare function isObject(x: unknown): x is object; + +export = isObject; diff --git a/node_modules/es-object-atoms/isObject.js b/node_modules/es-object-atoms/isObject.js new file mode 100644 index 0000000..ec49bf1 --- /dev/null +++ b/node_modules/es-object-atoms/isObject.js @@ -0,0 +1,6 @@ +'use strict'; + +/** @type {import('./isObject')} */ +module.exports = function isObject(x) { + return !!x && (typeof x === 'function' || typeof x === 'object'); +}; diff --git a/node_modules/es-object-atoms/package.json b/node_modules/es-object-atoms/package.json new file mode 100644 index 0000000..f4cec71 --- /dev/null +++ b/node_modules/es-object-atoms/package.json @@ -0,0 +1,80 @@ +{ + "name": "es-object-atoms", + "version": "1.1.1", + "description": "ES Object-related atoms: Object, ToObject, RequireObjectCoercible", + "main": "index.js", + "exports": { + ".": "./index.js", + "./RequireObjectCoercible": "./RequireObjectCoercible.js", + "./isObject": "./isObject.js", + "./ToObject": "./ToObject.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "pretest": "npm run lint", + "test": "npm run tests-only", + "tests-only": "nyc tape 'test/**/*.js'", + "posttest": "npx npm@\">= 10.2\" audit --production", + "prelint": "evalmd README.md", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc -p . && eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git' | grep -v dist/)", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/es-object-atoms.git" + }, + "keywords": [ + "javascript", + "ecmascript", + "object", + "toobject", + "coercible" + ], + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/es-object-atoms/issues" + }, + "homepage": "https://github.com/ljharb/es-object-atoms#readme", + "dependencies": { + "es-errors": "^1.3.0" + }, + "devDependencies": { + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.3", + "@types/tape": "^5.8.1", + "auto-changelog": "^2.5.0", + "eclint": "^2.8.1", + "encoding": "^0.1.13", + "eslint": "^8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/es-object-atoms/test/index.js b/node_modules/es-object-atoms/test/index.js new file mode 100644 index 0000000..430b705 --- /dev/null +++ b/node_modules/es-object-atoms/test/index.js @@ -0,0 +1,38 @@ +'use strict'; + +var test = require('tape'); + +var $Object = require('../'); +var isObject = require('../isObject'); +var ToObject = require('../ToObject'); +var RequireObjectCoercible = require('..//RequireObjectCoercible'); + +test('errors', function (t) { + t.equal($Object, Object); + // @ts-expect-error + t['throws'](function () { ToObject(null); }, TypeError); + // @ts-expect-error + t['throws'](function () { ToObject(undefined); }, TypeError); + // @ts-expect-error + t['throws'](function () { RequireObjectCoercible(null); }, TypeError); + // @ts-expect-error + t['throws'](function () { RequireObjectCoercible(undefined); }, TypeError); + + t.deepEqual(RequireObjectCoercible(true), true); + t.deepEqual(ToObject(true), Object(true)); + t.deepEqual(ToObject(42), Object(42)); + var f = function () {}; + t.equal(ToObject(f), f); + + t.equal(isObject(undefined), false); + t.equal(isObject(null), false); + t.equal(isObject({}), true); + t.equal(isObject([]), true); + t.equal(isObject(function () {}), true); + + var obj = {}; + t.equal(RequireObjectCoercible(obj), obj); + t.equal(ToObject(obj), obj); + + t.end(); +}); diff --git a/node_modules/es-object-atoms/tsconfig.json b/node_modules/es-object-atoms/tsconfig.json new file mode 100644 index 0000000..1f73cb7 --- /dev/null +++ b/node_modules/es-object-atoms/tsconfig.json @@ -0,0 +1,6 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "es5", + }, +} diff --git a/node_modules/es-set-tostringtag/.eslintrc b/node_modules/es-set-tostringtag/.eslintrc new file mode 100644 index 0000000..2612ed8 --- /dev/null +++ b/node_modules/es-set-tostringtag/.eslintrc @@ -0,0 +1,13 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "new-cap": [2, { + "capIsNewExceptions": [ + "GetIntrinsic", + ], + }], + }, +} diff --git a/node_modules/es-set-tostringtag/.nycrc b/node_modules/es-set-tostringtag/.nycrc new file mode 100644 index 0000000..bdd626c --- /dev/null +++ b/node_modules/es-set-tostringtag/.nycrc @@ -0,0 +1,9 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/es-set-tostringtag/CHANGELOG.md b/node_modules/es-set-tostringtag/CHANGELOG.md new file mode 100644 index 0000000..00bdc03 --- /dev/null +++ b/node_modules/es-set-tostringtag/CHANGELOG.md @@ -0,0 +1,67 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v2.1.0](https://github.com/es-shims/es-set-tostringtag/compare/v2.0.3...v2.1.0) - 2025-01-01 + +### Commits + +- [actions] split out node 10-20, and 20+ [`ede033c`](https://github.com/es-shims/es-set-tostringtag/commit/ede033cc4e506c3966d2d482d4ac5987e329162a) +- [types] use shared config [`28ef164`](https://github.com/es-shims/es-set-tostringtag/commit/28ef164ad7c5bc21837c79f7ef25542a1f258ade) +- [New] add `nonConfigurable` option [`3bee3f0`](https://github.com/es-shims/es-set-tostringtag/commit/3bee3f04caddd318f3932912212ed20b2d62aad7) +- [Fix] validate boolean option argument [`3c8a609`](https://github.com/es-shims/es-set-tostringtag/commit/3c8a609c795a305ccca163f0ff6956caa88cdc0e) +- [Dev Deps] update `@arethetypeswrong/cli`, `@ljharb/eslint-config`, `@ljharb/tsconfig`, `@types/get-intrinsic`, `@types/tape`, `auto-changelog`, `tape` [`501a969`](https://github.com/es-shims/es-set-tostringtag/commit/501a96998484226e07f5ffd447e8f305a998f1d8) +- [Tests] add coverage [`18af289`](https://github.com/es-shims/es-set-tostringtag/commit/18af2897b4e937373c9b8c8831bc338932246470) +- [readme] document `force` option [`bd446a1`](https://github.com/es-shims/es-set-tostringtag/commit/bd446a107b71a2270278442e5124f45590d3ee64) +- [Tests] use `@arethetypeswrong/cli` [`7c2c2fa`](https://github.com/es-shims/es-set-tostringtag/commit/7c2c2fa3cca0f4d263603adb75426b239514598f) +- [Tests] replace `aud` with `npm audit` [`9e372d7`](https://github.com/es-shims/es-set-tostringtag/commit/9e372d7e6db3dab405599a14d9074a99a03b8242) +- [Deps] update `get-intrinsic` [`7df1216`](https://github.com/es-shims/es-set-tostringtag/commit/7df12167295385c2a547410e687cb0c04f3a34b9) +- [Deps] update `hasown` [`993a7d2`](https://github.com/es-shims/es-set-tostringtag/commit/993a7d200e2059fd857ec1a25d0a49c2c34ae6e2) +- [Dev Deps] add missing peer dep [`148ed8d`](https://github.com/es-shims/es-set-tostringtag/commit/148ed8db99a7a94f9af3823fd083e6e437fa1587) + +## [v2.0.3](https://github.com/es-shims/es-set-tostringtag/compare/v2.0.2...v2.0.3) - 2024-02-20 + +### Commits + +- add types [`d538513`](https://github.com/es-shims/es-set-tostringtag/commit/d5385133592a32a0a416cb535327918af7fbc4ad) +- [Deps] update `get-intrinsic`, `has-tostringtag`, `hasown` [`d129b29`](https://github.com/es-shims/es-set-tostringtag/commit/d129b29536bccc8a9d03a47887ca4d1f7ad0c5b9) +- [Dev Deps] update `aud`, `npmignore`, `tape` [`132ed23`](https://github.com/es-shims/es-set-tostringtag/commit/132ed23c964a41ed55e4ab4a5a2c3fe185e821c1) +- [Tests] fix hasOwn require [`f89c831`](https://github.com/es-shims/es-set-tostringtag/commit/f89c831fe5f3edf1f979c597b56fee1be6111f56) + +## [v2.0.2](https://github.com/es-shims/es-set-tostringtag/compare/v2.0.1...v2.0.2) - 2023-10-20 + +### Commits + +- [Refactor] use `hasown` instead of `has` [`0cc6c4e`](https://github.com/es-shims/es-set-tostringtag/commit/0cc6c4e61fd13e8f00b85424ae6e541ebf289e74) +- [Dev Deps] update `@ljharb/eslint-config`, `aud`, `tape` [`70e447c`](https://github.com/es-shims/es-set-tostringtag/commit/70e447cf9f82b896ddf359fda0a0498c16cf3ed2) +- [Deps] update `get-intrinsic` [`826aab7`](https://github.com/es-shims/es-set-tostringtag/commit/826aab76180392871c8efa99acc0f0bbf775c64e) + +## [v2.0.1](https://github.com/es-shims/es-set-tostringtag/compare/v2.0.0...v2.0.1) - 2023-01-05 + +### Fixed + +- [Fix] move `has` to prod deps [`#2`](https://github.com/es-shims/es-set-tostringtag/issues/2) + +### Commits + +- [Dev Deps] update `@ljharb/eslint-config` [`b9eecd2`](https://github.com/es-shims/es-set-tostringtag/commit/b9eecd23c10b7b43ba75089ac8ff8cc6b295798b) + +## [v2.0.0](https://github.com/es-shims/es-set-tostringtag/compare/v1.0.0...v2.0.0) - 2022-12-21 + +### Commits + +- [Tests] refactor tests [`168dcfb`](https://github.com/es-shims/es-set-tostringtag/commit/168dcfbb535c279dc48ccdc89419155125aaec18) +- [Breaking] do not set toStringTag if it is already set [`226ab87`](https://github.com/es-shims/es-set-tostringtag/commit/226ab874192c625d9e5f0e599d3f60d2b2aa83b5) +- [New] add `force` option to set even if already set [`1abd4ec`](https://github.com/es-shims/es-set-tostringtag/commit/1abd4ecb282f19718c4518284b0293a343564505) + +## v1.0.0 - 2022-12-21 + +### Commits + +- Initial implementation, tests, readme [`a0e1147`](https://github.com/es-shims/es-set-tostringtag/commit/a0e11473f79a233b46374525c962ea1b4d42418a) +- Initial commit [`ffd4aff`](https://github.com/es-shims/es-set-tostringtag/commit/ffd4afffbeebf29aff0d87a7cfc3f7844e09fe68) +- npm init [`fffe5bd`](https://github.com/es-shims/es-set-tostringtag/commit/fffe5bd1d1146d084730a387a9c672371f4a8fff) +- Only apps should have lockfiles [`d363871`](https://github.com/es-shims/es-set-tostringtag/commit/d36387139465623e161a15dbd39120537f150c62) diff --git a/node_modules/es-set-tostringtag/LICENSE b/node_modules/es-set-tostringtag/LICENSE new file mode 100644 index 0000000..c2a8460 --- /dev/null +++ b/node_modules/es-set-tostringtag/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2022 ECMAScript Shims + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/es-set-tostringtag/README.md b/node_modules/es-set-tostringtag/README.md new file mode 100644 index 0000000..c27bc9f --- /dev/null +++ b/node_modules/es-set-tostringtag/README.md @@ -0,0 +1,53 @@ +# es-set-tostringtag [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +A helper to optimistically set Symbol.toStringTag, when possible. + +## Example +Most common usage: +```js +var assert = require('assert'); +var setToStringTag = require('es-set-tostringtag'); + +var obj = {}; + +assert.equal(Object.prototype.toString.call(obj), '[object Object]'); + +setToStringTag(obj, 'tagged!'); + +assert.equal(Object.prototype.toString.call(obj), '[object tagged!]'); +``` + +## Options +An optional options argument can be provided as the third argument. The available options are: + +### `force` +If the `force` option is set to `true`, the toStringTag will be set even if it is already set. + +### `nonConfigurable` +If the `nonConfigurable` option is set to `true`, the toStringTag will be defined as non-configurable when possible. + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +[package-url]: https://npmjs.com/package/es-set-tostringtag +[npm-version-svg]: https://versionbadg.es/es-shims/es-set-tostringtag.svg +[deps-svg]: https://david-dm.org/es-shims/es-set-tostringtag.svg +[deps-url]: https://david-dm.org/es-shims/es-set-tostringtag +[dev-deps-svg]: https://david-dm.org/es-shims/es-set-tostringtag/dev-status.svg +[dev-deps-url]: https://david-dm.org/es-shims/es-set-tostringtag#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/es-set-tostringtag.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/es-set-tostringtag.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/es-set-tostringtag.svg +[downloads-url]: https://npm-stat.com/charts.html?package=es-set-tostringtag +[codecov-image]: https://codecov.io/gh/es-shims/es-set-tostringtag/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/es-shims/es-set-tostringtag/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/es-set-tostringtag +[actions-url]: https://github.com/es-shims/es-set-tostringtag/actions diff --git a/node_modules/es-set-tostringtag/index.d.ts b/node_modules/es-set-tostringtag/index.d.ts new file mode 100644 index 0000000..c9a8fc4 --- /dev/null +++ b/node_modules/es-set-tostringtag/index.d.ts @@ -0,0 +1,10 @@ +declare function setToStringTag( + object: object & { [Symbol.toStringTag]?: unknown }, + value: string | unknown, + options?: { + force?: boolean; + nonConfigurable?: boolean; + }, +): void; + +export = setToStringTag; \ No newline at end of file diff --git a/node_modules/es-set-tostringtag/index.js b/node_modules/es-set-tostringtag/index.js new file mode 100644 index 0000000..6b6b49c --- /dev/null +++ b/node_modules/es-set-tostringtag/index.js @@ -0,0 +1,35 @@ +'use strict'; + +var GetIntrinsic = require('get-intrinsic'); + +var $defineProperty = GetIntrinsic('%Object.defineProperty%', true); + +var hasToStringTag = require('has-tostringtag/shams')(); +var hasOwn = require('hasown'); +var $TypeError = require('es-errors/type'); + +var toStringTag = hasToStringTag ? Symbol.toStringTag : null; + +/** @type {import('.')} */ +module.exports = function setToStringTag(object, value) { + var overrideIfSet = arguments.length > 2 && !!arguments[2] && arguments[2].force; + var nonConfigurable = arguments.length > 2 && !!arguments[2] && arguments[2].nonConfigurable; + if ( + (typeof overrideIfSet !== 'undefined' && typeof overrideIfSet !== 'boolean') + || (typeof nonConfigurable !== 'undefined' && typeof nonConfigurable !== 'boolean') + ) { + throw new $TypeError('if provided, the `overrideIfSet` and `nonConfigurable` options must be booleans'); + } + if (toStringTag && (overrideIfSet || !hasOwn(object, toStringTag))) { + if ($defineProperty) { + $defineProperty(object, toStringTag, { + configurable: !nonConfigurable, + enumerable: false, + value: value, + writable: false + }); + } else { + object[toStringTag] = value; // eslint-disable-line no-param-reassign + } + } +}; diff --git a/node_modules/es-set-tostringtag/package.json b/node_modules/es-set-tostringtag/package.json new file mode 100644 index 0000000..277c3e5 --- /dev/null +++ b/node_modules/es-set-tostringtag/package.json @@ -0,0 +1,78 @@ +{ + "name": "es-set-tostringtag", + "version": "2.1.0", + "description": "A helper to optimistically set Symbol.toStringTag, when possible.", + "main": "index.js", + "exports": { + ".": "./index.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prelint": "evalmd README.md", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc -p . && attw -P", + "pretest": "npm run lint", + "tests-only": "nyc tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "npx npm@\">= 10.2\" audit --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/es-shims/es-set-tostringtag.git" + }, + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/es-shims/es-set-tostringtag/issues" + }, + "homepage": "https://github.com/es-shims/es-set-tostringtag#readme", + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.2", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.3", + "@types/get-intrinsic": "^1.2.3", + "@types/has-symbols": "^1.0.2", + "@types/tape": "^5.8.0", + "auto-changelog": "^2.5.0", + "encoding": "^0.1.13", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "dependencies": { + "es-errors": "^1.3.0", + "get-intrinsic": "^1.2.6", + "has-tostringtag": "^1.0.2", + "hasown": "^2.0.2" + }, + "engines": { + "node": ">= 0.4" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "testling": { + "files": "./test/index.js" + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + } +} diff --git a/node_modules/es-set-tostringtag/test/index.js b/node_modules/es-set-tostringtag/test/index.js new file mode 100644 index 0000000..f1757b3 --- /dev/null +++ b/node_modules/es-set-tostringtag/test/index.js @@ -0,0 +1,85 @@ +'use strict'; + +var test = require('tape'); +var hasToStringTag = require('has-tostringtag/shams')(); +var hasOwn = require('hasown'); + +var setToStringTag = require('../'); + +test('setToStringTag', function (t) { + t.equal(typeof setToStringTag, 'function', 'is a function'); + + /** @type {{ [Symbol.toStringTag]?: typeof sentinel }} */ + var obj = {}; + var sentinel = {}; + + setToStringTag(obj, sentinel); + + t['throws']( + // @ts-expect-error + function () { setToStringTag(obj, sentinel, { force: 'yes' }); }, + TypeError, + 'throws if options is not an object' + ); + + t.test('has Symbol.toStringTag', { skip: !hasToStringTag }, function (st) { + st.ok(hasOwn(obj, Symbol.toStringTag), 'has toStringTag property'); + + st.equal(obj[Symbol.toStringTag], sentinel, 'toStringTag property is as expected'); + + st.equal(String(obj), '[object Object]', 'toStringTag works'); + + /** @type {{ [Symbol.toStringTag]?: string }} */ + var tagged = {}; + tagged[Symbol.toStringTag] = 'already tagged'; + st.equal(String(tagged), '[object already tagged]', 'toStringTag works'); + + setToStringTag(tagged, 'new tag'); + st.equal(String(tagged), '[object already tagged]', 'toStringTag is unchanged'); + + setToStringTag(tagged, 'new tag', { force: true }); + st.equal(String(tagged), '[object new tag]', 'toStringTag is changed with force: true'); + + st.deepEqual( + Object.getOwnPropertyDescriptor(tagged, Symbol.toStringTag), + { + configurable: true, + enumerable: false, + value: 'new tag', + writable: false + }, + 'has expected property descriptor' + ); + + setToStringTag(tagged, 'new tag', { force: true, nonConfigurable: true }); + st.deepEqual( + Object.getOwnPropertyDescriptor(tagged, Symbol.toStringTag), + { + configurable: false, + enumerable: false, + value: 'new tag', + writable: false + }, + 'is nonconfigurable' + ); + + st.end(); + }); + + t.test('does not have Symbol.toStringTag', { skip: hasToStringTag }, function (st) { + var passed = true; + for (var key in obj) { // eslint-disable-line no-restricted-syntax + if (hasOwn(obj, key)) { + st.fail('object has own key ' + key); + passed = false; + } + } + if (passed) { + st.ok(true, 'object has no enumerable own keys'); + } + + st.end(); + }); + + t.end(); +}); diff --git a/node_modules/es-set-tostringtag/tsconfig.json b/node_modules/es-set-tostringtag/tsconfig.json new file mode 100644 index 0000000..d9a6668 --- /dev/null +++ b/node_modules/es-set-tostringtag/tsconfig.json @@ -0,0 +1,9 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "es2021", + }, + "exclude": [ + "coverage", + ], +} diff --git a/node_modules/fetch-blob/LICENSE b/node_modules/fetch-blob/LICENSE new file mode 100644 index 0000000..0d31723 --- /dev/null +++ b/node_modules/fetch-blob/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2019 David Frank + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/fetch-blob/README.md b/node_modules/fetch-blob/README.md new file mode 100644 index 0000000..fb3e198 --- /dev/null +++ b/node_modules/fetch-blob/README.md @@ -0,0 +1,106 @@ +# fetch-blob + +[![npm version][npm-image]][npm-url] +[![build status][ci-image]][ci-url] +[![coverage status][codecov-image]][codecov-url] +[![install size][install-size-image]][install-size-url] + +A Blob implementation in Node.js, originally from [node-fetch](https://github.com/node-fetch/node-fetch). + +## Installation + +```sh +npm install fetch-blob +``` + +

+ Upgrading from 2x to 3x + + Updating from 2 to 3 should be a breeze since there is not many changes to the blob specification. + The major cause of a major release is coding standards. + - internal WeakMaps was replaced with private fields + - internal Buffer.from was replaced with TextEncoder/Decoder + - internal buffers was replaced with Uint8Arrays + - CommonJS was replaced with ESM + - The node stream returned by calling `blob.stream()` was replaced with whatwg streams + - (Read "Differences from other blobs" for more info.) + +
+ +
+ Differences from other Blobs + + - Unlike NodeJS `buffer.Blob` (Added in: v15.7.0) and browser native Blob this polyfilled version can't be sent via PostMessage + - This blob version is more arbitrary, it can be constructed with blob parts that isn't a instance of itself + it has to look and behave as a blob to be accepted as a blob part. + - The benefit of this is that you can create other types of blobs that don't contain any internal data that has to be read in other ways, such as the `BlobDataItem` created in `from.js` that wraps a file path into a blob-like item and read lazily (nodejs plans to [implement this][fs-blobs] as well) + - The `blob.stream()` is the most noticeable differences. It returns a WHATWG stream now. to keep it as a node stream you would have to do: + + ```js + import {Readable} from 'stream' + const stream = Readable.from(blob.stream()) + ``` +
+ +## Usage + +```js +// Ways to import +// (PS it's dependency free ESM package so regular http-import from CDN works too) +import Blob from 'fetch-blob' +import File from 'fetch-blob/file.js' + +import {Blob} from 'fetch-blob' +import {File} from 'fetch-blob/file.js' + +const {Blob} = await import('fetch-blob') + + +// Ways to read the blob: +const blob = new Blob(['hello, world']) + +await blob.text() +await blob.arrayBuffer() +for await (let chunk of blob.stream()) { ... } +blob.stream().getReader().read() +blob.stream().getReader({mode: 'byob'}).read(view) +``` + +### Blob part backed up by filesystem + +`fetch-blob/from.js` comes packed with tools to convert any filepath into either a Blob or a File +It will not read the content into memory. It will only stat the file for last modified date and file size. + +```js +// The default export is sync and use fs.stat to retrieve size & last modified as a blob +import blobFromSync from 'fetch-blob/from.js' +import {File, Blob, blobFrom, blobFromSync, fileFrom, fileFromSync} from 'fetch-blob/from.js' + +const fsFile = fileFromSync('./2-GiB-file.bin', 'application/octet-stream') +const fsBlob = await blobFrom('./2-GiB-file.mp4') + +// Not a 4 GiB memory snapshot, just holds references +// points to where data is located on the disk +const blob = new Blob([fsFile, fsBlob, 'memory', new Uint8Array(10)]) +console.log(blob.size) // ~4 GiB +``` + +`blobFrom|blobFromSync|fileFrom|fileFromSync(path, [mimetype])` + +### Creating Blobs backed up by other async sources +Our Blob & File class are more generic then any other polyfills in the way that it can accept any blob look-a-like item +An example of this is that our blob implementation can be constructed with parts coming from [BlobDataItem](https://github.com/node-fetch/fetch-blob/blob/8ef89adad40d255a3bbd55cf38b88597c1cd5480/from.js#L32) (aka a filepath) or from [buffer.Blob](https://nodejs.org/api/buffer.html#buffer_new_buffer_blob_sources_options), It dose not have to implement all the methods - just enough that it can be read/understood by our Blob implementation. The minium requirements is that it has `Symbol.toStringTag`, `size`, `slice()` and either a `stream()` or a `arrayBuffer()` method. If you then wrap it in our Blob or File `new Blob([blobDataItem])` then you get all of the other methods that should be implemented in a blob or file + +An example of this could be to create a file or blob like item coming from a remote HTTP request. Or from a DataBase + +See the [MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/Blob) and [tests](https://github.com/node-fetch/fetch-blob/blob/master/test.js) for more details of how to use the Blob. + +[npm-image]: https://flat.badgen.net/npm/v/fetch-blob +[npm-url]: https://www.npmjs.com/package/fetch-blob +[ci-image]: https://github.com/node-fetch/fetch-blob/workflows/CI/badge.svg +[ci-url]: https://github.com/node-fetch/fetch-blob/actions +[codecov-image]: https://flat.badgen.net/codecov/c/github/node-fetch/fetch-blob/master +[codecov-url]: https://codecov.io/gh/node-fetch/fetch-blob +[install-size-image]: https://flat.badgen.net/packagephobia/install/fetch-blob +[install-size-url]: https://packagephobia.now.sh/result?p=fetch-blob +[fs-blobs]: https://github.com/nodejs/node/issues/37340 diff --git a/node_modules/fetch-blob/file.d.ts b/node_modules/fetch-blob/file.d.ts new file mode 100644 index 0000000..d4b89bc --- /dev/null +++ b/node_modules/fetch-blob/file.d.ts @@ -0,0 +1,2 @@ +/** @type {typeof globalThis.File} */ export const File: typeof globalThis.File; +export default File; diff --git a/node_modules/fetch-blob/file.js b/node_modules/fetch-blob/file.js new file mode 100644 index 0000000..7b26538 --- /dev/null +++ b/node_modules/fetch-blob/file.js @@ -0,0 +1,49 @@ +import Blob from './index.js' + +const _File = class File extends Blob { + #lastModified = 0 + #name = '' + + /** + * @param {*[]} fileBits + * @param {string} fileName + * @param {{lastModified?: number, type?: string}} options + */// @ts-ignore + constructor (fileBits, fileName, options = {}) { + if (arguments.length < 2) { + throw new TypeError(`Failed to construct 'File': 2 arguments required, but only ${arguments.length} present.`) + } + super(fileBits, options) + + if (options === null) options = {} + + // Simulate WebIDL type casting for NaN value in lastModified option. + const lastModified = options.lastModified === undefined ? Date.now() : Number(options.lastModified) + if (!Number.isNaN(lastModified)) { + this.#lastModified = lastModified + } + + this.#name = String(fileName) + } + + get name () { + return this.#name + } + + get lastModified () { + return this.#lastModified + } + + get [Symbol.toStringTag] () { + return 'File' + } + + static [Symbol.hasInstance] (object) { + return !!object && object instanceof Blob && + /^(File)$/.test(object[Symbol.toStringTag]) + } +} + +/** @type {typeof globalThis.File} */// @ts-ignore +export const File = _File +export default File diff --git a/node_modules/fetch-blob/from.d.ts b/node_modules/fetch-blob/from.d.ts new file mode 100644 index 0000000..530b99b --- /dev/null +++ b/node_modules/fetch-blob/from.d.ts @@ -0,0 +1,26 @@ +export default blobFromSync; +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + */ +export function blobFromSync(path: string, type?: string): Blob; +import File from "./file.js"; +import Blob from "./index.js"; +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + * @returns {Promise} + */ +export function blobFrom(path: string, type?: string): Promise; +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + * @returns {Promise} + */ +export function fileFrom(path: string, type?: string): Promise; +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + */ +export function fileFromSync(path: string, type?: string): File; +export { File, Blob }; diff --git a/node_modules/fetch-blob/from.js b/node_modules/fetch-blob/from.js new file mode 100644 index 0000000..9eaf8bf --- /dev/null +++ b/node_modules/fetch-blob/from.js @@ -0,0 +1,100 @@ +import { statSync, createReadStream, promises as fs } from 'node:fs' +import { basename } from 'node:path' +import DOMException from 'node-domexception' + +import File from './file.js' +import Blob from './index.js' + +const { stat } = fs + +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + */ +const blobFromSync = (path, type) => fromBlob(statSync(path), path, type) + +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + * @returns {Promise} + */ +const blobFrom = (path, type) => stat(path).then(stat => fromBlob(stat, path, type)) + +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + * @returns {Promise} + */ +const fileFrom = (path, type) => stat(path).then(stat => fromFile(stat, path, type)) + +/** + * @param {string} path filepath on the disk + * @param {string} [type] mimetype to use + */ +const fileFromSync = (path, type) => fromFile(statSync(path), path, type) + +// @ts-ignore +const fromBlob = (stat, path, type = '') => new Blob([new BlobDataItem({ + path, + size: stat.size, + lastModified: stat.mtimeMs, + start: 0 +})], { type }) + +// @ts-ignore +const fromFile = (stat, path, type = '') => new File([new BlobDataItem({ + path, + size: stat.size, + lastModified: stat.mtimeMs, + start: 0 +})], basename(path), { type, lastModified: stat.mtimeMs }) + +/** + * This is a blob backed up by a file on the disk + * with minium requirement. Its wrapped around a Blob as a blobPart + * so you have no direct access to this. + * + * @private + */ +class BlobDataItem { + #path + #start + + constructor (options) { + this.#path = options.path + this.#start = options.start + this.size = options.size + this.lastModified = options.lastModified + } + + /** + * Slicing arguments is first validated and formatted + * to not be out of range by Blob.prototype.slice + */ + slice (start, end) { + return new BlobDataItem({ + path: this.#path, + lastModified: this.lastModified, + size: end - start, + start: this.#start + start + }) + } + + async * stream () { + const { mtimeMs } = await stat(this.#path) + if (mtimeMs > this.lastModified) { + throw new DOMException('The requested file could not be read, typically due to permission problems that have occurred after a reference to a file was acquired.', 'NotReadableError') + } + yield * createReadStream(this.#path, { + start: this.#start, + end: this.#start + this.size - 1 + }) + } + + get [Symbol.toStringTag] () { + return 'Blob' + } +} + +export default blobFromSync +export { File, Blob, blobFrom, blobFromSync, fileFrom, fileFromSync } diff --git a/node_modules/fetch-blob/index.d.ts b/node_modules/fetch-blob/index.d.ts new file mode 100644 index 0000000..7a68957 --- /dev/null +++ b/node_modules/fetch-blob/index.d.ts @@ -0,0 +1,3 @@ +/** @type {typeof globalThis.Blob} */ +export const Blob: typeof globalThis.Blob; +export default Blob; diff --git a/node_modules/fetch-blob/index.js b/node_modules/fetch-blob/index.js new file mode 100644 index 0000000..2542ac2 --- /dev/null +++ b/node_modules/fetch-blob/index.js @@ -0,0 +1,250 @@ +/*! fetch-blob. MIT License. Jimmy Wärting */ + +// TODO (jimmywarting): in the feature use conditional loading with top level await (requires 14.x) +// Node has recently added whatwg stream into core + +import './streams.cjs' + +// 64 KiB (same size chrome slice theirs blob into Uint8array's) +const POOL_SIZE = 65536 + +/** @param {(Blob | Uint8Array)[]} parts */ +async function * toIterator (parts, clone = true) { + for (const part of parts) { + if ('stream' in part) { + yield * (/** @type {AsyncIterableIterator} */ (part.stream())) + } else if (ArrayBuffer.isView(part)) { + if (clone) { + let position = part.byteOffset + const end = part.byteOffset + part.byteLength + while (position !== end) { + const size = Math.min(end - position, POOL_SIZE) + const chunk = part.buffer.slice(position, position + size) + position += chunk.byteLength + yield new Uint8Array(chunk) + } + } else { + yield part + } + /* c8 ignore next 10 */ + } else { + // For blobs that have arrayBuffer but no stream method (nodes buffer.Blob) + let position = 0, b = (/** @type {Blob} */ (part)) + while (position !== b.size) { + const chunk = b.slice(position, Math.min(b.size, position + POOL_SIZE)) + const buffer = await chunk.arrayBuffer() + position += buffer.byteLength + yield new Uint8Array(buffer) + } + } + } +} + +const _Blob = class Blob { + /** @type {Array.<(Blob|Uint8Array)>} */ + #parts = [] + #type = '' + #size = 0 + #endings = 'transparent' + + /** + * The Blob() constructor returns a new Blob object. The content + * of the blob consists of the concatenation of the values given + * in the parameter array. + * + * @param {*} blobParts + * @param {{ type?: string, endings?: string }} [options] + */ + constructor (blobParts = [], options = {}) { + if (typeof blobParts !== 'object' || blobParts === null) { + throw new TypeError('Failed to construct \'Blob\': The provided value cannot be converted to a sequence.') + } + + if (typeof blobParts[Symbol.iterator] !== 'function') { + throw new TypeError('Failed to construct \'Blob\': The object must have a callable @@iterator property.') + } + + if (typeof options !== 'object' && typeof options !== 'function') { + throw new TypeError('Failed to construct \'Blob\': parameter 2 cannot convert to dictionary.') + } + + if (options === null) options = {} + + const encoder = new TextEncoder() + for (const element of blobParts) { + let part + if (ArrayBuffer.isView(element)) { + part = new Uint8Array(element.buffer.slice(element.byteOffset, element.byteOffset + element.byteLength)) + } else if (element instanceof ArrayBuffer) { + part = new Uint8Array(element.slice(0)) + } else if (element instanceof Blob) { + part = element + } else { + part = encoder.encode(`${element}`) + } + + this.#size += ArrayBuffer.isView(part) ? part.byteLength : part.size + this.#parts.push(part) + } + + this.#endings = `${options.endings === undefined ? 'transparent' : options.endings}` + const type = options.type === undefined ? '' : String(options.type) + this.#type = /^[\x20-\x7E]*$/.test(type) ? type : '' + } + + /** + * The Blob interface's size property returns the + * size of the Blob in bytes. + */ + get size () { + return this.#size + } + + /** + * The type property of a Blob object returns the MIME type of the file. + */ + get type () { + return this.#type + } + + /** + * The text() method in the Blob interface returns a Promise + * that resolves with a string containing the contents of + * the blob, interpreted as UTF-8. + * + * @return {Promise} + */ + async text () { + // More optimized than using this.arrayBuffer() + // that requires twice as much ram + const decoder = new TextDecoder() + let str = '' + for await (const part of toIterator(this.#parts, false)) { + str += decoder.decode(part, { stream: true }) + } + // Remaining + str += decoder.decode() + return str + } + + /** + * The arrayBuffer() method in the Blob interface returns a + * Promise that resolves with the contents of the blob as + * binary data contained in an ArrayBuffer. + * + * @return {Promise} + */ + async arrayBuffer () { + // Easier way... Just a unnecessary overhead + // const view = new Uint8Array(this.size); + // await this.stream().getReader({mode: 'byob'}).read(view); + // return view.buffer; + + const data = new Uint8Array(this.size) + let offset = 0 + for await (const chunk of toIterator(this.#parts, false)) { + data.set(chunk, offset) + offset += chunk.length + } + + return data.buffer + } + + stream () { + const it = toIterator(this.#parts, true) + + return new globalThis.ReadableStream({ + // @ts-ignore + type: 'bytes', + async pull (ctrl) { + const chunk = await it.next() + chunk.done ? ctrl.close() : ctrl.enqueue(chunk.value) + }, + + async cancel () { + await it.return() + } + }) + } + + /** + * The Blob interface's slice() method creates and returns a + * new Blob object which contains data from a subset of the + * blob on which it's called. + * + * @param {number} [start] + * @param {number} [end] + * @param {string} [type] + */ + slice (start = 0, end = this.size, type = '') { + const { size } = this + + let relativeStart = start < 0 ? Math.max(size + start, 0) : Math.min(start, size) + let relativeEnd = end < 0 ? Math.max(size + end, 0) : Math.min(end, size) + + const span = Math.max(relativeEnd - relativeStart, 0) + const parts = this.#parts + const blobParts = [] + let added = 0 + + for (const part of parts) { + // don't add the overflow to new blobParts + if (added >= span) { + break + } + + const size = ArrayBuffer.isView(part) ? part.byteLength : part.size + if (relativeStart && size <= relativeStart) { + // Skip the beginning and change the relative + // start & end position as we skip the unwanted parts + relativeStart -= size + relativeEnd -= size + } else { + let chunk + if (ArrayBuffer.isView(part)) { + chunk = part.subarray(relativeStart, Math.min(size, relativeEnd)) + added += chunk.byteLength + } else { + chunk = part.slice(relativeStart, Math.min(size, relativeEnd)) + added += chunk.size + } + relativeEnd -= size + blobParts.push(chunk) + relativeStart = 0 // All next sequential parts should start at 0 + } + } + + const blob = new Blob([], { type: String(type).toLowerCase() }) + blob.#size = span + blob.#parts = blobParts + + return blob + } + + get [Symbol.toStringTag] () { + return 'Blob' + } + + static [Symbol.hasInstance] (object) { + return ( + object && + typeof object === 'object' && + typeof object.constructor === 'function' && + ( + typeof object.stream === 'function' || + typeof object.arrayBuffer === 'function' + ) && + /^(Blob|File)$/.test(object[Symbol.toStringTag]) + ) + } +} + +Object.defineProperties(_Blob.prototype, { + size: { enumerable: true }, + type: { enumerable: true }, + slice: { enumerable: true } +}) + +/** @type {typeof globalThis.Blob} */ +export const Blob = _Blob +export default Blob diff --git a/node_modules/fetch-blob/package.json b/node_modules/fetch-blob/package.json new file mode 100644 index 0000000..9d07f39 --- /dev/null +++ b/node_modules/fetch-blob/package.json @@ -0,0 +1,56 @@ +{ + "name": "fetch-blob", + "version": "3.2.0", + "description": "Blob & File implementation in Node.js, originally from node-fetch.", + "main": "index.js", + "type": "module", + "files": [ + "from.js", + "file.js", + "file.d.ts", + "index.js", + "index.d.ts", + "from.d.ts", + "streams.cjs" + ], + "scripts": { + "test": "node --experimental-loader ./test/http-loader.js ./test/test-wpt-in-node.js", + "report": "c8 --reporter json --reporter text npm run test", + "coverage": "npm run report && codecov -f coverage/coverage-final.json", + "prepublishOnly": "tsc --declaration --emitDeclarationOnly --allowJs index.js from.js" + }, + "repository": "https://github.com/node-fetch/fetch-blob.git", + "keywords": [ + "blob", + "file", + "node-fetch" + ], + "engines": { + "node": "^12.20 || >= 14.13" + }, + "author": "Jimmy Wärting (https://jimmy.warting.se)", + "license": "MIT", + "bugs": { + "url": "https://github.com/node-fetch/fetch-blob/issues" + }, + "homepage": "https://github.com/node-fetch/fetch-blob#readme", + "devDependencies": { + "@types/node": "^17.0.9", + "c8": "^7.11.0", + "typescript": "^4.5.4" + }, + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/jimmywarting" + }, + { + "type": "paypal", + "url": "https://paypal.me/jimmywarting" + } + ], + "dependencies": { + "node-domexception": "^1.0.0", + "web-streams-polyfill": "^3.0.3" + } +} diff --git a/node_modules/fetch-blob/streams.cjs b/node_modules/fetch-blob/streams.cjs new file mode 100644 index 0000000..f760959 --- /dev/null +++ b/node_modules/fetch-blob/streams.cjs @@ -0,0 +1,51 @@ +/* c8 ignore start */ +// 64 KiB (same size chrome slice theirs blob into Uint8array's) +const POOL_SIZE = 65536 + +if (!globalThis.ReadableStream) { + // `node:stream/web` got introduced in v16.5.0 as experimental + // and it's preferred over the polyfilled version. So we also + // suppress the warning that gets emitted by NodeJS for using it. + try { + const process = require('node:process') + const { emitWarning } = process + try { + process.emitWarning = () => {} + Object.assign(globalThis, require('node:stream/web')) + process.emitWarning = emitWarning + } catch (error) { + process.emitWarning = emitWarning + throw error + } + } catch (error) { + // fallback to polyfill implementation + Object.assign(globalThis, require('web-streams-polyfill/dist/ponyfill.es2018.js')) + } +} + +try { + // Don't use node: prefix for this, require+node: is not supported until node v14.14 + // Only `import()` can use prefix in 12.20 and later + const { Blob } = require('buffer') + if (Blob && !Blob.prototype.stream) { + Blob.prototype.stream = function name (params) { + let position = 0 + const blob = this + + return new ReadableStream({ + type: 'bytes', + async pull (ctrl) { + const chunk = blob.slice(position, Math.min(blob.size, position + POOL_SIZE)) + const buffer = await chunk.arrayBuffer() + position += buffer.byteLength + ctrl.enqueue(new Uint8Array(buffer)) + + if (position === blob.size) { + ctrl.close() + } + } + }) + } + } +} catch (error) {} +/* c8 ignore end */ diff --git a/node_modules/follow-redirects/LICENSE b/node_modules/follow-redirects/LICENSE new file mode 100644 index 0000000..742cbad --- /dev/null +++ b/node_modules/follow-redirects/LICENSE @@ -0,0 +1,18 @@ +Copyright 2014–present Olivier Lalonde , James Talmage , Ruben Verborgh + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/follow-redirects/README.md b/node_modules/follow-redirects/README.md new file mode 100644 index 0000000..eb869a6 --- /dev/null +++ b/node_modules/follow-redirects/README.md @@ -0,0 +1,155 @@ +## Follow Redirects + +Drop-in replacement for Node's `http` and `https` modules that automatically follows redirects. + +[![npm version](https://img.shields.io/npm/v/follow-redirects.svg)](https://www.npmjs.com/package/follow-redirects) +[![Build Status](https://github.com/follow-redirects/follow-redirects/workflows/CI/badge.svg)](https://github.com/follow-redirects/follow-redirects/actions) +[![Coverage Status](https://coveralls.io/repos/follow-redirects/follow-redirects/badge.svg?branch=master)](https://coveralls.io/r/follow-redirects/follow-redirects?branch=master) +[![npm downloads](https://img.shields.io/npm/dm/follow-redirects.svg)](https://www.npmjs.com/package/follow-redirects) +[![Sponsor on GitHub](https://img.shields.io/static/v1?label=Sponsor&message=%F0%9F%92%96&logo=GitHub)](https://github.com/sponsors/RubenVerborgh) + +`follow-redirects` provides [request](https://nodejs.org/api/http.html#http_http_request_options_callback) and [get](https://nodejs.org/api/http.html#http_http_get_options_callback) + methods that behave identically to those found on the native [http](https://nodejs.org/api/http.html#http_http_request_options_callback) and [https](https://nodejs.org/api/https.html#https_https_request_options_callback) + modules, with the exception that they will seamlessly follow redirects. + +```javascript +const { http, https } = require('follow-redirects'); + +http.get('http://bit.ly/900913', response => { + response.on('data', chunk => { + console.log(chunk); + }); +}).on('error', err => { + console.error(err); +}); +``` + +You can inspect the final redirected URL through the `responseUrl` property on the `response`. +If no redirection happened, `responseUrl` is the original request URL. + +```javascript +const request = https.request({ + host: 'bitly.com', + path: '/UHfDGO', +}, response => { + console.log(response.responseUrl); + // 'http://duckduckgo.com/robots.txt' +}); +request.end(); +``` + +## Options +### Global options +Global options are set directly on the `follow-redirects` module: + +```javascript +const followRedirects = require('follow-redirects'); +followRedirects.maxRedirects = 10; +followRedirects.maxBodyLength = 20 * 1024 * 1024; // 20 MB +``` + +The following global options are supported: + +- `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. + +- `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. + +### Per-request options +Per-request options are set by passing an `options` object: + +```javascript +const url = require('url'); +const { http, https } = require('follow-redirects'); + +const options = url.parse('http://bit.ly/900913'); +options.maxRedirects = 10; +options.beforeRedirect = (options, response, request) => { + // Use this to adjust the request options upon redirecting, + // to inspect the latest response headers, + // or to cancel the request by throwing an error + + // response.headers = the redirect response headers + // response.statusCode = the redirect response code (eg. 301, 307, etc.) + + // request.url = the requested URL that resulted in a redirect + // request.headers = the headers in the request that resulted in a redirect + // request.method = the method of the request that resulted in a redirect + if (options.hostname === "example.com") { + options.auth = "user:password"; + } +}; +http.request(options); +``` + +In addition to the [standard HTTP](https://nodejs.org/api/http.html#http_http_request_options_callback) and [HTTPS options](https://nodejs.org/api/https.html#https_https_request_options_callback), +the following per-request options are supported: +- `followRedirects` (default: `true`) – whether redirects should be followed. + +- `maxRedirects` (default: `21`) – sets the maximum number of allowed redirects; if exceeded, an error will be emitted. + +- `maxBodyLength` (default: 10MB) – sets the maximum size of the request body; if exceeded, an error will be emitted. + +- `beforeRedirect` (default: `undefined`) – optionally change the request `options` on redirects, or abort the request by throwing an error. + +- `agents` (default: `undefined`) – sets the `agent` option per protocol, since HTTP and HTTPS use different agents. Example value: `{ http: new http.Agent(), https: new https.Agent() }` + +- `trackRedirects` (default: `false`) – whether to store the redirected response details into the `redirects` array on the response object. + + +### Advanced usage +By default, `follow-redirects` will use the Node.js default implementations +of [`http`](https://nodejs.org/api/http.html) +and [`https`](https://nodejs.org/api/https.html). +To enable features such as caching and/or intermediate request tracking, +you might instead want to wrap `follow-redirects` around custom protocol implementations: + +```javascript +const { http, https } = require('follow-redirects').wrap({ + http: require('your-custom-http'), + https: require('your-custom-https'), +}); +``` + +Such custom protocols only need an implementation of the `request` method. + +## Browser Usage + +Due to the way the browser works, +the `http` and `https` browser equivalents perform redirects by default. + +By requiring `follow-redirects` this way: +```javascript +const http = require('follow-redirects/http'); +const https = require('follow-redirects/https'); +``` +you can easily tell webpack and friends to replace +`follow-redirect` by the built-in versions: + +```json +{ + "follow-redirects/http" : "http", + "follow-redirects/https" : "https" +} +``` + +## Contributing + +Pull Requests are always welcome. Please [file an issue](https://github.com/follow-redirects/follow-redirects/issues) + detailing your proposal before you invest your valuable time. Additional features and bug fixes should be accompanied + by tests. You can run the test suite locally with a simple `npm test` command. + +## Debug Logging + +`follow-redirects` uses the excellent [debug](https://www.npmjs.com/package/debug) for logging. To turn on logging + set the environment variable `DEBUG=follow-redirects` for debug output from just this module. When running the test + suite it is sometimes advantageous to set `DEBUG=*` to see output from the express server as well. + +## Authors + +- [Ruben Verborgh](https://ruben.verborgh.org/) +- [Olivier Lalonde](mailto:olalonde@gmail.com) +- [James Talmage](mailto:james@talmage.io) + +## License + +[MIT License](https://github.com/follow-redirects/follow-redirects/blob/master/LICENSE) diff --git a/node_modules/follow-redirects/debug.js b/node_modules/follow-redirects/debug.js new file mode 100644 index 0000000..decb77d --- /dev/null +++ b/node_modules/follow-redirects/debug.js @@ -0,0 +1,15 @@ +var debug; + +module.exports = function () { + if (!debug) { + try { + /* eslint global-require: off */ + debug = require("debug")("follow-redirects"); + } + catch (error) { /* */ } + if (typeof debug !== "function") { + debug = function () { /* */ }; + } + } + debug.apply(null, arguments); +}; diff --git a/node_modules/follow-redirects/http.js b/node_modules/follow-redirects/http.js new file mode 100644 index 0000000..695e356 --- /dev/null +++ b/node_modules/follow-redirects/http.js @@ -0,0 +1 @@ +module.exports = require("./").http; diff --git a/node_modules/follow-redirects/https.js b/node_modules/follow-redirects/https.js new file mode 100644 index 0000000..d21c921 --- /dev/null +++ b/node_modules/follow-redirects/https.js @@ -0,0 +1 @@ +module.exports = require("./").https; diff --git a/node_modules/follow-redirects/index.js b/node_modules/follow-redirects/index.js new file mode 100644 index 0000000..a30b32c --- /dev/null +++ b/node_modules/follow-redirects/index.js @@ -0,0 +1,686 @@ +var url = require("url"); +var URL = url.URL; +var http = require("http"); +var https = require("https"); +var Writable = require("stream").Writable; +var assert = require("assert"); +var debug = require("./debug"); + +// Preventive platform detection +// istanbul ignore next +(function detectUnsupportedEnvironment() { + var looksLikeNode = typeof process !== "undefined"; + var looksLikeBrowser = typeof window !== "undefined" && typeof document !== "undefined"; + var looksLikeV8 = isFunction(Error.captureStackTrace); + if (!looksLikeNode && (looksLikeBrowser || !looksLikeV8)) { + console.warn("The follow-redirects package should be excluded from browser builds."); + } +}()); + +// Whether to use the native URL object or the legacy url module +var useNativeURL = false; +try { + assert(new URL("")); +} +catch (error) { + useNativeURL = error.code === "ERR_INVALID_URL"; +} + +// URL fields to preserve in copy operations +var preservedUrlFields = [ + "auth", + "host", + "hostname", + "href", + "path", + "pathname", + "port", + "protocol", + "query", + "search", + "hash", +]; + +// Create handlers that pass events from native requests +var events = ["abort", "aborted", "connect", "error", "socket", "timeout"]; +var eventHandlers = Object.create(null); +events.forEach(function (event) { + eventHandlers[event] = function (arg1, arg2, arg3) { + this._redirectable.emit(event, arg1, arg2, arg3); + }; +}); + +// Error types with codes +var InvalidUrlError = createErrorType( + "ERR_INVALID_URL", + "Invalid URL", + TypeError +); +var RedirectionError = createErrorType( + "ERR_FR_REDIRECTION_FAILURE", + "Redirected request failed" +); +var TooManyRedirectsError = createErrorType( + "ERR_FR_TOO_MANY_REDIRECTS", + "Maximum number of redirects exceeded", + RedirectionError +); +var MaxBodyLengthExceededError = createErrorType( + "ERR_FR_MAX_BODY_LENGTH_EXCEEDED", + "Request body larger than maxBodyLength limit" +); +var WriteAfterEndError = createErrorType( + "ERR_STREAM_WRITE_AFTER_END", + "write after end" +); + +// istanbul ignore next +var destroy = Writable.prototype.destroy || noop; + +// An HTTP(S) request that can be redirected +function RedirectableRequest(options, responseCallback) { + // Initialize the request + Writable.call(this); + this._sanitizeOptions(options); + this._options = options; + this._ended = false; + this._ending = false; + this._redirectCount = 0; + this._redirects = []; + this._requestBodyLength = 0; + this._requestBodyBuffers = []; + + // Attach a callback if passed + if (responseCallback) { + this.on("response", responseCallback); + } + + // React to responses of native requests + var self = this; + this._onNativeResponse = function (response) { + try { + self._processResponse(response); + } + catch (cause) { + self.emit("error", cause instanceof RedirectionError ? + cause : new RedirectionError({ cause: cause })); + } + }; + + // Perform the first request + this._performRequest(); +} +RedirectableRequest.prototype = Object.create(Writable.prototype); + +RedirectableRequest.prototype.abort = function () { + destroyRequest(this._currentRequest); + this._currentRequest.abort(); + this.emit("abort"); +}; + +RedirectableRequest.prototype.destroy = function (error) { + destroyRequest(this._currentRequest, error); + destroy.call(this, error); + return this; +}; + +// Writes buffered data to the current native request +RedirectableRequest.prototype.write = function (data, encoding, callback) { + // Writing is not allowed if end has been called + if (this._ending) { + throw new WriteAfterEndError(); + } + + // Validate input and shift parameters if necessary + if (!isString(data) && !isBuffer(data)) { + throw new TypeError("data should be a string, Buffer or Uint8Array"); + } + if (isFunction(encoding)) { + callback = encoding; + encoding = null; + } + + // Ignore empty buffers, since writing them doesn't invoke the callback + // https://github.com/nodejs/node/issues/22066 + if (data.length === 0) { + if (callback) { + callback(); + } + return; + } + // Only write when we don't exceed the maximum body length + if (this._requestBodyLength + data.length <= this._options.maxBodyLength) { + this._requestBodyLength += data.length; + this._requestBodyBuffers.push({ data: data, encoding: encoding }); + this._currentRequest.write(data, encoding, callback); + } + // Error when we exceed the maximum body length + else { + this.emit("error", new MaxBodyLengthExceededError()); + this.abort(); + } +}; + +// Ends the current native request +RedirectableRequest.prototype.end = function (data, encoding, callback) { + // Shift parameters if necessary + if (isFunction(data)) { + callback = data; + data = encoding = null; + } + else if (isFunction(encoding)) { + callback = encoding; + encoding = null; + } + + // Write data if needed and end + if (!data) { + this._ended = this._ending = true; + this._currentRequest.end(null, null, callback); + } + else { + var self = this; + var currentRequest = this._currentRequest; + this.write(data, encoding, function () { + self._ended = true; + currentRequest.end(null, null, callback); + }); + this._ending = true; + } +}; + +// Sets a header value on the current native request +RedirectableRequest.prototype.setHeader = function (name, value) { + this._options.headers[name] = value; + this._currentRequest.setHeader(name, value); +}; + +// Clears a header value on the current native request +RedirectableRequest.prototype.removeHeader = function (name) { + delete this._options.headers[name]; + this._currentRequest.removeHeader(name); +}; + +// Global timeout for all underlying requests +RedirectableRequest.prototype.setTimeout = function (msecs, callback) { + var self = this; + + // Destroys the socket on timeout + function destroyOnTimeout(socket) { + socket.setTimeout(msecs); + socket.removeListener("timeout", socket.destroy); + socket.addListener("timeout", socket.destroy); + } + + // Sets up a timer to trigger a timeout event + function startTimer(socket) { + if (self._timeout) { + clearTimeout(self._timeout); + } + self._timeout = setTimeout(function () { + self.emit("timeout"); + clearTimer(); + }, msecs); + destroyOnTimeout(socket); + } + + // Stops a timeout from triggering + function clearTimer() { + // Clear the timeout + if (self._timeout) { + clearTimeout(self._timeout); + self._timeout = null; + } + + // Clean up all attached listeners + self.removeListener("abort", clearTimer); + self.removeListener("error", clearTimer); + self.removeListener("response", clearTimer); + self.removeListener("close", clearTimer); + if (callback) { + self.removeListener("timeout", callback); + } + if (!self.socket) { + self._currentRequest.removeListener("socket", startTimer); + } + } + + // Attach callback if passed + if (callback) { + this.on("timeout", callback); + } + + // Start the timer if or when the socket is opened + if (this.socket) { + startTimer(this.socket); + } + else { + this._currentRequest.once("socket", startTimer); + } + + // Clean up on events + this.on("socket", destroyOnTimeout); + this.on("abort", clearTimer); + this.on("error", clearTimer); + this.on("response", clearTimer); + this.on("close", clearTimer); + + return this; +}; + +// Proxy all other public ClientRequest methods +[ + "flushHeaders", "getHeader", + "setNoDelay", "setSocketKeepAlive", +].forEach(function (method) { + RedirectableRequest.prototype[method] = function (a, b) { + return this._currentRequest[method](a, b); + }; +}); + +// Proxy all public ClientRequest properties +["aborted", "connection", "socket"].forEach(function (property) { + Object.defineProperty(RedirectableRequest.prototype, property, { + get: function () { return this._currentRequest[property]; }, + }); +}); + +RedirectableRequest.prototype._sanitizeOptions = function (options) { + // Ensure headers are always present + if (!options.headers) { + options.headers = {}; + } + + // Since http.request treats host as an alias of hostname, + // but the url module interprets host as hostname plus port, + // eliminate the host property to avoid confusion. + if (options.host) { + // Use hostname if set, because it has precedence + if (!options.hostname) { + options.hostname = options.host; + } + delete options.host; + } + + // Complete the URL object when necessary + if (!options.pathname && options.path) { + var searchPos = options.path.indexOf("?"); + if (searchPos < 0) { + options.pathname = options.path; + } + else { + options.pathname = options.path.substring(0, searchPos); + options.search = options.path.substring(searchPos); + } + } +}; + + +// Executes the next native request (initial or redirect) +RedirectableRequest.prototype._performRequest = function () { + // Load the native protocol + var protocol = this._options.protocol; + var nativeProtocol = this._options.nativeProtocols[protocol]; + if (!nativeProtocol) { + throw new TypeError("Unsupported protocol " + protocol); + } + + // If specified, use the agent corresponding to the protocol + // (HTTP and HTTPS use different types of agents) + if (this._options.agents) { + var scheme = protocol.slice(0, -1); + this._options.agent = this._options.agents[scheme]; + } + + // Create the native request and set up its event handlers + var request = this._currentRequest = + nativeProtocol.request(this._options, this._onNativeResponse); + request._redirectable = this; + for (var event of events) { + request.on(event, eventHandlers[event]); + } + + // RFC7230§5.3.1: When making a request directly to an origin server, […] + // a client MUST send only the absolute path […] as the request-target. + this._currentUrl = /^\//.test(this._options.path) ? + url.format(this._options) : + // When making a request to a proxy, […] + // a client MUST send the target URI in absolute-form […]. + this._options.path; + + // End a redirected request + // (The first request must be ended explicitly with RedirectableRequest#end) + if (this._isRedirect) { + // Write the request entity and end + var i = 0; + var self = this; + var buffers = this._requestBodyBuffers; + (function writeNext(error) { + // Only write if this request has not been redirected yet + // istanbul ignore else + if (request === self._currentRequest) { + // Report any write errors + // istanbul ignore if + if (error) { + self.emit("error", error); + } + // Write the next buffer if there are still left + else if (i < buffers.length) { + var buffer = buffers[i++]; + // istanbul ignore else + if (!request.finished) { + request.write(buffer.data, buffer.encoding, writeNext); + } + } + // End the request if `end` has been called on us + else if (self._ended) { + request.end(); + } + } + }()); + } +}; + +// Processes a response from the current native request +RedirectableRequest.prototype._processResponse = function (response) { + // Store the redirected response + var statusCode = response.statusCode; + if (this._options.trackRedirects) { + this._redirects.push({ + url: this._currentUrl, + headers: response.headers, + statusCode: statusCode, + }); + } + + // RFC7231§6.4: The 3xx (Redirection) class of status code indicates + // that further action needs to be taken by the user agent in order to + // fulfill the request. If a Location header field is provided, + // the user agent MAY automatically redirect its request to the URI + // referenced by the Location field value, + // even if the specific status code is not understood. + + // If the response is not a redirect; return it as-is + var location = response.headers.location; + if (!location || this._options.followRedirects === false || + statusCode < 300 || statusCode >= 400) { + response.responseUrl = this._currentUrl; + response.redirects = this._redirects; + this.emit("response", response); + + // Clean up + this._requestBodyBuffers = []; + return; + } + + // The response is a redirect, so abort the current request + destroyRequest(this._currentRequest); + // Discard the remainder of the response to avoid waiting for data + response.destroy(); + + // RFC7231§6.4: A client SHOULD detect and intervene + // in cyclical redirections (i.e., "infinite" redirection loops). + if (++this._redirectCount > this._options.maxRedirects) { + throw new TooManyRedirectsError(); + } + + // Store the request headers if applicable + var requestHeaders; + var beforeRedirect = this._options.beforeRedirect; + if (beforeRedirect) { + requestHeaders = Object.assign({ + // The Host header was set by nativeProtocol.request + Host: response.req.getHeader("host"), + }, this._options.headers); + } + + // RFC7231§6.4: Automatic redirection needs to done with + // care for methods not known to be safe, […] + // RFC7231§6.4.2–3: For historical reasons, a user agent MAY change + // the request method from POST to GET for the subsequent request. + var method = this._options.method; + if ((statusCode === 301 || statusCode === 302) && this._options.method === "POST" || + // RFC7231§6.4.4: The 303 (See Other) status code indicates that + // the server is redirecting the user agent to a different resource […] + // A user agent can perform a retrieval request targeting that URI + // (a GET or HEAD request if using HTTP) […] + (statusCode === 303) && !/^(?:GET|HEAD)$/.test(this._options.method)) { + this._options.method = "GET"; + // Drop a possible entity and headers related to it + this._requestBodyBuffers = []; + removeMatchingHeaders(/^content-/i, this._options.headers); + } + + // Drop the Host header, as the redirect might lead to a different host + var currentHostHeader = removeMatchingHeaders(/^host$/i, this._options.headers); + + // If the redirect is relative, carry over the host of the last request + var currentUrlParts = parseUrl(this._currentUrl); + var currentHost = currentHostHeader || currentUrlParts.host; + var currentUrl = /^\w+:/.test(location) ? this._currentUrl : + url.format(Object.assign(currentUrlParts, { host: currentHost })); + + // Create the redirected request + var redirectUrl = resolveUrl(location, currentUrl); + debug("redirecting to", redirectUrl.href); + this._isRedirect = true; + spreadUrlObject(redirectUrl, this._options); + + // Drop confidential headers when redirecting to a less secure protocol + // or to a different domain that is not a superdomain + if (redirectUrl.protocol !== currentUrlParts.protocol && + redirectUrl.protocol !== "https:" || + redirectUrl.host !== currentHost && + !isSubdomain(redirectUrl.host, currentHost)) { + removeMatchingHeaders(/^(?:(?:proxy-)?authorization|cookie)$/i, this._options.headers); + } + + // Evaluate the beforeRedirect callback + if (isFunction(beforeRedirect)) { + var responseDetails = { + headers: response.headers, + statusCode: statusCode, + }; + var requestDetails = { + url: currentUrl, + method: method, + headers: requestHeaders, + }; + beforeRedirect(this._options, responseDetails, requestDetails); + this._sanitizeOptions(this._options); + } + + // Perform the redirected request + this._performRequest(); +}; + +// Wraps the key/value object of protocols with redirect functionality +function wrap(protocols) { + // Default settings + var exports = { + maxRedirects: 21, + maxBodyLength: 10 * 1024 * 1024, + }; + + // Wrap each protocol + var nativeProtocols = {}; + Object.keys(protocols).forEach(function (scheme) { + var protocol = scheme + ":"; + var nativeProtocol = nativeProtocols[protocol] = protocols[scheme]; + var wrappedProtocol = exports[scheme] = Object.create(nativeProtocol); + + // Executes a request, following redirects + function request(input, options, callback) { + // Parse parameters, ensuring that input is an object + if (isURL(input)) { + input = spreadUrlObject(input); + } + else if (isString(input)) { + input = spreadUrlObject(parseUrl(input)); + } + else { + callback = options; + options = validateUrl(input); + input = { protocol: protocol }; + } + if (isFunction(options)) { + callback = options; + options = null; + } + + // Set defaults + options = Object.assign({ + maxRedirects: exports.maxRedirects, + maxBodyLength: exports.maxBodyLength, + }, input, options); + options.nativeProtocols = nativeProtocols; + if (!isString(options.host) && !isString(options.hostname)) { + options.hostname = "::1"; + } + + assert.equal(options.protocol, protocol, "protocol mismatch"); + debug("options", options); + return new RedirectableRequest(options, callback); + } + + // Executes a GET request, following redirects + function get(input, options, callback) { + var wrappedRequest = wrappedProtocol.request(input, options, callback); + wrappedRequest.end(); + return wrappedRequest; + } + + // Expose the properties on the wrapped protocol + Object.defineProperties(wrappedProtocol, { + request: { value: request, configurable: true, enumerable: true, writable: true }, + get: { value: get, configurable: true, enumerable: true, writable: true }, + }); + }); + return exports; +} + +function noop() { /* empty */ } + +function parseUrl(input) { + var parsed; + // istanbul ignore else + if (useNativeURL) { + parsed = new URL(input); + } + else { + // Ensure the URL is valid and absolute + parsed = validateUrl(url.parse(input)); + if (!isString(parsed.protocol)) { + throw new InvalidUrlError({ input }); + } + } + return parsed; +} + +function resolveUrl(relative, base) { + // istanbul ignore next + return useNativeURL ? new URL(relative, base) : parseUrl(url.resolve(base, relative)); +} + +function validateUrl(input) { + if (/^\[/.test(input.hostname) && !/^\[[:0-9a-f]+\]$/i.test(input.hostname)) { + throw new InvalidUrlError({ input: input.href || input }); + } + if (/^\[/.test(input.host) && !/^\[[:0-9a-f]+\](:\d+)?$/i.test(input.host)) { + throw new InvalidUrlError({ input: input.href || input }); + } + return input; +} + +function spreadUrlObject(urlObject, target) { + var spread = target || {}; + for (var key of preservedUrlFields) { + spread[key] = urlObject[key]; + } + + // Fix IPv6 hostname + if (spread.hostname.startsWith("[")) { + spread.hostname = spread.hostname.slice(1, -1); + } + // Ensure port is a number + if (spread.port !== "") { + spread.port = Number(spread.port); + } + // Concatenate path + spread.path = spread.search ? spread.pathname + spread.search : spread.pathname; + + return spread; +} + +function removeMatchingHeaders(regex, headers) { + var lastValue; + for (var header in headers) { + if (regex.test(header)) { + lastValue = headers[header]; + delete headers[header]; + } + } + return (lastValue === null || typeof lastValue === "undefined") ? + undefined : String(lastValue).trim(); +} + +function createErrorType(code, message, baseClass) { + // Create constructor + function CustomError(properties) { + // istanbul ignore else + if (isFunction(Error.captureStackTrace)) { + Error.captureStackTrace(this, this.constructor); + } + Object.assign(this, properties || {}); + this.code = code; + this.message = this.cause ? message + ": " + this.cause.message : message; + } + + // Attach constructor and set default properties + CustomError.prototype = new (baseClass || Error)(); + Object.defineProperties(CustomError.prototype, { + constructor: { + value: CustomError, + enumerable: false, + }, + name: { + value: "Error [" + code + "]", + enumerable: false, + }, + }); + return CustomError; +} + +function destroyRequest(request, error) { + for (var event of events) { + request.removeListener(event, eventHandlers[event]); + } + request.on("error", noop); + request.destroy(error); +} + +function isSubdomain(subdomain, domain) { + assert(isString(subdomain) && isString(domain)); + var dot = subdomain.length - domain.length - 1; + return dot > 0 && subdomain[dot] === "." && subdomain.endsWith(domain); +} + +function isString(value) { + return typeof value === "string" || value instanceof String; +} + +function isFunction(value) { + return typeof value === "function"; +} + +function isBuffer(value) { + return typeof value === "object" && ("length" in value); +} + +function isURL(value) { + return URL && value instanceof URL; +} + +// Exports +module.exports = wrap({ http: http, https: https }); +module.exports.wrap = wrap; diff --git a/node_modules/follow-redirects/package.json b/node_modules/follow-redirects/package.json new file mode 100644 index 0000000..6f491e1 --- /dev/null +++ b/node_modules/follow-redirects/package.json @@ -0,0 +1,58 @@ +{ + "name": "follow-redirects", + "version": "1.15.9", + "description": "HTTP and HTTPS modules that follow redirects.", + "license": "MIT", + "main": "index.js", + "files": [ + "*.js" + ], + "engines": { + "node": ">=4.0" + }, + "scripts": { + "lint": "eslint *.js test", + "test": "nyc mocha" + }, + "repository": { + "type": "git", + "url": "git+ssh://git@github.com/follow-redirects/follow-redirects.git" + }, + "homepage": "https://github.com/follow-redirects/follow-redirects", + "bugs": { + "url": "https://github.com/follow-redirects/follow-redirects/issues" + }, + "keywords": [ + "http", + "https", + "url", + "redirect", + "client", + "location", + "utility" + ], + "author": "Ruben Verborgh (https://ruben.verborgh.org/)", + "contributors": [ + "Olivier Lalonde (http://www.syskall.com)", + "James Talmage " + ], + "funding": [ + { + "type": "individual", + "url": "https://github.com/sponsors/RubenVerborgh" + } + ], + "peerDependenciesMeta": { + "debug": { + "optional": true + } + }, + "devDependencies": { + "concat-stream": "^2.0.0", + "eslint": "^5.16.0", + "express": "^4.16.4", + "lolex": "^3.1.0", + "mocha": "^6.0.2", + "nyc": "^14.1.1" + } +} diff --git a/node_modules/form-data/License b/node_modules/form-data/License new file mode 100644 index 0000000..c7ff12a --- /dev/null +++ b/node_modules/form-data/License @@ -0,0 +1,19 @@ +Copyright (c) 2012 Felix Geisendörfer (felix@debuggable.com) and contributors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. diff --git a/node_modules/form-data/README.md.bak b/node_modules/form-data/README.md.bak new file mode 100644 index 0000000..262ccf5 --- /dev/null +++ b/node_modules/form-data/README.md.bak @@ -0,0 +1,355 @@ +# Form-Data [![NPM Module](https://img.shields.io/npm/v/form-data.svg)](https://www.npmjs.com/package/form-data) [![Join the chat at https://gitter.im/form-data/form-data](http://form-data.github.io/images/gitterbadge.svg)](https://gitter.im/form-data/form-data) + +A library to create readable ```"multipart/form-data"``` streams. Can be used to submit forms and file uploads to other web applications. + +The API of this library is inspired by the [XMLHttpRequest-2 FormData Interface][xhr2-fd]. + +[xhr2-fd]: http://dev.w3.org/2006/webapi/XMLHttpRequest-2/Overview.html#the-formdata-interface + +[![Linux Build](https://img.shields.io/travis/form-data/form-data/master.svg?label=linux:6.x-12.x)](https://travis-ci.org/form-data/form-data) +[![MacOS Build](https://img.shields.io/travis/form-data/form-data/master.svg?label=macos:6.x-12.x)](https://travis-ci.org/form-data/form-data) +[![Windows Build](https://img.shields.io/travis/form-data/form-data/master.svg?label=windows:6.x-12.x)](https://travis-ci.org/form-data/form-data) + +[![Coverage Status](https://img.shields.io/coveralls/form-data/form-data/master.svg?label=code+coverage)](https://coveralls.io/github/form-data/form-data?branch=master) +[![Dependency Status](https://img.shields.io/david/form-data/form-data.svg)](https://david-dm.org/form-data/form-data) + +## Install + +``` +npm install --save form-data +``` + +## Usage + +In this example we are constructing a form with 3 fields that contain a string, +a buffer and a file stream. + +``` javascript +var FormData = require('form-data'); +var fs = require('fs'); + +var form = new FormData(); +form.append('my_field', 'my value'); +form.append('my_buffer', new Buffer(10)); +form.append('my_file', fs.createReadStream('/foo/bar.jpg')); +``` + +Also you can use http-response stream: + +``` javascript +var FormData = require('form-data'); +var http = require('http'); + +var form = new FormData(); + +http.request('http://nodejs.org/images/logo.png', function (response) { + form.append('my_field', 'my value'); + form.append('my_buffer', new Buffer(10)); + form.append('my_logo', response); +}); +``` + +Or @mikeal's [request](https://github.com/request/request) stream: + +``` javascript +var FormData = require('form-data'); +var request = require('request'); + +var form = new FormData(); + +form.append('my_field', 'my value'); +form.append('my_buffer', new Buffer(10)); +form.append('my_logo', request('http://nodejs.org/images/logo.png')); +``` + +In order to submit this form to a web application, call ```submit(url, [callback])``` method: + +``` javascript +form.submit('http://example.org/', function (err, res) { + // res – response object (http.IncomingMessage) // + res.resume(); +}); + +``` + +For more advanced request manipulations ```submit()``` method returns ```http.ClientRequest``` object, or you can choose from one of the alternative submission methods. + +### Custom options + +You can provide custom options, such as `maxDataSize`: + +``` javascript +var FormData = require('form-data'); + +var form = new FormData({ maxDataSize: 20971520 }); +form.append('my_field', 'my value'); +form.append('my_buffer', /* something big */); +``` + +List of available options could be found in [combined-stream](https://github.com/felixge/node-combined-stream/blob/master/lib/combined_stream.js#L7-L15) + +### Alternative submission methods + +You can use node's http client interface: + +``` javascript +var http = require('http'); + +var request = http.request({ + method: 'post', + host: 'example.org', + path: '/upload', + headers: form.getHeaders() +}); + +form.pipe(request); + +request.on('response', function (res) { + console.log(res.statusCode); +}); +``` + +Or if you would prefer the `'Content-Length'` header to be set for you: + +``` javascript +form.submit('example.org/upload', function (err, res) { + console.log(res.statusCode); +}); +``` + +To use custom headers and pre-known length in parts: + +``` javascript +var CRLF = '\r\n'; +var form = new FormData(); + +var options = { + header: CRLF + '--' + form.getBoundary() + CRLF + 'X-Custom-Header: 123' + CRLF + CRLF, + knownLength: 1 +}; + +form.append('my_buffer', buffer, options); + +form.submit('http://example.com/', function (err, res) { + if (err) throw err; + console.log('Done'); +}); +``` + +Form-Data can recognize and fetch all the required information from common types of streams (```fs.readStream```, ```http.response``` and ```mikeal's request```), for some other types of streams you'd need to provide "file"-related information manually: + +``` javascript +someModule.stream(function (err, stdout, stderr) { + if (err) throw err; + + var form = new FormData(); + + form.append('file', stdout, { + filename: 'unicycle.jpg', // ... or: + filepath: 'photos/toys/unicycle.jpg', + contentType: 'image/jpeg', + knownLength: 19806 + }); + + form.submit('http://example.com/', function (err, res) { + if (err) throw err; + console.log('Done'); + }); +}); +``` + +The `filepath` property overrides `filename` and may contain a relative path. This is typically used when uploading [multiple files from a directory](https://wicg.github.io/entries-api/#dom-htmlinputelement-webkitdirectory). + +For edge cases, like POST request to URL with query string or to pass HTTP auth credentials, object can be passed to `form.submit()` as first parameter: + +``` javascript +form.submit({ + host: 'example.com', + path: '/probably.php?extra=params', + auth: 'username:password' +}, function (err, res) { + console.log(res.statusCode); +}); +``` + +In case you need to also send custom HTTP headers with the POST request, you can use the `headers` key in first parameter of `form.submit()`: + +``` javascript +form.submit({ + host: 'example.com', + path: '/surelynot.php', + headers: { 'x-test-header': 'test-header-value' } +}, function (err, res) { + console.log(res.statusCode); +}); +``` + +### Methods + +- [_Void_ append( **String** _field_, **Mixed** _value_ [, **Mixed** _options_] )](https://github.com/form-data/form-data#void-append-string-field-mixed-value--mixed-options-). +- [_Headers_ getHeaders( [**Headers** _userHeaders_] )](https://github.com/form-data/form-data#array-getheaders-array-userheaders-) +- [_String_ getBoundary()](https://github.com/form-data/form-data#string-getboundary) +- [_Void_ setBoundary()](https://github.com/form-data/form-data#void-setboundary) +- [_Buffer_ getBuffer()](https://github.com/form-data/form-data#buffer-getbuffer) +- [_Integer_ getLengthSync()](https://github.com/form-data/form-data#integer-getlengthsync) +- [_Integer_ getLength( **function** _callback_ )](https://github.com/form-data/form-data#integer-getlength-function-callback-) +- [_Boolean_ hasKnownLength()](https://github.com/form-data/form-data#boolean-hasknownlength) +- [_Request_ submit( _params_, **function** _callback_ )](https://github.com/form-data/form-data#request-submit-params-function-callback-) +- [_String_ toString()](https://github.com/form-data/form-data#string-tostring) + +#### _Void_ append( **String** _field_, **Mixed** _value_ [, **Mixed** _options_] ) +Append data to the form. You can submit about any format (string, integer, boolean, buffer, etc.). However, Arrays are not supported and need to be turned into strings by the user. +```javascript +var form = new FormData(); +form.append('my_string', 'my value'); +form.append('my_integer', 1); +form.append('my_boolean', true); +form.append('my_buffer', new Buffer(10)); +form.append('my_array_as_json', JSON.stringify(['bird', 'cute'])); +``` + +You may provide a string for options, or an object. +```javascript +// Set filename by providing a string for options +form.append('my_file', fs.createReadStream('/foo/bar.jpg'), 'bar.jpg'); + +// provide an object. +form.append('my_file', fs.createReadStream('/foo/bar.jpg'), { filename: 'bar.jpg', contentType: 'image/jpeg', knownLength: 19806 }); +``` + +#### _Headers_ getHeaders( [**Headers** _userHeaders_] ) +This method adds the correct `content-type` header to the provided array of `userHeaders`. + +#### _String_ getBoundary() +Return the boundary of the formData. By default, the boundary consists of 26 `-` followed by 24 numbers +for example: +```javascript +--------------------------515890814546601021194782 +``` + +#### _Void_ setBoundary(String _boundary_) +Set the boundary string, overriding the default behavior described above. + +_Note: The boundary must be unique and may not appear in the data._ + +#### _Buffer_ getBuffer() +Return the full formdata request package, as a Buffer. You can insert this Buffer in e.g. Axios to send multipart data. +```javascript +var form = new FormData(); +form.append('my_buffer', Buffer.from([0x4a,0x42,0x20,0x52,0x6f,0x63,0x6b,0x73])); +form.append('my_file', fs.readFileSync('/foo/bar.jpg')); + +axios.post('https://example.com/path/to/api', form.getBuffer(), form.getHeaders()); +``` +**Note:** Because the output is of type Buffer, you can only append types that are accepted by Buffer: *string, Buffer, ArrayBuffer, Array, or Array-like Object*. A ReadStream for example will result in an error. + +#### _Integer_ getLengthSync() +Same as `getLength` but synchronous. + +_Note: getLengthSync __doesn't__ calculate streams length._ + +#### _Integer_ getLength(**function** _callback_ ) +Returns the `Content-Length` async. The callback is used to handle errors and continue once the length has been calculated +```javascript +this.getLength(function (err, length) { + if (err) { + this._error(err); + return; + } + + // add content length + request.setHeader('Content-Length', length); + + ... +}.bind(this)); +``` + +#### _Boolean_ hasKnownLength() +Checks if the length of added values is known. + +#### _Request_ submit(_params_, **function** _callback_ ) +Submit the form to a web application. +```javascript +var form = new FormData(); +form.append('my_string', 'Hello World'); + +form.submit('http://example.com/', function (err, res) { + // res – response object (http.IncomingMessage) // + res.resume(); +} ); +``` + +#### _String_ toString() +Returns the form data as a string. Don't use this if you are sending files or buffers, use `getBuffer()` instead. + +### Integration with other libraries + +#### Request + +Form submission using [request](https://github.com/request/request): + +```javascript +var formData = { + my_field: 'my_value', + my_file: fs.createReadStream(__dirname + '/unicycle.jpg'), +}; + +request.post({url:'http://service.com/upload', formData: formData}, function (err, httpResponse, body) { + if (err) { + return console.error('upload failed:', err); + } + console.log('Upload successful! Server responded with:', body); +}); +``` + +For more details see [request readme](https://github.com/request/request#multipartform-data-multipart-form-uploads). + +#### node-fetch + +You can also submit a form using [node-fetch](https://github.com/bitinn/node-fetch): + +```javascript +var form = new FormData(); + +form.append('a', 1); + +fetch('http://example.com', { method: 'POST', body: form }) + .then(function (res) { + return res.json(); + }).then(function (json) { + console.log(json); + }); +``` + +#### axios + +In Node.js you can post a file using [axios](https://github.com/axios/axios): +```javascript +const form = new FormData(); +const stream = fs.createReadStream(PATH_TO_FILE); + +form.append('image', stream); + +// In Node.js environment you need to set boundary in the header field 'Content-Type' by calling method `getHeaders` +const formHeaders = form.getHeaders(); + +axios.post('http://example.com', form, { + headers: { + ...formHeaders, + }, +}) + .then(response => response) + .catch(error => error) +``` + +## Notes + +- ```getLengthSync()``` method DOESN'T calculate length for streams, use ```knownLength``` options as workaround. +- ```getLength(cb)``` will send an error as first parameter of callback if stream length cannot be calculated (e.g. send in custom streams w/o using ```knownLength```). +- ```submit``` will not add `content-length` if form length is unknown or not calculable. +- Starting version `2.x` FormData has dropped support for `node@0.10.x`. +- Starting version `3.x` FormData has dropped support for `node@4.x`. + +## License + +Form-Data is released under the [MIT](License) license. diff --git a/node_modules/form-data/Readme.md b/node_modules/form-data/Readme.md new file mode 100644 index 0000000..6377d3c --- /dev/null +++ b/node_modules/form-data/Readme.md @@ -0,0 +1,355 @@ +# Form-Data [![NPM Module](https://img.shields.io/npm/v/form-data.svg)](https://www.npmjs.com/package/form-data) [![Join the chat at https://gitter.im/form-data/form-data](http://form-data.github.io/images/gitterbadge.svg)](https://gitter.im/form-data/form-data) + +A library to create readable ```"multipart/form-data"``` streams. Can be used to submit forms and file uploads to other web applications. + +The API of this library is inspired by the [XMLHttpRequest-2 FormData Interface][xhr2-fd]. + +[xhr2-fd]: http://dev.w3.org/2006/webapi/XMLHttpRequest-2/Overview.html#the-formdata-interface + +[![Linux Build](https://img.shields.io/travis/form-data/form-data/v4.0.3.svg?label=linux:6.x-12.x)](https://travis-ci.org/form-data/form-data) +[![MacOS Build](https://img.shields.io/travis/form-data/form-data/v4.0.3.svg?label=macos:6.x-12.x)](https://travis-ci.org/form-data/form-data) +[![Windows Build](https://img.shields.io/travis/form-data/form-data/v4.0.3.svg?label=windows:6.x-12.x)](https://travis-ci.org/form-data/form-data) + +[![Coverage Status](https://img.shields.io/coveralls/form-data/form-data/v4.0.3.svg?label=code+coverage)](https://coveralls.io/github/form-data/form-data?branch=master) +[![Dependency Status](https://img.shields.io/david/form-data/form-data.svg)](https://david-dm.org/form-data/form-data) + +## Install + +``` +npm install --save form-data +``` + +## Usage + +In this example we are constructing a form with 3 fields that contain a string, +a buffer and a file stream. + +``` javascript +var FormData = require('form-data'); +var fs = require('fs'); + +var form = new FormData(); +form.append('my_field', 'my value'); +form.append('my_buffer', new Buffer(10)); +form.append('my_file', fs.createReadStream('/foo/bar.jpg')); +``` + +Also you can use http-response stream: + +``` javascript +var FormData = require('form-data'); +var http = require('http'); + +var form = new FormData(); + +http.request('http://nodejs.org/images/logo.png', function (response) { + form.append('my_field', 'my value'); + form.append('my_buffer', new Buffer(10)); + form.append('my_logo', response); +}); +``` + +Or @mikeal's [request](https://github.com/request/request) stream: + +``` javascript +var FormData = require('form-data'); +var request = require('request'); + +var form = new FormData(); + +form.append('my_field', 'my value'); +form.append('my_buffer', new Buffer(10)); +form.append('my_logo', request('http://nodejs.org/images/logo.png')); +``` + +In order to submit this form to a web application, call ```submit(url, [callback])``` method: + +``` javascript +form.submit('http://example.org/', function (err, res) { + // res – response object (http.IncomingMessage) // + res.resume(); +}); + +``` + +For more advanced request manipulations ```submit()``` method returns ```http.ClientRequest``` object, or you can choose from one of the alternative submission methods. + +### Custom options + +You can provide custom options, such as `maxDataSize`: + +``` javascript +var FormData = require('form-data'); + +var form = new FormData({ maxDataSize: 20971520 }); +form.append('my_field', 'my value'); +form.append('my_buffer', /* something big */); +``` + +List of available options could be found in [combined-stream](https://github.com/felixge/node-combined-stream/blob/master/lib/combined_stream.js#L7-L15) + +### Alternative submission methods + +You can use node's http client interface: + +``` javascript +var http = require('http'); + +var request = http.request({ + method: 'post', + host: 'example.org', + path: '/upload', + headers: form.getHeaders() +}); + +form.pipe(request); + +request.on('response', function (res) { + console.log(res.statusCode); +}); +``` + +Or if you would prefer the `'Content-Length'` header to be set for you: + +``` javascript +form.submit('example.org/upload', function (err, res) { + console.log(res.statusCode); +}); +``` + +To use custom headers and pre-known length in parts: + +``` javascript +var CRLF = '\r\n'; +var form = new FormData(); + +var options = { + header: CRLF + '--' + form.getBoundary() + CRLF + 'X-Custom-Header: 123' + CRLF + CRLF, + knownLength: 1 +}; + +form.append('my_buffer', buffer, options); + +form.submit('http://example.com/', function (err, res) { + if (err) throw err; + console.log('Done'); +}); +``` + +Form-Data can recognize and fetch all the required information from common types of streams (```fs.readStream```, ```http.response``` and ```mikeal's request```), for some other types of streams you'd need to provide "file"-related information manually: + +``` javascript +someModule.stream(function (err, stdout, stderr) { + if (err) throw err; + + var form = new FormData(); + + form.append('file', stdout, { + filename: 'unicycle.jpg', // ... or: + filepath: 'photos/toys/unicycle.jpg', + contentType: 'image/jpeg', + knownLength: 19806 + }); + + form.submit('http://example.com/', function (err, res) { + if (err) throw err; + console.log('Done'); + }); +}); +``` + +The `filepath` property overrides `filename` and may contain a relative path. This is typically used when uploading [multiple files from a directory](https://wicg.github.io/entries-api/#dom-htmlinputelement-webkitdirectory). + +For edge cases, like POST request to URL with query string or to pass HTTP auth credentials, object can be passed to `form.submit()` as first parameter: + +``` javascript +form.submit({ + host: 'example.com', + path: '/probably.php?extra=params', + auth: 'username:password' +}, function (err, res) { + console.log(res.statusCode); +}); +``` + +In case you need to also send custom HTTP headers with the POST request, you can use the `headers` key in first parameter of `form.submit()`: + +``` javascript +form.submit({ + host: 'example.com', + path: '/surelynot.php', + headers: { 'x-test-header': 'test-header-value' } +}, function (err, res) { + console.log(res.statusCode); +}); +``` + +### Methods + +- [_Void_ append( **String** _field_, **Mixed** _value_ [, **Mixed** _options_] )](https://github.com/form-data/form-data#void-append-string-field-mixed-value--mixed-options-). +- [_Headers_ getHeaders( [**Headers** _userHeaders_] )](https://github.com/form-data/form-data#array-getheaders-array-userheaders-) +- [_String_ getBoundary()](https://github.com/form-data/form-data#string-getboundary) +- [_Void_ setBoundary()](https://github.com/form-data/form-data#void-setboundary) +- [_Buffer_ getBuffer()](https://github.com/form-data/form-data#buffer-getbuffer) +- [_Integer_ getLengthSync()](https://github.com/form-data/form-data#integer-getlengthsync) +- [_Integer_ getLength( **function** _callback_ )](https://github.com/form-data/form-data#integer-getlength-function-callback-) +- [_Boolean_ hasKnownLength()](https://github.com/form-data/form-data#boolean-hasknownlength) +- [_Request_ submit( _params_, **function** _callback_ )](https://github.com/form-data/form-data#request-submit-params-function-callback-) +- [_String_ toString()](https://github.com/form-data/form-data#string-tostring) + +#### _Void_ append( **String** _field_, **Mixed** _value_ [, **Mixed** _options_] ) +Append data to the form. You can submit about any format (string, integer, boolean, buffer, etc.). However, Arrays are not supported and need to be turned into strings by the user. +```javascript +var form = new FormData(); +form.append('my_string', 'my value'); +form.append('my_integer', 1); +form.append('my_boolean', true); +form.append('my_buffer', new Buffer(10)); +form.append('my_array_as_json', JSON.stringify(['bird', 'cute'])); +``` + +You may provide a string for options, or an object. +```javascript +// Set filename by providing a string for options +form.append('my_file', fs.createReadStream('/foo/bar.jpg'), 'bar.jpg'); + +// provide an object. +form.append('my_file', fs.createReadStream('/foo/bar.jpg'), { filename: 'bar.jpg', contentType: 'image/jpeg', knownLength: 19806 }); +``` + +#### _Headers_ getHeaders( [**Headers** _userHeaders_] ) +This method adds the correct `content-type` header to the provided array of `userHeaders`. + +#### _String_ getBoundary() +Return the boundary of the formData. By default, the boundary consists of 26 `-` followed by 24 numbers +for example: +```javascript +--------------------------515890814546601021194782 +``` + +#### _Void_ setBoundary(String _boundary_) +Set the boundary string, overriding the default behavior described above. + +_Note: The boundary must be unique and may not appear in the data._ + +#### _Buffer_ getBuffer() +Return the full formdata request package, as a Buffer. You can insert this Buffer in e.g. Axios to send multipart data. +```javascript +var form = new FormData(); +form.append('my_buffer', Buffer.from([0x4a,0x42,0x20,0x52,0x6f,0x63,0x6b,0x73])); +form.append('my_file', fs.readFileSync('/foo/bar.jpg')); + +axios.post('https://example.com/path/to/api', form.getBuffer(), form.getHeaders()); +``` +**Note:** Because the output is of type Buffer, you can only append types that are accepted by Buffer: *string, Buffer, ArrayBuffer, Array, or Array-like Object*. A ReadStream for example will result in an error. + +#### _Integer_ getLengthSync() +Same as `getLength` but synchronous. + +_Note: getLengthSync __doesn't__ calculate streams length._ + +#### _Integer_ getLength(**function** _callback_ ) +Returns the `Content-Length` async. The callback is used to handle errors and continue once the length has been calculated +```javascript +this.getLength(function (err, length) { + if (err) { + this._error(err); + return; + } + + // add content length + request.setHeader('Content-Length', length); + + ... +}.bind(this)); +``` + +#### _Boolean_ hasKnownLength() +Checks if the length of added values is known. + +#### _Request_ submit(_params_, **function** _callback_ ) +Submit the form to a web application. +```javascript +var form = new FormData(); +form.append('my_string', 'Hello World'); + +form.submit('http://example.com/', function (err, res) { + // res – response object (http.IncomingMessage) // + res.resume(); +} ); +``` + +#### _String_ toString() +Returns the form data as a string. Don't use this if you are sending files or buffers, use `getBuffer()` instead. + +### Integration with other libraries + +#### Request + +Form submission using [request](https://github.com/request/request): + +```javascript +var formData = { + my_field: 'my_value', + my_file: fs.createReadStream(__dirname + '/unicycle.jpg'), +}; + +request.post({url:'http://service.com/upload', formData: formData}, function (err, httpResponse, body) { + if (err) { + return console.error('upload failed:', err); + } + console.log('Upload successful! Server responded with:', body); +}); +``` + +For more details see [request readme](https://github.com/request/request#multipartform-data-multipart-form-uploads). + +#### node-fetch + +You can also submit a form using [node-fetch](https://github.com/bitinn/node-fetch): + +```javascript +var form = new FormData(); + +form.append('a', 1); + +fetch('http://example.com', { method: 'POST', body: form }) + .then(function (res) { + return res.json(); + }).then(function (json) { + console.log(json); + }); +``` + +#### axios + +In Node.js you can post a file using [axios](https://github.com/axios/axios): +```javascript +const form = new FormData(); +const stream = fs.createReadStream(PATH_TO_FILE); + +form.append('image', stream); + +// In Node.js environment you need to set boundary in the header field 'Content-Type' by calling method `getHeaders` +const formHeaders = form.getHeaders(); + +axios.post('http://example.com', form, { + headers: { + ...formHeaders, + }, +}) + .then(response => response) + .catch(error => error) +``` + +## Notes + +- ```getLengthSync()``` method DOESN'T calculate length for streams, use ```knownLength``` options as workaround. +- ```getLength(cb)``` will send an error as first parameter of callback if stream length cannot be calculated (e.g. send in custom streams w/o using ```knownLength```). +- ```submit``` will not add `content-length` if form length is unknown or not calculable. +- Starting version `2.x` FormData has dropped support for `node@0.10.x`. +- Starting version `3.x` FormData has dropped support for `node@4.x`. + +## License + +Form-Data is released under the [MIT](License) license. diff --git a/node_modules/form-data/index.d.ts b/node_modules/form-data/index.d.ts new file mode 100644 index 0000000..295e9e9 --- /dev/null +++ b/node_modules/form-data/index.d.ts @@ -0,0 +1,62 @@ +// Definitions by: Carlos Ballesteros Velasco +// Leon Yu +// BendingBender +// Maple Miao + +/// +import * as stream from 'stream'; +import * as http from 'http'; + +export = FormData; + +// Extracted because @types/node doesn't export interfaces. +interface ReadableOptions { + highWaterMark?: number; + encoding?: string; + objectMode?: boolean; + read?(this: stream.Readable, size: number): void; + destroy?(this: stream.Readable, error: Error | null, callback: (error: Error | null) => void): void; + autoDestroy?: boolean; +} + +interface Options extends ReadableOptions { + writable?: boolean; + readable?: boolean; + dataSize?: number; + maxDataSize?: number; + pauseStreams?: boolean; +} + +declare class FormData extends stream.Readable { + constructor(options?: Options); + append(key: string, value: any, options?: FormData.AppendOptions | string): void; + getHeaders(userHeaders?: FormData.Headers): FormData.Headers; + submit( + params: string | FormData.SubmitOptions, + callback?: (error: Error | null, response: http.IncomingMessage) => void + ): http.ClientRequest; + getBuffer(): Buffer; + setBoundary(boundary: string): void; + getBoundary(): string; + getLength(callback: (err: Error | null, length: number) => void): void; + getLengthSync(): number; + hasKnownLength(): boolean; +} + +declare namespace FormData { + interface Headers { + [key: string]: any; + } + + interface AppendOptions { + header?: string | Headers; + knownLength?: number; + filename?: string; + filepath?: string; + contentType?: string; + } + + interface SubmitOptions extends http.RequestOptions { + protocol?: 'https:' | 'http:'; + } +} diff --git a/node_modules/form-data/lib/browser.js b/node_modules/form-data/lib/browser.js new file mode 100644 index 0000000..8950a91 --- /dev/null +++ b/node_modules/form-data/lib/browser.js @@ -0,0 +1,4 @@ +'use strict'; + +/* eslint-env browser */ +module.exports = typeof self === 'object' ? self.FormData : window.FormData; diff --git a/node_modules/form-data/lib/form_data.js b/node_modules/form-data/lib/form_data.js new file mode 100644 index 0000000..cbf498c --- /dev/null +++ b/node_modules/form-data/lib/form_data.js @@ -0,0 +1,498 @@ +'use strict'; + +var CombinedStream = require('combined-stream'); +var util = require('util'); +var path = require('path'); +var http = require('http'); +var https = require('https'); +var parseUrl = require('url').parse; +var fs = require('fs'); +var Stream = require('stream').Stream; +var mime = require('mime-types'); +var asynckit = require('asynckit'); +var setToStringTag = require('es-set-tostringtag'); +var hasOwn = require('hasown'); +var populate = require('./populate.js'); + +/** + * Create readable "multipart/form-data" streams. + * Can be used to submit forms + * and file uploads to other web applications. + * + * @constructor + * @param {object} options - Properties to be added/overriden for FormData and CombinedStream + */ +function FormData(options) { + if (!(this instanceof FormData)) { + return new FormData(options); + } + + this._overheadLength = 0; + this._valueLength = 0; + this._valuesToMeasure = []; + + CombinedStream.call(this); + + options = options || {}; // eslint-disable-line no-param-reassign + for (var option in options) { // eslint-disable-line no-restricted-syntax + this[option] = options[option]; + } +} + +// make it a Stream +util.inherits(FormData, CombinedStream); + +FormData.LINE_BREAK = '\r\n'; +FormData.DEFAULT_CONTENT_TYPE = 'application/octet-stream'; + +FormData.prototype.append = function (field, value, options) { + options = options || {}; // eslint-disable-line no-param-reassign + + // allow filename as single option + if (typeof options === 'string') { + options = { filename: options }; // eslint-disable-line no-param-reassign + } + + var append = CombinedStream.prototype.append.bind(this); + + // all that streamy business can't handle numbers + if (typeof value === 'number' || value == null) { + value = String(value); // eslint-disable-line no-param-reassign + } + + // https://github.com/felixge/node-form-data/issues/38 + if (Array.isArray(value)) { + /* + * Please convert your array into string + * the way web server expects it + */ + this._error(new Error('Arrays are not supported.')); + return; + } + + var header = this._multiPartHeader(field, value, options); + var footer = this._multiPartFooter(); + + append(header); + append(value); + append(footer); + + // pass along options.knownLength + this._trackLength(header, value, options); +}; + +FormData.prototype._trackLength = function (header, value, options) { + var valueLength = 0; + + /* + * used w/ getLengthSync(), when length is known. + * e.g. for streaming directly from a remote server, + * w/ a known file a size, and not wanting to wait for + * incoming file to finish to get its size. + */ + if (options.knownLength != null) { + valueLength += Number(options.knownLength); + } else if (Buffer.isBuffer(value)) { + valueLength = value.length; + } else if (typeof value === 'string') { + valueLength = Buffer.byteLength(value); + } + + this._valueLength += valueLength; + + // @check why add CRLF? does this account for custom/multiple CRLFs? + this._overheadLength += Buffer.byteLength(header) + FormData.LINE_BREAK.length; + + // empty or either doesn't have path or not an http response or not a stream + if (!value || (!value.path && !(value.readable && hasOwn(value, 'httpVersion')) && !(value instanceof Stream))) { + return; + } + + // no need to bother with the length + if (!options.knownLength) { + this._valuesToMeasure.push(value); + } +}; + +FormData.prototype._lengthRetriever = function (value, callback) { + if (hasOwn(value, 'fd')) { + // take read range into a account + // `end` = Infinity –> read file till the end + // + // TODO: Looks like there is bug in Node fs.createReadStream + // it doesn't respect `end` options without `start` options + // Fix it when node fixes it. + // https://github.com/joyent/node/issues/7819 + if (value.end != undefined && value.end != Infinity && value.start != undefined) { + // when end specified + // no need to calculate range + // inclusive, starts with 0 + callback(null, value.end + 1 - (value.start ? value.start : 0)); // eslint-disable-line callback-return + + // not that fast snoopy + } else { + // still need to fetch file size from fs + fs.stat(value.path, function (err, stat) { + if (err) { + callback(err); + return; + } + + // update final size based on the range options + var fileSize = stat.size - (value.start ? value.start : 0); + callback(null, fileSize); + }); + } + + // or http response + } else if (hasOwn(value, 'httpVersion')) { + callback(null, Number(value.headers['content-length'])); // eslint-disable-line callback-return + + // or request stream http://github.com/mikeal/request + } else if (hasOwn(value, 'httpModule')) { + // wait till response come back + value.on('response', function (response) { + value.pause(); + callback(null, Number(response.headers['content-length'])); + }); + value.resume(); + + // something else + } else { + callback('Unknown stream'); // eslint-disable-line callback-return + } +}; + +FormData.prototype._multiPartHeader = function (field, value, options) { + /* + * custom header specified (as string)? + * it becomes responsible for boundary + * (e.g. to handle extra CRLFs on .NET servers) + */ + if (typeof options.header === 'string') { + return options.header; + } + + var contentDisposition = this._getContentDisposition(value, options); + var contentType = this._getContentType(value, options); + + var contents = ''; + var headers = { + // add custom disposition as third element or keep it two elements if not + 'Content-Disposition': ['form-data', 'name="' + field + '"'].concat(contentDisposition || []), + // if no content type. allow it to be empty array + 'Content-Type': [].concat(contentType || []) + }; + + // allow custom headers. + if (typeof options.header === 'object') { + populate(headers, options.header); + } + + var header; + for (var prop in headers) { // eslint-disable-line no-restricted-syntax + if (hasOwn(headers, prop)) { + header = headers[prop]; + + // skip nullish headers. + if (header == null) { + continue; // eslint-disable-line no-restricted-syntax, no-continue + } + + // convert all headers to arrays. + if (!Array.isArray(header)) { + header = [header]; + } + + // add non-empty headers. + if (header.length) { + contents += prop + ': ' + header.join('; ') + FormData.LINE_BREAK; + } + } + } + + return '--' + this.getBoundary() + FormData.LINE_BREAK + contents + FormData.LINE_BREAK; +}; + +FormData.prototype._getContentDisposition = function (value, options) { // eslint-disable-line consistent-return + var filename; + + if (typeof options.filepath === 'string') { + // custom filepath for relative paths + filename = path.normalize(options.filepath).replace(/\\/g, '/'); + } else if (options.filename || (value && (value.name || value.path))) { + /* + * custom filename take precedence + * formidable and the browser add a name property + * fs- and request- streams have path property + */ + filename = path.basename(options.filename || (value && (value.name || value.path))); + } else if (value && value.readable && hasOwn(value, 'httpVersion')) { + // or try http response + filename = path.basename(value.client._httpMessage.path || ''); + } + + if (filename) { + return 'filename="' + filename + '"'; + } +}; + +FormData.prototype._getContentType = function (value, options) { + // use custom content-type above all + var contentType = options.contentType; + + // or try `name` from formidable, browser + if (!contentType && value && value.name) { + contentType = mime.lookup(value.name); + } + + // or try `path` from fs-, request- streams + if (!contentType && value && value.path) { + contentType = mime.lookup(value.path); + } + + // or if it's http-reponse + if (!contentType && value && value.readable && hasOwn(value, 'httpVersion')) { + contentType = value.headers['content-type']; + } + + // or guess it from the filepath or filename + if (!contentType && (options.filepath || options.filename)) { + contentType = mime.lookup(options.filepath || options.filename); + } + + // fallback to the default content type if `value` is not simple value + if (!contentType && value && typeof value === 'object') { + contentType = FormData.DEFAULT_CONTENT_TYPE; + } + + return contentType; +}; + +FormData.prototype._multiPartFooter = function () { + return function (next) { + var footer = FormData.LINE_BREAK; + + var lastPart = this._streams.length === 0; + if (lastPart) { + footer += this._lastBoundary(); + } + + next(footer); + }.bind(this); +}; + +FormData.prototype._lastBoundary = function () { + return '--' + this.getBoundary() + '--' + FormData.LINE_BREAK; +}; + +FormData.prototype.getHeaders = function (userHeaders) { + var header; + var formHeaders = { + 'content-type': 'multipart/form-data; boundary=' + this.getBoundary() + }; + + for (header in userHeaders) { // eslint-disable-line no-restricted-syntax + if (hasOwn(userHeaders, header)) { + formHeaders[header.toLowerCase()] = userHeaders[header]; + } + } + + return formHeaders; +}; + +FormData.prototype.setBoundary = function (boundary) { + if (typeof boundary !== 'string') { + throw new TypeError('FormData boundary must be a string'); + } + this._boundary = boundary; +}; + +FormData.prototype.getBoundary = function () { + if (!this._boundary) { + this._generateBoundary(); + } + + return this._boundary; +}; + +FormData.prototype.getBuffer = function () { + var dataBuffer = new Buffer.alloc(0); // eslint-disable-line new-cap + var boundary = this.getBoundary(); + + // Create the form content. Add Line breaks to the end of data. + for (var i = 0, len = this._streams.length; i < len; i++) { + if (typeof this._streams[i] !== 'function') { + // Add content to the buffer. + if (Buffer.isBuffer(this._streams[i])) { + dataBuffer = Buffer.concat([dataBuffer, this._streams[i]]); + } else { + dataBuffer = Buffer.concat([dataBuffer, Buffer.from(this._streams[i])]); + } + + // Add break after content. + if (typeof this._streams[i] !== 'string' || this._streams[i].substring(2, boundary.length + 2) !== boundary) { + dataBuffer = Buffer.concat([dataBuffer, Buffer.from(FormData.LINE_BREAK)]); + } + } + } + + // Add the footer and return the Buffer object. + return Buffer.concat([dataBuffer, Buffer.from(this._lastBoundary())]); +}; + +FormData.prototype._generateBoundary = function () { + // This generates a 50 character boundary similar to those used by Firefox. + + // They are optimized for boyer-moore parsing. + var boundary = '--------------------------'; + for (var i = 0; i < 24; i++) { + boundary += Math.floor(Math.random() * 10).toString(16); + } + + this._boundary = boundary; +}; + +// Note: getLengthSync DOESN'T calculate streams length +// As workaround one can calculate file size manually and add it as knownLength option +FormData.prototype.getLengthSync = function () { + var knownLength = this._overheadLength + this._valueLength; + + // Don't get confused, there are 3 "internal" streams for each keyval pair so it basically checks if there is any value added to the form + if (this._streams.length) { + knownLength += this._lastBoundary().length; + } + + // https://github.com/form-data/form-data/issues/40 + if (!this.hasKnownLength()) { + /* + * Some async length retrievers are present + * therefore synchronous length calculation is false. + * Please use getLength(callback) to get proper length + */ + this._error(new Error('Cannot calculate proper length in synchronous way.')); + } + + return knownLength; +}; + +// Public API to check if length of added values is known +// https://github.com/form-data/form-data/issues/196 +// https://github.com/form-data/form-data/issues/262 +FormData.prototype.hasKnownLength = function () { + var hasKnownLength = true; + + if (this._valuesToMeasure.length) { + hasKnownLength = false; + } + + return hasKnownLength; +}; + +FormData.prototype.getLength = function (cb) { + var knownLength = this._overheadLength + this._valueLength; + + if (this._streams.length) { + knownLength += this._lastBoundary().length; + } + + if (!this._valuesToMeasure.length) { + process.nextTick(cb.bind(this, null, knownLength)); + return; + } + + asynckit.parallel(this._valuesToMeasure, this._lengthRetriever, function (err, values) { + if (err) { + cb(err); + return; + } + + values.forEach(function (length) { + knownLength += length; + }); + + cb(null, knownLength); + }); +}; + +FormData.prototype.submit = function (params, cb) { + var request; + var options; + var defaults = { method: 'post' }; + + // parse provided url if it's string or treat it as options object + if (typeof params === 'string') { + params = parseUrl(params); // eslint-disable-line no-param-reassign + /* eslint sort-keys: 0 */ + options = populate({ + port: params.port, + path: params.pathname, + host: params.hostname, + protocol: params.protocol + }, defaults); + } else { // use custom params + options = populate(params, defaults); + // if no port provided use default one + if (!options.port) { + options.port = options.protocol === 'https:' ? 443 : 80; + } + } + + // put that good code in getHeaders to some use + options.headers = this.getHeaders(params.headers); + + // https if specified, fallback to http in any other case + if (options.protocol === 'https:') { + request = https.request(options); + } else { + request = http.request(options); + } + + // get content length and fire away + this.getLength(function (err, length) { + if (err && err !== 'Unknown stream') { + this._error(err); + return; + } + + // add content length + if (length) { + request.setHeader('Content-Length', length); + } + + this.pipe(request); + if (cb) { + var onResponse; + + var callback = function (error, responce) { + request.removeListener('error', callback); + request.removeListener('response', onResponse); + + return cb.call(this, error, responce); // eslint-disable-line no-invalid-this + }; + + onResponse = callback.bind(this, null); + + request.on('error', callback); + request.on('response', onResponse); + } + }.bind(this)); + + return request; +}; + +FormData.prototype._error = function (err) { + if (!this.error) { + this.error = err; + this.pause(); + this.emit('error', err); + } +}; + +FormData.prototype.toString = function () { + return '[object FormData]'; +}; +setToStringTag(FormData, 'FormData'); + +// Public API +module.exports = FormData; diff --git a/node_modules/form-data/lib/populate.js b/node_modules/form-data/lib/populate.js new file mode 100644 index 0000000..55ac3bb --- /dev/null +++ b/node_modules/form-data/lib/populate.js @@ -0,0 +1,10 @@ +'use strict'; + +// populates missing values +module.exports = function (dst, src) { + Object.keys(src).forEach(function (prop) { + dst[prop] = dst[prop] || src[prop]; // eslint-disable-line no-param-reassign + }); + + return dst; +}; diff --git a/node_modules/form-data/package.json b/node_modules/form-data/package.json new file mode 100644 index 0000000..6b3d971 --- /dev/null +++ b/node_modules/form-data/package.json @@ -0,0 +1,66 @@ +{ + "author": "Felix Geisendörfer (http://debuggable.com/)", + "name": "form-data", + "description": "A library to create readable \"multipart/form-data\" streams. Can be used to submit forms and file uploads to other web applications.", + "version": "4.0.3", + "repository": { + "type": "git", + "url": "git://github.com/form-data/form-data.git" + }, + "main": "./lib/form_data", + "browser": "./lib/browser", + "typings": "./index.d.ts", + "scripts": { + "pretest": "npm run lint", + "pretests-only": "rimraf coverage test/tmp", + "tests-only": "istanbul cover test/run.js", + "posttests-only": "istanbul report lcov text", + "test": "npm run tests-only", + "posttest": "npx npm@'>=10.2' audit --production", + "lint": "eslint --ext=js,mjs .", + "report": "istanbul report lcov text", + "ci-lint": "is-node-modern 8 && npm run lint || is-node-not-modern 8", + "ci-test": "npm run tests-only && npm run browser && npm run report", + "predebug": "rimraf coverage test/tmp", + "debug": "verbose=1 ./test/run.js", + "browser": "browserify -t browserify-istanbul test/run-browser.js | obake --coverage", + "check": "istanbul check-coverage coverage/coverage*.json", + "files": "pkgfiles --sort=name", + "get-version": "node -e \"console.log(require('./package.json').version)\"", + "update-readme": "sed -i.bak 's/\\/master\\.svg/\\/v'$(npm --silent run get-version)'.svg/g' README.md", + "restore-readme": "mv README.md.bak README.md", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "npm run update-readme", + "postpublish": "npm run restore-readme" + }, + "engines": { + "node": ">= 6" + }, + "dependencies": { + "asynckit": "^0.4.0", + "combined-stream": "^1.0.8", + "es-set-tostringtag": "^2.1.0", + "hasown": "^2.0.2", + "mime-types": "^2.1.12" + }, + "devDependencies": { + "@ljharb/eslint-config": "^21.1.1", + "browserify": "^13.3.0", + "browserify-istanbul": "^2.0.0", + "coveralls": "^3.1.1", + "cross-spawn": "^6.0.6", + "eslint": "=8.8.0", + "fake": "^0.2.2", + "far": "^0.0.7", + "formidable": "^1.2.6", + "in-publish": "^2.0.1", + "is-node-modern": "^1.0.0", + "istanbul": "^0.4.5", + "obake": "^0.1.2", + "pkgfiles": "^2.3.2", + "request": "~2.87.0", + "rimraf": "^2.7.1", + "tape": "^5.9.0" + }, + "license": "MIT" +} diff --git a/node_modules/formdata-polyfill/FormData.js b/node_modules/formdata-polyfill/FormData.js new file mode 100644 index 0000000..8e73660 --- /dev/null +++ b/node_modules/formdata-polyfill/FormData.js @@ -0,0 +1,441 @@ +/* formdata-polyfill. MIT License. Jimmy Wärting */ + +/* global FormData self Blob File */ +/* eslint-disable no-inner-declarations */ + +if (typeof Blob !== 'undefined' && (typeof FormData === 'undefined' || !FormData.prototype.keys)) { + const global = typeof globalThis === 'object' + ? globalThis + : typeof window === 'object' + ? window + : typeof self === 'object' ? self : this + + // keep a reference to native implementation + const _FormData = global.FormData + + // To be monkey patched + const _send = global.XMLHttpRequest && global.XMLHttpRequest.prototype.send + const _fetch = global.Request && global.fetch + const _sendBeacon = global.navigator && global.navigator.sendBeacon + // Might be a worker thread... + const _match = global.Element && global.Element.prototype + + // Unable to patch Request/Response constructor correctly #109 + // only way is to use ES6 class extend + // https://github.com/babel/babel/issues/1966 + + const stringTag = global.Symbol && Symbol.toStringTag + + // Add missing stringTags to blob and files + if (stringTag) { + if (!Blob.prototype[stringTag]) { + Blob.prototype[stringTag] = 'Blob' + } + + if ('File' in global && !File.prototype[stringTag]) { + File.prototype[stringTag] = 'File' + } + } + + // Fix so you can construct your own File + try { + new File([], '') // eslint-disable-line + } catch (a) { + global.File = function File (b, d, c) { + const blob = new Blob(b, c || {}) + const t = c && void 0 !== c.lastModified ? new Date(c.lastModified) : new Date() + + Object.defineProperties(blob, { + name: { + value: d + }, + lastModified: { + value: +t + }, + toString: { + value () { + return '[object File]' + } + } + }) + + if (stringTag) { + Object.defineProperty(blob, stringTag, { + value: 'File' + }) + } + + return blob + } + } + + function ensureArgs (args, expected) { + if (args.length < expected) { + throw new TypeError(`${expected} argument required, but only ${args.length} present.`) + } + } + + /** + * @param {string} name + * @param {string | undefined} filename + * @returns {[string, File|string]} + */ + function normalizeArgs (name, value, filename) { + if (value instanceof Blob) { + filename = filename !== undefined + ? String(filename + '') + : typeof value.name === 'string' + ? value.name + : 'blob' + + if (value.name !== filename || Object.prototype.toString.call(value) === '[object Blob]') { + value = new File([value], filename) + } + return [String(name), value] + } + return [String(name), String(value)] + } + + // normalize line feeds for textarea + // https://html.spec.whatwg.org/multipage/form-elements.html#textarea-line-break-normalisation-transformation + function normalizeLinefeeds (value) { + return value.replace(/\r?\n|\r/g, '\r\n') + } + + /** + * @template T + * @param {ArrayLike} arr + * @param {{ (elm: T): void; }} cb + */ + function each (arr, cb) { + for (let i = 0; i < arr.length; i++) { + cb(arr[i]) + } + } + + const escape = str => str.replace(/\n/g, '%0A').replace(/\r/g, '%0D').replace(/"/g, '%22') + + /** + * @implements {Iterable} + */ + class FormDataPolyfill { + /** + * FormData class + * + * @param {HTMLFormElement=} form + */ + constructor (form) { + /** @type {[string, string|File][]} */ + this._data = [] + + const self = this + form && each(form.elements, (/** @type {HTMLInputElement} */ elm) => { + if ( + !elm.name || + elm.disabled || + elm.type === 'submit' || + elm.type === 'button' || + elm.matches('form fieldset[disabled] *') + ) return + + if (elm.type === 'file') { + const files = elm.files && elm.files.length + ? elm.files + : [new File([], '', { type: 'application/octet-stream' })] // #78 + + each(files, file => { + self.append(elm.name, file) + }) + } else if (elm.type === 'select-multiple' || elm.type === 'select-one') { + each(elm.options, opt => { + !opt.disabled && opt.selected && self.append(elm.name, opt.value) + }) + } else if (elm.type === 'checkbox' || elm.type === 'radio') { + if (elm.checked) self.append(elm.name, elm.value) + } else { + const value = elm.type === 'textarea' ? normalizeLinefeeds(elm.value) : elm.value + self.append(elm.name, value) + } + }) + } + + /** + * Append a field + * + * @param {string} name field name + * @param {string|Blob|File} value string / blob / file + * @param {string=} filename filename to use with blob + * @return {undefined} + */ + append (name, value, filename) { + ensureArgs(arguments, 2) + this._data.push(normalizeArgs(name, value, filename)) + } + + /** + * Delete all fields values given name + * + * @param {string} name Field name + * @return {undefined} + */ + delete (name) { + ensureArgs(arguments, 1) + const result = [] + name = String(name) + + each(this._data, entry => { + entry[0] !== name && result.push(entry) + }) + + this._data = result + } + + /** + * Iterate over all fields as [name, value] + * + * @return {Iterator} + */ + * entries () { + for (var i = 0; i < this._data.length; i++) { + yield this._data[i] + } + } + + /** + * Iterate over all fields + * + * @param {Function} callback Executed for each item with parameters (value, name, thisArg) + * @param {Object=} thisArg `this` context for callback function + */ + forEach (callback, thisArg) { + ensureArgs(arguments, 1) + for (const [name, value] of this) { + callback.call(thisArg, value, name, this) + } + } + + /** + * Return first field value given name + * or null if non existent + * + * @param {string} name Field name + * @return {string|File|null} value Fields value + */ + get (name) { + ensureArgs(arguments, 1) + const entries = this._data + name = String(name) + for (let i = 0; i < entries.length; i++) { + if (entries[i][0] === name) { + return entries[i][1] + } + } + return null + } + + /** + * Return all fields values given name + * + * @param {string} name Fields name + * @return {Array} [{String|File}] + */ + getAll (name) { + ensureArgs(arguments, 1) + const result = [] + name = String(name) + each(this._data, data => { + data[0] === name && result.push(data[1]) + }) + + return result + } + + /** + * Check for field name existence + * + * @param {string} name Field name + * @return {boolean} + */ + has (name) { + ensureArgs(arguments, 1) + name = String(name) + for (let i = 0; i < this._data.length; i++) { + if (this._data[i][0] === name) { + return true + } + } + return false + } + + /** + * Iterate over all fields name + * + * @return {Iterator} + */ + * keys () { + for (const [name] of this) { + yield name + } + } + + /** + * Overwrite all values given name + * + * @param {string} name Filed name + * @param {string} value Field value + * @param {string=} filename Filename (optional) + */ + set (name, value, filename) { + ensureArgs(arguments, 2) + name = String(name) + /** @type {[string, string|File][]} */ + const result = [] + const args = normalizeArgs(name, value, filename) + let replace = true + + // - replace the first occurrence with same name + // - discards the remaining with same name + // - while keeping the same order items where added + each(this._data, data => { + data[0] === name + ? replace && (replace = !result.push(args)) + : result.push(data) + }) + + replace && result.push(args) + + this._data = result + } + + /** + * Iterate over all fields + * + * @return {Iterator} + */ + * values () { + for (const [, value] of this) { + yield value + } + } + + /** + * Return a native (perhaps degraded) FormData with only a `append` method + * Can throw if it's not supported + * + * @return {FormData} + */ + ['_asNative'] () { + const fd = new _FormData() + + for (const [name, value] of this) { + fd.append(name, value) + } + + return fd + } + + /** + * [_blob description] + * + * @return {Blob} [description] + */ + ['_blob'] () { + const boundary = '----formdata-polyfill-' + Math.random(), + chunks = [], + p = `--${boundary}\r\nContent-Disposition: form-data; name="` + this.forEach((value, name) => typeof value == 'string' + ? chunks.push(p + escape(normalizeLinefeeds(name)) + `"\r\n\r\n${normalizeLinefeeds(value)}\r\n`) + : chunks.push(p + escape(normalizeLinefeeds(name)) + `"; filename="${escape(value.name)}"\r\nContent-Type: ${value.type||"application/octet-stream"}\r\n\r\n`, value, `\r\n`)) + chunks.push(`--${boundary}--`) + return new Blob(chunks, { + type: "multipart/form-data; boundary=" + boundary + }) + } + + /** + * The class itself is iterable + * alias for formdata.entries() + * + * @return {Iterator} + */ + [Symbol.iterator] () { + return this.entries() + } + + /** + * Create the default string description. + * + * @return {string} [object FormData] + */ + toString () { + return '[object FormData]' + } + } + + if (_match && !_match.matches) { + _match.matches = + _match.matchesSelector || + _match.mozMatchesSelector || + _match.msMatchesSelector || + _match.oMatchesSelector || + _match.webkitMatchesSelector || + function (s) { + var matches = (this.document || this.ownerDocument).querySelectorAll(s) + var i = matches.length + while (--i >= 0 && matches.item(i) !== this) {} + return i > -1 + } + } + + if (stringTag) { + /** + * Create the default string description. + * It is accessed internally by the Object.prototype.toString(). + */ + FormDataPolyfill.prototype[stringTag] = 'FormData' + } + + // Patch xhr's send method to call _blob transparently + if (_send) { + const setRequestHeader = global.XMLHttpRequest.prototype.setRequestHeader + + global.XMLHttpRequest.prototype.setRequestHeader = function (name, value) { + setRequestHeader.call(this, name, value) + if (name.toLowerCase() === 'content-type') this._hasContentType = true + } + + global.XMLHttpRequest.prototype.send = function (data) { + // need to patch send b/c old IE don't send blob's type (#44) + if (data instanceof FormDataPolyfill) { + const blob = data['_blob']() + if (!this._hasContentType) this.setRequestHeader('Content-Type', blob.type) + _send.call(this, blob) + } else { + _send.call(this, data) + } + } + } + + // Patch fetch's function to call _blob transparently + if (_fetch) { + global.fetch = function (input, init) { + if (init && init.body && init.body instanceof FormDataPolyfill) { + init.body = init.body['_blob']() + } + + return _fetch.call(this, input, init) + } + } + + // Patch navigator.sendBeacon to use native FormData + if (_sendBeacon) { + global.navigator.sendBeacon = function (url, data) { + if (data instanceof FormDataPolyfill) { + data = data['_asNative']() + } + return _sendBeacon.call(this, url, data) + } + } + + global['FormData'] = FormDataPolyfill +} diff --git a/node_modules/formdata-polyfill/LICENSE b/node_modules/formdata-polyfill/LICENSE new file mode 100644 index 0000000..fd0f555 --- /dev/null +++ b/node_modules/formdata-polyfill/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2016 Jimmy Karl Roland Wärting + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/formdata-polyfill/README.md b/node_modules/formdata-polyfill/README.md new file mode 100644 index 0000000..8355299 --- /dev/null +++ b/node_modules/formdata-polyfill/README.md @@ -0,0 +1,145 @@ +### A `FormData` polyfill for the browser ...and a module for NodeJS (`New!`) + +```bash +npm install formdata-polyfill +``` + +The browser polyfill will likely have done its part already, and i hope you stop supporting old browsers c",)
+But NodeJS still laks a proper FormData
The good old form-data package is a very old and isn't spec compatible and dose some abnormal stuff to construct and read FormData instances that other http libraries are not happy about when it comes to follow the spec. + +### The NodeJS / ESM version +- The modular (~2.3 KiB minified uncompressed) version of this package is independent of any browser stuff and don't patch anything +- It's as pure/spec compatible as it possible gets the test are run by WPT. +- It's compatible with [node-fetch](https://github.com/node-fetch/node-fetch). +- It have higher platform dependencies as it uses classes, symbols, ESM & private fields +- Only dependency it has is [fetch-blob](https://github.com/node-fetch/fetch-blob) + +```js +// Node example +import fetch from 'node-fetch' +import File from 'fetch-blob/file.js' +import { fileFromSync } from 'fetch-blob/from.js' +import { FormData } from 'formdata-polyfill/esm.min.js' + +const file = fileFromSync('./README.md') +const fd = new FormData() + +fd.append('file-upload', new File(['abc'], 'hello-world.txt')) +fd.append('file-upload', file) + +// it's also possible to append file/blob look-a-like items +// if you have streams coming from other destinations +fd.append('file-upload', { + size: 123, + type: '', + name: 'cat-video.mp4', + stream() { return stream }, + [Symbol.toStringTag]: 'File' +}) + +fetch('https://httpbin.org/post', { method: 'POST', body: fd }) +``` + +---- + +It also comes with way to convert FormData into Blobs - it's not something that every developer should have to deal with. +It's mainly for [node-fetch](https://github.com/node-fetch/node-fetch) and other http library to ease the process of serializing a FormData into a blob and just wish to deal with Blobs instead (Both Deno and Undici adapted a version of this [formDataToBlob](https://github.com/jimmywarting/FormData/blob/5ddea9e0de2fc5e246ab1b2f9d404dee0c319c02/formdata-to-blob.js) to the core and passes all WPT tests run by the browser itself) +```js +import { Readable } from 'node:stream' +import { FormData, formDataToBlob } from 'formdata-polyfill/esm.min.js' + +const blob = formDataToBlob(new FormData()) +fetch('https://httpbin.org/post', { method: 'POST', body: blob }) + +// node built in http and other similar http library have to do: +const stream = Readable.from(blob.stream()) +const req = http.request('http://httpbin.org/post', { + method: 'post', + headers: { + 'Content-Length': blob.size, + 'Content-Type': blob.type + } +}) +stream.pipe(req) +``` + +PS: blob & file that are appended to the FormData will not be read until any of the serialized blob read-methods gets called +...so uploading very large files is no biggie + +### Browser polyfill + +usage: + +```js +import 'formdata-polyfill' // that's it +``` + +The browser polyfill conditionally replaces the native implementation rather than fixing the missing functions, +since otherwise there is no way to get or delete existing values in the FormData object. +Therefore this also patches `XMLHttpRequest.prototype.send` and `fetch` to send the `FormData` as a blob, +and `navigator.sendBeacon` to send native `FormData`. + +I was unable to patch the Response/Request constructor +so if you are constructing them with FormData then you need to call `fd._blob()` manually. + +```js +new Request(url, { + method: 'post', + body: fd._blob ? fd._blob() : fd +}) +``` + +Dependencies +--- + +If you need to support IE <= 9 then I recommend you to include eligrey's [blob.js] +(which i hope you don't - since IE is now dead) + +
+ Updating from 2.x to 3.x + +Previously you had to import the polyfill and use that, +since it didn't replace the global (existing) FormData implementation. +But now it transparently calls `_blob()` for you when you are sending something with fetch or XHR, +by way of monkey-patching the `XMLHttpRequest.prototype.send` and `fetch` functions. + +So you maybe had something like this: + +```javascript +var FormData = require('formdata-polyfill') +var fd = new FormData(form) +xhr.send(fd._blob()) +``` + +There is no longer anything exported from the module +(though you of course still need to import it to install the polyfill), +so you can now use the FormData object as normal: + +```javascript +require('formdata-polyfill') +var fd = new FormData(form) +xhr.send(fd) +``` + +
+ + + +Native Browser compatibility (as of 2021-05-08) +--- +Based on this you can decide for yourself if you need this polyfill. + +[![screenshot](https://user-images.githubusercontent.com/1148376/117550329-0993aa80-b040-11eb-976c-14e31f1a3ba4.png)](https://developer.mozilla.org/en-US/docs/Web/API/FormData#Browser_compatibility) + + + +This normalizes support for the FormData API: + + - `append` with filename + - `delete()`, `get()`, `getAll()`, `has()`, `set()` + - `entries()`, `keys()`, `values()`, and support for `for...of` + - Available in web workers (just include the polyfill) + + [npm-image]: https://img.shields.io/npm/v/formdata-polyfill.svg + [npm-url]: https://www.npmjs.com/package/formdata-polyfill + [blob.js]: https://github.com/eligrey/Blob.js diff --git a/node_modules/formdata-polyfill/esm.min.d.ts b/node_modules/formdata-polyfill/esm.min.d.ts new file mode 100644 index 0000000..b45f42e --- /dev/null +++ b/node_modules/formdata-polyfill/esm.min.d.ts @@ -0,0 +1,5 @@ +export declare const FormData: { + new (): FormData; + prototype: FormData; +}; +export declare function formDataToBlob(formData: FormData): Blob; diff --git a/node_modules/formdata-polyfill/esm.min.js b/node_modules/formdata-polyfill/esm.min.js new file mode 100644 index 0000000..745ca29 --- /dev/null +++ b/node_modules/formdata-polyfill/esm.min.js @@ -0,0 +1,40 @@ +/*! formdata-polyfill. MIT License. Jimmy Wärting */ + +import C from 'fetch-blob' +import F from 'fetch-blob/file.js' + +var {toStringTag:t,iterator:i,hasInstance:h}=Symbol, +r=Math.random, +m='append,set,get,getAll,delete,keys,values,entries,forEach,constructor'.split(','), +f=(a,b,c)=>(a+='',/^(Blob|File)$/.test(b && b[t])?[(c=c!==void 0?c+'':b[t]=='File'?b.name:'blob',a),b.name!==c||b[t]=='blob'?new F([b],c,b):b]:[a,b+'']), +e=(c,f)=>(f?c:c.replace(/\r?\n|\r/g,'\r\n')).replace(/\n/g,'%0A').replace(/\r/g,'%0D').replace(/"/g,'%22'), +x=(n, a, e)=>{if(a.lengthtypeof o[m]!='function')} +append(...a){x('append',arguments,2);this.#d.push(f(...a))} +delete(a){x('delete',arguments,1);a+='';this.#d=this.#d.filter(([b])=>b!==a)} +get(a){x('get',arguments,1);a+='';for(var b=this.#d,l=b.length,c=0;cc[0]===a&&b.push(c[1]));return b} +has(a){x('has',arguments,1);a+='';return this.#d.some(b=>b[0]===a)} +forEach(a,b){x('forEach',arguments,1);for(var [c,d]of this)a.call(b,d,c,this)} +set(...a){x('set',arguments,2);var b=[],c=!0;a=f(...a);this.#d.forEach(d=>{d[0]===a[0]?c&&(c=!b.push(a)):b.push(d)});c&&b.push(a);this.#d=b} +*entries(){yield*this.#d} +*keys(){for(var[a]of this)yield a} +*values(){for(var[,a]of this)yield a}} + +/** @param {FormData} F */ +export function formDataToBlob (F,B=C){ +var b=`${r()}${r()}`.replace(/\./g, '').slice(-28).padStart(32, '-'),c=[],p=`--${b}\r\nContent-Disposition: form-data; name="` +F.forEach((v,n)=>typeof v=='string' +?c.push(p+e(n)+`"\r\n\r\n${v.replace(/\r(?!\n)|(? */ + +const escape = (str, filename) => + (filename ? str : str.replace(/\r?\n|\r/g, '\r\n')) + .replace(/\n/g, '%0A') + .replace(/\r/g, '%0D') + .replace(/"/g, '%22') + +/** + * pure function to convert any formData instance to a Blob + * instances synchronous without reading all of the files + * + * @param {FormData|*} formData an instance of a formData Class + * @param {Blob|*} [BlobClass=Blob] the Blob class to use when constructing it + */ +export function formDataToBlob (formData, BlobClass = Blob) { + const boundary = ('----formdata-polyfill-' + Math.random()) + const chunks = [] + const prefix = `--${boundary}\r\nContent-Disposition: form-data; name="` + + for (let [name, value] of formData) { + if (typeof value === 'string') { + chunks.push(prefix + escape(name) + `"\r\n\r\n${value.replace(/\r(?!\n)|(? */ +;(function(){var h;function l(a){var b=0;return function(){return b>>0)+"_",e=0;return b}); +r("Symbol.iterator",function(a){if(a)return a;a=Symbol("Symbol.iterator");for(var b="Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array".split(" "),c=0;c=12.20.0" + }, + "keywords": [ + "formdata", + "fetch", + "node-fetch", + "html5", + "browser", + "polyfill" + ], + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/FormData/issues" + }, + "homepage": "https://github.com/jimmywarting/FormData#readme", + "dependencies": { + "fetch-blob": "^3.1.2" + }, + "devDependencies": { + "@types/google-closure-compiler": "^0.0.19", + "@types/node": "^16.7.10", + "google-closure-compiler": "^20210808.0.0" + } +} diff --git a/node_modules/function-bind/.eslintrc b/node_modules/function-bind/.eslintrc new file mode 100644 index 0000000..71a054f --- /dev/null +++ b/node_modules/function-bind/.eslintrc @@ -0,0 +1,21 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "func-name-matching": 0, + "indent": [2, 4], + "no-new-func": [1], + }, + + "overrides": [ + { + "files": "test/**", + "rules": { + "max-lines-per-function": 0, + "strict": [0] + }, + }, + ], +} diff --git a/node_modules/function-bind/.github/FUNDING.yml b/node_modules/function-bind/.github/FUNDING.yml new file mode 100644 index 0000000..7448219 --- /dev/null +++ b/node_modules/function-bind/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/function-bind +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/function-bind/.github/SECURITY.md b/node_modules/function-bind/.github/SECURITY.md new file mode 100644 index 0000000..82e4285 --- /dev/null +++ b/node_modules/function-bind/.github/SECURITY.md @@ -0,0 +1,3 @@ +# Security + +Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report. diff --git a/node_modules/function-bind/.nycrc b/node_modules/function-bind/.nycrc new file mode 100644 index 0000000..1826526 --- /dev/null +++ b/node_modules/function-bind/.nycrc @@ -0,0 +1,13 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "lines": 86, + "statements": 85.93, + "functions": 82.43, + "branches": 76.06, + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/function-bind/CHANGELOG.md b/node_modules/function-bind/CHANGELOG.md new file mode 100644 index 0000000..f9e6cc0 --- /dev/null +++ b/node_modules/function-bind/CHANGELOG.md @@ -0,0 +1,136 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.1.2](https://github.com/ljharb/function-bind/compare/v1.1.1...v1.1.2) - 2023-10-12 + +### Merged + +- Point to the correct file [`#16`](https://github.com/ljharb/function-bind/pull/16) + +### Commits + +- [Tests] migrate tests to Github Actions [`4f8b57c`](https://github.com/ljharb/function-bind/commit/4f8b57c02f2011fe9ae353d5e74e8745f0988af8) +- [Tests] remove `jscs` [`90eb2ed`](https://github.com/ljharb/function-bind/commit/90eb2edbeefd5b76cd6c3a482ea3454db169b31f) +- [meta] update `.gitignore` [`53fcdc3`](https://github.com/ljharb/function-bind/commit/53fcdc371cd66634d6e9b71c836a50f437e89fed) +- [Tests] up to `node` `v11.10`, `v10.15`, `v9.11`, `v8.15`, `v6.16`, `v4.9`; use `nvm install-latest-npm`; run audit script in tests [`1fe8f6e`](https://github.com/ljharb/function-bind/commit/1fe8f6e9aed0dfa8d8b3cdbd00c7f5ea0cd2b36e) +- [meta] add `auto-changelog` [`1921fcb`](https://github.com/ljharb/function-bind/commit/1921fcb5b416b63ffc4acad051b6aad5722f777d) +- [Robustness] remove runtime dependency on all builtins except `.apply` [`f743e61`](https://github.com/ljharb/function-bind/commit/f743e61aa6bb2360358c04d4884c9db853d118b7) +- Docs: enable badges; update wording [`503cb12`](https://github.com/ljharb/function-bind/commit/503cb12d998b5f91822776c73332c7adcd6355dd) +- [readme] update badges [`290c5db`](https://github.com/ljharb/function-bind/commit/290c5dbbbda7264efaeb886552a374b869a4bb48) +- [Tests] switch to nyc for coverage [`ea360ba`](https://github.com/ljharb/function-bind/commit/ea360ba907fc2601ed18d01a3827fa2d3533cdf8) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `tape` [`cae5e9e`](https://github.com/ljharb/function-bind/commit/cae5e9e07a5578dc6df26c03ee22851ce05b943c) +- [meta] add `funding` field; create FUNDING.yml [`c9f4274`](https://github.com/ljharb/function-bind/commit/c9f4274aa80ea3aae9657a3938fdba41a3b04ca6) +- [Tests] fix eslint errors from #15 [`f69aaa2`](https://github.com/ljharb/function-bind/commit/f69aaa2beb2fdab4415bfb885760a699d0b9c964) +- [actions] fix permissions [`99a0cd9`](https://github.com/ljharb/function-bind/commit/99a0cd9f3b5bac223a0d572f081834cd73314be7) +- [meta] use `npmignore` to autogenerate an npmignore file [`f03b524`](https://github.com/ljharb/function-bind/commit/f03b524ca91f75a109a5d062f029122c86ecd1ae) +- [Dev Deps] update `@ljharb/eslint‑config`, `eslint`, `tape` [`7af9300`](https://github.com/ljharb/function-bind/commit/7af930023ae2ce7645489532821e4fbbcd7a2280) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `covert`, `tape` [`64a9127`](https://github.com/ljharb/function-bind/commit/64a9127ab0bd331b93d6572eaf6e9971967fc08c) +- [Tests] use `aud` instead of `npm audit` [`e75069c`](https://github.com/ljharb/function-bind/commit/e75069c50010a8fcce2a9ce2324934c35fdb4386) +- [Dev Deps] update `@ljharb/eslint-config`, `aud`, `tape` [`d03555c`](https://github.com/ljharb/function-bind/commit/d03555ca59dea3b71ce710045e4303b9e2619e28) +- [meta] add `safe-publish-latest` [`9c8f809`](https://github.com/ljharb/function-bind/commit/9c8f8092aed027d7e80c94f517aa892385b64f09) +- [Dev Deps] update `@ljharb/eslint-config`, `tape` [`baf6893`](https://github.com/ljharb/function-bind/commit/baf6893e27f5b59abe88bc1995e6f6ed1e527397) +- [meta] create SECURITY.md [`4db1779`](https://github.com/ljharb/function-bind/commit/4db17799f1f28ae294cb95e0081ca2b591c3911b) +- [Tests] add `npm run audit` [`c8b38ec`](https://github.com/ljharb/function-bind/commit/c8b38ec40ed3f85dabdee40ed4148f1748375bc2) +- Revert "Point to the correct file" [`05cdf0f`](https://github.com/ljharb/function-bind/commit/05cdf0fa205c6a3c5ba40bbedd1dfa9874f915c9) + +## [v1.1.1](https://github.com/ljharb/function-bind/compare/v1.1.0...v1.1.1) - 2017-08-28 + +### Commits + +- [Tests] up to `node` `v8`; newer npm breaks on older node; fix scripts [`817f7d2`](https://github.com/ljharb/function-bind/commit/817f7d28470fdbff8ef608d4d565dd4d1430bc5e) +- [Dev Deps] update `eslint`, `jscs`, `tape`, `@ljharb/eslint-config` [`854288b`](https://github.com/ljharb/function-bind/commit/854288b1b6f5c555f89aceb9eff1152510262084) +- [Dev Deps] update `tape`, `jscs`, `eslint`, `@ljharb/eslint-config` [`83e639f`](https://github.com/ljharb/function-bind/commit/83e639ff74e6cd6921285bccec22c1bcf72311bd) +- Only apps should have lockfiles [`5ed97f5`](https://github.com/ljharb/function-bind/commit/5ed97f51235c17774e0832e122abda0f3229c908) +- Use a SPDX-compliant “license” field. [`5feefea`](https://github.com/ljharb/function-bind/commit/5feefea0dc0193993e83e5df01ded424403a5381) + +## [v1.1.0](https://github.com/ljharb/function-bind/compare/v1.0.2...v1.1.0) - 2016-02-14 + +### Commits + +- Update `eslint`, `tape`; use my personal shared `eslint` config [`9c9062a`](https://github.com/ljharb/function-bind/commit/9c9062abbe9dd70b59ea2c3a3c3a81f29b457097) +- Add `npm run eslint` [`dd96c56`](https://github.com/ljharb/function-bind/commit/dd96c56720034a3c1ffee10b8a59a6f7c53e24ad) +- [New] return the native `bind` when available. [`82186e0`](https://github.com/ljharb/function-bind/commit/82186e03d73e580f95ff167e03f3582bed90ed72) +- [Dev Deps] update `tape`, `jscs`, `eslint`, `@ljharb/eslint-config` [`a3dd767`](https://github.com/ljharb/function-bind/commit/a3dd76720c795cb7f4586b0544efabf8aa107b8b) +- Update `eslint` [`3dae2f7`](https://github.com/ljharb/function-bind/commit/3dae2f7423de30a2d20313ddb1edc19660142fe9) +- Update `tape`, `covert`, `jscs` [`a181eee`](https://github.com/ljharb/function-bind/commit/a181eee0cfa24eb229c6e843a971f36e060a2f6a) +- [Tests] up to `node` `v5.6`, `v4.3` [`964929a`](https://github.com/ljharb/function-bind/commit/964929a6a4ddb36fb128de2bcc20af5e4f22e1ed) +- Test up to `io.js` `v2.1` [`2be7310`](https://github.com/ljharb/function-bind/commit/2be7310f2f74886a7124ca925be411117d41d5ea) +- Update `tape`, `jscs`, `eslint`, `@ljharb/eslint-config` [`45f3d68`](https://github.com/ljharb/function-bind/commit/45f3d6865c6ca93726abcef54febe009087af101) +- [Dev Deps] update `tape`, `jscs` [`6e1340d`](https://github.com/ljharb/function-bind/commit/6e1340d94642deaecad3e717825db641af4f8b1f) +- [Tests] up to `io.js` `v3.3`, `node` `v4.1` [`d9bad2b`](https://github.com/ljharb/function-bind/commit/d9bad2b778b1b3a6dd2876087b88b3acf319f8cc) +- Update `eslint` [`935590c`](https://github.com/ljharb/function-bind/commit/935590caa024ab356102e4858e8fc315b2ccc446) +- [Dev Deps] update `jscs`, `eslint`, `@ljharb/eslint-config` [`8c9a1ef`](https://github.com/ljharb/function-bind/commit/8c9a1efd848e5167887aa8501857a0940a480c57) +- Test on `io.js` `v2.2` [`9a3a38c`](https://github.com/ljharb/function-bind/commit/9a3a38c92013aed6e108666e7bd40969b84ac86e) +- Run `travis-ci` tests on `iojs` and `node` v0.12; speed up builds; allow 0.8 failures. [`69afc26`](https://github.com/ljharb/function-bind/commit/69afc2617405b147dd2a8d8ae73ca9e9283f18b4) +- [Dev Deps] Update `tape`, `eslint` [`36c1be0`](https://github.com/ljharb/function-bind/commit/36c1be0ab12b45fe5df6b0fdb01a5d5137fd0115) +- Update `tape`, `jscs` [`98d8303`](https://github.com/ljharb/function-bind/commit/98d8303cd5ca1c6b8f985469f86b0d44d7d45f6e) +- Update `jscs` [`9633a4e`](https://github.com/ljharb/function-bind/commit/9633a4e9fbf82051c240855166e468ba8ba0846f) +- Update `tape`, `jscs` [`c80ef0f`](https://github.com/ljharb/function-bind/commit/c80ef0f46efc9791e76fa50de4414092ac147831) +- Test up to `io.js` `v3.0` [`7e2c853`](https://github.com/ljharb/function-bind/commit/7e2c8537d52ab9cf5a655755561d8917684c0df4) +- Test on `io.js` `v2.4` [`5a199a2`](https://github.com/ljharb/function-bind/commit/5a199a27ba46795ba5eaf0845d07d4b8232895c9) +- Test on `io.js` `v2.3` [`a511b88`](https://github.com/ljharb/function-bind/commit/a511b8896de0bddf3b56862daa416c701f4d0453) +- Fixing a typo from 822b4e1938db02dc9584aa434fd3a45cb20caf43 [`732d6b6`](https://github.com/ljharb/function-bind/commit/732d6b63a9b33b45230e630dbcac7a10855d3266) +- Update `jscs` [`da52a48`](https://github.com/ljharb/function-bind/commit/da52a4886c06d6490f46ae30b15e4163ba08905d) +- Lock covert to v1.0.0. [`d6150fd`](https://github.com/ljharb/function-bind/commit/d6150fda1e6f486718ebdeff823333d9e48e7430) + +## [v1.0.2](https://github.com/ljharb/function-bind/compare/v1.0.1...v1.0.2) - 2014-10-04 + +## [v1.0.1](https://github.com/ljharb/function-bind/compare/v1.0.0...v1.0.1) - 2014-10-03 + +### Merged + +- make CI build faster [`#3`](https://github.com/ljharb/function-bind/pull/3) + +### Commits + +- Using my standard jscs.json [`d8ee94c`](https://github.com/ljharb/function-bind/commit/d8ee94c993eff0a84cf5744fe6a29627f5cffa1a) +- Adding `npm run lint` [`7571ab7`](https://github.com/ljharb/function-bind/commit/7571ab7dfdbd99b25a1dbb2d232622bd6f4f9c10) +- Using consistent indentation [`e91a1b1`](https://github.com/ljharb/function-bind/commit/e91a1b13a61e99ec1e530e299b55508f74218a95) +- Updating jscs [`7e17892`](https://github.com/ljharb/function-bind/commit/7e1789284bc629bc9c1547a61c9b227bbd8c7a65) +- Using consistent quotes [`c50b57f`](https://github.com/ljharb/function-bind/commit/c50b57fcd1c5ec38320979c837006069ebe02b77) +- Adding keywords [`cb94631`](https://github.com/ljharb/function-bind/commit/cb946314eed35f21186a25fb42fc118772f9ee00) +- Directly export a function expression instead of using a declaration, and relying on hoisting. [`5a33c5f`](https://github.com/ljharb/function-bind/commit/5a33c5f45642de180e0d207110bf7d1843ceb87c) +- Naming npm URL and badge in README; use SVG [`2aef8fc`](https://github.com/ljharb/function-bind/commit/2aef8fcb79d54e63a58ae557c4e60949e05d5e16) +- Naming deps URLs in README [`04228d7`](https://github.com/ljharb/function-bind/commit/04228d766670ee45ca24e98345c1f6a7621065b5) +- Naming travis-ci URLs in README; using SVG [`62c810c`](https://github.com/ljharb/function-bind/commit/62c810c2f54ced956cd4d4ab7b793055addfe36e) +- Make sure functions are invoked correctly (also passing coverage tests) [`2b289b4`](https://github.com/ljharb/function-bind/commit/2b289b4dfbf037ffcfa4dc95eb540f6165e9e43a) +- Removing the strict mode pragmas; they make tests fail. [`1aa701d`](https://github.com/ljharb/function-bind/commit/1aa701d199ddc3782476e8f7eef82679be97b845) +- Adding myself as a contributor [`85fd57b`](https://github.com/ljharb/function-bind/commit/85fd57b0860e5a7af42de9a287f3f265fc6d72fc) +- Adding strict mode pragmas [`915b08e`](https://github.com/ljharb/function-bind/commit/915b08e084c86a722eafe7245e21db74aa21ca4c) +- Adding devDeps URLs to README [`4ccc731`](https://github.com/ljharb/function-bind/commit/4ccc73112c1769859e4ca3076caf4086b3cba2cd) +- Fixing the description. [`a7a472c`](https://github.com/ljharb/function-bind/commit/a7a472cf649af515c635cf560fc478fbe48999c8) +- Using a function expression instead of a function declaration. [`b5d3e4e`](https://github.com/ljharb/function-bind/commit/b5d3e4ea6aaffc63888953eeb1fbc7ff45f1fa14) +- Updating tape [`f086be6`](https://github.com/ljharb/function-bind/commit/f086be6029fb56dde61a258c1340600fa174d1e0) +- Updating jscs [`5f9bdb3`](https://github.com/ljharb/function-bind/commit/5f9bdb375ab13ba48f30852aab94029520c54d71) +- Updating jscs [`9b409ba`](https://github.com/ljharb/function-bind/commit/9b409ba6118e23395a4e5d83ef39152aab9d3bfc) +- Run coverage as part of tests. [`8e1b6d4`](https://github.com/ljharb/function-bind/commit/8e1b6d459f047d1bd4fee814e01247c984c80bd0) +- Run linter as part of tests [`c1ca83f`](https://github.com/ljharb/function-bind/commit/c1ca83f832df94587d09e621beba682fabfaa987) +- Updating covert [`701e837`](https://github.com/ljharb/function-bind/commit/701e83774b57b4d3ef631e1948143f43a72f4bb9) + +## [v1.0.0](https://github.com/ljharb/function-bind/compare/v0.2.0...v1.0.0) - 2014-08-09 + +### Commits + +- Make sure old and unstable nodes don't fail Travis [`27adca3`](https://github.com/ljharb/function-bind/commit/27adca34a4ab6ad67b6dfde43942a1b103ce4d75) +- Fixing an issue when the bound function is called as a constructor in ES3. [`e20122d`](https://github.com/ljharb/function-bind/commit/e20122d267d92ce553859b280cbbea5d27c07731) +- Adding `npm run coverage` [`a2e29c4`](https://github.com/ljharb/function-bind/commit/a2e29c4ecaef9e2f6cd1603e868c139073375502) +- Updating tape [`b741168`](https://github.com/ljharb/function-bind/commit/b741168b12b235b1717ff696087645526b69213c) +- Upgrading tape [`63631a0`](https://github.com/ljharb/function-bind/commit/63631a04c7fbe97cc2fa61829cc27246d6986f74) +- Updating tape [`363cb46`](https://github.com/ljharb/function-bind/commit/363cb46dafb23cb3e347729a22f9448051d78464) + +## v0.2.0 - 2014-03-23 + +### Commits + +- Updating test coverage to match es5-shim. [`aa94d44`](https://github.com/ljharb/function-bind/commit/aa94d44b8f9d7f69f10e060db7709aa7a694e5d4) +- initial [`942ee07`](https://github.com/ljharb/function-bind/commit/942ee07e94e542d91798137bc4b80b926137e066) +- Setting the bound function's length properly. [`079f46a`](https://github.com/ljharb/function-bind/commit/079f46a2d3515b7c0b308c2c13fceb641f97ca25) +- Ensuring that some older browsers will throw when given a regex. [`36ac55b`](https://github.com/ljharb/function-bind/commit/36ac55b87f460d4330253c92870aa26fbfe8227f) +- Removing npm scripts that don't have dependencies [`9d2be60`](https://github.com/ljharb/function-bind/commit/9d2be600002cb8bc8606f8f3585ad3e05868c750) +- Updating tape [`297a4ac`](https://github.com/ljharb/function-bind/commit/297a4acc5464db381940aafb194d1c88f4e678f3) +- Skipping length tests for now. [`d9891ea`](https://github.com/ljharb/function-bind/commit/d9891ea4d2aaffa69f408339cdd61ff740f70565) +- don't take my tea [`dccd930`](https://github.com/ljharb/function-bind/commit/dccd930bfd60ea10cb178d28c97550c3bc8c1e07) diff --git a/node_modules/function-bind/LICENSE b/node_modules/function-bind/LICENSE new file mode 100644 index 0000000..62d6d23 --- /dev/null +++ b/node_modules/function-bind/LICENSE @@ -0,0 +1,20 @@ +Copyright (c) 2013 Raynos. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + diff --git a/node_modules/function-bind/README.md b/node_modules/function-bind/README.md new file mode 100644 index 0000000..814c20b --- /dev/null +++ b/node_modules/function-bind/README.md @@ -0,0 +1,46 @@ +# function-bind [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] + +[![dependency status][deps-svg]][deps-url] +[![dev dependency status][dev-deps-svg]][dev-deps-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +Implementation of function.prototype.bind + +Old versions of phantomjs, Internet Explorer < 9, and node < 0.6 don't support `Function.prototype.bind`. + +## Example + +```js +Function.prototype.bind = require("function-bind") +``` + +## Installation + +`npm install function-bind` + +## Contributors + + - Raynos + +## MIT Licenced + +[package-url]: https://npmjs.org/package/function-bind +[npm-version-svg]: https://versionbadg.es/Raynos/function-bind.svg +[deps-svg]: https://david-dm.org/Raynos/function-bind.svg +[deps-url]: https://david-dm.org/Raynos/function-bind +[dev-deps-svg]: https://david-dm.org/Raynos/function-bind/dev-status.svg +[dev-deps-url]: https://david-dm.org/Raynos/function-bind#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/function-bind.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/function-bind.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/function-bind.svg +[downloads-url]: https://npm-stat.com/charts.html?package=function-bind +[codecov-image]: https://codecov.io/gh/Raynos/function-bind/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/Raynos/function-bind/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/Raynos/function-bind +[actions-url]: https://github.com/Raynos/function-bind/actions diff --git a/node_modules/function-bind/implementation.js b/node_modules/function-bind/implementation.js new file mode 100644 index 0000000..fd4384c --- /dev/null +++ b/node_modules/function-bind/implementation.js @@ -0,0 +1,84 @@ +'use strict'; + +/* eslint no-invalid-this: 1 */ + +var ERROR_MESSAGE = 'Function.prototype.bind called on incompatible '; +var toStr = Object.prototype.toString; +var max = Math.max; +var funcType = '[object Function]'; + +var concatty = function concatty(a, b) { + var arr = []; + + for (var i = 0; i < a.length; i += 1) { + arr[i] = a[i]; + } + for (var j = 0; j < b.length; j += 1) { + arr[j + a.length] = b[j]; + } + + return arr; +}; + +var slicy = function slicy(arrLike, offset) { + var arr = []; + for (var i = offset || 0, j = 0; i < arrLike.length; i += 1, j += 1) { + arr[j] = arrLike[i]; + } + return arr; +}; + +var joiny = function (arr, joiner) { + var str = ''; + for (var i = 0; i < arr.length; i += 1) { + str += arr[i]; + if (i + 1 < arr.length) { + str += joiner; + } + } + return str; +}; + +module.exports = function bind(that) { + var target = this; + if (typeof target !== 'function' || toStr.apply(target) !== funcType) { + throw new TypeError(ERROR_MESSAGE + target); + } + var args = slicy(arguments, 1); + + var bound; + var binder = function () { + if (this instanceof bound) { + var result = target.apply( + this, + concatty(args, arguments) + ); + if (Object(result) === result) { + return result; + } + return this; + } + return target.apply( + that, + concatty(args, arguments) + ); + + }; + + var boundLength = max(0, target.length - args.length); + var boundArgs = []; + for (var i = 0; i < boundLength; i++) { + boundArgs[i] = '$' + i; + } + + bound = Function('binder', 'return function (' + joiny(boundArgs, ',') + '){ return binder.apply(this,arguments); }')(binder); + + if (target.prototype) { + var Empty = function Empty() {}; + Empty.prototype = target.prototype; + bound.prototype = new Empty(); + Empty.prototype = null; + } + + return bound; +}; diff --git a/node_modules/function-bind/index.js b/node_modules/function-bind/index.js new file mode 100644 index 0000000..3bb6b96 --- /dev/null +++ b/node_modules/function-bind/index.js @@ -0,0 +1,5 @@ +'use strict'; + +var implementation = require('./implementation'); + +module.exports = Function.prototype.bind || implementation; diff --git a/node_modules/function-bind/package.json b/node_modules/function-bind/package.json new file mode 100644 index 0000000..6185963 --- /dev/null +++ b/node_modules/function-bind/package.json @@ -0,0 +1,87 @@ +{ + "name": "function-bind", + "version": "1.1.2", + "description": "Implementation of Function.prototype.bind", + "keywords": [ + "function", + "bind", + "shim", + "es5" + ], + "author": "Raynos ", + "repository": { + "type": "git", + "url": "https://github.com/Raynos/function-bind.git" + }, + "funding": { + "url": "https://github.com/sponsors/ljharb" + }, + "main": "index", + "homepage": "https://github.com/Raynos/function-bind", + "contributors": [ + { + "name": "Raynos" + }, + { + "name": "Jordan Harband", + "url": "https://github.com/ljharb" + } + ], + "bugs": { + "url": "https://github.com/Raynos/function-bind/issues", + "email": "raynos2@gmail.com" + }, + "devDependencies": { + "@ljharb/eslint-config": "^21.1.0", + "aud": "^2.0.3", + "auto-changelog": "^2.4.0", + "eslint": "=8.8.0", + "in-publish": "^2.0.1", + "npmignore": "^0.3.0", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.7.1" + }, + "license": "MIT", + "scripts": { + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepack": "npmignore --auto --commentLines=autogenerated", + "pretest": "npm run lint", + "test": "npm run tests-only", + "posttest": "aud --production", + "tests-only": "nyc tape 'test/**/*.js'", + "lint": "eslint --ext=js,mjs .", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "testling": { + "files": "test/index.js", + "browsers": [ + "ie/8..latest", + "firefox/16..latest", + "firefox/nightly", + "chrome/22..latest", + "chrome/canary", + "opera/12..latest", + "opera/next", + "safari/5.1..latest", + "ipad/6.0..latest", + "iphone/6.0..latest", + "android-browser/4.2..latest" + ] + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + } +} diff --git a/node_modules/function-bind/test/.eslintrc b/node_modules/function-bind/test/.eslintrc new file mode 100644 index 0000000..8a56d5b --- /dev/null +++ b/node_modules/function-bind/test/.eslintrc @@ -0,0 +1,9 @@ +{ + "rules": { + "array-bracket-newline": 0, + "array-element-newline": 0, + "max-statements-per-line": [2, { "max": 2 }], + "no-invalid-this": 0, + "no-magic-numbers": 0, + } +} diff --git a/node_modules/function-bind/test/index.js b/node_modules/function-bind/test/index.js new file mode 100644 index 0000000..2edecce --- /dev/null +++ b/node_modules/function-bind/test/index.js @@ -0,0 +1,252 @@ +// jscs:disable requireUseStrict + +var test = require('tape'); + +var functionBind = require('../implementation'); +var getCurrentContext = function () { return this; }; + +test('functionBind is a function', function (t) { + t.equal(typeof functionBind, 'function'); + t.end(); +}); + +test('non-functions', function (t) { + var nonFunctions = [true, false, [], {}, 42, 'foo', NaN, /a/g]; + t.plan(nonFunctions.length); + for (var i = 0; i < nonFunctions.length; ++i) { + try { functionBind.call(nonFunctions[i]); } catch (ex) { + t.ok(ex instanceof TypeError, 'throws when given ' + String(nonFunctions[i])); + } + } + t.end(); +}); + +test('without a context', function (t) { + t.test('binds properly', function (st) { + var args, context; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + context = this; + }) + }; + namespace.func(1, 2, 3); + st.deepEqual(args, [1, 2, 3]); + st.equal(context, getCurrentContext.call()); + st.end(); + }); + + t.test('binds properly, and still supplies bound arguments', function (st) { + var args, context; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + context = this; + }, undefined, 1, 2, 3) + }; + namespace.func(4, 5, 6); + st.deepEqual(args, [1, 2, 3, 4, 5, 6]); + st.equal(context, getCurrentContext.call()); + st.end(); + }); + + t.test('returns properly', function (st) { + var args; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + return this; + }, null) + }; + var context = namespace.func(1, 2, 3); + st.equal(context, getCurrentContext.call(), 'returned context is namespaced context'); + st.deepEqual(args, [1, 2, 3], 'passed arguments are correct'); + st.end(); + }); + + t.test('returns properly with bound arguments', function (st) { + var args; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + return this; + }, null, 1, 2, 3) + }; + var context = namespace.func(4, 5, 6); + st.equal(context, getCurrentContext.call(), 'returned context is namespaced context'); + st.deepEqual(args, [1, 2, 3, 4, 5, 6], 'passed arguments are correct'); + st.end(); + }); + + t.test('called as a constructor', function (st) { + var thunkify = function (value) { + return function () { return value; }; + }; + st.test('returns object value', function (sst) { + var expectedReturnValue = [1, 2, 3]; + var Constructor = functionBind.call(thunkify(expectedReturnValue), null); + var result = new Constructor(); + sst.equal(result, expectedReturnValue); + sst.end(); + }); + + st.test('does not return primitive value', function (sst) { + var Constructor = functionBind.call(thunkify(42), null); + var result = new Constructor(); + sst.notEqual(result, 42); + sst.end(); + }); + + st.test('object from bound constructor is instance of original and bound constructor', function (sst) { + var A = function (x) { + this.name = x || 'A'; + }; + var B = functionBind.call(A, null, 'B'); + + var result = new B(); + sst.ok(result instanceof B, 'result is instance of bound constructor'); + sst.ok(result instanceof A, 'result is instance of original constructor'); + sst.end(); + }); + + st.end(); + }); + + t.end(); +}); + +test('with a context', function (t) { + t.test('with no bound arguments', function (st) { + var args, context; + var boundContext = {}; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + context = this; + }, boundContext) + }; + namespace.func(1, 2, 3); + st.equal(context, boundContext, 'binds a context properly'); + st.deepEqual(args, [1, 2, 3], 'supplies passed arguments'); + st.end(); + }); + + t.test('with bound arguments', function (st) { + var args, context; + var boundContext = {}; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + context = this; + }, boundContext, 1, 2, 3) + }; + namespace.func(4, 5, 6); + st.equal(context, boundContext, 'binds a context properly'); + st.deepEqual(args, [1, 2, 3, 4, 5, 6], 'supplies bound and passed arguments'); + st.end(); + }); + + t.test('returns properly', function (st) { + var boundContext = {}; + var args; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + return this; + }, boundContext) + }; + var context = namespace.func(1, 2, 3); + st.equal(context, boundContext, 'returned context is bound context'); + st.notEqual(context, getCurrentContext.call(), 'returned context is not lexical context'); + st.deepEqual(args, [1, 2, 3], 'passed arguments are correct'); + st.end(); + }); + + t.test('returns properly with bound arguments', function (st) { + var boundContext = {}; + var args; + var namespace = { + func: functionBind.call(function () { + args = Array.prototype.slice.call(arguments); + return this; + }, boundContext, 1, 2, 3) + }; + var context = namespace.func(4, 5, 6); + st.equal(context, boundContext, 'returned context is bound context'); + st.notEqual(context, getCurrentContext.call(), 'returned context is not lexical context'); + st.deepEqual(args, [1, 2, 3, 4, 5, 6], 'passed arguments are correct'); + st.end(); + }); + + t.test('passes the correct arguments when called as a constructor', function (st) { + var expected = { name: 'Correct' }; + var namespace = { + Func: functionBind.call(function (arg) { + return arg; + }, { name: 'Incorrect' }) + }; + var returned = new namespace.Func(expected); + st.equal(returned, expected, 'returns the right arg when called as a constructor'); + st.end(); + }); + + t.test('has the new instance\'s context when called as a constructor', function (st) { + var actualContext; + var expectedContext = { foo: 'bar' }; + var namespace = { + Func: functionBind.call(function () { + actualContext = this; + }, expectedContext) + }; + var result = new namespace.Func(); + st.equal(result instanceof namespace.Func, true); + st.notEqual(actualContext, expectedContext); + st.end(); + }); + + t.end(); +}); + +test('bound function length', function (t) { + t.test('sets a correct length without thisArg', function (st) { + var subject = functionBind.call(function (a, b, c) { return a + b + c; }); + st.equal(subject.length, 3); + st.equal(subject(1, 2, 3), 6); + st.end(); + }); + + t.test('sets a correct length with thisArg', function (st) { + var subject = functionBind.call(function (a, b, c) { return a + b + c; }, {}); + st.equal(subject.length, 3); + st.equal(subject(1, 2, 3), 6); + st.end(); + }); + + t.test('sets a correct length without thisArg and first argument', function (st) { + var subject = functionBind.call(function (a, b, c) { return a + b + c; }, undefined, 1); + st.equal(subject.length, 2); + st.equal(subject(2, 3), 6); + st.end(); + }); + + t.test('sets a correct length with thisArg and first argument', function (st) { + var subject = functionBind.call(function (a, b, c) { return a + b + c; }, {}, 1); + st.equal(subject.length, 2); + st.equal(subject(2, 3), 6); + st.end(); + }); + + t.test('sets a correct length without thisArg and too many arguments', function (st) { + var subject = functionBind.call(function (a, b, c) { return a + b + c; }, undefined, 1, 2, 3, 4); + st.equal(subject.length, 0); + st.equal(subject(), 6); + st.end(); + }); + + t.test('sets a correct length with thisArg and too many arguments', function (st) { + var subject = functionBind.call(function (a, b, c) { return a + b + c; }, {}, 1, 2, 3, 4); + st.equal(subject.length, 0); + st.equal(subject(), 6); + st.end(); + }); +}); diff --git a/node_modules/get-intrinsic/.eslintrc b/node_modules/get-intrinsic/.eslintrc new file mode 100644 index 0000000..235fb79 --- /dev/null +++ b/node_modules/get-intrinsic/.eslintrc @@ -0,0 +1,42 @@ +{ + "root": true, + + "extends": "@ljharb", + + "env": { + "es6": true, + "es2017": true, + "es2020": true, + "es2021": true, + "es2022": true, + }, + + "globals": { + "Float16Array": false, + }, + + "rules": { + "array-bracket-newline": 0, + "complexity": 0, + "eqeqeq": [2, "allow-null"], + "func-name-matching": 0, + "id-length": 0, + "max-lines": 0, + "max-lines-per-function": [2, 90], + "max-params": [2, 4], + "max-statements": 0, + "max-statements-per-line": [2, { "max": 2 }], + "multiline-comment-style": 0, + "no-magic-numbers": 0, + "sort-keys": 0, + }, + + "overrides": [ + { + "files": "test/**", + "rules": { + "new-cap": 0, + }, + }, + ], +} diff --git a/node_modules/get-intrinsic/.github/FUNDING.yml b/node_modules/get-intrinsic/.github/FUNDING.yml new file mode 100644 index 0000000..8e8da0d --- /dev/null +++ b/node_modules/get-intrinsic/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/get-intrinsic +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/get-intrinsic/.nycrc b/node_modules/get-intrinsic/.nycrc new file mode 100644 index 0000000..bdd626c --- /dev/null +++ b/node_modules/get-intrinsic/.nycrc @@ -0,0 +1,9 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/get-intrinsic/CHANGELOG.md b/node_modules/get-intrinsic/CHANGELOG.md new file mode 100644 index 0000000..ce1dd98 --- /dev/null +++ b/node_modules/get-intrinsic/CHANGELOG.md @@ -0,0 +1,186 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.3.0](https://github.com/ljharb/get-intrinsic/compare/v1.2.7...v1.3.0) - 2025-02-22 + +### Commits + +- [Dev Deps] update `es-abstract`, `es-value-fixtures`, `for-each`, `object-inspect` [`9b61553`](https://github.com/ljharb/get-intrinsic/commit/9b61553c587f1c1edbd435597e88c7d387da97dd) +- [Deps] update `call-bind-apply-helpers`, `es-object-atoms`, `get-proto` [`a341fee`](https://github.com/ljharb/get-intrinsic/commit/a341fee0f39a403b0f0069e82c97642d5eb11043) +- [New] add `Float16Array` [`de22116`](https://github.com/ljharb/get-intrinsic/commit/de22116b492fb989a0341bceb6e573abfaed73dc) + +## [v1.2.7](https://github.com/ljharb/get-intrinsic/compare/v1.2.6...v1.2.7) - 2025-01-02 + +### Commits + +- [Refactor] use `get-proto` directly [`00ab955`](https://github.com/ljharb/get-intrinsic/commit/00ab95546a0980c8ad42a84253daaa8d2adcedf9) +- [Deps] update `math-intrinsics` [`c716cdd`](https://github.com/ljharb/get-intrinsic/commit/c716cdd6bbe36b438057025561b8bb5a879ac8a0) +- [Dev Deps] update `call-bound`, `es-abstract` [`dc648a6`](https://github.com/ljharb/get-intrinsic/commit/dc648a67eb359037dff8d8619bfa71d86debccb1) + +## [v1.2.6](https://github.com/ljharb/get-intrinsic/compare/v1.2.5...v1.2.6) - 2024-12-11 + +### Commits + +- [Refactor] use `math-intrinsics` [`841be86`](https://github.com/ljharb/get-intrinsic/commit/841be8641a9254c4c75483b30c8871b5d5065926) +- [Refactor] use `es-object-atoms` [`42057df`](https://github.com/ljharb/get-intrinsic/commit/42057dfa16f66f64787e66482af381cc6f31d2c1) +- [Deps] update `call-bind-apply-helpers` [`45afa24`](https://github.com/ljharb/get-intrinsic/commit/45afa24a9ee4d6d3c172db1f555b16cb27843ef4) +- [Dev Deps] update `call-bound` [`9cba9c6`](https://github.com/ljharb/get-intrinsic/commit/9cba9c6e70212bc163b7a5529cb25df46071646f) + +## [v1.2.5](https://github.com/ljharb/get-intrinsic/compare/v1.2.4...v1.2.5) - 2024-12-06 + +### Commits + +- [actions] split out node 10-20, and 20+ [`6e2b9dd`](https://github.com/ljharb/get-intrinsic/commit/6e2b9dd23902665681ebe453256ccfe21d7966f0) +- [Refactor] use `dunder-proto` and `call-bind-apply-helpers` instead of `has-proto` [`c095d17`](https://github.com/ljharb/get-intrinsic/commit/c095d179ad0f4fbfff20c8a3e0cb4fe668018998) +- [Refactor] use `gopd` [`9841d5b`](https://github.com/ljharb/get-intrinsic/commit/9841d5b35f7ab4fd2d193f0c741a50a077920e90) +- [Dev Deps] update `@ljharb/eslint-config`, `auto-changelog`, `es-abstract`, `es-value-fixtures`, `gopd`, `mock-property`, `object-inspect`, `tape` [`2d07e01`](https://github.com/ljharb/get-intrinsic/commit/2d07e01310cee2cbaedfead6903df128b1f5d425) +- [Deps] update `gopd`, `has-proto`, `has-symbols`, `hasown` [`974d8bf`](https://github.com/ljharb/get-intrinsic/commit/974d8bf5baad7939eef35c25cc1dd88c10a30fa6) +- [Dev Deps] update `call-bind`, `es-abstract`, `tape` [`df9dde1`](https://github.com/ljharb/get-intrinsic/commit/df9dde178186631ab8a3165ede056549918ce4bc) +- [Refactor] cache `es-define-property` as well [`43ef543`](https://github.com/ljharb/get-intrinsic/commit/43ef543cb02194401420e3a914a4ca9168691926) +- [Deps] update `has-proto`, `has-symbols`, `hasown` [`ad4949d`](https://github.com/ljharb/get-intrinsic/commit/ad4949d5467316505aad89bf75f9417ed782f7af) +- [Tests] use `call-bound` directly [`ad5c406`](https://github.com/ljharb/get-intrinsic/commit/ad5c4069774bfe90e520a35eead5fe5ca9d69e80) +- [Deps] update `has-proto`, `hasown` [`45414ca`](https://github.com/ljharb/get-intrinsic/commit/45414caa312333a2798953682c68f85c550627dd) +- [Tests] replace `aud` with `npm audit` [`18d3509`](https://github.com/ljharb/get-intrinsic/commit/18d3509f79460e7924da70409ee81e5053087523) +- [Deps] update `es-define-property` [`aadaa3b`](https://github.com/ljharb/get-intrinsic/commit/aadaa3b2188d77ad9bff394ce5d4249c49eb21f5) +- [Dev Deps] add missing peer dep [`c296a16`](https://github.com/ljharb/get-intrinsic/commit/c296a16246d0c9a5981944f4cc5cf61fbda0cf6a) + +## [v1.2.4](https://github.com/ljharb/get-intrinsic/compare/v1.2.3...v1.2.4) - 2024-02-05 + +### Commits + +- [Refactor] use all 7 <+ ES6 Errors from `es-errors` [`bcac811`](https://github.com/ljharb/get-intrinsic/commit/bcac811abdc1c982e12abf848a410d6aae148d14) + +## [v1.2.3](https://github.com/ljharb/get-intrinsic/compare/v1.2.2...v1.2.3) - 2024-02-03 + +### Commits + +- [Refactor] use `es-errors`, so things that only need those do not need `get-intrinsic` [`f11db9c`](https://github.com/ljharb/get-intrinsic/commit/f11db9c4fb97d87bbd53d3c73ac6b3db3613ad3b) +- [Dev Deps] update `aud`, `es-abstract`, `mock-property`, `npmignore` [`b7ac7d1`](https://github.com/ljharb/get-intrinsic/commit/b7ac7d1616fefb03877b1aed0c8f8d61aad32b6c) +- [meta] simplify `exports` [`faa0cc6`](https://github.com/ljharb/get-intrinsic/commit/faa0cc618e2830ffb51a8202490b0c215d965cbc) +- [meta] add missing `engines.node` [`774dd0b`](https://github.com/ljharb/get-intrinsic/commit/774dd0b3e8f741c3f05a6322d124d6087f146af1) +- [Dev Deps] update `tape` [`5828e8e`](https://github.com/ljharb/get-intrinsic/commit/5828e8e4a04e69312e87a36c0ea39428a7a4c3d8) +- [Robustness] use null objects for lookups [`eb9a11f`](https://github.com/ljharb/get-intrinsic/commit/eb9a11fa9eb3e13b193fcc05a7fb814341b1a7b7) +- [meta] add `sideEffects` flag [`89bcc7a`](https://github.com/ljharb/get-intrinsic/commit/89bcc7a42e19bf07b7c21e3094d5ab177109e6d2) + +## [v1.2.2](https://github.com/ljharb/get-intrinsic/compare/v1.2.1...v1.2.2) - 2023-10-20 + +### Commits + +- [Dev Deps] update `@ljharb/eslint-config`, `aud`, `call-bind`, `es-abstract`, `mock-property`, `object-inspect`, `tape` [`f51bcf2`](https://github.com/ljharb/get-intrinsic/commit/f51bcf26412d58d17ce17c91c9afd0ad271f0762) +- [Refactor] use `hasown` instead of `has` [`18d14b7`](https://github.com/ljharb/get-intrinsic/commit/18d14b799bea6b5765e1cec91890830cbcdb0587) +- [Deps] update `function-bind` [`6e109c8`](https://github.com/ljharb/get-intrinsic/commit/6e109c81e03804cc5e7824fb64353cdc3d8ee2c7) + +## [v1.2.1](https://github.com/ljharb/get-intrinsic/compare/v1.2.0...v1.2.1) - 2023-05-13 + +### Commits + +- [Fix] avoid a crash in envs without `__proto__` [`7bad8d0`](https://github.com/ljharb/get-intrinsic/commit/7bad8d061bf8721733b58b73a2565af2b6756b64) +- [Dev Deps] update `es-abstract` [`c60e6b7`](https://github.com/ljharb/get-intrinsic/commit/c60e6b7b4cf9660c7f27ed970970fd55fac48dc5) + +## [v1.2.0](https://github.com/ljharb/get-intrinsic/compare/v1.1.3...v1.2.0) - 2023-01-19 + +### Commits + +- [actions] update checkout action [`ca6b12f`](https://github.com/ljharb/get-intrinsic/commit/ca6b12f31eaacea4ea3b055e744cd61623385ffb) +- [Dev Deps] update `@ljharb/eslint-config`, `es-abstract`, `object-inspect`, `tape` [`41a3727`](https://github.com/ljharb/get-intrinsic/commit/41a3727d0026fa04273ae216a5f8e12eefd72da8) +- [Fix] ensure `Error.prototype` is undeniable [`c511e97`](https://github.com/ljharb/get-intrinsic/commit/c511e97ae99c764c4524b540dee7a70757af8da3) +- [Dev Deps] update `aud`, `es-abstract`, `tape` [`1bef8a8`](https://github.com/ljharb/get-intrinsic/commit/1bef8a8fd439ebb80863199b6189199e0851ac67) +- [Dev Deps] update `aud`, `es-abstract` [`0d41f16`](https://github.com/ljharb/get-intrinsic/commit/0d41f16bcd500bc28b7bfc98043ebf61ea081c26) +- [New] add `BigInt64Array` and `BigUint64Array` [`a6cca25`](https://github.com/ljharb/get-intrinsic/commit/a6cca25f29635889b7e9bd669baf9e04be90e48c) +- [Tests] use `gopd` [`ecf7722`](https://github.com/ljharb/get-intrinsic/commit/ecf7722240d15cfd16edda06acf63359c10fb9bd) + +## [v1.1.3](https://github.com/ljharb/get-intrinsic/compare/v1.1.2...v1.1.3) - 2022-09-12 + +### Commits + +- [Dev Deps] update `es-abstract`, `es-value-fixtures`, `tape` [`07ff291`](https://github.com/ljharb/get-intrinsic/commit/07ff291816406ebe5a12d7f16965bde0942dd688) +- [Fix] properly check for % signs [`50ac176`](https://github.com/ljharb/get-intrinsic/commit/50ac1760fe99c227e64eabde76e9c0e44cd881b5) + +## [v1.1.2](https://github.com/ljharb/get-intrinsic/compare/v1.1.1...v1.1.2) - 2022-06-08 + +### Fixed + +- [Fix] properly validate against extra % signs [`#16`](https://github.com/ljharb/get-intrinsic/issues/16) + +### Commits + +- [actions] reuse common workflows [`0972547`](https://github.com/ljharb/get-intrinsic/commit/0972547efd0abc863fe4c445a6ca7eb4f8c6901d) +- [meta] use `npmignore` to autogenerate an npmignore file [`5ba0b51`](https://github.com/ljharb/get-intrinsic/commit/5ba0b51d8d8d4f1c31d426d74abc0770fd106bad) +- [actions] use `node/install` instead of `node/run`; use `codecov` action [`c364492`](https://github.com/ljharb/get-intrinsic/commit/c364492af4af51333e6f81c0bf21fd3d602c3661) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `es-abstract`, `object-inspect`, `tape` [`dc04dad`](https://github.com/ljharb/get-intrinsic/commit/dc04dad86f6e5608775a2640cb0db5927ae29ed9) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `es-abstract`, `object-inspect`, `safe-publish-latest`, `tape` [`1c14059`](https://github.com/ljharb/get-intrinsic/commit/1c1405984e86dd2dc9366c15d8a0294a96a146a5) +- [Tests] use `mock-property` [`b396ef0`](https://github.com/ljharb/get-intrinsic/commit/b396ef05bb73b1d699811abd64b0d9b97997fdda) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `object-inspect`, `tape` [`c2c758d`](https://github.com/ljharb/get-intrinsic/commit/c2c758d3b90af4fef0a76910d8d3c292ec8d1d3e) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `es-abstract`, `es-value-fixtures`, `object-inspect`, `tape` [`29e3c09`](https://github.com/ljharb/get-intrinsic/commit/29e3c091c2bf3e17099969847e8729d0e46896de) +- [actions] update codecov uploader [`8cbc141`](https://github.com/ljharb/get-intrinsic/commit/8cbc1418940d7a8941f3a7985cbc4ac095c5e13d) +- [Dev Deps] update `@ljharb/eslint-config`, `es-abstract`, `es-value-fixtures`, `object-inspect`, `tape` [`10b6f5c`](https://github.com/ljharb/get-intrinsic/commit/10b6f5c02593fb3680c581d696ac124e30652932) +- [readme] add github actions/codecov badges [`4e25400`](https://github.com/ljharb/get-intrinsic/commit/4e25400d9f51ae9eb059cbe22d9144e70ea214e8) +- [Tests] use `for-each` instead of `foreach` [`c05b957`](https://github.com/ljharb/get-intrinsic/commit/c05b957ad9a7bc7721af7cc9e9be1edbfe057496) +- [Dev Deps] update `es-abstract` [`29b05ae`](https://github.com/ljharb/get-intrinsic/commit/29b05aec3e7330e9ad0b8e0f685a9112c20cdd97) +- [meta] use `prepublishOnly` script for npm 7+ [`95c285d`](https://github.com/ljharb/get-intrinsic/commit/95c285da810516057d3bbfa871176031af38f05d) +- [Deps] update `has-symbols` [`593cb4f`](https://github.com/ljharb/get-intrinsic/commit/593cb4fb38e7922e40e42c183f45274b636424cd) +- [readme] fix repo URLs [`1c8305b`](https://github.com/ljharb/get-intrinsic/commit/1c8305b5365827c9b6fc785434aac0e1328ff2f5) +- [Deps] update `has-symbols` [`c7138b6`](https://github.com/ljharb/get-intrinsic/commit/c7138b6c6d73132d859471fb8c13304e1e7c8b20) +- [Dev Deps] remove unused `has-bigints` [`bd63aff`](https://github.com/ljharb/get-intrinsic/commit/bd63aff6ad8f3a986c557fcda2914187bdaab359) + +## [v1.1.1](https://github.com/ljharb/get-intrinsic/compare/v1.1.0...v1.1.1) - 2021-02-03 + +### Fixed + +- [meta] export `./package.json` [`#9`](https://github.com/ljharb/get-intrinsic/issues/9) + +### Commits + +- [readme] flesh out the readme; use `evalmd` [`d12f12c`](https://github.com/ljharb/get-intrinsic/commit/d12f12c15345a0a0772cc65a7c64369529abd614) +- [eslint] set up proper globals config [`5a8c098`](https://github.com/ljharb/get-intrinsic/commit/5a8c0984e3319d1ac0e64b102f8ec18b64e79f36) +- [Dev Deps] update `eslint` [`7b9a5c0`](https://github.com/ljharb/get-intrinsic/commit/7b9a5c0d31a90ca1a1234181c74988fb046701cd) + +## [v1.1.0](https://github.com/ljharb/get-intrinsic/compare/v1.0.2...v1.1.0) - 2021-01-25 + +### Fixed + +- [Refactor] delay `Function` eval until syntax-derived values are requested [`#3`](https://github.com/ljharb/get-intrinsic/issues/3) + +### Commits + +- [Tests] migrate tests to Github Actions [`2ab762b`](https://github.com/ljharb/get-intrinsic/commit/2ab762b48164aea8af37a40ba105bbc8246ab8c4) +- [meta] do not publish github action workflow files [`5e7108e`](https://github.com/ljharb/get-intrinsic/commit/5e7108e4768b244d48d9567ba4f8a6cab9c65b8e) +- [Tests] add some coverage [`01ac7a8`](https://github.com/ljharb/get-intrinsic/commit/01ac7a87ac29738567e8524cd8c9e026b1fa8cb3) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `call-bind`, `es-abstract`, `tape`; add `call-bind` [`911b672`](https://github.com/ljharb/get-intrinsic/commit/911b672fbffae433a96924c6ce013585e425f4b7) +- [Refactor] rearrange evalled constructors a bit [`7e7e4bf`](https://github.com/ljharb/get-intrinsic/commit/7e7e4bf583f3799c8ac1c6c5e10d2cb553957347) +- [meta] add Automatic Rebase and Require Allow Edits workflows [`0199968`](https://github.com/ljharb/get-intrinsic/commit/01999687a263ffce0a3cb011dfbcb761754aedbc) + +## [v1.0.2](https://github.com/ljharb/get-intrinsic/compare/v1.0.1...v1.0.2) - 2020-12-17 + +### Commits + +- [Fix] Throw for non‑existent intrinsics [`68f873b`](https://github.com/ljharb/get-intrinsic/commit/68f873b013c732a05ad6f5fc54f697e55515461b) +- [Fix] Throw for non‑existent segments in the intrinsic path [`8325dee`](https://github.com/ljharb/get-intrinsic/commit/8325deee43128f3654d3399aa9591741ebe17b21) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `has-bigints`, `object-inspect` [`0c227a7`](https://github.com/ljharb/get-intrinsic/commit/0c227a7d8b629166f25715fd242553892e458525) +- [meta] do not lint coverage output [`70d2419`](https://github.com/ljharb/get-intrinsic/commit/70d24199b620043cd9110fc5f426d214ebe21dc9) + +## [v1.0.1](https://github.com/ljharb/get-intrinsic/compare/v1.0.0...v1.0.1) - 2020-10-30 + +### Commits + +- [Tests] gather coverage data on every job [`d1d280d`](https://github.com/ljharb/get-intrinsic/commit/d1d280dec714e3f0519cc877dbcb193057d9cac6) +- [Fix] add missing dependencies [`5031771`](https://github.com/ljharb/get-intrinsic/commit/5031771bb1095b38be88ce7c41d5de88718e432e) +- [Tests] use `es-value-fixtures` [`af48765`](https://github.com/ljharb/get-intrinsic/commit/af48765a23c5323fb0b6b38dbf00eb5099c7bebc) + +## v1.0.0 - 2020-10-29 + +### Commits + +- Implementation [`bbce57c`](https://github.com/ljharb/get-intrinsic/commit/bbce57c6f33d05b2d8d3efa273ceeb3ee01127bb) +- Tests [`17b4f0d`](https://github.com/ljharb/get-intrinsic/commit/17b4f0d56dea6b4059b56fc30ef3ee4d9500ebc2) +- Initial commit [`3153294`](https://github.com/ljharb/get-intrinsic/commit/31532948de363b0a27dd9fd4649e7b7028ec4b44) +- npm init [`fb326c4`](https://github.com/ljharb/get-intrinsic/commit/fb326c4d2817c8419ec31de1295f06bb268a7902) +- [meta] add Automatic Rebase and Require Allow Edits workflows [`48862fb`](https://github.com/ljharb/get-intrinsic/commit/48862fb2508c8f6a57968e6d08b7c883afc9d550) +- [meta] add `auto-changelog` [`5f28ad0`](https://github.com/ljharb/get-intrinsic/commit/5f28ad019e060a353d8028f9f2591a9cc93074a1) +- [meta] add "funding"; create `FUNDING.yml` [`c2bbdde`](https://github.com/ljharb/get-intrinsic/commit/c2bbddeba73a875be61484ee4680b129a6d4e0a1) +- [Tests] add `npm run lint` [`0a84b98`](https://github.com/ljharb/get-intrinsic/commit/0a84b98b22b7cf7a748666f705b0003a493c35fd) +- Only apps should have lockfiles [`9586c75`](https://github.com/ljharb/get-intrinsic/commit/9586c75866c1ee678e4d5d4dbbdef6997e511b05) diff --git a/node_modules/get-intrinsic/LICENSE b/node_modules/get-intrinsic/LICENSE new file mode 100644 index 0000000..48f05d0 --- /dev/null +++ b/node_modules/get-intrinsic/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2020 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/get-intrinsic/README.md b/node_modules/get-intrinsic/README.md new file mode 100644 index 0000000..3aa0bba --- /dev/null +++ b/node_modules/get-intrinsic/README.md @@ -0,0 +1,71 @@ +# get-intrinsic [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![dependency status][deps-svg]][deps-url] +[![dev dependency status][dev-deps-svg]][dev-deps-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +Get and robustly cache all JS language-level intrinsics at first require time. + +See the syntax described [in the JS spec](https://tc39.es/ecma262/#sec-well-known-intrinsic-objects) for reference. + +## Example + +```js +var GetIntrinsic = require('get-intrinsic'); +var assert = require('assert'); + +// static methods +assert.equal(GetIntrinsic('%Math.pow%'), Math.pow); +assert.equal(Math.pow(2, 3), 8); +assert.equal(GetIntrinsic('%Math.pow%')(2, 3), 8); +delete Math.pow; +assert.equal(GetIntrinsic('%Math.pow%')(2, 3), 8); + +// instance methods +var arr = [1]; +assert.equal(GetIntrinsic('%Array.prototype.push%'), Array.prototype.push); +assert.deepEqual(arr, [1]); + +arr.push(2); +assert.deepEqual(arr, [1, 2]); + +GetIntrinsic('%Array.prototype.push%').call(arr, 3); +assert.deepEqual(arr, [1, 2, 3]); + +delete Array.prototype.push; +GetIntrinsic('%Array.prototype.push%').call(arr, 4); +assert.deepEqual(arr, [1, 2, 3, 4]); + +// missing features +delete JSON.parse; // to simulate a real intrinsic that is missing in the environment +assert.throws(() => GetIntrinsic('%JSON.parse%')); +assert.equal(undefined, GetIntrinsic('%JSON.parse%', true)); +``` + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +## Security + +Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report. + +[package-url]: https://npmjs.org/package/get-intrinsic +[npm-version-svg]: https://versionbadg.es/ljharb/get-intrinsic.svg +[deps-svg]: https://david-dm.org/ljharb/get-intrinsic.svg +[deps-url]: https://david-dm.org/ljharb/get-intrinsic +[dev-deps-svg]: https://david-dm.org/ljharb/get-intrinsic/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/get-intrinsic#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/get-intrinsic.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/get-intrinsic.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/get-intrinsic.svg +[downloads-url]: https://npm-stat.com/charts.html?package=get-intrinsic +[codecov-image]: https://codecov.io/gh/ljharb/get-intrinsic/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/get-intrinsic/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/get-intrinsic +[actions-url]: https://github.com/ljharb/get-intrinsic/actions diff --git a/node_modules/get-intrinsic/index.js b/node_modules/get-intrinsic/index.js new file mode 100644 index 0000000..bd1d94b --- /dev/null +++ b/node_modules/get-intrinsic/index.js @@ -0,0 +1,378 @@ +'use strict'; + +var undefined; + +var $Object = require('es-object-atoms'); + +var $Error = require('es-errors'); +var $EvalError = require('es-errors/eval'); +var $RangeError = require('es-errors/range'); +var $ReferenceError = require('es-errors/ref'); +var $SyntaxError = require('es-errors/syntax'); +var $TypeError = require('es-errors/type'); +var $URIError = require('es-errors/uri'); + +var abs = require('math-intrinsics/abs'); +var floor = require('math-intrinsics/floor'); +var max = require('math-intrinsics/max'); +var min = require('math-intrinsics/min'); +var pow = require('math-intrinsics/pow'); +var round = require('math-intrinsics/round'); +var sign = require('math-intrinsics/sign'); + +var $Function = Function; + +// eslint-disable-next-line consistent-return +var getEvalledConstructor = function (expressionSyntax) { + try { + return $Function('"use strict"; return (' + expressionSyntax + ').constructor;')(); + } catch (e) {} +}; + +var $gOPD = require('gopd'); +var $defineProperty = require('es-define-property'); + +var throwTypeError = function () { + throw new $TypeError(); +}; +var ThrowTypeError = $gOPD + ? (function () { + try { + // eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties + arguments.callee; // IE 8 does not throw here + return throwTypeError; + } catch (calleeThrows) { + try { + // IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '') + return $gOPD(arguments, 'callee').get; + } catch (gOPDthrows) { + return throwTypeError; + } + } + }()) + : throwTypeError; + +var hasSymbols = require('has-symbols')(); + +var getProto = require('get-proto'); +var $ObjectGPO = require('get-proto/Object.getPrototypeOf'); +var $ReflectGPO = require('get-proto/Reflect.getPrototypeOf'); + +var $apply = require('call-bind-apply-helpers/functionApply'); +var $call = require('call-bind-apply-helpers/functionCall'); + +var needsEval = {}; + +var TypedArray = typeof Uint8Array === 'undefined' || !getProto ? undefined : getProto(Uint8Array); + +var INTRINSICS = { + __proto__: null, + '%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError, + '%Array%': Array, + '%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer, + '%ArrayIteratorPrototype%': hasSymbols && getProto ? getProto([][Symbol.iterator]()) : undefined, + '%AsyncFromSyncIteratorPrototype%': undefined, + '%AsyncFunction%': needsEval, + '%AsyncGenerator%': needsEval, + '%AsyncGeneratorFunction%': needsEval, + '%AsyncIteratorPrototype%': needsEval, + '%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics, + '%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt, + '%BigInt64Array%': typeof BigInt64Array === 'undefined' ? undefined : BigInt64Array, + '%BigUint64Array%': typeof BigUint64Array === 'undefined' ? undefined : BigUint64Array, + '%Boolean%': Boolean, + '%DataView%': typeof DataView === 'undefined' ? undefined : DataView, + '%Date%': Date, + '%decodeURI%': decodeURI, + '%decodeURIComponent%': decodeURIComponent, + '%encodeURI%': encodeURI, + '%encodeURIComponent%': encodeURIComponent, + '%Error%': $Error, + '%eval%': eval, // eslint-disable-line no-eval + '%EvalError%': $EvalError, + '%Float16Array%': typeof Float16Array === 'undefined' ? undefined : Float16Array, + '%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array, + '%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array, + '%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry, + '%Function%': $Function, + '%GeneratorFunction%': needsEval, + '%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array, + '%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array, + '%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array, + '%isFinite%': isFinite, + '%isNaN%': isNaN, + '%IteratorPrototype%': hasSymbols && getProto ? getProto(getProto([][Symbol.iterator]())) : undefined, + '%JSON%': typeof JSON === 'object' ? JSON : undefined, + '%Map%': typeof Map === 'undefined' ? undefined : Map, + '%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols || !getProto ? undefined : getProto(new Map()[Symbol.iterator]()), + '%Math%': Math, + '%Number%': Number, + '%Object%': $Object, + '%Object.getOwnPropertyDescriptor%': $gOPD, + '%parseFloat%': parseFloat, + '%parseInt%': parseInt, + '%Promise%': typeof Promise === 'undefined' ? undefined : Promise, + '%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy, + '%RangeError%': $RangeError, + '%ReferenceError%': $ReferenceError, + '%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect, + '%RegExp%': RegExp, + '%Set%': typeof Set === 'undefined' ? undefined : Set, + '%SetIteratorPrototype%': typeof Set === 'undefined' || !hasSymbols || !getProto ? undefined : getProto(new Set()[Symbol.iterator]()), + '%SharedArrayBuffer%': typeof SharedArrayBuffer === 'undefined' ? undefined : SharedArrayBuffer, + '%String%': String, + '%StringIteratorPrototype%': hasSymbols && getProto ? getProto(''[Symbol.iterator]()) : undefined, + '%Symbol%': hasSymbols ? Symbol : undefined, + '%SyntaxError%': $SyntaxError, + '%ThrowTypeError%': ThrowTypeError, + '%TypedArray%': TypedArray, + '%TypeError%': $TypeError, + '%Uint8Array%': typeof Uint8Array === 'undefined' ? undefined : Uint8Array, + '%Uint8ClampedArray%': typeof Uint8ClampedArray === 'undefined' ? undefined : Uint8ClampedArray, + '%Uint16Array%': typeof Uint16Array === 'undefined' ? undefined : Uint16Array, + '%Uint32Array%': typeof Uint32Array === 'undefined' ? undefined : Uint32Array, + '%URIError%': $URIError, + '%WeakMap%': typeof WeakMap === 'undefined' ? undefined : WeakMap, + '%WeakRef%': typeof WeakRef === 'undefined' ? undefined : WeakRef, + '%WeakSet%': typeof WeakSet === 'undefined' ? undefined : WeakSet, + + '%Function.prototype.call%': $call, + '%Function.prototype.apply%': $apply, + '%Object.defineProperty%': $defineProperty, + '%Object.getPrototypeOf%': $ObjectGPO, + '%Math.abs%': abs, + '%Math.floor%': floor, + '%Math.max%': max, + '%Math.min%': min, + '%Math.pow%': pow, + '%Math.round%': round, + '%Math.sign%': sign, + '%Reflect.getPrototypeOf%': $ReflectGPO +}; + +if (getProto) { + try { + null.error; // eslint-disable-line no-unused-expressions + } catch (e) { + // https://github.com/tc39/proposal-shadowrealm/pull/384#issuecomment-1364264229 + var errorProto = getProto(getProto(e)); + INTRINSICS['%Error.prototype%'] = errorProto; + } +} + +var doEval = function doEval(name) { + var value; + if (name === '%AsyncFunction%') { + value = getEvalledConstructor('async function () {}'); + } else if (name === '%GeneratorFunction%') { + value = getEvalledConstructor('function* () {}'); + } else if (name === '%AsyncGeneratorFunction%') { + value = getEvalledConstructor('async function* () {}'); + } else if (name === '%AsyncGenerator%') { + var fn = doEval('%AsyncGeneratorFunction%'); + if (fn) { + value = fn.prototype; + } + } else if (name === '%AsyncIteratorPrototype%') { + var gen = doEval('%AsyncGenerator%'); + if (gen && getProto) { + value = getProto(gen.prototype); + } + } + + INTRINSICS[name] = value; + + return value; +}; + +var LEGACY_ALIASES = { + __proto__: null, + '%ArrayBufferPrototype%': ['ArrayBuffer', 'prototype'], + '%ArrayPrototype%': ['Array', 'prototype'], + '%ArrayProto_entries%': ['Array', 'prototype', 'entries'], + '%ArrayProto_forEach%': ['Array', 'prototype', 'forEach'], + '%ArrayProto_keys%': ['Array', 'prototype', 'keys'], + '%ArrayProto_values%': ['Array', 'prototype', 'values'], + '%AsyncFunctionPrototype%': ['AsyncFunction', 'prototype'], + '%AsyncGenerator%': ['AsyncGeneratorFunction', 'prototype'], + '%AsyncGeneratorPrototype%': ['AsyncGeneratorFunction', 'prototype', 'prototype'], + '%BooleanPrototype%': ['Boolean', 'prototype'], + '%DataViewPrototype%': ['DataView', 'prototype'], + '%DatePrototype%': ['Date', 'prototype'], + '%ErrorPrototype%': ['Error', 'prototype'], + '%EvalErrorPrototype%': ['EvalError', 'prototype'], + '%Float32ArrayPrototype%': ['Float32Array', 'prototype'], + '%Float64ArrayPrototype%': ['Float64Array', 'prototype'], + '%FunctionPrototype%': ['Function', 'prototype'], + '%Generator%': ['GeneratorFunction', 'prototype'], + '%GeneratorPrototype%': ['GeneratorFunction', 'prototype', 'prototype'], + '%Int8ArrayPrototype%': ['Int8Array', 'prototype'], + '%Int16ArrayPrototype%': ['Int16Array', 'prototype'], + '%Int32ArrayPrototype%': ['Int32Array', 'prototype'], + '%JSONParse%': ['JSON', 'parse'], + '%JSONStringify%': ['JSON', 'stringify'], + '%MapPrototype%': ['Map', 'prototype'], + '%NumberPrototype%': ['Number', 'prototype'], + '%ObjectPrototype%': ['Object', 'prototype'], + '%ObjProto_toString%': ['Object', 'prototype', 'toString'], + '%ObjProto_valueOf%': ['Object', 'prototype', 'valueOf'], + '%PromisePrototype%': ['Promise', 'prototype'], + '%PromiseProto_then%': ['Promise', 'prototype', 'then'], + '%Promise_all%': ['Promise', 'all'], + '%Promise_reject%': ['Promise', 'reject'], + '%Promise_resolve%': ['Promise', 'resolve'], + '%RangeErrorPrototype%': ['RangeError', 'prototype'], + '%ReferenceErrorPrototype%': ['ReferenceError', 'prototype'], + '%RegExpPrototype%': ['RegExp', 'prototype'], + '%SetPrototype%': ['Set', 'prototype'], + '%SharedArrayBufferPrototype%': ['SharedArrayBuffer', 'prototype'], + '%StringPrototype%': ['String', 'prototype'], + '%SymbolPrototype%': ['Symbol', 'prototype'], + '%SyntaxErrorPrototype%': ['SyntaxError', 'prototype'], + '%TypedArrayPrototype%': ['TypedArray', 'prototype'], + '%TypeErrorPrototype%': ['TypeError', 'prototype'], + '%Uint8ArrayPrototype%': ['Uint8Array', 'prototype'], + '%Uint8ClampedArrayPrototype%': ['Uint8ClampedArray', 'prototype'], + '%Uint16ArrayPrototype%': ['Uint16Array', 'prototype'], + '%Uint32ArrayPrototype%': ['Uint32Array', 'prototype'], + '%URIErrorPrototype%': ['URIError', 'prototype'], + '%WeakMapPrototype%': ['WeakMap', 'prototype'], + '%WeakSetPrototype%': ['WeakSet', 'prototype'] +}; + +var bind = require('function-bind'); +var hasOwn = require('hasown'); +var $concat = bind.call($call, Array.prototype.concat); +var $spliceApply = bind.call($apply, Array.prototype.splice); +var $replace = bind.call($call, String.prototype.replace); +var $strSlice = bind.call($call, String.prototype.slice); +var $exec = bind.call($call, RegExp.prototype.exec); + +/* adapted from https://github.com/lodash/lodash/blob/4.17.15/dist/lodash.js#L6735-L6744 */ +var rePropName = /[^%.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|%$))/g; +var reEscapeChar = /\\(\\)?/g; /** Used to match backslashes in property paths. */ +var stringToPath = function stringToPath(string) { + var first = $strSlice(string, 0, 1); + var last = $strSlice(string, -1); + if (first === '%' && last !== '%') { + throw new $SyntaxError('invalid intrinsic syntax, expected closing `%`'); + } else if (last === '%' && first !== '%') { + throw new $SyntaxError('invalid intrinsic syntax, expected opening `%`'); + } + var result = []; + $replace(string, rePropName, function (match, number, quote, subString) { + result[result.length] = quote ? $replace(subString, reEscapeChar, '$1') : number || match; + }); + return result; +}; +/* end adaptation */ + +var getBaseIntrinsic = function getBaseIntrinsic(name, allowMissing) { + var intrinsicName = name; + var alias; + if (hasOwn(LEGACY_ALIASES, intrinsicName)) { + alias = LEGACY_ALIASES[intrinsicName]; + intrinsicName = '%' + alias[0] + '%'; + } + + if (hasOwn(INTRINSICS, intrinsicName)) { + var value = INTRINSICS[intrinsicName]; + if (value === needsEval) { + value = doEval(intrinsicName); + } + if (typeof value === 'undefined' && !allowMissing) { + throw new $TypeError('intrinsic ' + name + ' exists, but is not available. Please file an issue!'); + } + + return { + alias: alias, + name: intrinsicName, + value: value + }; + } + + throw new $SyntaxError('intrinsic ' + name + ' does not exist!'); +}; + +module.exports = function GetIntrinsic(name, allowMissing) { + if (typeof name !== 'string' || name.length === 0) { + throw new $TypeError('intrinsic name must be a non-empty string'); + } + if (arguments.length > 1 && typeof allowMissing !== 'boolean') { + throw new $TypeError('"allowMissing" argument must be a boolean'); + } + + if ($exec(/^%?[^%]*%?$/, name) === null) { + throw new $SyntaxError('`%` may not be present anywhere but at the beginning and end of the intrinsic name'); + } + var parts = stringToPath(name); + var intrinsicBaseName = parts.length > 0 ? parts[0] : ''; + + var intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing); + var intrinsicRealName = intrinsic.name; + var value = intrinsic.value; + var skipFurtherCaching = false; + + var alias = intrinsic.alias; + if (alias) { + intrinsicBaseName = alias[0]; + $spliceApply(parts, $concat([0, 1], alias)); + } + + for (var i = 1, isOwn = true; i < parts.length; i += 1) { + var part = parts[i]; + var first = $strSlice(part, 0, 1); + var last = $strSlice(part, -1); + if ( + ( + (first === '"' || first === "'" || first === '`') + || (last === '"' || last === "'" || last === '`') + ) + && first !== last + ) { + throw new $SyntaxError('property names with quotes must have matching quotes'); + } + if (part === 'constructor' || !isOwn) { + skipFurtherCaching = true; + } + + intrinsicBaseName += '.' + part; + intrinsicRealName = '%' + intrinsicBaseName + '%'; + + if (hasOwn(INTRINSICS, intrinsicRealName)) { + value = INTRINSICS[intrinsicRealName]; + } else if (value != null) { + if (!(part in value)) { + if (!allowMissing) { + throw new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.'); + } + return void undefined; + } + if ($gOPD && (i + 1) >= parts.length) { + var desc = $gOPD(value, part); + isOwn = !!desc; + + // By convention, when a data property is converted to an accessor + // property to emulate a data property that does not suffer from + // the override mistake, that accessor's getter is marked with + // an `originalValue` property. Here, when we detect this, we + // uphold the illusion by pretending to see that original data + // property, i.e., returning the value rather than the getter + // itself. + if (isOwn && 'get' in desc && !('originalValue' in desc.get)) { + value = desc.get; + } else { + value = value[part]; + } + } else { + isOwn = hasOwn(value, part); + value = value[part]; + } + + if (isOwn && !skipFurtherCaching) { + INTRINSICS[intrinsicRealName] = value; + } + } + } + return value; +}; diff --git a/node_modules/get-intrinsic/package.json b/node_modules/get-intrinsic/package.json new file mode 100644 index 0000000..2828e73 --- /dev/null +++ b/node_modules/get-intrinsic/package.json @@ -0,0 +1,97 @@ +{ + "name": "get-intrinsic", + "version": "1.3.0", + "description": "Get and robustly cache all JS language-level intrinsics at first require time", + "main": "index.js", + "exports": { + ".": "./index.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "safe-publish-latest", + "prelint": "evalmd README.md", + "lint": "eslint --ext=.js,.mjs .", + "pretest": "npm run lint", + "tests-only": "nyc tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "npx npm@'>= 10.2' audit --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/get-intrinsic.git" + }, + "keywords": [ + "javascript", + "ecmascript", + "es", + "js", + "intrinsic", + "getintrinsic", + "es-abstract" + ], + "author": "Jordan Harband ", + "funding": { + "url": "https://github.com/sponsors/ljharb" + }, + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/get-intrinsic/issues" + }, + "homepage": "https://github.com/ljharb/get-intrinsic#readme", + "dependencies": { + "call-bind-apply-helpers": "^1.0.2", + "es-define-property": "^1.0.1", + "es-errors": "^1.3.0", + "es-object-atoms": "^1.1.1", + "function-bind": "^1.1.2", + "get-proto": "^1.0.1", + "gopd": "^1.2.0", + "has-symbols": "^1.1.0", + "hasown": "^2.0.2", + "math-intrinsics": "^1.1.0" + }, + "devDependencies": { + "@ljharb/eslint-config": "^21.1.1", + "auto-changelog": "^2.5.0", + "call-bound": "^1.0.3", + "encoding": "^0.1.13", + "es-abstract": "^1.23.9", + "es-value-fixtures": "^1.7.1", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "for-each": "^0.3.5", + "make-async-function": "^1.0.0", + "make-async-generator-function": "^1.0.0", + "make-generator-function": "^2.0.0", + "mock-property": "^1.1.0", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "object-inspect": "^1.13.4", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "testling": { + "files": "test/GetIntrinsic.js" + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/get-intrinsic/test/GetIntrinsic.js b/node_modules/get-intrinsic/test/GetIntrinsic.js new file mode 100644 index 0000000..d9c0f30 --- /dev/null +++ b/node_modules/get-intrinsic/test/GetIntrinsic.js @@ -0,0 +1,274 @@ +'use strict'; + +var GetIntrinsic = require('../'); + +var test = require('tape'); +var forEach = require('for-each'); +var debug = require('object-inspect'); +var generatorFns = require('make-generator-function')(); +var asyncFns = require('make-async-function').list(); +var asyncGenFns = require('make-async-generator-function')(); +var mockProperty = require('mock-property'); + +var callBound = require('call-bound'); +var v = require('es-value-fixtures'); +var $gOPD = require('gopd'); +var DefinePropertyOrThrow = require('es-abstract/2023/DefinePropertyOrThrow'); + +var $isProto = callBound('%Object.prototype.isPrototypeOf%'); + +test('export', function (t) { + t.equal(typeof GetIntrinsic, 'function', 'it is a function'); + t.equal(GetIntrinsic.length, 2, 'function has length of 2'); + + t.end(); +}); + +test('throws', function (t) { + t['throws']( + function () { GetIntrinsic('not an intrinsic'); }, + SyntaxError, + 'nonexistent intrinsic throws a syntax error' + ); + + t['throws']( + function () { GetIntrinsic(''); }, + TypeError, + 'empty string intrinsic throws a type error' + ); + + t['throws']( + function () { GetIntrinsic('.'); }, + SyntaxError, + '"just a dot" intrinsic throws a syntax error' + ); + + t['throws']( + function () { GetIntrinsic('%String'); }, + SyntaxError, + 'Leading % without trailing % throws a syntax error' + ); + + t['throws']( + function () { GetIntrinsic('String%'); }, + SyntaxError, + 'Trailing % without leading % throws a syntax error' + ); + + t['throws']( + function () { GetIntrinsic("String['prototype]"); }, + SyntaxError, + 'Dynamic property access is disallowed for intrinsics (unterminated string)' + ); + + t['throws']( + function () { GetIntrinsic('%Proxy.prototype.undefined%'); }, + TypeError, + "Throws when middle part doesn't exist (%Proxy.prototype.undefined%)" + ); + + t['throws']( + function () { GetIntrinsic('%Array.prototype%garbage%'); }, + SyntaxError, + 'Throws with extra percent signs' + ); + + t['throws']( + function () { GetIntrinsic('%Array.prototype%push%'); }, + SyntaxError, + 'Throws with extra percent signs, even on an existing intrinsic' + ); + + forEach(v.nonStrings, function (nonString) { + t['throws']( + function () { GetIntrinsic(nonString); }, + TypeError, + debug(nonString) + ' is not a String' + ); + }); + + forEach(v.nonBooleans, function (nonBoolean) { + t['throws']( + function () { GetIntrinsic('%', nonBoolean); }, + TypeError, + debug(nonBoolean) + ' is not a Boolean' + ); + }); + + forEach([ + 'toString', + 'propertyIsEnumerable', + 'hasOwnProperty' + ], function (objectProtoMember) { + t['throws']( + function () { GetIntrinsic(objectProtoMember); }, + SyntaxError, + debug(objectProtoMember) + ' is not an intrinsic' + ); + }); + + t.end(); +}); + +test('base intrinsics', function (t) { + t.equal(GetIntrinsic('%Object%'), Object, '%Object% yields Object'); + t.equal(GetIntrinsic('Object'), Object, 'Object yields Object'); + t.equal(GetIntrinsic('%Array%'), Array, '%Array% yields Array'); + t.equal(GetIntrinsic('Array'), Array, 'Array yields Array'); + + t.end(); +}); + +test('dotted paths', function (t) { + t.equal(GetIntrinsic('%Object.prototype.toString%'), Object.prototype.toString, '%Object.prototype.toString% yields Object.prototype.toString'); + t.equal(GetIntrinsic('Object.prototype.toString'), Object.prototype.toString, 'Object.prototype.toString yields Object.prototype.toString'); + t.equal(GetIntrinsic('%Array.prototype.push%'), Array.prototype.push, '%Array.prototype.push% yields Array.prototype.push'); + t.equal(GetIntrinsic('Array.prototype.push'), Array.prototype.push, 'Array.prototype.push yields Array.prototype.push'); + + test('underscore paths are aliases for dotted paths', { skip: !Object.isFrozen || Object.isFrozen(Object.prototype) }, function (st) { + var original = GetIntrinsic('%ObjProto_toString%'); + + forEach([ + '%Object.prototype.toString%', + 'Object.prototype.toString', + '%ObjectPrototype.toString%', + 'ObjectPrototype.toString', + '%ObjProto_toString%', + 'ObjProto_toString' + ], function (name) { + DefinePropertyOrThrow(Object.prototype, 'toString', { + '[[Value]]': function toString() { + return original.apply(this, arguments); + } + }); + st.equal(GetIntrinsic(name), original, name + ' yields original Object.prototype.toString'); + }); + + DefinePropertyOrThrow(Object.prototype, 'toString', { '[[Value]]': original }); + st.end(); + }); + + test('dotted paths cache', { skip: !Object.isFrozen || Object.isFrozen(Object.prototype) }, function (st) { + var original = GetIntrinsic('%Object.prototype.propertyIsEnumerable%'); + + forEach([ + '%Object.prototype.propertyIsEnumerable%', + 'Object.prototype.propertyIsEnumerable', + '%ObjectPrototype.propertyIsEnumerable%', + 'ObjectPrototype.propertyIsEnumerable' + ], function (name) { + var restore = mockProperty(Object.prototype, 'propertyIsEnumerable', { + value: function propertyIsEnumerable() { + return original.apply(this, arguments); + } + }); + st.equal(GetIntrinsic(name), original, name + ' yields cached Object.prototype.propertyIsEnumerable'); + + restore(); + }); + + st.end(); + }); + + test('dotted path reports correct error', function (st) { + st['throws'](function () { + GetIntrinsic('%NonExistentIntrinsic.prototype.property%'); + }, /%NonExistentIntrinsic%/, 'The base intrinsic of %NonExistentIntrinsic.prototype.property% is %NonExistentIntrinsic%'); + + st['throws'](function () { + GetIntrinsic('%NonExistentIntrinsicPrototype.property%'); + }, /%NonExistentIntrinsicPrototype%/, 'The base intrinsic of %NonExistentIntrinsicPrototype.property% is %NonExistentIntrinsicPrototype%'); + + st.end(); + }); + + t.end(); +}); + +test('accessors', { skip: !$gOPD || typeof Map !== 'function' }, function (t) { + var actual = $gOPD(Map.prototype, 'size'); + t.ok(actual, 'Map.prototype.size has a descriptor'); + t.equal(typeof actual.get, 'function', 'Map.prototype.size has a getter function'); + t.equal(GetIntrinsic('%Map.prototype.size%'), actual.get, '%Map.prototype.size% yields the getter for it'); + t.equal(GetIntrinsic('Map.prototype.size'), actual.get, 'Map.prototype.size yields the getter for it'); + + t.end(); +}); + +test('generator functions', { skip: !generatorFns.length }, function (t) { + var $GeneratorFunction = GetIntrinsic('%GeneratorFunction%'); + var $GeneratorFunctionPrototype = GetIntrinsic('%Generator%'); + var $GeneratorPrototype = GetIntrinsic('%GeneratorPrototype%'); + + forEach(generatorFns, function (genFn) { + var fnName = genFn.name; + fnName = fnName ? "'" + fnName + "'" : 'genFn'; + + t.ok(genFn instanceof $GeneratorFunction, fnName + ' instanceof %GeneratorFunction%'); + t.ok($isProto($GeneratorFunctionPrototype, genFn), '%Generator% is prototype of ' + fnName); + t.ok($isProto($GeneratorPrototype, genFn.prototype), '%GeneratorPrototype% is prototype of ' + fnName + '.prototype'); + }); + + t.end(); +}); + +test('async functions', { skip: !asyncFns.length }, function (t) { + var $AsyncFunction = GetIntrinsic('%AsyncFunction%'); + var $AsyncFunctionPrototype = GetIntrinsic('%AsyncFunctionPrototype%'); + + forEach(asyncFns, function (asyncFn) { + var fnName = asyncFn.name; + fnName = fnName ? "'" + fnName + "'" : 'asyncFn'; + + t.ok(asyncFn instanceof $AsyncFunction, fnName + ' instanceof %AsyncFunction%'); + t.ok($isProto($AsyncFunctionPrototype, asyncFn), '%AsyncFunctionPrototype% is prototype of ' + fnName); + }); + + t.end(); +}); + +test('async generator functions', { skip: asyncGenFns.length === 0 }, function (t) { + var $AsyncGeneratorFunction = GetIntrinsic('%AsyncGeneratorFunction%'); + var $AsyncGeneratorFunctionPrototype = GetIntrinsic('%AsyncGenerator%'); + var $AsyncGeneratorPrototype = GetIntrinsic('%AsyncGeneratorPrototype%'); + + forEach(asyncGenFns, function (asyncGenFn) { + var fnName = asyncGenFn.name; + fnName = fnName ? "'" + fnName + "'" : 'asyncGenFn'; + + t.ok(asyncGenFn instanceof $AsyncGeneratorFunction, fnName + ' instanceof %AsyncGeneratorFunction%'); + t.ok($isProto($AsyncGeneratorFunctionPrototype, asyncGenFn), '%AsyncGenerator% is prototype of ' + fnName); + t.ok($isProto($AsyncGeneratorPrototype, asyncGenFn.prototype), '%AsyncGeneratorPrototype% is prototype of ' + fnName + '.prototype'); + }); + + t.end(); +}); + +test('%ThrowTypeError%', function (t) { + var $ThrowTypeError = GetIntrinsic('%ThrowTypeError%'); + + t.equal(typeof $ThrowTypeError, 'function', 'is a function'); + t['throws']( + $ThrowTypeError, + TypeError, + '%ThrowTypeError% throws a TypeError' + ); + + t.end(); +}); + +test('allowMissing', { skip: asyncGenFns.length > 0 }, function (t) { + t['throws']( + function () { GetIntrinsic('%AsyncGeneratorPrototype%'); }, + TypeError, + 'throws when missing' + ); + + t.equal( + GetIntrinsic('%AsyncGeneratorPrototype%', true), + undefined, + 'does not throw when allowMissing' + ); + + t.end(); +}); diff --git a/node_modules/get-proto/.eslintrc b/node_modules/get-proto/.eslintrc new file mode 100644 index 0000000..1d21a8a --- /dev/null +++ b/node_modules/get-proto/.eslintrc @@ -0,0 +1,10 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "id-length": "off", + "sort-keys": "off", + }, +} diff --git a/node_modules/get-proto/.github/FUNDING.yml b/node_modules/get-proto/.github/FUNDING.yml new file mode 100644 index 0000000..93183ef --- /dev/null +++ b/node_modules/get-proto/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/get-proto +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/get-proto/.nycrc b/node_modules/get-proto/.nycrc new file mode 100644 index 0000000..bdd626c --- /dev/null +++ b/node_modules/get-proto/.nycrc @@ -0,0 +1,9 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/get-proto/CHANGELOG.md b/node_modules/get-proto/CHANGELOG.md new file mode 100644 index 0000000..5860229 --- /dev/null +++ b/node_modules/get-proto/CHANGELOG.md @@ -0,0 +1,21 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.0.1](https://github.com/ljharb/get-proto/compare/v1.0.0...v1.0.1) - 2025-01-02 + +### Commits + +- [Fix] for the `Object.getPrototypeOf` window, throw for non-objects [`7fe6508`](https://github.com/ljharb/get-proto/commit/7fe6508b71419ebe1976bedb86001d1feaeaa49a) + +## v1.0.0 - 2025-01-01 + +### Commits + +- Initial implementation, tests, readme, types [`5c70775`](https://github.com/ljharb/get-proto/commit/5c707751e81c3deeb2cf980d185fc7fd43611415) +- Initial commit [`7c65c2a`](https://github.com/ljharb/get-proto/commit/7c65c2ad4e33d5dae2f219ebe1a046ae2256972c) +- npm init [`0b8cf82`](https://github.com/ljharb/get-proto/commit/0b8cf824c9634e4a34ef7dd2a2cdc5be6ac79518) +- Only apps should have lockfiles [`a6d1bff`](https://github.com/ljharb/get-proto/commit/a6d1bffc364f5828377cea7194558b2dbef7aea2) diff --git a/node_modules/get-proto/LICENSE b/node_modules/get-proto/LICENSE new file mode 100644 index 0000000..eeabd1c --- /dev/null +++ b/node_modules/get-proto/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2025 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/get-proto/Object.getPrototypeOf.d.ts b/node_modules/get-proto/Object.getPrototypeOf.d.ts new file mode 100644 index 0000000..028b3ff --- /dev/null +++ b/node_modules/get-proto/Object.getPrototypeOf.d.ts @@ -0,0 +1,5 @@ +declare function getProto(object: O): object | null; + +declare const x: typeof getProto | null; + +export = x; \ No newline at end of file diff --git a/node_modules/get-proto/Object.getPrototypeOf.js b/node_modules/get-proto/Object.getPrototypeOf.js new file mode 100644 index 0000000..c2cbbdf --- /dev/null +++ b/node_modules/get-proto/Object.getPrototypeOf.js @@ -0,0 +1,6 @@ +'use strict'; + +var $Object = require('es-object-atoms'); + +/** @type {import('./Object.getPrototypeOf')} */ +module.exports = $Object.getPrototypeOf || null; diff --git a/node_modules/get-proto/README.md b/node_modules/get-proto/README.md new file mode 100644 index 0000000..f8b4cce --- /dev/null +++ b/node_modules/get-proto/README.md @@ -0,0 +1,50 @@ +# get-proto [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +Robustly get the [[Prototype]] of an object. Uses the best available method. + +## Getting started + +```sh +npm install --save get-proto +``` + +## Usage/Examples + +```js +const assert = require('assert'); +const getProto = require('get-proto'); + +const a = { a: 1, b: 2, [Symbol.toStringTag]: 'foo' }; +const b = { c: 3, __proto__: a }; + +assert.equal(getProto(b), a); +assert.equal(getProto(a), Object.prototype); +assert.equal(getProto({ __proto__: null }), null); +``` + +## Tests + +Clone the repo, `npm install`, and run `npm test` + +[package-url]: https://npmjs.org/package/get-proto +[npm-version-svg]: https://versionbadg.es/ljharb/get-proto.svg +[deps-svg]: https://david-dm.org/ljharb/get-proto.svg +[deps-url]: https://david-dm.org/ljharb/get-proto +[dev-deps-svg]: https://david-dm.org/ljharb/get-proto/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/get-proto#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/get-proto.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/get-proto.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/get-proto.svg +[downloads-url]: https://npm-stat.com/charts.html?package=get-proto +[codecov-image]: https://codecov.io/gh/ljharb/get-proto/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/get-proto/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/get-proto +[actions-url]: https://github.com/ljharb/get-proto/actions diff --git a/node_modules/get-proto/Reflect.getPrototypeOf.d.ts b/node_modules/get-proto/Reflect.getPrototypeOf.d.ts new file mode 100644 index 0000000..2388fe0 --- /dev/null +++ b/node_modules/get-proto/Reflect.getPrototypeOf.d.ts @@ -0,0 +1,3 @@ +declare const x: typeof Reflect.getPrototypeOf | null; + +export = x; \ No newline at end of file diff --git a/node_modules/get-proto/Reflect.getPrototypeOf.js b/node_modules/get-proto/Reflect.getPrototypeOf.js new file mode 100644 index 0000000..e6c51be --- /dev/null +++ b/node_modules/get-proto/Reflect.getPrototypeOf.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./Reflect.getPrototypeOf')} */ +module.exports = (typeof Reflect !== 'undefined' && Reflect.getPrototypeOf) || null; diff --git a/node_modules/get-proto/index.d.ts b/node_modules/get-proto/index.d.ts new file mode 100644 index 0000000..2c021f3 --- /dev/null +++ b/node_modules/get-proto/index.d.ts @@ -0,0 +1,5 @@ +declare function getProto(object: O): object | null; + +declare const x: typeof getProto | null; + +export = x; diff --git a/node_modules/get-proto/index.js b/node_modules/get-proto/index.js new file mode 100644 index 0000000..7e5747b --- /dev/null +++ b/node_modules/get-proto/index.js @@ -0,0 +1,27 @@ +'use strict'; + +var reflectGetProto = require('./Reflect.getPrototypeOf'); +var originalGetProto = require('./Object.getPrototypeOf'); + +var getDunderProto = require('dunder-proto/get'); + +/** @type {import('.')} */ +module.exports = reflectGetProto + ? function getProto(O) { + // @ts-expect-error TS can't narrow inside a closure, for some reason + return reflectGetProto(O); + } + : originalGetProto + ? function getProto(O) { + if (!O || (typeof O !== 'object' && typeof O !== 'function')) { + throw new TypeError('getProto: not an object'); + } + // @ts-expect-error TS can't narrow inside a closure, for some reason + return originalGetProto(O); + } + : getDunderProto + ? function getProto(O) { + // @ts-expect-error TS can't narrow inside a closure, for some reason + return getDunderProto(O); + } + : null; diff --git a/node_modules/get-proto/package.json b/node_modules/get-proto/package.json new file mode 100644 index 0000000..9c35cec --- /dev/null +++ b/node_modules/get-proto/package.json @@ -0,0 +1,81 @@ +{ + "name": "get-proto", + "version": "1.0.1", + "description": "Robustly get the [[Prototype]] of an object", + "main": "index.js", + "exports": { + ".": "./index.js", + "./Reflect.getPrototypeOf": "./Reflect.getPrototypeOf.js", + "./Object.getPrototypeOf": "./Object.getPrototypeOf.js", + "./package.json": "./package.json" + }, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "safe-publish-latest", + "pretest": "npm run --silent lint", + "test": "npm run tests-only", + "posttest": "npx npm@\">=10.2\" audit --production", + "tests-only": "nyc tape 'test/**/*.js'", + "prelint": "evalmd README.md", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc && attw -P", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/get-proto.git" + }, + "keywords": [ + "get", + "proto", + "prototype", + "getPrototypeOf", + "[[Prototype]]" + ], + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/get-proto/issues" + }, + "homepage": "https://github.com/ljharb/get-proto#readme", + "dependencies": { + "dunder-proto": "^1.0.1", + "es-object-atoms": "^1.0.0" + }, + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.2", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.3", + "@types/tape": "^5.8.0", + "auto-changelog": "^2.5.0", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "engines": { + "node": ">= 0.4" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "testling": { + "files": "test/index.js" + } +} diff --git a/node_modules/get-proto/test/index.js b/node_modules/get-proto/test/index.js new file mode 100644 index 0000000..5a2ece2 --- /dev/null +++ b/node_modules/get-proto/test/index.js @@ -0,0 +1,68 @@ +'use strict'; + +var test = require('tape'); + +var getProto = require('../'); + +test('getProto', function (t) { + t.equal(typeof getProto, 'function', 'is a function'); + + t.test('can get', { skip: !getProto }, function (st) { + if (getProto) { // TS doesn't understand tape's skip + var proto = { b: 2 }; + st.equal(getProto(proto), Object.prototype, 'proto: returns the [[Prototype]]'); + + st.test('nullish value', function (s2t) { + // @ts-expect-error + s2t['throws'](function () { return getProto(undefined); }, TypeError, 'undefined is not an object'); + // @ts-expect-error + s2t['throws'](function () { return getProto(null); }, TypeError, 'null is not an object'); + s2t.end(); + }); + + // @ts-expect-error + st['throws'](function () { getProto(true); }, 'throws for true'); + // @ts-expect-error + st['throws'](function () { getProto(false); }, 'throws for false'); + // @ts-expect-error + st['throws'](function () { getProto(42); }, 'throws for 42'); + // @ts-expect-error + st['throws'](function () { getProto(NaN); }, 'throws for NaN'); + // @ts-expect-error + st['throws'](function () { getProto(0); }, 'throws for +0'); + // @ts-expect-error + st['throws'](function () { getProto(-0); }, 'throws for -0'); + // @ts-expect-error + st['throws'](function () { getProto(Infinity); }, 'throws for ∞'); + // @ts-expect-error + st['throws'](function () { getProto(-Infinity); }, 'throws for -∞'); + // @ts-expect-error + st['throws'](function () { getProto(''); }, 'throws for empty string'); + // @ts-expect-error + st['throws'](function () { getProto('foo'); }, 'throws for non-empty string'); + st.equal(getProto(/a/g), RegExp.prototype); + st.equal(getProto(new Date()), Date.prototype); + st.equal(getProto(function () {}), Function.prototype); + st.equal(getProto([]), Array.prototype); + st.equal(getProto({}), Object.prototype); + + var nullObject = { __proto__: null }; + if ('toString' in nullObject) { + st.comment('no null objects in this engine'); + st.equal(getProto(nullObject), Object.prototype, '"null" object has Object.prototype as [[Prototype]]'); + } else { + st.equal(getProto(nullObject), null, 'null object has null [[Prototype]]'); + } + } + + st.end(); + }); + + t.test('can not get', { skip: !!getProto }, function (st) { + st.equal(getProto, null); + + st.end(); + }); + + t.end(); +}); diff --git a/node_modules/get-proto/tsconfig.json b/node_modules/get-proto/tsconfig.json new file mode 100644 index 0000000..60fb90e --- /dev/null +++ b/node_modules/get-proto/tsconfig.json @@ -0,0 +1,9 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + //"target": "es2021", + }, + "exclude": [ + "coverage", + ], +} diff --git a/node_modules/gopd/.eslintrc b/node_modules/gopd/.eslintrc new file mode 100644 index 0000000..e2550c0 --- /dev/null +++ b/node_modules/gopd/.eslintrc @@ -0,0 +1,16 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "func-style": [2, "declaration"], + "id-length": 0, + "multiline-comment-style": 0, + "new-cap": [2, { + "capIsNewExceptions": [ + "GetIntrinsic", + ], + }], + }, +} diff --git a/node_modules/gopd/.github/FUNDING.yml b/node_modules/gopd/.github/FUNDING.yml new file mode 100644 index 0000000..94a44a8 --- /dev/null +++ b/node_modules/gopd/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/gopd +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/gopd/CHANGELOG.md b/node_modules/gopd/CHANGELOG.md new file mode 100644 index 0000000..87f5727 --- /dev/null +++ b/node_modules/gopd/CHANGELOG.md @@ -0,0 +1,45 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.2.0](https://github.com/ljharb/gopd/compare/v1.1.0...v1.2.0) - 2024-12-03 + +### Commits + +- [New] add `gOPD` entry point; remove `get-intrinsic` [`5b61232`](https://github.com/ljharb/gopd/commit/5b61232dedea4591a314bcf16101b1961cee024e) + +## [v1.1.0](https://github.com/ljharb/gopd/compare/v1.0.1...v1.1.0) - 2024-11-29 + +### Commits + +- [New] add types [`f585e39`](https://github.com/ljharb/gopd/commit/f585e397886d270e4ba84e53d226e4f9ca2eb0e6) +- [Dev Deps] update `@ljharb/eslint-config`, `auto-changelog`, `tape` [`0b8e4fd`](https://github.com/ljharb/gopd/commit/0b8e4fded64397a7726a9daa144a6cc9a5e2edfa) +- [Dev Deps] update `aud`, `npmignore`, `tape` [`48378b2`](https://github.com/ljharb/gopd/commit/48378b2443f09a4f7efbd0fb6c3ee845a6cabcf3) +- [Dev Deps] update `@ljharb/eslint-config`, `aud`, `tape` [`78099ee`](https://github.com/ljharb/gopd/commit/78099eeed41bfdc134c912280483689cc8861c31) +- [Tests] replace `aud` with `npm audit` [`4e0d0ac`](https://github.com/ljharb/gopd/commit/4e0d0ac47619d24a75318a8e1f543ee04b2a2632) +- [meta] add missing `engines.node` [`1443316`](https://github.com/ljharb/gopd/commit/14433165d07835c680155b3dfd62d9217d735eca) +- [Deps] update `get-intrinsic` [`eee5f51`](https://github.com/ljharb/gopd/commit/eee5f51769f3dbaf578b70e2a3199116b01aa670) +- [Deps] update `get-intrinsic` [`550c378`](https://github.com/ljharb/gopd/commit/550c3780e3a9c77b62565712a001b4ed64ea61f5) +- [Dev Deps] add missing peer dep [`8c2ecf8`](https://github.com/ljharb/gopd/commit/8c2ecf848122e4e30abfc5b5086fb48b390dce75) + +## [v1.0.1](https://github.com/ljharb/gopd/compare/v1.0.0...v1.0.1) - 2022-11-01 + +### Commits + +- [Fix] actually export gOPD instead of dP [`4b624bf`](https://github.com/ljharb/gopd/commit/4b624bfbeff788c5e3ff16d9443a83627847234f) + +## v1.0.0 - 2022-11-01 + +### Commits + +- Initial implementation, tests, readme [`0911e01`](https://github.com/ljharb/gopd/commit/0911e012cd642092bd88b732c161c58bf4f20bea) +- Initial commit [`b84e33f`](https://github.com/ljharb/gopd/commit/b84e33f5808a805ac57ff88d4247ad935569acbe) +- [actions] add reusable workflows [`12ae28a`](https://github.com/ljharb/gopd/commit/12ae28ae5f50f86e750215b6e2188901646d0119) +- npm init [`280118b`](https://github.com/ljharb/gopd/commit/280118badb45c80b4483836b5cb5315bddf6e582) +- [meta] add `auto-changelog` [`bb78de5`](https://github.com/ljharb/gopd/commit/bb78de5639a180747fb290c28912beaaf1615709) +- [meta] create FUNDING.yml; add `funding` in package.json [`11c22e6`](https://github.com/ljharb/gopd/commit/11c22e6355bb01f24e7fac4c9bb3055eb5b25002) +- [meta] use `npmignore` to autogenerate an npmignore file [`4f4537a`](https://github.com/ljharb/gopd/commit/4f4537a843b39f698c52f072845092e6fca345bb) +- Only apps should have lockfiles [`c567022`](https://github.com/ljharb/gopd/commit/c567022a18573aa7951cf5399445d9840e23e98b) diff --git a/node_modules/gopd/LICENSE b/node_modules/gopd/LICENSE new file mode 100644 index 0000000..6abfe14 --- /dev/null +++ b/node_modules/gopd/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2022 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/gopd/README.md b/node_modules/gopd/README.md new file mode 100644 index 0000000..784e56a --- /dev/null +++ b/node_modules/gopd/README.md @@ -0,0 +1,40 @@ +# gopd [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation. + +## Usage + +```javascript +var gOPD = require('gopd'); +var assert = require('assert'); + +if (gOPD) { + assert.equal(typeof gOPD, 'function', 'descriptors supported'); + // use gOPD like Object.getOwnPropertyDescriptor here +} else { + assert.ok(!gOPD, 'descriptors not supported'); +} +``` + +[package-url]: https://npmjs.org/package/gopd +[npm-version-svg]: https://versionbadg.es/ljharb/gopd.svg +[deps-svg]: https://david-dm.org/ljharb/gopd.svg +[deps-url]: https://david-dm.org/ljharb/gopd +[dev-deps-svg]: https://david-dm.org/ljharb/gopd/dev-status.svg +[dev-deps-url]: https://david-dm.org/ljharb/gopd#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/gopd.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/gopd.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/gopd.svg +[downloads-url]: https://npm-stat.com/charts.html?package=gopd +[codecov-image]: https://codecov.io/gh/ljharb/gopd/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/ljharb/gopd/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/gopd +[actions-url]: https://github.com/ljharb/gopd/actions diff --git a/node_modules/gopd/gOPD.d.ts b/node_modules/gopd/gOPD.d.ts new file mode 100644 index 0000000..def48a3 --- /dev/null +++ b/node_modules/gopd/gOPD.d.ts @@ -0,0 +1 @@ +export = Object.getOwnPropertyDescriptor; diff --git a/node_modules/gopd/gOPD.js b/node_modules/gopd/gOPD.js new file mode 100644 index 0000000..cf9616c --- /dev/null +++ b/node_modules/gopd/gOPD.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./gOPD')} */ +module.exports = Object.getOwnPropertyDescriptor; diff --git a/node_modules/gopd/index.d.ts b/node_modules/gopd/index.d.ts new file mode 100644 index 0000000..e228065 --- /dev/null +++ b/node_modules/gopd/index.d.ts @@ -0,0 +1,5 @@ +declare function gOPD(obj: O, prop: K): PropertyDescriptor | undefined; + +declare const fn: typeof gOPD | undefined | null; + +export = fn; \ No newline at end of file diff --git a/node_modules/gopd/index.js b/node_modules/gopd/index.js new file mode 100644 index 0000000..a4081b0 --- /dev/null +++ b/node_modules/gopd/index.js @@ -0,0 +1,15 @@ +'use strict'; + +/** @type {import('.')} */ +var $gOPD = require('./gOPD'); + +if ($gOPD) { + try { + $gOPD([], 'length'); + } catch (e) { + // IE 8 has a broken gOPD + $gOPD = null; + } +} + +module.exports = $gOPD; diff --git a/node_modules/gopd/package.json b/node_modules/gopd/package.json new file mode 100644 index 0000000..01c5ffa --- /dev/null +++ b/node_modules/gopd/package.json @@ -0,0 +1,77 @@ +{ + "name": "gopd", + "version": "1.2.0", + "description": "`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.", + "main": "index.js", + "exports": { + ".": "./index.js", + "./gOPD": "./gOPD.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prelint": "tsc -p . && attw -P", + "lint": "eslint --ext=js,mjs .", + "postlint": "evalmd README.md", + "pretest": "npm run lint", + "tests-only": "tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "npx npm@'>=10.2' audit --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/ljharb/gopd.git" + }, + "keywords": [ + "ecmascript", + "javascript", + "getownpropertydescriptor", + "property", + "descriptor" + ], + "author": "Jordan Harband ", + "funding": { + "url": "https://github.com/sponsors/ljharb" + }, + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/gopd/issues" + }, + "homepage": "https://github.com/ljharb/gopd#readme", + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.0", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.0", + "@types/tape": "^5.6.5", + "auto-changelog": "^2.5.0", + "encoding": "^0.1.13", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/gopd/test/index.js b/node_modules/gopd/test/index.js new file mode 100644 index 0000000..6f43453 --- /dev/null +++ b/node_modules/gopd/test/index.js @@ -0,0 +1,36 @@ +'use strict'; + +var test = require('tape'); +var gOPD = require('../'); + +test('gOPD', function (t) { + t.test('supported', { skip: !gOPD }, function (st) { + st.equal(typeof gOPD, 'function', 'is a function'); + + var obj = { x: 1 }; + st.ok('x' in obj, 'property exists'); + + // @ts-expect-error TS can't figure out narrowing from `skip` + var desc = gOPD(obj, 'x'); + st.deepEqual( + desc, + { + configurable: true, + enumerable: true, + value: 1, + writable: true + }, + 'descriptor is as expected' + ); + + st.end(); + }); + + t.test('not supported', { skip: !!gOPD }, function (st) { + st.notOk(gOPD, 'is falsy'); + + st.end(); + }); + + t.end(); +}); diff --git a/node_modules/gopd/tsconfig.json b/node_modules/gopd/tsconfig.json new file mode 100644 index 0000000..d9a6668 --- /dev/null +++ b/node_modules/gopd/tsconfig.json @@ -0,0 +1,9 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "es2021", + }, + "exclude": [ + "coverage", + ], +} diff --git a/node_modules/has-symbols/.eslintrc b/node_modules/has-symbols/.eslintrc new file mode 100644 index 0000000..2d9a66a --- /dev/null +++ b/node_modules/has-symbols/.eslintrc @@ -0,0 +1,11 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "max-statements-per-line": [2, { "max": 2 }], + "no-magic-numbers": 0, + "multiline-comment-style": 0, + } +} diff --git a/node_modules/has-symbols/.github/FUNDING.yml b/node_modules/has-symbols/.github/FUNDING.yml new file mode 100644 index 0000000..04cf87e --- /dev/null +++ b/node_modules/has-symbols/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/has-symbols +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/has-symbols/.nycrc b/node_modules/has-symbols/.nycrc new file mode 100644 index 0000000..bdd626c --- /dev/null +++ b/node_modules/has-symbols/.nycrc @@ -0,0 +1,9 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/has-symbols/CHANGELOG.md b/node_modules/has-symbols/CHANGELOG.md new file mode 100644 index 0000000..cc3cf83 --- /dev/null +++ b/node_modules/has-symbols/CHANGELOG.md @@ -0,0 +1,91 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.1.0](https://github.com/inspect-js/has-symbols/compare/v1.0.3...v1.1.0) - 2024-12-02 + +### Commits + +- [actions] update workflows [`548c0bf`](https://github.com/inspect-js/has-symbols/commit/548c0bf8c9b1235458df7a1c0490b0064647a282) +- [actions] further shard; update action deps [`bec56bb`](https://github.com/inspect-js/has-symbols/commit/bec56bb0fb44b43a786686b944875a3175cf3ff3) +- [meta] use `npmignore` to autogenerate an npmignore file [`ac81032`](https://github.com/inspect-js/has-symbols/commit/ac81032809157e0a079e5264e9ce9b6f1275777e) +- [New] add types [`6469cbf`](https://github.com/inspect-js/has-symbols/commit/6469cbff1866cfe367b2b3d181d9296ec14b2a3d) +- [actions] update rebase action to use reusable workflow [`9c9d4d0`](https://github.com/inspect-js/has-symbols/commit/9c9d4d0d8938e4b267acdf8e421f4e92d1716d72) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `tape` [`adb5887`](https://github.com/inspect-js/has-symbols/commit/adb5887ca9444849b08beb5caaa9e1d42320cdfb) +- [Dev Deps] update `@ljharb/eslint-config`, `aud`, `tape` [`13ec198`](https://github.com/inspect-js/has-symbols/commit/13ec198ec80f1993a87710af1606a1970b22c7cb) +- [Dev Deps] update `auto-changelog`, `core-js`, `tape` [`941be52`](https://github.com/inspect-js/has-symbols/commit/941be5248387cab1da72509b22acf3fdb223f057) +- [Tests] replace `aud` with `npm audit` [`74f49e9`](https://github.com/inspect-js/has-symbols/commit/74f49e9a9d17a443020784234a1c53ce765b3559) +- [Dev Deps] update `npmignore` [`9c0ac04`](https://github.com/inspect-js/has-symbols/commit/9c0ac0452a834f4c2a4b54044f2d6a89f17e9a70) +- [Dev Deps] add missing peer dep [`52337a5`](https://github.com/inspect-js/has-symbols/commit/52337a5621cced61f846f2afdab7707a8132cc12) + +## [v1.0.3](https://github.com/inspect-js/has-symbols/compare/v1.0.2...v1.0.3) - 2022-03-01 + +### Commits + +- [actions] use `node/install` instead of `node/run`; use `codecov` action [`518b28f`](https://github.com/inspect-js/has-symbols/commit/518b28f6c5a516cbccae30794e40aa9f738b1693) +- [meta] add `bugs` and `homepage` fields; reorder package.json [`c480b13`](https://github.com/inspect-js/has-symbols/commit/c480b13fd6802b557e1cef9749872cb5fdeef744) +- [actions] reuse common workflows [`01d0ee0`](https://github.com/inspect-js/has-symbols/commit/01d0ee0a8d97c0947f5edb73eb722027a77b2b07) +- [actions] update codecov uploader [`6424ebe`](https://github.com/inspect-js/has-symbols/commit/6424ebe86b2c9c7c3d2e9bd4413a4e4f168cb275) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `tape` [`dfa7e7f`](https://github.com/inspect-js/has-symbols/commit/dfa7e7ff38b594645d8c8222aab895157fa7e282) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `safe-publish-latest`, `tape` [`0c8d436`](https://github.com/inspect-js/has-symbols/commit/0c8d43685c45189cea9018191d4fd7eca91c9d02) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `tape` [`9026554`](https://github.com/inspect-js/has-symbols/commit/902655442a1bf88e72b42345494ef0c60f5d36ab) +- [readme] add actions and codecov badges [`eaa9682`](https://github.com/inspect-js/has-symbols/commit/eaa9682f990f481d3acf7a1c7600bec36f7b3adc) +- [Dev Deps] update `eslint`, `tape` [`bc7a3ba`](https://github.com/inspect-js/has-symbols/commit/bc7a3ba46f27b7743f8a2579732d59d1b9ac791e) +- [Dev Deps] update `eslint`, `auto-changelog` [`0ace00a`](https://github.com/inspect-js/has-symbols/commit/0ace00af08a88cdd1e6ce0d60357d941c60c2d9f) +- [meta] use `prepublishOnly` script for npm 7+ [`093f72b`](https://github.com/inspect-js/has-symbols/commit/093f72bc2b0ed00c781f444922a5034257bf561d) +- [Tests] test on all 16 minors [`9b80d3d`](https://github.com/inspect-js/has-symbols/commit/9b80d3d9102529f04c20ec5b1fcc6e38426c6b03) + +## [v1.0.2](https://github.com/inspect-js/has-symbols/compare/v1.0.1...v1.0.2) - 2021-02-27 + +### Fixed + +- [Fix] use a universal way to get the original Symbol [`#11`](https://github.com/inspect-js/has-symbols/issues/11) + +### Commits + +- [Tests] migrate tests to Github Actions [`90ae798`](https://github.com/inspect-js/has-symbols/commit/90ae79820bdfe7bc703d67f5f3c5e205f98556d3) +- [meta] do not publish github action workflow files [`29e60a1`](https://github.com/inspect-js/has-symbols/commit/29e60a1b7c25c7f1acf7acff4a9320d0d10c49b4) +- [Tests] run `nyc` on all tests [`8476b91`](https://github.com/inspect-js/has-symbols/commit/8476b915650d360915abe2522505abf4b0e8f0ae) +- [readme] fix repo URLs, remove defunct badges [`126288e`](https://github.com/inspect-js/has-symbols/commit/126288ecc1797c0a40247a6b78bcb2e0bc5d7036) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `core-js`, `get-own-property-symbols` [`d84bdfa`](https://github.com/inspect-js/has-symbols/commit/d84bdfa48ac5188abbb4904b42614cd6c030940a) +- [Tests] fix linting errors [`0df3070`](https://github.com/inspect-js/has-symbols/commit/0df3070b981b6c9f2ee530c09189a7f5c6def839) +- [actions] add "Allow Edits" workflow [`1e6bc29`](https://github.com/inspect-js/has-symbols/commit/1e6bc29b188f32b9648657b07eda08504be5aa9c) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `tape` [`36cea2a`](https://github.com/inspect-js/has-symbols/commit/36cea2addd4e6ec435f35a2656b4e9ef82498e9b) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `tape` [`1278338`](https://github.com/inspect-js/has-symbols/commit/127833801865fbc2cc8979beb9ca869c7bfe8222) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `tape` [`1493254`](https://github.com/inspect-js/has-symbols/commit/1493254eda13db5fb8fc5e4a3e8324b3d196029d) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `core-js` [`b090bf2`](https://github.com/inspect-js/has-symbols/commit/b090bf214d3679a30edc1e2d729d466ab5183e1d) +- [actions] switch Automatic Rebase workflow to `pull_request_target` event [`4addb7a`](https://github.com/inspect-js/has-symbols/commit/4addb7ab4dc73f927ae99928d68817554fc21dc0) +- [Dev Deps] update `auto-changelog`, `tape` [`81d0baf`](https://github.com/inspect-js/has-symbols/commit/81d0baf3816096a89a8558e8043895f7a7d10d8b) +- [Dev Deps] update `auto-changelog`; add `aud` [`1a4e561`](https://github.com/inspect-js/has-symbols/commit/1a4e5612c25d91c3a03d509721d02630bc4fe3da) +- [readme] remove unused testling URLs [`3000941`](https://github.com/inspect-js/has-symbols/commit/3000941f958046e923ed8152edb1ef4a599e6fcc) +- [Tests] only audit prod deps [`692e974`](https://github.com/inspect-js/has-symbols/commit/692e9743c912410e9440207631a643a34b4741a1) +- [Dev Deps] update `@ljharb/eslint-config` [`51c946c`](https://github.com/inspect-js/has-symbols/commit/51c946c7f6baa793ec5390bb5a45cdce16b4ba76) + +## [v1.0.1](https://github.com/inspect-js/has-symbols/compare/v1.0.0...v1.0.1) - 2019-11-16 + +### Commits + +- [Tests] use shared travis-ci configs [`ce396c9`](https://github.com/inspect-js/has-symbols/commit/ce396c9419ff11c43d0da5d05cdbb79f7fb42229) +- [Tests] up to `node` `v12.4`, `v11.15`, `v10.15`, `v9.11`, `v8.15`, `v7.10`, `v6.17`, `v4.9`; use `nvm install-latest-npm` [`0690732`](https://github.com/inspect-js/has-symbols/commit/0690732801f47ab429f39ba1962f522d5c462d6b) +- [meta] add `auto-changelog` [`2163d0b`](https://github.com/inspect-js/has-symbols/commit/2163d0b7f36343076b8f947cd1667dd1750f26fc) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `core-js`, `safe-publish-latest`, `tape` [`8e0951f`](https://github.com/inspect-js/has-symbols/commit/8e0951f1a7a2e52068222b7bb73511761e6e4d9c) +- [actions] add automatic rebasing / merge commit blocking [`b09cdb7`](https://github.com/inspect-js/has-symbols/commit/b09cdb7cd7ee39e7a769878f56e2d6066f5ccd1d) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `safe-publish-latest`, `core-js`, `get-own-property-symbols`, `tape` [`1dd42cd`](https://github.com/inspect-js/has-symbols/commit/1dd42cd86183ed0c50f99b1062345c458babca91) +- [meta] create FUNDING.yml [`aa57a17`](https://github.com/inspect-js/has-symbols/commit/aa57a17b19708906d1927f821ea8e73394d84ca4) +- Only apps should have lockfiles [`a2d8bea`](https://github.com/inspect-js/has-symbols/commit/a2d8bea23a97d15c09eaf60f5b107fcf9a4d57aa) +- [Tests] use `npx aud` instead of `nsp` or `npm audit` with hoops [`9e96cb7`](https://github.com/inspect-js/has-symbols/commit/9e96cb783746cbed0c10ef78e599a8eaa7ebe193) +- [meta] add `funding` field [`a0b32cf`](https://github.com/inspect-js/has-symbols/commit/a0b32cf68e803f963c1639b6d47b0a9d6440bab0) +- [Dev Deps] update `safe-publish-latest` [`cb9f0a5`](https://github.com/inspect-js/has-symbols/commit/cb9f0a521a3a1790f1064d437edd33bb6c3d6af0) + +## v1.0.0 - 2016-09-19 + +### Commits + +- Tests. [`ecb6eb9`](https://github.com/inspect-js/has-symbols/commit/ecb6eb934e4883137f3f93b965ba5e0a98df430d) +- package.json [`88a337c`](https://github.com/inspect-js/has-symbols/commit/88a337cee0864a0da35f5d19e69ff0ef0150e46a) +- Initial commit [`42e1e55`](https://github.com/inspect-js/has-symbols/commit/42e1e5502536a2b8ac529c9443984acd14836b1c) +- Initial implementation. [`33f5cc6`](https://github.com/inspect-js/has-symbols/commit/33f5cc6cdff86e2194b081ee842bfdc63caf43fb) +- read me [`01f1170`](https://github.com/inspect-js/has-symbols/commit/01f1170188ff7cb1558aa297f6ba5b516c6d7b0c) diff --git a/node_modules/has-symbols/LICENSE b/node_modules/has-symbols/LICENSE new file mode 100644 index 0000000..df31cbf --- /dev/null +++ b/node_modules/has-symbols/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2016 Jordan Harband + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/has-symbols/README.md b/node_modules/has-symbols/README.md new file mode 100644 index 0000000..33905f0 --- /dev/null +++ b/node_modules/has-symbols/README.md @@ -0,0 +1,46 @@ +# has-symbols [![Version Badge][2]][1] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![dependency status][5]][6] +[![dev dependency status][7]][8] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][11]][1] + +Determine if the JS environment has Symbol support. Supports spec, or shams. + +## Example + +```js +var hasSymbols = require('has-symbols'); + +hasSymbols() === true; // if the environment has native Symbol support. Not polyfillable, not forgeable. + +var hasSymbolsKinda = require('has-symbols/shams'); +hasSymbolsKinda() === true; // if the environment has a Symbol sham that mostly follows the spec. +``` + +## Supported Symbol shams + - get-own-property-symbols [npm](https://www.npmjs.com/package/get-own-property-symbols) | [github](https://github.com/WebReflection/get-own-property-symbols) + - core-js [npm](https://www.npmjs.com/package/core-js) | [github](https://github.com/zloirock/core-js) + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +[1]: https://npmjs.org/package/has-symbols +[2]: https://versionbadg.es/inspect-js/has-symbols.svg +[5]: https://david-dm.org/inspect-js/has-symbols.svg +[6]: https://david-dm.org/inspect-js/has-symbols +[7]: https://david-dm.org/inspect-js/has-symbols/dev-status.svg +[8]: https://david-dm.org/inspect-js/has-symbols#info=devDependencies +[11]: https://nodei.co/npm/has-symbols.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/has-symbols.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/has-symbols.svg +[downloads-url]: https://npm-stat.com/charts.html?package=has-symbols +[codecov-image]: https://codecov.io/gh/inspect-js/has-symbols/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/inspect-js/has-symbols/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/has-symbols +[actions-url]: https://github.com/inspect-js/has-symbols/actions diff --git a/node_modules/has-symbols/index.d.ts b/node_modules/has-symbols/index.d.ts new file mode 100644 index 0000000..9b98595 --- /dev/null +++ b/node_modules/has-symbols/index.d.ts @@ -0,0 +1,3 @@ +declare function hasNativeSymbols(): boolean; + +export = hasNativeSymbols; \ No newline at end of file diff --git a/node_modules/has-symbols/index.js b/node_modules/has-symbols/index.js new file mode 100644 index 0000000..fa65265 --- /dev/null +++ b/node_modules/has-symbols/index.js @@ -0,0 +1,14 @@ +'use strict'; + +var origSymbol = typeof Symbol !== 'undefined' && Symbol; +var hasSymbolSham = require('./shams'); + +/** @type {import('.')} */ +module.exports = function hasNativeSymbols() { + if (typeof origSymbol !== 'function') { return false; } + if (typeof Symbol !== 'function') { return false; } + if (typeof origSymbol('foo') !== 'symbol') { return false; } + if (typeof Symbol('bar') !== 'symbol') { return false; } + + return hasSymbolSham(); +}; diff --git a/node_modules/has-symbols/package.json b/node_modules/has-symbols/package.json new file mode 100644 index 0000000..d835e20 --- /dev/null +++ b/node_modules/has-symbols/package.json @@ -0,0 +1,111 @@ +{ + "name": "has-symbols", + "version": "1.1.0", + "description": "Determine if the JS environment has Symbol support. Supports spec, or shams.", + "main": "index.js", + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "pretest": "npm run --silent lint", + "test": "npm run tests-only", + "posttest": "npx npm@'>=10.2' audit --production", + "tests-only": "npm run test:stock && npm run test:shams", + "test:stock": "nyc node test", + "test:staging": "nyc node --harmony --es-staging test", + "test:shams": "npm run --silent test:shams:getownpropertysymbols && npm run --silent test:shams:corejs", + "test:shams:corejs": "nyc node test/shams/core-js.js", + "test:shams:getownpropertysymbols": "nyc node test/shams/get-own-property-symbols.js", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc -p . && attw -P", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git://github.com/inspect-js/has-symbols.git" + }, + "keywords": [ + "Symbol", + "symbols", + "typeof", + "sham", + "polyfill", + "native", + "core-js", + "ES6" + ], + "author": { + "name": "Jordan Harband", + "email": "ljharb@gmail.com", + "url": "http://ljharb.codes" + }, + "contributors": [ + { + "name": "Jordan Harband", + "email": "ljharb@gmail.com", + "url": "http://ljharb.codes" + } + ], + "funding": { + "url": "https://github.com/sponsors/ljharb" + }, + "license": "MIT", + "bugs": { + "url": "https://github.com/ljharb/has-symbols/issues" + }, + "homepage": "https://github.com/ljharb/has-symbols#readme", + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.0", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.0", + "@types/core-js": "^2.5.8", + "@types/tape": "^5.6.5", + "auto-changelog": "^2.5.0", + "core-js": "^2.6.12", + "encoding": "^0.1.13", + "eslint": "=8.8.0", + "get-own-property-symbols": "^0.9.5", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "testling": { + "files": "test/index.js", + "browsers": [ + "iexplore/6.0..latest", + "firefox/3.0..6.0", + "firefox/15.0..latest", + "firefox/nightly", + "chrome/4.0..10.0", + "chrome/20.0..latest", + "chrome/canary", + "opera/10.0..latest", + "opera/next", + "safari/4.0..latest", + "ipad/6.0..latest", + "iphone/6.0..latest", + "android-browser/4.2" + ] + }, + "engines": { + "node": ">= 0.4" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows", + "types" + ] + } +} diff --git a/node_modules/has-symbols/shams.d.ts b/node_modules/has-symbols/shams.d.ts new file mode 100644 index 0000000..8d0bf24 --- /dev/null +++ b/node_modules/has-symbols/shams.d.ts @@ -0,0 +1,3 @@ +declare function hasSymbolShams(): boolean; + +export = hasSymbolShams; \ No newline at end of file diff --git a/node_modules/has-symbols/shams.js b/node_modules/has-symbols/shams.js new file mode 100644 index 0000000..f97b474 --- /dev/null +++ b/node_modules/has-symbols/shams.js @@ -0,0 +1,45 @@ +'use strict'; + +/** @type {import('./shams')} */ +/* eslint complexity: [2, 18], max-statements: [2, 33] */ +module.exports = function hasSymbols() { + if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; } + if (typeof Symbol.iterator === 'symbol') { return true; } + + /** @type {{ [k in symbol]?: unknown }} */ + var obj = {}; + var sym = Symbol('test'); + var symObj = Object(sym); + if (typeof sym === 'string') { return false; } + + if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; } + if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; } + + // temp disabled per https://github.com/ljharb/object.assign/issues/17 + // if (sym instanceof Symbol) { return false; } + // temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4 + // if (!(symObj instanceof Symbol)) { return false; } + + // if (typeof Symbol.prototype.toString !== 'function') { return false; } + // if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; } + + var symVal = 42; + obj[sym] = symVal; + for (var _ in obj) { return false; } // eslint-disable-line no-restricted-syntax, no-unreachable-loop + if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; } + + if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; } + + var syms = Object.getOwnPropertySymbols(obj); + if (syms.length !== 1 || syms[0] !== sym) { return false; } + + if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; } + + if (typeof Object.getOwnPropertyDescriptor === 'function') { + // eslint-disable-next-line no-extra-parens + var descriptor = /** @type {PropertyDescriptor} */ (Object.getOwnPropertyDescriptor(obj, sym)); + if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; } + } + + return true; +}; diff --git a/node_modules/has-symbols/test/index.js b/node_modules/has-symbols/test/index.js new file mode 100644 index 0000000..352129c --- /dev/null +++ b/node_modules/has-symbols/test/index.js @@ -0,0 +1,22 @@ +'use strict'; + +var test = require('tape'); +var hasSymbols = require('../'); +var runSymbolTests = require('./tests'); + +test('interface', function (t) { + t.equal(typeof hasSymbols, 'function', 'is a function'); + t.equal(typeof hasSymbols(), 'boolean', 'returns a boolean'); + t.end(); +}); + +test('Symbols are supported', { skip: !hasSymbols() }, function (t) { + runSymbolTests(t); + t.end(); +}); + +test('Symbols are not supported', { skip: hasSymbols() }, function (t) { + t.equal(typeof Symbol, 'undefined', 'global Symbol is undefined'); + t.equal(typeof Object.getOwnPropertySymbols, 'undefined', 'Object.getOwnPropertySymbols does not exist'); + t.end(); +}); diff --git a/node_modules/has-symbols/test/shams/core-js.js b/node_modules/has-symbols/test/shams/core-js.js new file mode 100644 index 0000000..1a29024 --- /dev/null +++ b/node_modules/has-symbols/test/shams/core-js.js @@ -0,0 +1,29 @@ +'use strict'; + +var test = require('tape'); + +if (typeof Symbol === 'function' && typeof Symbol() === 'symbol') { + test('has native Symbol support', function (t) { + t.equal(typeof Symbol, 'function'); + t.equal(typeof Symbol(), 'symbol'); + t.end(); + }); + // @ts-expect-error TS is stupid and doesn't know about top level return + return; +} + +var hasSymbols = require('../../shams'); + +test('polyfilled Symbols', function (t) { + /* eslint-disable global-require */ + t.equal(hasSymbols(), false, 'hasSymbols is false before polyfilling'); + require('core-js/fn/symbol'); + require('core-js/fn/symbol/to-string-tag'); + + require('../tests')(t); + + var hasSymbolsAfter = hasSymbols(); + t.equal(hasSymbolsAfter, true, 'hasSymbols is true after polyfilling'); + /* eslint-enable global-require */ + t.end(); +}); diff --git a/node_modules/has-symbols/test/shams/get-own-property-symbols.js b/node_modules/has-symbols/test/shams/get-own-property-symbols.js new file mode 100644 index 0000000..e0296f8 --- /dev/null +++ b/node_modules/has-symbols/test/shams/get-own-property-symbols.js @@ -0,0 +1,29 @@ +'use strict'; + +var test = require('tape'); + +if (typeof Symbol === 'function' && typeof Symbol() === 'symbol') { + test('has native Symbol support', function (t) { + t.equal(typeof Symbol, 'function'); + t.equal(typeof Symbol(), 'symbol'); + t.end(); + }); + // @ts-expect-error TS is stupid and doesn't know about top level return + return; +} + +var hasSymbols = require('../../shams'); + +test('polyfilled Symbols', function (t) { + /* eslint-disable global-require */ + t.equal(hasSymbols(), false, 'hasSymbols is false before polyfilling'); + + require('get-own-property-symbols'); + + require('../tests')(t); + + var hasSymbolsAfter = hasSymbols(); + t.equal(hasSymbolsAfter, true, 'hasSymbols is true after polyfilling'); + /* eslint-enable global-require */ + t.end(); +}); diff --git a/node_modules/has-symbols/test/tests.js b/node_modules/has-symbols/test/tests.js new file mode 100644 index 0000000..66a2cb8 --- /dev/null +++ b/node_modules/has-symbols/test/tests.js @@ -0,0 +1,58 @@ +'use strict'; + +/** @type {(t: import('tape').Test) => false | void} */ +// eslint-disable-next-line consistent-return +module.exports = function runSymbolTests(t) { + t.equal(typeof Symbol, 'function', 'global Symbol is a function'); + + if (typeof Symbol !== 'function') { return false; } + + t.notEqual(Symbol(), Symbol(), 'two symbols are not equal'); + + /* + t.equal( + Symbol.prototype.toString.call(Symbol('foo')), + Symbol.prototype.toString.call(Symbol('foo')), + 'two symbols with the same description stringify the same' + ); + */ + + /* + var foo = Symbol('foo'); + + t.notEqual( + String(foo), + String(Symbol('bar')), + 'two symbols with different descriptions do not stringify the same' + ); + */ + + t.equal(typeof Symbol.prototype.toString, 'function', 'Symbol#toString is a function'); + // t.equal(String(foo), Symbol.prototype.toString.call(foo), 'Symbol#toString equals String of the same symbol'); + + t.equal(typeof Object.getOwnPropertySymbols, 'function', 'Object.getOwnPropertySymbols is a function'); + + /** @type {{ [k in symbol]?: unknown }} */ + var obj = {}; + var sym = Symbol('test'); + var symObj = Object(sym); + t.notEqual(typeof sym, 'string', 'Symbol is not a string'); + t.equal(Object.prototype.toString.call(sym), '[object Symbol]', 'symbol primitive Object#toStrings properly'); + t.equal(Object.prototype.toString.call(symObj), '[object Symbol]', 'symbol primitive Object#toStrings properly'); + + var symVal = 42; + obj[sym] = symVal; + // eslint-disable-next-line no-restricted-syntax, no-unused-vars + for (var _ in obj) { t.fail('symbol property key was found in for..in of object'); } + + t.deepEqual(Object.keys(obj), [], 'no enumerable own keys on symbol-valued object'); + t.deepEqual(Object.getOwnPropertyNames(obj), [], 'no own names on symbol-valued object'); + t.deepEqual(Object.getOwnPropertySymbols(obj), [sym], 'one own symbol on symbol-valued object'); + t.equal(Object.prototype.propertyIsEnumerable.call(obj, sym), true, 'symbol is enumerable'); + t.deepEqual(Object.getOwnPropertyDescriptor(obj, sym), { + configurable: true, + enumerable: true, + value: 42, + writable: true + }, 'property descriptor is correct'); +}; diff --git a/node_modules/has-symbols/tsconfig.json b/node_modules/has-symbols/tsconfig.json new file mode 100644 index 0000000..ba99af4 --- /dev/null +++ b/node_modules/has-symbols/tsconfig.json @@ -0,0 +1,10 @@ +{ + "extends": "@ljharb/tsconfig", + "compilerOptions": { + "target": "ES2021", + "maxNodeModuleJsDepth": 0, + }, + "exclude": [ + "coverage" + ] +} diff --git a/node_modules/has-tostringtag/.eslintrc b/node_modules/has-tostringtag/.eslintrc new file mode 100644 index 0000000..3b5d9e9 --- /dev/null +++ b/node_modules/has-tostringtag/.eslintrc @@ -0,0 +1,5 @@ +{ + "root": true, + + "extends": "@ljharb", +} diff --git a/node_modules/has-tostringtag/.github/FUNDING.yml b/node_modules/has-tostringtag/.github/FUNDING.yml new file mode 100644 index 0000000..7a450e7 --- /dev/null +++ b/node_modules/has-tostringtag/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/has-tostringtag +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] diff --git a/node_modules/has-tostringtag/.nycrc b/node_modules/has-tostringtag/.nycrc new file mode 100644 index 0000000..1826526 --- /dev/null +++ b/node_modules/has-tostringtag/.nycrc @@ -0,0 +1,13 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "lines": 86, + "statements": 85.93, + "functions": 82.43, + "branches": 76.06, + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/has-tostringtag/CHANGELOG.md b/node_modules/has-tostringtag/CHANGELOG.md new file mode 100644 index 0000000..eb186ec --- /dev/null +++ b/node_modules/has-tostringtag/CHANGELOG.md @@ -0,0 +1,42 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.0.2](https://github.com/inspect-js/has-tostringtag/compare/v1.0.1...v1.0.2) - 2024-02-01 + +### Fixed + +- [Fix] move `has-symbols` back to prod deps [`#3`](https://github.com/inspect-js/has-tostringtag/issues/3) + +## [v1.0.1](https://github.com/inspect-js/has-tostringtag/compare/v1.0.0...v1.0.1) - 2024-02-01 + +### Commits + +- [patch] add types [`9276414`](https://github.com/inspect-js/has-tostringtag/commit/9276414b22fab3eeb234688841722c4be113201f) +- [meta] use `npmignore` to autogenerate an npmignore file [`5c0dcd1`](https://github.com/inspect-js/has-tostringtag/commit/5c0dcd1ff66419562a30d1fd88b966cc36bce5fc) +- [actions] reuse common workflows [`dee9509`](https://github.com/inspect-js/has-tostringtag/commit/dee950904ab5719b62cf8d73d2ac950b09093266) +- [actions] update codecov uploader [`b8cb3a0`](https://github.com/inspect-js/has-tostringtag/commit/b8cb3a0b8ffbb1593012c4c2daa45fb25642825d) +- [Tests] generate coverage [`be5b288`](https://github.com/inspect-js/has-tostringtag/commit/be5b28889e2735cdbcef387f84c2829995f2f05e) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `safe-publish-latest`, `tape` [`69a0827`](https://github.com/inspect-js/has-tostringtag/commit/69a0827974e9b877b2c75b70b057555da8f25a65) +- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `tape` [`4c9e210`](https://github.com/inspect-js/has-tostringtag/commit/4c9e210a5682f0557a3235d36b68ce809d7fb825) +- [actions] update rebase action to use reusable workflow [`ca8dcd3`](https://github.com/inspect-js/has-tostringtag/commit/ca8dcd3a6f3f5805d7e3fd461b654aedba0946e7) +- [Dev Deps] update `@ljharb/eslint-config`, `aud`, `npmignore`, `tape` [`07f3eaf`](https://github.com/inspect-js/has-tostringtag/commit/07f3eafa45dd98208c94479737da77f9a69b94c4) +- [Deps] update `has-symbols` [`999e009`](https://github.com/inspect-js/has-tostringtag/commit/999e0095a7d1749a58f55472ec8bf8108cdfdcf3) +- [Tests] remove staging tests since they fail on modern node [`9d9526b`](https://github.com/inspect-js/has-tostringtag/commit/9d9526b1dc1ca7f2292b52efda4c3d857b0e39bd) + +## v1.0.0 - 2021-08-05 + +### Commits + +- Tests [`6b6f573`](https://github.com/inspect-js/has-tostringtag/commit/6b6f5734dc2058badb300ff0783efdad95fe1a65) +- Initial commit [`2f8190e`](https://github.com/inspect-js/has-tostringtag/commit/2f8190e799fac32ba9b95a076c0255e01d7ce475) +- [meta] do not publish github action workflow files [`6e08cc4`](https://github.com/inspect-js/has-tostringtag/commit/6e08cc4e0fea7ec71ef66e70734b2af2c4a8b71b) +- readme [`94bed6c`](https://github.com/inspect-js/has-tostringtag/commit/94bed6c9560cbbfda034f8d6c260bb7b0db33c1a) +- npm init [`be67840`](https://github.com/inspect-js/has-tostringtag/commit/be67840ab92ee7adb98bcc65261975543f815fa5) +- Implementation [`c4914ec`](https://github.com/inspect-js/has-tostringtag/commit/c4914ecc51ddee692c85b471ae0a5d8123030fbf) +- [meta] use `auto-changelog` [`4aaf768`](https://github.com/inspect-js/has-tostringtag/commit/4aaf76895ae01d7b739f2b19f967ef2372506cd7) +- Only apps should have lockfiles [`bc4d99e`](https://github.com/inspect-js/has-tostringtag/commit/bc4d99e4bf494afbaa235c5f098df6e642edf724) +- [meta] add `safe-publish-latest` [`6523c05`](https://github.com/inspect-js/has-tostringtag/commit/6523c05c9b87140f3ae74c9daf91633dd9ff4e1f) diff --git a/node_modules/has-tostringtag/LICENSE b/node_modules/has-tostringtag/LICENSE new file mode 100644 index 0000000..7948bc0 --- /dev/null +++ b/node_modules/has-tostringtag/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2021 Inspect JS + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/has-tostringtag/README.md b/node_modules/has-tostringtag/README.md new file mode 100644 index 0000000..67a5e92 --- /dev/null +++ b/node_modules/has-tostringtag/README.md @@ -0,0 +1,46 @@ +# has-tostringtag [![Version Badge][2]][1] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![dependency status][5]][6] +[![dev dependency status][7]][8] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][11]][1] + +Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams. + +## Example + +```js +var hasSymbolToStringTag = require('has-tostringtag'); + +hasSymbolToStringTag() === true; // if the environment has native Symbol.toStringTag support. Not polyfillable, not forgeable. + +var hasSymbolToStringTagKinda = require('has-tostringtag/shams'); +hasSymbolToStringTagKinda() === true; // if the environment has a Symbol.toStringTag sham that mostly follows the spec. +``` + +## Supported Symbol shams + - get-own-property-symbols [npm](https://www.npmjs.com/package/get-own-property-symbols) | [github](https://github.com/WebReflection/get-own-property-symbols) + - core-js [npm](https://www.npmjs.com/package/core-js) | [github](https://github.com/zloirock/core-js) + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +[1]: https://npmjs.org/package/has-tostringtag +[2]: https://versionbadg.es/inspect-js/has-tostringtag.svg +[5]: https://david-dm.org/inspect-js/has-tostringtag.svg +[6]: https://david-dm.org/inspect-js/has-tostringtag +[7]: https://david-dm.org/inspect-js/has-tostringtag/dev-status.svg +[8]: https://david-dm.org/inspect-js/has-tostringtag#info=devDependencies +[11]: https://nodei.co/npm/has-tostringtag.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/has-tostringtag.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/has-tostringtag.svg +[downloads-url]: https://npm-stat.com/charts.html?package=has-tostringtag +[codecov-image]: https://codecov.io/gh/inspect-js/has-tostringtag/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/inspect-js/has-tostringtag/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/has-tostringtag +[actions-url]: https://github.com/inspect-js/has-tostringtag/actions diff --git a/node_modules/has-tostringtag/index.d.ts b/node_modules/has-tostringtag/index.d.ts new file mode 100644 index 0000000..a61bc60 --- /dev/null +++ b/node_modules/has-tostringtag/index.d.ts @@ -0,0 +1,3 @@ +declare function hasToStringTag(): boolean; + +export = hasToStringTag; diff --git a/node_modules/has-tostringtag/index.js b/node_modules/has-tostringtag/index.js new file mode 100644 index 0000000..77bfa00 --- /dev/null +++ b/node_modules/has-tostringtag/index.js @@ -0,0 +1,8 @@ +'use strict'; + +var hasSymbols = require('has-symbols'); + +/** @type {import('.')} */ +module.exports = function hasToStringTag() { + return hasSymbols() && typeof Symbol.toStringTag === 'symbol'; +}; diff --git a/node_modules/has-tostringtag/package.json b/node_modules/has-tostringtag/package.json new file mode 100644 index 0000000..e5b0300 --- /dev/null +++ b/node_modules/has-tostringtag/package.json @@ -0,0 +1,108 @@ +{ + "name": "has-tostringtag", + "version": "1.0.2", + "author": { + "name": "Jordan Harband", + "email": "ljharb@gmail.com", + "url": "http://ljharb.codes" + }, + "funding": { + "url": "https://github.com/sponsors/ljharb" + }, + "contributors": [ + { + "name": "Jordan Harband", + "email": "ljharb@gmail.com", + "url": "http://ljharb.codes" + } + ], + "description": "Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.", + "license": "MIT", + "main": "index.js", + "types": "./index.d.ts", + "exports": { + ".": [ + { + "types": "./index.d.ts", + "default": "./index.js" + }, + "./index.js" + ], + "./shams": [ + { + "types": "./shams.d.ts", + "default": "./shams.js" + }, + "./shams.js" + ], + "./package.json": "./package.json" + }, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "pretest": "npm run --silent lint", + "test": "npm run tests-only", + "posttest": "aud --production", + "tests-only": "npm run test:stock && npm run test:shams", + "test:stock": "nyc node test", + "test:staging": "nyc node --harmony --es-staging test", + "test:shams": "npm run --silent test:shams:getownpropertysymbols && npm run --silent test:shams:corejs", + "test:shams:corejs": "nyc node test/shams/core-js.js", + "test:shams:getownpropertysymbols": "nyc node test/shams/get-own-property-symbols.js", + "lint": "eslint --ext=js,mjs .", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/inspect-js/has-tostringtag.git" + }, + "bugs": { + "url": "https://github.com/inspect-js/has-tostringtag/issues" + }, + "homepage": "https://github.com/inspect-js/has-tostringtag#readme", + "keywords": [ + "javascript", + "ecmascript", + "symbol", + "symbols", + "tostringtag", + "Symbol.toStringTag" + ], + "devDependencies": { + "@ljharb/eslint-config": "^21.1.0", + "@types/has-symbols": "^1.0.2", + "@types/tape": "^5.6.4", + "aud": "^2.0.4", + "auto-changelog": "^2.4.0", + "core-js": "^2.6.12", + "eslint": "=8.8.0", + "get-own-property-symbols": "^0.9.5", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.7.4", + "typescript": "next" + }, + "engines": { + "node": ">= 0.4" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "dependencies": { + "has-symbols": "^1.0.3" + } +} diff --git a/node_modules/has-tostringtag/shams.d.ts b/node_modules/has-tostringtag/shams.d.ts new file mode 100644 index 0000000..ea4aeec --- /dev/null +++ b/node_modules/has-tostringtag/shams.d.ts @@ -0,0 +1,3 @@ +declare function hasToStringTagShams(): boolean; + +export = hasToStringTagShams; diff --git a/node_modules/has-tostringtag/shams.js b/node_modules/has-tostringtag/shams.js new file mode 100644 index 0000000..809580d --- /dev/null +++ b/node_modules/has-tostringtag/shams.js @@ -0,0 +1,8 @@ +'use strict'; + +var hasSymbols = require('has-symbols/shams'); + +/** @type {import('.')} */ +module.exports = function hasToStringTagShams() { + return hasSymbols() && !!Symbol.toStringTag; +}; diff --git a/node_modules/has-tostringtag/test/index.js b/node_modules/has-tostringtag/test/index.js new file mode 100644 index 0000000..0679afd --- /dev/null +++ b/node_modules/has-tostringtag/test/index.js @@ -0,0 +1,21 @@ +'use strict'; + +var test = require('tape'); +var hasSymbolToStringTag = require('../'); +var runSymbolTests = require('./tests'); + +test('interface', function (t) { + t.equal(typeof hasSymbolToStringTag, 'function', 'is a function'); + t.equal(typeof hasSymbolToStringTag(), 'boolean', 'returns a boolean'); + t.end(); +}); + +test('Symbol.toStringTag exists', { skip: !hasSymbolToStringTag() }, function (t) { + runSymbolTests(t); + t.end(); +}); + +test('Symbol.toStringTag does not exist', { skip: hasSymbolToStringTag() }, function (t) { + t.equal(typeof Symbol === 'undefined' ? 'undefined' : typeof Symbol.toStringTag, 'undefined', 'global Symbol.toStringTag is undefined'); + t.end(); +}); diff --git a/node_modules/has-tostringtag/test/shams/core-js.js b/node_modules/has-tostringtag/test/shams/core-js.js new file mode 100644 index 0000000..7ab214d --- /dev/null +++ b/node_modules/has-tostringtag/test/shams/core-js.js @@ -0,0 +1,31 @@ +'use strict'; + +var test = require('tape'); + +if (typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol') { + test('has native Symbol.toStringTag support', function (t) { + t.equal(typeof Symbol, 'function'); + t.equal(typeof Symbol.toStringTag, 'symbol'); + t.end(); + }); + // @ts-expect-error CJS has top-level return + return; +} + +var hasSymbolToStringTag = require('../../shams'); + +test('polyfilled Symbols', function (t) { + /* eslint-disable global-require */ + t.equal(hasSymbolToStringTag(), false, 'hasSymbolToStringTag is false before polyfilling'); + // @ts-expect-error no types defined + require('core-js/fn/symbol'); + // @ts-expect-error no types defined + require('core-js/fn/symbol/to-string-tag'); + + require('../tests')(t); + + var hasToStringTagAfter = hasSymbolToStringTag(); + t.equal(hasToStringTagAfter, true, 'hasSymbolToStringTag is true after polyfilling'); + /* eslint-enable global-require */ + t.end(); +}); diff --git a/node_modules/has-tostringtag/test/shams/get-own-property-symbols.js b/node_modules/has-tostringtag/test/shams/get-own-property-symbols.js new file mode 100644 index 0000000..c8af44c --- /dev/null +++ b/node_modules/has-tostringtag/test/shams/get-own-property-symbols.js @@ -0,0 +1,30 @@ +'use strict'; + +var test = require('tape'); + +if (typeof Symbol === 'function' && typeof Symbol() === 'symbol') { + test('has native Symbol support', function (t) { + t.equal(typeof Symbol, 'function'); + t.equal(typeof Symbol(), 'symbol'); + t.end(); + }); + // @ts-expect-error CJS has top-level return + return; +} + +var hasSymbolToStringTag = require('../../shams'); + +test('polyfilled Symbols', function (t) { + /* eslint-disable global-require */ + t.equal(hasSymbolToStringTag(), false, 'hasSymbolToStringTag is false before polyfilling'); + + // @ts-expect-error no types defined + require('get-own-property-symbols'); + + require('../tests')(t); + + var hasToStringTagAfter = hasSymbolToStringTag(); + t.equal(hasToStringTagAfter, true, 'hasSymbolToStringTag is true after polyfilling'); + /* eslint-enable global-require */ + t.end(); +}); diff --git a/node_modules/has-tostringtag/test/tests.js b/node_modules/has-tostringtag/test/tests.js new file mode 100644 index 0000000..2aa0d48 --- /dev/null +++ b/node_modules/has-tostringtag/test/tests.js @@ -0,0 +1,15 @@ +'use strict'; + +// eslint-disable-next-line consistent-return +module.exports = /** @type {(t: import('tape').Test) => void | false} */ function runSymbolTests(t) { + t.equal(typeof Symbol, 'function', 'global Symbol is a function'); + t.ok(Symbol.toStringTag, 'Symbol.toStringTag exists'); + + if (typeof Symbol !== 'function' || !Symbol.toStringTag) { return false; } + + /** @type {{ [Symbol.toStringTag]?: 'test'}} */ + var obj = {}; + obj[Symbol.toStringTag] = 'test'; + + t.equal(Object.prototype.toString.call(obj), '[object test]'); +}; diff --git a/node_modules/has-tostringtag/tsconfig.json b/node_modules/has-tostringtag/tsconfig.json new file mode 100644 index 0000000..2002ce5 --- /dev/null +++ b/node_modules/has-tostringtag/tsconfig.json @@ -0,0 +1,49 @@ +{ + "compilerOptions": { + /* Visit https://aka.ms/tsconfig to read more about this file */ + + /* Projects */ + + /* Language and Environment */ + "target": "ESNext", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */ + // "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */ + // "noLib": true, /* Disable including any library files, including the default lib.d.ts. */ + "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */ + // "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */ + + /* Modules */ + "module": "commonjs", /* Specify what module code is generated. */ + // "rootDir": "./", /* Specify the root folder within your source files. */ + // "moduleResolution": "node10", /* Specify how TypeScript looks up a file from a given module specifier. */ + // "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */ + // "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */ + // "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */ + "typeRoots": ["types"], /* Specify multiple folders that act like './node_modules/@types'. */ + "resolveJsonModule": true, /* Enable importing .json files. */ + // "allowArbitraryExtensions": true, /* Enable importing files with any extension, provided a declaration file is present. */ + + /* JavaScript Support */ + "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */ + "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */ + "maxNodeModuleJsDepth": 0, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */ + + /* Emit */ + "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */ + "declarationMap": true, /* Create sourcemaps for d.ts files. */ + "noEmit": true, /* Disable emitting files from a compilation. */ + + /* Interop Constraints */ + "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */ + "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */ + "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */ + + /* Type Checking */ + "strict": true, /* Enable all strict type-checking options. */ + + /* Completeness */ + //"skipLibCheck": true /* Skip type checking all .d.ts files. */ + }, + "exclude": [ + "coverage" + ] +} diff --git a/node_modules/hasown/.eslintrc b/node_modules/hasown/.eslintrc new file mode 100644 index 0000000..3b5d9e9 --- /dev/null +++ b/node_modules/hasown/.eslintrc @@ -0,0 +1,5 @@ +{ + "root": true, + + "extends": "@ljharb", +} diff --git a/node_modules/hasown/.github/FUNDING.yml b/node_modules/hasown/.github/FUNDING.yml new file mode 100644 index 0000000..d68c8b7 --- /dev/null +++ b/node_modules/hasown/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/hasown +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with a single custom sponsorship URL diff --git a/node_modules/hasown/.nycrc b/node_modules/hasown/.nycrc new file mode 100644 index 0000000..1826526 --- /dev/null +++ b/node_modules/hasown/.nycrc @@ -0,0 +1,13 @@ +{ + "all": true, + "check-coverage": false, + "reporter": ["text-summary", "text", "html", "json"], + "lines": 86, + "statements": 85.93, + "functions": 82.43, + "branches": 76.06, + "exclude": [ + "coverage", + "test" + ] +} diff --git a/node_modules/hasown/CHANGELOG.md b/node_modules/hasown/CHANGELOG.md new file mode 100644 index 0000000..2b0a980 --- /dev/null +++ b/node_modules/hasown/CHANGELOG.md @@ -0,0 +1,40 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v2.0.2](https://github.com/inspect-js/hasOwn/compare/v2.0.1...v2.0.2) - 2024-03-10 + +### Commits + +- [types] use shared config [`68e9d4d`](https://github.com/inspect-js/hasOwn/commit/68e9d4dab6facb4f05f02c6baea94a3f2a4e44b2) +- [actions] remove redundant finisher; use reusable workflow [`241a68e`](https://github.com/inspect-js/hasOwn/commit/241a68e13ea1fe52bec5ba7f74144befc31fae7b) +- [Tests] increase coverage [`4125c0d`](https://github.com/inspect-js/hasOwn/commit/4125c0d6121db56ae30e38346dfb0c000b04f0a7) +- [Tests] skip `npm ls` in old node due to TS [`01b9282`](https://github.com/inspect-js/hasOwn/commit/01b92822f9971dea031eafdd14767df41d61c202) +- [types] improve predicate type [`d340f85`](https://github.com/inspect-js/hasOwn/commit/d340f85ce02e286ef61096cbbb6697081d40a12b) +- [Dev Deps] update `tape` [`70089fc`](https://github.com/inspect-js/hasOwn/commit/70089fcf544e64acc024cbe60f5a9b00acad86de) +- [Tests] use `@arethetypeswrong/cli` [`50b272c`](https://github.com/inspect-js/hasOwn/commit/50b272c829f40d053a3dd91c9796e0ac0b2af084) + +## [v2.0.1](https://github.com/inspect-js/hasOwn/compare/v2.0.0...v2.0.1) - 2024-02-10 + +### Commits + +- [types] use a handwritten d.ts file; fix exported type [`012b989`](https://github.com/inspect-js/hasOwn/commit/012b9898ccf91dc441e2ebf594ff70270a5fda58) +- [Dev Deps] update `@types/function-bind`, `@types/mock-property`, `@types/tape`, `aud`, `mock-property`, `npmignore`, `tape`, `typescript` [`977a56f`](https://github.com/inspect-js/hasOwn/commit/977a56f51a1f8b20566f3c471612137894644025) +- [meta] add `sideEffects` flag [`3a60b7b`](https://github.com/inspect-js/hasOwn/commit/3a60b7bf42fccd8c605e5f145a6fcc83b13cb46f) + +## [v2.0.0](https://github.com/inspect-js/hasOwn/compare/v1.0.1...v2.0.0) - 2023-10-19 + +### Commits + +- revamped implementation, tests, readme [`72bf8b3`](https://github.com/inspect-js/hasOwn/commit/72bf8b338e77a638f0a290c63ffaed18339c36b4) +- [meta] revamp package.json [`079775f`](https://github.com/inspect-js/hasOwn/commit/079775fb1ec72c1c6334069593617a0be3847458) +- Only apps should have lockfiles [`6640e23`](https://github.com/inspect-js/hasOwn/commit/6640e233d1bb8b65260880f90787637db157d215) + +## v1.0.1 - 2023-10-10 + +### Commits + +- Initial commit [`8dbfde6`](https://github.com/inspect-js/hasOwn/commit/8dbfde6e8fb0ebb076fab38d138f2984eb340a62) diff --git a/node_modules/hasown/LICENSE b/node_modules/hasown/LICENSE new file mode 100644 index 0000000..0314929 --- /dev/null +++ b/node_modules/hasown/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) Jordan Harband and contributors + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/hasown/README.md b/node_modules/hasown/README.md new file mode 100644 index 0000000..f759b8a --- /dev/null +++ b/node_modules/hasown/README.md @@ -0,0 +1,40 @@ +# hasown [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +A robust, ES3 compatible, "has own property" predicate. + +## Example + +```js +const assert = require('assert'); +const hasOwn = require('hasown'); + +assert.equal(hasOwn({}, 'toString'), false); +assert.equal(hasOwn([], 'length'), true); +assert.equal(hasOwn({ a: 42 }, 'a'), true); +``` + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +[package-url]: https://npmjs.org/package/hasown +[npm-version-svg]: https://versionbadg.es/inspect-js/hasown.svg +[deps-svg]: https://david-dm.org/inspect-js/hasOwn.svg +[deps-url]: https://david-dm.org/inspect-js/hasOwn +[dev-deps-svg]: https://david-dm.org/inspect-js/hasOwn/dev-status.svg +[dev-deps-url]: https://david-dm.org/inspect-js/hasOwn#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/hasown.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/hasown.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/hasown.svg +[downloads-url]: https://npm-stat.com/charts.html?package=hasown +[codecov-image]: https://codecov.io/gh/inspect-js/hasOwn/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/inspect-js/hasOwn/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/inspect-js/hasOwn +[actions-url]: https://github.com/inspect-js/hasOwn/actions diff --git a/node_modules/hasown/index.d.ts b/node_modules/hasown/index.d.ts new file mode 100644 index 0000000..aafdf3b --- /dev/null +++ b/node_modules/hasown/index.d.ts @@ -0,0 +1,3 @@ +declare function hasOwn(o: O, p: K): o is O & Record; + +export = hasOwn; diff --git a/node_modules/hasown/index.js b/node_modules/hasown/index.js new file mode 100644 index 0000000..34e6059 --- /dev/null +++ b/node_modules/hasown/index.js @@ -0,0 +1,8 @@ +'use strict'; + +var call = Function.prototype.call; +var $hasOwn = Object.prototype.hasOwnProperty; +var bind = require('function-bind'); + +/** @type {import('.')} */ +module.exports = bind.call(call, $hasOwn); diff --git a/node_modules/hasown/package.json b/node_modules/hasown/package.json new file mode 100644 index 0000000..8502e13 --- /dev/null +++ b/node_modules/hasown/package.json @@ -0,0 +1,92 @@ +{ + "name": "hasown", + "version": "2.0.2", + "description": "A robust, ES3 compatible, \"has own property\" predicate.", + "main": "index.js", + "exports": { + ".": "./index.js", + "./package.json": "./package.json" + }, + "types": "index.d.ts", + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublish": "not-in-publish || npm run prepublishOnly", + "prepublishOnly": "safe-publish-latest", + "prelint": "evalmd README.md", + "lint": "eslint --ext=js,mjs .", + "postlint": "npm run tsc", + "pretest": "npm run lint", + "tsc": "tsc -p .", + "posttsc": "attw -P", + "tests-only": "nyc tape 'test/**/*.js'", + "test": "npm run tests-only", + "posttest": "aud --production", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/inspect-js/hasOwn.git" + }, + "keywords": [ + "has", + "hasOwnProperty", + "hasOwn", + "has-own", + "own", + "has", + "property", + "in", + "javascript", + "ecmascript" + ], + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/inspect-js/hasOwn/issues" + }, + "homepage": "https://github.com/inspect-js/hasOwn#readme", + "dependencies": { + "function-bind": "^1.1.2" + }, + "devDependencies": { + "@arethetypeswrong/cli": "^0.15.1", + "@ljharb/eslint-config": "^21.1.0", + "@ljharb/tsconfig": "^0.2.0", + "@types/function-bind": "^1.1.10", + "@types/mock-property": "^1.0.2", + "@types/tape": "^5.6.4", + "aud": "^2.0.4", + "auto-changelog": "^2.4.0", + "eslint": "=8.8.0", + "evalmd": "^0.0.19", + "in-publish": "^2.0.1", + "mock-property": "^1.0.3", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "safe-publish-latest": "^2.0.0", + "tape": "^5.7.5", + "typescript": "next" + }, + "engines": { + "node": ">= 0.4" + }, + "testling": { + "files": "test/index.js" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows", + "test" + ] + } +} diff --git a/node_modules/hasown/tsconfig.json b/node_modules/hasown/tsconfig.json new file mode 100644 index 0000000..0930c56 --- /dev/null +++ b/node_modules/hasown/tsconfig.json @@ -0,0 +1,6 @@ +{ + "extends": "@ljharb/tsconfig", + "exclude": [ + "coverage", + ], +} diff --git a/node_modules/math-intrinsics/.eslintrc b/node_modules/math-intrinsics/.eslintrc new file mode 100644 index 0000000..d90a1bc --- /dev/null +++ b/node_modules/math-intrinsics/.eslintrc @@ -0,0 +1,16 @@ +{ + "root": true, + + "extends": "@ljharb", + + "rules": { + "eqeqeq": ["error", "allow-null"], + "id-length": "off", + "new-cap": ["error", { + "capIsNewExceptions": [ + "RequireObjectCoercible", + "ToObject", + ], + }], + }, +} diff --git a/node_modules/math-intrinsics/.github/FUNDING.yml b/node_modules/math-intrinsics/.github/FUNDING.yml new file mode 100644 index 0000000..868f4ff --- /dev/null +++ b/node_modules/math-intrinsics/.github/FUNDING.yml @@ -0,0 +1,12 @@ +# These are supported funding model platforms + +github: [ljharb] +patreon: # Replace with a single Patreon username +open_collective: # Replace with a single Open Collective username +ko_fi: # Replace with a single Ko-fi username +tidelift: npm/math-intrinsics +community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry +liberapay: # Replace with a single Liberapay username +issuehunt: # Replace with a single IssueHunt username +otechie: # Replace with a single Otechie username +custom: # Replace with a single custom sponsorship URL diff --git a/node_modules/math-intrinsics/CHANGELOG.md b/node_modules/math-intrinsics/CHANGELOG.md new file mode 100644 index 0000000..9cf48f5 --- /dev/null +++ b/node_modules/math-intrinsics/CHANGELOG.md @@ -0,0 +1,24 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [v1.1.0](https://github.com/es-shims/math-intrinsics/compare/v1.0.0...v1.1.0) - 2024-12-18 + +### Commits + +- [New] add `round` [`7cfb044`](https://github.com/es-shims/math-intrinsics/commit/7cfb04460c0fbdf1ca101eecbac3f59d11994130) +- [Tests] add attw [`e96be8f`](https://github.com/es-shims/math-intrinsics/commit/e96be8fbf58449eafe976446a0470e6ea561ad8d) +- [Dev Deps] update `@types/tape` [`30d0023`](https://github.com/es-shims/math-intrinsics/commit/30d00234ce8a3fa0094a61cd55d6686eb91e36ec) + +## v1.0.0 - 2024-12-11 + +### Commits + +- Initial implementation, tests, readme, types [`b898caa`](https://github.com/es-shims/math-intrinsics/commit/b898caae94e9994a94a42b8740f7bbcfd0a868fe) +- Initial commit [`02745b0`](https://github.com/es-shims/math-intrinsics/commit/02745b03a62255af8a332771987b55d127538d9c) +- [New] add `constants/maxArrayLength`, `mod` [`b978178`](https://github.com/es-shims/math-intrinsics/commit/b978178a57685bd23ed1c7efe2137f3784f5fcc5) +- npm init [`a39fc57`](https://github.com/es-shims/math-intrinsics/commit/a39fc57e5639a645d0bd52a0dc56202480223be2) +- Only apps should have lockfiles [`9451580`](https://github.com/es-shims/math-intrinsics/commit/94515800fb34db4f3cc7e99290042d45609ac7bd) diff --git a/node_modules/math-intrinsics/LICENSE b/node_modules/math-intrinsics/LICENSE new file mode 100644 index 0000000..34995e7 --- /dev/null +++ b/node_modules/math-intrinsics/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 ECMAScript Shims + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/math-intrinsics/README.md b/node_modules/math-intrinsics/README.md new file mode 100644 index 0000000..4a66dcf --- /dev/null +++ b/node_modules/math-intrinsics/README.md @@ -0,0 +1,50 @@ +# math-intrinsics [![Version Badge][npm-version-svg]][package-url] + +[![github actions][actions-image]][actions-url] +[![coverage][codecov-image]][codecov-url] +[![License][license-image]][license-url] +[![Downloads][downloads-image]][downloads-url] + +[![npm badge][npm-badge-png]][package-url] + +ES Math-related intrinsics and helpers, robustly cached. + + - `abs` + - `floor` + - `isFinite` + - `isInteger` + - `isNaN` + - `isNegativeZero` + - `max` + - `min` + - `mod` + - `pow` + - `round` + - `sign` + - `constants/maxArrayLength` + - `constants/maxSafeInteger` + - `constants/maxValue` + + +## Tests +Simply clone the repo, `npm install`, and run `npm test` + +## Security + +Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report. + +[package-url]: https://npmjs.org/package/math-intrinsics +[npm-version-svg]: https://versionbadg.es/es-shims/math-intrinsics.svg +[deps-svg]: https://david-dm.org/es-shims/math-intrinsics.svg +[deps-url]: https://david-dm.org/es-shims/math-intrinsics +[dev-deps-svg]: https://david-dm.org/es-shims/math-intrinsics/dev-status.svg +[dev-deps-url]: https://david-dm.org/es-shims/math-intrinsics#info=devDependencies +[npm-badge-png]: https://nodei.co/npm/math-intrinsics.png?downloads=true&stars=true +[license-image]: https://img.shields.io/npm/l/math-intrinsics.svg +[license-url]: LICENSE +[downloads-image]: https://img.shields.io/npm/dm/es-object.svg +[downloads-url]: https://npm-stat.com/charts.html?package=math-intrinsics +[codecov-image]: https://codecov.io/gh/es-shims/math-intrinsics/branch/main/graphs/badge.svg +[codecov-url]: https://app.codecov.io/gh/es-shims/math-intrinsics/ +[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/math-intrinsics +[actions-url]: https://github.com/es-shims/math-intrinsics/actions diff --git a/node_modules/math-intrinsics/abs.d.ts b/node_modules/math-intrinsics/abs.d.ts new file mode 100644 index 0000000..14ad9c6 --- /dev/null +++ b/node_modules/math-intrinsics/abs.d.ts @@ -0,0 +1 @@ +export = Math.abs; \ No newline at end of file diff --git a/node_modules/math-intrinsics/abs.js b/node_modules/math-intrinsics/abs.js new file mode 100644 index 0000000..a751424 --- /dev/null +++ b/node_modules/math-intrinsics/abs.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./abs')} */ +module.exports = Math.abs; diff --git a/node_modules/math-intrinsics/constants/maxArrayLength.d.ts b/node_modules/math-intrinsics/constants/maxArrayLength.d.ts new file mode 100644 index 0000000..b92d46b --- /dev/null +++ b/node_modules/math-intrinsics/constants/maxArrayLength.d.ts @@ -0,0 +1,3 @@ +declare const MAX_ARRAY_LENGTH: 4294967295; + +export = MAX_ARRAY_LENGTH; \ No newline at end of file diff --git a/node_modules/math-intrinsics/constants/maxArrayLength.js b/node_modules/math-intrinsics/constants/maxArrayLength.js new file mode 100644 index 0000000..cfc6aff --- /dev/null +++ b/node_modules/math-intrinsics/constants/maxArrayLength.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./maxArrayLength')} */ +module.exports = 4294967295; // Math.pow(2, 32) - 1; diff --git a/node_modules/math-intrinsics/constants/maxSafeInteger.d.ts b/node_modules/math-intrinsics/constants/maxSafeInteger.d.ts new file mode 100644 index 0000000..fee3f62 --- /dev/null +++ b/node_modules/math-intrinsics/constants/maxSafeInteger.d.ts @@ -0,0 +1,3 @@ +declare const MAX_SAFE_INTEGER: 9007199254740991; + +export = MAX_SAFE_INTEGER; \ No newline at end of file diff --git a/node_modules/math-intrinsics/constants/maxSafeInteger.js b/node_modules/math-intrinsics/constants/maxSafeInteger.js new file mode 100644 index 0000000..b568ad3 --- /dev/null +++ b/node_modules/math-intrinsics/constants/maxSafeInteger.js @@ -0,0 +1,5 @@ +'use strict'; + +/** @type {import('./maxSafeInteger')} */ +// eslint-disable-next-line no-extra-parens +module.exports = /** @type {import('./maxSafeInteger')} */ (Number.MAX_SAFE_INTEGER) || 9007199254740991; // Math.pow(2, 53) - 1; diff --git a/node_modules/math-intrinsics/constants/maxValue.d.ts b/node_modules/math-intrinsics/constants/maxValue.d.ts new file mode 100644 index 0000000..292cb82 --- /dev/null +++ b/node_modules/math-intrinsics/constants/maxValue.d.ts @@ -0,0 +1,3 @@ +declare const MAX_VALUE: 1.7976931348623157e+308; + +export = MAX_VALUE; diff --git a/node_modules/math-intrinsics/constants/maxValue.js b/node_modules/math-intrinsics/constants/maxValue.js new file mode 100644 index 0000000..a2202dc --- /dev/null +++ b/node_modules/math-intrinsics/constants/maxValue.js @@ -0,0 +1,5 @@ +'use strict'; + +/** @type {import('./maxValue')} */ +// eslint-disable-next-line no-extra-parens +module.exports = /** @type {import('./maxValue')} */ (Number.MAX_VALUE) || 1.7976931348623157e+308; diff --git a/node_modules/math-intrinsics/floor.d.ts b/node_modules/math-intrinsics/floor.d.ts new file mode 100644 index 0000000..9265236 --- /dev/null +++ b/node_modules/math-intrinsics/floor.d.ts @@ -0,0 +1 @@ +export = Math.floor; \ No newline at end of file diff --git a/node_modules/math-intrinsics/floor.js b/node_modules/math-intrinsics/floor.js new file mode 100644 index 0000000..ab0e5d7 --- /dev/null +++ b/node_modules/math-intrinsics/floor.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./floor')} */ +module.exports = Math.floor; diff --git a/node_modules/math-intrinsics/isFinite.d.ts b/node_modules/math-intrinsics/isFinite.d.ts new file mode 100644 index 0000000..6daae33 --- /dev/null +++ b/node_modules/math-intrinsics/isFinite.d.ts @@ -0,0 +1,3 @@ +declare function isFinite(x: unknown): x is number | bigint; + +export = isFinite; \ No newline at end of file diff --git a/node_modules/math-intrinsics/isFinite.js b/node_modules/math-intrinsics/isFinite.js new file mode 100644 index 0000000..b201a5a --- /dev/null +++ b/node_modules/math-intrinsics/isFinite.js @@ -0,0 +1,12 @@ +'use strict'; + +var $isNaN = require('./isNaN'); + +/** @type {import('./isFinite')} */ +module.exports = function isFinite(x) { + return (typeof x === 'number' || typeof x === 'bigint') + && !$isNaN(x) + && x !== Infinity + && x !== -Infinity; +}; + diff --git a/node_modules/math-intrinsics/isInteger.d.ts b/node_modules/math-intrinsics/isInteger.d.ts new file mode 100644 index 0000000..13935a8 --- /dev/null +++ b/node_modules/math-intrinsics/isInteger.d.ts @@ -0,0 +1,3 @@ +declare function isInteger(argument: unknown): argument is number; + +export = isInteger; \ No newline at end of file diff --git a/node_modules/math-intrinsics/isInteger.js b/node_modules/math-intrinsics/isInteger.js new file mode 100644 index 0000000..4b1b9a5 --- /dev/null +++ b/node_modules/math-intrinsics/isInteger.js @@ -0,0 +1,16 @@ +'use strict'; + +var $abs = require('./abs'); +var $floor = require('./floor'); + +var $isNaN = require('./isNaN'); +var $isFinite = require('./isFinite'); + +/** @type {import('./isInteger')} */ +module.exports = function isInteger(argument) { + if (typeof argument !== 'number' || $isNaN(argument) || !$isFinite(argument)) { + return false; + } + var absValue = $abs(argument); + return $floor(absValue) === absValue; +}; diff --git a/node_modules/math-intrinsics/isNaN.d.ts b/node_modules/math-intrinsics/isNaN.d.ts new file mode 100644 index 0000000..c1d4c55 --- /dev/null +++ b/node_modules/math-intrinsics/isNaN.d.ts @@ -0,0 +1 @@ +export = Number.isNaN; \ No newline at end of file diff --git a/node_modules/math-intrinsics/isNaN.js b/node_modules/math-intrinsics/isNaN.js new file mode 100644 index 0000000..e36475c --- /dev/null +++ b/node_modules/math-intrinsics/isNaN.js @@ -0,0 +1,6 @@ +'use strict'; + +/** @type {import('./isNaN')} */ +module.exports = Number.isNaN || function isNaN(a) { + return a !== a; +}; diff --git a/node_modules/math-intrinsics/isNegativeZero.d.ts b/node_modules/math-intrinsics/isNegativeZero.d.ts new file mode 100644 index 0000000..7ad8819 --- /dev/null +++ b/node_modules/math-intrinsics/isNegativeZero.d.ts @@ -0,0 +1,3 @@ +declare function isNegativeZero(x: unknown): boolean; + +export = isNegativeZero; \ No newline at end of file diff --git a/node_modules/math-intrinsics/isNegativeZero.js b/node_modules/math-intrinsics/isNegativeZero.js new file mode 100644 index 0000000..b69adcc --- /dev/null +++ b/node_modules/math-intrinsics/isNegativeZero.js @@ -0,0 +1,6 @@ +'use strict'; + +/** @type {import('./isNegativeZero')} */ +module.exports = function isNegativeZero(x) { + return x === 0 && 1 / x === 1 / -0; +}; diff --git a/node_modules/math-intrinsics/max.d.ts b/node_modules/math-intrinsics/max.d.ts new file mode 100644 index 0000000..ad6f43e --- /dev/null +++ b/node_modules/math-intrinsics/max.d.ts @@ -0,0 +1 @@ +export = Math.max; \ No newline at end of file diff --git a/node_modules/math-intrinsics/max.js b/node_modules/math-intrinsics/max.js new file mode 100644 index 0000000..edb55df --- /dev/null +++ b/node_modules/math-intrinsics/max.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./max')} */ +module.exports = Math.max; diff --git a/node_modules/math-intrinsics/min.d.ts b/node_modules/math-intrinsics/min.d.ts new file mode 100644 index 0000000..fd90f2d --- /dev/null +++ b/node_modules/math-intrinsics/min.d.ts @@ -0,0 +1 @@ +export = Math.min; \ No newline at end of file diff --git a/node_modules/math-intrinsics/min.js b/node_modules/math-intrinsics/min.js new file mode 100644 index 0000000..5a4a7c7 --- /dev/null +++ b/node_modules/math-intrinsics/min.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./min')} */ +module.exports = Math.min; diff --git a/node_modules/math-intrinsics/mod.d.ts b/node_modules/math-intrinsics/mod.d.ts new file mode 100644 index 0000000..549dbd4 --- /dev/null +++ b/node_modules/math-intrinsics/mod.d.ts @@ -0,0 +1,3 @@ +declare function mod(number: number, modulo: number): number; + +export = mod; \ No newline at end of file diff --git a/node_modules/math-intrinsics/mod.js b/node_modules/math-intrinsics/mod.js new file mode 100644 index 0000000..4a98362 --- /dev/null +++ b/node_modules/math-intrinsics/mod.js @@ -0,0 +1,9 @@ +'use strict'; + +var $floor = require('./floor'); + +/** @type {import('./mod')} */ +module.exports = function mod(number, modulo) { + var remain = number % modulo; + return $floor(remain >= 0 ? remain : remain + modulo); +}; diff --git a/node_modules/math-intrinsics/package.json b/node_modules/math-intrinsics/package.json new file mode 100644 index 0000000..0676273 --- /dev/null +++ b/node_modules/math-intrinsics/package.json @@ -0,0 +1,86 @@ +{ + "name": "math-intrinsics", + "version": "1.1.0", + "description": "ES Math-related intrinsics and helpers, robustly cached.", + "main": false, + "exports": { + "./abs": "./abs.js", + "./floor": "./floor.js", + "./isFinite": "./isFinite.js", + "./isInteger": "./isInteger.js", + "./isNaN": "./isNaN.js", + "./isNegativeZero": "./isNegativeZero.js", + "./max": "./max.js", + "./min": "./min.js", + "./mod": "./mod.js", + "./pow": "./pow.js", + "./sign": "./sign.js", + "./round": "./round.js", + "./constants/maxArrayLength": "./constants/maxArrayLength.js", + "./constants/maxSafeInteger": "./constants/maxSafeInteger.js", + "./constants/maxValue": "./constants/maxValue.js", + "./package.json": "./package.json" + }, + "sideEffects": false, + "scripts": { + "prepack": "npmignore --auto --commentLines=autogenerated", + "prepublishOnly": "safe-publish-latest", + "prepublish": "not-in-publish || npm run prepublishOnly", + "pretest": "npm run lint", + "test": "npm run tests-only", + "tests-only": "nyc tape 'test/**/*.js'", + "posttest": "npx npm@'>= 10.2' audit --production", + "prelint": "evalmd README.md && eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git' | grep -v dist/)", + "lint": "eslint --ext=js,mjs .", + "postlint": "tsc && attw -P", + "version": "auto-changelog && git add CHANGELOG.md", + "postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\"" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/es-shims/math-intrinsics.git" + }, + "author": "Jordan Harband ", + "license": "MIT", + "bugs": { + "url": "https://github.com/es-shims/math-intrinsics/issues" + }, + "homepage": "https://github.com/es-shims/math-intrinsics#readme", + "devDependencies": { + "@arethetypeswrong/cli": "^0.17.1", + "@ljharb/eslint-config": "^21.1.1", + "@ljharb/tsconfig": "^0.2.2", + "@types/for-each": "^0.3.3", + "@types/object-inspect": "^1.13.0", + "@types/tape": "^5.8.0", + "auto-changelog": "^2.5.0", + "eclint": "^2.8.1", + "es-value-fixtures": "^1.5.0", + "eslint": "^8.8.0", + "evalmd": "^0.0.19", + "for-each": "^0.3.3", + "in-publish": "^2.0.1", + "npmignore": "^0.3.1", + "nyc": "^10.3.2", + "object-inspect": "^1.13.3", + "safe-publish-latest": "^2.0.0", + "tape": "^5.9.0", + "typescript": "next" + }, + "auto-changelog": { + "output": "CHANGELOG.md", + "template": "keepachangelog", + "unreleased": false, + "commitLimit": false, + "backfillLimit": false, + "hideCredit": true + }, + "publishConfig": { + "ignore": [ + ".github/workflows" + ] + }, + "engines": { + "node": ">= 0.4" + } +} diff --git a/node_modules/math-intrinsics/pow.d.ts b/node_modules/math-intrinsics/pow.d.ts new file mode 100644 index 0000000..5873c44 --- /dev/null +++ b/node_modules/math-intrinsics/pow.d.ts @@ -0,0 +1 @@ +export = Math.pow; \ No newline at end of file diff --git a/node_modules/math-intrinsics/pow.js b/node_modules/math-intrinsics/pow.js new file mode 100644 index 0000000..c0a4103 --- /dev/null +++ b/node_modules/math-intrinsics/pow.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./pow')} */ +module.exports = Math.pow; diff --git a/node_modules/math-intrinsics/round.d.ts b/node_modules/math-intrinsics/round.d.ts new file mode 100644 index 0000000..da1fde3 --- /dev/null +++ b/node_modules/math-intrinsics/round.d.ts @@ -0,0 +1 @@ +export = Math.round; \ No newline at end of file diff --git a/node_modules/math-intrinsics/round.js b/node_modules/math-intrinsics/round.js new file mode 100644 index 0000000..b792156 --- /dev/null +++ b/node_modules/math-intrinsics/round.js @@ -0,0 +1,4 @@ +'use strict'; + +/** @type {import('./round')} */ +module.exports = Math.round; diff --git a/node_modules/math-intrinsics/sign.d.ts b/node_modules/math-intrinsics/sign.d.ts new file mode 100644 index 0000000..c49ceca --- /dev/null +++ b/node_modules/math-intrinsics/sign.d.ts @@ -0,0 +1,3 @@ +declare function sign(x: number): number; + +export = sign; \ No newline at end of file diff --git a/node_modules/math-intrinsics/sign.js b/node_modules/math-intrinsics/sign.js new file mode 100644 index 0000000..9e5173c --- /dev/null +++ b/node_modules/math-intrinsics/sign.js @@ -0,0 +1,11 @@ +'use strict'; + +var $isNaN = require('./isNaN'); + +/** @type {import('./sign')} */ +module.exports = function sign(number) { + if ($isNaN(number) || number === 0) { + return number; + } + return number < 0 ? -1 : +1; +}; diff --git a/node_modules/math-intrinsics/test/index.js b/node_modules/math-intrinsics/test/index.js new file mode 100644 index 0000000..0f90a5d --- /dev/null +++ b/node_modules/math-intrinsics/test/index.js @@ -0,0 +1,192 @@ +'use strict'; + +var test = require('tape'); +var v = require('es-value-fixtures'); +var forEach = require('for-each'); +var inspect = require('object-inspect'); + +var abs = require('../abs'); +var floor = require('../floor'); +var isFinite = require('../isFinite'); +var isInteger = require('../isInteger'); +var isNaN = require('../isNaN'); +var isNegativeZero = require('../isNegativeZero'); +var max = require('../max'); +var min = require('../min'); +var mod = require('../mod'); +var pow = require('../pow'); +var round = require('../round'); +var sign = require('../sign'); + +var maxArrayLength = require('../constants/maxArrayLength'); +var maxSafeInteger = require('../constants/maxSafeInteger'); +var maxValue = require('../constants/maxValue'); + +test('abs', function (t) { + t.equal(abs(-1), 1, 'abs(-1) === 1'); + t.equal(abs(+1), 1, 'abs(+1) === 1'); + t.equal(abs(+0), +0, 'abs(+0) === +0'); + t.equal(abs(-0), +0, 'abs(-0) === +0'); + + t.end(); +}); + +test('floor', function (t) { + t.equal(floor(-1.1), -2, 'floor(-1.1) === -2'); + t.equal(floor(+1.1), 1, 'floor(+1.1) === 1'); + t.equal(floor(+0), +0, 'floor(+0) === +0'); + t.equal(floor(-0), -0, 'floor(-0) === -0'); + t.equal(floor(-Infinity), -Infinity, 'floor(-Infinity) === -Infinity'); + t.equal(floor(Number(Infinity)), Number(Infinity), 'floor(+Infinity) === +Infinity'); + t.equal(floor(NaN), NaN, 'floor(NaN) === NaN'); + t.equal(floor(0), +0, 'floor(0) === +0'); + t.equal(floor(-0), -0, 'floor(-0) === -0'); + t.equal(floor(1), 1, 'floor(1) === 1'); + t.equal(floor(-1), -1, 'floor(-1) === -1'); + t.equal(floor(1.1), 1, 'floor(1.1) === 1'); + t.equal(floor(-1.1), -2, 'floor(-1.1) === -2'); + t.equal(floor(maxValue), maxValue, 'floor(maxValue) === maxValue'); + t.equal(floor(maxSafeInteger), maxSafeInteger, 'floor(maxSafeInteger) === maxSafeInteger'); + + t.end(); +}); + +test('isFinite', function (t) { + t.equal(isFinite(0), true, 'isFinite(+0) === true'); + t.equal(isFinite(-0), true, 'isFinite(-0) === true'); + t.equal(isFinite(1), true, 'isFinite(1) === true'); + t.equal(isFinite(Infinity), false, 'isFinite(Infinity) === false'); + t.equal(isFinite(-Infinity), false, 'isFinite(-Infinity) === false'); + t.equal(isFinite(NaN), false, 'isFinite(NaN) === false'); + + forEach(v.nonNumbers, function (nonNumber) { + t.equal(isFinite(nonNumber), false, 'isFinite(' + inspect(nonNumber) + ') === false'); + }); + + t.end(); +}); + +test('isInteger', function (t) { + forEach([].concat( + // @ts-expect-error TS sucks with concat + v.nonNumbers, + v.nonIntegerNumbers + ), function (nonInteger) { + t.equal(isInteger(nonInteger), false, 'isInteger(' + inspect(nonInteger) + ') === false'); + }); + + t.end(); +}); + +test('isNaN', function (t) { + forEach([].concat( + // @ts-expect-error TS sucks with concat + v.nonNumbers, + v.infinities, + v.zeroes, + v.integerNumbers + ), function (nonNaN) { + t.equal(isNaN(nonNaN), false, 'isNaN(' + inspect(nonNaN) + ') === false'); + }); + + t.equal(isNaN(NaN), true, 'isNaN(NaN) === true'); + + t.end(); +}); + +test('isNegativeZero', function (t) { + t.equal(isNegativeZero(-0), true, 'isNegativeZero(-0) === true'); + t.equal(isNegativeZero(+0), false, 'isNegativeZero(+0) === false'); + t.equal(isNegativeZero(1), false, 'isNegativeZero(1) === false'); + t.equal(isNegativeZero(-1), false, 'isNegativeZero(-1) === false'); + t.equal(isNegativeZero(NaN), false, 'isNegativeZero(NaN) === false'); + t.equal(isNegativeZero(Infinity), false, 'isNegativeZero(Infinity) === false'); + t.equal(isNegativeZero(-Infinity), false, 'isNegativeZero(-Infinity) === false'); + + forEach(v.nonNumbers, function (nonNumber) { + t.equal(isNegativeZero(nonNumber), false, 'isNegativeZero(' + inspect(nonNumber) + ') === false'); + }); + + t.end(); +}); + +test('max', function (t) { + t.equal(max(1, 2), 2, 'max(1, 2) === 2'); + t.equal(max(1, 2, 3), 3, 'max(1, 2, 3) === 3'); + t.equal(max(1, 2, 3, 4), 4, 'max(1, 2, 3, 4) === 4'); + t.equal(max(1, 2, 3, 4, 5), 5, 'max(1, 2, 3, 4, 5) === 5'); + t.equal(max(1, 2, 3, 4, 5, 6), 6, 'max(1, 2, 3, 4, 5, 6) === 6'); + t.equal(max(1, 2, 3, 4, 5, 6, 7), 7, 'max(1, 2, 3, 4, 5, 6, 7) === 7'); + + t.end(); +}); + +test('min', function (t) { + t.equal(min(1, 2), 1, 'min(1, 2) === 1'); + t.equal(min(1, 2, 3), 1, 'min(1, 2, 3) === 1'); + t.equal(min(1, 2, 3, 4), 1, 'min(1, 2, 3, 4) === 1'); + t.equal(min(1, 2, 3, 4, 5), 1, 'min(1, 2, 3, 4, 5) === 1'); + t.equal(min(1, 2, 3, 4, 5, 6), 1, 'min(1, 2, 3, 4, 5, 6) === 1'); + + t.end(); +}); + +test('mod', function (t) { + t.equal(mod(1, 2), 1, 'mod(1, 2) === 1'); + t.equal(mod(2, 2), 0, 'mod(2, 2) === 0'); + t.equal(mod(3, 2), 1, 'mod(3, 2) === 1'); + t.equal(mod(4, 2), 0, 'mod(4, 2) === 0'); + t.equal(mod(5, 2), 1, 'mod(5, 2) === 1'); + t.equal(mod(6, 2), 0, 'mod(6, 2) === 0'); + t.equal(mod(7, 2), 1, 'mod(7, 2) === 1'); + t.equal(mod(8, 2), 0, 'mod(8, 2) === 0'); + t.equal(mod(9, 2), 1, 'mod(9, 2) === 1'); + t.equal(mod(10, 2), 0, 'mod(10, 2) === 0'); + t.equal(mod(11, 2), 1, 'mod(11, 2) === 1'); + + t.end(); +}); + +test('pow', function (t) { + t.equal(pow(2, 2), 4, 'pow(2, 2) === 4'); + t.equal(pow(2, 3), 8, 'pow(2, 3) === 8'); + t.equal(pow(2, 4), 16, 'pow(2, 4) === 16'); + t.equal(pow(2, 5), 32, 'pow(2, 5) === 32'); + t.equal(pow(2, 6), 64, 'pow(2, 6) === 64'); + t.equal(pow(2, 7), 128, 'pow(2, 7) === 128'); + t.equal(pow(2, 8), 256, 'pow(2, 8) === 256'); + t.equal(pow(2, 9), 512, 'pow(2, 9) === 512'); + t.equal(pow(2, 10), 1024, 'pow(2, 10) === 1024'); + + t.end(); +}); + +test('round', function (t) { + t.equal(round(1.1), 1, 'round(1.1) === 1'); + t.equal(round(1.5), 2, 'round(1.5) === 2'); + t.equal(round(1.9), 2, 'round(1.9) === 2'); + + t.end(); +}); + +test('sign', function (t) { + t.equal(sign(-1), -1, 'sign(-1) === -1'); + t.equal(sign(+1), +1, 'sign(+1) === +1'); + t.equal(sign(+0), +0, 'sign(+0) === +0'); + t.equal(sign(-0), -0, 'sign(-0) === -0'); + t.equal(sign(NaN), NaN, 'sign(NaN) === NaN'); + t.equal(sign(Infinity), +1, 'sign(Infinity) === +1'); + t.equal(sign(-Infinity), -1, 'sign(-Infinity) === -1'); + t.equal(sign(maxValue), +1, 'sign(maxValue) === +1'); + t.equal(sign(maxSafeInteger), +1, 'sign(maxSafeInteger) === +1'); + + t.end(); +}); + +test('constants', function (t) { + t.equal(typeof maxArrayLength, 'number', 'typeof maxArrayLength === "number"'); + t.equal(typeof maxSafeInteger, 'number', 'typeof maxSafeInteger === "number"'); + t.equal(typeof maxValue, 'number', 'typeof maxValue === "number"'); + + t.end(); +}); diff --git a/node_modules/math-intrinsics/tsconfig.json b/node_modules/math-intrinsics/tsconfig.json new file mode 100644 index 0000000..b131000 --- /dev/null +++ b/node_modules/math-intrinsics/tsconfig.json @@ -0,0 +1,3 @@ +{ + "extends": "@ljharb/tsconfig", +} diff --git a/node_modules/mime-db/HISTORY.md b/node_modules/mime-db/HISTORY.md new file mode 100644 index 0000000..7436f64 --- /dev/null +++ b/node_modules/mime-db/HISTORY.md @@ -0,0 +1,507 @@ +1.52.0 / 2022-02-21 +=================== + + * Add extensions from IANA for more `image/*` types + * Add extension `.asc` to `application/pgp-keys` + * Add extensions to various XML types + * Add new upstream MIME types + +1.51.0 / 2021-11-08 +=================== + + * Add new upstream MIME types + * Mark `image/vnd.microsoft.icon` as compressible + * Mark `image/vnd.ms-dds` as compressible + +1.50.0 / 2021-09-15 +=================== + + * Add deprecated iWorks mime types and extensions + * Add new upstream MIME types + +1.49.0 / 2021-07-26 +=================== + + * Add extension `.trig` to `application/trig` + * Add new upstream MIME types + +1.48.0 / 2021-05-30 +=================== + + * Add extension `.mvt` to `application/vnd.mapbox-vector-tile` + * Add new upstream MIME types + * Mark `text/yaml` as compressible + +1.47.0 / 2021-04-01 +=================== + + * Add new upstream MIME types + * Remove ambigious extensions from IANA for `application/*+xml` types + * Update primary extension to `.es` for `application/ecmascript` + +1.46.0 / 2021-02-13 +=================== + + * Add extension `.amr` to `audio/amr` + * Add extension `.m4s` to `video/iso.segment` + * Add extension `.opus` to `audio/ogg` + * Add new upstream MIME types + +1.45.0 / 2020-09-22 +=================== + + * Add `application/ubjson` with extension `.ubj` + * Add `image/avif` with extension `.avif` + * Add `image/ktx2` with extension `.ktx2` + * Add extension `.dbf` to `application/vnd.dbf` + * Add extension `.rar` to `application/vnd.rar` + * Add extension `.td` to `application/urc-targetdesc+xml` + * Add new upstream MIME types + * Fix extension of `application/vnd.apple.keynote` to be `.key` + +1.44.0 / 2020-04-22 +=================== + + * Add charsets from IANA + * Add extension `.cjs` to `application/node` + * Add new upstream MIME types + +1.43.0 / 2020-01-05 +=================== + + * Add `application/x-keepass2` with extension `.kdbx` + * Add extension `.mxmf` to `audio/mobile-xmf` + * Add extensions from IANA for `application/*+xml` types + * Add new upstream MIME types + +1.42.0 / 2019-09-25 +=================== + + * Add `image/vnd.ms-dds` with extension `.dds` + * Add new upstream MIME types + * Remove compressible from `multipart/mixed` + +1.41.0 / 2019-08-30 +=================== + + * Add new upstream MIME types + * Add `application/toml` with extension `.toml` + * Mark `font/ttf` as compressible + +1.40.0 / 2019-04-20 +=================== + + * Add extensions from IANA for `model/*` types + * Add `text/mdx` with extension `.mdx` + +1.39.0 / 2019-04-04 +=================== + + * Add extensions `.siv` and `.sieve` to `application/sieve` + * Add new upstream MIME types + +1.38.0 / 2019-02-04 +=================== + + * Add extension `.nq` to `application/n-quads` + * Add extension `.nt` to `application/n-triples` + * Add new upstream MIME types + * Mark `text/less` as compressible + +1.37.0 / 2018-10-19 +=================== + + * Add extensions to HEIC image types + * Add new upstream MIME types + +1.36.0 / 2018-08-20 +=================== + + * Add Apple file extensions from IANA + * Add extensions from IANA for `image/*` types + * Add new upstream MIME types + +1.35.0 / 2018-07-15 +=================== + + * Add extension `.owl` to `application/rdf+xml` + * Add new upstream MIME types + - Removes extension `.woff` from `application/font-woff` + +1.34.0 / 2018-06-03 +=================== + + * Add extension `.csl` to `application/vnd.citationstyles.style+xml` + * Add extension `.es` to `application/ecmascript` + * Add new upstream MIME types + * Add `UTF-8` as default charset for `text/turtle` + * Mark all XML-derived types as compressible + +1.33.0 / 2018-02-15 +=================== + + * Add extensions from IANA for `message/*` types + * Add new upstream MIME types + * Fix some incorrect OOXML types + * Remove `application/font-woff2` + +1.32.0 / 2017-11-29 +=================== + + * Add new upstream MIME types + * Update `text/hjson` to registered `application/hjson` + * Add `text/shex` with extension `.shex` + +1.31.0 / 2017-10-25 +=================== + + * Add `application/raml+yaml` with extension `.raml` + * Add `application/wasm` with extension `.wasm` + * Add new `font` type from IANA + * Add new upstream font extensions + * Add new upstream MIME types + * Add extensions for JPEG-2000 images + +1.30.0 / 2017-08-27 +=================== + + * Add `application/vnd.ms-outlook` + * Add `application/x-arj` + * Add extension `.mjs` to `application/javascript` + * Add glTF types and extensions + * Add new upstream MIME types + * Add `text/x-org` + * Add VirtualBox MIME types + * Fix `source` records for `video/*` types that are IANA + * Update `font/opentype` to registered `font/otf` + +1.29.0 / 2017-07-10 +=================== + + * Add `application/fido.trusted-apps+json` + * Add extension `.wadl` to `application/vnd.sun.wadl+xml` + * Add new upstream MIME types + * Add `UTF-8` as default charset for `text/css` + +1.28.0 / 2017-05-14 +=================== + + * Add new upstream MIME types + * Add extension `.gz` to `application/gzip` + * Update extensions `.md` and `.markdown` to be `text/markdown` + +1.27.0 / 2017-03-16 +=================== + + * Add new upstream MIME types + * Add `image/apng` with extension `.apng` + +1.26.0 / 2017-01-14 +=================== + + * Add new upstream MIME types + * Add extension `.geojson` to `application/geo+json` + +1.25.0 / 2016-11-11 +=================== + + * Add new upstream MIME types + +1.24.0 / 2016-09-18 +=================== + + * Add `audio/mp3` + * Add new upstream MIME types + +1.23.0 / 2016-05-01 +=================== + + * Add new upstream MIME types + * Add extension `.3gpp` to `audio/3gpp` + +1.22.0 / 2016-02-15 +=================== + + * Add `text/slim` + * Add extension `.rng` to `application/xml` + * Add new upstream MIME types + * Fix extension of `application/dash+xml` to be `.mpd` + * Update primary extension to `.m4a` for `audio/mp4` + +1.21.0 / 2016-01-06 +=================== + + * Add Google document types + * Add new upstream MIME types + +1.20.0 / 2015-11-10 +=================== + + * Add `text/x-suse-ymp` + * Add new upstream MIME types + +1.19.0 / 2015-09-17 +=================== + + * Add `application/vnd.apple.pkpass` + * Add new upstream MIME types + +1.18.0 / 2015-09-03 +=================== + + * Add new upstream MIME types + +1.17.0 / 2015-08-13 +=================== + + * Add `application/x-msdos-program` + * Add `audio/g711-0` + * Add `image/vnd.mozilla.apng` + * Add extension `.exe` to `application/x-msdos-program` + +1.16.0 / 2015-07-29 +=================== + + * Add `application/vnd.uri-map` + +1.15.0 / 2015-07-13 +=================== + + * Add `application/x-httpd-php` + +1.14.0 / 2015-06-25 +=================== + + * Add `application/scim+json` + * Add `application/vnd.3gpp.ussd+xml` + * Add `application/vnd.biopax.rdf+xml` + * Add `text/x-processing` + +1.13.0 / 2015-06-07 +=================== + + * Add nginx as a source + * Add `application/x-cocoa` + * Add `application/x-java-archive-diff` + * Add `application/x-makeself` + * Add `application/x-perl` + * Add `application/x-pilot` + * Add `application/x-redhat-package-manager` + * Add `application/x-sea` + * Add `audio/x-m4a` + * Add `audio/x-realaudio` + * Add `image/x-jng` + * Add `text/mathml` + +1.12.0 / 2015-06-05 +=================== + + * Add `application/bdoc` + * Add `application/vnd.hyperdrive+json` + * Add `application/x-bdoc` + * Add extension `.rtf` to `text/rtf` + +1.11.0 / 2015-05-31 +=================== + + * Add `audio/wav` + * Add `audio/wave` + * Add extension `.litcoffee` to `text/coffeescript` + * Add extension `.sfd-hdstx` to `application/vnd.hydrostatix.sof-data` + * Add extension `.n-gage` to `application/vnd.nokia.n-gage.symbian.install` + +1.10.0 / 2015-05-19 +=================== + + * Add `application/vnd.balsamiq.bmpr` + * Add `application/vnd.microsoft.portable-executable` + * Add `application/x-ns-proxy-autoconfig` + +1.9.1 / 2015-04-19 +================== + + * Remove `.json` extension from `application/manifest+json` + - This is causing bugs downstream + +1.9.0 / 2015-04-19 +================== + + * Add `application/manifest+json` + * Add `application/vnd.micro+json` + * Add `image/vnd.zbrush.pcx` + * Add `image/x-ms-bmp` + +1.8.0 / 2015-03-13 +================== + + * Add `application/vnd.citationstyles.style+xml` + * Add `application/vnd.fastcopy-disk-image` + * Add `application/vnd.gov.sk.xmldatacontainer+xml` + * Add extension `.jsonld` to `application/ld+json` + +1.7.0 / 2015-02-08 +================== + + * Add `application/vnd.gerber` + * Add `application/vnd.msa-disk-image` + +1.6.1 / 2015-02-05 +================== + + * Community extensions ownership transferred from `node-mime` + +1.6.0 / 2015-01-29 +================== + + * Add `application/jose` + * Add `application/jose+json` + * Add `application/json-seq` + * Add `application/jwk+json` + * Add `application/jwk-set+json` + * Add `application/jwt` + * Add `application/rdap+json` + * Add `application/vnd.gov.sk.e-form+xml` + * Add `application/vnd.ims.imsccv1p3` + +1.5.0 / 2014-12-30 +================== + + * Add `application/vnd.oracle.resource+json` + * Fix various invalid MIME type entries + - `application/mbox+xml` + - `application/oscp-response` + - `application/vwg-multiplexed` + - `audio/g721` + +1.4.0 / 2014-12-21 +================== + + * Add `application/vnd.ims.imsccv1p2` + * Fix various invalid MIME type entries + - `application/vnd-acucobol` + - `application/vnd-curl` + - `application/vnd-dart` + - `application/vnd-dxr` + - `application/vnd-fdf` + - `application/vnd-mif` + - `application/vnd-sema` + - `application/vnd-wap-wmlc` + - `application/vnd.adobe.flash-movie` + - `application/vnd.dece-zip` + - `application/vnd.dvb_service` + - `application/vnd.micrografx-igx` + - `application/vnd.sealed-doc` + - `application/vnd.sealed-eml` + - `application/vnd.sealed-mht` + - `application/vnd.sealed-ppt` + - `application/vnd.sealed-tiff` + - `application/vnd.sealed-xls` + - `application/vnd.sealedmedia.softseal-html` + - `application/vnd.sealedmedia.softseal-pdf` + - `application/vnd.wap-slc` + - `application/vnd.wap-wbxml` + - `audio/vnd.sealedmedia.softseal-mpeg` + - `image/vnd-djvu` + - `image/vnd-svf` + - `image/vnd-wap-wbmp` + - `image/vnd.sealed-png` + - `image/vnd.sealedmedia.softseal-gif` + - `image/vnd.sealedmedia.softseal-jpg` + - `model/vnd-dwf` + - `model/vnd.parasolid.transmit-binary` + - `model/vnd.parasolid.transmit-text` + - `text/vnd-a` + - `text/vnd-curl` + - `text/vnd.wap-wml` + * Remove example template MIME types + - `application/example` + - `audio/example` + - `image/example` + - `message/example` + - `model/example` + - `multipart/example` + - `text/example` + - `video/example` + +1.3.1 / 2014-12-16 +================== + + * Fix missing extensions + - `application/json5` + - `text/hjson` + +1.3.0 / 2014-12-07 +================== + + * Add `application/a2l` + * Add `application/aml` + * Add `application/atfx` + * Add `application/atxml` + * Add `application/cdfx+xml` + * Add `application/dii` + * Add `application/json5` + * Add `application/lxf` + * Add `application/mf4` + * Add `application/vnd.apache.thrift.compact` + * Add `application/vnd.apache.thrift.json` + * Add `application/vnd.coffeescript` + * Add `application/vnd.enphase.envoy` + * Add `application/vnd.ims.imsccv1p1` + * Add `text/csv-schema` + * Add `text/hjson` + * Add `text/markdown` + * Add `text/yaml` + +1.2.0 / 2014-11-09 +================== + + * Add `application/cea` + * Add `application/dit` + * Add `application/vnd.gov.sk.e-form+zip` + * Add `application/vnd.tmd.mediaflex.api+xml` + * Type `application/epub+zip` is now IANA-registered + +1.1.2 / 2014-10-23 +================== + + * Rebuild database for `application/x-www-form-urlencoded` change + +1.1.1 / 2014-10-20 +================== + + * Mark `application/x-www-form-urlencoded` as compressible. + +1.1.0 / 2014-09-28 +================== + + * Add `application/font-woff2` + +1.0.3 / 2014-09-25 +================== + + * Fix engine requirement in package + +1.0.2 / 2014-09-25 +================== + + * Add `application/coap-group+json` + * Add `application/dcd` + * Add `application/vnd.apache.thrift.binary` + * Add `image/vnd.tencent.tap` + * Mark all JSON-derived types as compressible + * Update `text/vtt` data + +1.0.1 / 2014-08-30 +================== + + * Fix extension ordering + +1.0.0 / 2014-08-30 +================== + + * Add `application/atf` + * Add `application/merge-patch+json` + * Add `multipart/x-mixed-replace` + * Add `source: 'apache'` metadata + * Add `source: 'iana'` metadata + * Remove badly-assumed charset data diff --git a/node_modules/mime-db/LICENSE b/node_modules/mime-db/LICENSE new file mode 100644 index 0000000..0751cb1 --- /dev/null +++ b/node_modules/mime-db/LICENSE @@ -0,0 +1,23 @@ +(The MIT License) + +Copyright (c) 2014 Jonathan Ong +Copyright (c) 2015-2022 Douglas Christopher Wilson + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +'Software'), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/mime-db/README.md b/node_modules/mime-db/README.md new file mode 100644 index 0000000..5a8fcfe --- /dev/null +++ b/node_modules/mime-db/README.md @@ -0,0 +1,100 @@ +# mime-db + +[![NPM Version][npm-version-image]][npm-url] +[![NPM Downloads][npm-downloads-image]][npm-url] +[![Node.js Version][node-image]][node-url] +[![Build Status][ci-image]][ci-url] +[![Coverage Status][coveralls-image]][coveralls-url] + +This is a large database of mime types and information about them. +It consists of a single, public JSON file and does not include any logic, +allowing it to remain as un-opinionated as possible with an API. +It aggregates data from the following sources: + +- http://www.iana.org/assignments/media-types/media-types.xhtml +- http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types +- http://hg.nginx.org/nginx/raw-file/default/conf/mime.types + +## Installation + +```bash +npm install mime-db +``` + +### Database Download + +If you're crazy enough to use this in the browser, you can just grab the +JSON file using [jsDelivr](https://www.jsdelivr.com/). It is recommended to +replace `master` with [a release tag](https://github.com/jshttp/mime-db/tags) +as the JSON format may change in the future. + +``` +https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json +``` + +## Usage + +```js +var db = require('mime-db') + +// grab data on .js files +var data = db['application/javascript'] +``` + +## Data Structure + +The JSON file is a map lookup for lowercased mime types. +Each mime type has the following properties: + +- `.source` - where the mime type is defined. + If not set, it's probably a custom media type. + - `apache` - [Apache common media types](http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types) + - `iana` - [IANA-defined media types](http://www.iana.org/assignments/media-types/media-types.xhtml) + - `nginx` - [nginx media types](http://hg.nginx.org/nginx/raw-file/default/conf/mime.types) +- `.extensions[]` - known extensions associated with this mime type. +- `.compressible` - whether a file of this type can be gzipped. +- `.charset` - the default charset associated with this type, if any. + +If unknown, every property could be `undefined`. + +## Contributing + +To edit the database, only make PRs against `src/custom-types.json` or +`src/custom-suffix.json`. + +The `src/custom-types.json` file is a JSON object with the MIME type as the +keys and the values being an object with the following keys: + +- `compressible` - leave out if you don't know, otherwise `true`/`false` to + indicate whether the data represented by the type is typically compressible. +- `extensions` - include an array of file extensions that are associated with + the type. +- `notes` - human-readable notes about the type, typically what the type is. +- `sources` - include an array of URLs of where the MIME type and the associated + extensions are sourced from. This needs to be a [primary source](https://en.wikipedia.org/wiki/Primary_source); + links to type aggregating sites and Wikipedia are _not acceptable_. + +To update the build, run `npm run build`. + +### Adding Custom Media Types + +The best way to get new media types included in this library is to register +them with the IANA. The community registration procedure is outlined in +[RFC 6838 section 5](http://tools.ietf.org/html/rfc6838#section-5). Types +registered with the IANA are automatically pulled into this library. + +If that is not possible / feasible, they can be added directly here as a +"custom" type. To do this, it is required to have a primary source that +definitively lists the media type. If an extension is going to be listed as +associateed with this media type, the source must definitively link the +media type and extension as well. + +[ci-image]: https://badgen.net/github/checks/jshttp/mime-db/master?label=ci +[ci-url]: https://github.com/jshttp/mime-db/actions?query=workflow%3Aci +[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-db/master +[coveralls-url]: https://coveralls.io/r/jshttp/mime-db?branch=master +[node-image]: https://badgen.net/npm/node/mime-db +[node-url]: https://nodejs.org/en/download +[npm-downloads-image]: https://badgen.net/npm/dm/mime-db +[npm-url]: https://npmjs.org/package/mime-db +[npm-version-image]: https://badgen.net/npm/v/mime-db diff --git a/node_modules/mime-db/db.json b/node_modules/mime-db/db.json new file mode 100644 index 0000000..eb9c42c --- /dev/null +++ b/node_modules/mime-db/db.json @@ -0,0 +1,8519 @@ +{ + "application/1d-interleaved-parityfec": { + "source": "iana" + }, + "application/3gpdash-qoe-report+xml": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/3gpp-ims+xml": { + "source": "iana", + "compressible": true + }, + "application/3gpphal+json": { + "source": "iana", + "compressible": true + }, + "application/3gpphalforms+json": { + "source": "iana", + "compressible": true + }, + "application/a2l": { + "source": "iana" + }, + "application/ace+cbor": { + "source": "iana" + }, + "application/activemessage": { + "source": "iana" + }, + "application/activity+json": { + "source": "iana", + "compressible": true + }, + "application/alto-costmap+json": { + "source": "iana", + "compressible": true + }, + "application/alto-costmapfilter+json": { + "source": "iana", + "compressible": true + }, + "application/alto-directory+json": { + "source": "iana", + "compressible": true + }, + "application/alto-endpointcost+json": { + "source": "iana", + "compressible": true + }, + "application/alto-endpointcostparams+json": { + "source": "iana", + "compressible": true + }, + "application/alto-endpointprop+json": { + "source": "iana", + "compressible": true + }, + "application/alto-endpointpropparams+json": { + "source": "iana", + "compressible": true + }, + "application/alto-error+json": { + "source": "iana", + "compressible": true + }, + "application/alto-networkmap+json": { + "source": "iana", + "compressible": true + }, + "application/alto-networkmapfilter+json": { + "source": "iana", + "compressible": true + }, + "application/alto-updatestreamcontrol+json": { + "source": "iana", + "compressible": true + }, + "application/alto-updatestreamparams+json": { + "source": "iana", + "compressible": true + }, + "application/aml": { + "source": "iana" + }, + "application/andrew-inset": { + "source": "iana", + "extensions": ["ez"] + }, + "application/applefile": { + "source": "iana" + }, + "application/applixware": { + "source": "apache", + "extensions": ["aw"] + }, + "application/at+jwt": { + "source": "iana" + }, + "application/atf": { + "source": "iana" + }, + "application/atfx": { + "source": "iana" + }, + "application/atom+xml": { + "source": "iana", + "compressible": true, + "extensions": ["atom"] + }, + "application/atomcat+xml": { + "source": "iana", + "compressible": true, + "extensions": ["atomcat"] + }, + "application/atomdeleted+xml": { + "source": "iana", + "compressible": true, + "extensions": ["atomdeleted"] + }, + "application/atomicmail": { + "source": "iana" + }, + "application/atomsvc+xml": { + "source": "iana", + "compressible": true, + "extensions": ["atomsvc"] + }, + "application/atsc-dwd+xml": { + "source": "iana", + "compressible": true, + "extensions": ["dwd"] + }, + "application/atsc-dynamic-event-message": { + "source": "iana" + }, + "application/atsc-held+xml": { + "source": "iana", + "compressible": true, + "extensions": ["held"] + }, + "application/atsc-rdt+json": { + "source": "iana", + "compressible": true + }, + "application/atsc-rsat+xml": { + "source": "iana", + "compressible": true, + "extensions": ["rsat"] + }, + "application/atxml": { + "source": "iana" + }, + "application/auth-policy+xml": { + "source": "iana", + "compressible": true + }, + "application/bacnet-xdd+zip": { + "source": "iana", + "compressible": false + }, + "application/batch-smtp": { + "source": "iana" + }, + "application/bdoc": { + "compressible": false, + "extensions": ["bdoc"] + }, + "application/beep+xml": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/calendar+json": { + "source": "iana", + "compressible": true + }, + "application/calendar+xml": { + "source": "iana", + "compressible": true, + "extensions": ["xcs"] + }, + "application/call-completion": { + "source": "iana" + }, + "application/cals-1840": { + "source": "iana" + }, + "application/captive+json": { + "source": "iana", + "compressible": true + }, + "application/cbor": { + "source": "iana" + }, + "application/cbor-seq": { + "source": "iana" + }, + "application/cccex": { + "source": "iana" + }, + "application/ccmp+xml": { + "source": "iana", + "compressible": true + }, + "application/ccxml+xml": { + "source": "iana", + "compressible": true, + "extensions": ["ccxml"] + }, + "application/cdfx+xml": { + "source": "iana", + "compressible": true, + "extensions": ["cdfx"] + }, + "application/cdmi-capability": { + "source": "iana", + "extensions": ["cdmia"] + }, + "application/cdmi-container": { + "source": "iana", + "extensions": ["cdmic"] + }, + "application/cdmi-domain": { + "source": "iana", + "extensions": ["cdmid"] + }, + "application/cdmi-object": { + "source": "iana", + "extensions": ["cdmio"] + }, + "application/cdmi-queue": { + "source": "iana", + "extensions": ["cdmiq"] + }, + "application/cdni": { + "source": "iana" + }, + "application/cea": { + "source": "iana" + }, + "application/cea-2018+xml": { + "source": "iana", + "compressible": true + }, + "application/cellml+xml": { + "source": "iana", + "compressible": true + }, + "application/cfw": { + "source": "iana" + }, + "application/city+json": { + "source": "iana", + "compressible": true + }, + "application/clr": { + "source": "iana" + }, + "application/clue+xml": { + "source": "iana", + "compressible": true + }, + "application/clue_info+xml": { + "source": "iana", + "compressible": true + }, + "application/cms": { + "source": "iana" + }, + "application/cnrp+xml": { + "source": "iana", + "compressible": true + }, + "application/coap-group+json": { + "source": "iana", + "compressible": true + }, + "application/coap-payload": { + "source": "iana" + }, + "application/commonground": { + "source": "iana" + }, + "application/conference-info+xml": { + "source": "iana", + "compressible": true + }, + "application/cose": { + "source": "iana" + }, + "application/cose-key": { + "source": "iana" + }, + "application/cose-key-set": { + "source": "iana" + }, + "application/cpl+xml": { + "source": "iana", + "compressible": true, + "extensions": ["cpl"] + }, + "application/csrattrs": { + "source": "iana" + }, + "application/csta+xml": { + "source": "iana", + "compressible": true + }, + "application/cstadata+xml": { + "source": "iana", + "compressible": true + }, + "application/csvm+json": { + "source": "iana", + "compressible": true + }, + "application/cu-seeme": { + "source": "apache", + "extensions": ["cu"] + }, + "application/cwt": { + "source": "iana" + }, + "application/cybercash": { + "source": "iana" + }, + "application/dart": { + "compressible": true + }, + "application/dash+xml": { + "source": "iana", + "compressible": true, + "extensions": ["mpd"] + }, + "application/dash-patch+xml": { + "source": "iana", + "compressible": true, + "extensions": ["mpp"] + }, + "application/dashdelta": { + "source": "iana" + }, + "application/davmount+xml": { + "source": "iana", + "compressible": true, + "extensions": ["davmount"] + }, + "application/dca-rft": { + "source": "iana" + }, + "application/dcd": { + "source": "iana" + }, + "application/dec-dx": { + "source": "iana" + }, + "application/dialog-info+xml": { + "source": "iana", + "compressible": true + }, + "application/dicom": { + "source": "iana" + }, + "application/dicom+json": { + "source": "iana", + "compressible": true + }, + "application/dicom+xml": { + "source": "iana", + "compressible": true + }, + "application/dii": { + "source": "iana" + }, + "application/dit": { + "source": "iana" + }, + "application/dns": { + "source": "iana" + }, + "application/dns+json": { + "source": "iana", + "compressible": true + }, + "application/dns-message": { + "source": "iana" + }, + "application/docbook+xml": { + "source": "apache", + "compressible": true, + "extensions": ["dbk"] + }, + "application/dots+cbor": { + "source": "iana" + }, + "application/dskpp+xml": { + "source": "iana", + "compressible": true + }, + "application/dssc+der": { + "source": "iana", + "extensions": ["dssc"] + }, + "application/dssc+xml": { + "source": "iana", + "compressible": true, + "extensions": ["xdssc"] + }, + "application/dvcs": { + "source": "iana" + }, + "application/ecmascript": { + "source": "iana", + "compressible": true, + "extensions": ["es","ecma"] + }, + "application/edi-consent": { + "source": "iana" + }, + "application/edi-x12": { + "source": "iana", + "compressible": false + }, + "application/edifact": { + "source": "iana", + "compressible": false + }, + "application/efi": { + "source": "iana" + }, + "application/elm+json": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/elm+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.cap+xml": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/emergencycalldata.comment+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.control+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.deviceinfo+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.ecall.msd": { + "source": "iana" + }, + "application/emergencycalldata.providerinfo+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.serviceinfo+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.subscriberinfo+xml": { + "source": "iana", + "compressible": true + }, + "application/emergencycalldata.veds+xml": { + "source": "iana", + "compressible": true + }, + "application/emma+xml": { + "source": "iana", + "compressible": true, + "extensions": ["emma"] + }, + "application/emotionml+xml": { + "source": "iana", + "compressible": true, + "extensions": ["emotionml"] + }, + "application/encaprtp": { + "source": "iana" + }, + "application/epp+xml": { + "source": "iana", + "compressible": true + }, + "application/epub+zip": { + "source": "iana", + "compressible": false, + "extensions": ["epub"] + }, + "application/eshop": { + "source": "iana" + }, + "application/exi": { + "source": "iana", + "extensions": ["exi"] + }, + "application/expect-ct-report+json": { + "source": "iana", + "compressible": true + }, + "application/express": { + "source": "iana", + "extensions": ["exp"] + }, + "application/fastinfoset": { + "source": "iana" + }, + "application/fastsoap": { + "source": "iana" + }, + "application/fdt+xml": { + "source": "iana", + "compressible": true, + "extensions": ["fdt"] + }, + "application/fhir+json": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/fhir+xml": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/fido.trusted-apps+json": { + "compressible": true + }, + "application/fits": { + "source": "iana" + }, + "application/flexfec": { + "source": "iana" + }, + "application/font-sfnt": { + "source": "iana" + }, + "application/font-tdpfr": { + "source": "iana", + "extensions": ["pfr"] + }, + "application/font-woff": { + "source": "iana", + "compressible": false + }, + "application/framework-attributes+xml": { + "source": "iana", + "compressible": true + }, + "application/geo+json": { + "source": "iana", + "compressible": true, + "extensions": ["geojson"] + }, + "application/geo+json-seq": { + "source": "iana" + }, + "application/geopackage+sqlite3": { + "source": "iana" + }, + "application/geoxacml+xml": { + "source": "iana", + "compressible": true + }, + "application/gltf-buffer": { + "source": "iana" + }, + "application/gml+xml": { + "source": "iana", + "compressible": true, + "extensions": ["gml"] + }, + "application/gpx+xml": { + "source": "apache", + "compressible": true, + "extensions": ["gpx"] + }, + "application/gxf": { + "source": "apache", + "extensions": ["gxf"] + }, + "application/gzip": { + "source": "iana", + "compressible": false, + "extensions": ["gz"] + }, + "application/h224": { + "source": "iana" + }, + "application/held+xml": { + "source": "iana", + "compressible": true + }, + "application/hjson": { + "extensions": ["hjson"] + }, + "application/http": { + "source": "iana" + }, + "application/hyperstudio": { + "source": "iana", + "extensions": ["stk"] + }, + "application/ibe-key-request+xml": { + "source": "iana", + "compressible": true + }, + "application/ibe-pkg-reply+xml": { + "source": "iana", + "compressible": true + }, + "application/ibe-pp-data": { + "source": "iana" + }, + "application/iges": { + "source": "iana" + }, + "application/im-iscomposing+xml": { + "source": "iana", + "charset": "UTF-8", + "compressible": true + }, + "application/index": { + "source": "iana" + }, + "application/index.cmd": { + "source": "iana" + }, + "application/index.obj": { + "source": "iana" + }, + "application/index.response": { + "source": "iana" + }, + "application/index.vnd": { + "source": "iana" + }, + "application/inkml+xml": { + "source": "iana", + "compressible": true, + "extensions": ["ink","inkml"] + }, + "application/iotp": { + "source": "iana" + }, + "application/ipfix": { + "source": "iana", + "extensions": ["ipfix"] + }, + "application/ipp": { + "source": "iana" + }, + "application/isup": { + "source": "iana" + }, + "application/its+xml": { + "source": "iana", + "compressible": true, + "extensions": ["its"] + }, + "application/java-archive": { + "source": "apache", + "compressible": false, + "extensions": ["jar","war","ear"] + }, + "application/java-serialized-object": { + "source": "apache", + "compressible": false, + "extensions": ["ser"] + }, + "application/java-vm": { + "source": "apache", + "compressible": false, + "extensions": ["class"] + }, + "application/javascript": { + "source": "iana", + "charset": "UTF-8", + "compressible": true, + "extensions": ["js","mjs"] + }, + "application/jf2feed+json": { + "source": "iana", + "compressible": true + }, + "application/jose": { + "source": "iana" + }, + "application/jose+json": { + "source": "iana", + "compressible": true + }, + "application/jrd+json": { + "source": "iana", + "compressible": true + }, + "application/jscalendar+json": { + "source": "iana", + "compressible": true + }, + "application/json": { + "source": "iana", + "charset": "UTF-8", + "compressible": true, + "extensions": ["json","map"] + }, + "application/json-patch+json": { + "source": "iana", + "compressible": true + }, + "application/json-seq": { + "source": "iana" + }, + "application/json5": { + "extensions": ["json5"] + }, + "application/jsonml+json": { + "source": "apache", + "compressible": true, + "extensions": ["jsonml"] + }, + "application/jwk+json": { + "source": "iana", + "compressible": true + }, + "application/jwk-set+json": { + "source": "iana", + "compressible": true + }, + "application/jwt": { + "source": "iana" + }, + "application/kpml-request+xml": { + "source": "iana", + "compressible": true + }, + "application/kpml-response+xml": { + "source": "iana", + "compressible": true + }, + "application/ld+json": { + "source": "iana", + "compressible": true, + "extensions": ["jsonld"] + }, + "application/lgr+xml": { + "source": "iana", + "compressible": true, + "extensions": ["lgr"] + }, + "application/link-format": { + "source": "iana" + }, + "application/load-control+xml": { + "source": "iana", + "compressible": true + }, + "application/lost+xml": { + "source": "iana", + "compressible": true, + "extensions": ["lostxml"] + }, + "application/lostsync+xml": { + "source": "iana", + "compressible": true + }, + "application/lpf+zip": { + "source": "iana", + "compressible": false + }, + "application/lxf": { + "source": "iana" + }, + "application/mac-binhex40": { + "source": "iana", + "extensions": ["hqx"] + }, + "application/mac-compactpro": { + "source": "apache", + "extensions": ["cpt"] + }, + "application/macwriteii": { + "source": "iana" + }, + "application/mads+xml": { + "source": "iana", + "compressible": true, + "extensions": ["mads"] + }, + "application/manifest+json": { + "source": "iana", + "charset": "UTF-8", + "compressible": true, + "extensions": ["webmanifest"] + }, + "application/marc": { + "source": "iana", 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-0,0 +1,60 @@ +{ + "name": "mime-db", + "description": "Media Type Database", + "version": "1.52.0", + "contributors": [ + "Douglas Christopher Wilson ", + "Jonathan Ong (http://jongleberry.com)", + "Robert Kieffer (http://github.com/broofa)" + ], + "license": "MIT", + "keywords": [ + "mime", + "db", + "type", + "types", + "database", + "charset", + "charsets" + ], + "repository": "jshttp/mime-db", + "devDependencies": { + "bluebird": "3.7.2", + "co": "4.6.0", + "cogent": "1.0.1", + "csv-parse": "4.16.3", + "eslint": "7.32.0", + "eslint-config-standard": "15.0.1", + "eslint-plugin-import": "2.25.4", + "eslint-plugin-markdown": "2.2.1", + "eslint-plugin-node": "11.1.0", + "eslint-plugin-promise": "5.1.1", + "eslint-plugin-standard": "4.1.0", + "gnode": "0.1.2", + "media-typer": "1.1.0", + "mocha": "9.2.1", + "nyc": "15.1.0", + "raw-body": "2.5.0", + "stream-to-array": "2.3.0" + }, + "files": [ + "HISTORY.md", + "LICENSE", + "README.md", + "db.json", + "index.js" + ], + "engines": { + "node": ">= 0.6" + }, + "scripts": { + "build": "node scripts/build", + "fetch": "node scripts/fetch-apache && gnode scripts/fetch-iana && node scripts/fetch-nginx", + "lint": "eslint .", + "test": "mocha --reporter spec --bail --check-leaks test/", + "test-ci": "nyc --reporter=lcov --reporter=text npm test", + "test-cov": "nyc --reporter=html --reporter=text npm test", + "update": "npm run fetch && npm run build", + "version": "node scripts/version-history.js && git add HISTORY.md" + } +} diff --git a/node_modules/mime-types/HISTORY.md b/node_modules/mime-types/HISTORY.md new file mode 100644 index 0000000..c5043b7 --- /dev/null +++ b/node_modules/mime-types/HISTORY.md @@ -0,0 +1,397 @@ +2.1.35 / 2022-03-12 +=================== + + * deps: mime-db@1.52.0 + - Add extensions from IANA for more `image/*` types + - Add extension `.asc` to `application/pgp-keys` + - Add extensions to various XML types + - Add new upstream MIME types + +2.1.34 / 2021-11-08 +=================== + + * deps: mime-db@1.51.0 + - Add new upstream MIME types + +2.1.33 / 2021-10-01 +=================== + + * deps: mime-db@1.50.0 + - Add deprecated iWorks mime types and extensions + - Add new upstream MIME types + +2.1.32 / 2021-07-27 +=================== + + * deps: mime-db@1.49.0 + - Add extension `.trig` to `application/trig` + - Add new upstream MIME types + +2.1.31 / 2021-06-01 +=================== + + * deps: mime-db@1.48.0 + - Add extension `.mvt` to `application/vnd.mapbox-vector-tile` + - Add new upstream MIME types + +2.1.30 / 2021-04-02 +=================== + + * deps: mime-db@1.47.0 + - Add extension `.amr` to `audio/amr` + - Remove ambigious extensions from IANA for `application/*+xml` types + - Update primary extension to `.es` for `application/ecmascript` + +2.1.29 / 2021-02-17 +=================== + + * deps: mime-db@1.46.0 + - Add extension `.amr` to `audio/amr` + - Add extension `.m4s` to `video/iso.segment` + - Add extension `.opus` to `audio/ogg` + - Add new upstream MIME types + +2.1.28 / 2021-01-01 +=================== + + * deps: mime-db@1.45.0 + - Add `application/ubjson` with extension `.ubj` + - Add `image/avif` with extension `.avif` + - Add `image/ktx2` with extension `.ktx2` + - Add extension `.dbf` to `application/vnd.dbf` + - Add extension `.rar` to `application/vnd.rar` + - Add extension `.td` to `application/urc-targetdesc+xml` + - Add new upstream MIME types + - Fix extension of `application/vnd.apple.keynote` to be `.key` + +2.1.27 / 2020-04-23 +=================== + + * deps: mime-db@1.44.0 + - Add charsets from IANA + - Add extension `.cjs` to `application/node` + - Add new upstream MIME types + +2.1.26 / 2020-01-05 +=================== + + * deps: mime-db@1.43.0 + - Add `application/x-keepass2` with extension `.kdbx` + - Add extension `.mxmf` to `audio/mobile-xmf` + - Add extensions from IANA for `application/*+xml` types + - Add new upstream MIME types + +2.1.25 / 2019-11-12 +=================== + + * deps: mime-db@1.42.0 + - Add new upstream MIME types + - Add `application/toml` with extension `.toml` + - Add `image/vnd.ms-dds` with extension `.dds` + +2.1.24 / 2019-04-20 +=================== + + * deps: mime-db@1.40.0 + - Add extensions from IANA for `model/*` types + - Add `text/mdx` with extension `.mdx` + +2.1.23 / 2019-04-17 +=================== + + * deps: mime-db@~1.39.0 + - Add extensions `.siv` and `.sieve` to `application/sieve` + - Add new upstream MIME types + +2.1.22 / 2019-02-14 +=================== + + * deps: mime-db@~1.38.0 + - Add extension `.nq` to `application/n-quads` + - Add extension `.nt` to `application/n-triples` + - Add new upstream MIME types + +2.1.21 / 2018-10-19 +=================== + + * deps: mime-db@~1.37.0 + - Add extensions to HEIC image types + - Add new upstream MIME types + +2.1.20 / 2018-08-26 +=================== + + * deps: mime-db@~1.36.0 + - Add Apple file extensions from IANA + - Add extensions from IANA for `image/*` types + - Add new upstream MIME types + +2.1.19 / 2018-07-17 +=================== + + * deps: mime-db@~1.35.0 + - Add extension `.csl` to `application/vnd.citationstyles.style+xml` + - Add extension `.es` to `application/ecmascript` + - Add extension `.owl` to `application/rdf+xml` + - Add new upstream MIME types + - Add UTF-8 as default charset for `text/turtle` + +2.1.18 / 2018-02-16 +=================== + + * deps: mime-db@~1.33.0 + - Add `application/raml+yaml` with extension `.raml` + - Add `application/wasm` with extension `.wasm` + - Add `text/shex` with extension `.shex` + - Add extensions for JPEG-2000 images + - Add extensions from IANA for `message/*` types + - Add new upstream MIME types + - Update font MIME types + - Update `text/hjson` to registered `application/hjson` + +2.1.17 / 2017-09-01 +=================== + + * deps: mime-db@~1.30.0 + - Add `application/vnd.ms-outlook` + - Add `application/x-arj` + - Add extension `.mjs` to `application/javascript` + - Add glTF types and extensions + - Add new upstream MIME types + - Add `text/x-org` + - Add VirtualBox MIME types + - Fix `source` records for `video/*` types that are IANA + - Update `font/opentype` to registered `font/otf` + +2.1.16 / 2017-07-24 +=================== + + * deps: mime-db@~1.29.0 + - Add `application/fido.trusted-apps+json` + - Add extension `.wadl` to `application/vnd.sun.wadl+xml` + - Add extension `.gz` to `application/gzip` + - Add new upstream MIME types + - Update extensions `.md` and `.markdown` to be `text/markdown` + +2.1.15 / 2017-03-23 +=================== + + * deps: mime-db@~1.27.0 + - Add new mime types + - Add `image/apng` + +2.1.14 / 2017-01-14 +=================== + + * deps: mime-db@~1.26.0 + - Add new mime types + +2.1.13 / 2016-11-18 +=================== + + * deps: mime-db@~1.25.0 + - Add new mime types + +2.1.12 / 2016-09-18 +=================== + + * deps: mime-db@~1.24.0 + - Add new mime types + - Add `audio/mp3` + +2.1.11 / 2016-05-01 +=================== + + * deps: mime-db@~1.23.0 + - Add new mime types + +2.1.10 / 2016-02-15 +=================== + + * deps: mime-db@~1.22.0 + - Add new mime types + - Fix extension of `application/dash+xml` + - Update primary extension for `audio/mp4` + +2.1.9 / 2016-01-06 +================== + + * deps: mime-db@~1.21.0 + - Add new mime types + +2.1.8 / 2015-11-30 +================== + + * deps: mime-db@~1.20.0 + - Add new mime types + +2.1.7 / 2015-09-20 +================== + + * deps: mime-db@~1.19.0 + - Add new mime types + +2.1.6 / 2015-09-03 +================== + + * deps: mime-db@~1.18.0 + - Add new mime types + +2.1.5 / 2015-08-20 +================== + + * deps: mime-db@~1.17.0 + - Add new mime types + +2.1.4 / 2015-07-30 +================== + + * deps: mime-db@~1.16.0 + - Add new mime types + +2.1.3 / 2015-07-13 +================== + + * deps: mime-db@~1.15.0 + - Add new mime types + +2.1.2 / 2015-06-25 +================== + + * deps: mime-db@~1.14.0 + - Add new mime types + +2.1.1 / 2015-06-08 +================== + + * perf: fix deopt during mapping + +2.1.0 / 2015-06-07 +================== + + * Fix incorrectly treating extension-less file name as extension + - i.e. `'path/to/json'` will no longer return `application/json` + * Fix `.charset(type)` to accept parameters + * Fix `.charset(type)` to match case-insensitive + * Improve generation of extension to MIME mapping + * Refactor internals for readability and no argument reassignment + * Prefer `application/*` MIME types from the same source + * Prefer any type over `application/octet-stream` + * deps: mime-db@~1.13.0 + - Add nginx as a source + - Add new mime types + +2.0.14 / 2015-06-06 +=================== + + * deps: mime-db@~1.12.0 + - Add new mime types + +2.0.13 / 2015-05-31 +=================== + + * deps: mime-db@~1.11.0 + - Add new mime types + +2.0.12 / 2015-05-19 +=================== + + * deps: mime-db@~1.10.0 + - Add new mime types + +2.0.11 / 2015-05-05 +=================== + + * deps: mime-db@~1.9.1 + - Add new mime types + +2.0.10 / 2015-03-13 +=================== + + * deps: mime-db@~1.8.0 + - Add new mime types + +2.0.9 / 2015-02-09 +================== + + * deps: mime-db@~1.7.0 + - Add new mime types + - Community extensions ownership transferred from `node-mime` + +2.0.8 / 2015-01-29 +================== + + * deps: mime-db@~1.6.0 + - Add new mime types + +2.0.7 / 2014-12-30 +================== + + * deps: mime-db@~1.5.0 + - Add new mime types + - Fix various invalid MIME type entries + +2.0.6 / 2014-12-30 +================== + + * deps: mime-db@~1.4.0 + - Add new mime types + - Fix various invalid MIME type entries + - Remove example template MIME types + +2.0.5 / 2014-12-29 +================== + + * deps: mime-db@~1.3.1 + - Fix missing extensions + +2.0.4 / 2014-12-10 +================== + + * deps: mime-db@~1.3.0 + - Add new mime types + +2.0.3 / 2014-11-09 +================== + + * deps: mime-db@~1.2.0 + - Add new mime types + +2.0.2 / 2014-09-28 +================== + + * deps: mime-db@~1.1.0 + - Add new mime types + - Update charsets + +2.0.1 / 2014-09-07 +================== + + * Support Node.js 0.6 + +2.0.0 / 2014-09-02 +================== + + * Use `mime-db` + * Remove `.define()` + +1.0.2 / 2014-08-04 +================== + + * Set charset=utf-8 for `text/javascript` + +1.0.1 / 2014-06-24 +================== + + * Add `text/jsx` type + +1.0.0 / 2014-05-12 +================== + + * Return `false` for unknown types + * Set charset=utf-8 for `application/json` + +0.1.0 / 2014-05-02 +================== + + * Initial release diff --git a/node_modules/mime-types/LICENSE b/node_modules/mime-types/LICENSE new file mode 100644 index 0000000..0616607 --- /dev/null +++ b/node_modules/mime-types/LICENSE @@ -0,0 +1,23 @@ +(The MIT License) + +Copyright (c) 2014 Jonathan Ong +Copyright (c) 2015 Douglas Christopher Wilson + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +'Software'), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/mime-types/README.md b/node_modules/mime-types/README.md new file mode 100644 index 0000000..48d2fb4 --- /dev/null +++ b/node_modules/mime-types/README.md @@ -0,0 +1,113 @@ +# mime-types + +[![NPM Version][npm-version-image]][npm-url] +[![NPM Downloads][npm-downloads-image]][npm-url] +[![Node.js Version][node-version-image]][node-version-url] +[![Build Status][ci-image]][ci-url] +[![Test Coverage][coveralls-image]][coveralls-url] + +The ultimate javascript content-type utility. + +Similar to [the `mime@1.x` module](https://www.npmjs.com/package/mime), except: + +- __No fallbacks.__ Instead of naively returning the first available type, + `mime-types` simply returns `false`, so do + `var type = mime.lookup('unrecognized') || 'application/octet-stream'`. +- No `new Mime()` business, so you could do `var lookup = require('mime-types').lookup`. +- No `.define()` functionality +- Bug fixes for `.lookup(path)` + +Otherwise, the API is compatible with `mime` 1.x. + +## Install + +This is a [Node.js](https://nodejs.org/en/) module available through the +[npm registry](https://www.npmjs.com/). Installation is done using the +[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): + +```sh +$ npm install mime-types +``` + +## Adding Types + +All mime types are based on [mime-db](https://www.npmjs.com/package/mime-db), +so open a PR there if you'd like to add mime types. + +## API + +```js +var mime = require('mime-types') +``` + +All functions return `false` if input is invalid or not found. + +### mime.lookup(path) + +Lookup the content-type associated with a file. + +```js +mime.lookup('json') // 'application/json' +mime.lookup('.md') // 'text/markdown' +mime.lookup('file.html') // 'text/html' +mime.lookup('folder/file.js') // 'application/javascript' +mime.lookup('folder/.htaccess') // false + +mime.lookup('cats') // false +``` + +### mime.contentType(type) + +Create a full content-type header given a content-type or extension. +When given an extension, `mime.lookup` is used to get the matching +content-type, otherwise the given content-type is used. Then if the +content-type does not already have a `charset` parameter, `mime.charset` +is used to get the default charset and add to the returned content-type. + +```js +mime.contentType('markdown') // 'text/x-markdown; charset=utf-8' +mime.contentType('file.json') // 'application/json; charset=utf-8' +mime.contentType('text/html') // 'text/html; charset=utf-8' +mime.contentType('text/html; charset=iso-8859-1') // 'text/html; charset=iso-8859-1' + +// from a full path +mime.contentType(path.extname('/path/to/file.json')) // 'application/json; charset=utf-8' +``` + +### mime.extension(type) + +Get the default extension for a content-type. + +```js +mime.extension('application/octet-stream') // 'bin' +``` + +### mime.charset(type) + +Lookup the implied default charset of a content-type. + +```js +mime.charset('text/markdown') // 'UTF-8' +``` + +### var type = mime.types[extension] + +A map of content-types by extension. + +### [extensions...] = mime.extensions[type] + +A map of extensions by content-type. + +## License + +[MIT](LICENSE) + +[ci-image]: https://badgen.net/github/checks/jshttp/mime-types/master?label=ci +[ci-url]: https://github.com/jshttp/mime-types/actions/workflows/ci.yml +[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-types/master +[coveralls-url]: https://coveralls.io/r/jshttp/mime-types?branch=master +[node-version-image]: https://badgen.net/npm/node/mime-types +[node-version-url]: https://nodejs.org/en/download +[npm-downloads-image]: https://badgen.net/npm/dm/mime-types +[npm-url]: https://npmjs.org/package/mime-types +[npm-version-image]: https://badgen.net/npm/v/mime-types diff --git a/node_modules/mime-types/index.js b/node_modules/mime-types/index.js new file mode 100644 index 0000000..b9f34d5 --- /dev/null +++ b/node_modules/mime-types/index.js @@ -0,0 +1,188 @@ +/*! + * mime-types + * Copyright(c) 2014 Jonathan Ong + * Copyright(c) 2015 Douglas Christopher Wilson + * MIT Licensed + */ + +'use strict' + +/** + * Module dependencies. + * @private + */ + +var db = require('mime-db') +var extname = require('path').extname + +/** + * Module variables. + * @private + */ + +var EXTRACT_TYPE_REGEXP = /^\s*([^;\s]*)(?:;|\s|$)/ +var TEXT_TYPE_REGEXP = /^text\//i + +/** + * Module exports. + * @public + */ + +exports.charset = charset +exports.charsets = { lookup: charset } +exports.contentType = contentType +exports.extension = extension +exports.extensions = Object.create(null) +exports.lookup = lookup +exports.types = Object.create(null) + +// Populate the extensions/types maps +populateMaps(exports.extensions, exports.types) + +/** + * Get the default charset for a MIME type. + * + * @param {string} type + * @return {boolean|string} + */ + +function charset (type) { + if (!type || typeof type !== 'string') { + return false + } + + // TODO: use media-typer + var match = EXTRACT_TYPE_REGEXP.exec(type) + var mime = match && db[match[1].toLowerCase()] + + if (mime && mime.charset) { + return mime.charset + } + + // default text/* to utf-8 + if (match && TEXT_TYPE_REGEXP.test(match[1])) { + return 'UTF-8' + } + + return false +} + +/** + * Create a full Content-Type header given a MIME type or extension. + * + * @param {string} str + * @return {boolean|string} + */ + +function contentType (str) { + // TODO: should this even be in this module? + if (!str || typeof str !== 'string') { + return false + } + + var mime = str.indexOf('/') === -1 + ? exports.lookup(str) + : str + + if (!mime) { + return false + } + + // TODO: use content-type or other module + if (mime.indexOf('charset') === -1) { + var charset = exports.charset(mime) + if (charset) mime += '; charset=' + charset.toLowerCase() + } + + return mime +} + +/** + * Get the default extension for a MIME type. + * + * @param {string} type + * @return {boolean|string} + */ + +function extension (type) { + if (!type || typeof type !== 'string') { + return false + } + + // TODO: use media-typer + var match = EXTRACT_TYPE_REGEXP.exec(type) + + // get extensions + var exts = match && exports.extensions[match[1].toLowerCase()] + + if (!exts || !exts.length) { + return false + } + + return exts[0] +} + +/** + * Lookup the MIME type for a file path/extension. + * + * @param {string} path + * @return {boolean|string} + */ + +function lookup (path) { + if (!path || typeof path !== 'string') { + return false + } + + // get the extension ("ext" or ".ext" or full path) + var extension = extname('x.' + path) + .toLowerCase() + .substr(1) + + if (!extension) { + return false + } + + return exports.types[extension] || false +} + +/** + * Populate the extensions and types maps. + * @private + */ + +function populateMaps (extensions, types) { + // source preference (least -> most) + var preference = ['nginx', 'apache', undefined, 'iana'] + + Object.keys(db).forEach(function forEachMimeType (type) { + var mime = db[type] + var exts = mime.extensions + + if (!exts || !exts.length) { + return + } + + // mime -> extensions + extensions[type] = exts + + // extension -> mime + for (var i = 0; i < exts.length; i++) { + var extension = exts[i] + + if (types[extension]) { + var from = preference.indexOf(db[types[extension]].source) + var to = preference.indexOf(mime.source) + + if (types[extension] !== 'application/octet-stream' && + (from > to || (from === to && types[extension].substr(0, 12) === 'application/'))) { + // skip the remapping + continue + } + } + + // set the extension -> mime + types[extension] = type + } + }) +} diff --git a/node_modules/mime-types/package.json b/node_modules/mime-types/package.json new file mode 100644 index 0000000..bbef696 --- /dev/null +++ b/node_modules/mime-types/package.json @@ -0,0 +1,44 @@ +{ + "name": "mime-types", + "description": "The ultimate javascript content-type utility.", + "version": "2.1.35", + "contributors": [ + "Douglas Christopher Wilson ", + "Jeremiah Senkpiel (https://searchbeam.jit.su)", + "Jonathan Ong (http://jongleberry.com)" + ], + "license": "MIT", + "keywords": [ + "mime", + "types" + ], + "repository": "jshttp/mime-types", + "dependencies": { + "mime-db": "1.52.0" + }, + "devDependencies": { + "eslint": "7.32.0", + "eslint-config-standard": "14.1.1", + "eslint-plugin-import": "2.25.4", + "eslint-plugin-markdown": "2.2.1", + "eslint-plugin-node": "11.1.0", + "eslint-plugin-promise": "5.2.0", + "eslint-plugin-standard": "4.1.0", + "mocha": "9.2.2", + "nyc": "15.1.0" + }, + "files": [ + "HISTORY.md", + "LICENSE", + "index.js" + ], + "engines": { + "node": ">= 0.6" + }, + "scripts": { + "lint": "eslint .", + "test": "mocha --reporter spec test/test.js", + "test-ci": "nyc --reporter=lcov --reporter=text npm test", + "test-cov": "nyc --reporter=html --reporter=text npm test" + } +} diff --git a/node_modules/node-domexception/.history/README_20210527203617.md b/node_modules/node-domexception/.history/README_20210527203617.md new file mode 100644 index 0000000..38d8f85 --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527203617.md @@ -0,0 +1,2 @@ +# node-domexception +An implementation of the DOMException class from NodeJS diff --git a/node_modules/node-domexception/.history/README_20210527212714.md b/node_modules/node-domexception/.history/README_20210527212714.md new file mode 100644 index 0000000..eed1d13 --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527212714.md @@ -0,0 +1,41 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +This package implements the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class, from NodeJS itself. +NodeJS has DOMException built in, but it's not globally available, and you can't require/import it from somewhere. + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws an error and catch the constructor. +This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException. +The instanceof check would not have worked with a custom class such as the DOMexception provided by domenic which also is much larger in size. + +```js +import DOMException from 'node-domexception' + +hello().catch(err => { + if (err instanceof DOMException) { + ... + } +}) + +const e1 = new DOMException("Something went wrong", "BadThingsError"); +console.assert(e1.name === "BadThingsError"); +console.assert(e1.code === 0); + +const e2 = new DOMException("Another exciting error message", "NoModificationAllowedError"); +console.assert(e2.name === "NoModificationAllowedError"); +console.assert(e2.code === 7); + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10); +``` + +## APIs + +This package exposes two flavors of the `DOMException` interface depending on the imported module. + +### `domexception` module + +This module default-exports the `DOMException` interface constructor. + +### `domexception/webidl2js-wrapper` module + +This module exports the `DOMException` [interface wrapper API](https://github.com/jsdom/webidl2js#for-interfaces) generated by [webidl2js](https://github.com/jsdom/webidl2js). diff --git a/node_modules/node-domexception/.history/README_20210527213345.md b/node_modules/node-domexception/.history/README_20210527213345.md new file mode 100644 index 0000000..5825416 --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527213345.md @@ -0,0 +1,36 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +This package implements the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class, from NodeJS itself. (including the legacy codes) +NodeJS has DOMException built in, but it's not globally available, and you can't require/import it from somewhere. + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws an error and catch the constructor. +This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException. +The instanceof check would not have worked with a custom class such as the DOMException provided by domenic which also is much larger in size. + +```js +import DOMException from 'node-domexception' +import { MessageChannel } from 'worker_threads' + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) +``` diff --git a/node_modules/node-domexception/.history/README_20210527213411.md b/node_modules/node-domexception/.history/README_20210527213411.md new file mode 100644 index 0000000..4c21ec8 --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527213411.md @@ -0,0 +1,36 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +This package implements the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class that comes from NodeJS itself. (including the legacy codes) +NodeJS has DOMException built in, but it's not globally available, and you can't require/import it from somewhere. + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws an error and catch the constructor. +This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException. +The instanceof check would not have worked with a custom class such as the DOMException provided by domenic which also is much larger in size. + +```js +import DOMException from 'node-domexception' +import { MessageChannel } from 'worker_threads' + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) +``` diff --git a/node_modules/node-domexception/.history/README_20210527213803.md b/node_modules/node-domexception/.history/README_20210527213803.md new file mode 100644 index 0000000..4cb8571 --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527213803.md @@ -0,0 +1,36 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +This package exposes the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class that comes from NodeJS itself. (including all of the deprecated legacy codes) +NodeJS has it built in, but it's not globally available, and you can't require/import it from somewhere. + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws an error and catch the constructor. +This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException. +The instanceof check would not have worked with a custom class such as the DOMException provided by domenic which also is much larger in size since it has to re-construct the hole class from the ground up. + +```js +import DOMException from 'node-domexception' +import { MessageChannel } from 'worker_threads' + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) +``` diff --git a/node_modules/node-domexception/.history/README_20210527214323.md b/node_modules/node-domexception/.history/README_20210527214323.md new file mode 100644 index 0000000..a32a91b --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527214323.md @@ -0,0 +1,38 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +This package exposes the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class that comes from NodeJS itself. (including all of the deprecated legacy codes) +NodeJS has it built in, but it's not globally available, and you can't require/import it from somewhere. + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws an error and catch the constructor. +This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException. +The instanceof check would not have worked with a custom class such as the DOMException provided by domenic which also is much larger in size since it has to re-construct the hole class from the ground up. + +(plz don't depend on this package in any other environment other than node >=10.5) + +```js +import DOMException from 'node-domexception' +import { MessageChannel } from 'worker_threads' + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) +``` diff --git a/node_modules/node-domexception/.history/README_20210527214408.md b/node_modules/node-domexception/.history/README_20210527214408.md new file mode 100644 index 0000000..a32a91b --- /dev/null +++ b/node_modules/node-domexception/.history/README_20210527214408.md @@ -0,0 +1,38 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +This package exposes the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class that comes from NodeJS itself. (including all of the deprecated legacy codes) +NodeJS has it built in, but it's not globally available, and you can't require/import it from somewhere. + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws an error and catch the constructor. +This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException. +The instanceof check would not have worked with a custom class such as the DOMException provided by domenic which also is much larger in size since it has to re-construct the hole class from the ground up. + +(plz don't depend on this package in any other environment other than node >=10.5) + +```js +import DOMException from 'node-domexception' +import { MessageChannel } from 'worker_threads' + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) +``` diff --git a/node_modules/node-domexception/.history/index_20210527203842.js b/node_modules/node-domexception/.history/index_20210527203842.js new file mode 100644 index 0000000..e69de29 diff --git a/node_modules/node-domexception/.history/index_20210527203947.js b/node_modules/node-domexception/.history/index_20210527203947.js new file mode 100644 index 0000000..b9a8b76 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527203947.js @@ -0,0 +1,8 @@ +const { MessageChannel } = require('worker_threads') + +if (!globalThis.DOMException) { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { globalThis.DOMException = err.constructor } +} diff --git a/node_modules/node-domexception/.history/index_20210527204259.js b/node_modules/node-domexception/.history/index_20210527204259.js new file mode 100644 index 0000000..e9332a8 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527204259.js @@ -0,0 +1,9 @@ +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads') + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { globalThis.DOMException = err.constructor } +} + +module.exports diff --git a/node_modules/node-domexception/.history/index_20210527204418.js b/node_modules/node-domexception/.history/index_20210527204418.js new file mode 100644 index 0000000..cb362cc --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527204418.js @@ -0,0 +1,9 @@ +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads') + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { globalThis.DOMException = err.constructor } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527204756.js b/node_modules/node-domexception/.history/index_20210527204756.js new file mode 100644 index 0000000..87d2655 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527204756.js @@ -0,0 +1,11 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads') + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { globalThis.DOMException = err.constructor } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527204833.js b/node_modules/node-domexception/.history/index_20210527204833.js new file mode 100644 index 0000000..837ebda --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527204833.js @@ -0,0 +1,11 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads') + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { globalThis.DOMException = err.constructor } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527211208.js b/node_modules/node-domexception/.history/index_20210527211208.js new file mode 100644 index 0000000..ba215ce --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527211208.js @@ -0,0 +1,15 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + var { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527211248.js b/node_modules/node-domexception/.history/index_20210527211248.js new file mode 100644 index 0000000..f5c434e --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527211248.js @@ -0,0 +1,15 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527212722.js b/node_modules/node-domexception/.history/index_20210527212722.js new file mode 100644 index 0000000..91b3b52 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527212722.js @@ -0,0 +1,23 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException + +const e1 = new DOMException("Something went wrong", "BadThingsError"); +console.assert(e1.name === "BadThingsError"); +console.assert(e1.code === 0); + +const e2 = new DOMException("Another exciting error message", "NoModificationAllowedError"); +console.assert(e2.name === "NoModificationAllowedError"); +console.assert(e2.code === 7); diff --git a/node_modules/node-domexception/.history/index_20210527212731.js b/node_modules/node-domexception/.history/index_20210527212731.js new file mode 100644 index 0000000..cf28864 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527212731.js @@ -0,0 +1,23 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException + +const e1 = new DOMException("Something went wrong", "BadThingsError"); +console.assert(e1.name === "BadThingsError"); +console.assert(e1.code === 0); + +const e2 = new DOMException("Another exciting error message", "NoModificationAllowedError"); +console.assert(e2.name === "NoModificationAllowedError"); +console.assert(e2.code === 2); diff --git a/node_modules/node-domexception/.history/index_20210527212746.js b/node_modules/node-domexception/.history/index_20210527212746.js new file mode 100644 index 0000000..f5c434e --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527212746.js @@ -0,0 +1,15 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527212900.js b/node_modules/node-domexception/.history/index_20210527212900.js new file mode 100644 index 0000000..efa2442 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527212900.js @@ -0,0 +1,16 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + console.log(err.code) + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527213022.js b/node_modules/node-domexception/.history/index_20210527213022.js new file mode 100644 index 0000000..e59f047 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527213022.js @@ -0,0 +1,16 @@ +/*! blob-to-buffer. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + console.log(err.code, err.name, err.message) + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527213822.js b/node_modules/node-domexception/.history/index_20210527213822.js new file mode 100644 index 0000000..7f4e13d --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527213822.js @@ -0,0 +1,16 @@ +/*! node-DOMException. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + try { port.postMessage(ab, [ab, ab]) } + catch (err) { + console.log(err.code, err.name, err.message) + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527213843.js b/node_modules/node-domexception/.history/index_20210527213843.js new file mode 100644 index 0000000..ee75b73 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527213843.js @@ -0,0 +1,17 @@ +/*! node-DOMException. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + catch (err) { + console.log(err.code, err.name, err.message) + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527213852.js b/node_modules/node-domexception/.history/index_20210527213852.js new file mode 100644 index 0000000..a82bee3 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527213852.js @@ -0,0 +1,17 @@ +/*! node-DOMException. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + console.log(err.code, err.name, err.message) + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527213910.js b/node_modules/node-domexception/.history/index_20210527213910.js new file mode 100644 index 0000000..1e1ca29 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527213910.js @@ -0,0 +1,16 @@ +/*! node-DOMException. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527214034.js b/node_modules/node-domexception/.history/index_20210527214034.js new file mode 100644 index 0000000..b7bbe95 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527214034.js @@ -0,0 +1,16 @@ +/*! node-domexception. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/index_20210527214643.js b/node_modules/node-domexception/.history/index_20210527214643.js new file mode 100644 index 0000000..92ed847 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527214643.js @@ -0,0 +1,41 @@ +/*! node-domexception. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException + + +const { MessageChannel } = require('worker_threads') + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) diff --git a/node_modules/node-domexception/.history/index_20210527214654.js b/node_modules/node-domexception/.history/index_20210527214654.js new file mode 100644 index 0000000..6d5cb8e --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527214654.js @@ -0,0 +1,41 @@ +/*! node-domexception. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException + + +const { MessageChannel } = require('worker_threads') + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 21) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) diff --git a/node_modules/node-domexception/.history/index_20210527214700.js b/node_modules/node-domexception/.history/index_20210527214700.js new file mode 100644 index 0000000..b7bbe95 --- /dev/null +++ b/node_modules/node-domexception/.history/index_20210527214700.js @@ -0,0 +1,16 @@ +/*! node-domexception. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/.history/package_20210527203733.json b/node_modules/node-domexception/.history/package_20210527203733.json new file mode 100644 index 0000000..5eeb306 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527203733.json @@ -0,0 +1,19 @@ +{ + "name": "domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "author": "", + "license": "ISC", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme" +} diff --git a/node_modules/node-domexception/.history/package_20210527203825.json b/node_modules/node-domexception/.history/package_20210527203825.json new file mode 100644 index 0000000..4ca1713 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527203825.json @@ -0,0 +1,16 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme" +} diff --git a/node_modules/node-domexception/.history/package_20210527204621.json b/node_modules/node-domexception/.history/package_20210527204621.json new file mode 100644 index 0000000..3c414e9 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527204621.json @@ -0,0 +1,19 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "engines": { + "node": ">=10.5.0" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme" +} diff --git a/node_modules/node-domexception/.history/package_20210527204913.json b/node_modules/node-domexception/.history/package_20210527204913.json new file mode 100644 index 0000000..dbbb5d2 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527204913.json @@ -0,0 +1,25 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "engines": { + "node": ">=10.5.0" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme", + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/jimmywarting" + } + ] +} diff --git a/node_modules/node-domexception/.history/package_20210527204925.json b/node_modules/node-domexception/.history/package_20210527204925.json new file mode 100644 index 0000000..dbbb5d2 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527204925.json @@ -0,0 +1,25 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "engines": { + "node": ">=10.5.0" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme", + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/jimmywarting" + } + ] +} diff --git a/node_modules/node-domexception/.history/package_20210527205145.json b/node_modules/node-domexception/.history/package_20210527205145.json new file mode 100644 index 0000000..cd08e70 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527205145.json @@ -0,0 +1,29 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "engines": { + "node": ">=10.5.0" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme", + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/jimmywarting" + }, + { + "type": "github", + "url": "https://paypal.me/jimmywarting" + } + ] +} diff --git a/node_modules/node-domexception/.history/package_20210527205156.json b/node_modules/node-domexception/.history/package_20210527205156.json new file mode 100644 index 0000000..cd08e70 --- /dev/null +++ b/node_modules/node-domexception/.history/package_20210527205156.json @@ -0,0 +1,29 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "engines": { + "node": ">=10.5.0" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme", + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/jimmywarting" + }, + { + "type": "github", + "url": "https://paypal.me/jimmywarting" + } + ] +} diff --git a/node_modules/node-domexception/.history/test_20210527205603.js b/node_modules/node-domexception/.history/test_20210527205603.js new file mode 100644 index 0000000..e69de29 diff --git a/node_modules/node-domexception/.history/test_20210527205957.js b/node_modules/node-domexception/.history/test_20210527205957.js new file mode 100644 index 0000000..73feac5 --- /dev/null +++ b/node_modules/node-domexception/.history/test_20210527205957.js @@ -0,0 +1,3 @@ +require('./index.js') + +console.log(DOMException.INDEX_SIZE_ERR) diff --git a/node_modules/node-domexception/.history/test_20210527210021.js b/node_modules/node-domexception/.history/test_20210527210021.js new file mode 100644 index 0000000..be47491 --- /dev/null +++ b/node_modules/node-domexception/.history/test_20210527210021.js @@ -0,0 +1,3 @@ +const e = require('./index.js') + +console.log(e.INDEX_SIZE_ERR) diff --git a/node_modules/node-domexception/LICENSE b/node_modules/node-domexception/LICENSE new file mode 100644 index 0000000..bc8ceb7 --- /dev/null +++ b/node_modules/node-domexception/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2021 Jimmy Wärting + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/node-domexception/README.md b/node_modules/node-domexception/README.md new file mode 100644 index 0000000..a369461 --- /dev/null +++ b/node_modules/node-domexception/README.md @@ -0,0 +1,46 @@ +# DOMException +An implementation of the DOMException class from NodeJS + +NodeJS has DOMException built in, but it's not globally available, and you can't require/import it from somewhere. + +This package exposes the [`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException) class that comes from NodeJS itself. (including all of the legacy codes) + +(plz don't depend on this package in any other environment other than node >=10.5) + +```js +import DOMException from 'node-domexception' +import { MessageChannel } from 'worker_threads' + +async function hello() { + const port = new MessageChannel().port1 + const ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) +} + +hello().catch(err => { + console.assert(err.name === 'DataCloneError') + console.assert(err.code === 25) + console.assert(err instanceof DOMException) +}) + +const e1 = new DOMException('Something went wrong', 'BadThingsError') +console.assert(e1.name === 'BadThingsError') +console.assert(e1.code === 0) + +const e2 = new DOMException('Another exciting error message', 'NoModificationAllowedError') +console.assert(e2.name === 'NoModificationAllowedError') +console.assert(e2.code === 7) + +console.assert(DOMException.INUSE_ATTRIBUTE_ERR === 10) +``` + +# Background + +The only possible way is to use some web-ish tools that have been introduced into NodeJS that throws a DOMException and catch the constructor. This is exactly what this package dose for you and exposes it.
+This way you will have the same class that NodeJS has and you can check if the error is a instance of DOMException.
+The instanceof check would not have worked with a custom class such as the DOMException provided by domenic which also is much larger in size since it has to re-construct the hole class from the ground up. + +The DOMException is used in many places such as the Fetch API, File & Blobs, PostMessaging and more.
+Why they decided to call it **DOM**, I don't know + +Please consider sponsoring if you find this helpful diff --git a/node_modules/node-domexception/index.js b/node_modules/node-domexception/index.js new file mode 100644 index 0000000..b7bbe95 --- /dev/null +++ b/node_modules/node-domexception/index.js @@ -0,0 +1,16 @@ +/*! node-domexception. MIT License. Jimmy Wärting */ + +if (!globalThis.DOMException) { + try { + const { MessageChannel } = require('worker_threads'), + port = new MessageChannel().port1, + ab = new ArrayBuffer() + port.postMessage(ab, [ab, ab]) + } catch (err) { + err.constructor.name === 'DOMException' && ( + globalThis.DOMException = err.constructor + ) + } +} + +module.exports = globalThis.DOMException diff --git a/node_modules/node-domexception/package.json b/node_modules/node-domexception/package.json new file mode 100644 index 0000000..cd08e70 --- /dev/null +++ b/node_modules/node-domexception/package.json @@ -0,0 +1,29 @@ +{ + "name": "node-domexception", + "version": "1.0.0", + "description": "An implementation of the DOMException class from NodeJS", + "main": "index.js", + "repository": { + "type": "git", + "url": "git+https://github.com/jimmywarting/node-domexception.git" + }, + "engines": { + "node": ">=10.5.0" + }, + "author": "Jimmy Wärting", + "license": "MIT", + "bugs": { + "url": "https://github.com/jimmywarting/node-domexception/issues" + }, + "homepage": "https://github.com/jimmywarting/node-domexception#readme", + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/jimmywarting" + }, + { + "type": "github", + "url": "https://paypal.me/jimmywarting" + } + ] +} diff --git a/node_modules/node-fetch/@types/index.d.ts b/node_modules/node-fetch/@types/index.d.ts new file mode 100644 index 0000000..274ca03 --- /dev/null +++ b/node_modules/node-fetch/@types/index.d.ts @@ -0,0 +1,219 @@ +/// + +import {RequestOptions} from 'http'; +import {FormData} from 'formdata-polyfill/esm.min.js'; +import { + Blob, + blobFrom, + blobFromSync, + File, + fileFrom, + fileFromSync +} from 'fetch-blob/from.js'; + +type AbortSignal = { + readonly aborted: boolean; + + addEventListener: (type: 'abort', listener: (this: AbortSignal) => void) => void; + removeEventListener: (type: 'abort', listener: (this: AbortSignal) => void) => void; +}; + +export type HeadersInit = Headers | Record | Iterable | Iterable>; + +export { + FormData, + Blob, + blobFrom, + blobFromSync, + File, + fileFrom, + fileFromSync +}; + +/** + * This Fetch API interface allows you to perform various actions on HTTP request and response headers. + * These actions include retrieving, setting, adding to, and removing. + * A Headers object has an associated header list, which is initially empty and consists of zero or more name and value pairs. + * You can add to this using methods like append() (see Examples.) + * In all methods of this interface, header names are matched by case-insensitive byte sequence. + * */ +export class Headers { + constructor(init?: HeadersInit); + + append(name: string, value: string): void; + delete(name: string): void; + get(name: string): string | null; + has(name: string): boolean; + set(name: string, value: string): void; + forEach( + callbackfn: (value: string, key: string, parent: Headers) => void, + thisArg?: any + ): void; + + [Symbol.iterator](): IterableIterator<[string, string]>; + /** + * Returns an iterator allowing to go through all key/value pairs contained in this object. + */ + entries(): IterableIterator<[string, string]>; + /** + * Returns an iterator allowing to go through all keys of the key/value pairs contained in this object. + */ + keys(): IterableIterator; + /** + * Returns an iterator allowing to go through all values of the key/value pairs contained in this object. + */ + values(): IterableIterator; + + /** Node-fetch extension */ + raw(): Record; +} + +export interface RequestInit { + /** + * A BodyInit object or null to set request's body. + */ + body?: BodyInit | null; + /** + * A Headers object, an object literal, or an array of two-item arrays to set request's headers. + */ + headers?: HeadersInit; + /** + * A string to set request's method. + */ + method?: string; + /** + * A string indicating whether request follows redirects, results in an error upon encountering a redirect, or returns the redirect (in an opaque fashion). Sets request's redirect. + */ + redirect?: RequestRedirect; + /** + * An AbortSignal to set request's signal. + */ + signal?: AbortSignal | null; + /** + * A string whose value is a same-origin URL, "about:client", or the empty string, to set request’s referrer. + */ + referrer?: string; + /** + * A referrer policy to set request’s referrerPolicy. + */ + referrerPolicy?: ReferrerPolicy; + + // Node-fetch extensions to the whatwg/fetch spec + agent?: RequestOptions['agent'] | ((parsedUrl: URL) => RequestOptions['agent']); + compress?: boolean; + counter?: number; + follow?: number; + hostname?: string; + port?: number; + protocol?: string; + size?: number; + highWaterMark?: number; + insecureHTTPParser?: boolean; +} + +export interface ResponseInit { + headers?: HeadersInit; + status?: number; + statusText?: string; +} + +export type BodyInit = + | Blob + | Buffer + | URLSearchParams + | FormData + | NodeJS.ReadableStream + | string; +declare class BodyMixin { + constructor(body?: BodyInit, options?: {size?: number}); + + readonly body: NodeJS.ReadableStream | null; + readonly bodyUsed: boolean; + readonly size: number; + + /** @deprecated Use `body.arrayBuffer()` instead. */ + buffer(): Promise; + arrayBuffer(): Promise; + formData(): Promise; + blob(): Promise; + json(): Promise; + text(): Promise; +} + +// `Body` must not be exported as a class since it's not exported from the JavaScript code. +export interface Body extends Pick {} + +export type RequestRedirect = 'error' | 'follow' | 'manual'; +export type ReferrerPolicy = '' | 'no-referrer' | 'no-referrer-when-downgrade' | 'same-origin' | 'origin' | 'strict-origin' | 'origin-when-cross-origin' | 'strict-origin-when-cross-origin' | 'unsafe-url'; +export type RequestInfo = string | Request; +export class Request extends BodyMixin { + constructor(input: URL | RequestInfo, init?: RequestInit); + + /** + * Returns a Headers object consisting of the headers associated with request. Note that headers added in the network layer by the user agent will not be accounted for in this object, e.g., the "Host" header. + */ + readonly headers: Headers; + /** + * Returns request's HTTP method, which is "GET" by default. + */ + readonly method: string; + /** + * Returns the redirect mode associated with request, which is a string indicating how redirects for the request will be handled during fetching. A request will follow redirects by default. + */ + readonly redirect: RequestRedirect; + /** + * Returns the signal associated with request, which is an AbortSignal object indicating whether or not request has been aborted, and its abort event handler. + */ + readonly signal: AbortSignal; + /** + * Returns the URL of request as a string. + */ + readonly url: string; + /** + * A string whose value is a same-origin URL, "about:client", or the empty string, to set request’s referrer. + */ + readonly referrer: string; + /** + * A referrer policy to set request’s referrerPolicy. + */ + readonly referrerPolicy: ReferrerPolicy; + clone(): Request; +} + +type ResponseType = 'basic' | 'cors' | 'default' | 'error' | 'opaque' | 'opaqueredirect'; + +export class Response extends BodyMixin { + constructor(body?: BodyInit | null, init?: ResponseInit); + + readonly headers: Headers; + readonly ok: boolean; + readonly redirected: boolean; + readonly status: number; + readonly statusText: string; + readonly type: ResponseType; + readonly url: string; + clone(): Response; + + static error(): Response; + static redirect(url: string, status?: number): Response; + static json(data: any, init?: ResponseInit): Response; +} + +export class FetchError extends Error { + constructor(message: string, type: string, systemError?: Record); + + name: 'FetchError'; + [Symbol.toStringTag]: 'FetchError'; + type: string; + code?: string; + errno?: string; +} + +export class AbortError extends Error { + type: string; + name: 'AbortError'; + [Symbol.toStringTag]: 'AbortError'; +} + +export function isRedirect(code: number): boolean; +export default function fetch(url: URL | RequestInfo, init?: RequestInit): Promise; diff --git a/node_modules/node-fetch/LICENSE.md b/node_modules/node-fetch/LICENSE.md new file mode 100644 index 0000000..41ca1b6 --- /dev/null +++ b/node_modules/node-fetch/LICENSE.md @@ -0,0 +1,22 @@ +The MIT License (MIT) + +Copyright (c) 2016 - 2020 Node Fetch Team + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + diff --git a/node_modules/node-fetch/README.md b/node_modules/node-fetch/README.md new file mode 100644 index 0000000..badc2b1 --- /dev/null +++ b/node_modules/node-fetch/README.md @@ -0,0 +1,872 @@ +
+ Node Fetch +
+

A light-weight module that brings Fetch API to Node.js.

+ Build status + Coverage status + Current version + Install size + Mentioned in Awesome Node.js + Discord +
+
+ Consider supporting us on our Open Collective: +
+
+ Open Collective +
+ +--- + +**You might be looking for the [v2 docs](https://github.com/node-fetch/node-fetch/tree/2.x#readme)** + + + +- [Motivation](#motivation) +- [Features](#features) +- [Difference from client-side fetch](#difference-from-client-side-fetch) +- [Installation](#installation) +- [Loading and configuring the module](#loading-and-configuring-the-module) +- [Upgrading](#upgrading) +- [Common Usage](#common-usage) + - [Plain text or HTML](#plain-text-or-html) + - [JSON](#json) + - [Simple Post](#simple-post) + - [Post with JSON](#post-with-json) + - [Post with form parameters](#post-with-form-parameters) + - [Handling exceptions](#handling-exceptions) + - [Handling client and server errors](#handling-client-and-server-errors) + - [Handling cookies](#handling-cookies) +- [Advanced Usage](#advanced-usage) + - [Streams](#streams) + - [Accessing Headers and other Metadata](#accessing-headers-and-other-metadata) + - [Extract Set-Cookie Header](#extract-set-cookie-header) + - [Post data using a file](#post-data-using-a-file) + - [Request cancellation with AbortSignal](#request-cancellation-with-abortsignal) +- [API](#api) + - [fetch(url[, options])](#fetchurl-options) + - [Options](#options) + - [Default Headers](#default-headers) + - [Custom Agent](#custom-agent) + - [Custom highWaterMark](#custom-highwatermark) + - [Insecure HTTP Parser](#insecure-http-parser) + - [Class: Request](#class-request) + - [new Request(input[, options])](#new-requestinput-options) + - [Class: Response](#class-response) + - [new Response([body[, options]])](#new-responsebody-options) + - [response.ok](#responseok) + - [response.redirected](#responseredirected) + - [response.type](#responsetype) + - [Class: Headers](#class-headers) + - [new Headers([init])](#new-headersinit) + - [Interface: Body](#interface-body) + - [body.body](#bodybody) + - [body.bodyUsed](#bodybodyused) + - [body.arrayBuffer()](#bodyarraybuffer) + - [body.blob()](#bodyblob) + - [body.formData()](#formdata) + - [body.json()](#bodyjson) + - [body.text()](#bodytext) + - [Class: FetchError](#class-fetcherror) + - [Class: AbortError](#class-aborterror) +- [TypeScript](#typescript) +- [Acknowledgement](#acknowledgement) +- [Team](#team) + - [Former](#former) +- [License](#license) + + + +## Motivation + +Instead of implementing `XMLHttpRequest` in Node.js to run browser-specific [Fetch polyfill](https://github.com/github/fetch), why not go from native `http` to `fetch` API directly? Hence, `node-fetch`, minimal code for a `window.fetch` compatible API on Node.js runtime. + +See Jason Miller's [isomorphic-unfetch](https://www.npmjs.com/package/isomorphic-unfetch) or Leonardo Quixada's [cross-fetch](https://github.com/lquixada/cross-fetch) for isomorphic usage (exports `node-fetch` for server-side, `whatwg-fetch` for client-side). + +## Features + +- Stay consistent with `window.fetch` API. +- Make conscious trade-off when following [WHATWG fetch spec][whatwg-fetch] and [stream spec](https://streams.spec.whatwg.org/) implementation details, document known differences. +- Use native promise and async functions. +- Use native Node streams for body, on both request and response. +- Decode content encoding (gzip/deflate/brotli) properly, and convert string output (such as `res.text()` and `res.json()`) to UTF-8 automatically. +- Useful extensions such as redirect limit, response size limit, [explicit errors][error-handling.md] for troubleshooting. + +## Difference from client-side fetch + +- See known differences: + - [As of v3.x](docs/v3-LIMITS.md) + - [As of v2.x](docs/v2-LIMITS.md) +- If you happen to use a missing feature that `window.fetch` offers, feel free to open an issue. +- Pull requests are welcomed too! + +## Installation + +Current stable release (`3.x`) requires at least Node.js 12.20.0. + +```sh +npm install node-fetch +``` + +## Loading and configuring the module + +### ES Modules (ESM) + +```js +import fetch from 'node-fetch'; +``` + +### CommonJS + +`node-fetch` from v3 is an ESM-only module - you are not able to import it with `require()`. + +If you cannot switch to ESM, please use v2 which remains compatible with CommonJS. Critical bug fixes will continue to be published for v2. + +```sh +npm install node-fetch@2 +``` + +Alternatively, you can use the async `import()` function from CommonJS to load `node-fetch` asynchronously: + +```js +// mod.cjs +const fetch = (...args) => import('node-fetch').then(({default: fetch}) => fetch(...args)); +``` + +### Providing global access + +To use `fetch()` without importing it, you can patch the `global` object in node: + +```js +// fetch-polyfill.js +import fetch, { + Blob, + blobFrom, + blobFromSync, + File, + fileFrom, + fileFromSync, + FormData, + Headers, + Request, + Response, +} from 'node-fetch' + +if (!globalThis.fetch) { + globalThis.fetch = fetch + globalThis.Headers = Headers + globalThis.Request = Request + globalThis.Response = Response +} + +// index.js +import './fetch-polyfill' + +// ... +``` + +## Upgrading + +Using an old version of node-fetch? Check out the following files: + +- [2.x to 3.x upgrade guide](docs/v3-UPGRADE-GUIDE.md) +- [1.x to 2.x upgrade guide](docs/v2-UPGRADE-GUIDE.md) +- [Changelog](https://github.com/node-fetch/node-fetch/releases) + +## Common Usage + +NOTE: The documentation below is up-to-date with `3.x` releases, if you are using an older version, please check how to [upgrade](#upgrading). + +### Plain text or HTML + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://github.com/'); +const body = await response.text(); + +console.log(body); +``` + +### JSON + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://api.github.com/users/github'); +const data = await response.json(); + +console.log(data); +``` + +### Simple Post + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://httpbin.org/post', {method: 'POST', body: 'a=1'}); +const data = await response.json(); + +console.log(data); +``` + +### Post with JSON + +```js +import fetch from 'node-fetch'; + +const body = {a: 1}; + +const response = await fetch('https://httpbin.org/post', { + method: 'post', + body: JSON.stringify(body), + headers: {'Content-Type': 'application/json'} +}); +const data = await response.json(); + +console.log(data); +``` + +### Post with form parameters + +`URLSearchParams` is available on the global object in Node.js as of v10.0.0. See [official documentation](https://nodejs.org/api/url.html#url_class_urlsearchparams) for more usage methods. + +NOTE: The `Content-Type` header is only set automatically to `x-www-form-urlencoded` when an instance of `URLSearchParams` is given as such: + +```js +import fetch from 'node-fetch'; + +const params = new URLSearchParams(); +params.append('a', 1); + +const response = await fetch('https://httpbin.org/post', {method: 'POST', body: params}); +const data = await response.json(); + +console.log(data); +``` + +### Handling exceptions + +NOTE: 3xx-5xx responses are _NOT_ exceptions, and should be handled in `then()`, see the next section. + +Wrapping the fetch function into a `try/catch` block will catch _all_ exceptions, such as errors originating from node core libraries, like network errors, and operational errors which are instances of FetchError. See the [error handling document][error-handling.md] for more details. + +```js +import fetch from 'node-fetch'; + +try { + await fetch('https://domain.invalid/'); +} catch (error) { + console.log(error); +} +``` + +### Handling client and server errors + +It is common to create a helper function to check that the response contains no client (4xx) or server (5xx) error responses: + +```js +import fetch from 'node-fetch'; + +class HTTPResponseError extends Error { + constructor(response) { + super(`HTTP Error Response: ${response.status} ${response.statusText}`); + this.response = response; + } +} + +const checkStatus = response => { + if (response.ok) { + // response.status >= 200 && response.status < 300 + return response; + } else { + throw new HTTPResponseError(response); + } +} + +const response = await fetch('https://httpbin.org/status/400'); + +try { + checkStatus(response); +} catch (error) { + console.error(error); + + const errorBody = await error.response.text(); + console.error(`Error body: ${errorBody}`); +} +``` + +### Handling cookies + +Cookies are not stored by default. However, cookies can be extracted and passed by manipulating request and response headers. See [Extract Set-Cookie Header](#extract-set-cookie-header) for details. + +## Advanced Usage + +### Streams + +The "Node.js way" is to use streams when possible. You can pipe `res.body` to another stream. This example uses [stream.pipeline](https://nodejs.org/api/stream.html#stream_stream_pipeline_streams_callback) to attach stream error handlers and wait for the download to complete. + +```js +import {createWriteStream} from 'node:fs'; +import {pipeline} from 'node:stream'; +import {promisify} from 'node:util' +import fetch from 'node-fetch'; + +const streamPipeline = promisify(pipeline); + +const response = await fetch('https://github.githubassets.com/images/modules/logos_page/Octocat.png'); + +if (!response.ok) throw new Error(`unexpected response ${response.statusText}`); + +await streamPipeline(response.body, createWriteStream('./octocat.png')); +``` + +In Node.js 14 you can also use async iterators to read `body`; however, be careful to catch +errors -- the longer a response runs, the more likely it is to encounter an error. + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://httpbin.org/stream/3'); + +try { + for await (const chunk of response.body) { + console.dir(JSON.parse(chunk.toString())); + } +} catch (err) { + console.error(err.stack); +} +``` + +In Node.js 12 you can also use async iterators to read `body`; however, async iterators with streams +did not mature until Node.js 14, so you need to do some extra work to ensure you handle errors +directly from the stream and wait on it response to fully close. + +```js +import fetch from 'node-fetch'; + +const read = async body => { + let error; + body.on('error', err => { + error = err; + }); + + for await (const chunk of body) { + console.dir(JSON.parse(chunk.toString())); + } + + return new Promise((resolve, reject) => { + body.on('close', () => { + error ? reject(error) : resolve(); + }); + }); +}; + +try { + const response = await fetch('https://httpbin.org/stream/3'); + await read(response.body); +} catch (err) { + console.error(err.stack); +} +``` + +### Accessing Headers and other Metadata + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://github.com/'); + +console.log(response.ok); +console.log(response.status); +console.log(response.statusText); +console.log(response.headers.raw()); +console.log(response.headers.get('content-type')); +``` + +### Extract Set-Cookie Header + +Unlike browsers, you can access raw `Set-Cookie` headers manually using `Headers.raw()`. This is a `node-fetch` only API. + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://example.com'); + +// Returns an array of values, instead of a string of comma-separated values +console.log(response.headers.raw()['set-cookie']); +``` + +### Post data using a file + +```js +import fetch, { + Blob, + blobFrom, + blobFromSync, + File, + fileFrom, + fileFromSync, +} from 'node-fetch' + +const mimetype = 'text/plain' +const blob = fileFromSync('./input.txt', mimetype) +const url = 'https://httpbin.org/post' + +const response = await fetch(url, { method: 'POST', body: blob }) +const data = await response.json() + +console.log(data) +``` + +node-fetch comes with a spec-compliant [FormData] implementations for posting +multipart/form-data payloads + +```js +import fetch, { FormData, File, fileFrom } from 'node-fetch' + +const httpbin = 'https://httpbin.org/post' +const formData = new FormData() +const binary = new Uint8Array([ 97, 98, 99 ]) +const abc = new File([binary], 'abc.txt', { type: 'text/plain' }) + +formData.set('greeting', 'Hello, world!') +formData.set('file-upload', abc, 'new name.txt') + +const response = await fetch(httpbin, { method: 'POST', body: formData }) +const data = await response.json() + +console.log(data) +``` + +If you for some reason need to post a stream coming from any arbitrary place, +then you can append a [Blob] or a [File] look-a-like item. + +The minimum requirement is that it has: +1. A `Symbol.toStringTag` getter or property that is either `Blob` or `File` +2. A known size. +3. And either a `stream()` method or a `arrayBuffer()` method that returns a ArrayBuffer. + +The `stream()` must return any async iterable object as long as it yields Uint8Array (or Buffer) +so Node.Readable streams and whatwg streams works just fine. + +```js +formData.append('upload', { + [Symbol.toStringTag]: 'Blob', + size: 3, + *stream() { + yield new Uint8Array([97, 98, 99]) + }, + arrayBuffer() { + return new Uint8Array([97, 98, 99]).buffer + } +}, 'abc.txt') +``` + +### Request cancellation with AbortSignal + +You may cancel requests with `AbortController`. A suggested implementation is [`abort-controller`](https://www.npmjs.com/package/abort-controller). + +An example of timing out a request after 150ms could be achieved as the following: + +```js +import fetch, { AbortError } from 'node-fetch'; + +// AbortController was added in node v14.17.0 globally +const AbortController = globalThis.AbortController || await import('abort-controller') + +const controller = new AbortController(); +const timeout = setTimeout(() => { + controller.abort(); +}, 150); + +try { + const response = await fetch('https://example.com', {signal: controller.signal}); + const data = await response.json(); +} catch (error) { + if (error instanceof AbortError) { + console.log('request was aborted'); + } +} finally { + clearTimeout(timeout); +} +``` + +See [test cases](https://github.com/node-fetch/node-fetch/blob/master/test/) for more examples. + +## API + +### fetch(url[, options]) + +- `url` A string representing the URL for fetching +- `options` [Options](#fetch-options) for the HTTP(S) request +- Returns: Promise<[Response](#class-response)> + +Perform an HTTP(S) fetch. + +`url` should be an absolute URL, such as `https://example.com/`. A path-relative URL (`/file/under/root`) or protocol-relative URL (`//can-be-http-or-https.com/`) will result in a rejected `Promise`. + + + +### Options + +The default values are shown after each option key. + +```js +{ + // These properties are part of the Fetch Standard + method: 'GET', + headers: {}, // Request headers. format is the identical to that accepted by the Headers constructor (see below) + body: null, // Request body. can be null, or a Node.js Readable stream + redirect: 'follow', // Set to `manual` to extract redirect headers, `error` to reject redirect + signal: null, // Pass an instance of AbortSignal to optionally abort requests + + // The following properties are node-fetch extensions + follow: 20, // maximum redirect count. 0 to not follow redirect + compress: true, // support gzip/deflate content encoding. false to disable + size: 0, // maximum response body size in bytes. 0 to disable + agent: null, // http(s).Agent instance or function that returns an instance (see below) + highWaterMark: 16384, // the maximum number of bytes to store in the internal buffer before ceasing to read from the underlying resource. + insecureHTTPParser: false // Use an insecure HTTP parser that accepts invalid HTTP headers when `true`. +} +``` + +#### Default Headers + +If no values are set, the following request headers will be sent automatically: + +| Header | Value | +| ------------------- | ------------------------------------------------------ | +| `Accept-Encoding` | `gzip, deflate, br` (when `options.compress === true`) | +| `Accept` | `*/*` | +| `Content-Length` | _(automatically calculated, if possible)_ | +| `Host` | _(host and port information from the target URI)_ | +| `Transfer-Encoding` | `chunked` _(when `req.body` is a stream)_ | +| `User-Agent` | `node-fetch` | + + +Note: when `body` is a `Stream`, `Content-Length` is not set automatically. + +#### Custom Agent + +The `agent` option allows you to specify networking related options which are out of the scope of Fetch, including and not limited to the following: + +- Support self-signed certificate +- Use only IPv4 or IPv6 +- Custom DNS Lookup + +See [`http.Agent`](https://nodejs.org/api/http.html#http_new_agent_options) for more information. + +If no agent is specified, the default agent provided by Node.js is used. Note that [this changed in Node.js 19](https://github.com/nodejs/node/blob/4267b92604ad78584244488e7f7508a690cb80d0/lib/_http_agent.js#L564) to have `keepalive` true by default. If you wish to enable `keepalive` in an earlier version of Node.js, you can override the agent as per the following code sample. + +In addition, the `agent` option accepts a function that returns `http`(s)`.Agent` instance given current [URL](https://nodejs.org/api/url.html), this is useful during a redirection chain across HTTP and HTTPS protocol. + +```js +import http from 'node:http'; +import https from 'node:https'; + +const httpAgent = new http.Agent({ + keepAlive: true +}); +const httpsAgent = new https.Agent({ + keepAlive: true +}); + +const options = { + agent: function(_parsedURL) { + if (_parsedURL.protocol == 'http:') { + return httpAgent; + } else { + return httpsAgent; + } + } +}; +``` + + + +#### Custom highWaterMark + +Stream on Node.js have a smaller internal buffer size (16kB, aka `highWaterMark`) from client-side browsers (>1MB, not consistent across browsers). Because of that, when you are writing an isomorphic app and using `res.clone()`, it will hang with large response in Node. + +The recommended way to fix this problem is to resolve cloned response in parallel: + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://example.com'); +const r1 = response.clone(); + +const results = await Promise.all([response.json(), r1.text()]); + +console.log(results[0]); +console.log(results[1]); +``` + +If for some reason you don't like the solution above, since `3.x` you are able to modify the `highWaterMark` option: + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://example.com', { + // About 1MB + highWaterMark: 1024 * 1024 +}); + +const result = await res.clone().arrayBuffer(); +console.dir(result); +``` + +#### Insecure HTTP Parser + +Passed through to the `insecureHTTPParser` option on http(s).request. See [`http.request`](https://nodejs.org/api/http.html#http_http_request_url_options_callback) for more information. + +#### Manual Redirect + +The `redirect: 'manual'` option for node-fetch is different from the browser & specification, which +results in an [opaque-redirect filtered response](https://fetch.spec.whatwg.org/#concept-filtered-response-opaque-redirect). +node-fetch gives you the typical [basic filtered response](https://fetch.spec.whatwg.org/#concept-filtered-response-basic) instead. + +```js +import fetch from 'node-fetch'; + +const response = await fetch('https://httpbin.org/status/301', { redirect: 'manual' }); + +if (response.status === 301 || response.status === 302) { + const locationURL = new URL(response.headers.get('location'), response.url); + const response2 = await fetch(locationURL, { redirect: 'manual' }); + console.dir(response2); +} +``` + + + +### Class: Request + +An HTTP(S) request containing information about URL, method, headers, and the body. This class implements the [Body](#iface-body) interface. + +Due to the nature of Node.js, the following properties are not implemented at this moment: + +- `type` +- `destination` +- `mode` +- `credentials` +- `cache` +- `integrity` +- `keepalive` + +The following node-fetch extension properties are provided: + +- `follow` +- `compress` +- `counter` +- `agent` +- `highWaterMark` + +See [options](#fetch-options) for exact meaning of these extensions. + +#### new Request(input[, options]) + +_(spec-compliant)_ + +- `input` A string representing a URL, or another `Request` (which will be cloned) +- `options` [Options](#fetch-options) for the HTTP(S) request + +Constructs a new `Request` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Request/Request). + +In most cases, directly `fetch(url, options)` is simpler than creating a `Request` object. + + + +### Class: Response + +An HTTP(S) response. This class implements the [Body](#iface-body) interface. + +The following properties are not implemented in node-fetch at this moment: + +- `trailer` + +#### new Response([body[, options]]) + +_(spec-compliant)_ + +- `body` A `String` or [`Readable` stream][node-readable] +- `options` A [`ResponseInit`][response-init] options dictionary + +Constructs a new `Response` object. The constructor is identical to that in the [browser](https://developer.mozilla.org/en-US/docs/Web/API/Response/Response). + +Because Node.js does not implement service workers (for which this class was designed), one rarely has to construct a `Response` directly. + +#### response.ok + +_(spec-compliant)_ + +Convenience property representing if the request ended normally. Will evaluate to true if the response status was greater than or equal to 200 but smaller than 300. + +#### response.redirected + +_(spec-compliant)_ + +Convenience property representing if the request has been redirected at least once. Will evaluate to true if the internal redirect counter is greater than 0. + +#### response.type + +_(deviation from spec)_ + +Convenience property representing the response's type. node-fetch only supports `'default'` and `'error'` and does not make use of [filtered responses](https://fetch.spec.whatwg.org/#concept-filtered-response). + + + +### Class: Headers + +This class allows manipulating and iterating over a set of HTTP headers. All methods specified in the [Fetch Standard][whatwg-fetch] are implemented. + +#### new Headers([init]) + +_(spec-compliant)_ + +- `init` Optional argument to pre-fill the `Headers` object + +Construct a new `Headers` object. `init` can be either `null`, a `Headers` object, an key-value map object or any iterable object. + +```js +// Example adapted from https://fetch.spec.whatwg.org/#example-headers-class +import {Headers} from 'node-fetch'; + +const meta = { + 'Content-Type': 'text/xml' +}; +const headers = new Headers(meta); + +// The above is equivalent to +const meta = [['Content-Type', 'text/xml']]; +const headers = new Headers(meta); + +// You can in fact use any iterable objects, like a Map or even another Headers +const meta = new Map(); +meta.set('Content-Type', 'text/xml'); +const headers = new Headers(meta); +const copyOfHeaders = new Headers(headers); +``` + + + +### Interface: Body + +`Body` is an abstract interface with methods that are applicable to both `Request` and `Response` classes. + +#### body.body + +_(deviation from spec)_ + +- Node.js [`Readable` stream][node-readable] + +Data are encapsulated in the `Body` object. Note that while the [Fetch Standard][whatwg-fetch] requires the property to always be a WHATWG `ReadableStream`, in node-fetch it is a Node.js [`Readable` stream][node-readable]. + +#### body.bodyUsed + +_(spec-compliant)_ + +- `Boolean` + +A boolean property for if this body has been consumed. Per the specs, a consumed body cannot be used again. + +#### body.arrayBuffer() + +#### body.formData() + +#### body.blob() + +#### body.json() + +#### body.text() + +`fetch` comes with methods to parse `multipart/form-data` payloads as well as +`x-www-form-urlencoded` bodies using `.formData()` this comes from the idea that +Service Worker can intercept such messages before it's sent to the server to +alter them. This is useful for anybody building a server so you can use it to +parse & consume payloads. + +
+Code example + +```js +import http from 'node:http' +import { Response } from 'node-fetch' + +http.createServer(async function (req, res) { + const formData = await new Response(req, { + headers: req.headers // Pass along the boundary value + }).formData() + const allFields = [...formData] + + const file = formData.get('uploaded-files') + const arrayBuffer = await file.arrayBuffer() + const text = await file.text() + const whatwgReadableStream = file.stream() + + // other was to consume the request could be to do: + const json = await new Response(req).json() + const text = await new Response(req).text() + const arrayBuffer = await new Response(req).arrayBuffer() + const blob = await new Response(req, { + headers: req.headers // So that `type` inherits `Content-Type` + }.blob() +}) +``` + +
+ + + +### Class: FetchError + +_(node-fetch extension)_ + +An operational error in the fetching process. See [ERROR-HANDLING.md][] for more info. + + + +### Class: AbortError + +_(node-fetch extension)_ + +An Error thrown when the request is aborted in response to an `AbortSignal`'s `abort` event. It has a `name` property of `AbortError`. See [ERROR-HANDLING.MD][] for more info. + +## TypeScript + +**Since `3.x` types are bundled with `node-fetch`, so you don't need to install any additional packages.** + +For older versions please use the type definitions from [DefinitelyTyped](https://github.com/DefinitelyTyped/DefinitelyTyped): + +```sh +npm install --save-dev @types/node-fetch@2.x +``` + +## Acknowledgement + +Thanks to [github/fetch](https://github.com/github/fetch) for providing a solid implementation reference. + +## Team + +| [![David Frank](https://github.com/bitinn.png?size=100)](https://github.com/bitinn) | [![Jimmy Wärting](https://github.com/jimmywarting.png?size=100)](https://github.com/jimmywarting) | [![Antoni Kepinski](https://github.com/xxczaki.png?size=100)](https://github.com/xxczaki) | [![Richie Bendall](https://github.com/Richienb.png?size=100)](https://github.com/Richienb) | [![Gregor Martynus](https://github.com/gr2m.png?size=100)](https://github.com/gr2m) | +| ----------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------- | +| [David Frank](https://bitinn.net/) | [Jimmy Wärting](https://jimmy.warting.se/) | [Antoni Kepinski](https://kepinski.ch) | [Richie Bendall](https://www.richie-bendall.ml/) | [Gregor Martynus](https://twitter.com/gr2m) | + +###### Former + +- [Timothy Gu](https://github.com/timothygu) +- [Jared Kantrowitz](https://github.com/jkantr) + +## License + +[MIT](LICENSE.md) + +[whatwg-fetch]: https://fetch.spec.whatwg.org/ +[response-init]: https://fetch.spec.whatwg.org/#responseinit +[node-readable]: https://nodejs.org/api/stream.html#stream_readable_streams +[mdn-headers]: https://developer.mozilla.org/en-US/docs/Web/API/Headers +[error-handling.md]: https://github.com/node-fetch/node-fetch/blob/master/docs/ERROR-HANDLING.md +[FormData]: https://developer.mozilla.org/en-US/docs/Web/API/FormData +[Blob]: https://developer.mozilla.org/en-US/docs/Web/API/Blob +[File]: https://developer.mozilla.org/en-US/docs/Web/API/File diff --git a/node_modules/node-fetch/package.json b/node_modules/node-fetch/package.json new file mode 100644 index 0000000..2b4e858 --- /dev/null +++ b/node_modules/node-fetch/package.json @@ -0,0 +1,131 @@ +{ + "name": "node-fetch", + "version": "3.3.2", + "description": "A light-weight module that brings Fetch API to node.js", + "main": "./src/index.js", + "sideEffects": false, + "type": "module", + "files": [ + "src", + "@types/index.d.ts" + ], + "types": "./@types/index.d.ts", + "engines": { + "node": "^12.20.0 || ^14.13.1 || >=16.0.0" + }, + "scripts": { + "test": "mocha", + "coverage": "c8 report --reporter=text-lcov | coveralls", + "test-types": "tsd", + "lint": "xo" + }, + "repository": { + "type": "git", + "url": "https://github.com/node-fetch/node-fetch.git" + }, + "keywords": [ + "fetch", + "http", + "promise", + "request", + "curl", + "wget", + "xhr", + "whatwg" + ], + "author": "David Frank", + "license": "MIT", + "bugs": { + "url": "https://github.com/node-fetch/node-fetch/issues" + }, + "homepage": "https://github.com/node-fetch/node-fetch", + "funding": { + "type": "opencollective", + "url": "https://opencollective.com/node-fetch" + }, + "devDependencies": { + "abort-controller": "^3.0.0", + "abortcontroller-polyfill": "^1.7.1", + "busboy": "^1.4.0", + "c8": "^7.7.2", + "chai": "^4.3.4", + "chai-as-promised": "^7.1.1", + "chai-iterator": "^3.0.2", + "chai-string": "^1.5.0", + "coveralls": "^3.1.0", + "form-data": "^4.0.0", + "formdata-node": "^4.2.4", + "mocha": "^9.1.3", + "p-timeout": "^5.0.0", + "stream-consumers": "^1.0.1", + "tsd": "^0.14.0", + "xo": "^0.39.1" + }, + "dependencies": { + "data-uri-to-buffer": "^4.0.0", + "fetch-blob": "^3.1.4", + "formdata-polyfill": "^4.0.10" + }, + "tsd": { + "cwd": "@types", + "compilerOptions": { + "esModuleInterop": true + } + }, + "xo": { + "envs": [ + "node", + "browser" + ], + "ignores": [ + "example.js" + ], + "rules": { + "complexity": 0, + "import/extensions": 0, + "import/no-useless-path-segments": 0, + "import/no-anonymous-default-export": 0, + "import/no-named-as-default": 0, + "unicorn/import-index": 0, + "unicorn/no-array-reduce": 0, + "unicorn/prefer-node-protocol": 0, + "unicorn/numeric-separators-style": 0, + "unicorn/explicit-length-check": 0, + "capitalized-comments": 0, + "node/no-unsupported-features/es-syntax": 0, + "@typescript-eslint/member-ordering": 0 + }, + "overrides": [ + { + "files": "test/**/*.js", + "envs": [ + "node", + "mocha" + ], + "rules": { + "max-nested-callbacks": 0, + "no-unused-expressions": 0, + "no-warning-comments": 0, + "new-cap": 0, + "guard-for-in": 0, + "unicorn/no-array-for-each": 0, + "unicorn/prevent-abbreviations": 0, + "promise/prefer-await-to-then": 0, + "ava/no-import-test-files": 0 + } + } + ] + }, + "runkitExampleFilename": "example.js", + "release": { + "branches": [ + "+([0-9]).x", + "main", + "next", + { + "name": "beta", + "prerelease": true + } + ] + } +} diff --git a/node_modules/node-fetch/src/body.js b/node_modules/node-fetch/src/body.js new file mode 100644 index 0000000..714e27e --- /dev/null +++ b/node_modules/node-fetch/src/body.js @@ -0,0 +1,397 @@ + +/** + * Body.js + * + * Body interface provides common methods for Request and Response + */ + +import Stream, {PassThrough} from 'node:stream'; +import {types, deprecate, promisify} from 'node:util'; +import {Buffer} from 'node:buffer'; + +import Blob from 'fetch-blob'; +import {FormData, formDataToBlob} from 'formdata-polyfill/esm.min.js'; + +import {FetchError} from './errors/fetch-error.js'; +import {FetchBaseError} from './errors/base.js'; +import {isBlob, isURLSearchParameters} from './utils/is.js'; + +const pipeline = promisify(Stream.pipeline); +const INTERNALS = Symbol('Body internals'); + +/** + * Body mixin + * + * Ref: https://fetch.spec.whatwg.org/#body + * + * @param Stream body Readable stream + * @param Object opts Response options + * @return Void + */ +export default class Body { + constructor(body, { + size = 0 + } = {}) { + let boundary = null; + + if (body === null) { + // Body is undefined or null + body = null; + } else if (isURLSearchParameters(body)) { + // Body is a URLSearchParams + body = Buffer.from(body.toString()); + } else if (isBlob(body)) { + // Body is blob + } else if (Buffer.isBuffer(body)) { + // Body is Buffer + } else if (types.isAnyArrayBuffer(body)) { + // Body is ArrayBuffer + body = Buffer.from(body); + } else if (ArrayBuffer.isView(body)) { + // Body is ArrayBufferView + body = Buffer.from(body.buffer, body.byteOffset, body.byteLength); + } else if (body instanceof Stream) { + // Body is stream + } else if (body instanceof FormData) { + // Body is FormData + body = formDataToBlob(body); + boundary = body.type.split('=')[1]; + } else { + // None of the above + // coerce to string then buffer + body = Buffer.from(String(body)); + } + + let stream = body; + + if (Buffer.isBuffer(body)) { + stream = Stream.Readable.from(body); + } else if (isBlob(body)) { + stream = Stream.Readable.from(body.stream()); + } + + this[INTERNALS] = { + body, + stream, + boundary, + disturbed: false, + error: null + }; + this.size = size; + + if (body instanceof Stream) { + body.on('error', error_ => { + const error = error_ instanceof FetchBaseError ? + error_ : + new FetchError(`Invalid response body while trying to fetch ${this.url}: ${error_.message}`, 'system', error_); + this[INTERNALS].error = error; + }); + } + } + + get body() { + return this[INTERNALS].stream; + } + + get bodyUsed() { + return this[INTERNALS].disturbed; + } + + /** + * Decode response as ArrayBuffer + * + * @return Promise + */ + async arrayBuffer() { + const {buffer, byteOffset, byteLength} = await consumeBody(this); + return buffer.slice(byteOffset, byteOffset + byteLength); + } + + async formData() { + const ct = this.headers.get('content-type'); + + if (ct.startsWith('application/x-www-form-urlencoded')) { + const formData = new FormData(); + const parameters = new URLSearchParams(await this.text()); + + for (const [name, value] of parameters) { + formData.append(name, value); + } + + return formData; + } + + const {toFormData} = await import('./utils/multipart-parser.js'); + return toFormData(this.body, ct); + } + + /** + * Return raw response as Blob + * + * @return Promise + */ + async blob() { + const ct = (this.headers && this.headers.get('content-type')) || (this[INTERNALS].body && this[INTERNALS].body.type) || ''; + const buf = await this.arrayBuffer(); + + return new Blob([buf], { + type: ct + }); + } + + /** + * Decode response as json + * + * @return Promise + */ + async json() { + const text = await this.text(); + return JSON.parse(text); + } + + /** + * Decode response as text + * + * @return Promise + */ + async text() { + const buffer = await consumeBody(this); + return new TextDecoder().decode(buffer); + } + + /** + * Decode response as buffer (non-spec api) + * + * @return Promise + */ + buffer() { + return consumeBody(this); + } +} + +Body.prototype.buffer = deprecate(Body.prototype.buffer, 'Please use \'response.arrayBuffer()\' instead of \'response.buffer()\'', 'node-fetch#buffer'); + +// In browsers, all properties are enumerable. +Object.defineProperties(Body.prototype, { + body: {enumerable: true}, + bodyUsed: {enumerable: true}, + arrayBuffer: {enumerable: true}, + blob: {enumerable: true}, + json: {enumerable: true}, + text: {enumerable: true}, + data: {get: deprecate(() => {}, + 'data doesn\'t exist, use json(), text(), arrayBuffer(), or body instead', + 'https://github.com/node-fetch/node-fetch/issues/1000 (response)')} +}); + +/** + * Consume and convert an entire Body to a Buffer. + * + * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body + * + * @return Promise + */ +async function consumeBody(data) { + if (data[INTERNALS].disturbed) { + throw new TypeError(`body used already for: ${data.url}`); + } + + data[INTERNALS].disturbed = true; + + if (data[INTERNALS].error) { + throw data[INTERNALS].error; + } + + const {body} = data; + + // Body is null + if (body === null) { + return Buffer.alloc(0); + } + + /* c8 ignore next 3 */ + if (!(body instanceof Stream)) { + return Buffer.alloc(0); + } + + // Body is stream + // get ready to actually consume the body + const accum = []; + let accumBytes = 0; + + try { + for await (const chunk of body) { + if (data.size > 0 && accumBytes + chunk.length > data.size) { + const error = new FetchError(`content size at ${data.url} over limit: ${data.size}`, 'max-size'); + body.destroy(error); + throw error; + } + + accumBytes += chunk.length; + accum.push(chunk); + } + } catch (error) { + const error_ = error instanceof FetchBaseError ? error : new FetchError(`Invalid response body while trying to fetch ${data.url}: ${error.message}`, 'system', error); + throw error_; + } + + if (body.readableEnded === true || body._readableState.ended === true) { + try { + if (accum.every(c => typeof c === 'string')) { + return Buffer.from(accum.join('')); + } + + return Buffer.concat(accum, accumBytes); + } catch (error) { + throw new FetchError(`Could not create Buffer from response body for ${data.url}: ${error.message}`, 'system', error); + } + } else { + throw new FetchError(`Premature close of server response while trying to fetch ${data.url}`); + } +} + +/** + * Clone body given Res/Req instance + * + * @param Mixed instance Response or Request instance + * @param String highWaterMark highWaterMark for both PassThrough body streams + * @return Mixed + */ +export const clone = (instance, highWaterMark) => { + let p1; + let p2; + let {body} = instance[INTERNALS]; + + // Don't allow cloning a used body + if (instance.bodyUsed) { + throw new Error('cannot clone body after it is used'); + } + + // Check that body is a stream and not form-data object + // note: we can't clone the form-data object without having it as a dependency + if ((body instanceof Stream) && (typeof body.getBoundary !== 'function')) { + // Tee instance body + p1 = new PassThrough({highWaterMark}); + p2 = new PassThrough({highWaterMark}); + body.pipe(p1); + body.pipe(p2); + // Set instance body to teed body and return the other teed body + instance[INTERNALS].stream = p1; + body = p2; + } + + return body; +}; + +const getNonSpecFormDataBoundary = deprecate( + body => body.getBoundary(), + 'form-data doesn\'t follow the spec and requires special treatment. Use alternative package', + 'https://github.com/node-fetch/node-fetch/issues/1167' +); + +/** + * Performs the operation "extract a `Content-Type` value from |object|" as + * specified in the specification: + * https://fetch.spec.whatwg.org/#concept-bodyinit-extract + * + * This function assumes that instance.body is present. + * + * @param {any} body Any options.body input + * @returns {string | null} + */ +export const extractContentType = (body, request) => { + // Body is null or undefined + if (body === null) { + return null; + } + + // Body is string + if (typeof body === 'string') { + return 'text/plain;charset=UTF-8'; + } + + // Body is a URLSearchParams + if (isURLSearchParameters(body)) { + return 'application/x-www-form-urlencoded;charset=UTF-8'; + } + + // Body is blob + if (isBlob(body)) { + return body.type || null; + } + + // Body is a Buffer (Buffer, ArrayBuffer or ArrayBufferView) + if (Buffer.isBuffer(body) || types.isAnyArrayBuffer(body) || ArrayBuffer.isView(body)) { + return null; + } + + if (body instanceof FormData) { + return `multipart/form-data; boundary=${request[INTERNALS].boundary}`; + } + + // Detect form data input from form-data module + if (body && typeof body.getBoundary === 'function') { + return `multipart/form-data;boundary=${getNonSpecFormDataBoundary(body)}`; + } + + // Body is stream - can't really do much about this + if (body instanceof Stream) { + return null; + } + + // Body constructor defaults other things to string + return 'text/plain;charset=UTF-8'; +}; + +/** + * The Fetch Standard treats this as if "total bytes" is a property on the body. + * For us, we have to explicitly get it with a function. + * + * ref: https://fetch.spec.whatwg.org/#concept-body-total-bytes + * + * @param {any} obj.body Body object from the Body instance. + * @returns {number | null} + */ +export const getTotalBytes = request => { + const {body} = request[INTERNALS]; + + // Body is null or undefined + if (body === null) { + return 0; + } + + // Body is Blob + if (isBlob(body)) { + return body.size; + } + + // Body is Buffer + if (Buffer.isBuffer(body)) { + return body.length; + } + + // Detect form data input from form-data module + if (body && typeof body.getLengthSync === 'function') { + return body.hasKnownLength && body.hasKnownLength() ? body.getLengthSync() : null; + } + + // Body is stream + return null; +}; + +/** + * Write a Body to a Node.js WritableStream (e.g. http.Request) object. + * + * @param {Stream.Writable} dest The stream to write to. + * @param obj.body Body object from the Body instance. + * @returns {Promise} + */ +export const writeToStream = async (dest, {body}) => { + if (body === null) { + // Body is null + dest.end(); + } else { + // Body is stream + await pipeline(body, dest); + } +}; diff --git a/node_modules/node-fetch/src/errors/abort-error.js b/node_modules/node-fetch/src/errors/abort-error.js new file mode 100644 index 0000000..0b62f1c --- /dev/null +++ b/node_modules/node-fetch/src/errors/abort-error.js @@ -0,0 +1,10 @@ +import {FetchBaseError} from './base.js'; + +/** + * AbortError interface for cancelled requests + */ +export class AbortError extends FetchBaseError { + constructor(message, type = 'aborted') { + super(message, type); + } +} diff --git a/node_modules/node-fetch/src/errors/base.js b/node_modules/node-fetch/src/errors/base.js new file mode 100644 index 0000000..4e66e1b --- /dev/null +++ b/node_modules/node-fetch/src/errors/base.js @@ -0,0 +1,17 @@ +export class FetchBaseError extends Error { + constructor(message, type) { + super(message); + // Hide custom error implementation details from end-users + Error.captureStackTrace(this, this.constructor); + + this.type = type; + } + + get name() { + return this.constructor.name; + } + + get [Symbol.toStringTag]() { + return this.constructor.name; + } +} diff --git a/node_modules/node-fetch/src/errors/fetch-error.js b/node_modules/node-fetch/src/errors/fetch-error.js new file mode 100644 index 0000000..f7ae5cc --- /dev/null +++ b/node_modules/node-fetch/src/errors/fetch-error.js @@ -0,0 +1,26 @@ + +import {FetchBaseError} from './base.js'; + +/** + * @typedef {{ address?: string, code: string, dest?: string, errno: number, info?: object, message: string, path?: string, port?: number, syscall: string}} SystemError +*/ + +/** + * FetchError interface for operational errors + */ +export class FetchError extends FetchBaseError { + /** + * @param {string} message - Error message for human + * @param {string} [type] - Error type for machine + * @param {SystemError} [systemError] - For Node.js system error + */ + constructor(message, type, systemError) { + super(message, type); + // When err.type is `system`, err.erroredSysCall contains system error and err.code contains system error code + if (systemError) { + // eslint-disable-next-line no-multi-assign + this.code = this.errno = systemError.code; + this.erroredSysCall = systemError.syscall; + } + } +} diff --git a/node_modules/node-fetch/src/headers.js b/node_modules/node-fetch/src/headers.js new file mode 100644 index 0000000..cd69455 --- /dev/null +++ b/node_modules/node-fetch/src/headers.js @@ -0,0 +1,267 @@ +/** + * Headers.js + * + * Headers class offers convenient helpers + */ + +import {types} from 'node:util'; +import http from 'node:http'; + +/* c8 ignore next 9 */ +const validateHeaderName = typeof http.validateHeaderName === 'function' ? + http.validateHeaderName : + name => { + if (!/^[\^`\-\w!#$%&'*+.|~]+$/.test(name)) { + const error = new TypeError(`Header name must be a valid HTTP token [${name}]`); + Object.defineProperty(error, 'code', {value: 'ERR_INVALID_HTTP_TOKEN'}); + throw error; + } + }; + +/* c8 ignore next 9 */ +const validateHeaderValue = typeof http.validateHeaderValue === 'function' ? + http.validateHeaderValue : + (name, value) => { + if (/[^\t\u0020-\u007E\u0080-\u00FF]/.test(value)) { + const error = new TypeError(`Invalid character in header content ["${name}"]`); + Object.defineProperty(error, 'code', {value: 'ERR_INVALID_CHAR'}); + throw error; + } + }; + +/** + * @typedef {Headers | Record | Iterable | Iterable>} HeadersInit + */ + +/** + * This Fetch API interface allows you to perform various actions on HTTP request and response headers. + * These actions include retrieving, setting, adding to, and removing. + * A Headers object has an associated header list, which is initially empty and consists of zero or more name and value pairs. + * You can add to this using methods like append() (see Examples.) + * In all methods of this interface, header names are matched by case-insensitive byte sequence. + * + */ +export default class Headers extends URLSearchParams { + /** + * Headers class + * + * @constructor + * @param {HeadersInit} [init] - Response headers + */ + constructor(init) { + // Validate and normalize init object in [name, value(s)][] + /** @type {string[][]} */ + let result = []; + if (init instanceof Headers) { + const raw = init.raw(); + for (const [name, values] of Object.entries(raw)) { + result.push(...values.map(value => [name, value])); + } + } else if (init == null) { // eslint-disable-line no-eq-null, eqeqeq + // No op + } else if (typeof init === 'object' && !types.isBoxedPrimitive(init)) { + const method = init[Symbol.iterator]; + // eslint-disable-next-line no-eq-null, eqeqeq + if (method == null) { + // Record + result.push(...Object.entries(init)); + } else { + if (typeof method !== 'function') { + throw new TypeError('Header pairs must be iterable'); + } + + // Sequence> + // Note: per spec we have to first exhaust the lists then process them + result = [...init] + .map(pair => { + if ( + typeof pair !== 'object' || types.isBoxedPrimitive(pair) + ) { + throw new TypeError('Each header pair must be an iterable object'); + } + + return [...pair]; + }).map(pair => { + if (pair.length !== 2) { + throw new TypeError('Each header pair must be a name/value tuple'); + } + + return [...pair]; + }); + } + } else { + throw new TypeError('Failed to construct \'Headers\': The provided value is not of type \'(sequence> or record)'); + } + + // Validate and lowercase + result = + result.length > 0 ? + result.map(([name, value]) => { + validateHeaderName(name); + validateHeaderValue(name, String(value)); + return [String(name).toLowerCase(), String(value)]; + }) : + undefined; + + super(result); + + // Returning a Proxy that will lowercase key names, validate parameters and sort keys + // eslint-disable-next-line no-constructor-return + return new Proxy(this, { + get(target, p, receiver) { + switch (p) { + case 'append': + case 'set': + return (name, value) => { + validateHeaderName(name); + validateHeaderValue(name, String(value)); + return URLSearchParams.prototype[p].call( + target, + String(name).toLowerCase(), + String(value) + ); + }; + + case 'delete': + case 'has': + case 'getAll': + return name => { + validateHeaderName(name); + return URLSearchParams.prototype[p].call( + target, + String(name).toLowerCase() + ); + }; + + case 'keys': + return () => { + target.sort(); + return new Set(URLSearchParams.prototype.keys.call(target)).keys(); + }; + + default: + return Reflect.get(target, p, receiver); + } + } + }); + /* c8 ignore next */ + } + + get [Symbol.toStringTag]() { + return this.constructor.name; + } + + toString() { + return Object.prototype.toString.call(this); + } + + get(name) { + const values = this.getAll(name); + if (values.length === 0) { + return null; + } + + let value = values.join(', '); + if (/^content-encoding$/i.test(name)) { + value = value.toLowerCase(); + } + + return value; + } + + forEach(callback, thisArg = undefined) { + for (const name of this.keys()) { + Reflect.apply(callback, thisArg, [this.get(name), name, this]); + } + } + + * values() { + for (const name of this.keys()) { + yield this.get(name); + } + } + + /** + * @type {() => IterableIterator<[string, string]>} + */ + * entries() { + for (const name of this.keys()) { + yield [name, this.get(name)]; + } + } + + [Symbol.iterator]() { + return this.entries(); + } + + /** + * Node-fetch non-spec method + * returning all headers and their values as array + * @returns {Record} + */ + raw() { + return [...this.keys()].reduce((result, key) => { + result[key] = this.getAll(key); + return result; + }, {}); + } + + /** + * For better console.log(headers) and also to convert Headers into Node.js Request compatible format + */ + [Symbol.for('nodejs.util.inspect.custom')]() { + return [...this.keys()].reduce((result, key) => { + const values = this.getAll(key); + // Http.request() only supports string as Host header. + // This hack makes specifying custom Host header possible. + if (key === 'host') { + result[key] = values[0]; + } else { + result[key] = values.length > 1 ? values : values[0]; + } + + return result; + }, {}); + } +} + +/** + * Re-shaping object for Web IDL tests + * Only need to do it for overridden methods + */ +Object.defineProperties( + Headers.prototype, + ['get', 'entries', 'forEach', 'values'].reduce((result, property) => { + result[property] = {enumerable: true}; + return result; + }, {}) +); + +/** + * Create a Headers object from an http.IncomingMessage.rawHeaders, ignoring those that do + * not conform to HTTP grammar productions. + * @param {import('http').IncomingMessage['rawHeaders']} headers + */ +export function fromRawHeaders(headers = []) { + return new Headers( + headers + // Split into pairs + .reduce((result, value, index, array) => { + if (index % 2 === 0) { + result.push(array.slice(index, index + 2)); + } + + return result; + }, []) + .filter(([name, value]) => { + try { + validateHeaderName(name); + validateHeaderValue(name, String(value)); + return true; + } catch { + return false; + } + }) + + ); +} diff --git a/node_modules/node-fetch/src/index.js b/node_modules/node-fetch/src/index.js new file mode 100644 index 0000000..7c4aee8 --- /dev/null +++ b/node_modules/node-fetch/src/index.js @@ -0,0 +1,417 @@ +/** + * Index.js + * + * a request API compatible with window.fetch + * + * All spec algorithm step numbers are based on https://fetch.spec.whatwg.org/commit-snapshots/ae716822cb3a61843226cd090eefc6589446c1d2/. + */ + +import http from 'node:http'; +import https from 'node:https'; +import zlib from 'node:zlib'; +import Stream, {PassThrough, pipeline as pump} from 'node:stream'; +import {Buffer} from 'node:buffer'; + +import dataUriToBuffer from 'data-uri-to-buffer'; + +import {writeToStream, clone} from './body.js'; +import Response from './response.js'; +import Headers, {fromRawHeaders} from './headers.js'; +import Request, {getNodeRequestOptions} from './request.js'; +import {FetchError} from './errors/fetch-error.js'; +import {AbortError} from './errors/abort-error.js'; +import {isRedirect} from './utils/is-redirect.js'; +import {FormData} from 'formdata-polyfill/esm.min.js'; +import {isDomainOrSubdomain, isSameProtocol} from './utils/is.js'; +import {parseReferrerPolicyFromHeader} from './utils/referrer.js'; +import { + Blob, + File, + fileFromSync, + fileFrom, + blobFromSync, + blobFrom +} from 'fetch-blob/from.js'; + +export {FormData, Headers, Request, Response, FetchError, AbortError, isRedirect}; +export {Blob, File, fileFromSync, fileFrom, blobFromSync, blobFrom}; + +const supportedSchemas = new Set(['data:', 'http:', 'https:']); + +/** + * Fetch function + * + * @param {string | URL | import('./request').default} url - Absolute url or Request instance + * @param {*} [options_] - Fetch options + * @return {Promise} + */ +export default async function fetch(url, options_) { + return new Promise((resolve, reject) => { + // Build request object + const request = new Request(url, options_); + const {parsedURL, options} = getNodeRequestOptions(request); + if (!supportedSchemas.has(parsedURL.protocol)) { + throw new TypeError(`node-fetch cannot load ${url}. URL scheme "${parsedURL.protocol.replace(/:$/, '')}" is not supported.`); + } + + if (parsedURL.protocol === 'data:') { + const data = dataUriToBuffer(request.url); + const response = new Response(data, {headers: {'Content-Type': data.typeFull}}); + resolve(response); + return; + } + + // Wrap http.request into fetch + const send = (parsedURL.protocol === 'https:' ? https : http).request; + const {signal} = request; + let response = null; + + const abort = () => { + const error = new AbortError('The operation was aborted.'); + reject(error); + if (request.body && request.body instanceof Stream.Readable) { + request.body.destroy(error); + } + + if (!response || !response.body) { + return; + } + + response.body.emit('error', error); + }; + + if (signal && signal.aborted) { + abort(); + return; + } + + const abortAndFinalize = () => { + abort(); + finalize(); + }; + + // Send request + const request_ = send(parsedURL.toString(), options); + + if (signal) { + signal.addEventListener('abort', abortAndFinalize); + } + + const finalize = () => { + request_.abort(); + if (signal) { + signal.removeEventListener('abort', abortAndFinalize); + } + }; + + request_.on('error', error => { + reject(new FetchError(`request to ${request.url} failed, reason: ${error.message}`, 'system', error)); + finalize(); + }); + + fixResponseChunkedTransferBadEnding(request_, error => { + if (response && response.body) { + response.body.destroy(error); + } + }); + + /* c8 ignore next 18 */ + if (process.version < 'v14') { + // Before Node.js 14, pipeline() does not fully support async iterators and does not always + // properly handle when the socket close/end events are out of order. + request_.on('socket', s => { + let endedWithEventsCount; + s.prependListener('end', () => { + endedWithEventsCount = s._eventsCount; + }); + s.prependListener('close', hadError => { + // if end happened before close but the socket didn't emit an error, do it now + if (response && endedWithEventsCount < s._eventsCount && !hadError) { + const error = new Error('Premature close'); + error.code = 'ERR_STREAM_PREMATURE_CLOSE'; + response.body.emit('error', error); + } + }); + }); + } + + request_.on('response', response_ => { + request_.setTimeout(0); + const headers = fromRawHeaders(response_.rawHeaders); + + // HTTP fetch step 5 + if (isRedirect(response_.statusCode)) { + // HTTP fetch step 5.2 + const location = headers.get('Location'); + + // HTTP fetch step 5.3 + let locationURL = null; + try { + locationURL = location === null ? null : new URL(location, request.url); + } catch { + // error here can only be invalid URL in Location: header + // do not throw when options.redirect == manual + // let the user extract the errorneous redirect URL + if (request.redirect !== 'manual') { + reject(new FetchError(`uri requested responds with an invalid redirect URL: ${location}`, 'invalid-redirect')); + finalize(); + return; + } + } + + // HTTP fetch step 5.5 + switch (request.redirect) { + case 'error': + reject(new FetchError(`uri requested responds with a redirect, redirect mode is set to error: ${request.url}`, 'no-redirect')); + finalize(); + return; + case 'manual': + // Nothing to do + break; + case 'follow': { + // HTTP-redirect fetch step 2 + if (locationURL === null) { + break; + } + + // HTTP-redirect fetch step 5 + if (request.counter >= request.follow) { + reject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect')); + finalize(); + return; + } + + // HTTP-redirect fetch step 6 (counter increment) + // Create a new Request object. + const requestOptions = { + headers: new Headers(request.headers), + follow: request.follow, + counter: request.counter + 1, + agent: request.agent, + compress: request.compress, + method: request.method, + body: clone(request), + signal: request.signal, + size: request.size, + referrer: request.referrer, + referrerPolicy: request.referrerPolicy + }; + + // when forwarding sensitive headers like "Authorization", + // "WWW-Authenticate", and "Cookie" to untrusted targets, + // headers will be ignored when following a redirect to a domain + // that is not a subdomain match or exact match of the initial domain. + // For example, a redirect from "foo.com" to either "foo.com" or "sub.foo.com" + // will forward the sensitive headers, but a redirect to "bar.com" will not. + // headers will also be ignored when following a redirect to a domain using + // a different protocol. For example, a redirect from "https://foo.com" to "http://foo.com" + // will not forward the sensitive headers + if (!isDomainOrSubdomain(request.url, locationURL) || !isSameProtocol(request.url, locationURL)) { + for (const name of ['authorization', 'www-authenticate', 'cookie', 'cookie2']) { + requestOptions.headers.delete(name); + } + } + + // HTTP-redirect fetch step 9 + if (response_.statusCode !== 303 && request.body && options_.body instanceof Stream.Readable) { + reject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect')); + finalize(); + return; + } + + // HTTP-redirect fetch step 11 + if (response_.statusCode === 303 || ((response_.statusCode === 301 || response_.statusCode === 302) && request.method === 'POST')) { + requestOptions.method = 'GET'; + requestOptions.body = undefined; + requestOptions.headers.delete('content-length'); + } + + // HTTP-redirect fetch step 14 + const responseReferrerPolicy = parseReferrerPolicyFromHeader(headers); + if (responseReferrerPolicy) { + requestOptions.referrerPolicy = responseReferrerPolicy; + } + + // HTTP-redirect fetch step 15 + resolve(fetch(new Request(locationURL, requestOptions))); + finalize(); + return; + } + + default: + return reject(new TypeError(`Redirect option '${request.redirect}' is not a valid value of RequestRedirect`)); + } + } + + // Prepare response + if (signal) { + response_.once('end', () => { + signal.removeEventListener('abort', abortAndFinalize); + }); + } + + let body = pump(response_, new PassThrough(), error => { + if (error) { + reject(error); + } + }); + // see https://github.com/nodejs/node/pull/29376 + /* c8 ignore next 3 */ + if (process.version < 'v12.10') { + response_.on('aborted', abortAndFinalize); + } + + const responseOptions = { + url: request.url, + status: response_.statusCode, + statusText: response_.statusMessage, + headers, + size: request.size, + counter: request.counter, + highWaterMark: request.highWaterMark + }; + + // HTTP-network fetch step 12.1.1.3 + const codings = headers.get('Content-Encoding'); + + // HTTP-network fetch step 12.1.1.4: handle content codings + + // in following scenarios we ignore compression support + // 1. compression support is disabled + // 2. HEAD request + // 3. no Content-Encoding header + // 4. no content response (204) + // 5. content not modified response (304) + if (!request.compress || request.method === 'HEAD' || codings === null || response_.statusCode === 204 || response_.statusCode === 304) { + response = new Response(body, responseOptions); + resolve(response); + return; + } + + // For Node v6+ + // Be less strict when decoding compressed responses, since sometimes + // servers send slightly invalid responses that are still accepted + // by common browsers. + // Always using Z_SYNC_FLUSH is what cURL does. + const zlibOptions = { + flush: zlib.Z_SYNC_FLUSH, + finishFlush: zlib.Z_SYNC_FLUSH + }; + + // For gzip + if (codings === 'gzip' || codings === 'x-gzip') { + body = pump(body, zlib.createGunzip(zlibOptions), error => { + if (error) { + reject(error); + } + }); + response = new Response(body, responseOptions); + resolve(response); + return; + } + + // For deflate + if (codings === 'deflate' || codings === 'x-deflate') { + // Handle the infamous raw deflate response from old servers + // a hack for old IIS and Apache servers + const raw = pump(response_, new PassThrough(), error => { + if (error) { + reject(error); + } + }); + raw.once('data', chunk => { + // See http://stackoverflow.com/questions/37519828 + if ((chunk[0] & 0x0F) === 0x08) { + body = pump(body, zlib.createInflate(), error => { + if (error) { + reject(error); + } + }); + } else { + body = pump(body, zlib.createInflateRaw(), error => { + if (error) { + reject(error); + } + }); + } + + response = new Response(body, responseOptions); + resolve(response); + }); + raw.once('end', () => { + // Some old IIS servers return zero-length OK deflate responses, so + // 'data' is never emitted. See https://github.com/node-fetch/node-fetch/pull/903 + if (!response) { + response = new Response(body, responseOptions); + resolve(response); + } + }); + return; + } + + // For br + if (codings === 'br') { + body = pump(body, zlib.createBrotliDecompress(), error => { + if (error) { + reject(error); + } + }); + response = new Response(body, responseOptions); + resolve(response); + return; + } + + // Otherwise, use response as-is + response = new Response(body, responseOptions); + resolve(response); + }); + + // eslint-disable-next-line promise/prefer-await-to-then + writeToStream(request_, request).catch(reject); + }); +} + +function fixResponseChunkedTransferBadEnding(request, errorCallback) { + const LAST_CHUNK = Buffer.from('0\r\n\r\n'); + + let isChunkedTransfer = false; + let properLastChunkReceived = false; + let previousChunk; + + request.on('response', response => { + const {headers} = response; + isChunkedTransfer = headers['transfer-encoding'] === 'chunked' && !headers['content-length']; + }); + + request.on('socket', socket => { + const onSocketClose = () => { + if (isChunkedTransfer && !properLastChunkReceived) { + const error = new Error('Premature close'); + error.code = 'ERR_STREAM_PREMATURE_CLOSE'; + errorCallback(error); + } + }; + + const onData = buf => { + properLastChunkReceived = Buffer.compare(buf.slice(-5), LAST_CHUNK) === 0; + + // Sometimes final 0-length chunk and end of message code are in separate packets + if (!properLastChunkReceived && previousChunk) { + properLastChunkReceived = ( + Buffer.compare(previousChunk.slice(-3), LAST_CHUNK.slice(0, 3)) === 0 && + Buffer.compare(buf.slice(-2), LAST_CHUNK.slice(3)) === 0 + ); + } + + previousChunk = buf; + }; + + socket.prependListener('close', onSocketClose); + socket.on('data', onData); + + request.on('close', () => { + socket.removeListener('close', onSocketClose); + socket.removeListener('data', onData); + }); + }); +} diff --git a/node_modules/node-fetch/src/request.js b/node_modules/node-fetch/src/request.js new file mode 100644 index 0000000..af2ebc8 --- /dev/null +++ b/node_modules/node-fetch/src/request.js @@ -0,0 +1,313 @@ +/** + * Request.js + * + * Request class contains server only options + * + * All spec algorithm step numbers are based on https://fetch.spec.whatwg.org/commit-snapshots/ae716822cb3a61843226cd090eefc6589446c1d2/. + */ + +import {format as formatUrl} from 'node:url'; +import {deprecate} from 'node:util'; +import Headers from './headers.js'; +import Body, {clone, extractContentType, getTotalBytes} from './body.js'; +import {isAbortSignal} from './utils/is.js'; +import {getSearch} from './utils/get-search.js'; +import { + validateReferrerPolicy, determineRequestsReferrer, DEFAULT_REFERRER_POLICY +} from './utils/referrer.js'; + +const INTERNALS = Symbol('Request internals'); + +/** + * Check if `obj` is an instance of Request. + * + * @param {*} object + * @return {boolean} + */ +const isRequest = object => { + return ( + typeof object === 'object' && + typeof object[INTERNALS] === 'object' + ); +}; + +const doBadDataWarn = deprecate(() => {}, + '.data is not a valid RequestInit property, use .body instead', + 'https://github.com/node-fetch/node-fetch/issues/1000 (request)'); + +/** + * Request class + * + * Ref: https://fetch.spec.whatwg.org/#request-class + * + * @param Mixed input Url or Request instance + * @param Object init Custom options + * @return Void + */ +export default class Request extends Body { + constructor(input, init = {}) { + let parsedURL; + + // Normalize input and force URL to be encoded as UTF-8 (https://github.com/node-fetch/node-fetch/issues/245) + if (isRequest(input)) { + parsedURL = new URL(input.url); + } else { + parsedURL = new URL(input); + input = {}; + } + + if (parsedURL.username !== '' || parsedURL.password !== '') { + throw new TypeError(`${parsedURL} is an url with embedded credentials.`); + } + + let method = init.method || input.method || 'GET'; + if (/^(delete|get|head|options|post|put)$/i.test(method)) { + method = method.toUpperCase(); + } + + if (!isRequest(init) && 'data' in init) { + doBadDataWarn(); + } + + // eslint-disable-next-line no-eq-null, eqeqeq + if ((init.body != null || (isRequest(input) && input.body !== null)) && + (method === 'GET' || method === 'HEAD')) { + throw new TypeError('Request with GET/HEAD method cannot have body'); + } + + const inputBody = init.body ? + init.body : + (isRequest(input) && input.body !== null ? + clone(input) : + null); + + super(inputBody, { + size: init.size || input.size || 0 + }); + + const headers = new Headers(init.headers || input.headers || {}); + + if (inputBody !== null && !headers.has('Content-Type')) { + const contentType = extractContentType(inputBody, this); + if (contentType) { + headers.set('Content-Type', contentType); + } + } + + let signal = isRequest(input) ? + input.signal : + null; + if ('signal' in init) { + signal = init.signal; + } + + // eslint-disable-next-line no-eq-null, eqeqeq + if (signal != null && !isAbortSignal(signal)) { + throw new TypeError('Expected signal to be an instanceof AbortSignal or EventTarget'); + } + + // §5.4, Request constructor steps, step 15.1 + // eslint-disable-next-line no-eq-null, eqeqeq + let referrer = init.referrer == null ? input.referrer : init.referrer; + if (referrer === '') { + // §5.4, Request constructor steps, step 15.2 + referrer = 'no-referrer'; + } else if (referrer) { + // §5.4, Request constructor steps, step 15.3.1, 15.3.2 + const parsedReferrer = new URL(referrer); + // §5.4, Request constructor steps, step 15.3.3, 15.3.4 + referrer = /^about:(\/\/)?client$/.test(parsedReferrer) ? 'client' : parsedReferrer; + } else { + referrer = undefined; + } + + this[INTERNALS] = { + method, + redirect: init.redirect || input.redirect || 'follow', + headers, + parsedURL, + signal, + referrer + }; + + // Node-fetch-only options + this.follow = init.follow === undefined ? (input.follow === undefined ? 20 : input.follow) : init.follow; + this.compress = init.compress === undefined ? (input.compress === undefined ? true : input.compress) : init.compress; + this.counter = init.counter || input.counter || 0; + this.agent = init.agent || input.agent; + this.highWaterMark = init.highWaterMark || input.highWaterMark || 16384; + this.insecureHTTPParser = init.insecureHTTPParser || input.insecureHTTPParser || false; + + // §5.4, Request constructor steps, step 16. + // Default is empty string per https://fetch.spec.whatwg.org/#concept-request-referrer-policy + this.referrerPolicy = init.referrerPolicy || input.referrerPolicy || ''; + } + + /** @returns {string} */ + get method() { + return this[INTERNALS].method; + } + + /** @returns {string} */ + get url() { + return formatUrl(this[INTERNALS].parsedURL); + } + + /** @returns {Headers} */ + get headers() { + return this[INTERNALS].headers; + } + + get redirect() { + return this[INTERNALS].redirect; + } + + /** @returns {AbortSignal} */ + get signal() { + return this[INTERNALS].signal; + } + + // https://fetch.spec.whatwg.org/#dom-request-referrer + get referrer() { + if (this[INTERNALS].referrer === 'no-referrer') { + return ''; + } + + if (this[INTERNALS].referrer === 'client') { + return 'about:client'; + } + + if (this[INTERNALS].referrer) { + return this[INTERNALS].referrer.toString(); + } + + return undefined; + } + + get referrerPolicy() { + return this[INTERNALS].referrerPolicy; + } + + set referrerPolicy(referrerPolicy) { + this[INTERNALS].referrerPolicy = validateReferrerPolicy(referrerPolicy); + } + + /** + * Clone this request + * + * @return Request + */ + clone() { + return new Request(this); + } + + get [Symbol.toStringTag]() { + return 'Request'; + } +} + +Object.defineProperties(Request.prototype, { + method: {enumerable: true}, + url: {enumerable: true}, + headers: {enumerable: true}, + redirect: {enumerable: true}, + clone: {enumerable: true}, + signal: {enumerable: true}, + referrer: {enumerable: true}, + referrerPolicy: {enumerable: true} +}); + +/** + * Convert a Request to Node.js http request options. + * + * @param {Request} request - A Request instance + * @return The options object to be passed to http.request + */ +export const getNodeRequestOptions = request => { + const {parsedURL} = request[INTERNALS]; + const headers = new Headers(request[INTERNALS].headers); + + // Fetch step 1.3 + if (!headers.has('Accept')) { + headers.set('Accept', '*/*'); + } + + // HTTP-network-or-cache fetch steps 2.4-2.7 + let contentLengthValue = null; + if (request.body === null && /^(post|put)$/i.test(request.method)) { + contentLengthValue = '0'; + } + + if (request.body !== null) { + const totalBytes = getTotalBytes(request); + // Set Content-Length if totalBytes is a number (that is not NaN) + if (typeof totalBytes === 'number' && !Number.isNaN(totalBytes)) { + contentLengthValue = String(totalBytes); + } + } + + if (contentLengthValue) { + headers.set('Content-Length', contentLengthValue); + } + + // 4.1. Main fetch, step 2.6 + // > If request's referrer policy is the empty string, then set request's referrer policy to the + // > default referrer policy. + if (request.referrerPolicy === '') { + request.referrerPolicy = DEFAULT_REFERRER_POLICY; + } + + // 4.1. Main fetch, step 2.7 + // > If request's referrer is not "no-referrer", set request's referrer to the result of invoking + // > determine request's referrer. + if (request.referrer && request.referrer !== 'no-referrer') { + request[INTERNALS].referrer = determineRequestsReferrer(request); + } else { + request[INTERNALS].referrer = 'no-referrer'; + } + + // 4.5. HTTP-network-or-cache fetch, step 6.9 + // > If httpRequest's referrer is a URL, then append `Referer`/httpRequest's referrer, serialized + // > and isomorphic encoded, to httpRequest's header list. + if (request[INTERNALS].referrer instanceof URL) { + headers.set('Referer', request.referrer); + } + + // HTTP-network-or-cache fetch step 2.11 + if (!headers.has('User-Agent')) { + headers.set('User-Agent', 'node-fetch'); + } + + // HTTP-network-or-cache fetch step 2.15 + if (request.compress && !headers.has('Accept-Encoding')) { + headers.set('Accept-Encoding', 'gzip, deflate, br'); + } + + let {agent} = request; + if (typeof agent === 'function') { + agent = agent(parsedURL); + } + + // HTTP-network fetch step 4.2 + // chunked encoding is handled by Node.js + + const search = getSearch(parsedURL); + + // Pass the full URL directly to request(), but overwrite the following + // options: + const options = { + // Overwrite search to retain trailing ? (issue #776) + path: parsedURL.pathname + search, + // The following options are not expressed in the URL + method: request.method, + headers: headers[Symbol.for('nodejs.util.inspect.custom')](), + insecureHTTPParser: request.insecureHTTPParser, + agent + }; + + return { + /** @type {URL} */ + parsedURL, + options + }; +}; diff --git a/node_modules/node-fetch/src/response.js b/node_modules/node-fetch/src/response.js new file mode 100644 index 0000000..9806c0c --- /dev/null +++ b/node_modules/node-fetch/src/response.js @@ -0,0 +1,160 @@ +/** + * Response.js + * + * Response class provides content decoding + */ + +import Headers from './headers.js'; +import Body, {clone, extractContentType} from './body.js'; +import {isRedirect} from './utils/is-redirect.js'; + +const INTERNALS = Symbol('Response internals'); + +/** + * Response class + * + * Ref: https://fetch.spec.whatwg.org/#response-class + * + * @param Stream body Readable stream + * @param Object opts Response options + * @return Void + */ +export default class Response extends Body { + constructor(body = null, options = {}) { + super(body, options); + + // eslint-disable-next-line no-eq-null, eqeqeq, no-negated-condition + const status = options.status != null ? options.status : 200; + + const headers = new Headers(options.headers); + + if (body !== null && !headers.has('Content-Type')) { + const contentType = extractContentType(body, this); + if (contentType) { + headers.append('Content-Type', contentType); + } + } + + this[INTERNALS] = { + type: 'default', + url: options.url, + status, + statusText: options.statusText || '', + headers, + counter: options.counter, + highWaterMark: options.highWaterMark + }; + } + + get type() { + return this[INTERNALS].type; + } + + get url() { + return this[INTERNALS].url || ''; + } + + get status() { + return this[INTERNALS].status; + } + + /** + * Convenience property representing if the request ended normally + */ + get ok() { + return this[INTERNALS].status >= 200 && this[INTERNALS].status < 300; + } + + get redirected() { + return this[INTERNALS].counter > 0; + } + + get statusText() { + return this[INTERNALS].statusText; + } + + get headers() { + return this[INTERNALS].headers; + } + + get highWaterMark() { + return this[INTERNALS].highWaterMark; + } + + /** + * Clone this response + * + * @return Response + */ + clone() { + return new Response(clone(this, this.highWaterMark), { + type: this.type, + url: this.url, + status: this.status, + statusText: this.statusText, + headers: this.headers, + ok: this.ok, + redirected: this.redirected, + size: this.size, + highWaterMark: this.highWaterMark + }); + } + + /** + * @param {string} url The URL that the new response is to originate from. + * @param {number} status An optional status code for the response (e.g., 302.) + * @returns {Response} A Response object. + */ + static redirect(url, status = 302) { + if (!isRedirect(status)) { + throw new RangeError('Failed to execute "redirect" on "response": Invalid status code'); + } + + return new Response(null, { + headers: { + location: new URL(url).toString() + }, + status + }); + } + + static error() { + const response = new Response(null, {status: 0, statusText: ''}); + response[INTERNALS].type = 'error'; + return response; + } + + static json(data = undefined, init = {}) { + const body = JSON.stringify(data); + + if (body === undefined) { + throw new TypeError('data is not JSON serializable'); + } + + const headers = new Headers(init && init.headers); + + if (!headers.has('content-type')) { + headers.set('content-type', 'application/json'); + } + + return new Response(body, { + ...init, + headers + }); + } + + get [Symbol.toStringTag]() { + return 'Response'; + } +} + +Object.defineProperties(Response.prototype, { + type: {enumerable: true}, + url: {enumerable: true}, + status: {enumerable: true}, + ok: {enumerable: true}, + redirected: {enumerable: true}, + statusText: {enumerable: true}, + headers: {enumerable: true}, + clone: {enumerable: true} +}); diff --git a/node_modules/node-fetch/src/utils/get-search.js b/node_modules/node-fetch/src/utils/get-search.js new file mode 100644 index 0000000..d067e7c --- /dev/null +++ b/node_modules/node-fetch/src/utils/get-search.js @@ -0,0 +1,9 @@ +export const getSearch = parsedURL => { + if (parsedURL.search) { + return parsedURL.search; + } + + const lastOffset = parsedURL.href.length - 1; + const hash = parsedURL.hash || (parsedURL.href[lastOffset] === '#' ? '#' : ''); + return parsedURL.href[lastOffset - hash.length] === '?' ? '?' : ''; +}; diff --git a/node_modules/node-fetch/src/utils/is-redirect.js b/node_modules/node-fetch/src/utils/is-redirect.js new file mode 100644 index 0000000..d1347f0 --- /dev/null +++ b/node_modules/node-fetch/src/utils/is-redirect.js @@ -0,0 +1,11 @@ +const redirectStatus = new Set([301, 302, 303, 307, 308]); + +/** + * Redirect code matching + * + * @param {number} code - Status code + * @return {boolean} + */ +export const isRedirect = code => { + return redirectStatus.has(code); +}; diff --git a/node_modules/node-fetch/src/utils/is.js b/node_modules/node-fetch/src/utils/is.js new file mode 100644 index 0000000..f9e467e --- /dev/null +++ b/node_modules/node-fetch/src/utils/is.js @@ -0,0 +1,87 @@ +/** + * Is.js + * + * Object type checks. + */ + +const NAME = Symbol.toStringTag; + +/** + * Check if `obj` is a URLSearchParams object + * ref: https://github.com/node-fetch/node-fetch/issues/296#issuecomment-307598143 + * @param {*} object - Object to check for + * @return {boolean} + */ +export const isURLSearchParameters = object => { + return ( + typeof object === 'object' && + typeof object.append === 'function' && + typeof object.delete === 'function' && + typeof object.get === 'function' && + typeof object.getAll === 'function' && + typeof object.has === 'function' && + typeof object.set === 'function' && + typeof object.sort === 'function' && + object[NAME] === 'URLSearchParams' + ); +}; + +/** + * Check if `object` is a W3C `Blob` object (which `File` inherits from) + * @param {*} object - Object to check for + * @return {boolean} + */ +export const isBlob = object => { + return ( + object && + typeof object === 'object' && + typeof object.arrayBuffer === 'function' && + typeof object.type === 'string' && + typeof object.stream === 'function' && + typeof object.constructor === 'function' && + /^(Blob|File)$/.test(object[NAME]) + ); +}; + +/** + * Check if `obj` is an instance of AbortSignal. + * @param {*} object - Object to check for + * @return {boolean} + */ +export const isAbortSignal = object => { + return ( + typeof object === 'object' && ( + object[NAME] === 'AbortSignal' || + object[NAME] === 'EventTarget' + ) + ); +}; + +/** + * isDomainOrSubdomain reports whether sub is a subdomain (or exact match) of + * the parent domain. + * + * Both domains must already be in canonical form. + * @param {string|URL} original + * @param {string|URL} destination + */ +export const isDomainOrSubdomain = (destination, original) => { + const orig = new URL(original).hostname; + const dest = new URL(destination).hostname; + + return orig === dest || orig.endsWith(`.${dest}`); +}; + +/** + * isSameProtocol reports whether the two provided URLs use the same protocol. + * + * Both domains must already be in canonical form. + * @param {string|URL} original + * @param {string|URL} destination + */ +export const isSameProtocol = (destination, original) => { + const orig = new URL(original).protocol; + const dest = new URL(destination).protocol; + + return orig === dest; +}; diff --git a/node_modules/node-fetch/src/utils/multipart-parser.js b/node_modules/node-fetch/src/utils/multipart-parser.js new file mode 100644 index 0000000..5ad06f9 --- /dev/null +++ b/node_modules/node-fetch/src/utils/multipart-parser.js @@ -0,0 +1,432 @@ +import {File} from 'fetch-blob/from.js'; +import {FormData} from 'formdata-polyfill/esm.min.js'; + +let s = 0; +const S = { + START_BOUNDARY: s++, + HEADER_FIELD_START: s++, + HEADER_FIELD: s++, + HEADER_VALUE_START: s++, + HEADER_VALUE: s++, + HEADER_VALUE_ALMOST_DONE: s++, + HEADERS_ALMOST_DONE: s++, + PART_DATA_START: s++, + PART_DATA: s++, + END: s++ +}; + +let f = 1; +const F = { + PART_BOUNDARY: f, + LAST_BOUNDARY: f *= 2 +}; + +const LF = 10; +const CR = 13; +const SPACE = 32; +const HYPHEN = 45; +const COLON = 58; +const A = 97; +const Z = 122; + +const lower = c => c | 0x20; + +const noop = () => {}; + +class MultipartParser { + /** + * @param {string} boundary + */ + constructor(boundary) { + this.index = 0; + this.flags = 0; + + this.onHeaderEnd = noop; + this.onHeaderField = noop; + this.onHeadersEnd = noop; + this.onHeaderValue = noop; + this.onPartBegin = noop; + this.onPartData = noop; + this.onPartEnd = noop; + + this.boundaryChars = {}; + + boundary = '\r\n--' + boundary; + const ui8a = new Uint8Array(boundary.length); + for (let i = 0; i < boundary.length; i++) { + ui8a[i] = boundary.charCodeAt(i); + this.boundaryChars[ui8a[i]] = true; + } + + this.boundary = ui8a; + this.lookbehind = new Uint8Array(this.boundary.length + 8); + this.state = S.START_BOUNDARY; + } + + /** + * @param {Uint8Array} data + */ + write(data) { + let i = 0; + const length_ = data.length; + let previousIndex = this.index; + let {lookbehind, boundary, boundaryChars, index, state, flags} = this; + const boundaryLength = this.boundary.length; + const boundaryEnd = boundaryLength - 1; + const bufferLength = data.length; + let c; + let cl; + + const mark = name => { + this[name + 'Mark'] = i; + }; + + const clear = name => { + delete this[name + 'Mark']; + }; + + const callback = (callbackSymbol, start, end, ui8a) => { + if (start === undefined || start !== end) { + this[callbackSymbol](ui8a && ui8a.subarray(start, end)); + } + }; + + const dataCallback = (name, clear) => { + const markSymbol = name + 'Mark'; + if (!(markSymbol in this)) { + return; + } + + if (clear) { + callback(name, this[markSymbol], i, data); + delete this[markSymbol]; + } else { + callback(name, this[markSymbol], data.length, data); + this[markSymbol] = 0; + } + }; + + for (i = 0; i < length_; i++) { + c = data[i]; + + switch (state) { + case S.START_BOUNDARY: + if (index === boundary.length - 2) { + if (c === HYPHEN) { + flags |= F.LAST_BOUNDARY; + } else if (c !== CR) { + return; + } + + index++; + break; + } else if (index - 1 === boundary.length - 2) { + if (flags & F.LAST_BOUNDARY && c === HYPHEN) { + state = S.END; + flags = 0; + } else if (!(flags & F.LAST_BOUNDARY) && c === LF) { + index = 0; + callback('onPartBegin'); + state = S.HEADER_FIELD_START; + } else { + return; + } + + break; + } + + if (c !== boundary[index + 2]) { + index = -2; + } + + if (c === boundary[index + 2]) { + index++; + } + + break; + case S.HEADER_FIELD_START: + state = S.HEADER_FIELD; + mark('onHeaderField'); + index = 0; + // falls through + case S.HEADER_FIELD: + if (c === CR) { + clear('onHeaderField'); + state = S.HEADERS_ALMOST_DONE; + break; + } + + index++; + if (c === HYPHEN) { + break; + } + + if (c === COLON) { + if (index === 1) { + // empty header field + return; + } + + dataCallback('onHeaderField', true); + state = S.HEADER_VALUE_START; + break; + } + + cl = lower(c); + if (cl < A || cl > Z) { + return; + } + + break; + case S.HEADER_VALUE_START: + if (c === SPACE) { + break; + } + + mark('onHeaderValue'); + state = S.HEADER_VALUE; + // falls through + case S.HEADER_VALUE: + if (c === CR) { + dataCallback('onHeaderValue', true); + callback('onHeaderEnd'); + state = S.HEADER_VALUE_ALMOST_DONE; + } + + break; + case S.HEADER_VALUE_ALMOST_DONE: + if (c !== LF) { + return; + } + + state = S.HEADER_FIELD_START; + break; + case S.HEADERS_ALMOST_DONE: + if (c !== LF) { + return; + } + + callback('onHeadersEnd'); + state = S.PART_DATA_START; + break; + case S.PART_DATA_START: + state = S.PART_DATA; + mark('onPartData'); + // falls through + case S.PART_DATA: + previousIndex = index; + + if (index === 0) { + // boyer-moore derrived algorithm to safely skip non-boundary data + i += boundaryEnd; + while (i < bufferLength && !(data[i] in boundaryChars)) { + i += boundaryLength; + } + + i -= boundaryEnd; + c = data[i]; + } + + if (index < boundary.length) { + if (boundary[index] === c) { + if (index === 0) { + dataCallback('onPartData', true); + } + + index++; + } else { + index = 0; + } + } else if (index === boundary.length) { + index++; + if (c === CR) { + // CR = part boundary + flags |= F.PART_BOUNDARY; + } else if (c === HYPHEN) { + // HYPHEN = end boundary + flags |= F.LAST_BOUNDARY; + } else { + index = 0; + } + } else if (index - 1 === boundary.length) { + if (flags & F.PART_BOUNDARY) { + index = 0; + if (c === LF) { + // unset the PART_BOUNDARY flag + flags &= ~F.PART_BOUNDARY; + callback('onPartEnd'); + callback('onPartBegin'); + state = S.HEADER_FIELD_START; + break; + } + } else if (flags & F.LAST_BOUNDARY) { + if (c === HYPHEN) { + callback('onPartEnd'); + state = S.END; + flags = 0; + } else { + index = 0; + } + } else { + index = 0; + } + } + + if (index > 0) { + // when matching a possible boundary, keep a lookbehind reference + // in case it turns out to be a false lead + lookbehind[index - 1] = c; + } else if (previousIndex > 0) { + // if our boundary turned out to be rubbish, the captured lookbehind + // belongs to partData + const _lookbehind = new Uint8Array(lookbehind.buffer, lookbehind.byteOffset, lookbehind.byteLength); + callback('onPartData', 0, previousIndex, _lookbehind); + previousIndex = 0; + mark('onPartData'); + + // reconsider the current character even so it interrupted the sequence + // it could be the beginning of a new sequence + i--; + } + + break; + case S.END: + break; + default: + throw new Error(`Unexpected state entered: ${state}`); + } + } + + dataCallback('onHeaderField'); + dataCallback('onHeaderValue'); + dataCallback('onPartData'); + + // Update properties for the next call + this.index = index; + this.state = state; + this.flags = flags; + } + + end() { + if ((this.state === S.HEADER_FIELD_START && this.index === 0) || + (this.state === S.PART_DATA && this.index === this.boundary.length)) { + this.onPartEnd(); + } else if (this.state !== S.END) { + throw new Error('MultipartParser.end(): stream ended unexpectedly'); + } + } +} + +function _fileName(headerValue) { + // matches either a quoted-string or a token (RFC 2616 section 19.5.1) + const m = headerValue.match(/\bfilename=("(.*?)"|([^()<>@,;:\\"/[\]?={}\s\t]+))($|;\s)/i); + if (!m) { + return; + } + + const match = m[2] || m[3] || ''; + let filename = match.slice(match.lastIndexOf('\\') + 1); + filename = filename.replace(/%22/g, '"'); + filename = filename.replace(/&#(\d{4});/g, (m, code) => { + return String.fromCharCode(code); + }); + return filename; +} + +export async function toFormData(Body, ct) { + if (!/multipart/i.test(ct)) { + throw new TypeError('Failed to fetch'); + } + + const m = ct.match(/boundary=(?:"([^"]+)"|([^;]+))/i); + + if (!m) { + throw new TypeError('no or bad content-type header, no multipart boundary'); + } + + const parser = new MultipartParser(m[1] || m[2]); + + let headerField; + let headerValue; + let entryValue; + let entryName; + let contentType; + let filename; + const entryChunks = []; + const formData = new FormData(); + + const onPartData = ui8a => { + entryValue += decoder.decode(ui8a, {stream: true}); + }; + + const appendToFile = ui8a => { + entryChunks.push(ui8a); + }; + + const appendFileToFormData = () => { + const file = new File(entryChunks, filename, {type: contentType}); + formData.append(entryName, file); + }; + + const appendEntryToFormData = () => { + formData.append(entryName, entryValue); + }; + + const decoder = new TextDecoder('utf-8'); + decoder.decode(); + + parser.onPartBegin = function () { + parser.onPartData = onPartData; + parser.onPartEnd = appendEntryToFormData; + + headerField = ''; + headerValue = ''; + entryValue = ''; + entryName = ''; + contentType = ''; + filename = null; + entryChunks.length = 0; + }; + + parser.onHeaderField = function (ui8a) { + headerField += decoder.decode(ui8a, {stream: true}); + }; + + parser.onHeaderValue = function (ui8a) { + headerValue += decoder.decode(ui8a, {stream: true}); + }; + + parser.onHeaderEnd = function () { + headerValue += decoder.decode(); + headerField = headerField.toLowerCase(); + + if (headerField === 'content-disposition') { + // matches either a quoted-string or a token (RFC 2616 section 19.5.1) + const m = headerValue.match(/\bname=("([^"]*)"|([^()<>@,;:\\"/[\]?={}\s\t]+))/i); + + if (m) { + entryName = m[2] || m[3] || ''; + } + + filename = _fileName(headerValue); + + if (filename) { + parser.onPartData = appendToFile; + parser.onPartEnd = appendFileToFormData; + } + } else if (headerField === 'content-type') { + contentType = headerValue; + } + + headerValue = ''; + headerField = ''; + }; + + for await (const chunk of Body) { + parser.write(chunk); + } + + parser.end(); + + return formData; +} diff --git a/node_modules/node-fetch/src/utils/referrer.js b/node_modules/node-fetch/src/utils/referrer.js new file mode 100644 index 0000000..6741f2f --- /dev/null +++ b/node_modules/node-fetch/src/utils/referrer.js @@ -0,0 +1,340 @@ +import {isIP} from 'node:net'; + +/** + * @external URL + * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/URL|URL} + */ + +/** + * @module utils/referrer + * @private + */ + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#strip-url|Referrer Policy §8.4. Strip url for use as a referrer} + * @param {string} URL + * @param {boolean} [originOnly=false] + */ +export function stripURLForUseAsAReferrer(url, originOnly = false) { + // 1. If url is null, return no referrer. + if (url == null) { // eslint-disable-line no-eq-null, eqeqeq + return 'no-referrer'; + } + + url = new URL(url); + + // 2. If url's scheme is a local scheme, then return no referrer. + if (/^(about|blob|data):$/.test(url.protocol)) { + return 'no-referrer'; + } + + // 3. Set url's username to the empty string. + url.username = ''; + + // 4. Set url's password to null. + // Note: `null` appears to be a mistake as this actually results in the password being `"null"`. + url.password = ''; + + // 5. Set url's fragment to null. + // Note: `null` appears to be a mistake as this actually results in the fragment being `"#null"`. + url.hash = ''; + + // 6. If the origin-only flag is true, then: + if (originOnly) { + // 6.1. Set url's path to null. + // Note: `null` appears to be a mistake as this actually results in the path being `"/null"`. + url.pathname = ''; + + // 6.2. Set url's query to null. + // Note: `null` appears to be a mistake as this actually results in the query being `"?null"`. + url.search = ''; + } + + // 7. Return url. + return url; +} + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#enumdef-referrerpolicy|enum ReferrerPolicy} + */ +export const ReferrerPolicy = new Set([ + '', + 'no-referrer', + 'no-referrer-when-downgrade', + 'same-origin', + 'origin', + 'strict-origin', + 'origin-when-cross-origin', + 'strict-origin-when-cross-origin', + 'unsafe-url' +]); + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#default-referrer-policy|default referrer policy} + */ +export const DEFAULT_REFERRER_POLICY = 'strict-origin-when-cross-origin'; + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#referrer-policies|Referrer Policy §3. Referrer Policies} + * @param {string} referrerPolicy + * @returns {string} referrerPolicy + */ +export function validateReferrerPolicy(referrerPolicy) { + if (!ReferrerPolicy.has(referrerPolicy)) { + throw new TypeError(`Invalid referrerPolicy: ${referrerPolicy}`); + } + + return referrerPolicy; +} + +/** + * @see {@link https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy|Referrer Policy §3.2. Is origin potentially trustworthy?} + * @param {external:URL} url + * @returns `true`: "Potentially Trustworthy", `false`: "Not Trustworthy" + */ +export function isOriginPotentiallyTrustworthy(url) { + // 1. If origin is an opaque origin, return "Not Trustworthy". + // Not applicable + + // 2. Assert: origin is a tuple origin. + // Not for implementations + + // 3. If origin's scheme is either "https" or "wss", return "Potentially Trustworthy". + if (/^(http|ws)s:$/.test(url.protocol)) { + return true; + } + + // 4. If origin's host component matches one of the CIDR notations 127.0.0.0/8 or ::1/128 [RFC4632], return "Potentially Trustworthy". + const hostIp = url.host.replace(/(^\[)|(]$)/g, ''); + const hostIPVersion = isIP(hostIp); + + if (hostIPVersion === 4 && /^127\./.test(hostIp)) { + return true; + } + + if (hostIPVersion === 6 && /^(((0+:){7})|(::(0+:){0,6}))0*1$/.test(hostIp)) { + return true; + } + + // 5. If origin's host component is "localhost" or falls within ".localhost", and the user agent conforms to the name resolution rules in [let-localhost-be-localhost], return "Potentially Trustworthy". + // We are returning FALSE here because we cannot ensure conformance to + // let-localhost-be-loalhost (https://tools.ietf.org/html/draft-west-let-localhost-be-localhost) + if (url.host === 'localhost' || url.host.endsWith('.localhost')) { + return false; + } + + // 6. If origin's scheme component is file, return "Potentially Trustworthy". + if (url.protocol === 'file:') { + return true; + } + + // 7. If origin's scheme component is one which the user agent considers to be authenticated, return "Potentially Trustworthy". + // Not supported + + // 8. If origin has been configured as a trustworthy origin, return "Potentially Trustworthy". + // Not supported + + // 9. Return "Not Trustworthy". + return false; +} + +/** + * @see {@link https://w3c.github.io/webappsec-secure-contexts/#is-url-trustworthy|Referrer Policy §3.3. Is url potentially trustworthy?} + * @param {external:URL} url + * @returns `true`: "Potentially Trustworthy", `false`: "Not Trustworthy" + */ +export function isUrlPotentiallyTrustworthy(url) { + // 1. If url is "about:blank" or "about:srcdoc", return "Potentially Trustworthy". + if (/^about:(blank|srcdoc)$/.test(url)) { + return true; + } + + // 2. If url's scheme is "data", return "Potentially Trustworthy". + if (url.protocol === 'data:') { + return true; + } + + // Note: The origin of blob: and filesystem: URLs is the origin of the context in which they were + // created. Therefore, blobs created in a trustworthy origin will themselves be potentially + // trustworthy. + if (/^(blob|filesystem):$/.test(url.protocol)) { + return true; + } + + // 3. Return the result of executing §3.2 Is origin potentially trustworthy? on url's origin. + return isOriginPotentiallyTrustworthy(url); +} + +/** + * Modifies the referrerURL to enforce any extra security policy considerations. + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer|Referrer Policy §8.3. Determine request's Referrer}, step 7 + * @callback module:utils/referrer~referrerURLCallback + * @param {external:URL} referrerURL + * @returns {external:URL} modified referrerURL + */ + +/** + * Modifies the referrerOrigin to enforce any extra security policy considerations. + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer|Referrer Policy §8.3. Determine request's Referrer}, step 7 + * @callback module:utils/referrer~referrerOriginCallback + * @param {external:URL} referrerOrigin + * @returns {external:URL} modified referrerOrigin + */ + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer|Referrer Policy §8.3. Determine request's Referrer} + * @param {Request} request + * @param {object} o + * @param {module:utils/referrer~referrerURLCallback} o.referrerURLCallback + * @param {module:utils/referrer~referrerOriginCallback} o.referrerOriginCallback + * @returns {external:URL} Request's referrer + */ +export function determineRequestsReferrer(request, {referrerURLCallback, referrerOriginCallback} = {}) { + // There are 2 notes in the specification about invalid pre-conditions. We return null, here, for + // these cases: + // > Note: If request's referrer is "no-referrer", Fetch will not call into this algorithm. + // > Note: If request's referrer policy is the empty string, Fetch will not call into this + // > algorithm. + if (request.referrer === 'no-referrer' || request.referrerPolicy === '') { + return null; + } + + // 1. Let policy be request's associated referrer policy. + const policy = request.referrerPolicy; + + // 2. Let environment be request's client. + // not applicable to node.js + + // 3. Switch on request's referrer: + if (request.referrer === 'about:client') { + return 'no-referrer'; + } + + // "a URL": Let referrerSource be request's referrer. + const referrerSource = request.referrer; + + // 4. Let request's referrerURL be the result of stripping referrerSource for use as a referrer. + let referrerURL = stripURLForUseAsAReferrer(referrerSource); + + // 5. Let referrerOrigin be the result of stripping referrerSource for use as a referrer, with the + // origin-only flag set to true. + let referrerOrigin = stripURLForUseAsAReferrer(referrerSource, true); + + // 6. If the result of serializing referrerURL is a string whose length is greater than 4096, set + // referrerURL to referrerOrigin. + if (referrerURL.toString().length > 4096) { + referrerURL = referrerOrigin; + } + + // 7. The user agent MAY alter referrerURL or referrerOrigin at this point to enforce arbitrary + // policy considerations in the interests of minimizing data leakage. For example, the user + // agent could strip the URL down to an origin, modify its host, replace it with an empty + // string, etc. + if (referrerURLCallback) { + referrerURL = referrerURLCallback(referrerURL); + } + + if (referrerOriginCallback) { + referrerOrigin = referrerOriginCallback(referrerOrigin); + } + + // 8.Execute the statements corresponding to the value of policy: + const currentURL = new URL(request.url); + + switch (policy) { + case 'no-referrer': + return 'no-referrer'; + + case 'origin': + return referrerOrigin; + + case 'unsafe-url': + return referrerURL; + + case 'strict-origin': + // 1. If referrerURL is a potentially trustworthy URL and request's current URL is not a + // potentially trustworthy URL, then return no referrer. + if (isUrlPotentiallyTrustworthy(referrerURL) && !isUrlPotentiallyTrustworthy(currentURL)) { + return 'no-referrer'; + } + + // 2. Return referrerOrigin. + return referrerOrigin.toString(); + + case 'strict-origin-when-cross-origin': + // 1. If the origin of referrerURL and the origin of request's current URL are the same, then + // return referrerURL. + if (referrerURL.origin === currentURL.origin) { + return referrerURL; + } + + // 2. If referrerURL is a potentially trustworthy URL and request's current URL is not a + // potentially trustworthy URL, then return no referrer. + if (isUrlPotentiallyTrustworthy(referrerURL) && !isUrlPotentiallyTrustworthy(currentURL)) { + return 'no-referrer'; + } + + // 3. Return referrerOrigin. + return referrerOrigin; + + case 'same-origin': + // 1. If the origin of referrerURL and the origin of request's current URL are the same, then + // return referrerURL. + if (referrerURL.origin === currentURL.origin) { + return referrerURL; + } + + // 2. Return no referrer. + return 'no-referrer'; + + case 'origin-when-cross-origin': + // 1. If the origin of referrerURL and the origin of request's current URL are the same, then + // return referrerURL. + if (referrerURL.origin === currentURL.origin) { + return referrerURL; + } + + // Return referrerOrigin. + return referrerOrigin; + + case 'no-referrer-when-downgrade': + // 1. If referrerURL is a potentially trustworthy URL and request's current URL is not a + // potentially trustworthy URL, then return no referrer. + if (isUrlPotentiallyTrustworthy(referrerURL) && !isUrlPotentiallyTrustworthy(currentURL)) { + return 'no-referrer'; + } + + // 2. Return referrerURL. + return referrerURL; + + default: + throw new TypeError(`Invalid referrerPolicy: ${policy}`); + } +} + +/** + * @see {@link https://w3c.github.io/webappsec-referrer-policy/#parse-referrer-policy-from-header|Referrer Policy §8.1. Parse a referrer policy from a Referrer-Policy header} + * @param {Headers} headers Response headers + * @returns {string} policy + */ +export function parseReferrerPolicyFromHeader(headers) { + // 1. Let policy-tokens be the result of extracting header list values given `Referrer-Policy` + // and response’s header list. + const policyTokens = (headers.get('referrer-policy') || '').split(/[,\s]+/); + + // 2. Let policy be the empty string. + let policy = ''; + + // 3. For each token in policy-tokens, if token is a referrer policy and token is not the empty + // string, then set policy to token. + // Note: This algorithm loops over multiple policy values to allow deployment of new policy + // values with fallbacks for older user agents, as described in § 11.1 Unknown Policy Values. + for (const token of policyTokens) { + if (token && ReferrerPolicy.has(token)) { + policy = token; + } + } + + // 4. Return policy. + return policy; +} diff --git a/node_modules/proxy-from-env/.eslintrc b/node_modules/proxy-from-env/.eslintrc new file mode 100644 index 0000000..a51449b --- /dev/null +++ b/node_modules/proxy-from-env/.eslintrc @@ -0,0 +1,29 @@ +{ + "env": { + "node": true + }, + "rules": { + "array-bracket-spacing": [2, "never"], + "block-scoped-var": 2, + "brace-style": [2, "1tbs"], + "camelcase": 1, + "computed-property-spacing": [2, "never"], + "curly": 2, + "eol-last": 2, + "eqeqeq": [2, "smart"], + "max-depth": [1, 3], + "max-len": [1, 80], + "max-statements": [1, 15], + "new-cap": 1, + "no-extend-native": 2, + "no-mixed-spaces-and-tabs": 2, + "no-trailing-spaces": 2, + "no-unused-vars": 1, + "no-use-before-define": [2, "nofunc"], + "object-curly-spacing": [2, "never"], + "quotes": [2, "single", "avoid-escape"], + "semi": [2, "always"], + "keyword-spacing": [2, {"before": true, "after": true}], + "space-unary-ops": 2 + } +} diff --git a/node_modules/proxy-from-env/.travis.yml b/node_modules/proxy-from-env/.travis.yml new file mode 100644 index 0000000..64a05f9 --- /dev/null +++ b/node_modules/proxy-from-env/.travis.yml @@ -0,0 +1,10 @@ +language: node_js +node_js: + - node + - lts/* +script: + - npm run lint + # test-coverage will also run the tests, but does not print helpful output upon test failure. + # So we also run the tests separately. + - npm run test + - npm run test-coverage && cat coverage/lcov.info | ./node_modules/.bin/coveralls && rm -rf coverage diff --git a/node_modules/proxy-from-env/LICENSE b/node_modules/proxy-from-env/LICENSE new file mode 100644 index 0000000..8f25097 --- /dev/null +++ b/node_modules/proxy-from-env/LICENSE @@ -0,0 +1,20 @@ +The MIT License + +Copyright (C) 2016-2018 Rob Wu + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR +COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/proxy-from-env/README.md b/node_modules/proxy-from-env/README.md new file mode 100644 index 0000000..e82520c --- /dev/null +++ b/node_modules/proxy-from-env/README.md @@ -0,0 +1,131 @@ +# proxy-from-env + +[![Build Status](https://travis-ci.org/Rob--W/proxy-from-env.svg?branch=master)](https://travis-ci.org/Rob--W/proxy-from-env) +[![Coverage Status](https://coveralls.io/repos/github/Rob--W/proxy-from-env/badge.svg?branch=master)](https://coveralls.io/github/Rob--W/proxy-from-env?branch=master) + +`proxy-from-env` is a Node.js package that exports a function (`getProxyForUrl`) +that takes an input URL (a string or +[`url.parse`](https://nodejs.org/docs/latest/api/url.html#url_url_parsing)'s +return value) and returns the desired proxy URL (also a string) based on +standard proxy environment variables. If no proxy is set, an empty string is +returned. + +It is your responsibility to actually proxy the request using the given URL. + +Installation: + +```sh +npm install proxy-from-env +``` + +## Example +This example shows how the data for a URL can be fetched via the +[`http` module](https://nodejs.org/api/http.html), in a proxy-aware way. + +```javascript +var http = require('http'); +var parseUrl = require('url').parse; +var getProxyForUrl = require('proxy-from-env').getProxyForUrl; + +var some_url = 'http://example.com/something'; + +// // Example, if there is a proxy server at 10.0.0.1:1234, then setting the +// // http_proxy environment variable causes the request to go through a proxy. +// process.env.http_proxy = 'http://10.0.0.1:1234'; +// +// // But if the host to be proxied is listed in NO_PROXY, then the request is +// // not proxied (but a direct request is made). +// process.env.no_proxy = 'example.com'; + +var proxy_url = getProxyForUrl(some_url); // <-- Our magic. +if (proxy_url) { + // Should be proxied through proxy_url. + var parsed_some_url = parseUrl(some_url); + var parsed_proxy_url = parseUrl(proxy_url); + // A HTTP proxy is quite simple. It is similar to a normal request, except the + // path is an absolute URL, and the proxied URL's host is put in the header + // instead of the server's actual host. + httpOptions = { + protocol: parsed_proxy_url.protocol, + hostname: parsed_proxy_url.hostname, + port: parsed_proxy_url.port, + path: parsed_some_url.href, + headers: { + Host: parsed_some_url.host, // = host name + optional port. + }, + }; +} else { + // Direct request. + httpOptions = some_url; +} +http.get(httpOptions, function(res) { + var responses = []; + res.on('data', function(chunk) { responses.push(chunk); }); + res.on('end', function() { console.log(responses.join('')); }); +}); + +``` + +## Environment variables +The environment variables can be specified in lowercase or uppercase, with the +lowercase name having precedence over the uppercase variant. A variable that is +not set has the same meaning as a variable that is set but has no value. + +### NO\_PROXY + +`NO_PROXY` is a list of host names (optionally with a port). If the input URL +matches any of the entries in `NO_PROXY`, then the input URL should be fetched +by a direct request (i.e. without a proxy). + +Matching follows the following rules: + +- `NO_PROXY=*` disables all proxies. +- Space and commas may be used to separate the entries in the `NO_PROXY` list. +- If `NO_PROXY` does not contain any entries, then proxies are never disabled. +- If a port is added after the host name, then the ports must match. If the URL + does not have an explicit port name, the protocol's default port is used. +- Generally, the proxy is only disabled if the host name is an exact match for + an entry in the `NO_PROXY` list. The only exceptions are entries that start + with a dot or with a wildcard; then the proxy is disabled if the host name + ends with the entry. + +See `test.js` for examples of what should match and what does not. + +### \*\_PROXY + +The environment variable used for the proxy depends on the protocol of the URL. +For example, `https://example.com` uses the "https" protocol, and therefore the +proxy to be used is `HTTPS_PROXY` (_NOT_ `HTTP_PROXY`, which is _only_ used for +http:-URLs). + +The library is not limited to http(s), other schemes such as +`FTP_PROXY` (ftp:), +`WSS_PROXY` (wss:), +`WS_PROXY` (ws:) +are also supported. + +If present, `ALL_PROXY` is used as fallback if there is no other match. + + +## External resources +The exact way of parsing the environment variables is not codified in any +standard. This library is designed to be compatible with formats as expected by +existing software. +The following resources were used to determine the desired behavior: + +- cURL: + https://curl.haxx.se/docs/manpage.html#ENVIRONMENT + https://github.com/curl/curl/blob/4af40b3646d3b09f68e419f7ca866ff395d1f897/lib/url.c#L4446-L4514 + https://github.com/curl/curl/blob/4af40b3646d3b09f68e419f7ca866ff395d1f897/lib/url.c#L4608-L4638 + +- wget: + https://www.gnu.org/software/wget/manual/wget.html#Proxies + http://git.savannah.gnu.org/cgit/wget.git/tree/src/init.c?id=636a5f9a1c508aa39e35a3a8e9e54520a284d93d#n383 + http://git.savannah.gnu.org/cgit/wget.git/tree/src/retr.c?id=93c1517c4071c4288ba5a4b038e7634e4c6b5482#n1278 + +- W3: + https://www.w3.org/Daemon/User/Proxies/ProxyClients.html + +- Python's urllib: + https://github.com/python/cpython/blob/936135bb97fe04223aa30ca6e98eac8f3ed6b349/Lib/urllib/request.py#L755-L782 + https://github.com/python/cpython/blob/936135bb97fe04223aa30ca6e98eac8f3ed6b349/Lib/urllib/request.py#L2444-L2479 diff --git a/node_modules/proxy-from-env/index.js b/node_modules/proxy-from-env/index.js new file mode 100644 index 0000000..df75004 --- /dev/null +++ b/node_modules/proxy-from-env/index.js @@ -0,0 +1,108 @@ +'use strict'; + +var parseUrl = require('url').parse; + +var DEFAULT_PORTS = { + ftp: 21, + gopher: 70, + http: 80, + https: 443, + ws: 80, + wss: 443, +}; + +var stringEndsWith = String.prototype.endsWith || function(s) { + return s.length <= this.length && + this.indexOf(s, this.length - s.length) !== -1; +}; + +/** + * @param {string|object} url - The URL, or the result from url.parse. + * @return {string} The URL of the proxy that should handle the request to the + * given URL. If no proxy is set, this will be an empty string. + */ +function getProxyForUrl(url) { + var parsedUrl = typeof url === 'string' ? parseUrl(url) : url || {}; + var proto = parsedUrl.protocol; + var hostname = parsedUrl.host; + var port = parsedUrl.port; + if (typeof hostname !== 'string' || !hostname || typeof proto !== 'string') { + return ''; // Don't proxy URLs without a valid scheme or host. + } + + proto = proto.split(':', 1)[0]; + // Stripping ports in this way instead of using parsedUrl.hostname to make + // sure that the brackets around IPv6 addresses are kept. + hostname = hostname.replace(/:\d*$/, ''); + port = parseInt(port) || DEFAULT_PORTS[proto] || 0; + if (!shouldProxy(hostname, port)) { + return ''; // Don't proxy URLs that match NO_PROXY. + } + + var proxy = + getEnv('npm_config_' + proto + '_proxy') || + getEnv(proto + '_proxy') || + getEnv('npm_config_proxy') || + getEnv('all_proxy'); + if (proxy && proxy.indexOf('://') === -1) { + // Missing scheme in proxy, default to the requested URL's scheme. + proxy = proto + '://' + proxy; + } + return proxy; +} + +/** + * Determines whether a given URL should be proxied. + * + * @param {string} hostname - The host name of the URL. + * @param {number} port - The effective port of the URL. + * @returns {boolean} Whether the given URL should be proxied. + * @private + */ +function shouldProxy(hostname, port) { + var NO_PROXY = + (getEnv('npm_config_no_proxy') || getEnv('no_proxy')).toLowerCase(); + if (!NO_PROXY) { + return true; // Always proxy if NO_PROXY is not set. + } + if (NO_PROXY === '*') { + return false; // Never proxy if wildcard is set. + } + + return NO_PROXY.split(/[,\s]/).every(function(proxy) { + if (!proxy) { + return true; // Skip zero-length hosts. + } + var parsedProxy = proxy.match(/^(.+):(\d+)$/); + var parsedProxyHostname = parsedProxy ? parsedProxy[1] : proxy; + var parsedProxyPort = parsedProxy ? parseInt(parsedProxy[2]) : 0; + if (parsedProxyPort && parsedProxyPort !== port) { + return true; // Skip if ports don't match. + } + + if (!/^[.*]/.test(parsedProxyHostname)) { + // No wildcards, so stop proxying if there is an exact match. + return hostname !== parsedProxyHostname; + } + + if (parsedProxyHostname.charAt(0) === '*') { + // Remove leading wildcard. + parsedProxyHostname = parsedProxyHostname.slice(1); + } + // Stop proxying if the hostname ends with the no_proxy host. + return !stringEndsWith.call(hostname, parsedProxyHostname); + }); +} + +/** + * Get the value for an environment variable. + * + * @param {string} key - The name of the environment variable. + * @return {string} The value of the environment variable. + * @private + */ +function getEnv(key) { + return process.env[key.toLowerCase()] || process.env[key.toUpperCase()] || ''; +} + +exports.getProxyForUrl = getProxyForUrl; diff --git a/node_modules/proxy-from-env/package.json b/node_modules/proxy-from-env/package.json new file mode 100644 index 0000000..be2b845 --- /dev/null +++ b/node_modules/proxy-from-env/package.json @@ -0,0 +1,34 @@ +{ + "name": "proxy-from-env", + "version": "1.1.0", + "description": "Offers getProxyForUrl to get the proxy URL for a URL, respecting the *_PROXY (e.g. HTTP_PROXY) and NO_PROXY environment variables.", + "main": "index.js", + "scripts": { + "lint": "eslint *.js", + "test": "mocha ./test.js --reporter spec", + "test-coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter spec" + }, + "repository": { + "type": "git", + "url": "https://github.com/Rob--W/proxy-from-env.git" + }, + "keywords": [ + "proxy", + "http_proxy", + "https_proxy", + "no_proxy", + "environment" + ], + "author": "Rob Wu (https://robwu.nl/)", + "license": "MIT", + "bugs": { + "url": "https://github.com/Rob--W/proxy-from-env/issues" + }, + "homepage": "https://github.com/Rob--W/proxy-from-env#readme", + "devDependencies": { + "coveralls": "^3.0.9", + "eslint": "^6.8.0", + "istanbul": "^0.4.5", + "mocha": "^7.1.0" + } +} diff --git a/node_modules/proxy-from-env/test.js b/node_modules/proxy-from-env/test.js new file mode 100644 index 0000000..abf6542 --- /dev/null +++ b/node_modules/proxy-from-env/test.js @@ -0,0 +1,483 @@ +/* eslint max-statements:0 */ +'use strict'; + +var assert = require('assert'); +var parseUrl = require('url').parse; + +var getProxyForUrl = require('./').getProxyForUrl; + +// Runs the callback with process.env temporarily set to env. +function runWithEnv(env, callback) { + var originalEnv = process.env; + process.env = env; + try { + callback(); + } finally { + process.env = originalEnv; + } +} + +// Defines a test case that checks whether getProxyForUrl(input) === expected. +function testProxyUrl(env, expected, input) { + assert(typeof env === 'object' && env !== null); + // Copy object to make sure that the in param does not get modified between + // the call of this function and the use of it below. + env = JSON.parse(JSON.stringify(env)); + + var title = 'getProxyForUrl(' + JSON.stringify(input) + ')' + + ' === ' + JSON.stringify(expected); + + // Save call stack for later use. + var stack = {}; + Error.captureStackTrace(stack, testProxyUrl); + // Only use the last stack frame because that shows where this function is + // called, and that is sufficient for our purpose. No need to flood the logs + // with an uninteresting stack trace. + stack = stack.stack.split('\n', 2)[1]; + + it(title, function() { + var actual; + runWithEnv(env, function() { + actual = getProxyForUrl(input); + }); + if (expected === actual) { + return; // Good! + } + try { + assert.strictEqual(expected, actual); // Create a formatted error message. + // Should not happen because previously we determined expected !== actual. + throw new Error('assert.strictEqual passed. This is impossible!'); + } catch (e) { + // Use the original stack trace, so we can see a helpful line number. + e.stack = e.message + stack; + throw e; + } + }); +} + +describe('getProxyForUrl', function() { + describe('No proxy variables', function() { + var env = {}; + testProxyUrl(env, '', 'http://example.com'); + testProxyUrl(env, '', 'https://example.com'); + testProxyUrl(env, '', 'ftp://example.com'); + }); + + describe('Invalid URLs', function() { + var env = {}; + env.ALL_PROXY = 'http://unexpected.proxy'; + testProxyUrl(env, '', 'bogus'); + testProxyUrl(env, '', '//example.com'); + testProxyUrl(env, '', '://example.com'); + testProxyUrl(env, '', '://'); + testProxyUrl(env, '', '/path'); + testProxyUrl(env, '', ''); + testProxyUrl(env, '', 'http:'); + testProxyUrl(env, '', 'http:/'); + testProxyUrl(env, '', 'http://'); + testProxyUrl(env, '', 'prototype://'); + testProxyUrl(env, '', 'hasOwnProperty://'); + testProxyUrl(env, '', '__proto__://'); + testProxyUrl(env, '', undefined); + testProxyUrl(env, '', null); + testProxyUrl(env, '', {}); + testProxyUrl(env, '', {host: 'x', protocol: 1}); + testProxyUrl(env, '', {host: 1, protocol: 'x'}); + }); + + describe('http_proxy and HTTP_PROXY', function() { + var env = {}; + env.HTTP_PROXY = 'http://http-proxy'; + + testProxyUrl(env, '', 'https://example'); + testProxyUrl(env, 'http://http-proxy', 'http://example'); + testProxyUrl(env, 'http://http-proxy', parseUrl('http://example')); + + // eslint-disable-next-line camelcase + env.http_proxy = 'http://priority'; + testProxyUrl(env, 'http://priority', 'http://example'); + }); + + describe('http_proxy with non-sensical value', function() { + var env = {}; + // Crazy values should be passed as-is. It is the responsibility of the + // one who launches the application that the value makes sense. + // TODO: Should we be stricter and perform validation? + env.HTTP_PROXY = 'Crazy \n!() { ::// }'; + testProxyUrl(env, 'Crazy \n!() { ::// }', 'http://wow'); + + // The implementation assumes that the HTTP_PROXY environment variable is + // somewhat reasonable, and if the scheme is missing, it is added. + // Garbage in, garbage out some would say... + env.HTTP_PROXY = 'crazy without colon slash slash'; + testProxyUrl(env, 'http://crazy without colon slash slash', 'http://wow'); + }); + + describe('https_proxy and HTTPS_PROXY', function() { + var env = {}; + // Assert that there is no fall back to http_proxy + env.HTTP_PROXY = 'http://unexpected.proxy'; + testProxyUrl(env, '', 'https://example'); + + env.HTTPS_PROXY = 'http://https-proxy'; + testProxyUrl(env, 'http://https-proxy', 'https://example'); + + // eslint-disable-next-line camelcase + env.https_proxy = 'http://priority'; + testProxyUrl(env, 'http://priority', 'https://example'); + }); + + describe('ftp_proxy', function() { + var env = {}; + // Something else than http_proxy / https, as a sanity check. + env.FTP_PROXY = 'http://ftp-proxy'; + + testProxyUrl(env, 'http://ftp-proxy', 'ftp://example'); + testProxyUrl(env, '', 'ftps://example'); + }); + + describe('all_proxy', function() { + var env = {}; + env.ALL_PROXY = 'http://catch-all'; + testProxyUrl(env, 'http://catch-all', 'https://example'); + + // eslint-disable-next-line camelcase + env.all_proxy = 'http://priority'; + testProxyUrl(env, 'http://priority', 'https://example'); + }); + + describe('all_proxy without scheme', function() { + var env = {}; + env.ALL_PROXY = 'noscheme'; + testProxyUrl(env, 'http://noscheme', 'http://example'); + testProxyUrl(env, 'https://noscheme', 'https://example'); + + // The module does not impose restrictions on the scheme. + testProxyUrl(env, 'bogus-scheme://noscheme', 'bogus-scheme://example'); + + // But the URL should still be valid. + testProxyUrl(env, '', 'bogus'); + }); + + describe('no_proxy empty', function() { + var env = {}; + env.HTTPS_PROXY = 'http://proxy'; + + // NO_PROXY set but empty. + env.NO_PROXY = ''; + testProxyUrl(env, 'http://proxy', 'https://example'); + + // No entries in NO_PROXY (comma). + env.NO_PROXY = ','; + testProxyUrl(env, 'http://proxy', 'https://example'); + + // No entries in NO_PROXY (whitespace). + env.NO_PROXY = ' '; + testProxyUrl(env, 'http://proxy', 'https://example'); + + // No entries in NO_PROXY (multiple whitespace / commas). + env.NO_PROXY = ',\t,,,\n, ,\r'; + testProxyUrl(env, 'http://proxy', 'https://example'); + }); + + describe('no_proxy=example (single host)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = 'example'; + testProxyUrl(env, '', 'http://example'); + testProxyUrl(env, '', 'http://example:80'); + testProxyUrl(env, '', 'http://example:0'); + testProxyUrl(env, '', 'http://example:1337'); + testProxyUrl(env, 'http://proxy', 'http://sub.example'); + testProxyUrl(env, 'http://proxy', 'http://prefexample'); + testProxyUrl(env, 'http://proxy', 'http://example.no'); + testProxyUrl(env, 'http://proxy', 'http://a.b.example'); + testProxyUrl(env, 'http://proxy', 'http://host/example'); + }); + + describe('no_proxy=sub.example (subdomain)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = 'sub.example'; + testProxyUrl(env, 'http://proxy', 'http://example'); + testProxyUrl(env, 'http://proxy', 'http://example:80'); + testProxyUrl(env, 'http://proxy', 'http://example:0'); + testProxyUrl(env, 'http://proxy', 'http://example:1337'); + testProxyUrl(env, '', 'http://sub.example'); + testProxyUrl(env, 'http://proxy', 'http://no.sub.example'); + testProxyUrl(env, 'http://proxy', 'http://sub-example'); + testProxyUrl(env, 'http://proxy', 'http://example.sub'); + }); + + describe('no_proxy=example:80 (host + port)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = 'example:80'; + testProxyUrl(env, '', 'http://example'); + testProxyUrl(env, '', 'http://example:80'); + testProxyUrl(env, '', 'http://example:0'); + testProxyUrl(env, 'http://proxy', 'http://example:1337'); + testProxyUrl(env, 'http://proxy', 'http://sub.example'); + testProxyUrl(env, 'http://proxy', 'http://prefexample'); + testProxyUrl(env, 'http://proxy', 'http://example.no'); + testProxyUrl(env, 'http://proxy', 'http://a.b.example'); + }); + + describe('no_proxy=.example (host suffix)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '.example'; + testProxyUrl(env, 'http://proxy', 'http://example'); + testProxyUrl(env, 'http://proxy', 'http://example:80'); + testProxyUrl(env, 'http://proxy', 'http://example:1337'); + testProxyUrl(env, '', 'http://sub.example'); + testProxyUrl(env, '', 'http://sub.example:80'); + testProxyUrl(env, '', 'http://sub.example:1337'); + testProxyUrl(env, 'http://proxy', 'http://prefexample'); + testProxyUrl(env, 'http://proxy', 'http://example.no'); + testProxyUrl(env, '', 'http://a.b.example'); + }); + + describe('no_proxy=*', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + env.NO_PROXY = '*'; + testProxyUrl(env, '', 'http://example.com'); + }); + + describe('no_proxy=*.example (host suffix with *.)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '*.example'; + testProxyUrl(env, 'http://proxy', 'http://example'); + testProxyUrl(env, 'http://proxy', 'http://example:80'); + testProxyUrl(env, 'http://proxy', 'http://example:1337'); + testProxyUrl(env, '', 'http://sub.example'); + testProxyUrl(env, '', 'http://sub.example:80'); + testProxyUrl(env, '', 'http://sub.example:1337'); + testProxyUrl(env, 'http://proxy', 'http://prefexample'); + testProxyUrl(env, 'http://proxy', 'http://example.no'); + testProxyUrl(env, '', 'http://a.b.example'); + }); + + describe('no_proxy=*example (substring suffix)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '*example'; + testProxyUrl(env, '', 'http://example'); + testProxyUrl(env, '', 'http://example:80'); + testProxyUrl(env, '', 'http://example:1337'); + testProxyUrl(env, '', 'http://sub.example'); + testProxyUrl(env, '', 'http://sub.example:80'); + testProxyUrl(env, '', 'http://sub.example:1337'); + testProxyUrl(env, '', 'http://prefexample'); + testProxyUrl(env, '', 'http://a.b.example'); + testProxyUrl(env, 'http://proxy', 'http://example.no'); + testProxyUrl(env, 'http://proxy', 'http://host/example'); + }); + + describe('no_proxy=.*example (arbitrary wildcards are NOT supported)', + function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '.*example'; + testProxyUrl(env, 'http://proxy', 'http://example'); + testProxyUrl(env, 'http://proxy', 'http://sub.example'); + testProxyUrl(env, 'http://proxy', 'http://sub.example'); + testProxyUrl(env, 'http://proxy', 'http://prefexample'); + testProxyUrl(env, 'http://proxy', 'http://x.prefexample'); + testProxyUrl(env, 'http://proxy', 'http://a.b.example'); + }); + + describe('no_proxy=[::1],[::2]:80,10.0.0.1,10.0.0.2:80 (IP addresses)', + function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '[::1],[::2]:80,10.0.0.1,10.0.0.2:80'; + testProxyUrl(env, '', 'http://[::1]/'); + testProxyUrl(env, '', 'http://[::1]:80/'); + testProxyUrl(env, '', 'http://[::1]:1337/'); + + testProxyUrl(env, '', 'http://[::2]/'); + testProxyUrl(env, '', 'http://[::2]:80/'); + testProxyUrl(env, 'http://proxy', 'http://[::2]:1337/'); + + testProxyUrl(env, '', 'http://10.0.0.1/'); + testProxyUrl(env, '', 'http://10.0.0.1:80/'); + testProxyUrl(env, '', 'http://10.0.0.1:1337/'); + + testProxyUrl(env, '', 'http://10.0.0.2/'); + testProxyUrl(env, '', 'http://10.0.0.2:80/'); + testProxyUrl(env, 'http://proxy', 'http://10.0.0.2:1337/'); + }); + + describe('no_proxy=127.0.0.1/32 (CIDR is NOT supported)', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '127.0.0.1/32'; + testProxyUrl(env, 'http://proxy', 'http://127.0.0.1'); + testProxyUrl(env, 'http://proxy', 'http://127.0.0.1/32'); + }); + + describe('no_proxy=127.0.0.1 does NOT match localhost', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + + env.NO_PROXY = '127.0.0.1'; + testProxyUrl(env, '', 'http://127.0.0.1'); + // We're not performing DNS queries, so this shouldn't match. + testProxyUrl(env, 'http://proxy', 'http://localhost'); + }); + + describe('no_proxy with protocols that have a default port', function() { + var env = {}; + env.WS_PROXY = 'http://ws'; + env.WSS_PROXY = 'http://wss'; + env.HTTP_PROXY = 'http://http'; + env.HTTPS_PROXY = 'http://https'; + env.GOPHER_PROXY = 'http://gopher'; + env.FTP_PROXY = 'http://ftp'; + env.ALL_PROXY = 'http://all'; + + env.NO_PROXY = 'xxx:21,xxx:70,xxx:80,xxx:443'; + + testProxyUrl(env, '', 'http://xxx'); + testProxyUrl(env, '', 'http://xxx:80'); + testProxyUrl(env, 'http://http', 'http://xxx:1337'); + + testProxyUrl(env, '', 'ws://xxx'); + testProxyUrl(env, '', 'ws://xxx:80'); + testProxyUrl(env, 'http://ws', 'ws://xxx:1337'); + + testProxyUrl(env, '', 'https://xxx'); + testProxyUrl(env, '', 'https://xxx:443'); + testProxyUrl(env, 'http://https', 'https://xxx:1337'); + + testProxyUrl(env, '', 'wss://xxx'); + testProxyUrl(env, '', 'wss://xxx:443'); + testProxyUrl(env, 'http://wss', 'wss://xxx:1337'); + + testProxyUrl(env, '', 'gopher://xxx'); + testProxyUrl(env, '', 'gopher://xxx:70'); + testProxyUrl(env, 'http://gopher', 'gopher://xxx:1337'); + + testProxyUrl(env, '', 'ftp://xxx'); + testProxyUrl(env, '', 'ftp://xxx:21'); + testProxyUrl(env, 'http://ftp', 'ftp://xxx:1337'); + }); + + describe('no_proxy should not be case-sensitive', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + env.NO_PROXY = 'XXX,YYY,ZzZ'; + + testProxyUrl(env, '', 'http://xxx'); + testProxyUrl(env, '', 'http://XXX'); + testProxyUrl(env, '', 'http://yyy'); + testProxyUrl(env, '', 'http://YYY'); + testProxyUrl(env, '', 'http://ZzZ'); + testProxyUrl(env, '', 'http://zZz'); + }); + + describe('NPM proxy configuration', function() { + describe('npm_config_http_proxy should work', function() { + var env = {}; + // eslint-disable-next-line camelcase + env.npm_config_http_proxy = 'http://http-proxy'; + + testProxyUrl(env, '', 'https://example'); + testProxyUrl(env, 'http://http-proxy', 'http://example'); + + // eslint-disable-next-line camelcase + env.npm_config_http_proxy = 'http://priority'; + testProxyUrl(env, 'http://priority', 'http://example'); + }); + // eslint-disable-next-line max-len + describe('npm_config_http_proxy should take precedence over HTTP_PROXY and npm_config_proxy', function() { + var env = {}; + // eslint-disable-next-line camelcase + env.npm_config_http_proxy = 'http://http-proxy'; + // eslint-disable-next-line camelcase + env.npm_config_proxy = 'http://unexpected-proxy'; + env.HTTP_PROXY = 'http://unexpected-proxy'; + + testProxyUrl(env, 'http://http-proxy', 'http://example'); + }); + describe('npm_config_https_proxy should work', function() { + var env = {}; + // eslint-disable-next-line camelcase + env.npm_config_http_proxy = 'http://unexpected.proxy'; + testProxyUrl(env, '', 'https://example'); + + // eslint-disable-next-line camelcase + env.npm_config_https_proxy = 'http://https-proxy'; + testProxyUrl(env, 'http://https-proxy', 'https://example'); + + // eslint-disable-next-line camelcase + env.npm_config_https_proxy = 'http://priority'; + testProxyUrl(env, 'http://priority', 'https://example'); + }); + // eslint-disable-next-line max-len + describe('npm_config_https_proxy should take precedence over HTTPS_PROXY and npm_config_proxy', function() { + var env = {}; + // eslint-disable-next-line camelcase + env.npm_config_https_proxy = 'http://https-proxy'; + // eslint-disable-next-line camelcase + env.npm_config_proxy = 'http://unexpected-proxy'; + env.HTTPS_PROXY = 'http://unexpected-proxy'; + + testProxyUrl(env, 'http://https-proxy', 'https://example'); + }); + describe('npm_config_proxy should work', function() { + var env = {}; + // eslint-disable-next-line camelcase + env.npm_config_proxy = 'http://http-proxy'; + testProxyUrl(env, 'http://http-proxy', 'http://example'); + testProxyUrl(env, 'http://http-proxy', 'https://example'); + + // eslint-disable-next-line camelcase + env.npm_config_proxy = 'http://priority'; + testProxyUrl(env, 'http://priority', 'http://example'); + testProxyUrl(env, 'http://priority', 'https://example'); + }); + // eslint-disable-next-line max-len + describe('HTTP_PROXY and HTTPS_PROXY should take precedence over npm_config_proxy', function() { + var env = {}; + env.HTTP_PROXY = 'http://http-proxy'; + env.HTTPS_PROXY = 'http://https-proxy'; + // eslint-disable-next-line camelcase + env.npm_config_proxy = 'http://unexpected-proxy'; + testProxyUrl(env, 'http://http-proxy', 'http://example'); + testProxyUrl(env, 'http://https-proxy', 'https://example'); + }); + describe('npm_config_no_proxy should work', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + // eslint-disable-next-line camelcase + env.npm_config_no_proxy = 'example'; + + testProxyUrl(env, '', 'http://example'); + testProxyUrl(env, 'http://proxy', 'http://otherwebsite'); + }); + // eslint-disable-next-line max-len + describe('npm_config_no_proxy should take precedence over NO_PROXY', function() { + var env = {}; + env.HTTP_PROXY = 'http://proxy'; + env.NO_PROXY = 'otherwebsite'; + // eslint-disable-next-line camelcase + env.npm_config_no_proxy = 'example'; + + testProxyUrl(env, '', 'http://example'); + testProxyUrl(env, 'http://proxy', 'http://otherwebsite'); + }); + }); +}); diff --git a/node_modules/web-streams-polyfill/LICENSE b/node_modules/web-streams-polyfill/LICENSE new file mode 100644 index 0000000..9fe85ac --- /dev/null +++ b/node_modules/web-streams-polyfill/LICENSE @@ -0,0 +1,22 @@ +The MIT License (MIT) + +Copyright (c) 2024 Mattias Buelens +Copyright (c) 2016 Diwank Singh Tomer + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/node_modules/web-streams-polyfill/README.md b/node_modules/web-streams-polyfill/README.md new file mode 100644 index 0000000..f4023ff --- /dev/null +++ b/node_modules/web-streams-polyfill/README.md @@ -0,0 +1,110 @@ +# web-streams-polyfill + +Web Streams, based on the WHATWG spec reference implementation. + +[![build status](https://api.travis-ci.com/MattiasBuelens/web-streams-polyfill.svg?branch=master)](https://travis-ci.com/MattiasBuelens/web-streams-polyfill) +[![npm version](https://img.shields.io/npm/v/web-streams-polyfill.svg)](https://www.npmjs.com/package/web-streams-polyfill) +[![license](https://img.shields.io/npm/l/web-streams-polyfill.svg)](https://github.com/MattiasBuelens/web-streams-polyfill/blob/master/LICENSE) + +## Links + + - [Official spec][spec] + - [Reference implementation][ref-impl] + +## Usage + +This library comes in multiple variants: +* `web-streams-polyfill`: a polyfill that replaces the native stream implementations. + Recommended for use in web apps supporting older browsers through a ` + + + +``` +Usage as a Node module: +```js +var streams = require("web-streams-polyfill/ponyfill"); +var readable = new streams.ReadableStream(); +``` +Usage as a ES2015 module: +```js +import { ReadableStream } from "web-streams-polyfill/ponyfill"; +const readable = new ReadableStream(); +``` + +## Compatibility + +The `polyfill` and `ponyfill` variants work in any ES5-compatible environment that has a global `Promise`. +If you need to support older browsers or Node versions that do not have a native `Promise` implementation +(check the [support table][promise-support]), you must first include a `Promise` polyfill +(e.g. [promise-polyfill][promise-polyfill]). + +The `polyfill/es6` and `ponyfill/es6` variants work in any ES2015-compatible environment. + +The `polyfill/es2018` and `ponyfill/es2018` variants work in any ES2018-compatible environment. + +[Async iterable support for `ReadableStream`][rs-asynciterator] is available in all variants, but requires an ES2018-compatible environment or a polyfill for `Symbol.asyncIterator`. + +[`WritableStreamDefaultController.signal`][ws-controller-signal] is available in all variants, but requires a global `AbortController` constructor. If necessary, consider using a polyfill such as [abortcontroller-polyfill]. + +[Reading with a BYOB reader][mdn-byob-read] is available in all variants, but requires `ArrayBuffer.prototype.transfer()` or `structuredClone()` to exist in order to correctly transfer the given view's buffer. If not available, then the buffer won't be transferred during the read. + +## Compliance + +The polyfill implements [version `4dc123a` (13 Nov 2023)][spec-snapshot] of the streams specification. + +The polyfill is tested against the same [web platform tests][wpt] that are used by browsers to test their native implementations. +The polyfill aims to pass all tests, although it allows some exceptions for practical reasons: +* The `es2018` variant passes all of the tests. +* The `es6` variant passes the same tests as the `es2018` variant, except for the [test for the prototype of `ReadableStream`'s async iterator][wpt-async-iterator-prototype]. + Retrieving the correct `%AsyncIteratorPrototype%` requires using an async generator (`async function* () {}`), which is invalid syntax before ES2018. + Instead, the polyfill [creates its own version][stub-async-iterator-prototype] which is functionally equivalent to the real prototype. +* The `es5` variant passes the same tests as the `es6` variant, except for various tests about specific characteristics of the constructors, properties and methods. + These test failures do not affect the run-time behavior of the polyfill. + For example: + * The `name` property of down-leveled constructors is incorrect. + * The `length` property of down-leveled constructors and methods with optional arguments is incorrect. + * Not all properties and methods are correctly marked as non-enumerable. + * Down-leveled class methods are not correctly marked as non-constructable. + +The type definitions are compatible with the built-in stream types of TypeScript 3.3. + +## Contributors + +Thanks to these people for their work on [the original polyfill][creatorrr-polyfill]: + + - Diwank Singh Tomer ([creatorrr](https://github.com/creatorrr)) + - Anders Riutta ([ariutta](https://github.com/ariutta)) + +[spec]: https://streams.spec.whatwg.org +[ref-impl]: https://github.com/whatwg/streams +[ponyfill]: https://github.com/sindresorhus/ponyfill +[promise-support]: https://kangax.github.io/compat-table/es6/#test-Promise +[promise-polyfill]: https://www.npmjs.com/package/promise-polyfill +[rs-asynciterator]: https://streams.spec.whatwg.org/#rs-asynciterator +[ws-controller-signal]: https://streams.spec.whatwg.org/#ws-default-controller-signal +[abortcontroller-polyfill]: https://www.npmjs.com/package/abortcontroller-polyfill +[mdn-byob-read]: https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBReader/read +[spec-snapshot]: https://streams.spec.whatwg.org/commit-snapshots/4dc123a6e7f7ba89a8c6a7975b021156f39cab52/ +[wpt]: https://github.com/web-platform-tests/wpt/tree/2a298b616b7c865917d7198a287310881cbfdd8d/streams +[wpt-async-iterator-prototype]: https://github.com/web-platform-tests/wpt/blob/2a298b616b7c865917d7198a287310881cbfdd8d/streams/readable-streams/async-iterator.any.js#L24 +[stub-async-iterator-prototype]: https://github.com/MattiasBuelens/web-streams-polyfill/blob/v2.0.0/src/target/es5/stub/async-iterator-prototype.ts +[creatorrr-polyfill]: https://github.com/creatorrr/web-streams-polyfill diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es2018.js b/node_modules/web-streams-polyfill/dist/polyfill.es2018.js new file mode 100644 index 0000000..20a929a --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es2018.js @@ -0,0 +1,4765 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.WebStreamsPolyfill = {})); +})(this, (function (exports) { 'use strict'; + + function noop() { + return undefined; + } + + function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + const rethrowAssertionErrorRejection = noop; + function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } + } + + const originalPromise = Promise; + const originalPromiseThen = Promise.prototype.then; + const originalPromiseReject = Promise.reject.bind(originalPromise); + // https://webidl.spec.whatwg.org/#a-new-promise + function newPromise(executor) { + return new originalPromise(executor); + } + // https://webidl.spec.whatwg.org/#a-promise-resolved-with + function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); + } + // https://webidl.spec.whatwg.org/#a-promise-rejected-with + function promiseRejectedWith(reason) { + return originalPromiseReject(reason); + } + function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); + } + // Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned + // from that handler. To prevent this, return null instead of void from all handlers. + // http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it + function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); + } + function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); + } + function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); + } + function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); + } + function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); + } + let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); + }; + function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); + } + function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } + } + + // Original from Chromium + // https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js + const QUEUE_MAX_ARRAY_SIZE = 16384; + /** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ + class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } + } + + const AbortSteps = Symbol('[[AbortSteps]]'); + const ErrorSteps = Symbol('[[ErrorSteps]]'); + const CancelSteps = Symbol('[[CancelSteps]]'); + const PullSteps = Symbol('[[PullSteps]]'); + const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + + function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } + } + // A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state + // check. + function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); + } + function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; + } + // Helper functions for the readers. + function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); + } + function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); + } + function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); + } + function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); + } + function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill + const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); + }; + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill + const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); + }; + + // https://heycam.github.io/webidl/#idl-dictionaries + function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; + } + function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } + } + // https://heycam.github.io/webidl/#idl-callback-functions + function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } + } + // https://heycam.github.io/webidl/#idl-object + function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } + } + function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } + } + function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } + } + // https://heycam.github.io/webidl/#idl-unrestricted-double + function convertUnrestrictedDouble(value) { + return Number(value); + } + function censorNegativeZero(x) { + return x === 0 ? 0 : x; + } + function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); + } + // https://heycam.github.io/webidl/#idl-unsigned-long-long + function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; + } + + function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); + } + function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; + } + function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; + } + /** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); + setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; + } + function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } + } + function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); + } + + /// + /* eslint-disable @typescript-eslint/no-empty-function */ + const AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () { }).prototype); + + /// + class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } + } + const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } + }; + Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); + // Abstract operations for the ReadableStream. + function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; + } + function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } + } + // Helper functions for the ReadableStream. + function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill + const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; + }; + + var _a, _b, _c; + function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); + } + function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); + } + let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); + }; + let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); + }; + function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; + } + function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; + } + function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (async function* () { + return yield* syncIterable; + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; + } + // Aligns with core-js/modules/es.symbol.async-iterator.js + const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; + function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; + } + function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; + } + function IteratorComplete(iterResult) { + return Boolean(iterResult.done); + } + function IteratorValue(iterResult) { + return iterResult.value; + } + + function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; + } + function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); + } + + function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; + } + function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; + } + function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; + } + function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; + } + + function isDataViewConstructor(ctor) { + return ctor === DataView; + } + function isDataView(view) { + return isDataViewConstructor(view.constructor); + } + function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; + } + + /** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ + class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } + } + Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); + setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); + } + /** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ + class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } + } + Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableByteStreamController.prototype.close, 'close'); + setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableByteStreamController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); + } + // Abstract operations for the ReadableByteStreamController. + function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; + } + function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; + } + function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); + } + function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); + } + function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } + } + function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); + } + function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; + } + function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); + } + function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; + } + function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; + } + function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + } + function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; + } + function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } + } + function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; + } + function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + // A client of ReadableByteStreamController may use these functions directly to bypass state check. + function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + } + function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; + } + function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); + } + function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); + } + function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); + } + function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); + } + function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; + } + // Helper functions for the ReadableStreamBYOBRequest. + function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); + } + // Helper functions for the ReadableByteStreamController. + function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); + } + + function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; + } + function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; + } + function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); + } + function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; + } + function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; + } + /** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); + setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; + } + function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } + } + function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamBYOBReader. + function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); + } + + function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; + } + function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; + } + + function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; + } + function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); + } + + function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; + } + function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); + } + function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + + function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } + } + + function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } + } + const supportsAbortController = typeof AbortController === 'function'; + /** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ + function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; + } + + /** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ + class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } + } + Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(WritableStream.prototype.abort, 'abort'); + setFunctionName(WritableStream.prototype.close, 'close'); + setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); + } + // Abstract operations for the WritableStream. + function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); + } + // Throws if and only if startAlgorithm throws. + function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; + } + function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; + } + function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; + } + function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; + } + function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; + } + // WritableStream API exposed for controllers. + function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; + } + function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); + } + function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } + } + function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); + } + function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; + } + function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); + } + function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } + } + function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); + } + // TODO(ricea): Fix alphabetical order. + function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; + } + function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); + } + function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } + } + function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; + } + /** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ + class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } + } + Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } + }); + setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); + setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); + setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); + setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); + } + // Abstract operations for the WritableStreamDefaultWriter. + function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; + } + // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. + function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); + } + function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); + } + function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); + } + function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); + } + function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; + } + function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; + } + const closeSentinel = {}; + /** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ + class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } + } + Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); + } + // Abstract operations implementing interface required by the WritableStream. + function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; + } + function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); + } + function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + } + // ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. + function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } + } + function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; + } + function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + // Abstract operations for the WritableStreamDefaultController. + function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } + } + function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } + } + function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; + } + // A client of WritableStreamDefaultController may use these functions directly to bypass state check. + function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); + } + // Helper functions for the WritableStream. + function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); + } + // Helper functions for the WritableStreamDefaultController. + function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); + } + // Helper functions for the WritableStreamDefaultWriter. + function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); + } + function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); + } + function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); + } + function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); + } + function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); + } + function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; + } + function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; + } + function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; + } + function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); + } + function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); + } + function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; + } + function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); + } + function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; + } + + /// + function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; + } + const globals = getGlobals(); + + /// + function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } + } + /** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ + function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; + } + /** + * Support: + * - All platforms + */ + function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; + } + // eslint-disable-next-line @typescript-eslint/no-redeclare + const DOMException = getFromGlobal() || createPolyfill(); + + function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); + } + + /** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ + class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } + } + Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); + setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); + } + // Abstract operations for the ReadableStreamDefaultController. + function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; + } + function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); + } + function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + // A client of ReadableStreamDefaultController may use these functions directly to bypass state check. + function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + } + function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + // This is used in the implementation of TransformStream. + function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; + } + function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; + } + function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); + } + function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + } + // Helper functions for the ReadableStreamDefaultController. + function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); + } + + function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); + } + function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; + } + function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; + } + + function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; + } + + function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); + } + function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + + function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; + } + function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; + } + + function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; + } + + function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; + } + function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } + } + + function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; + } + + /** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ + class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } + } + Object.defineProperties(ReadableStream, { + from: { enumerable: true } + }); + Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(ReadableStream.from, 'from'); + setFunctionName(ReadableStream.prototype.cancel, 'cancel'); + setFunctionName(ReadableStream.prototype.getReader, 'getReader'); + setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); + setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); + setFunctionName(ReadableStream.prototype.tee, 'tee'); + setFunctionName(ReadableStream.prototype.values, 'values'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); + } + Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true + }); + // Abstract operations for the ReadableStream. + // Throws if and only if startAlgorithm throws. + function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + // Throws if and only if startAlgorithm throws. + function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; + } + function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; + } + function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; + } + function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; + } + // ReadableStream API exposed for controllers. + function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); + } + function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } + } + function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + } + // Helper functions for the ReadableStream. + function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); + } + + function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; + } + + // The size function must not have a prototype property nor be a constructor + const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; + }; + setFunctionName(byteLengthSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ + class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } + } + Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); + } + // Helper functions for the ByteLengthQueuingStrategy. + function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); + } + function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; + } + + // The size function must not have a prototype property nor be a constructor + const countSizeFunction = () => { + return 1; + }; + setFunctionName(countSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of chunks. + * + * @public + */ + class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } + } + Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); + } + // Helper functions for the CountQueuingStrategy. + function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); + } + function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; + } + + function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; + } + function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + + // Class TransformStream + /** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ + class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } + } + Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); + } + function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; + } + function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; + } + // This is a no-op if both sides are already errored. + function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); + } + function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); + } + function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } + } + function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; + } + // Class TransformStreamDefaultController + /** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ + class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } + } + Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); + setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); + } + // Transform Stream Default Controller Abstract Operations + function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; + } + function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); + } + function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } + } + function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); + } + function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); + } + function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); + } + // TransformStreamDefaultSink Algorithms + function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + } + function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // TransformStreamDefaultSource Algorithms + function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; + } + function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // Helper functions for the TransformStreamDefaultController. + function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); + } + function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + // Helper functions for the TransformStream. + function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); + } + + const exports$1 = { + ReadableStream, + ReadableStreamDefaultController, + ReadableByteStreamController, + ReadableStreamBYOBRequest, + ReadableStreamDefaultReader, + ReadableStreamBYOBReader, + WritableStream, + WritableStreamDefaultController, + WritableStreamDefaultWriter, + ByteLengthQueuingStrategy, + CountQueuingStrategy, + TransformStream, + TransformStreamDefaultController + }; + // Add classes to global scope + if (typeof globals !== 'undefined') { + for (const prop in exports$1) { + if (Object.prototype.hasOwnProperty.call(exports$1, prop)) { + Object.defineProperty(globals, prop, { + value: exports$1[prop], + writable: true, + configurable: true + }); + } + } + } + + exports.ByteLengthQueuingStrategy = ByteLengthQueuingStrategy; + exports.CountQueuingStrategy = CountQueuingStrategy; + exports.ReadableByteStreamController = ReadableByteStreamController; + exports.ReadableStream = ReadableStream; + exports.ReadableStreamBYOBReader = ReadableStreamBYOBReader; + exports.ReadableStreamBYOBRequest = ReadableStreamBYOBRequest; + exports.ReadableStreamDefaultController = ReadableStreamDefaultController; + exports.ReadableStreamDefaultReader = ReadableStreamDefaultReader; + exports.TransformStream = TransformStream; + exports.TransformStreamDefaultController = TransformStreamDefaultController; + exports.WritableStream = WritableStream; + exports.WritableStreamDefaultController = WritableStreamDefaultController; + exports.WritableStreamDefaultWriter = WritableStreamDefaultWriter; + +})); +//# sourceMappingURL=polyfill.es2018.js.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es2018.js.map b/node_modules/web-streams-polyfill/dist/polyfill.es2018.js.map new file mode 100644 index 0000000..cffe625 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es2018.js.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.es2018.js","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/target/es2018/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/ecmascript.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/// \n\n/* eslint-disable @typescript-eslint/no-empty-function */\nexport const AsyncIteratorPrototype: AsyncIterable =\n Object.getPrototypeOf(Object.getPrototypeOf(async function* (): AsyncIterableIterator {}).prototype);\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. 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It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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Symbol.toStringTag&&Object.defineProperty(ReadableStreamDefaultReader.prototype,Symbol.toStringTag,{value:"ReadableStreamDefaultReader",configurable:!0});const ee=Object.getPrototypeOf(Object.getPrototypeOf((async function*(){})).prototype);class te{constructor(e,t){this._ongoingPromise=void 0,this._isFinished=!1,this._reader=e,this._preventCancel=t}next(){const e=()=>this._nextSteps();return this._ongoingPromise=this._ongoingPromise?h(this._ongoingPromise,e,e):e(),this._ongoingPromise}return(e){const t=()=>this._returnSteps(e);return this._ongoingPromise?h(this._ongoingPromise,t,t):t()}_nextSteps(){if(this._isFinished)return Promise.resolve({value:void 0,done:!0});const e=this._reader;let t,r;const o=s(((e,o)=>{t=e,r=o}));return J(e,{_chunkSteps:e=>{this._ongoingPromise=void 0,p((()=>t({value:e,done:!1})))},_closeSteps:()=>{this._ongoingPromise=void 0,this._isFinished=!0,E(e),t({value:void 0,done:!0})},_errorSteps:t=>{this._ongoingPromise=void 0,this._isFinished=!0,E(e),r(t)}}),o}_returnSteps(e){if(this._isFinished)return Promise.resolve({value:e,done:!0});this._isFinished=!0;const t=this._reader;if(!this._preventCancel){const r=q(t,e);return E(t),h(r,(()=>({value:e,done:!0})))}return E(t),u({value:e,done:!0})}}const re={next(){return oe(this)?this._asyncIteratorImpl.next():c(ne("next"))},return(e){return oe(this)?this._asyncIteratorImpl.return(e):c(ne("return"))}};function oe(e){if(!r(e))return!1;if(!Object.prototype.hasOwnProperty.call(e,"_asyncIteratorImpl"))return!1;try{return e._asyncIteratorImpl instanceof te}catch(e){return!1}}function ne(e){return new TypeError(`ReadableStreamAsyncIterator.${e} can only be used on a ReadableSteamAsyncIterator`)}Object.setPrototypeOf(re,ee);const ae=Number.isNaN||function(e){return e!=e};var ie,le,se;function ue(e){return e.slice()}function ce(e,t,r,o,n){new Uint8Array(e).set(new Uint8Array(r,o,n),t)}let de=e=>(de="function"==typeof e.transfer?e=>e.transfer():"function"==typeof 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have non-zero byteLength");if(this._closeRequested)throw new TypeError("stream is closed or draining");const t=this._controlledReadableByteStream._state;if("readable"!==t)throw new TypeError(`The stream (in ${t} state) is not in the readable state and cannot be enqueued to`);Me(this,e)}error(e=void 0){if(!we(this))throw Xe("error");Ye(this,e)}[R](e){Ce(this),ge(this);const t=this._cancelAlgorithm(e);return Ie(this),t}[T](e){const t=this._controlledReadableByteStream;if(this._queueTotalSize>0)return void Qe(this,e);const r=this._autoAllocateChunkSize;if(void 0!==r){let t;try{t=new ArrayBuffer(r)}catch(t){return void e._errorSteps(t)}const o={buffer:t,bufferByteLength:r,byteOffset:0,byteLength:r,bytesFilled:0,minimumFill:1,elementSize:1,viewConstructor:Uint8Array,readerType:"default"};this._pendingPullIntos.push(o)}H(t,e),Te(this)}[C](){if(this._pendingPullIntos.length>0){const e=this._pendingPullIntos.peek();e.readerType="none",this._pendingPullIntos=new 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ke(e){0===e._queueTotalSize&&e._closeRequested?(Ie(e),Wr(e._controlledReadableByteStream)):Te(e)}function Ae(e){null!==e._byobRequest&&(e._byobRequest._associatedReadableByteStreamController=void 0,e._byobRequest._view=null,e._byobRequest=null)}function De(e){for(;e._pendingPullIntos.length>0;){if(0===e._queueTotalSize)return;const t=e._pendingPullIntos.peek();Oe(e,t)&&(Fe(e),Pe(e._controlledReadableByteStream,t))}}function ze(e,t,r,o){const n=e._controlledReadableByteStream,a=t.constructor,i=function(e){return ve(e)?1:e.BYTES_PER_ELEMENT}(a),{byteOffset:l,byteLength:s}=t,u=r*i;let c;try{c=de(t.buffer)}catch(e){return void o._errorSteps(e)}const d={buffer:c,bufferByteLength:c.byteLength,byteOffset:l,byteLength:s,bytesFilled:0,minimumFill:u,elementSize:i,viewConstructor:a,readerType:"byob"};if(e._pendingPullIntos.length>0)return e._pendingPullIntos.push(d),void Ze(n,o);if("closed"!==n._state){if(e._queueTotalSize>0){if(Oe(e,d)){const t=qe(d);return ke(e),void 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t=e._controlledReadableByteStream;if(!e._closeRequested&&"readable"===t._state)if(e._queueTotalSize>0)e._closeRequested=!0;else{if(e._pendingPullIntos.length>0){const t=e._pendingPullIntos.peek();if(t.bytesFilled%t.elementSize!=0){const t=new TypeError("Insufficient bytes to fill elements in the given buffer");throw Ye(e,t),t}}Ie(e),Wr(t)}}function Me(e,t){const r=e._controlledReadableByteStream;if(e._closeRequested||"readable"!==r._state)return;const{buffer:o,byteOffset:n,byteLength:a}=t;if(fe(o))throw new TypeError("chunk's buffer is detached and so cannot be enqueued");const i=de(o);if(e._pendingPullIntos.length>0){const t=e._pendingPullIntos.peek();if(fe(t.buffer))throw new TypeError("The BYOB request's buffer has been detached and so cannot be filled with an enqueued chunk");Ae(e),t.buffer=de(t.buffer),"none"===t.readerType&&Be(e,t)}if(G(r))if(function(e){const 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ReadableStreamBYOBReader{constructor(e){if(I(e,1,"ReadableStreamBYOBReader"),x(e,"First parameter"),qr(e))throw new TypeError("This stream has already been locked for exclusive reading by another reader");if(!we(e._readableStreamController))throw new TypeError("Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte source");P(this,e),this._readIntoRequests=new g}get closed(){return rt(this)?this._closedPromise:c(at("closed"))}cancel(e=void 0){return rt(this)?void 0===this._ownerReadableStream?c(W("cancel")):q(this,e):c(at("cancel"))}read(e,t={}){if(!rt(this))return c(at("read"));if(!ArrayBuffer.isView(e))return c(new TypeError("view must be an array buffer view"));if(0===e.byteLength)return c(new TypeError("view must have non-zero byteLength"));if(0===e.buffer.byteLength)return c(new TypeError("view's buffer must have non-zero byteLength"));if(fe(e.buffer))return c(new TypeError("view's buffer has been detached"));let r;try{r=function(e,t){var r;return 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mt(e,t){if(!yt(e))throw new TypeError(`${t} is not a WritableStream.`)}Object.defineProperties(ReadableStreamBYOBReader.prototype,{cancel:{enumerable:!0},read:{enumerable:!0},releaseLock:{enumerable:!0},closed:{enumerable:!0}}),n(ReadableStreamBYOBReader.prototype.cancel,"cancel"),n(ReadableStreamBYOBReader.prototype.read,"read"),n(ReadableStreamBYOBReader.prototype.releaseLock,"releaseLock"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(ReadableStreamBYOBReader.prototype,Symbol.toStringTag,{value:"ReadableStreamBYOBReader",configurable:!0});const ht="function"==typeof AbortController;class WritableStream{constructor(e={},t={}){void 0===e?e=null:F(e,"First parameter");const r=st(t,"Second parameter"),o=function(e,t){z(e,t);const r=null==e?void 0:e.abort,o=null==e?void 0:e.close,n=null==e?void 0:e.start,a=null==e?void 0:e.type,i=null==e?void 0:e.write;return{abort:void 0===r?void 0:ct(r,e,`${t} has member 'abort' that`),close:void 0===o?void 0:dt(o,e,`${t} has member 'close' that`),start:void 0===n?void 0:ft(n,e,`${t} has member 'start' that`),write:void 0===i?void 0:bt(i,e,`${t} has member 'write' that`),type:a}}(e,"First parameter");pt(this);if(void 0!==o.type)throw new RangeError("Invalid type is specified");const n=lt(r);!function(e,t,r,o){const n=Object.create(WritableStreamDefaultController.prototype);let a,i,l,s;a=void 0!==t.start?()=>t.start(n):()=>{};i=void 0!==t.write?e=>t.write(e,n):()=>u(void 0);l=void 0!==t.close?()=>t.close():()=>u(void 0);s=void 0!==t.abort?e=>t.abort(e):()=>u(void 0);zt(e,n,a,i,l,s,r,o)}(this,o,it(r,1),n)}get locked(){if(!yt(this))throw Qt("locked");return St(this)}abort(e=void 0){return yt(this)?St(this)?c(new TypeError("Cannot abort a stream that already has a writer")):gt(this,e):c(Qt("abort"))}close(){return yt(this)?St(this)?c(new TypeError("Cannot close a stream that already has a writer")):Ct(this)?c(new TypeError("Cannot close an already-closing stream")):vt(this):c(Qt("close"))}getWriter(){if(!yt(this))throw Qt("getWriter");return _t(this)}}function _t(e){return new WritableStreamDefaultWriter(e)}function pt(e){e._state="writable",e._storedError=void 0,e._writer=void 0,e._writableStreamController=void 0,e._writeRequests=new g,e._inFlightWriteRequest=void 0,e._closeRequest=void 0,e._inFlightCloseRequest=void 0,e._pendingAbortRequest=void 0,e._backpressure=!1}function yt(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_writableStreamController")&&e instanceof WritableStream)}function St(e){return void 0!==e._writer}function gt(e,t){var r;if("closed"===e._state||"errored"===e._state)return u(void 0);e._writableStreamController._abortReason=t,null===(r=e._writableStreamController._abortController)||void 0===r||r.abort(t);const o=e._state;if("closed"===o||"errored"===o)return u(void 0);if(void 0!==e._pendingAbortRequest)return e._pendingAbortRequest._promise;let n=!1;"erroring"===o&&(n=!0,t=void 0);const a=s(((r,o)=>{e._pendingAbortRequest={_promise:void 0,_resolve:r,_reject:o,_reason:t,_wasAlreadyErroring:n}}));return e._pendingAbortRequest._promise=a,n||Rt(e,t),a}function vt(e){const t=e._state;if("closed"===t||"errored"===t)return c(new TypeError(`The stream (in ${t} state) is not in the writable state and cannot be closed`));const r=s(((t,r)=>{const o={_resolve:t,_reject:r};e._closeRequest=o})),o=e._writer;var n;return void 0!==o&&e._backpressure&&"writable"===t&&tr(o),Se(n=e._writableStreamController,At,0),It(n),r}function wt(e,t){"writable"!==e._state?Tt(e):Rt(e,t)}function Rt(e,t){const r=e._writableStreamController;e._state="erroring",e._storedError=t;const o=e._writer;void 0!==o&&Ot(o,t),!function(e){if(void 0===e._inFlightWriteRequest&&void 0===e._inFlightCloseRequest)return!1;return!0}(e)&&r._started&&Tt(e)}function Tt(e){e._state="errored",e._writableStreamController[w]();const t=e._storedError;if(e._writeRequests.forEach((e=>{e._reject(t)})),e._writeRequests=new g,void 0===e._pendingAbortRequest)return void Pt(e);const r=e._pendingAbortRequest;if(e._pendingAbortRequest=void 0,r._wasAlreadyErroring)return r._reject(t),void Pt(e);f(e._writableStreamController[v](r._reason),(()=>(r._resolve(),Pt(e),null)),(t=>(r._reject(t),Pt(e),null)))}function Ct(e){return void 0!==e._closeRequest||void 0!==e._inFlightCloseRequest}function Pt(e){void 0!==e._closeRequest&&(e._closeRequest._reject(e._storedError),e._closeRequest=void 0);const t=e._writer;void 0!==t&&Gt(t,e._storedError)}function qt(e,t){const r=e._writer;void 0!==r&&t!==e._backpressure&&(t?function(e){Jt(e)}(r):tr(r)),e._backpressure=t}Object.defineProperties(WritableStream.prototype,{abort:{enumerable:!0},close:{enumerable:!0},getWriter:{enumerable:!0},locked:{enumerable:!0}}),n(WritableStream.prototype.abort,"abort"),n(WritableStream.prototype.close,"close"),n(WritableStream.prototype.getWriter,"getWriter"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(WritableStream.prototype,Symbol.toStringTag,{value:"WritableStream",configurable:!0});class WritableStreamDefaultWriter{constructor(e){if(I(e,1,"WritableStreamDefaultWriter"),mt(e,"First parameter"),St(e))throw new TypeError("This stream has already been locked for exclusive writing by another writer");this._ownerWritableStream=e,e._writer=this;const t=e._state;if("writable"===t)!Ct(e)&&e._backpressure?Jt(this):Zt(this),Vt(this);else if("erroring"===t)Kt(this,e._storedError),Vt(this);else if("closed"===t)Zt(this),Vt(r=this),Xt(r);else{const t=e._storedError;Kt(this,t),Ut(this,t)}var r}get closed(){return Et(this)?this._closedPromise:c(Nt("closed"))}get desiredSize(){if(!Et(this))throw Nt("desiredSize");if(void 0===this._ownerWritableStream)throw Ht("desiredSize");return function(e){const t=e._ownerWritableStream,r=t._state;if("errored"===r||"erroring"===r)return null;if("closed"===r)return 0;return Ft(t._writableStreamController)}(this)}get ready(){return Et(this)?this._readyPromise:c(Nt("ready"))}abort(e=void 0){return Et(this)?void 0===this._ownerWritableStream?c(Ht("abort")):function(e,t){return gt(e._ownerWritableStream,t)}(this,e):c(Nt("abort"))}close(){if(!Et(this))return c(Nt("close"));const e=this._ownerWritableStream;return void 0===e?c(Ht("close")):Ct(e)?c(new TypeError("Cannot close an already-closing stream")):Wt(this)}releaseLock(){if(!Et(this))throw Nt("releaseLock");void 0!==this._ownerWritableStream&&jt(this)}write(e=void 0){return Et(this)?void 0===this._ownerWritableStream?c(Ht("write to")):kt(this,e):c(Nt("write"))}}function Et(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_ownerWritableStream")&&e instanceof WritableStreamDefaultWriter)}function Wt(e){return vt(e._ownerWritableStream)}function Bt(e,t){"pending"===e._closedPromiseState?Gt(e,t):function(e,t){Ut(e,t)}(e,t)}function Ot(e,t){"pending"===e._readyPromiseState?er(e,t):function(e,t){Kt(e,t)}(e,t)}function jt(e){const t=e._ownerWritableStream,r=new TypeError("Writer was released and can no longer be used to monitor the stream's closedness");Ot(e,r),Bt(e,r),t._writer=void 0,e._ownerWritableStream=void 0}function kt(e,t){const r=e._ownerWritableStream,o=r._writableStreamController,n=function(e,t){try{return e._strategySizeAlgorithm(t)}catch(t){return $t(e,t),1}}(o,t);if(r!==e._ownerWritableStream)return c(Ht("write to"));const a=r._state;if("errored"===a)return c(r._storedError);if(Ct(r)||"closed"===a)return c(new TypeError("The stream is closing or closed and cannot be written to"));if("erroring"===a)return c(r._storedError);const i=function(e){return s(((t,r)=>{const o={_resolve:t,_reject:r};e._writeRequests.push(o)}))}(r);return function(e,t,r){try{Se(e,t,r)}catch(t){return void $t(e,t)}const o=e._controlledWritableStream;if(!Ct(o)&&"writable"===o._state){qt(o,Mt(e))}It(e)}(o,t,n),i}Object.defineProperties(WritableStreamDefaultWriter.prototype,{abort:{enumerable:!0},close:{enumerable:!0},releaseLock:{enumerable:!0},write:{enumerable:!0},closed:{enumerable:!0},desiredSize:{enumerable:!0},ready:{enumerable:!0}}),n(WritableStreamDefaultWriter.prototype.abort,"abort"),n(WritableStreamDefaultWriter.prototype.close,"close"),n(WritableStreamDefaultWriter.prototype.releaseLock,"releaseLock"),n(WritableStreamDefaultWriter.prototype.write,"write"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(WritableStreamDefaultWriter.prototype,Symbol.toStringTag,{value:"WritableStreamDefaultWriter",configurable:!0});const At={};class WritableStreamDefaultController{constructor(){throw new TypeError("Illegal constructor")}get abortReason(){if(!Dt(this))throw xt("abortReason");return this._abortReason}get signal(){if(!Dt(this))throw xt("signal");if(void 0===this._abortController)throw new TypeError("WritableStreamDefaultController.prototype.signal is not supported");return this._abortController.signal}error(e=void 0){if(!Dt(this))throw xt("error");"writable"===this._controlledWritableStream._state&&Yt(this,e)}[v](e){const t=this._abortAlgorithm(e);return Lt(this),t}[w](){ge(this)}}function Dt(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_controlledWritableStream")&&e instanceof WritableStreamDefaultController)}function zt(e,t,r,o,n,a,i,l){t._controlledWritableStream=e,e._writableStreamController=t,t._queue=void 0,t._queueTotalSize=void 0,ge(t),t._abortReason=void 0,t._abortController=function(){if(ht)return new AbortController}(),t._started=!1,t._strategySizeAlgorithm=l,t._strategyHWM=i,t._writeAlgorithm=o,t._closeAlgorithm=n,t._abortAlgorithm=a;const s=Mt(t);qt(e,s);f(u(r()),(()=>(t._started=!0,It(t),null)),(r=>(t._started=!0,wt(e,r),null)))}function Lt(e){e._writeAlgorithm=void 0,e._closeAlgorithm=void 0,e._abortAlgorithm=void 0,e._strategySizeAlgorithm=void 0}function Ft(e){return e._strategyHWM-e._queueTotalSize}function It(e){const t=e._controlledWritableStream;if(!e._started)return;if(void 0!==t._inFlightWriteRequest)return;if("erroring"===t._state)return void Tt(t);if(0===e._queue.length)return;const r=e._queue.peek().value;r===At?function(e){const t=e._controlledWritableStream;(function(e){e._inFlightCloseRequest=e._closeRequest,e._closeRequest=void 0})(t),ye(e);const r=e._closeAlgorithm();Lt(e),f(r,(()=>(function(e){e._inFlightCloseRequest._resolve(void 0),e._inFlightCloseRequest=void 0,"erroring"===e._state&&(e._storedError=void 0,void 0!==e._pendingAbortRequest&&(e._pendingAbortRequest._resolve(),e._pendingAbortRequest=void 0)),e._state="closed";const t=e._writer;void 0!==t&&Xt(t)}(t),null)),(e=>(function(e,t){e._inFlightCloseRequest._reject(t),e._inFlightCloseRequest=void 0,void 0!==e._pendingAbortRequest&&(e._pendingAbortRequest._reject(t),e._pendingAbortRequest=void 0),wt(e,t)}(t,e),null)))}(e):function(e,t){const r=e._controlledWritableStream;!function(e){e._inFlightWriteRequest=e._writeRequests.shift()}(r);const o=e._writeAlgorithm(t);f(o,(()=>{!function(e){e._inFlightWriteRequest._resolve(void 0),e._inFlightWriteRequest=void 0}(r);const t=r._state;if(ye(e),!Ct(r)&&"writable"===t){const t=Mt(e);qt(r,t)}return It(e),null}),(t=>("writable"===r._state&&Lt(e),function(e,t){e._inFlightWriteRequest._reject(t),e._inFlightWriteRequest=void 0,wt(e,t)}(r,t),null)))}(e,r)}function $t(e,t){"writable"===e._controlledWritableStream._state&&Yt(e,t)}function Mt(e){return Ft(e)<=0}function Yt(e,t){const r=e._controlledWritableStream;Lt(e),Rt(r,t)}function Qt(e){return new TypeError(`WritableStream.prototype.${e} can only be used on a WritableStream`)}function xt(e){return new TypeError(`WritableStreamDefaultController.prototype.${e} can only be used on a WritableStreamDefaultController`)}function Nt(e){return new TypeError(`WritableStreamDefaultWriter.prototype.${e} can only be used on a WritableStreamDefaultWriter`)}function Ht(e){return new TypeError("Cannot "+e+" a stream using a released writer")}function Vt(e){e._closedPromise=s(((t,r)=>{e._closedPromise_resolve=t,e._closedPromise_reject=r,e._closedPromiseState="pending"}))}function Ut(e,t){Vt(e),Gt(e,t)}function Gt(e,t){void 0!==e._closedPromise_reject&&(_(e._closedPromise),e._closedPromise_reject(t),e._closedPromise_resolve=void 0,e._closedPromise_reject=void 0,e._closedPromiseState="rejected")}function Xt(e){void 0!==e._closedPromise_resolve&&(e._closedPromise_resolve(void 0),e._closedPromise_resolve=void 0,e._closedPromise_reject=void 0,e._closedPromiseState="resolved")}function Jt(e){e._readyPromise=s(((t,r)=>{e._readyPromise_resolve=t,e._readyPromise_reject=r})),e._readyPromiseState="pending"}function Kt(e,t){Jt(e),er(e,t)}function Zt(e){Jt(e),tr(e)}function er(e,t){void 0!==e._readyPromise_reject&&(_(e._readyPromise),e._readyPromise_reject(t),e._readyPromise_resolve=void 0,e._readyPromise_reject=void 0,e._readyPromiseState="rejected")}function tr(e){void 0!==e._readyPromise_resolve&&(e._readyPromise_resolve(void 0),e._readyPromise_resolve=void 0,e._readyPromise_reject=void 0,e._readyPromiseState="fulfilled")}Object.defineProperties(WritableStreamDefaultController.prototype,{abortReason:{enumerable:!0},signal:{enumerable:!0},error:{enumerable:!0}}),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(WritableStreamDefaultController.prototype,Symbol.toStringTag,{value:"WritableStreamDefaultController",configurable:!0});const rr="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof self?self:"undefined"!=typeof global?global:void 0;const or=function(){const e=null==rr?void 0:rr.DOMException;return function(e){if("function"!=typeof e&&"object"!=typeof e)return!1;if("DOMException"!==e.name)return!1;try{return new e,!0}catch(e){return!1}}(e)?e:void 0}()||function(){const e=function(e,t){this.message=e||"",this.name=t||"Error",Error.captureStackTrace&&Error.captureStackTrace(this,this.constructor)};return n(e,"DOMException"),e.prototype=Object.create(Error.prototype),Object.defineProperty(e.prototype,"constructor",{value:e,writable:!0,configurable:!0}),e}();function nr(e,r,o,n,a,i){const l=N(e),h=_t(r);e._disturbed=!0;let p=!1,y=u(void 0);return s(((S,g)=>{let v;if(void 0!==i){if(v=()=>{const t=void 0!==i.reason?i.reason:new or("Aborted","AbortError"),o=[];n||o.push((()=>"writable"===r._state?gt(r,t):u(void 0))),a||o.push((()=>"readable"===e._state?Er(e,t):u(void 0))),q((()=>Promise.all(o.map((e=>e())))),!0,t)},i.aborted)return void v();i.addEventListener("abort",v)}var w,R,T;if(P(e,l._closedPromise,(e=>(n?W(!0,e):q((()=>gt(r,e)),!0,e),null))),P(r,h._closedPromise,(t=>(a?W(!0,t):q((()=>Er(e,t)),!0,t),null))),w=e,R=l._closedPromise,T=()=>(o?W():q((()=>function(e){const t=e._ownerWritableStream,r=t._state;return Ct(t)||"closed"===r?u(void 0):"errored"===r?c(t._storedError):Wt(e)}(h))),null),"closed"===w._state?T():b(R,T),Ct(r)||"closed"===r._state){const t=new TypeError("the destination writable stream closed before all data could be piped to it");a?W(!0,t):q((()=>Er(e,t)),!0,t)}function C(){const e=y;return d(y,(()=>e!==y?C():void 0))}function P(e,t,r){"errored"===e._state?r(e._storedError):m(t,r)}function q(e,t,o){function n(){return f(e(),(()=>B(t,o)),(e=>B(!0,e))),null}p||(p=!0,"writable"!==r._state||Ct(r)?n():b(C(),n))}function W(e,t){p||(p=!0,"writable"!==r._state||Ct(r)?B(e,t):b(C(),(()=>B(e,t))))}function B(e,t){return jt(h),E(l),void 0!==i&&i.removeEventListener("abort",v),e?g(t):S(void 0),null}_(s(((e,r)=>{!function o(n){n?e():d(p?u(!0):d(h._readyPromise,(()=>s(((e,r)=>{J(l,{_chunkSteps:r=>{y=d(kt(h,r),void 0,t),e(!1)},_closeSteps:()=>e(!0),_errorSteps:r})})))),o,r)}(!1)})))}))}class ReadableStreamDefaultController{constructor(){throw new TypeError("Illegal constructor")}get desiredSize(){if(!ar(this))throw hr("desiredSize");return fr(this)}close(){if(!ar(this))throw hr("close");if(!br(this))throw new TypeError("The stream is not in a state that permits close");ur(this)}enqueue(e=void 0){if(!ar(this))throw hr("enqueue");if(!br(this))throw new TypeError("The stream is not in a state that permits enqueue");return cr(this,e)}error(e=void 0){if(!ar(this))throw hr("error");dr(this,e)}[R](e){ge(this);const t=this._cancelAlgorithm(e);return sr(this),t}[T](e){const t=this._controlledReadableStream;if(this._queue.length>0){const r=ye(this);this._closeRequested&&0===this._queue.length?(sr(this),Wr(t)):ir(this),e._chunkSteps(r)}else H(t,e),ir(this)}[C](){}}function ar(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_controlledReadableStream")&&e instanceof ReadableStreamDefaultController)}function ir(e){if(!lr(e))return;if(e._pulling)return void(e._pullAgain=!0);e._pulling=!0;f(e._pullAlgorithm(),(()=>(e._pulling=!1,e._pullAgain&&(e._pullAgain=!1,ir(e)),null)),(t=>(dr(e,t),null)))}function lr(e){const t=e._controlledReadableStream;if(!br(e))return!1;if(!e._started)return!1;if(qr(t)&&U(t)>0)return!0;return fr(e)>0}function sr(e){e._pullAlgorithm=void 0,e._cancelAlgorithm=void 0,e._strategySizeAlgorithm=void 0}function ur(e){if(!br(e))return;const t=e._controlledReadableStream;e._closeRequested=!0,0===e._queue.length&&(sr(e),Wr(t))}function cr(e,t){if(!br(e))return;const r=e._controlledReadableStream;if(qr(r)&&U(r)>0)V(r,t,!1);else{let r;try{r=e._strategySizeAlgorithm(t)}catch(t){throw dr(e,t),t}try{Se(e,t,r)}catch(t){throw dr(e,t),t}}ir(e)}function dr(e,t){const r=e._controlledReadableStream;"readable"===r._state&&(ge(e),sr(e),Br(r,t))}function fr(e){const t=e._controlledReadableStream._state;return"errored"===t?null:"closed"===t?0:e._strategyHWM-e._queueTotalSize}function br(e){const t=e._controlledReadableStream._state;return!e._closeRequested&&"readable"===t}function mr(e,t,r,o,n,a,i){t._controlledReadableStream=e,t._queue=void 0,t._queueTotalSize=void 0,ge(t),t._started=!1,t._closeRequested=!1,t._pullAgain=!1,t._pulling=!1,t._strategySizeAlgorithm=i,t._strategyHWM=a,t._pullAlgorithm=o,t._cancelAlgorithm=n,e._readableStreamController=t;f(u(r()),(()=>(t._started=!0,ir(t),null)),(e=>(dr(t,e),null)))}function hr(e){return new TypeError(`ReadableStreamDefaultController.prototype.${e} can only be used on a ReadableStreamDefaultController`)}function _r(e,t){return we(e._readableStreamController)?function(e){let t,r,o,n,a,i=N(e),l=!1,c=!1,d=!1,f=!1,b=!1;const h=s((e=>{a=e}));function _(e){m(e._closedPromise,(t=>(e!==i||(Ye(o._readableStreamController,t),Ye(n._readableStreamController,t),f&&b||a(void 0)),null)))}function y(){rt(i)&&(E(i),i=N(e),_(i));J(i,{_chunkSteps:t=>{p((()=>{c=!1,d=!1;const r=t;let i=t;if(!f&&!b)try{i=pe(t)}catch(t){return Ye(o._readableStreamController,t),Ye(n._readableStreamController,t),void a(Er(e,t))}f||Me(o._readableStreamController,r),b||Me(n._readableStreamController,i),l=!1,c?g():d&&v()}))},_closeSteps:()=>{l=!1,f||$e(o._readableStreamController),b||$e(n._readableStreamController),o._readableStreamController._pendingPullIntos.length>0&&He(o._readableStreamController,0),n._readableStreamController._pendingPullIntos.length>0&&He(n._readableStreamController,0),f&&b||a(void 0)},_errorSteps:()=>{l=!1}})}function S(t,r){X(i)&&(E(i),i=Ke(e),_(i));const s=r?n:o,u=r?o:n;ot(i,t,1,{_chunkSteps:t=>{p((()=>{c=!1,d=!1;const o=r?b:f;if(r?f:b)o||Ve(s._readableStreamController,t);else{let r;try{r=pe(t)}catch(t){return Ye(s._readableStreamController,t),Ye(u._readableStreamController,t),void a(Er(e,t))}o||Ve(s._readableStreamController,t),Me(u._readableStreamController,r)}l=!1,c?g():d&&v()}))},_closeSteps:e=>{l=!1;const t=r?b:f,o=r?f:b;t||$e(s._readableStreamController),o||$e(u._readableStreamController),void 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Gr(r),f(n,(()=>("errored"===o._state?eo(r,o._storedError):(dr(o._readableStreamController,t),Zr(r)),null)),(e=>(dr(o._readableStreamController,e),eo(r,e),null))),r._finishPromise}(e,t)}function c(){return function(e){const t=e._transformStreamController;if(void 0!==t._finishPromise)return t._finishPromise;const r=e._readable;t._finishPromise=s(((e,r)=>{t._finishPromise_resolve=e,t._finishPromise_reject=r}));const o=t._flushAlgorithm();return Gr(t),f(o,(()=>("errored"===r._state?eo(t,r._storedError):(ur(r._readableStreamController),Zr(t)),null)),(e=>(dr(r._readableStreamController,e),eo(t,e),null))),t._finishPromise}(e)}function d(){return function(e){return Vr(e,!1),e._backpressureChangePromise}(e)}function b(t){return function(e,t){const r=e._transformStreamController;if(void 0!==r._finishPromise)return r._finishPromise;const o=e._writable;r._finishPromise=s(((e,t)=>{r._finishPromise_resolve=e,r._finishPromise_reject=t}));const n=r._cancelAlgorithm(t);return Gr(r),f(n,(()=>("errored"===o._state?eo(r,o._storedError):($t(o._writableStreamController,t),Hr(e),Zr(r)),null)),(t=>($t(o._writableStreamController,t),Hr(e),eo(r,t),null))),r._finishPromise}(e,t)}e._writable=function(e,t,r,o,n=1,a=(()=>1)){const i=Object.create(WritableStream.prototype);return pt(i),zt(i,Object.create(WritableStreamDefaultController.prototype),e,t,r,o,n,a),i}(i,l,c,u,r,o),e._readable=Rr(i,d,b,n,a),e._backpressure=void 0,e._backpressureChangePromise=void 0,e._backpressureChangePromise_resolve=void 0,Vr(e,!0),e._transformStreamController=void 0}(this,s((e=>{m=e})),d,b,i,l),function(e,t){const r=Object.create(TransformStreamDefaultController.prototype);let o,n,a;o=void 0!==t.transform?e=>t.transform(e,r):e=>{try{return Xr(r,e),u(void 0)}catch(e){return c(e)}};n=void 0!==t.flush?()=>t.flush(r):()=>u(void 0);a=void 0!==t.cancel?e=>t.cancel(e):()=>u(void 0);!function(e,t,r,o,n){t._controlledTransformStream=e,e._transformStreamController=t,t._transformAlgorithm=r,t._flushAlgorithm=o,t._cancelAlgorithm=n,t._finishPromise=void 0,t._finishPromise_resolve=void 0,t._finishPromise_reject=void 0}(e,r,o,n,a)}(this,a),void 0!==a.start?m(a.start(this._transformStreamController)):m(void 0)}get readable(){if(!Qr(this))throw to("readable");return this._readable}get writable(){if(!Qr(this))throw to("writable");return this._writable}}function Qr(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_transformStreamController")&&e instanceof TransformStream)}function xr(e,t){dr(e._readable._readableStreamController,t),Nr(e,t)}function Nr(e,t){Gr(e._transformStreamController),$t(e._writable._writableStreamController,t),Hr(e)}function Hr(e){e._backpressure&&Vr(e,!1)}function Vr(e,t){void 0!==e._backpressureChangePromise&&e._backpressureChangePromise_resolve(),e._backpressureChangePromise=s((t=>{e._backpressureChangePromise_resolve=t})),e._backpressure=t}Object.defineProperties(TransformStream.prototype,{readable:{enumerable:!0},writable:{enumerable:!0}}),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(TransformStream.prototype,Symbol.toStringTag,{value:"TransformStream",configurable:!0});class TransformStreamDefaultController{constructor(){throw new TypeError("Illegal constructor")}get desiredSize(){if(!Ur(this))throw Kr("desiredSize");return fr(this._controlledTransformStream._readable._readableStreamController)}enqueue(e=void 0){if(!Ur(this))throw Kr("enqueue");Xr(this,e)}error(e=void 0){if(!Ur(this))throw Kr("error");var t;t=e,xr(this._controlledTransformStream,t)}terminate(){if(!Ur(this))throw Kr("terminate");!function(e){const t=e._controlledTransformStream;ur(t._readable._readableStreamController);const r=new TypeError("TransformStream 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0!==e._finishPromise_reject&&(_(e._finishPromise),e._finishPromise_reject(t),e._finishPromise_resolve=void 0,e._finishPromise_reject=void 0)}function to(e){return new TypeError(`TransformStream.prototype.${e} can only be used on a TransformStream`)}Object.defineProperties(TransformStreamDefaultController.prototype,{enqueue:{enumerable:!0},error:{enumerable:!0},terminate:{enumerable:!0},desiredSize:{enumerable:!0}}),n(TransformStreamDefaultController.prototype.enqueue,"enqueue"),n(TransformStreamDefaultController.prototype.error,"error"),n(TransformStreamDefaultController.prototype.terminate,"terminate"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(TransformStreamDefaultController.prototype,Symbol.toStringTag,{value:"TransformStreamDefaultController",configurable:!0});const ro={ReadableStream:ReadableStream,ReadableStreamDefaultController:ReadableStreamDefaultController,ReadableByteStreamController:ReadableByteStreamController,ReadableStreamBYOBRequest:ReadableStreamBYOBRequest,ReadableStreamDefaultReader:ReadableStreamDefaultReader,ReadableStreamBYOBReader:ReadableStreamBYOBReader,WritableStream:WritableStream,WritableStreamDefaultController:WritableStreamDefaultController,WritableStreamDefaultWriter:WritableStreamDefaultWriter,ByteLengthQueuingStrategy:ByteLengthQueuingStrategy,CountQueuingStrategy:CountQueuingStrategy,TransformStream:TransformStream,TransformStreamDefaultController:TransformStreamDefaultController};if(void 0!==rr)for(const e in ro)Object.prototype.hasOwnProperty.call(ro,e)&&Object.defineProperty(rr,e,{value:ro[e],writable:!0,configurable:!0});e.ByteLengthQueuingStrategy=ByteLengthQueuingStrategy,e.CountQueuingStrategy=CountQueuingStrategy,e.ReadableByteStreamController=ReadableByteStreamController,e.ReadableStream=ReadableStream,e.ReadableStreamBYOBReader=ReadableStreamBYOBReader,e.ReadableStreamBYOBRequest=ReadableStreamBYOBRequest,e.ReadableStreamDefaultController=ReadableStreamDefaultController,e.ReadableStreamDefaultReader=ReadableStreamDefaultReader,e.TransformStream=TransformStream,e.TransformStreamDefaultController=TransformStreamDefaultController,e.WritableStream=WritableStream,e.WritableStreamDefaultController=WritableStreamDefaultController,e.WritableStreamDefaultWriter=WritableStreamDefaultWriter})); +//# sourceMappingURL=polyfill.es2018.min.js.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es2018.min.js.map b/node_modules/web-streams-polyfill/dist/polyfill.es2018.min.js.map new file mode 100644 index 0000000..2a68110 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es2018.min.js.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.es2018.min.js","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/target/es2018/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/ecmascript.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/validators/reader-options.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/from.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/pipe-options.ts","../src/lib/readable-stream.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/// \n\n/* eslint-disable @typescript-eslint/no-empty-function */\nexport const AsyncIteratorPrototype: AsyncIterable =\n Object.getPrototypeOf(Object.getPrototypeOf(async function* (): AsyncIterableIterator {}).prototype);\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es2018.mjs b/node_modules/web-streams-polyfill/dist/polyfill.es2018.mjs new file mode 100644 index 0000000..822ef39 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es2018.mjs @@ -0,0 +1,4745 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +function noop() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +const rethrowAssertionErrorRejection = noop; +function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } +} + +const originalPromise = Promise; +const originalPromiseThen = Promise.prototype.then; +const originalPromiseReject = Promise.reject.bind(originalPromise); +// https://webidl.spec.whatwg.org/#a-new-promise +function newPromise(executor) { + return new originalPromise(executor); +} +// https://webidl.spec.whatwg.org/#a-promise-resolved-with +function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); +} +// https://webidl.spec.whatwg.org/#a-promise-rejected-with +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned +// from that handler. To prevent this, return null instead of void from all handlers. +// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); +}; +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +const QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } +} + +const AbortSteps = Symbol('[[AbortSteps]]'); +const ErrorSteps = Symbol('[[ErrorSteps]]'); +const CancelSteps = Symbol('[[CancelSteps]]'); +const PullSteps = Symbol('[[PullSteps]]'); +const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); +setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); +} +function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); +} + +/// +/* eslint-disable @typescript-eslint/no-empty-function */ +const AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () { }).prototype); + +/// +class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } +} +const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +var _a, _b, _c; +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); +}; +let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); +}; +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} +function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; +} +function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (async function* () { + return yield* syncIterable; + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; +} +// Aligns with core-js/modules/es.symbol.async-iterator.js +const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; +function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; +} +function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; +} +function IteratorComplete(iterResult) { + return Boolean(iterResult.done); +} +function IteratorValue(iterResult) { + return iterResult.value; +} + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +function isDataViewConstructor(ctor) { + return ctor === DataView; +} +function isDataView(view) { + return isDataViewConstructor(view.constructor); +} +function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } +} +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); +setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); +} +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } +} +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableByteStreamController.prototype.close, 'close'); +setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableByteStreamController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); +} +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); +} +function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } +} +function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; +} +function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); +setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } +} +function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); +} +function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } +} + +function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} +const supportsAbortController = typeof AbortController === 'function'; +/** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ +function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } +} +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(WritableStream.prototype.abort, 'abort'); +setFunctionName(WritableStream.prototype.close, 'close'); +setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); +} +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } +} +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); +setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); +setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); +setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); +} +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +const closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } +} +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); +} +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} + +/// +function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; +} +const globals = getGlobals(); + +/// +function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } +} +/** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ +function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; +} +/** + * Support: + * - All platforms + */ +function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; +} +// eslint-disable-next-line @typescript-eslint/no-redeclare +const DOMException = getFromGlobal() || createPolyfill(); + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } +} +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); +setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); +} +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; +} + +function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); +} +function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} +function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } +} +Object.defineProperties(ReadableStream, { + from: { enumerable: true } +}); +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(ReadableStream.from, 'from'); +setFunctionName(ReadableStream.prototype.cancel, 'cancel'); +setFunctionName(ReadableStream.prototype.getReader, 'getReader'); +setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); +setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); +setFunctionName(ReadableStream.prototype.tee, 'tee'); +setFunctionName(ReadableStream.prototype.values, 'values'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); +} +Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; +}; +setFunctionName(byteLengthSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } +} +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); +} +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +const countSizeFunction = () => { + return 1; +}; +setFunctionName(countSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } +} +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); +} +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} +function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } +} +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); +} +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); +} +function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } +} +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); +setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); +} +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); +} +function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); +} + +const exports = { + ReadableStream, + ReadableStreamDefaultController, + ReadableByteStreamController, + ReadableStreamBYOBRequest, + ReadableStreamDefaultReader, + ReadableStreamBYOBReader, + WritableStream, + WritableStreamDefaultController, + WritableStreamDefaultWriter, + ByteLengthQueuingStrategy, + CountQueuingStrategy, + TransformStream, + TransformStreamDefaultController +}; +// Add classes to global scope +if (typeof globals !== 'undefined') { + for (const prop in exports) { + if (Object.prototype.hasOwnProperty.call(exports, prop)) { + Object.defineProperty(globals, prop, { + value: exports[prop], + writable: true, + configurable: true + }); + } + } +} + +export { ByteLengthQueuingStrategy, CountQueuingStrategy, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, TransformStream, TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter }; +//# sourceMappingURL=polyfill.es2018.mjs.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es2018.mjs.map b/node_modules/web-streams-polyfill/dist/polyfill.es2018.mjs.map new file mode 100644 index 0000000..3d8bc87 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es2018.mjs.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.es2018.mjs","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/target/es2018/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/ecmascript.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/// \n\n/* eslint-disable @typescript-eslint/no-empty-function */\nexport const AsyncIteratorPrototype: AsyncIterable =\n Object.getPrototypeOf(Object.getPrototypeOf(async function* (): AsyncIterableIterator {}).prototype);\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. 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It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es6.js b/node_modules/web-streams-polyfill/dist/polyfill.es6.js new file mode 100644 index 0000000..01e277e --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es6.js @@ -0,0 +1,4838 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.WebStreamsPolyfill = {})); +})(this, (function (exports) { 'use strict'; + + function noop() { + return undefined; + } + + function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + const rethrowAssertionErrorRejection = noop; + function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } + } + + const originalPromise = Promise; + const originalPromiseThen = Promise.prototype.then; + const originalPromiseReject = Promise.reject.bind(originalPromise); + // https://webidl.spec.whatwg.org/#a-new-promise + function newPromise(executor) { + return new originalPromise(executor); + } + // https://webidl.spec.whatwg.org/#a-promise-resolved-with + function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); + } + // https://webidl.spec.whatwg.org/#a-promise-rejected-with + function promiseRejectedWith(reason) { + return originalPromiseReject(reason); + } + function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); + } + // Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned + // from that handler. To prevent this, return null instead of void from all handlers. + // http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it + function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); + } + function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); + } + function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); + } + function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); + } + function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); + } + let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); + }; + function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); + } + function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } + } + + // Original from Chromium + // https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js + const QUEUE_MAX_ARRAY_SIZE = 16384; + /** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ + class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } + } + + const AbortSteps = Symbol('[[AbortSteps]]'); + const ErrorSteps = Symbol('[[ErrorSteps]]'); + const CancelSteps = Symbol('[[CancelSteps]]'); + const PullSteps = Symbol('[[PullSteps]]'); + const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + + function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } + } + // A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state + // check. + function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); + } + function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; + } + // Helper functions for the readers. + function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); + } + function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); + } + function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); + } + function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); + } + function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill + const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); + }; + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill + const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); + }; + + // https://heycam.github.io/webidl/#idl-dictionaries + function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; + } + function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } + } + // https://heycam.github.io/webidl/#idl-callback-functions + function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } + } + // https://heycam.github.io/webidl/#idl-object + function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } + } + function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } + } + function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } + } + // https://heycam.github.io/webidl/#idl-unrestricted-double + function convertUnrestrictedDouble(value) { + return Number(value); + } + function censorNegativeZero(x) { + return x === 0 ? 0 : x; + } + function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); + } + // https://heycam.github.io/webidl/#idl-unsigned-long-long + function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; + } + + function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); + } + function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; + } + function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; + } + /** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); + setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; + } + function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } + } + function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); + } + + /****************************************************************************** + Copyright (c) Microsoft Corporation. + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + PERFORMANCE OF THIS SOFTWARE. + ***************************************************************************** */ + /* global Reflect, Promise, SuppressedError, Symbol */ + + + function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); + } + + function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); + } + + function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } + } + + function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } + } + + function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } + } + + typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; + }; + + var _a, _b, _c; + function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); + } + function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); + } + let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); + }; + let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); + }; + function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; + } + function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; + } + function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (function () { + return __asyncGenerator(this, arguments, function* () { + return yield __await(yield __await(yield* __asyncDelegator(__asyncValues(syncIterable)))); + }); + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; + } + // Aligns with core-js/modules/es.symbol.async-iterator.js + const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; + function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; + } + function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; + } + function IteratorComplete(iterResult) { + return Boolean(iterResult.done); + } + function IteratorValue(iterResult) { + return iterResult.value; + } + + /// + // We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. + const AsyncIteratorPrototype = { + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + [SymbolAsyncIterator]() { + return this; + } + }; + Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + + /// + class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } + } + const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } + }; + Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); + // Abstract operations for the ReadableStream. + function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; + } + function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } + } + // Helper functions for the ReadableStream. + function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill + const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; + }; + + function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; + } + function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); + } + + function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; + } + function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; + } + function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; + } + function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; + } + + function isDataViewConstructor(ctor) { + return ctor === DataView; + } + function isDataView(view) { + return isDataViewConstructor(view.constructor); + } + function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; + } + + /** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ + class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } + } + Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); + setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); + } + /** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ + class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } + } + Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableByteStreamController.prototype.close, 'close'); + setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableByteStreamController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); + } + // Abstract operations for the ReadableByteStreamController. + function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; + } + function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; + } + function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); + } + function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); + } + function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } + } + function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); + } + function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; + } + function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); + } + function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; + } + function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; + } + function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + } + function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; + } + function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } + } + function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; + } + function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + // A client of ReadableByteStreamController may use these functions directly to bypass state check. + function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + } + function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; + } + function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); + } + function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); + } + function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); + } + function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); + } + function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; + } + // Helper functions for the ReadableStreamBYOBRequest. + function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); + } + // Helper functions for the ReadableByteStreamController. + function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); + } + + function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; + } + function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; + } + function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); + } + function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; + } + function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; + } + /** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); + setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; + } + function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } + } + function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamBYOBReader. + function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); + } + + function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; + } + function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; + } + + function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; + } + function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); + } + + function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; + } + function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); + } + function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + + function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } + } + + function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } + } + const supportsAbortController = typeof AbortController === 'function'; + /** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ + function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; + } + + /** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ + class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } + } + Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(WritableStream.prototype.abort, 'abort'); + setFunctionName(WritableStream.prototype.close, 'close'); + setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); + } + // Abstract operations for the WritableStream. + function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); + } + // Throws if and only if startAlgorithm throws. + function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; + } + function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; + } + function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; + } + function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; + } + function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; + } + // WritableStream API exposed for controllers. + function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; + } + function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); + } + function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } + } + function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); + } + function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; + } + function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); + } + function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } + } + function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); + } + // TODO(ricea): Fix alphabetical order. + function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; + } + function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); + } + function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } + } + function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; + } + /** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ + class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } + } + Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } + }); + setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); + setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); + setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); + setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); + } + // Abstract operations for the WritableStreamDefaultWriter. + function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; + } + // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. + function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); + } + function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); + } + function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); + } + function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); + } + function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; + } + function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; + } + const closeSentinel = {}; + /** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ + class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } + } + Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); + } + // Abstract operations implementing interface required by the WritableStream. + function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; + } + function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); + } + function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + } + // ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. + function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } + } + function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; + } + function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + // Abstract operations for the WritableStreamDefaultController. + function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } + } + function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } + } + function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; + } + // A client of WritableStreamDefaultController may use these functions directly to bypass state check. + function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); + } + // Helper functions for the WritableStream. + function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); + } + // Helper functions for the WritableStreamDefaultController. + function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); + } + // Helper functions for the WritableStreamDefaultWriter. + function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); + } + function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); + } + function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); + } + function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); + } + function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); + } + function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; + } + function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; + } + function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; + } + function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); + } + function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); + } + function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; + } + function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); + } + function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; + } + + /// + function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; + } + const globals = getGlobals(); + + /// + function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } + } + /** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ + function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; + } + /** + * Support: + * - All platforms + */ + function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; + } + // eslint-disable-next-line @typescript-eslint/no-redeclare + const DOMException = getFromGlobal() || createPolyfill(); + + function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); + } + + /** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ + class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } + } + Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); + setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); + } + // Abstract operations for the ReadableStreamDefaultController. + function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; + } + function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); + } + function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + // A client of ReadableStreamDefaultController may use these functions directly to bypass state check. + function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + } + function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + // This is used in the implementation of TransformStream. + function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; + } + function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; + } + function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); + } + function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + } + // Helper functions for the ReadableStreamDefaultController. + function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); + } + + function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); + } + function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; + } + function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; + } + + function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; + } + + function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); + } + function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + + function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; + } + function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; + } + + function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; + } + + function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; + } + function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } + } + + function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; + } + + /** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ + class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } + } + Object.defineProperties(ReadableStream, { + from: { enumerable: true } + }); + Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(ReadableStream.from, 'from'); + setFunctionName(ReadableStream.prototype.cancel, 'cancel'); + setFunctionName(ReadableStream.prototype.getReader, 'getReader'); + setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); + setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); + setFunctionName(ReadableStream.prototype.tee, 'tee'); + setFunctionName(ReadableStream.prototype.values, 'values'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); + } + Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true + }); + // Abstract operations for the ReadableStream. + // Throws if and only if startAlgorithm throws. + function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + // Throws if and only if startAlgorithm throws. + function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; + } + function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; + } + function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; + } + function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; + } + // ReadableStream API exposed for controllers. + function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); + } + function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } + } + function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + } + // Helper functions for the ReadableStream. + function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); + } + + function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; + } + + // The size function must not have a prototype property nor be a constructor + const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; + }; + setFunctionName(byteLengthSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ + class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } + } + Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); + } + // Helper functions for the ByteLengthQueuingStrategy. + function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); + } + function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; + } + + // The size function must not have a prototype property nor be a constructor + const countSizeFunction = () => { + return 1; + }; + setFunctionName(countSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of chunks. + * + * @public + */ + class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } + } + Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); + } + // Helper functions for the CountQueuingStrategy. + function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); + } + function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; + } + + function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; + } + function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + + // Class TransformStream + /** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ + class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } + } + Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); + } + function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; + } + function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; + } + // This is a no-op if both sides are already errored. + function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); + } + function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); + } + function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } + } + function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; + } + // Class TransformStreamDefaultController + /** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ + class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } + } + Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); + setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); + } + // Transform Stream Default Controller Abstract Operations + function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; + } + function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); + } + function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } + } + function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); + } + function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); + } + function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); + } + // TransformStreamDefaultSink Algorithms + function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + } + function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // TransformStreamDefaultSource Algorithms + function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; + } + function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // Helper functions for the TransformStreamDefaultController. + function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); + } + function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + // Helper functions for the TransformStream. + function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); + } + + const exports$1 = { + ReadableStream, + ReadableStreamDefaultController, + ReadableByteStreamController, + ReadableStreamBYOBRequest, + ReadableStreamDefaultReader, + ReadableStreamBYOBReader, + WritableStream, + WritableStreamDefaultController, + WritableStreamDefaultWriter, + ByteLengthQueuingStrategy, + CountQueuingStrategy, + TransformStream, + TransformStreamDefaultController + }; + // Add classes to global scope + if (typeof globals !== 'undefined') { + for (const prop in exports$1) { + if (Object.prototype.hasOwnProperty.call(exports$1, prop)) { + Object.defineProperty(globals, prop, { + value: exports$1[prop], + writable: true, + configurable: true + }); + } + } + } + + exports.ByteLengthQueuingStrategy = ByteLengthQueuingStrategy; + exports.CountQueuingStrategy = CountQueuingStrategy; + exports.ReadableByteStreamController = ReadableByteStreamController; + exports.ReadableStream = ReadableStream; + exports.ReadableStreamBYOBReader = ReadableStreamBYOBReader; + exports.ReadableStreamBYOBRequest = ReadableStreamBYOBRequest; + exports.ReadableStreamDefaultController = ReadableStreamDefaultController; + exports.ReadableStreamDefaultReader = ReadableStreamDefaultReader; + exports.TransformStream = TransformStream; + exports.TransformStreamDefaultController = TransformStreamDefaultController; + exports.WritableStream = WritableStream; + exports.WritableStreamDefaultController = WritableStreamDefaultController; + exports.WritableStreamDefaultWriter = WritableStreamDefaultWriter; + +})); +//# sourceMappingURL=polyfill.es6.js.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es6.js.map b/node_modules/web-streams-polyfill/dist/polyfill.es6.js.map new file mode 100644 index 0000000..1f20a0a --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es6.js.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.es6.js","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../node_modules/tslib/tslib.es6.js","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? 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(function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof globals !== 'undefined') {\n for (const prop in exports) {\n if (Object.prototype.hasOwnProperty.call(exports, prop)) {\n Object.defineProperty(globals, prop, {\n value: exports[prop as (keyof typeof exports)],\n writable: true,\n configurable: true\n });\n }\n 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RangeError("options.min must be less than or equal to view's length"));if(void 0===this._ownerReadableStream)return c(W("read from"));let n,a;const i=s(((e,t)=>{n=e,a=t}));return st(this,e,o,{_chunkSteps:e=>n({value:e,done:!1}),_closeSteps:e=>n({value:e,done:!0}),_errorSteps:e=>a(e)}),i}releaseLock(){if(!lt(this))throw ct("releaseLock");void 0!==this._ownerReadableStream&&function(e){E(e);const t=new TypeError("Reader was released");ut(e,t)}(this)}}function lt(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_readIntoRequests")&&e instanceof ReadableStreamBYOBReader)}function st(e,t,r,o){const n=e._ownerReadableStream;n._disturbed=!0,"errored"===n._state?o._errorSteps(n._storedError):Me(n._readableStreamController,t,r,o)}function ut(e,t){const r=e._readIntoRequests;e._readIntoRequests=new g,r.forEach((e=>{e._errorSteps(t)}))}function ct(e){return new TypeError(`ReadableStreamBYOBReader.prototype.${e} can only be used on a ReadableStreamBYOBReader`)}function dt(e,t){const{highWaterMark:r}=e;if(void 0===r)return t;if(ve(r)||r<0)throw new RangeError("Invalid highWaterMark");return r}function ft(e){const{size:t}=e;return t||(()=>1)}function bt(e,t){z(e,t);const r=null==e?void 0:e.highWaterMark,o=null==e?void 0:e.size;return{highWaterMark:void 0===r?void 0:M(r),size:void 0===o?void 0:mt(o,`${t} has member 'size' that`)}}function mt(e,t){return I(e,t),t=>M(e(t))}function ht(e,t,r){return I(e,r),r=>S(e,t,[r])}function _t(e,t,r){return I(e,r),()=>S(e,t,[])}function pt(e,t,r){return I(e,r),r=>y(e,t,[r])}function yt(e,t,r){return I(e,r),(r,o)=>S(e,t,[r,o])}function St(e,t){if(!Rt(e))throw new TypeError(`${t} is not a WritableStream.`)}Object.defineProperties(ReadableStreamBYOBReader.prototype,{cancel:{enumerable:!0},read:{enumerable:!0},releaseLock:{enumerable:!0},closed:{enumerable:!0}}),n(ReadableStreamBYOBReader.prototype.cancel,"cancel"),n(ReadableStreamBYOBReader.prototype.read,"read"),n(ReadableStreamBYOBReader.prototype.releaseLock,"releaseLock"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(ReadableStreamBYOBReader.prototype,Symbol.toStringTag,{value:"ReadableStreamBYOBReader",configurable:!0});const gt="function"==typeof AbortController;class WritableStream{constructor(e={},t={}){void 0===e?e=null:L(e,"First parameter");const r=bt(t,"Second parameter"),o=function(e,t){z(e,t);const r=null==e?void 0:e.abort,o=null==e?void 0:e.close,n=null==e?void 0:e.start,a=null==e?void 0:e.type,i=null==e?void 0:e.write;return{abort:void 0===r?void 0:ht(r,e,`${t} has member 'abort' that`),close:void 0===o?void 0:_t(o,e,`${t} has member 'close' that`),start:void 0===n?void 0:pt(n,e,`${t} has member 'start' that`),write:void 0===i?void 0:yt(i,e,`${t} has member 'write' that`),type:a}}(e,"First parameter");wt(this);if(void 0!==o.type)throw new RangeError("Invalid type is specified");const n=ft(r);!function(e,t,r,o){const n=Object.create(WritableStreamDefaultController.prototype);let a,i,l,s;a=void 0!==t.start?()=>t.start(n):()=>{};i=void 0!==t.write?e=>t.write(e,n):()=>u(void 0);l=void 0!==t.close?()=>t.close():()=>u(void 0);s=void 0!==t.abort?e=>t.abort(e):()=>u(void 0);Mt(e,n,a,i,l,s,r,o)}(this,o,dt(r,1),n)}get locked(){if(!Rt(this))throw Ut("locked");return Tt(this)}abort(e=void 0){return Rt(this)?Tt(this)?c(new TypeError("Cannot abort a stream that already has a writer")):Ct(this,e):c(Ut("abort"))}close(){return Rt(this)?Tt(this)?c(new TypeError("Cannot close a stream that already has a writer")):Bt(this)?c(new TypeError("Cannot close an already-closing stream")):Pt(this):c(Ut("close"))}getWriter(){if(!Rt(this))throw Ut("getWriter");return vt(this)}}function vt(e){return new WritableStreamDefaultWriter(e)}function wt(e){e._state="writable",e._storedError=void 0,e._writer=void 0,e._writableStreamController=void 0,e._writeRequests=new g,e._inFlightWriteRequest=void 0,e._closeRequest=void 0,e._inFlightCloseRequest=void 0,e._pendingAbortRequest=void 0,e._backpressure=!1}function Rt(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_writableStreamController")&&e instanceof WritableStream)}function Tt(e){return void 0!==e._writer}function Ct(e,t){var r;if("closed"===e._state||"errored"===e._state)return u(void 0);e._writableStreamController._abortReason=t,null===(r=e._writableStreamController._abortController)||void 0===r||r.abort(t);const o=e._state;if("closed"===o||"errored"===o)return u(void 0);if(void 0!==e._pendingAbortRequest)return e._pendingAbortRequest._promise;let n=!1;"erroring"===o&&(n=!0,t=void 0);const a=s(((r,o)=>{e._pendingAbortRequest={_promise:void 0,_resolve:r,_reject:o,_reason:t,_wasAlreadyErroring:n}}));return e._pendingAbortRequest._promise=a,n||Et(e,t),a}function Pt(e){const t=e._state;if("closed"===t||"errored"===t)return c(new TypeError(`The stream (in ${t} state) is not in the writable state and cannot be closed`));const r=s(((t,r)=>{const o={_resolve:t,_reject:r};e._closeRequest=o})),o=e._writer;var n;return void 0!==o&&e._backpressure&&"writable"===t&&ir(o),Te(n=e._writableStreamController,Ft,0),Qt(n),r}function qt(e,t){"writable"!==e._state?Wt(e):Et(e,t)}function Et(e,t){const r=e._writableStreamController;e._state="erroring",e._storedError=t;const o=e._writer;void 0!==o&&zt(o,t),!function(e){if(void 0===e._inFlightWriteRequest&&void 0===e._inFlightCloseRequest)return!1;return!0}(e)&&r._started&&Wt(e)}function Wt(e){e._state="errored",e._writableStreamController[w]();const t=e._storedError;if(e._writeRequests.forEach((e=>{e._reject(t)})),e._writeRequests=new g,void 0===e._pendingAbortRequest)return void Ot(e);const r=e._pendingAbortRequest;if(e._pendingAbortRequest=void 0,r._wasAlreadyErroring)return r._reject(t),void Ot(e);f(e._writableStreamController[v](r._reason),(()=>(r._resolve(),Ot(e),null)),(t=>(r._reject(t),Ot(e),null)))}function Bt(e){return void 0!==e._closeRequest||void 0!==e._inFlightCloseRequest}function Ot(e){void 0!==e._closeRequest&&(e._closeRequest._reject(e._storedError),e._closeRequest=void 0);const t=e._writer;void 0!==t&&er(t,e._storedError)}function jt(e,t){const r=e._writer;void 0!==r&&t!==e._backpressure&&(t?function(e){rr(e)}(r):ir(r)),e._backpressure=t}Object.defineProperties(WritableStream.prototype,{abort:{enumerable:!0},close:{enumerable:!0},getWriter:{enumerable:!0},locked:{enumerable:!0}}),n(WritableStream.prototype.abort,"abort"),n(WritableStream.prototype.close,"close"),n(WritableStream.prototype.getWriter,"getWriter"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(WritableStream.prototype,Symbol.toStringTag,{value:"WritableStream",configurable:!0});class WritableStreamDefaultWriter{constructor(e){if(F(e,1,"WritableStreamDefaultWriter"),St(e,"First parameter"),Tt(e))throw new TypeError("This stream has already been locked for exclusive writing by another writer");this._ownerWritableStream=e,e._writer=this;const t=e._state;if("writable"===t)!Bt(e)&&e._backpressure?rr(this):nr(this),Kt(this);else if("erroring"===t)or(this,e._storedError),Kt(this);else if("closed"===t)nr(this),Kt(r=this),tr(r);else{const t=e._storedError;or(this,t),Zt(this,t)}var r}get closed(){return kt(this)?this._closedPromise:c(Xt("closed"))}get desiredSize(){if(!kt(this))throw Xt("desiredSize");if(void 0===this._ownerWritableStream)throw Jt("desiredSize");return function(e){const t=e._ownerWritableStream,r=t._state;if("errored"===r||"erroring"===r)return null;if("closed"===r)return 0;return xt(t._writableStreamController)}(this)}get ready(){return kt(this)?this._readyPromise:c(Xt("ready"))}abort(e=void 0){return kt(this)?void 0===this._ownerWritableStream?c(Jt("abort")):function(e,t){return Ct(e._ownerWritableStream,t)}(this,e):c(Xt("abort"))}close(){if(!kt(this))return c(Xt("close"));const e=this._ownerWritableStream;return void 0===e?c(Jt("close")):Bt(e)?c(new TypeError("Cannot close an already-closing stream")):At(this)}releaseLock(){if(!kt(this))throw Xt("releaseLock");void 0!==this._ownerWritableStream&&It(this)}write(e=void 0){return kt(this)?void 0===this._ownerWritableStream?c(Jt("write to")):Lt(this,e):c(Xt("write"))}}function kt(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_ownerWritableStream")&&e instanceof WritableStreamDefaultWriter)}function At(e){return Pt(e._ownerWritableStream)}function Dt(e,t){"pending"===e._closedPromiseState?er(e,t):function(e,t){Zt(e,t)}(e,t)}function zt(e,t){"pending"===e._readyPromiseState?ar(e,t):function(e,t){or(e,t)}(e,t)}function It(e){const t=e._ownerWritableStream,r=new TypeError("Writer was released and can no longer be used to monitor the stream's closedness");zt(e,r),Dt(e,r),t._writer=void 0,e._ownerWritableStream=void 0}function Lt(e,t){const r=e._ownerWritableStream,o=r._writableStreamController,n=function(e,t){try{return e._strategySizeAlgorithm(t)}catch(t){return Nt(e,t),1}}(o,t);if(r!==e._ownerWritableStream)return c(Jt("write to"));const a=r._state;if("errored"===a)return c(r._storedError);if(Bt(r)||"closed"===a)return c(new TypeError("The stream is closing or closed and cannot be written to"));if("erroring"===a)return c(r._storedError);const i=function(e){return s(((t,r)=>{const o={_resolve:t,_reject:r};e._writeRequests.push(o)}))}(r);return function(e,t,r){try{Te(e,t,r)}catch(t){return void Nt(e,t)}const o=e._controlledWritableStream;if(!Bt(o)&&"writable"===o._state){jt(o,Ht(e))}Qt(e)}(o,t,n),i}Object.defineProperties(WritableStreamDefaultWriter.prototype,{abort:{enumerable:!0},close:{enumerable:!0},releaseLock:{enumerable:!0},write:{enumerable:!0},closed:{enumerable:!0},desiredSize:{enumerable:!0},ready:{enumerable:!0}}),n(WritableStreamDefaultWriter.prototype.abort,"abort"),n(WritableStreamDefaultWriter.prototype.close,"close"),n(WritableStreamDefaultWriter.prototype.releaseLock,"releaseLock"),n(WritableStreamDefaultWriter.prototype.write,"write"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(WritableStreamDefaultWriter.prototype,Symbol.toStringTag,{value:"WritableStreamDefaultWriter",configurable:!0});const Ft={};class WritableStreamDefaultController{constructor(){throw new TypeError("Illegal constructor")}get abortReason(){if(!$t(this))throw Gt("abortReason");return this._abortReason}get signal(){if(!$t(this))throw Gt("signal");if(void 0===this._abortController)throw new TypeError("WritableStreamDefaultController.prototype.signal is not supported");return this._abortController.signal}error(e=void 0){if(!$t(this))throw Gt("error");"writable"===this._controlledWritableStream._state&&Vt(this,e)}[v](e){const t=this._abortAlgorithm(e);return Yt(this),t}[w](){Ce(this)}}function $t(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_controlledWritableStream")&&e instanceof WritableStreamDefaultController)}function Mt(e,t,r,o,n,a,i,l){t._controlledWritableStream=e,e._writableStreamController=t,t._queue=void 0,t._queueTotalSize=void 0,Ce(t),t._abortReason=void 0,t._abortController=function(){if(gt)return new AbortController}(),t._started=!1,t._strategySizeAlgorithm=l,t._strategyHWM=i,t._writeAlgorithm=o,t._closeAlgorithm=n,t._abortAlgorithm=a;const s=Ht(t);jt(e,s);f(u(r()),(()=>(t._started=!0,Qt(t),null)),(r=>(t._started=!0,qt(e,r),null)))}function Yt(e){e._writeAlgorithm=void 0,e._closeAlgorithm=void 0,e._abortAlgorithm=void 0,e._strategySizeAlgorithm=void 0}function xt(e){return e._strategyHWM-e._queueTotalSize}function Qt(e){const t=e._controlledWritableStream;if(!e._started)return;if(void 0!==t._inFlightWriteRequest)return;if("erroring"===t._state)return void Wt(t);if(0===e._queue.length)return;const r=e._queue.peek().value;r===Ft?function(e){const t=e._controlledWritableStream;(function(e){e._inFlightCloseRequest=e._closeRequest,e._closeRequest=void 0})(t),Re(e);const r=e._closeAlgorithm();Yt(e),f(r,(()=>(function(e){e._inFlightCloseRequest._resolve(void 0),e._inFlightCloseRequest=void 0,"erroring"===e._state&&(e._storedError=void 0,void 0!==e._pendingAbortRequest&&(e._pendingAbortRequest._resolve(),e._pendingAbortRequest=void 0)),e._state="closed";const t=e._writer;void 0!==t&&tr(t)}(t),null)),(e=>(function(e,t){e._inFlightCloseRequest._reject(t),e._inFlightCloseRequest=void 0,void 0!==e._pendingAbortRequest&&(e._pendingAbortRequest._reject(t),e._pendingAbortRequest=void 0),qt(e,t)}(t,e),null)))}(e):function(e,t){const r=e._controlledWritableStream;!function(e){e._inFlightWriteRequest=e._writeRequests.shift()}(r);const o=e._writeAlgorithm(t);f(o,(()=>{!function(e){e._inFlightWriteRequest._resolve(void 0),e._inFlightWriteRequest=void 0}(r);const t=r._state;if(Re(e),!Bt(r)&&"writable"===t){const t=Ht(e);jt(r,t)}return Qt(e),null}),(t=>("writable"===r._state&&Yt(e),function(e,t){e._inFlightWriteRequest._reject(t),e._inFlightWriteRequest=void 0,qt(e,t)}(r,t),null)))}(e,r)}function Nt(e,t){"writable"===e._controlledWritableStream._state&&Vt(e,t)}function Ht(e){return xt(e)<=0}function Vt(e,t){const r=e._controlledWritableStream;Yt(e),Et(r,t)}function Ut(e){return new TypeError(`WritableStream.prototype.${e} can only be used on a WritableStream`)}function Gt(e){return new TypeError(`WritableStreamDefaultController.prototype.${e} can only be used on a WritableStreamDefaultController`)}function Xt(e){return new TypeError(`WritableStreamDefaultWriter.prototype.${e} can only be used on a WritableStreamDefaultWriter`)}function Jt(e){return new TypeError("Cannot "+e+" a stream using a released writer")}function Kt(e){e._closedPromise=s(((t,r)=>{e._closedPromise_resolve=t,e._closedPromise_reject=r,e._closedPromiseState="pending"}))}function Zt(e,t){Kt(e),er(e,t)}function er(e,t){void 0!==e._closedPromise_reject&&(_(e._closedPromise),e._closedPromise_reject(t),e._closedPromise_resolve=void 0,e._closedPromise_reject=void 0,e._closedPromiseState="rejected")}function tr(e){void 0!==e._closedPromise_resolve&&(e._closedPromise_resolve(void 0),e._closedPromise_resolve=void 0,e._closedPromise_reject=void 0,e._closedPromiseState="resolved")}function rr(e){e._readyPromise=s(((t,r)=>{e._readyPromise_resolve=t,e._readyPromise_reject=r})),e._readyPromiseState="pending"}function or(e,t){rr(e),ar(e,t)}function nr(e){rr(e),ir(e)}function ar(e,t){void 0!==e._readyPromise_reject&&(_(e._readyPromise),e._readyPromise_reject(t),e._readyPromise_resolve=void 0,e._readyPromise_reject=void 0,e._readyPromiseState="rejected")}function ir(e){void 0!==e._readyPromise_resolve&&(e._readyPromise_resolve(void 0),e._readyPromise_resolve=void 0,e._readyPromise_reject=void 0,e._readyPromiseState="fulfilled")}Object.defineProperties(WritableStreamDefaultController.prototype,{abortReason:{enumerable:!0},signal:{enumerable:!0},error:{enumerable:!0}}),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(WritableStreamDefaultController.prototype,Symbol.toStringTag,{value:"WritableStreamDefaultController",configurable:!0});const lr="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof self?self:"undefined"!=typeof global?global:void 0;const sr=function(){const e=null==lr?void 0:lr.DOMException;return function(e){if("function"!=typeof e&&"object"!=typeof e)return!1;if("DOMException"!==e.name)return!1;try{return new e,!0}catch(e){return!1}}(e)?e:void 0}()||function(){const e=function(e,t){this.message=e||"",this.name=t||"Error",Error.captureStackTrace&&Error.captureStackTrace(this,this.constructor)};return n(e,"DOMException"),e.prototype=Object.create(Error.prototype),Object.defineProperty(e.prototype,"constructor",{value:e,writable:!0,configurable:!0}),e}();function ur(e,r,o,n,a,i){const l=N(e),h=vt(r);e._disturbed=!0;let p=!1,y=u(void 0);return s(((S,g)=>{let v;if(void 0!==i){if(v=()=>{const t=void 0!==i.reason?i.reason:new sr("Aborted","AbortError"),o=[];n||o.push((()=>"writable"===r._state?Ct(r,t):u(void 0))),a||o.push((()=>"readable"===e._state?kr(e,t):u(void 0))),q((()=>Promise.all(o.map((e=>e())))),!0,t)},i.aborted)return void v();i.addEventListener("abort",v)}var w,R,T;if(P(e,l._closedPromise,(e=>(n?W(!0,e):q((()=>Ct(r,e)),!0,e),null))),P(r,h._closedPromise,(t=>(a?W(!0,t):q((()=>kr(e,t)),!0,t),null))),w=e,R=l._closedPromise,T=()=>(o?W():q((()=>function(e){const t=e._ownerWritableStream,r=t._state;return Bt(t)||"closed"===r?u(void 0):"errored"===r?c(t._storedError):At(e)}(h))),null),"closed"===w._state?T():b(R,T),Bt(r)||"closed"===r._state){const t=new TypeError("the destination writable stream closed before all data could be piped to it");a?W(!0,t):q((()=>kr(e,t)),!0,t)}function C(){const e=y;return d(y,(()=>e!==y?C():void 0))}function P(e,t,r){"errored"===e._state?r(e._storedError):m(t,r)}function q(e,t,o){function n(){return f(e(),(()=>B(t,o)),(e=>B(!0,e))),null}p||(p=!0,"writable"!==r._state||Bt(r)?n():b(C(),n))}function W(e,t){p||(p=!0,"writable"!==r._state||Bt(r)?B(e,t):b(C(),(()=>B(e,t))))}function B(e,t){return It(h),E(l),void 0!==i&&i.removeEventListener("abort",v),e?g(t):S(void 0),null}_(s(((e,r)=>{!function o(n){n?e():d(p?u(!0):d(h._readyPromise,(()=>s(((e,r)=>{J(l,{_chunkSteps:r=>{y=d(Lt(h,r),void 0,t),e(!1)},_closeSteps:()=>e(!0),_errorSteps:r})})))),o,r)}(!1)})))}))}class ReadableStreamDefaultController{constructor(){throw new TypeError("Illegal constructor")}get desiredSize(){if(!cr(this))throw gr("desiredSize");return pr(this)}close(){if(!cr(this))throw gr("close");if(!yr(this))throw new TypeError("The stream is not in a state that permits close");mr(this)}enqueue(e=void 0){if(!cr(this))throw gr("enqueue");if(!yr(this))throw new TypeError("The stream is not in a state that permits enqueue");return hr(this,e)}error(e=void 0){if(!cr(this))throw gr("error");_r(this,e)}[R](e){Ce(this);const t=this._cancelAlgorithm(e);return br(this),t}[T](e){const t=this._controlledReadableStream;if(this._queue.length>0){const r=Re(this);this._closeRequested&&0===this._queue.length?(br(this),Ar(t)):dr(this),e._chunkSteps(r)}else H(t,e),dr(this)}[C](){}}function cr(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_controlledReadableStream")&&e instanceof ReadableStreamDefaultController)}function dr(e){if(!fr(e))return;if(e._pulling)return void(e._pullAgain=!0);e._pulling=!0;f(e._pullAlgorithm(),(()=>(e._pulling=!1,e._pullAgain&&(e._pullAgain=!1,dr(e)),null)),(t=>(_r(e,t),null)))}function fr(e){const t=e._controlledReadableStream;if(!yr(e))return!1;if(!e._started)return!1;if(jr(t)&&U(t)>0)return!0;return pr(e)>0}function br(e){e._pullAlgorithm=void 0,e._cancelAlgorithm=void 0,e._strategySizeAlgorithm=void 0}function mr(e){if(!yr(e))return;const t=e._controlledReadableStream;e._closeRequested=!0,0===e._queue.length&&(br(e),Ar(t))}function hr(e,t){if(!yr(e))return;const r=e._controlledReadableStream;if(jr(r)&&U(r)>0)V(r,t,!1);else{let r;try{r=e._strategySizeAlgorithm(t)}catch(t){throw _r(e,t),t}try{Te(e,t,r)}catch(t){throw _r(e,t),t}}dr(e)}function _r(e,t){const r=e._controlledReadableStream;"readable"===r._state&&(Ce(e),br(e),Dr(r,t))}function pr(e){const t=e._controlledReadableStream._state;return"errored"===t?null:"closed"===t?0:e._strategyHWM-e._queueTotalSize}function yr(e){const t=e._controlledReadableStream._state;return!e._closeRequested&&"readable"===t}function Sr(e,t,r,o,n,a,i){t._controlledReadableStream=e,t._queue=void 0,t._queueTotalSize=void 0,Ce(t),t._started=!1,t._closeRequested=!1,t._pullAgain=!1,t._pulling=!1,t._strategySizeAlgorithm=i,t._strategyHWM=a,t._pullAlgorithm=o,t._cancelAlgorithm=n,e._readableStreamController=t;f(u(r()),(()=>(t._started=!0,dr(t),null)),(e=>(_r(t,e),null)))}function gr(e){return new TypeError(`ReadableStreamDefaultController.prototype.${e} can only be used on a ReadableStreamDefaultController`)}function vr(e,t){return qe(e._readableStreamController)?function(e){let t,r,o,n,a,i=N(e),l=!1,c=!1,d=!1,f=!1,b=!1;const h=s((e=>{a=e}));function _(e){m(e._closedPromise,(t=>(e!==i||(Ve(o._readableStreamController,t),Ve(n._readableStreamController,t),f&&b||a(void 0)),null)))}function y(){lt(i)&&(E(i),i=N(e),_(i));J(i,{_chunkSteps:t=>{p((()=>{c=!1,d=!1;const r=t;let i=t;if(!f&&!b)try{i=we(t)}catch(t){return Ve(o._readableStreamController,t),Ve(n._readableStreamController,t),void a(kr(e,t))}f||He(o._readableStreamController,r),b||He(n._readableStreamController,i),l=!1,c?g():d&&v()}))},_closeSteps:()=>{l=!1,f||Ne(o._readableStreamController),b||Ne(n._readableStreamController),o._readableStreamController._pendingPullIntos.length>0&&Je(o._readableStreamController,0),n._readableStreamController._pendingPullIntos.length>0&&Je(n._readableStreamController,0),f&&b||a(void 0)},_errorSteps:()=>{l=!1}})}function S(t,r){X(i)&&(E(i),i=ot(e),_(i));const s=r?n:o,u=r?o:n;st(i,t,1,{_chunkSteps:t=>{p((()=>{c=!1,d=!1;const o=r?b:f;if(r?f:b)o||Ke(s._readableStreamController,t);else{let r;try{r=we(t)}catch(t){return Ve(s._readableStreamController,t),Ve(u._readableStreamController,t),void a(kr(e,t))}o||Ke(s._readableStreamController,t),He(u._readableStreamController,r)}l=!1,c?g():d&&v()}))},_closeSteps:e=>{l=!1;const t=r?b:f,o=r?f:b;t||Ne(s._readableStreamController),o||Ne(u._readableStreamController),void 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TypeError(`ReadableStream.prototype.${e} can only be used on a ReadableStream`)}function Ir(e,t){z(e,t);const r=null==e?void 0:e.highWaterMark;return $(r,"highWaterMark","QueuingStrategyInit"),{highWaterMark:M(r)}}Object.defineProperties(ReadableStream,{from:{enumerable:!0}}),Object.defineProperties(ReadableStream.prototype,{cancel:{enumerable:!0},getReader:{enumerable:!0},pipeThrough:{enumerable:!0},pipeTo:{enumerable:!0},tee:{enumerable:!0},values:{enumerable:!0},locked:{enumerable:!0}}),n(ReadableStream.from,"from"),n(ReadableStream.prototype.cancel,"cancel"),n(ReadableStream.prototype.getReader,"getReader"),n(ReadableStream.prototype.pipeThrough,"pipeThrough"),n(ReadableStream.prototype.pipeTo,"pipeTo"),n(ReadableStream.prototype.tee,"tee"),n(ReadableStream.prototype.values,"values"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(ReadableStream.prototype,Symbol.toStringTag,{value:"ReadableStream",configurable:!0}),Object.defineProperty(ReadableStream.prototype,me,{value:ReadableStream.prototype.values,writable:!0,configurable:!0});const Lr=e=>e.byteLength;n(Lr,"size");class ByteLengthQueuingStrategy{constructor(e){F(e,1,"ByteLengthQueuingStrategy"),e=Ir(e,"First parameter"),this._byteLengthQueuingStrategyHighWaterMark=e.highWaterMark}get highWaterMark(){if(!$r(this))throw Fr("highWaterMark");return this._byteLengthQueuingStrategyHighWaterMark}get size(){if(!$r(this))throw Fr("size");return Lr}}function Fr(e){return new TypeError(`ByteLengthQueuingStrategy.prototype.${e} can only be used on a ByteLengthQueuingStrategy`)}function $r(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_byteLengthQueuingStrategyHighWaterMark")&&e instanceof ByteLengthQueuingStrategy)}Object.defineProperties(ByteLengthQueuingStrategy.prototype,{highWaterMark:{enumerable:!0},size:{enumerable:!0}}),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(ByteLengthQueuingStrategy.prototype,Symbol.toStringTag,{value:"ByteLengthQueuingStrategy",configurable:!0});const Mr=()=>1;n(Mr,"size");class CountQueuingStrategy{constructor(e){F(e,1,"CountQueuingStrategy"),e=Ir(e,"First parameter"),this._countQueuingStrategyHighWaterMark=e.highWaterMark}get highWaterMark(){if(!xr(this))throw Yr("highWaterMark");return this._countQueuingStrategyHighWaterMark}get size(){if(!xr(this))throw Yr("size");return Mr}}function Yr(e){return new TypeError(`CountQueuingStrategy.prototype.${e} can only be used on a CountQueuingStrategy`)}function xr(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_countQueuingStrategyHighWaterMark")&&e instanceof CountQueuingStrategy)}function Qr(e,t,r){return I(e,r),r=>S(e,t,[r])}function Nr(e,t,r){return I(e,r),r=>y(e,t,[r])}function Hr(e,t,r){return I(e,r),(r,o)=>S(e,t,[r,o])}function Vr(e,t,r){return I(e,r),r=>S(e,t,[r])}Object.defineProperties(CountQueuingStrategy.prototype,{highWaterMark:{enumerable:!0},size:{enumerable:!0}}),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(CountQueuingStrategy.prototype,Symbol.toStringTag,{value:"CountQueuingStrategy",configurable:!0});class TransformStream{constructor(e={},t={},r={}){void 0===e&&(e=null);const o=bt(t,"Second parameter"),n=bt(r,"Third parameter"),a=function(e,t){z(e,t);const r=null==e?void 0:e.cancel,o=null==e?void 0:e.flush,n=null==e?void 0:e.readableType,a=null==e?void 0:e.start,i=null==e?void 0:e.transform,l=null==e?void 0:e.writableType;return{cancel:void 0===r?void 0:Vr(r,e,`${t} has member 'cancel' that`),flush:void 0===o?void 0:Qr(o,e,`${t} has member 'flush' that`),readableType:n,start:void 0===a?void 0:Nr(a,e,`${t} has member 'start' that`),transform:void 0===i?void 0:Hr(i,e,`${t} has member 'transform' 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eo(r),f(n,(()=>("errored"===o._state?ao(r,o._storedError):(_r(o._readableStreamController,t),no(r)),null)),(e=>(_r(o._readableStreamController,e),ao(r,e),null))),r._finishPromise}(e,t)}function c(){return function(e){const t=e._transformStreamController;if(void 0!==t._finishPromise)return t._finishPromise;const r=e._readable;t._finishPromise=s(((e,r)=>{t._finishPromise_resolve=e,t._finishPromise_reject=r}));const o=t._flushAlgorithm();return eo(t),f(o,(()=>("errored"===r._state?ao(t,r._storedError):(mr(r._readableStreamController),no(t)),null)),(e=>(_r(r._readableStreamController,e),ao(t,e),null))),t._finishPromise}(e)}function d(){return function(e){return Kr(e,!1),e._backpressureChangePromise}(e)}function b(t){return function(e,t){const r=e._transformStreamController;if(void 0!==r._finishPromise)return r._finishPromise;const o=e._writable;r._finishPromise=s(((e,t)=>{r._finishPromise_resolve=e,r._finishPromise_reject=t}));const n=r._cancelAlgorithm(t);return eo(r),f(n,(()=>("errored"===o._state?ao(r,o._storedError):(Nt(o._writableStreamController,t),Jr(e),no(r)),null)),(t=>(Nt(o._writableStreamController,t),Jr(e),ao(r,t),null))),r._finishPromise}(e,t)}e._writable=function(e,t,r,o,n=1,a=(()=>1)){const i=Object.create(WritableStream.prototype);return wt(i),Mt(i,Object.create(WritableStreamDefaultController.prototype),e,t,r,o,n,a),i}(i,l,c,u,r,o),e._readable=Er(i,d,b,n,a),e._backpressure=void 0,e._backpressureChangePromise=void 0,e._backpressureChangePromise_resolve=void 0,Kr(e,!0),e._transformStreamController=void 0}(this,s((e=>{m=e})),d,b,i,l),function(e,t){const r=Object.create(TransformStreamDefaultController.prototype);let o,n,a;o=void 0!==t.transform?e=>t.transform(e,r):e=>{try{return to(r,e),u(void 0)}catch(e){return c(e)}};n=void 0!==t.flush?()=>t.flush(r):()=>u(void 0);a=void 0!==t.cancel?e=>t.cancel(e):()=>u(void 0);!function(e,t,r,o,n){t._controlledTransformStream=e,e._transformStreamController=t,t._transformAlgorithm=r,t._flushAlgorithm=o,t._cancelAlgorithm=n,t._finishPromise=void 0,t._finishPromise_resolve=void 0,t._finishPromise_reject=void 0}(e,r,o,n,a)}(this,a),void 0!==a.start?m(a.start(this._transformStreamController)):m(void 0)}get readable(){if(!Ur(this))throw io("readable");return this._readable}get writable(){if(!Ur(this))throw io("writable");return this._writable}}function Ur(e){return!!r(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_transformStreamController")&&e instanceof TransformStream)}function Gr(e,t){_r(e._readable._readableStreamController,t),Xr(e,t)}function Xr(e,t){eo(e._transformStreamController),Nt(e._writable._writableStreamController,t),Jr(e)}function Jr(e){e._backpressure&&Kr(e,!1)}function Kr(e,t){void 0!==e._backpressureChangePromise&&e._backpressureChangePromise_resolve(),e._backpressureChangePromise=s((t=>{e._backpressureChangePromise_resolve=t})),e._backpressure=t}Object.defineProperties(TransformStream.prototype,{readable:{enumerable:!0},writable:{enumerable:!0}}),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(TransformStream.prototype,Symbol.toStringTag,{value:"TransformStream",configurable:!0});class TransformStreamDefaultController{constructor(){throw new TypeError("Illegal constructor")}get desiredSize(){if(!Zr(this))throw oo("desiredSize");return pr(this._controlledTransformStream._readable._readableStreamController)}enqueue(e=void 0){if(!Zr(this))throw oo("enqueue");to(this,e)}error(e=void 0){if(!Zr(this))throw oo("error");var t;t=e,Gr(this._controlledTransformStream,t)}terminate(){if(!Zr(this))throw oo("terminate");!function(e){const t=e._controlledTransformStream;mr(t._readable._readableStreamController);const r=new TypeError("TransformStream 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0!==e._finishPromise_reject&&(_(e._finishPromise),e._finishPromise_reject(t),e._finishPromise_resolve=void 0,e._finishPromise_reject=void 0)}function io(e){return new TypeError(`TransformStream.prototype.${e} can only be used on a TransformStream`)}Object.defineProperties(TransformStreamDefaultController.prototype,{enqueue:{enumerable:!0},error:{enumerable:!0},terminate:{enumerable:!0},desiredSize:{enumerable:!0}}),n(TransformStreamDefaultController.prototype.enqueue,"enqueue"),n(TransformStreamDefaultController.prototype.error,"error"),n(TransformStreamDefaultController.prototype.terminate,"terminate"),"symbol"==typeof Symbol.toStringTag&&Object.defineProperty(TransformStreamDefaultController.prototype,Symbol.toStringTag,{value:"TransformStreamDefaultController",configurable:!0});const lo={ReadableStream:ReadableStream,ReadableStreamDefaultController:ReadableStreamDefaultController,ReadableByteStreamController:ReadableByteStreamController,ReadableStreamBYOBRequest:ReadableStreamBYOBRequest,ReadableStreamDefaultReader:ReadableStreamDefaultReader,ReadableStreamBYOBReader:ReadableStreamBYOBReader,WritableStream:WritableStream,WritableStreamDefaultController:WritableStreamDefaultController,WritableStreamDefaultWriter:WritableStreamDefaultWriter,ByteLengthQueuingStrategy:ByteLengthQueuingStrategy,CountQueuingStrategy:CountQueuingStrategy,TransformStream:TransformStream,TransformStreamDefaultController:TransformStreamDefaultController};if(void 0!==lr)for(const e in lo)Object.prototype.hasOwnProperty.call(lo,e)&&Object.defineProperty(lr,e,{value:lo[e],writable:!0,configurable:!0});e.ByteLengthQueuingStrategy=ByteLengthQueuingStrategy,e.CountQueuingStrategy=CountQueuingStrategy,e.ReadableByteStreamController=ReadableByteStreamController,e.ReadableStream=ReadableStream,e.ReadableStreamBYOBReader=ReadableStreamBYOBReader,e.ReadableStreamBYOBRequest=ReadableStreamBYOBRequest,e.ReadableStreamDefaultController=ReadableStreamDefaultController,e.ReadableStreamDefaultReader=ReadableStreamDefaultReader,e.TransformStream=TransformStream,e.TransformStreamDefaultController=TransformStreamDefaultController,e.WritableStream=WritableStream,e.WritableStreamDefaultController=WritableStreamDefaultController,e.WritableStreamDefaultWriter=WritableStreamDefaultWriter})); +//# sourceMappingURL=polyfill.es6.min.js.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es6.min.js.map b/node_modules/web-streams-polyfill/dist/polyfill.es6.min.js.map new file mode 100644 index 0000000..8f6055c --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es6.min.js.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.es6.min.js","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../node_modules/tslib/tslib.es6.js","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/validators/reader-options.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/from.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/pipe-options.ts","../src/lib/readable-stream.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n var _, done = false;\r\n for (var i = decorators.length - 1; i >= 0; i--) {\r\n var context = {};\r\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n if (kind === \"accessor\") {\r\n if (result === void 0) continue;\r\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n if (_ = accept(result.get)) descriptor.get = _;\r\n if (_ = accept(result.set)) descriptor.set = _;\r\n if (_ = accept(result.init)) initializers.unshift(_);\r\n }\r\n else if (_ = accept(result)) {\r\n if (kind === \"field\") initializers.unshift(_);\r\n else descriptor[key] = _;\r\n }\r\n }\r\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n var useValue = arguments.length > 2;\r\n for (var i = 0; i < initializers.length; i++) {\r\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n }\r\n return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es6.mjs b/node_modules/web-streams-polyfill/dist/polyfill.es6.mjs new file mode 100644 index 0000000..6091f79 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es6.mjs @@ -0,0 +1,4818 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +function noop() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +const rethrowAssertionErrorRejection = noop; +function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } +} + +const originalPromise = Promise; +const originalPromiseThen = Promise.prototype.then; +const originalPromiseReject = Promise.reject.bind(originalPromise); +// https://webidl.spec.whatwg.org/#a-new-promise +function newPromise(executor) { + return new originalPromise(executor); +} +// https://webidl.spec.whatwg.org/#a-promise-resolved-with +function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); +} +// https://webidl.spec.whatwg.org/#a-promise-rejected-with +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned +// from that handler. To prevent this, return null instead of void from all handlers. +// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); +}; +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +const QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } +} + +const AbortSteps = Symbol('[[AbortSteps]]'); +const ErrorSteps = Symbol('[[ErrorSteps]]'); +const CancelSteps = Symbol('[[CancelSteps]]'); +const PullSteps = Symbol('[[PullSteps]]'); +const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); +setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); +} +function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); +} + +/****************************************************************************** +Copyright (c) Microsoft Corporation. + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH +REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, +INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM +LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. +***************************************************************************** */ +/* global Reflect, Promise, SuppressedError, Symbol */ + + +function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); +} + +function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); +} + +function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } +} + +function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } +} + +function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } +} + +typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; +}; + +var _a, _b, _c; +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); +}; +let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); +}; +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} +function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; +} +function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (function () { + return __asyncGenerator(this, arguments, function* () { + return yield __await(yield __await(yield* __asyncDelegator(__asyncValues(syncIterable)))); + }); + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; +} +// Aligns with core-js/modules/es.symbol.async-iterator.js +const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; +function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; +} +function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; +} +function IteratorComplete(iterResult) { + return Boolean(iterResult.done); +} +function IteratorValue(iterResult) { + return iterResult.value; +} + +/// +// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. +const AsyncIteratorPrototype = { + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + [SymbolAsyncIterator]() { + return this; + } +}; +Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + +/// +class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } +} +const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +function isDataViewConstructor(ctor) { + return ctor === DataView; +} +function isDataView(view) { + return isDataViewConstructor(view.constructor); +} +function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } +} +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); +setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); +} +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } +} +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableByteStreamController.prototype.close, 'close'); +setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableByteStreamController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); +} +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); +} +function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } +} +function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; +} +function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); +setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } +} +function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); +} +function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } +} + +function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} +const supportsAbortController = typeof AbortController === 'function'; +/** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ +function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } +} +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(WritableStream.prototype.abort, 'abort'); +setFunctionName(WritableStream.prototype.close, 'close'); +setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); +} +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } +} +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); +setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); +setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); +setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); +} +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +const closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } +} +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); +} +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} + +/// +function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; +} +const globals = getGlobals(); + +/// +function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } +} +/** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ +function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; +} +/** + * Support: + * - All platforms + */ +function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; +} +// eslint-disable-next-line @typescript-eslint/no-redeclare +const DOMException = getFromGlobal() || createPolyfill(); + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } +} +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); +setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); +} +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; +} + +function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); +} +function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} +function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } +} +Object.defineProperties(ReadableStream, { + from: { enumerable: true } +}); +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(ReadableStream.from, 'from'); +setFunctionName(ReadableStream.prototype.cancel, 'cancel'); +setFunctionName(ReadableStream.prototype.getReader, 'getReader'); +setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); +setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); +setFunctionName(ReadableStream.prototype.tee, 'tee'); +setFunctionName(ReadableStream.prototype.values, 'values'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); +} +Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; +}; +setFunctionName(byteLengthSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } +} +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); +} +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +const countSizeFunction = () => { + return 1; +}; +setFunctionName(countSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } +} +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); +} +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} +function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } +} +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); +} +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); +} +function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } +} +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); +setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); +} +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); +} +function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); +} + +const exports = { + ReadableStream, + ReadableStreamDefaultController, + ReadableByteStreamController, + ReadableStreamBYOBRequest, + ReadableStreamDefaultReader, + ReadableStreamBYOBReader, + WritableStream, + WritableStreamDefaultController, + WritableStreamDefaultWriter, + ByteLengthQueuingStrategy, + CountQueuingStrategy, + TransformStream, + TransformStreamDefaultController +}; +// Add classes to global scope +if (typeof globals !== 'undefined') { + for (const prop in exports) { + if (Object.prototype.hasOwnProperty.call(exports, prop)) { + Object.defineProperty(globals, prop, { + value: exports[prop], + writable: true, + configurable: true + }); + } + } +} + +export { ByteLengthQueuingStrategy, CountQueuingStrategy, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, TransformStream, TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter }; +//# sourceMappingURL=polyfill.es6.mjs.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.es6.mjs.map b/node_modules/web-streams-polyfill/dist/polyfill.es6.mjs.map new file mode 100644 index 0000000..d37f8bc --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.es6.mjs.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.es6.mjs","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../node_modules/tslib/tslib.es6.js","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n var _, done = false;\r\n for (var i = decorators.length - 1; i >= 0; i--) {\r\n var context = {};\r\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n if (kind === \"accessor\") {\r\n if (result === void 0) continue;\r\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n if (_ = accept(result.get)) descriptor.get = _;\r\n if (_ = accept(result.set)) descriptor.set = _;\r\n if (_ = accept(result.init)) initializers.unshift(_);\r\n }\r\n else if (_ = accept(result)) {\r\n if (kind === \"field\") initializers.unshift(_);\r\n else descriptor[key] = _;\r\n }\r\n }\r\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n var useValue = arguments.length > 2;\r\n for (var i = 0; i < initializers.length; i++) {\r\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n }\r\n return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. 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It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/polyfill.js b/node_modules/web-streams-polyfill/dist/polyfill.js new file mode 100644 index 0000000..b7ae6d4 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.js @@ -0,0 +1,5011 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.WebStreamsPolyfill = {})); +})(this, (function (exports) { 'use strict'; + + /// + var SymbolPolyfill = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? + Symbol : + function (description) { return "Symbol(".concat(description, ")"); }; + + /****************************************************************************** + Copyright (c) Microsoft Corporation. + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + PERFORMANCE OF THIS SOFTWARE. + ***************************************************************************** */ + /* global Reflect, Promise, SuppressedError, Symbol */ + + + function __generator(thisArg, body) { + var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; + return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; + function verb(n) { return function (v) { return step([n, v]); }; } + function step(op) { + if (f) throw new TypeError("Generator is already executing."); + while (g && (g = 0, op[0] && (_ = 0)), _) try { + if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t; + if (y = 0, t) op = [op[0] & 2, t.value]; + switch (op[0]) { + case 0: case 1: t = op; break; + case 4: _.label++; return { value: op[1], done: false }; + case 5: _.label++; y = op[1]; op = [0]; continue; + case 7: op = _.ops.pop(); _.trys.pop(); continue; + default: + if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } + if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } + if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } + if (t[2]) _.ops.pop(); + _.trys.pop(); continue; + } + op = body.call(thisArg, _); + } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } + if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; + } + } + + function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); + } + + function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); + } + + function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } + } + + function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } + } + + function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } + } + + typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; + }; + + function noop() { + return undefined; + } + + function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + var rethrowAssertionErrorRejection = noop; + function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } + } + + var originalPromise = Promise; + var originalPromiseThen = Promise.prototype.then; + var originalPromiseReject = Promise.reject.bind(originalPromise); + // https://webidl.spec.whatwg.org/#a-new-promise + function newPromise(executor) { + return new originalPromise(executor); + } + // https://webidl.spec.whatwg.org/#a-promise-resolved-with + function promiseResolvedWith(value) { + return newPromise(function (resolve) { return resolve(value); }); + } + // https://webidl.spec.whatwg.org/#a-promise-rejected-with + function promiseRejectedWith(reason) { + return originalPromiseReject(reason); + } + function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); + } + // Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned + // from that handler. To prevent this, return null instead of void from all handlers. + // http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it + function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); + } + function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); + } + function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); + } + function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); + } + function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); + } + var _queueMicrotask = function (callback) { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + var resolvedPromise_1 = promiseResolvedWith(undefined); + _queueMicrotask = function (cb) { return PerformPromiseThen(resolvedPromise_1, cb); }; + } + return _queueMicrotask(callback); + }; + function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); + } + function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } + } + + // Original from Chromium + // https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js + var QUEUE_MAX_ARRAY_SIZE = 16384; + /** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ + var SimpleQueue = /** @class */ (function () { + function SimpleQueue() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + Object.defineProperty(SimpleQueue.prototype, "length", { + get: function () { + return this._size; + }, + enumerable: false, + configurable: true + }); + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + SimpleQueue.prototype.push = function (element) { + var oldBack = this._back; + var newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + }; + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + SimpleQueue.prototype.shift = function () { // must not be called on an empty queue + var oldFront = this._front; + var newFront = oldFront; + var oldCursor = this._cursor; + var newCursor = oldCursor + 1; + var elements = oldFront._elements; + var element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + }; + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + SimpleQueue.prototype.forEach = function (callback) { + var i = this._cursor; + var node = this._front; + var elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + }; + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + SimpleQueue.prototype.peek = function () { // must not be called on an empty queue + var front = this._front; + var cursor = this._cursor; + return front._elements[cursor]; + }; + return SimpleQueue; + }()); + + var AbortSteps = SymbolPolyfill('[[AbortSteps]]'); + var ErrorSteps = SymbolPolyfill('[[ErrorSteps]]'); + var CancelSteps = SymbolPolyfill('[[CancelSteps]]'); + var PullSteps = SymbolPolyfill('[[PullSteps]]'); + var ReleaseSteps = SymbolPolyfill('[[ReleaseSteps]]'); + + function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } + } + // A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state + // check. + function ReadableStreamReaderGenericCancel(reader, reason) { + var stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); + } + function ReadableStreamReaderGenericRelease(reader) { + var stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; + } + // Helper functions for the readers. + function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise(function (resolve, reject) { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); + } + function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); + } + function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); + } + function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); + } + function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill + var NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); + }; + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill + var MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); + }; + + // https://heycam.github.io/webidl/#idl-dictionaries + function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; + } + function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError("".concat(context, " is not an object.")); + } + } + // https://heycam.github.io/webidl/#idl-callback-functions + function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError("".concat(context, " is not a function.")); + } + } + // https://heycam.github.io/webidl/#idl-object + function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError("".concat(context, " is not an object.")); + } + } + function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError("Parameter ".concat(position, " is required in '").concat(context, "'.")); + } + } + function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError("".concat(field, " is required in '").concat(context, "'.")); + } + } + // https://heycam.github.io/webidl/#idl-unrestricted-double + function convertUnrestrictedDouble(value) { + return Number(value); + } + function censorNegativeZero(x) { + return x === 0 ? 0 : x; + } + function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); + } + // https://heycam.github.io/webidl/#idl-unsigned-long-long + function convertUnsignedLongLongWithEnforceRange(value, context) { + var lowerBound = 0; + var upperBound = Number.MAX_SAFE_INTEGER; + var x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError("".concat(context, " is not a finite number")); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError("".concat(context, " is outside the accepted range of ").concat(lowerBound, " to ").concat(upperBound, ", inclusive")); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; + } + + function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError("".concat(context, " is not a ReadableStream.")); + } + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); + } + function ReadableStreamFulfillReadRequest(stream, chunk, done) { + var reader = stream._reader; + var readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; + } + function ReadableStreamHasDefaultReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; + } + /** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ + var ReadableStreamDefaultReader = /** @class */ (function () { + function ReadableStreamDefaultReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamDefaultReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamDefaultReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + ReadableStreamDefaultReader.prototype.read = function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function () { return resolvePromise({ value: undefined, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamDefaultReader.prototype.releaseLock = function () { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + }; + return ReadableStreamDefaultReader; + }()); + Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); + setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; + } + function ReadableStreamDefaultReaderRead(reader, readRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } + } + function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderBrandCheckException(name) { + return new TypeError("ReadableStreamDefaultReader.prototype.".concat(name, " can only be used on a ReadableStreamDefaultReader")); + } + + var _a$1, _b, _c; + function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); + } + function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); + } + var TransferArrayBuffer = function (O) { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = function (buffer) { return buffer.transfer(); }; + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = function (buffer) { return structuredClone(buffer, { transfer: [buffer] }); }; + } + else { + // Not implemented correctly + TransferArrayBuffer = function (buffer) { return buffer; }; + } + return TransferArrayBuffer(O); + }; + var IsDetachedBuffer = function (O) { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = function (buffer) { return buffer.detached; }; + } + else { + // Not implemented correctly + IsDetachedBuffer = function (buffer) { return buffer.byteLength === 0; }; + } + return IsDetachedBuffer(O); + }; + function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + var length = end - begin; + var slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; + } + function GetMethod(receiver, prop) { + var func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError("".concat(String(prop), " is not a function")); + } + return func; + } + function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + var _a; + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + var syncIterable = (_a = {}, + _a[SymbolPolyfill.iterator] = function () { return syncIteratorRecord.iterator; }, + _a); + // Create an async generator function and immediately invoke it. + var asyncIterator = (function () { + return __asyncGenerator(this, arguments, function () { + return __generator(this, function (_a) { + switch (_a.label) { + case 0: return [5 /*yield**/, __values(__asyncDelegator(__asyncValues(syncIterable)))]; + case 1: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 2: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 3: return [2 /*return*/, _a.sent()]; + } + }); + }); + }()); + // Return as an async iterator record. + var nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod: nextMethod, done: false }; + } + // Aligns with core-js/modules/es.symbol.async-iterator.js + var SymbolAsyncIterator = (_c = (_a$1 = SymbolPolyfill.asyncIterator) !== null && _a$1 !== void 0 ? _a$1 : (_b = SymbolPolyfill.for) === null || _b === void 0 ? void 0 : _b.call(SymbolPolyfill, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; + function GetIterator(obj, hint, method) { + if (hint === void 0) { hint = 'sync'; } + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + var syncMethod = GetMethod(obj, SymbolPolyfill.iterator); + var syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, SymbolPolyfill.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + var iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + var nextMethod = iterator.next; + return { iterator: iterator, nextMethod: nextMethod, done: false }; + } + function IteratorNext(iteratorRecord) { + var result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; + } + function IteratorComplete(iterResult) { + return Boolean(iterResult.done); + } + function IteratorValue(iterResult) { + return iterResult.value; + } + + /// + var _a; + // We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. + var AsyncIteratorPrototype = (_a = {}, + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + _a[SymbolAsyncIterator] = function () { + return this; + }, + _a); + Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + + /// + var ReadableStreamAsyncIteratorImpl = /** @class */ (function () { + function ReadableStreamAsyncIteratorImpl(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + ReadableStreamAsyncIteratorImpl.prototype.next = function () { + var _this = this; + var nextSteps = function () { return _this._nextSteps(); }; + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + }; + ReadableStreamAsyncIteratorImpl.prototype.return = function (value) { + var _this = this; + var returnSteps = function () { return _this._returnSteps(value); }; + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + }; + ReadableStreamAsyncIteratorImpl.prototype._nextSteps = function () { + var _this = this; + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + var reader = this._reader; + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { + _this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(function () { return resolvePromise({ value: chunk, done: false }); }); + }, + _closeSteps: function () { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: function (reason) { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + }; + ReadableStreamAsyncIteratorImpl.prototype._returnSteps = function (value) { + if (this._isFinished) { + return Promise.resolve({ value: value, done: true }); + } + this._isFinished = true; + var reader = this._reader; + if (!this._preventCancel) { + var result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, function () { return ({ value: value, done: true }); }); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value: value, done: true }); + }; + return ReadableStreamAsyncIteratorImpl; + }()); + var ReadableStreamAsyncIteratorPrototype = { + next: function () { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return: function (value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } + }; + Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); + // Abstract operations for the ReadableStream. + function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + var reader = AcquireReadableStreamDefaultReader(stream); + var impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + var iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; + } + function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } + } + // Helper functions for the ReadableStream. + function streamAsyncIteratorBrandCheckException(name) { + return new TypeError("ReadableStreamAsyncIterator.".concat(name, " can only be used on a ReadableSteamAsyncIterator")); + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill + var NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; + }; + + function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; + } + function CloneAsUint8Array(O) { + var buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); + } + + function DequeueValue(container) { + var pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; + } + function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value: value, size: size }); + container._queueTotalSize += size; + } + function PeekQueueValue(container) { + var pair = container._queue.peek(); + return pair.value; + } + function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; + } + + function isDataViewConstructor(ctor) { + return ctor === DataView; + } + function isDataView(view) { + return isDataViewConstructor(view.constructor); + } + function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; + } + + /** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ + var ReadableStreamBYOBRequest = /** @class */ (function () { + function ReadableStreamBYOBRequest() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamBYOBRequest.prototype, "view", { + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get: function () { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + }, + enumerable: false, + configurable: true + }); + ReadableStreamBYOBRequest.prototype.respond = function (bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError("The BYOB request's buffer has been detached and so cannot be used as a response"); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + }; + ReadableStreamBYOBRequest.prototype.respondWithNewView = function (view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + }; + return ReadableStreamBYOBRequest; + }()); + Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); + setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); + } + /** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ + var ReadableByteStreamController = /** @class */ (function () { + function ReadableByteStreamController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableByteStreamController.prototype, "byobRequest", { + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ReadableByteStreamController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableByteStreamController.prototype.close = function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be closed")); + } + ReadableByteStreamControllerClose(this); + }; + ReadableByteStreamController.prototype.enqueue = function (chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError("chunk's buffer must have non-zero byteLength"); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be enqueued to")); + } + ReadableByteStreamControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableByteStreamController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + }; + /** @internal */ + ReadableByteStreamController.prototype[CancelSteps] = function (reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableByteStreamController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + var autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + var buffer = void 0; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + }; + /** @internal */ + ReadableByteStreamController.prototype[ReleaseSteps] = function () { + if (this._pendingPullIntos.length > 0) { + var firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + }; + return ReadableByteStreamController; + }()); + Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableByteStreamController.prototype.close, 'close'); + setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableByteStreamController.prototype.error, 'error'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); + } + // Abstract operations for the ReadableByteStreamController. + function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; + } + function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; + } + function ReadableByteStreamControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableByteStreamControllerError(controller, e); + return null; + }); + } + function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); + } + function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + var done = false; + if (stream._state === 'closed') { + done = true; + } + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } + } + function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + var bytesFilled = pullIntoDescriptor.bytesFilled; + var elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); + } + function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer: buffer, byteOffset: byteOffset, byteLength: byteLength }); + controller._queueTotalSize += byteLength; + } + function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + var clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); + } + function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + var maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + var maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + var totalBytesToCopyRemaining = maxBytesToCopy; + var ready = false; + var remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + var maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + var queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + var headOfQueue = queue.peek(); + var bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + var destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; + } + function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; + } + function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + } + function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; + } + function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + var reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } + } + function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + var stream = controller._controlledReadableByteStream; + var ctor = view.constructor; + var elementSize = arrayBufferViewElementSize(ctor); + var byteOffset = view.byteOffset, byteLength = view.byteLength; + var minimumFill = min * elementSize; + var buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: buffer.byteLength, + byteOffset: byteOffset, + byteLength: byteLength, + bytesFilled: 0, + minimumFill: minimumFill, + elementSize: elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + var emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + var pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + var remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + var end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerShiftPendingPullInto(controller) { + var descriptor = controller._pendingPullIntos.shift(); + return descriptor; + } + function ReadableByteStreamControllerShouldCallPull(controller) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + // A client of ReadableByteStreamController may use these functions directly to bypass state check. + function ReadableByteStreamControllerClose(controller) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + function ReadableByteStreamControllerEnqueue(controller, chunk) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + var buffer = chunk.buffer, byteOffset = chunk.byteOffset, byteLength = chunk.byteLength; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + var transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerError(controller, e) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + var entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + var view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + } + function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + var byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; + } + function ReadableByteStreamControllerGetDesiredSize(controller) { + var state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + function ReadableByteStreamControllerRespond(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); + } + function ReadableByteStreamControllerRespondWithNewView(controller, view) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + var viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); + } + function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableByteStreamControllerError(controller, r); + return null; + }); + } + function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + var controller = Object.create(ReadableByteStreamController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = function () { return underlyingByteSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingByteSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingByteSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + var autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); + } + function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; + } + // Helper functions for the ReadableStreamBYOBRequest. + function byobRequestBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBRequest.prototype.".concat(name, " can only be used on a ReadableStreamBYOBRequest")); + } + // Helper functions for the ReadableByteStreamController. + function byteStreamControllerBrandCheckException(name) { + return new TypeError("ReadableByteStreamController.prototype.".concat(name, " can only be used on a ReadableByteStreamController")); + } + + function convertReaderOptions(options, context) { + assertDictionary(options, context); + var mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, "".concat(context, " has member 'mode' that")) + }; + } + function convertReadableStreamReaderMode(mode, context) { + mode = "".concat(mode); + if (mode !== 'byob') { + throw new TypeError("".concat(context, " '").concat(mode, "' is not a valid enumeration value for ReadableStreamReaderMode")); + } + return mode; + } + function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + var min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, "".concat(context, " has member 'min' that")) + }; + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); + } + function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + var reader = stream._reader; + var readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; + } + function ReadableStreamHasBYOBReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; + } + /** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ + var ReadableStreamBYOBReader = /** @class */ (function () { + function ReadableStreamBYOBReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamBYOBReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamBYOBReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + ReadableStreamBYOBReader.prototype.read = function (view, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError("view's buffer must have non-zero byteLength")); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + var options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + var min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readIntoRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function (chunk) { return resolvePromise({ value: chunk, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamBYOBReader.prototype.releaseLock = function () { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + }; + return ReadableStreamBYOBReader; + }()); + Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); + setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; + } + function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } + } + function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamBYOBReader. + function byobReaderBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBReader.prototype.".concat(name, " can only be used on a ReadableStreamBYOBReader")); + } + + function ExtractHighWaterMark(strategy, defaultHWM) { + var highWaterMark = strategy.highWaterMark; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; + } + function ExtractSizeAlgorithm(strategy) { + var size = strategy.size; + if (!size) { + return function () { return 1; }; + } + return size; + } + + function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + var size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, "".concat(context, " has member 'size' that")) + }; + } + function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return function (chunk) { return convertUnrestrictedDouble(fn(chunk)); }; + } + + function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + var abort = original === null || original === void 0 ? void 0 : original.abort; + var close = original === null || original === void 0 ? void 0 : original.close; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + var write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, "".concat(context, " has member 'abort' that")), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, "".concat(context, " has member 'close' that")), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, "".concat(context, " has member 'start' that")), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, "".concat(context, " has member 'write' that")), + type: type + }; + } + function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; + } + function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return function () { return promiseCall(fn, original, []); }; + } + function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; + } + function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; + } + + function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError("".concat(context, " is not a WritableStream.")); + } + } + + function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } + } + var supportsAbortController = typeof AbortController === 'function'; + /** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ + function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; + } + + /** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ + var WritableStream = /** @class */ (function () { + function WritableStream(rawUnderlyingSink, rawStrategy) { + if (rawUnderlyingSink === void 0) { rawUnderlyingSink = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + var type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + Object.defineProperty(WritableStream.prototype, "locked", { + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get: function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + WritableStream.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + }; + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + WritableStream.prototype.close = function () { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + }; + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + WritableStream.prototype.getWriter = function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + }; + return WritableStream; + }()); + Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(WritableStream.prototype.abort, 'abort'); + setFunctionName(WritableStream.prototype.close, 'close'); + setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStream', + configurable: true + }); + } + // Abstract operations for the WritableStream. + function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); + } + // Throws if and only if startAlgorithm throws. + function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + var controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; + } + function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; + } + function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; + } + function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + var wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + var promise = newPromise(function (resolve, reject) { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; + } + function WritableStreamClose(stream) { + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError("The stream (in ".concat(state, " state) is not in the writable state and cannot be closed"))); + } + var promise = newPromise(function (resolve, reject) { + var closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + var writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; + } + // WritableStream API exposed for controllers. + function WritableStreamAddWriteRequest(stream) { + var promise = newPromise(function (resolve, reject) { + var writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; + } + function WritableStreamDealWithRejection(stream, error) { + var state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); + } + function WritableStreamStartErroring(stream, reason) { + var controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + var writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } + } + function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + var storedError = stream._storedError; + stream._writeRequests.forEach(function (writeRequest) { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, function () { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, function (reason) { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); + } + function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; + } + function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); + } + function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + var state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } + } + function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); + } + // TODO(ricea): Fix alphabetical order. + function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; + } + function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); + } + function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } + } + function WritableStreamUpdateBackpressure(stream, backpressure) { + var writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; + } + /** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ + var WritableStreamDefaultWriter = /** @class */ (function () { + function WritableStreamDefaultWriter(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + var state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + var storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + Object.defineProperty(WritableStreamDefaultWriter.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "desiredSize", { + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "ready", { + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + WritableStreamDefaultWriter.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + }; + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + WritableStreamDefaultWriter.prototype.close = function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + }; + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + WritableStreamDefaultWriter.prototype.releaseLock = function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + }; + WritableStreamDefaultWriter.prototype.write = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + }; + return WritableStreamDefaultWriter; + }()); + Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } + }); + setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); + setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); + setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); + setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); + } + // Abstract operations for the WritableStreamDefaultWriter. + function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; + } + // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. + function WritableStreamDefaultWriterAbort(writer, reason) { + var stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); + } + function WritableStreamDefaultWriterClose(writer) { + var stream = writer._ownerWritableStream; + return WritableStreamClose(stream); + } + function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); + } + function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterGetDesiredSize(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); + } + function WritableStreamDefaultWriterRelease(writer) { + var stream = writer._ownerWritableStream; + var releasedError = new TypeError("Writer was released and can no longer be used to monitor the stream's closedness"); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; + } + function WritableStreamDefaultWriterWrite(writer, chunk) { + var stream = writer._ownerWritableStream; + var controller = stream._writableStreamController; + var chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + var state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + var promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; + } + var closeSentinel = {}; + /** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ + var WritableStreamDefaultController = /** @class */ (function () { + function WritableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(WritableStreamDefaultController.prototype, "abortReason", { + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultController.prototype, "signal", { + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + WritableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + var state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + }; + /** @internal */ + WritableStreamDefaultController.prototype[AbortSteps] = function (reason) { + var result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + WritableStreamDefaultController.prototype[ErrorSteps] = function () { + ResetQueue(this); + }; + return WritableStreamDefaultController; + }()); + Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); + } + // Abstract operations implementing interface required by the WritableStream. + function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; + } + function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + var startResult = startAlgorithm(); + var startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, function () { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (r) { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); + } + function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + var controller = Object.create(WritableStreamDefaultController.prototype); + var startAlgorithm; + var writeAlgorithm; + var closeAlgorithm; + var abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = function () { return underlyingSink.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = function (chunk) { return underlyingSink.write(chunk, controller); }; + } + else { + writeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = function () { return underlyingSink.close(); }; + } + else { + closeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = function (reason) { return underlyingSink.abort(reason); }; + } + else { + abortAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + } + // ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. + function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } + } + function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; + } + function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + var stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + // Abstract operations for the WritableStreamDefaultController. + function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + var stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + var state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + var value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } + } + function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } + } + function WritableStreamDefaultControllerProcessClose(controller) { + var stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + var sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, function () { + WritableStreamFinishInFlightClose(stream); + return null; + }, function (reason) { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + var stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + var sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, function () { + WritableStreamFinishInFlightWrite(stream); + var state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (reason) { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerGetBackpressure(controller) { + var desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; + } + // A client of WritableStreamDefaultController may use these functions directly to bypass state check. + function WritableStreamDefaultControllerError(controller, error) { + var stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); + } + // Helper functions for the WritableStream. + function streamBrandCheckException$2(name) { + return new TypeError("WritableStream.prototype.".concat(name, " can only be used on a WritableStream")); + } + // Helper functions for the WritableStreamDefaultController. + function defaultControllerBrandCheckException$2(name) { + return new TypeError("WritableStreamDefaultController.prototype.".concat(name, " can only be used on a WritableStreamDefaultController")); + } + // Helper functions for the WritableStreamDefaultWriter. + function defaultWriterBrandCheckException(name) { + return new TypeError("WritableStreamDefaultWriter.prototype.".concat(name, " can only be used on a WritableStreamDefaultWriter")); + } + function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); + } + function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise(function (resolve, reject) { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); + } + function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); + } + function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); + } + function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; + } + function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; + } + function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise(function (resolve, reject) { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; + } + function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); + } + function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); + } + function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; + } + function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); + } + function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; + } + + /// + function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; + } + var globals = getGlobals(); + + /// + function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } + } + /** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ + function getFromGlobal() { + var ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; + } + /** + * Support: + * - All platforms + */ + function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + var ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; + } + // eslint-disable-next-line @typescript-eslint/no-redeclare + var DOMException = getFromGlobal() || createPolyfill(); + + function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + var reader = AcquireReadableStreamDefaultReader(source); + var writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + var shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + var currentWrite = promiseResolvedWith(undefined); + return newPromise(function (resolve, reject) { + var abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = function () { + var error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + var actions = []; + if (!preventAbort) { + actions.push(function () { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(function () { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(function () { return Promise.all(actions.map(function (action) { return action(); })); }, true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise(function (resolveLoop, rejectLoop) { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, function () { + return newPromise(function (resolveRead, rejectRead) { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: function (chunk) { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: function () { return resolveRead(true); }, + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, function (storedError) { + if (!preventAbort) { + shutdownWithAction(function () { return WritableStreamAbort(dest, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, function (storedError) { + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, function () { + if (!preventClose) { + shutdownWithAction(function () { return WritableStreamDefaultWriterCloseWithErrorPropagation(writer); }); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + var destClosed_1 = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, destClosed_1); }, true, destClosed_1); + } + else { + shutdown(true, destClosed_1); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + var oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, function () { return oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined; }); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), function () { return finalize(originalIsError, originalError); }, function (newError) { return finalize(true, newError); }); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), function () { return finalize(isError, error); }); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); + } + + /** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ + var ReadableStreamDefaultController = /** @class */ (function () { + function ReadableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableStreamDefaultController.prototype.close = function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + }; + ReadableStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + }; + /** @internal */ + ReadableStreamDefaultController.prototype[CancelSteps] = function (reason) { + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableStreamDefaultController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableStream; + if (this._queue.length > 0) { + var chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + }; + /** @internal */ + ReadableStreamDefaultController.prototype[ReleaseSteps] = function () { + // Do nothing. + }; + return ReadableStreamDefaultController; + }()); + Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); + setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); + } + // Abstract operations for the ReadableStreamDefaultController. + function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; + } + function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); + } + function ReadableStreamDefaultControllerShouldCallPull(controller) { + var stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + // A client of ReadableStreamDefaultController may use these functions directly to bypass state check. + function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + } + function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + var chunkSize = void 0; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + function ReadableStreamDefaultControllerError(controller, e) { + var stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableStreamDefaultControllerGetDesiredSize(controller) { + var state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + // This is used in the implementation of TransformStream. + function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; + } + function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + var state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; + } + function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); + } + function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + var controller = Object.create(ReadableStreamDefaultController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = function () { return underlyingSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + } + // Helper functions for the ReadableStreamDefaultController. + function defaultControllerBrandCheckException$1(name) { + return new TypeError("ReadableStreamDefaultController.prototype.".concat(name, " can only be used on a ReadableStreamDefaultController")); + } + + function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); + } + function ReadableStreamDefaultTee(stream, cloneForBranch2) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgain = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgain = false; + var chunk1 = chunk; + var chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, function (r) { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; + } + function ReadableByteStreamTee(stream) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgainForBranch1 = false; + var readAgainForBranch2 = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, function (r) { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var chunk1 = chunk; + var chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + var byobBranch = forBranch2 ? branch2 : branch1; + var otherBranch = forBranch2 ? branch1 : branch2; + var readIntoRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + var clonedChunk = void 0; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function (chunk) { + reading = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; + } + + function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; + } + + function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); + } + function ReadableStreamFromIterable(asyncIterable) { + var stream; + var iteratorRecord = GetIterator(asyncIterable, 'async'); + var startAlgorithm = noop; + function pullAlgorithm() { + var nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + var nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + var done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + var iterator = iteratorRecord.iterator; + var returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + var returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + var returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + function ReadableStreamFromDefaultReader(reader) { + var stream; + var startAlgorithm = noop; + function pullAlgorithm() { + var readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, function (readResult) { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + + function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + var original = source; + var autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var pull = original === null || original === void 0 ? void 0 : original.pull; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, "".concat(context, " has member 'autoAllocateChunkSize' that")), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, "".concat(context, " has member 'pull' that")), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, "".concat(context, " has member 'start' that")), + type: type === undefined ? undefined : convertReadableStreamType(type, "".concat(context, " has member 'type' that")) + }; + } + function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; + } + function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; + } + function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; + } + function convertReadableStreamType(type, context) { + type = "".concat(type); + if (type !== 'bytes') { + throw new TypeError("".concat(context, " '").concat(type, "' is not a valid enumeration value for ReadableStreamType")); + } + return type; + } + + function convertIteratorOptions(options, context) { + assertDictionary(options, context); + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; + } + + function convertPipeOptions(options, context) { + assertDictionary(options, context); + var preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + var preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + var signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, "".concat(context, " has member 'signal' that")); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal: signal + }; + } + function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError("".concat(context, " is not an AbortSignal.")); + } + } + + function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + var readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, "".concat(context, " has member 'readable' that")); + var writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, "".concat(context, " has member 'writable' that")); + return { readable: readable, writable: writable }; + } + + /** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ + var ReadableStream = /** @class */ (function () { + function ReadableStream(rawUnderlyingSource, rawStrategy) { + if (rawUnderlyingSource === void 0) { rawUnderlyingSource = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + var highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + Object.defineProperty(ReadableStream.prototype, "locked", { + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get: function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + ReadableStream.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + }; + ReadableStream.prototype.getReader = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + var options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + }; + ReadableStream.prototype.pipeThrough = function (rawTransform, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + var transform = convertReadableWritablePair(rawTransform, 'First parameter'); + var options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + var promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + }; + ReadableStream.prototype.pipeTo = function (destination, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith("Parameter 1 is required in 'pipeTo'."); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError("ReadableStream.prototype.pipeTo's first argument must be a WritableStream")); + } + var options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + }; + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + ReadableStream.prototype.tee = function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + var branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + }; + ReadableStream.prototype.values = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + var options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + }; + ReadableStream.prototype[SymbolAsyncIterator] = function (options) { + // Stub implementation, overridden below + return this.values(options); + }; + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + ReadableStream.from = function (asyncIterable) { + return ReadableStreamFrom(asyncIterable); + }; + return ReadableStream; + }()); + Object.defineProperties(ReadableStream, { + from: { enumerable: true } + }); + Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(ReadableStream.from, 'from'); + setFunctionName(ReadableStream.prototype.cancel, 'cancel'); + setFunctionName(ReadableStream.prototype.getReader, 'getReader'); + setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); + setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); + setFunctionName(ReadableStream.prototype.tee, 'tee'); + setFunctionName(ReadableStream.prototype.values, 'values'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStream', + configurable: true + }); + } + Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true + }); + // Abstract operations for the ReadableStream. + // Throws if and only if startAlgorithm throws. + function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + // Throws if and only if startAlgorithm throws. + function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; + } + function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; + } + function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; + } + function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; + } + // ReadableStream API exposed for controllers. + function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + var reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._closeSteps(undefined); + }); + } + var sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); + } + function ReadableStreamClose(stream) { + stream._state = 'closed'; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._closeSteps(); + }); + } + } + function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + } + // Helper functions for the ReadableStream. + function streamBrandCheckException$1(name) { + return new TypeError("ReadableStream.prototype.".concat(name, " can only be used on a ReadableStream")); + } + + function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; + } + + // The size function must not have a prototype property nor be a constructor + var byteLengthSizeFunction = function (chunk) { + return chunk.byteLength; + }; + setFunctionName(byteLengthSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ + var ByteLengthQueuingStrategy = /** @class */ (function () { + function ByteLengthQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + }, + enumerable: false, + configurable: true + }); + return ByteLengthQueuingStrategy; + }()); + Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); + } + // Helper functions for the ByteLengthQueuingStrategy. + function byteLengthBrandCheckException(name) { + return new TypeError("ByteLengthQueuingStrategy.prototype.".concat(name, " can only be used on a ByteLengthQueuingStrategy")); + } + function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; + } + + // The size function must not have a prototype property nor be a constructor + var countSizeFunction = function () { + return 1; + }; + setFunctionName(countSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of chunks. + * + * @public + */ + var CountQueuingStrategy = /** @class */ (function () { + function CountQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(CountQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(CountQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + }, + enumerable: false, + configurable: true + }); + return CountQueuingStrategy; + }()); + Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); + } + // Helper functions for the CountQueuingStrategy. + function countBrandCheckException(name) { + return new TypeError("CountQueuingStrategy.prototype.".concat(name, " can only be used on a CountQueuingStrategy")); + } + function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; + } + + function convertTransformer(original, context) { + assertDictionary(original, context); + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var flush = original === null || original === void 0 ? void 0 : original.flush; + var readableType = original === null || original === void 0 ? void 0 : original.readableType; + var start = original === null || original === void 0 ? void 0 : original.start; + var transform = original === null || original === void 0 ? void 0 : original.transform; + var writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, "".concat(context, " has member 'flush' that")), + readableType: readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, "".concat(context, " has member 'start' that")), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, "".concat(context, " has member 'transform' that")), + writableType: writableType + }; + } + function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; + } + function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; + } + function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; + } + function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; + } + + // Class TransformStream + /** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ + var TransformStream = /** @class */ (function () { + function TransformStream(rawTransformer, rawWritableStrategy, rawReadableStrategy) { + if (rawTransformer === void 0) { rawTransformer = {}; } + if (rawWritableStrategy === void 0) { rawWritableStrategy = {}; } + if (rawReadableStrategy === void 0) { rawReadableStrategy = {}; } + if (rawTransformer === undefined) { + rawTransformer = null; + } + var writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + var readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + var transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + var readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + var readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + var writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + var writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + var startPromise_resolve; + var startPromise = newPromise(function (resolve) { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + Object.defineProperty(TransformStream.prototype, "readable", { + /** + * The readable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(TransformStream.prototype, "writable", { + /** + * The writable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + }, + enumerable: false, + configurable: true + }); + return TransformStream; + }()); + Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStream', + configurable: true + }); + } + function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; + } + function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; + } + // This is a no-op if both sides are already errored. + function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); + } + function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); + } + function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } + } + function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(function (resolve) { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; + } + // Class TransformStreamDefaultController + /** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ + var TransformStreamDefaultController = /** @class */ (function () { + function TransformStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(TransformStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get: function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + var readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + }, + enumerable: false, + configurable: true + }); + TransformStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + TransformStreamDefaultController.prototype.error = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + }; + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + TransformStreamDefaultController.prototype.terminate = function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + }; + return TransformStreamDefaultController; + }()); + Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); + setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); + } + // Transform Stream Default Controller Abstract Operations + function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; + } + function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + var controller = Object.create(TransformStreamDefaultController.prototype); + var transformAlgorithm; + var flushAlgorithm; + var cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = function (chunk) { return transformer.transform(chunk, controller); }; + } + else { + transformAlgorithm = function (chunk) { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = function () { return transformer.flush(controller); }; + } + else { + flushAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = function (reason) { return transformer.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); + } + function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + function TransformStreamDefaultControllerEnqueue(controller, chunk) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + var backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } + } + function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); + } + function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + var transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, function (r) { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); + } + function TransformStreamDefaultControllerTerminate(controller) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + var error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); + } + // TransformStreamDefaultSink Algorithms + function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + var controller = stream._transformStreamController; + if (stream._backpressure) { + var backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, function () { + var writable = stream._writable; + var state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + } + function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + function TransformStreamDefaultSinkCloseAlgorithm(stream) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // TransformStreamDefaultSource Algorithms + function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; + } + function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + var writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // Helper functions for the TransformStreamDefaultController. + function defaultControllerBrandCheckException(name) { + return new TypeError("TransformStreamDefaultController.prototype.".concat(name, " can only be used on a TransformStreamDefaultController")); + } + function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + // Helper functions for the TransformStream. + function streamBrandCheckException(name) { + return new TypeError("TransformStream.prototype.".concat(name, " can only be used on a TransformStream")); + } + + var exports$1 = { + ReadableStream: ReadableStream, + ReadableStreamDefaultController: ReadableStreamDefaultController, + ReadableByteStreamController: ReadableByteStreamController, + ReadableStreamBYOBRequest: ReadableStreamBYOBRequest, + ReadableStreamDefaultReader: ReadableStreamDefaultReader, + ReadableStreamBYOBReader: ReadableStreamBYOBReader, + WritableStream: WritableStream, + WritableStreamDefaultController: WritableStreamDefaultController, + WritableStreamDefaultWriter: WritableStreamDefaultWriter, + ByteLengthQueuingStrategy: ByteLengthQueuingStrategy, + CountQueuingStrategy: CountQueuingStrategy, + TransformStream: TransformStream, + TransformStreamDefaultController: TransformStreamDefaultController + }; + // Add classes to global scope + if (typeof globals !== 'undefined') { + for (var prop in exports$1) { + if (Object.prototype.hasOwnProperty.call(exports$1, prop)) { + Object.defineProperty(globals, prop, { + value: exports$1[prop], + writable: true, + configurable: true + }); + } + } + } + + exports.ByteLengthQueuingStrategy = ByteLengthQueuingStrategy; + exports.CountQueuingStrategy = CountQueuingStrategy; + exports.ReadableByteStreamController = ReadableByteStreamController; + exports.ReadableStream = ReadableStream; + exports.ReadableStreamBYOBReader = ReadableStreamBYOBReader; + exports.ReadableStreamBYOBRequest = ReadableStreamBYOBRequest; + exports.ReadableStreamDefaultController = ReadableStreamDefaultController; + exports.ReadableStreamDefaultReader = ReadableStreamDefaultReader; + exports.TransformStream = TransformStream; + exports.TransformStreamDefaultController = TransformStreamDefaultController; + exports.WritableStream = WritableStream; + exports.WritableStreamDefaultController = WritableStreamDefaultController; + exports.WritableStreamDefaultWriter = WritableStreamDefaultWriter; + +})); +//# sourceMappingURL=polyfill.js.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.js.map b/node_modules/web-streams-polyfill/dist/polyfill.js.map new file mode 100644 index 0000000..d4aaa73 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.js.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.js","sources":["../src/stub/symbol.ts","../node_modules/tslib/tslib.es6.js","../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["/// \n\nconst SymbolPolyfill: (description?: string) => symbol =\n typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ?\n Symbol :\n description => `Symbol(${description})` as any as symbol;\n\nexport default SymbolPolyfill;\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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(this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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r=e._controlledReadableByteStream._state;return"errored"===r?null:"closed"===r?0:e._strategyHWM-e._queueTotalSize}function nr(e,r){var t=e._pendingPullIntos.peek();if("closed"===e._controlledReadableByteStream._state){if(0!==r)throw new TypeError("bytesWritten must be 0 when calling respond() on a closed stream")}else{if(0===r)throw new TypeError("bytesWritten must be greater than 0 when calling respond() on a readable stream");if(t.bytesFilled+r>t.byteLength)throw new RangeError("bytesWritten out of range")}t.buffer=be(t.buffer),Ge(e,r)}function or(e,r){var t=e._pendingPullIntos.peek();if("closed"===e._controlledReadableByteStream._state){if(0!==r.byteLength)throw new TypeError("The view's length must be 0 when calling respondWithNewView() on a closed stream")}else if(0===r.byteLength)throw new TypeError("The view's length must be greater than 0 when calling respondWithNewView() on a readable stream");if(t.byteOffset+t.bytesFilled!==r.byteOffset)throw new RangeError("The region 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0:e.abort,n=null==e?void 0:e.close,o=null==e?void 0:e.start,a=null==e?void 0:e.type,i=null==e?void 0:e.write;return{abort:void 0===t?void 0:wr(t,e,"".concat(r," has member 'abort' that")),close:void 0===n?void 0:Rr(n,e,"".concat(r," has member 'close' that")),start:void 0===o?void 0:Tr(o,e,"".concat(r," has member 'start' that")),write:void 0===i?void 0:Pr(i,e,"".concat(r," has member 'write' that")),type:a}}(e,"First parameter");if(Wr(this),void 0!==n.type)throw new RangeError("Invalid type is specified");var o=vr(t);!function(e,r,t,n){var o,a,i,u,l=Object.create(Xr.prototype);o=void 0!==r.start?function(){return r.start(l)}:function(){};a=void 0!==r.write?function(e){return r.write(e,l)}:function(){return m(void 0)};i=void 0!==r.close?function(){return r.close()}:function(){return m(void 0)};u=void 0!==r.abort?function(e){return r.abort(e)}:function(){return m(void 0)};Kr(e,l,o,a,i,u,t,n)}(this,n,yr(t,1),o)}return Object.defineProperty(WritableStream.prototype,"locked",{get:function(){if(!jr(this))throw ot("locked");return Br(this)},enumerable:!1,configurable:!0}),WritableStream.prototype.abort=function(e){return void 0===e&&(e=void 0),jr(this)?Br(this)?_(new TypeError("Cannot abort a stream that already has a writer")):kr(this,e):_(ot("abort"))},WritableStream.prototype.close=function(){return jr(this)?Br(this)?_(new TypeError("Cannot close a stream that already has a writer")):Lr(this)?_(new TypeError("Cannot close an already-closing stream")):Ar(this):_(ot("close"))},WritableStream.prototype.getWriter=function(){if(!jr(this))throw ot("getWriter");return Or(this)},WritableStream}();function Or(e){return new xr(e)}function Wr(e){e._state="writable",e._storedError=void 0,e._writer=void 0,e._writableStreamController=void 0,e._writeRequests=new q,e._inFlightWriteRequest=void 0,e._closeRequest=void 0,e._inFlightCloseRequest=void 0,e._pendingAbortRequest=void 0,e._backpressure=!1}function jr(e){return!!s(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_writableStreamController")&&e instanceof Er)}function Br(e){return void 0!==e._writer}function kr(e,r){var t;if("closed"===e._state||"errored"===e._state)return m(void 0);e._writableStreamController._abortReason=r,null===(t=e._writableStreamController._abortController)||void 0===t||t.abort(r);var n=e._state;if("closed"===n||"errored"===n)return m(void 0);if(void 0!==e._pendingAbortRequest)return e._pendingAbortRequest._promise;var o=!1;"erroring"===n&&(o=!0,r=void 0);var a=h((function(t,n){e._pendingAbortRequest={_promise:void 0,_resolve:t,_reject:n,_reason:r,_wasAlreadyErroring:o}}));return e._pendingAbortRequest._promise=a,o||Ir(e,r),a}function Ar(e){var r=e._state;if("closed"===r||"errored"===r)return _(new TypeError("The stream (in ".concat(r," state) is not in the writable state and cannot be closed")));var t,n=h((function(r,t){var n={_resolve:r,_reject:t};e._closeRequest=n})),o=e._writer;return void 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0!==e._closeRequest&&(e._closeRequest._reject(e._storedError),e._closeRequest=void 0);var r=e._writer;void 0!==r&&ct(r,e._storedError)}function Mr(e,r){var t=e._writer;void 0!==t&&r!==e._backpressure&&(r?function(e){dt(e)}(t):mt(t)),e._backpressure=r}Object.defineProperties(Er.prototype,{abort:{enumerable:!0},close:{enumerable:!0},getWriter:{enumerable:!0},locked:{enumerable:!0}}),f(Er.prototype.abort,"abort"),f(Er.prototype.close,"close"),f(Er.prototype.getWriter,"getWriter"),"symbol"==typeof r.toStringTag&&Object.defineProperty(Er.prototype,r.toStringTag,{value:"WritableStream",configurable:!0});var xr=function(){function WritableStreamDefaultWriter(e){if(V(e,1,"WritableStreamDefaultWriter"),Cr(e,"First parameter"),Br(e))throw new TypeError("This stream has already been locked for exclusive writing by another writer");this._ownerWritableStream=e,e._writer=this;var r,t=e._state;if("writable"===t)!Lr(e)&&e._backpressure?dt(this):pt(this),lt(this);else if("erroring"===t)bt(this,e._storedError),lt(this);else if("closed"===t)pt(this),lt(r=this),ft(r);else{var n=e._storedError;bt(this,n),st(this,n)}}return Object.defineProperty(WritableStreamDefaultWriter.prototype,"closed",{get:function(){return Yr(this)?this._closedPromise:_(it("closed"))},enumerable:!1,configurable:!0}),Object.defineProperty(WritableStreamDefaultWriter.prototype,"desiredSize",{get:function(){if(!Yr(this))throw it("desiredSize");if(void 0===this._ownerWritableStream)throw ut("desiredSize");return function(e){var r=e._ownerWritableStream,t=r._state;if("errored"===t||"erroring"===t)return null;if("closed"===t)return 0;return $r(r._writableStreamController)}(this)},enumerable:!1,configurable:!0}),Object.defineProperty(WritableStreamDefaultWriter.prototype,"ready",{get:function(){return Yr(this)?this._readyPromise:_(it("ready"))},enumerable:!1,configurable:!0}),WritableStreamDefaultWriter.prototype.abort=function(e){return void 0===e&&(e=void 0),Yr(this)?void 0===this._ownerWritableStream?_(ut("abort")):function(e,r){return kr(e._ownerWritableStream,r)}(this,e):_(it("abort"))},WritableStreamDefaultWriter.prototype.close=function(){if(!Yr(this))return _(it("close"));var e=this._ownerWritableStream;return void 0===e?_(ut("close")):Lr(e)?_(new TypeError("Cannot close an already-closing stream")):Qr(this)},WritableStreamDefaultWriter.prototype.releaseLock=function(){if(!Yr(this))throw it("releaseLock");void 0!==this._ownerWritableStream&&Vr(this)},WritableStreamDefaultWriter.prototype.write=function(e){return void 0===e&&(e=void 0),Yr(this)?void 0===this._ownerWritableStream?_(ut("write to")):Ur(this,e):_(it("write"))},WritableStreamDefaultWriter}();function Yr(e){return!!s(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_ownerWritableStream")&&e instanceof xr)}function Qr(e){return Ar(e._ownerWritableStream)}function Nr(e,r){"pending"===e._closedPromiseState?ct(e,r):function(e,r){st(e,r)}(e,r)}function 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n=e._controlledWritableStream;if(!Lr(n)&&"writable"===n._state){Mr(n,tt(e))}et(e)}(n,r,o),i}Object.defineProperties(xr.prototype,{abort:{enumerable:!0},close:{enumerable:!0},releaseLock:{enumerable:!0},write:{enumerable:!0},closed:{enumerable:!0},desiredSize:{enumerable:!0},ready:{enumerable:!0}}),f(xr.prototype.abort,"abort"),f(xr.prototype.close,"close"),f(xr.prototype.releaseLock,"releaseLock"),f(xr.prototype.write,"write"),"symbol"==typeof r.toStringTag&&Object.defineProperty(xr.prototype,r.toStringTag,{value:"WritableStreamDefaultWriter",configurable:!0});var Gr={},Xr=function(){function WritableStreamDefaultController(){throw new TypeError("Illegal constructor")}return Object.defineProperty(WritableStreamDefaultController.prototype,"abortReason",{get:function(){if(!Jr(this))throw at("abortReason");return this._abortReason},enumerable:!1,configurable:!0}),Object.defineProperty(WritableStreamDefaultController.prototype,"signal",{get:function(){if(!Jr(this))throw at("signal");if(void 0===this._abortController)throw new TypeError("WritableStreamDefaultController.prototype.signal is not supported");return this._abortController.signal},enumerable:!1,configurable:!0}),WritableStreamDefaultController.prototype.error=function(e){if(void 0===e&&(e=void 0),!Jr(this))throw at("error");"writable"===this._controlledWritableStream._state&&nt(this,e)},WritableStreamDefaultController.prototype[E]=function(e){var r=this._abortAlgorithm(e);return Zr(this),r},WritableStreamDefaultController.prototype[O]=function(){Oe(this)},WritableStreamDefaultController}();function Jr(e){return!!s(e)&&(!!Object.prototype.hasOwnProperty.call(e,"_controlledWritableStream")&&e instanceof Xr)}function Kr(e,r,t,n,o,a,i,u){r._controlledWritableStream=e,e._writableStreamController=r,r._queue=void 0,r._queueTotalSize=void 0,Oe(r),r._abortReason=void 0,r._abortController=function(){if(qr)return new AbortController}(),r._started=!1,r._strategySizeAlgorithm=u,r._strategyHWM=i,r._writeAlgorithm=n,r._closeAlgorithm=o,r._abortAlgorithm=a;var l=tt(r);Mr(e,l),v(m(t()),(function(){return r._started=!0,et(r),null}),(function(t){return r._started=!0,zr(e,t),null}))}function Zr(e){e._writeAlgorithm=void 0,e._closeAlgorithm=void 0,e._abortAlgorithm=void 0,e._strategySizeAlgorithm=void 0}function $r(e){return e._strategyHWM-e._queueTotalSize}function et(e){var r=e._controlledWritableStream;if(e._started&&void 0===r._inFlightWriteRequest)if("erroring"!==r._state){if(0!==e._queue.length){var t=e._queue.peek().value;t===Gr?function(e){var r=e._controlledWritableStream;(function(e){e._inFlightCloseRequest=e._closeRequest,e._closeRequest=void 0})(r),qe(e);var t=e._closeAlgorithm();Zr(e),v(t,(function(){return function(e){e._inFlightCloseRequest._resolve(void 0),e._inFlightCloseRequest=void 0,"erroring"===e._state&&(e._storedError=void 0,void 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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n var _, done = false;\r\n for (var i = decorators.length - 1; i >= 0; i--) {\r\n var context = {};\r\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n if (kind === \"accessor\") {\r\n if (result === void 0) continue;\r\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n if (_ = accept(result.get)) descriptor.get = _;\r\n if (_ = accept(result.set)) descriptor.set = _;\r\n if (_ = accept(result.init)) initializers.unshift(_);\r\n }\r\n else if (_ = accept(result)) {\r\n if (kind === \"field\") initializers.unshift(_);\r\n else descriptor[key] = _;\r\n }\r\n }\r\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n var useValue = arguments.length > 2;\r\n for (var i = 0; i < initializers.length; i++) {\r\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n }\r\n return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/polyfill.mjs b/node_modules/web-streams-polyfill/dist/polyfill.mjs new file mode 100644 index 0000000..f5b3740 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.mjs @@ -0,0 +1,4991 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +/// +var SymbolPolyfill = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? + Symbol : + function (description) { return "Symbol(".concat(description, ")"); }; + +/****************************************************************************** +Copyright (c) Microsoft Corporation. + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH +REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, +INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM +LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. +***************************************************************************** */ +/* global Reflect, Promise, SuppressedError, Symbol */ + + +function __generator(thisArg, body) { + var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; + return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; + function verb(n) { return function (v) { return step([n, v]); }; } + function step(op) { + if (f) throw new TypeError("Generator is already executing."); + while (g && (g = 0, op[0] && (_ = 0)), _) try { + if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t; + if (y = 0, t) op = [op[0] & 2, t.value]; + switch (op[0]) { + case 0: case 1: t = op; break; + case 4: _.label++; return { value: op[1], done: false }; + case 5: _.label++; y = op[1]; op = [0]; continue; + case 7: op = _.ops.pop(); _.trys.pop(); continue; + default: + if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } + if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } + if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } + if (t[2]) _.ops.pop(); + _.trys.pop(); continue; + } + op = body.call(thisArg, _); + } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } + if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; + } +} + +function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); +} + +function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); +} + +function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } +} + +function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } +} + +function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } +} + +typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; +}; + +function noop() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +var rethrowAssertionErrorRejection = noop; +function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } +} + +var originalPromise = Promise; +var originalPromiseThen = Promise.prototype.then; +var originalPromiseReject = Promise.reject.bind(originalPromise); +// https://webidl.spec.whatwg.org/#a-new-promise +function newPromise(executor) { + return new originalPromise(executor); +} +// https://webidl.spec.whatwg.org/#a-promise-resolved-with +function promiseResolvedWith(value) { + return newPromise(function (resolve) { return resolve(value); }); +} +// https://webidl.spec.whatwg.org/#a-promise-rejected-with +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned +// from that handler. To prevent this, return null instead of void from all handlers. +// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +var _queueMicrotask = function (callback) { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + var resolvedPromise_1 = promiseResolvedWith(undefined); + _queueMicrotask = function (cb) { return PerformPromiseThen(resolvedPromise_1, cb); }; + } + return _queueMicrotask(callback); +}; +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +var QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +var SimpleQueue = /** @class */ (function () { + function SimpleQueue() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + Object.defineProperty(SimpleQueue.prototype, "length", { + get: function () { + return this._size; + }, + enumerable: false, + configurable: true + }); + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + SimpleQueue.prototype.push = function (element) { + var oldBack = this._back; + var newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + }; + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + SimpleQueue.prototype.shift = function () { // must not be called on an empty queue + var oldFront = this._front; + var newFront = oldFront; + var oldCursor = this._cursor; + var newCursor = oldCursor + 1; + var elements = oldFront._elements; + var element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + }; + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + SimpleQueue.prototype.forEach = function (callback) { + var i = this._cursor; + var node = this._front; + var elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + }; + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + SimpleQueue.prototype.peek = function () { // must not be called on an empty queue + var front = this._front; + var cursor = this._cursor; + return front._elements[cursor]; + }; + return SimpleQueue; +}()); + +var AbortSteps = SymbolPolyfill('[[AbortSteps]]'); +var ErrorSteps = SymbolPolyfill('[[ErrorSteps]]'); +var CancelSteps = SymbolPolyfill('[[CancelSteps]]'); +var PullSteps = SymbolPolyfill('[[PullSteps]]'); +var ReleaseSteps = SymbolPolyfill('[[ReleaseSteps]]'); + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + var stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + var stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise(function (resolve, reject) { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +var NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +var MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError("".concat(context, " is not an object.")); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError("".concat(context, " is not a function.")); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError("".concat(context, " is not an object.")); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError("Parameter ".concat(position, " is required in '").concat(context, "'.")); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError("".concat(field, " is required in '").concat(context, "'.")); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + var lowerBound = 0; + var upperBound = Number.MAX_SAFE_INTEGER; + var x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError("".concat(context, " is not a finite number")); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError("".concat(context, " is outside the accepted range of ").concat(lowerBound, " to ").concat(upperBound, ", inclusive")); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError("".concat(context, " is not a ReadableStream.")); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + var reader = stream._reader; + var readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +var ReadableStreamDefaultReader = /** @class */ (function () { + function ReadableStreamDefaultReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamDefaultReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamDefaultReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + ReadableStreamDefaultReader.prototype.read = function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function () { return resolvePromise({ value: undefined, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamDefaultReader.prototype.releaseLock = function () { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + }; + return ReadableStreamDefaultReader; +}()); +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); +setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); +} +function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError("ReadableStreamDefaultReader.prototype.".concat(name, " can only be used on a ReadableStreamDefaultReader")); +} + +var _a$1, _b, _c; +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +var TransferArrayBuffer = function (O) { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = function (buffer) { return buffer.transfer(); }; + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = function (buffer) { return structuredClone(buffer, { transfer: [buffer] }); }; + } + else { + // Not implemented correctly + TransferArrayBuffer = function (buffer) { return buffer; }; + } + return TransferArrayBuffer(O); +}; +var IsDetachedBuffer = function (O) { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = function (buffer) { return buffer.detached; }; + } + else { + // Not implemented correctly + IsDetachedBuffer = function (buffer) { return buffer.byteLength === 0; }; + } + return IsDetachedBuffer(O); +}; +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + var length = end - begin; + var slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} +function GetMethod(receiver, prop) { + var func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError("".concat(String(prop), " is not a function")); + } + return func; +} +function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + var _a; + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + var syncIterable = (_a = {}, + _a[SymbolPolyfill.iterator] = function () { return syncIteratorRecord.iterator; }, + _a); + // Create an async generator function and immediately invoke it. + var asyncIterator = (function () { + return __asyncGenerator(this, arguments, function () { + return __generator(this, function (_a) { + switch (_a.label) { + case 0: return [5 /*yield**/, __values(__asyncDelegator(__asyncValues(syncIterable)))]; + case 1: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 2: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 3: return [2 /*return*/, _a.sent()]; + } + }); + }); + }()); + // Return as an async iterator record. + var nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod: nextMethod, done: false }; +} +// Aligns with core-js/modules/es.symbol.async-iterator.js +var SymbolAsyncIterator = (_c = (_a$1 = SymbolPolyfill.asyncIterator) !== null && _a$1 !== void 0 ? _a$1 : (_b = SymbolPolyfill.for) === null || _b === void 0 ? void 0 : _b.call(SymbolPolyfill, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; +function GetIterator(obj, hint, method) { + if (hint === void 0) { hint = 'sync'; } + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + var syncMethod = GetMethod(obj, SymbolPolyfill.iterator); + var syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, SymbolPolyfill.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + var iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + var nextMethod = iterator.next; + return { iterator: iterator, nextMethod: nextMethod, done: false }; +} +function IteratorNext(iteratorRecord) { + var result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; +} +function IteratorComplete(iterResult) { + return Boolean(iterResult.done); +} +function IteratorValue(iterResult) { + return iterResult.value; +} + +/// +var _a; +// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. +var AsyncIteratorPrototype = (_a = {}, + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + _a[SymbolAsyncIterator] = function () { + return this; + }, + _a); +Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + +/// +var ReadableStreamAsyncIteratorImpl = /** @class */ (function () { + function ReadableStreamAsyncIteratorImpl(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + ReadableStreamAsyncIteratorImpl.prototype.next = function () { + var _this = this; + var nextSteps = function () { return _this._nextSteps(); }; + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + }; + ReadableStreamAsyncIteratorImpl.prototype.return = function (value) { + var _this = this; + var returnSteps = function () { return _this._returnSteps(value); }; + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + }; + ReadableStreamAsyncIteratorImpl.prototype._nextSteps = function () { + var _this = this; + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + var reader = this._reader; + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { + _this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(function () { return resolvePromise({ value: chunk, done: false }); }); + }, + _closeSteps: function () { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: function (reason) { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + }; + ReadableStreamAsyncIteratorImpl.prototype._returnSteps = function (value) { + if (this._isFinished) { + return Promise.resolve({ value: value, done: true }); + } + this._isFinished = true; + var reader = this._reader; + if (!this._preventCancel) { + var result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, function () { return ({ value: value, done: true }); }); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value: value, done: true }); + }; + return ReadableStreamAsyncIteratorImpl; +}()); +var ReadableStreamAsyncIteratorPrototype = { + next: function () { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return: function (value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + var reader = AcquireReadableStreamDefaultReader(stream); + var impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + var iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError("ReadableStreamAsyncIterator.".concat(name, " can only be used on a ReadableSteamAsyncIterator")); +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +var NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + var buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + var pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value: value, size: size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + var pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +function isDataViewConstructor(ctor) { + return ctor === DataView; +} +function isDataView(view) { + return isDataViewConstructor(view.constructor); +} +function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +var ReadableStreamBYOBRequest = /** @class */ (function () { + function ReadableStreamBYOBRequest() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamBYOBRequest.prototype, "view", { + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get: function () { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + }, + enumerable: false, + configurable: true + }); + ReadableStreamBYOBRequest.prototype.respond = function (bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError("The BYOB request's buffer has been detached and so cannot be used as a response"); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + }; + ReadableStreamBYOBRequest.prototype.respondWithNewView = function (view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + }; + return ReadableStreamBYOBRequest; +}()); +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); +setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); +} +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +var ReadableByteStreamController = /** @class */ (function () { + function ReadableByteStreamController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableByteStreamController.prototype, "byobRequest", { + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ReadableByteStreamController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableByteStreamController.prototype.close = function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be closed")); + } + ReadableByteStreamControllerClose(this); + }; + ReadableByteStreamController.prototype.enqueue = function (chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError("chunk's buffer must have non-zero byteLength"); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be enqueued to")); + } + ReadableByteStreamControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableByteStreamController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + }; + /** @internal */ + ReadableByteStreamController.prototype[CancelSteps] = function (reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableByteStreamController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + var autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + var buffer = void 0; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + }; + /** @internal */ + ReadableByteStreamController.prototype[ReleaseSteps] = function () { + if (this._pendingPullIntos.length > 0) { + var firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + }; + return ReadableByteStreamController; +}()); +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableByteStreamController.prototype.close, 'close'); +setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableByteStreamController.prototype.error, 'error'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); +} +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableByteStreamControllerError(controller, e); + return null; + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + var done = false; + if (stream._state === 'closed') { + done = true; + } + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + var bytesFilled = pullIntoDescriptor.bytesFilled; + var elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer: buffer, byteOffset: byteOffset, byteLength: byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + var clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); +} +function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + var maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + var maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + var totalBytesToCopyRemaining = maxBytesToCopy; + var ready = false; + var remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + var maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + var queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + var headOfQueue = queue.peek(); + var bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + var destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + var reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } +} +function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + var stream = controller._controlledReadableByteStream; + var ctor = view.constructor; + var elementSize = arrayBufferViewElementSize(ctor); + var byteOffset = view.byteOffset, byteLength = view.byteLength; + var minimumFill = min * elementSize; + var buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: buffer.byteLength, + byteOffset: byteOffset, + byteLength: byteLength, + bytesFilled: 0, + minimumFill: minimumFill, + elementSize: elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + var emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + var pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + var remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + var end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + var descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + var buffer = chunk.buffer, byteOffset = chunk.byteOffset, byteLength = chunk.byteLength; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + var transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + var entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + var view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + var byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + var state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + var viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableByteStreamControllerError(controller, r); + return null; + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + var controller = Object.create(ReadableByteStreamController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = function () { return underlyingByteSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingByteSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingByteSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + var autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBRequest.prototype.".concat(name, " can only be used on a ReadableStreamBYOBRequest")); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError("ReadableByteStreamController.prototype.".concat(name, " can only be used on a ReadableByteStreamController")); +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + var mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, "".concat(context, " has member 'mode' that")) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = "".concat(mode); + if (mode !== 'byob') { + throw new TypeError("".concat(context, " '").concat(mode, "' is not a valid enumeration value for ReadableStreamReaderMode")); + } + return mode; +} +function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + var min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, "".concat(context, " has member 'min' that")) + }; +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + var reader = stream._reader; + var readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +var ReadableStreamBYOBReader = /** @class */ (function () { + function ReadableStreamBYOBReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamBYOBReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamBYOBReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + ReadableStreamBYOBReader.prototype.read = function (view, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError("view's buffer must have non-zero byteLength")); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + var options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + var min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readIntoRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function (chunk) { return resolvePromise({ value: chunk, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamBYOBReader.prototype.releaseLock = function () { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + }; + return ReadableStreamBYOBReader; +}()); +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); +setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } +} +function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); +} +function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBReader.prototype.".concat(name, " can only be used on a ReadableStreamBYOBReader")); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + var highWaterMark = strategy.highWaterMark; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + var size = strategy.size; + if (!size) { + return function () { return 1; }; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + var size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, "".concat(context, " has member 'size' that")) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return function (chunk) { return convertUnrestrictedDouble(fn(chunk)); }; +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + var abort = original === null || original === void 0 ? void 0 : original.abort; + var close = original === null || original === void 0 ? void 0 : original.close; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + var write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, "".concat(context, " has member 'abort' that")), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, "".concat(context, " has member 'close' that")), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, "".concat(context, " has member 'start' that")), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, "".concat(context, " has member 'write' that")), + type: type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return function () { return promiseCall(fn, original, []); }; +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError("".concat(context, " is not a WritableStream.")); + } +} + +function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} +var supportsAbortController = typeof AbortController === 'function'; +/** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ +function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +var WritableStream = /** @class */ (function () { + function WritableStream(rawUnderlyingSink, rawStrategy) { + if (rawUnderlyingSink === void 0) { rawUnderlyingSink = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + var type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + Object.defineProperty(WritableStream.prototype, "locked", { + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get: function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + WritableStream.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + }; + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + WritableStream.prototype.close = function () { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + }; + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + WritableStream.prototype.getWriter = function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + }; + return WritableStream; +}()); +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(WritableStream.prototype.abort, 'abort'); +setFunctionName(WritableStream.prototype.close, 'close'); +setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStream', + configurable: true + }); +} +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + var controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + var wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + var promise = newPromise(function (resolve, reject) { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError("The stream (in ".concat(state, " state) is not in the writable state and cannot be closed"))); + } + var promise = newPromise(function (resolve, reject) { + var closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + var writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + var promise = newPromise(function (resolve, reject) { + var writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + var state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + var controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + var writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + var storedError = stream._storedError; + stream._writeRequests.forEach(function (writeRequest) { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, function () { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, function (reason) { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + var state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + var writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +var WritableStreamDefaultWriter = /** @class */ (function () { + function WritableStreamDefaultWriter(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + var state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + var storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + Object.defineProperty(WritableStreamDefaultWriter.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "desiredSize", { + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "ready", { + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + WritableStreamDefaultWriter.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + }; + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + WritableStreamDefaultWriter.prototype.close = function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + }; + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + WritableStreamDefaultWriter.prototype.releaseLock = function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + }; + WritableStreamDefaultWriter.prototype.write = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + }; + return WritableStreamDefaultWriter; +}()); +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); +setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); +setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); +setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); +} +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + var stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + var stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + var stream = writer._ownerWritableStream; + var releasedError = new TypeError("Writer was released and can no longer be used to monitor the stream's closedness"); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + var stream = writer._ownerWritableStream; + var controller = stream._writableStreamController; + var chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + var state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + var promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +var closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +var WritableStreamDefaultController = /** @class */ (function () { + function WritableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(WritableStreamDefaultController.prototype, "abortReason", { + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultController.prototype, "signal", { + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + WritableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + var state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + }; + /** @internal */ + WritableStreamDefaultController.prototype[AbortSteps] = function (reason) { + var result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + WritableStreamDefaultController.prototype[ErrorSteps] = function () { + ResetQueue(this); + }; + return WritableStreamDefaultController; +}()); +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); +} +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + var startResult = startAlgorithm(); + var startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, function () { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (r) { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + var controller = Object.create(WritableStreamDefaultController.prototype); + var startAlgorithm; + var writeAlgorithm; + var closeAlgorithm; + var abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = function () { return underlyingSink.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = function (chunk) { return underlyingSink.write(chunk, controller); }; + } + else { + writeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = function () { return underlyingSink.close(); }; + } + else { + closeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = function (reason) { return underlyingSink.abort(reason); }; + } + else { + abortAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + var stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + var stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + var state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + var value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + var stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + var sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, function () { + WritableStreamFinishInFlightClose(stream); + return null; + }, function (reason) { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + var stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + var sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, function () { + WritableStreamFinishInFlightWrite(stream); + var state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (reason) { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + var desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + var stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError("WritableStream.prototype.".concat(name, " can only be used on a WritableStream")); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError("WritableStreamDefaultController.prototype.".concat(name, " can only be used on a WritableStreamDefaultController")); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError("WritableStreamDefaultWriter.prototype.".concat(name, " can only be used on a WritableStreamDefaultWriter")); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise(function (resolve, reject) { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise(function (resolve, reject) { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} + +/// +function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; +} +var globals = getGlobals(); + +/// +function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } +} +/** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ +function getFromGlobal() { + var ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; +} +/** + * Support: + * - All platforms + */ +function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + var ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; +} +// eslint-disable-next-line @typescript-eslint/no-redeclare +var DOMException = getFromGlobal() || createPolyfill(); + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + var reader = AcquireReadableStreamDefaultReader(source); + var writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + var shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + var currentWrite = promiseResolvedWith(undefined); + return newPromise(function (resolve, reject) { + var abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = function () { + var error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + var actions = []; + if (!preventAbort) { + actions.push(function () { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(function () { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(function () { return Promise.all(actions.map(function (action) { return action(); })); }, true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise(function (resolveLoop, rejectLoop) { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, function () { + return newPromise(function (resolveRead, rejectRead) { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: function (chunk) { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: function () { return resolveRead(true); }, + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, function (storedError) { + if (!preventAbort) { + shutdownWithAction(function () { return WritableStreamAbort(dest, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, function (storedError) { + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, function () { + if (!preventClose) { + shutdownWithAction(function () { return WritableStreamDefaultWriterCloseWithErrorPropagation(writer); }); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + var destClosed_1 = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, destClosed_1); }, true, destClosed_1); + } + else { + shutdown(true, destClosed_1); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + var oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, function () { return oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined; }); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), function () { return finalize(originalIsError, originalError); }, function (newError) { return finalize(true, newError); }); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), function () { return finalize(isError, error); }); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +var ReadableStreamDefaultController = /** @class */ (function () { + function ReadableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableStreamDefaultController.prototype.close = function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + }; + ReadableStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + }; + /** @internal */ + ReadableStreamDefaultController.prototype[CancelSteps] = function (reason) { + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableStreamDefaultController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableStream; + if (this._queue.length > 0) { + var chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + }; + /** @internal */ + ReadableStreamDefaultController.prototype[ReleaseSteps] = function () { + // Do nothing. + }; + return ReadableStreamDefaultController; +}()); +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); +setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); +} +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + var stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + var chunkSize = void 0; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + var stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + var state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + var state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + var controller = Object.create(ReadableStreamDefaultController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = function () { return underlyingSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError("ReadableStreamDefaultController.prototype.".concat(name, " can only be used on a ReadableStreamDefaultController")); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgain = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgain = false; + var chunk1 = chunk; + var chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, function (r) { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgainForBranch1 = false; + var readAgainForBranch2 = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, function (r) { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var chunk1 = chunk; + var chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + var byobBranch = forBranch2 ? branch2 : branch1; + var otherBranch = forBranch2 ? branch1 : branch2; + var readIntoRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + var clonedChunk = void 0; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function (chunk) { + reading = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; +} + +function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); +} +function ReadableStreamFromIterable(asyncIterable) { + var stream; + var iteratorRecord = GetIterator(asyncIterable, 'async'); + var startAlgorithm = noop; + function pullAlgorithm() { + var nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + var nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + var done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + var iterator = iteratorRecord.iterator; + var returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + var returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + var returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} +function ReadableStreamFromDefaultReader(reader) { + var stream; + var startAlgorithm = noop; + function pullAlgorithm() { + var readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, function (readResult) { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + var original = source; + var autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var pull = original === null || original === void 0 ? void 0 : original.pull; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, "".concat(context, " has member 'autoAllocateChunkSize' that")), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, "".concat(context, " has member 'pull' that")), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, "".concat(context, " has member 'start' that")), + type: type === undefined ? undefined : convertReadableStreamType(type, "".concat(context, " has member 'type' that")) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; +} +function convertReadableStreamType(type, context) { + type = "".concat(type); + if (type !== 'bytes') { + throw new TypeError("".concat(context, " '").concat(type, "' is not a valid enumeration value for ReadableStreamType")); + } + return type; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + var preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + var preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + var signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, "".concat(context, " has member 'signal' that")); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal: signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError("".concat(context, " is not an AbortSignal.")); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + var readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, "".concat(context, " has member 'readable' that")); + var writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, "".concat(context, " has member 'writable' that")); + return { readable: readable, writable: writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +var ReadableStream = /** @class */ (function () { + function ReadableStream(rawUnderlyingSource, rawStrategy) { + if (rawUnderlyingSource === void 0) { rawUnderlyingSource = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + var highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + Object.defineProperty(ReadableStream.prototype, "locked", { + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get: function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + ReadableStream.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + }; + ReadableStream.prototype.getReader = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + var options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + }; + ReadableStream.prototype.pipeThrough = function (rawTransform, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + var transform = convertReadableWritablePair(rawTransform, 'First parameter'); + var options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + var promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + }; + ReadableStream.prototype.pipeTo = function (destination, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith("Parameter 1 is required in 'pipeTo'."); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError("ReadableStream.prototype.pipeTo's first argument must be a WritableStream")); + } + var options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + }; + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + ReadableStream.prototype.tee = function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + var branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + }; + ReadableStream.prototype.values = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + var options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + }; + ReadableStream.prototype[SymbolAsyncIterator] = function (options) { + // Stub implementation, overridden below + return this.values(options); + }; + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + ReadableStream.from = function (asyncIterable) { + return ReadableStreamFrom(asyncIterable); + }; + return ReadableStream; +}()); +Object.defineProperties(ReadableStream, { + from: { enumerable: true } +}); +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(ReadableStream.from, 'from'); +setFunctionName(ReadableStream.prototype.cancel, 'cancel'); +setFunctionName(ReadableStream.prototype.getReader, 'getReader'); +setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); +setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); +setFunctionName(ReadableStream.prototype.tee, 'tee'); +setFunctionName(ReadableStream.prototype.values, 'values'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStream', + configurable: true + }); +} +Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + var reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._closeSteps(undefined); + }); + } + var sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._closeSteps(); + }); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError("ReadableStream.prototype.".concat(name, " can only be used on a ReadableStream")); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +var byteLengthSizeFunction = function (chunk) { + return chunk.byteLength; +}; +setFunctionName(byteLengthSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +var ByteLengthQueuingStrategy = /** @class */ (function () { + function ByteLengthQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + }, + enumerable: false, + configurable: true + }); + return ByteLengthQueuingStrategy; +}()); +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); +} +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError("ByteLengthQueuingStrategy.prototype.".concat(name, " can only be used on a ByteLengthQueuingStrategy")); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +var countSizeFunction = function () { + return 1; +}; +setFunctionName(countSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +var CountQueuingStrategy = /** @class */ (function () { + function CountQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(CountQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(CountQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + }, + enumerable: false, + configurable: true + }); + return CountQueuingStrategy; +}()); +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); +} +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError("CountQueuingStrategy.prototype.".concat(name, " can only be used on a CountQueuingStrategy")); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var flush = original === null || original === void 0 ? void 0 : original.flush; + var readableType = original === null || original === void 0 ? void 0 : original.readableType; + var start = original === null || original === void 0 ? void 0 : original.start; + var transform = original === null || original === void 0 ? void 0 : original.transform; + var writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, "".concat(context, " has member 'flush' that")), + readableType: readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, "".concat(context, " has member 'start' that")), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, "".concat(context, " has member 'transform' that")), + writableType: writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; +} +function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +var TransformStream = /** @class */ (function () { + function TransformStream(rawTransformer, rawWritableStrategy, rawReadableStrategy) { + if (rawTransformer === void 0) { rawTransformer = {}; } + if (rawWritableStrategy === void 0) { rawWritableStrategy = {}; } + if (rawReadableStrategy === void 0) { rawReadableStrategy = {}; } + if (rawTransformer === undefined) { + rawTransformer = null; + } + var writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + var readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + var transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + var readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + var readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + var writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + var writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + var startPromise_resolve; + var startPromise = newPromise(function (resolve) { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + Object.defineProperty(TransformStream.prototype, "readable", { + /** + * The readable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(TransformStream.prototype, "writable", { + /** + * The writable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + }, + enumerable: false, + configurable: true + }); + return TransformStream; +}()); +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStream', + configurable: true + }); +} +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); +} +function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(function (resolve) { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +var TransformStreamDefaultController = /** @class */ (function () { + function TransformStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(TransformStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get: function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + var readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + }, + enumerable: false, + configurable: true + }); + TransformStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + TransformStreamDefaultController.prototype.error = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + }; + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + TransformStreamDefaultController.prototype.terminate = function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + }; + return TransformStreamDefaultController; +}()); +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); +setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); +} +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + var controller = Object.create(TransformStreamDefaultController.prototype); + var transformAlgorithm; + var flushAlgorithm; + var cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = function (chunk) { return transformer.transform(chunk, controller); }; + } + else { + transformAlgorithm = function (chunk) { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = function () { return transformer.flush(controller); }; + } + else { + flushAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = function (reason) { return transformer.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + var backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + var transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, function (r) { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + var error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + var controller = stream._transformStreamController; + if (stream._backpressure) { + var backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, function () { + var writable = stream._writable; + var state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + var writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError("TransformStreamDefaultController.prototype.".concat(name, " can only be used on a TransformStreamDefaultController")); +} +function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError("TransformStream.prototype.".concat(name, " can only be used on a TransformStream")); +} + +var exports = { + ReadableStream: ReadableStream, + ReadableStreamDefaultController: ReadableStreamDefaultController, + ReadableByteStreamController: ReadableByteStreamController, + ReadableStreamBYOBRequest: ReadableStreamBYOBRequest, + ReadableStreamDefaultReader: ReadableStreamDefaultReader, + ReadableStreamBYOBReader: ReadableStreamBYOBReader, + WritableStream: WritableStream, + WritableStreamDefaultController: WritableStreamDefaultController, + WritableStreamDefaultWriter: WritableStreamDefaultWriter, + ByteLengthQueuingStrategy: ByteLengthQueuingStrategy, + CountQueuingStrategy: CountQueuingStrategy, + TransformStream: TransformStream, + TransformStreamDefaultController: TransformStreamDefaultController +}; +// Add classes to global scope +if (typeof globals !== 'undefined') { + for (var prop in exports) { + if (Object.prototype.hasOwnProperty.call(exports, prop)) { + Object.defineProperty(globals, prop, { + value: exports[prop], + writable: true, + configurable: true + }); + } + } +} + +export { ByteLengthQueuingStrategy, CountQueuingStrategy, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, TransformStream, TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter }; +//# sourceMappingURL=polyfill.mjs.map diff --git a/node_modules/web-streams-polyfill/dist/polyfill.mjs.map b/node_modules/web-streams-polyfill/dist/polyfill.mjs.map new file mode 100644 index 0000000..a8b2b08 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/polyfill.mjs.map @@ -0,0 +1 @@ +{"version":3,"file":"polyfill.mjs","sources":["../src/stub/symbol.ts","../node_modules/tslib/tslib.es6.js","../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts","../src/polyfill.ts"],"sourcesContent":["/// \n\nconst SymbolPolyfill: (description?: string) => symbol =\n typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ?\n Symbol :\n description => `Symbol(${description})` as any as symbol;\n\nexport default SymbolPolyfill;\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? 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(function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a TransformStream`);\n}\n","import {\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n ReadableByteStreamController,\n ReadableStream,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultController,\n ReadableStreamDefaultReader,\n TransformStream,\n TransformStreamDefaultController,\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter\n} from './ponyfill';\nimport { globals } from './globals';\n\n// Export\nexport * from './ponyfill';\n\nconst exports = {\n ReadableStream,\n ReadableStreamDefaultController,\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader,\n\n WritableStream,\n WritableStreamDefaultController,\n WritableStreamDefaultWriter,\n\n ByteLengthQueuingStrategy,\n CountQueuingStrategy,\n\n TransformStream,\n TransformStreamDefaultController\n};\n\n// Add classes to global scope\nif (typeof 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es2018.js b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.js new file mode 100644 index 0000000..75ddde2 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.js @@ -0,0 +1,4737 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.WebStreamsPolyfill = {})); +})(this, (function (exports) { 'use strict'; + + function noop() { + return undefined; + } + + function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + const rethrowAssertionErrorRejection = noop; + function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } + } + + const originalPromise = Promise; + const originalPromiseThen = Promise.prototype.then; + const originalPromiseReject = Promise.reject.bind(originalPromise); + // https://webidl.spec.whatwg.org/#a-new-promise + function newPromise(executor) { + return new originalPromise(executor); + } + // https://webidl.spec.whatwg.org/#a-promise-resolved-with + function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); + } + // https://webidl.spec.whatwg.org/#a-promise-rejected-with + function promiseRejectedWith(reason) { + return originalPromiseReject(reason); + } + function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); + } + // Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned + // from that handler. To prevent this, return null instead of void from all handlers. + // http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it + function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); + } + function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); + } + function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); + } + function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); + } + function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); + } + let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); + }; + function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); + } + function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } + } + + // Original from Chromium + // https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js + const QUEUE_MAX_ARRAY_SIZE = 16384; + /** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ + class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } + } + + const AbortSteps = Symbol('[[AbortSteps]]'); + const ErrorSteps = Symbol('[[ErrorSteps]]'); + const CancelSteps = Symbol('[[CancelSteps]]'); + const PullSteps = Symbol('[[PullSteps]]'); + const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + + function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } + } + // A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state + // check. + function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); + } + function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; + } + // Helper functions for the readers. + function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); + } + function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); + } + function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); + } + function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); + } + function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill + const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); + }; + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill + const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); + }; + + // https://heycam.github.io/webidl/#idl-dictionaries + function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; + } + function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } + } + // https://heycam.github.io/webidl/#idl-callback-functions + function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } + } + // https://heycam.github.io/webidl/#idl-object + function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } + } + function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } + } + function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } + } + // https://heycam.github.io/webidl/#idl-unrestricted-double + function convertUnrestrictedDouble(value) { + return Number(value); + } + function censorNegativeZero(x) { + return x === 0 ? 0 : x; + } + function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); + } + // https://heycam.github.io/webidl/#idl-unsigned-long-long + function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; + } + + function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); + } + function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; + } + function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; + } + /** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); + setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; + } + function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } + } + function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); + } + + /// + /* eslint-disable @typescript-eslint/no-empty-function */ + const AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () { }).prototype); + + /// + class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } + } + const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } + }; + Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); + // Abstract operations for the ReadableStream. + function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; + } + function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } + } + // Helper functions for the ReadableStream. + function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill + const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; + }; + + var _a, _b, _c; + function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); + } + function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); + } + let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); + }; + let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); + }; + function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; + } + function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; + } + function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (async function* () { + return yield* syncIterable; + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; + } + // Aligns with core-js/modules/es.symbol.async-iterator.js + const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; + function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; + } + function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; + } + function IteratorComplete(iterResult) { + return Boolean(iterResult.done); + } + function IteratorValue(iterResult) { + return iterResult.value; + } + + function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; + } + function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); + } + + function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; + } + function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; + } + function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; + } + function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; + } + + function isDataViewConstructor(ctor) { + return ctor === DataView; + } + function isDataView(view) { + return isDataViewConstructor(view.constructor); + } + function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; + } + + /** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ + class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } + } + Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); + setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); + } + /** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ + class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } + } + Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableByteStreamController.prototype.close, 'close'); + setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableByteStreamController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); + } + // Abstract operations for the ReadableByteStreamController. + function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; + } + function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; + } + function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); + } + function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); + } + function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } + } + function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); + } + function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; + } + function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); + } + function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; + } + function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; + } + function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + } + function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; + } + function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } + } + function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; + } + function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + // A client of ReadableByteStreamController may use these functions directly to bypass state check. + function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + } + function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; + } + function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); + } + function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); + } + function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); + } + function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); + } + function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; + } + // Helper functions for the ReadableStreamBYOBRequest. + function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); + } + // Helper functions for the ReadableByteStreamController. + function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); + } + + function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; + } + function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; + } + function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); + } + function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; + } + function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; + } + /** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); + setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; + } + function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } + } + function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamBYOBReader. + function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); + } + + function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; + } + function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; + } + + function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; + } + function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); + } + + function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; + } + function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); + } + function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + + function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } + } + + function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } + } + const supportsAbortController = typeof AbortController === 'function'; + /** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ + function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; + } + + /** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ + class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } + } + Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(WritableStream.prototype.abort, 'abort'); + setFunctionName(WritableStream.prototype.close, 'close'); + setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); + } + // Abstract operations for the WritableStream. + function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); + } + // Throws if and only if startAlgorithm throws. + function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; + } + function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; + } + function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; + } + function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; + } + function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; + } + // WritableStream API exposed for controllers. + function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; + } + function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); + } + function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } + } + function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); + } + function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; + } + function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); + } + function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } + } + function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); + } + // TODO(ricea): Fix alphabetical order. + function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; + } + function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); + } + function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } + } + function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; + } + /** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ + class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } + } + Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } + }); + setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); + setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); + setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); + setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); + } + // Abstract operations for the WritableStreamDefaultWriter. + function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; + } + // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. + function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); + } + function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); + } + function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); + } + function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); + } + function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; + } + function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; + } + const closeSentinel = {}; + /** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ + class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } + } + Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); + } + // Abstract operations implementing interface required by the WritableStream. + function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; + } + function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); + } + function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + } + // ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. + function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } + } + function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; + } + function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + // Abstract operations for the WritableStreamDefaultController. + function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } + } + function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } + } + function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; + } + // A client of WritableStreamDefaultController may use these functions directly to bypass state check. + function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); + } + // Helper functions for the WritableStream. + function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); + } + // Helper functions for the WritableStreamDefaultController. + function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); + } + // Helper functions for the WritableStreamDefaultWriter. + function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); + } + function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); + } + function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); + } + function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); + } + function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); + } + function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; + } + function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; + } + function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; + } + function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); + } + function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); + } + function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; + } + function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); + } + function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; + } + + /// + function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; + } + const globals = getGlobals(); + + /// + function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } + } + /** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ + function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; + } + /** + * Support: + * - All platforms + */ + function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; + } + // eslint-disable-next-line @typescript-eslint/no-redeclare + const DOMException = getFromGlobal() || createPolyfill(); + + function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); + } + + /** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ + class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } + } + Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); + setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); + } + // Abstract operations for the ReadableStreamDefaultController. + function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; + } + function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); + } + function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + // A client of ReadableStreamDefaultController may use these functions directly to bypass state check. + function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + } + function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + // This is used in the implementation of TransformStream. + function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; + } + function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; + } + function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); + } + function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + } + // Helper functions for the ReadableStreamDefaultController. + function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); + } + + function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); + } + function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; + } + function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; + } + + function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; + } + + function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); + } + function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + + function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; + } + function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; + } + + function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; + } + + function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; + } + function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } + } + + function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; + } + + /** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ + class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } + } + Object.defineProperties(ReadableStream, { + from: { enumerable: true } + }); + Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(ReadableStream.from, 'from'); + setFunctionName(ReadableStream.prototype.cancel, 'cancel'); + setFunctionName(ReadableStream.prototype.getReader, 'getReader'); + setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); + setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); + setFunctionName(ReadableStream.prototype.tee, 'tee'); + setFunctionName(ReadableStream.prototype.values, 'values'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); + } + Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true + }); + // Abstract operations for the ReadableStream. + // Throws if and only if startAlgorithm throws. + function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + // Throws if and only if startAlgorithm throws. + function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; + } + function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; + } + function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; + } + function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; + } + // ReadableStream API exposed for controllers. + function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); + } + function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } + } + function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + } + // Helper functions for the ReadableStream. + function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); + } + + function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; + } + + // The size function must not have a prototype property nor be a constructor + const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; + }; + setFunctionName(byteLengthSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ + class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } + } + Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); + } + // Helper functions for the ByteLengthQueuingStrategy. + function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); + } + function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; + } + + // The size function must not have a prototype property nor be a constructor + const countSizeFunction = () => { + return 1; + }; + setFunctionName(countSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of chunks. + * + * @public + */ + class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } + } + Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); + } + // Helper functions for the CountQueuingStrategy. + function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); + } + function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; + } + + function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; + } + function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + + // Class TransformStream + /** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ + class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } + } + Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); + } + function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; + } + function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; + } + // This is a no-op if both sides are already errored. + function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); + } + function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); + } + function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } + } + function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; + } + // Class TransformStreamDefaultController + /** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ + class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } + } + Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); + setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); + } + // Transform Stream Default Controller Abstract Operations + function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; + } + function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); + } + function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } + } + function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); + } + function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); + } + function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); + } + // TransformStreamDefaultSink Algorithms + function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + } + function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // TransformStreamDefaultSource Algorithms + function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; + } + function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // Helper functions for the TransformStreamDefaultController. + function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); + } + function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + // Helper functions for the TransformStream. + function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); + } + + exports.ByteLengthQueuingStrategy = ByteLengthQueuingStrategy; + exports.CountQueuingStrategy = CountQueuingStrategy; + exports.ReadableByteStreamController = ReadableByteStreamController; + exports.ReadableStream = ReadableStream; + exports.ReadableStreamBYOBReader = ReadableStreamBYOBReader; + exports.ReadableStreamBYOBRequest = ReadableStreamBYOBRequest; + exports.ReadableStreamDefaultController = ReadableStreamDefaultController; + exports.ReadableStreamDefaultReader = ReadableStreamDefaultReader; + exports.TransformStream = TransformStream; + exports.TransformStreamDefaultController = TransformStreamDefaultController; + exports.WritableStream = WritableStream; + exports.WritableStreamDefaultController = WritableStreamDefaultController; + exports.WritableStreamDefaultWriter = WritableStreamDefaultWriter; + +})); +//# sourceMappingURL=ponyfill.es2018.js.map diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es2018.js.map b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.js.map new file mode 100644 index 0000000..6d107ac --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.js.map @@ -0,0 +1 @@ +{"version":3,"file":"ponyfill.es2018.js","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/target/es2018/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/ecmascript.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/// \n\n/* eslint-disable @typescript-eslint/no-empty-function */\nexport const AsyncIteratorPrototype: AsyncIterable =\n Object.getPrototypeOf(Object.getPrototypeOf(async function* (): AsyncIterableIterator {}).prototype);\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. 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This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle 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transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return 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stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es2018.mjs b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.mjs new file mode 100644 index 0000000..431260f --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.mjs @@ -0,0 +1,4717 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +function noop() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +const rethrowAssertionErrorRejection = noop; +function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } +} + +const originalPromise = Promise; +const originalPromiseThen = Promise.prototype.then; +const originalPromiseReject = Promise.reject.bind(originalPromise); +// https://webidl.spec.whatwg.org/#a-new-promise +function newPromise(executor) { + return new originalPromise(executor); +} +// https://webidl.spec.whatwg.org/#a-promise-resolved-with +function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); +} +// https://webidl.spec.whatwg.org/#a-promise-rejected-with +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned +// from that handler. To prevent this, return null instead of void from all handlers. +// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); +}; +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +const QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } +} + +const AbortSteps = Symbol('[[AbortSteps]]'); +const ErrorSteps = Symbol('[[ErrorSteps]]'); +const CancelSteps = Symbol('[[CancelSteps]]'); +const PullSteps = Symbol('[[PullSteps]]'); +const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); +setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); +} +function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); +} + +/// +/* eslint-disable @typescript-eslint/no-empty-function */ +const AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () { }).prototype); + +/// +class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } +} +const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +var _a, _b, _c; +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); +}; +let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); +}; +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} +function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; +} +function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (async function* () { + return yield* syncIterable; + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; +} +// Aligns with core-js/modules/es.symbol.async-iterator.js +const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; +function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; +} +function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; +} +function IteratorComplete(iterResult) { + return Boolean(iterResult.done); +} +function IteratorValue(iterResult) { + return iterResult.value; +} + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +function isDataViewConstructor(ctor) { + return ctor === DataView; +} +function isDataView(view) { + return isDataViewConstructor(view.constructor); +} +function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } +} +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); +setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); +} +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } +} +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableByteStreamController.prototype.close, 'close'); +setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableByteStreamController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); +} +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); +} +function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } +} +function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; +} +function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); +setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } +} +function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); +} +function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } +} + +function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} +const supportsAbortController = typeof AbortController === 'function'; +/** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ +function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } +} +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(WritableStream.prototype.abort, 'abort'); +setFunctionName(WritableStream.prototype.close, 'close'); +setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); +} +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } +} +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); +setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); +setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); +setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); +} +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +const closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } +} +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); +} +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} + +/// +function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; +} +const globals = getGlobals(); + +/// +function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } +} +/** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ +function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; +} +/** + * Support: + * - All platforms + */ +function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; +} +// eslint-disable-next-line @typescript-eslint/no-redeclare +const DOMException = getFromGlobal() || createPolyfill(); + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } +} +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); +setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); +} +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; +} + +function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); +} +function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} +function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } +} +Object.defineProperties(ReadableStream, { + from: { enumerable: true } +}); +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(ReadableStream.from, 'from'); +setFunctionName(ReadableStream.prototype.cancel, 'cancel'); +setFunctionName(ReadableStream.prototype.getReader, 'getReader'); +setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); +setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); +setFunctionName(ReadableStream.prototype.tee, 'tee'); +setFunctionName(ReadableStream.prototype.values, 'values'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); +} +Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; +}; +setFunctionName(byteLengthSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } +} +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); +} +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +const countSizeFunction = () => { + return 1; +}; +setFunctionName(countSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } +} +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); +} +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} +function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } +} +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); +} +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); +} +function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } +} +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); +setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); +} +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); +} +function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); +} + +export { ByteLengthQueuingStrategy, CountQueuingStrategy, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, TransformStream, TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter }; +//# sourceMappingURL=ponyfill.es2018.mjs.map diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es2018.mjs.map b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.mjs.map new file mode 100644 index 0000000..0a16b7c --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es2018.mjs.map @@ -0,0 +1 @@ +{"version":3,"file":"ponyfill.es2018.mjs","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/target/es2018/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/ecmascript.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/// \n\n/* eslint-disable @typescript-eslint/no-empty-function */\nexport const AsyncIteratorPrototype: AsyncIterable =\n Object.getPrototypeOf(Object.getPrototypeOf(async function* (): AsyncIterableIterator {}).prototype);\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. 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This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle 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transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return 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stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. 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TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es6.js b/node_modules/web-streams-polyfill/dist/ponyfill.es6.js new file mode 100644 index 0000000..ed1e6db --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es6.js @@ -0,0 +1,4810 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.WebStreamsPolyfill = {})); +})(this, (function (exports) { 'use strict'; + + function noop() { + return undefined; + } + + function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + const rethrowAssertionErrorRejection = noop; + function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } + } + + const originalPromise = Promise; + const originalPromiseThen = Promise.prototype.then; + const originalPromiseReject = Promise.reject.bind(originalPromise); + // https://webidl.spec.whatwg.org/#a-new-promise + function newPromise(executor) { + return new originalPromise(executor); + } + // https://webidl.spec.whatwg.org/#a-promise-resolved-with + function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); + } + // https://webidl.spec.whatwg.org/#a-promise-rejected-with + function promiseRejectedWith(reason) { + return originalPromiseReject(reason); + } + function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); + } + // Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned + // from that handler. To prevent this, return null instead of void from all handlers. + // http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it + function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); + } + function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); + } + function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); + } + function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); + } + function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); + } + let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); + }; + function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); + } + function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } + } + + // Original from Chromium + // https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js + const QUEUE_MAX_ARRAY_SIZE = 16384; + /** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ + class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } + } + + const AbortSteps = Symbol('[[AbortSteps]]'); + const ErrorSteps = Symbol('[[ErrorSteps]]'); + const CancelSteps = Symbol('[[CancelSteps]]'); + const PullSteps = Symbol('[[PullSteps]]'); + const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + + function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } + } + // A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state + // check. + function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); + } + function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; + } + // Helper functions for the readers. + function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); + } + function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); + } + function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); + } + function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); + } + function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill + const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); + }; + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill + const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); + }; + + // https://heycam.github.io/webidl/#idl-dictionaries + function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; + } + function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } + } + // https://heycam.github.io/webidl/#idl-callback-functions + function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } + } + // https://heycam.github.io/webidl/#idl-object + function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } + } + function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } + } + function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } + } + // https://heycam.github.io/webidl/#idl-unrestricted-double + function convertUnrestrictedDouble(value) { + return Number(value); + } + function censorNegativeZero(x) { + return x === 0 ? 0 : x; + } + function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); + } + // https://heycam.github.io/webidl/#idl-unsigned-long-long + function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; + } + + function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); + } + function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; + } + function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; + } + /** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); + setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; + } + function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } + } + function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); + } + + /****************************************************************************** + Copyright (c) Microsoft Corporation. + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + PERFORMANCE OF THIS SOFTWARE. + ***************************************************************************** */ + /* global Reflect, Promise, SuppressedError, Symbol */ + + + function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); + } + + function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); + } + + function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } + } + + function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } + } + + function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } + } + + typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; + }; + + var _a, _b, _c; + function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); + } + function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); + } + let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); + }; + let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); + }; + function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; + } + function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; + } + function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (function () { + return __asyncGenerator(this, arguments, function* () { + return yield __await(yield __await(yield* __asyncDelegator(__asyncValues(syncIterable)))); + }); + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; + } + // Aligns with core-js/modules/es.symbol.async-iterator.js + const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; + function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; + } + function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; + } + function IteratorComplete(iterResult) { + return Boolean(iterResult.done); + } + function IteratorValue(iterResult) { + return iterResult.value; + } + + /// + // We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. + const AsyncIteratorPrototype = { + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + [SymbolAsyncIterator]() { + return this; + } + }; + Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + + /// + class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } + } + const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } + }; + Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); + // Abstract operations for the ReadableStream. + function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; + } + function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } + } + // Helper functions for the ReadableStream. + function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill + const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; + }; + + function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; + } + function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); + } + + function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; + } + function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; + } + function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; + } + function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; + } + + function isDataViewConstructor(ctor) { + return ctor === DataView; + } + function isDataView(view) { + return isDataViewConstructor(view.constructor); + } + function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; + } + + /** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ + class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } + } + Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); + setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); + } + /** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ + class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } + } + Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableByteStreamController.prototype.close, 'close'); + setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableByteStreamController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); + } + // Abstract operations for the ReadableByteStreamController. + function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; + } + function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; + } + function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); + } + function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); + } + function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } + } + function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); + } + function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; + } + function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); + } + function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; + } + function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; + } + function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + } + function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; + } + function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } + } + function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; + } + function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + // A client of ReadableByteStreamController may use these functions directly to bypass state check. + function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + } + function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; + } + function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); + } + function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); + } + function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); + } + function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); + } + function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; + } + // Helper functions for the ReadableStreamBYOBRequest. + function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); + } + // Helper functions for the ReadableByteStreamController. + function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); + } + + function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; + } + function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; + } + function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); + } + function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; + } + function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; + } + /** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ + class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } + } + Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); + setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; + } + function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } + } + function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamBYOBReader. + function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); + } + + function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; + } + function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; + } + + function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; + } + function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); + } + + function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; + } + function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); + } + function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + + function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } + } + + function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } + } + const supportsAbortController = typeof AbortController === 'function'; + /** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ + function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; + } + + /** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ + class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } + } + Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(WritableStream.prototype.abort, 'abort'); + setFunctionName(WritableStream.prototype.close, 'close'); + setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); + } + // Abstract operations for the WritableStream. + function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); + } + // Throws if and only if startAlgorithm throws. + function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; + } + function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; + } + function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; + } + function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; + } + function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; + } + // WritableStream API exposed for controllers. + function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; + } + function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); + } + function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } + } + function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); + } + function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; + } + function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); + } + function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } + } + function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); + } + // TODO(ricea): Fix alphabetical order. + function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; + } + function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); + } + function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } + } + function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; + } + /** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ + class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } + } + Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } + }); + setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); + setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); + setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); + setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); + } + // Abstract operations for the WritableStreamDefaultWriter. + function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; + } + // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. + function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); + } + function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); + } + function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); + } + function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); + } + function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; + } + function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; + } + const closeSentinel = {}; + /** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ + class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } + } + Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); + } + // Abstract operations implementing interface required by the WritableStream. + function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; + } + function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); + } + function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + } + // ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. + function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } + } + function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; + } + function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + // Abstract operations for the WritableStreamDefaultController. + function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } + } + function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } + } + function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; + } + // A client of WritableStreamDefaultController may use these functions directly to bypass state check. + function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); + } + // Helper functions for the WritableStream. + function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); + } + // Helper functions for the WritableStreamDefaultController. + function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); + } + // Helper functions for the WritableStreamDefaultWriter. + function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); + } + function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); + } + function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); + } + function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); + } + function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); + } + function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; + } + function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; + } + function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; + } + function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); + } + function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); + } + function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; + } + function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); + } + function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; + } + + /// + function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; + } + const globals = getGlobals(); + + /// + function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } + } + /** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ + function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; + } + /** + * Support: + * - All platforms + */ + function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; + } + // eslint-disable-next-line @typescript-eslint/no-redeclare + const DOMException = getFromGlobal() || createPolyfill(); + + function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); + } + + /** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ + class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } + } + Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); + setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); + } + // Abstract operations for the ReadableStreamDefaultController. + function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; + } + function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); + } + function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + // A client of ReadableStreamDefaultController may use these functions directly to bypass state check. + function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + } + function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + // This is used in the implementation of TransformStream. + function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; + } + function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; + } + function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); + } + function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + } + // Helper functions for the ReadableStreamDefaultController. + function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); + } + + function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); + } + function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; + } + function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; + } + + function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; + } + + function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); + } + function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + + function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; + } + function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; + } + + function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; + } + + function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; + } + function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } + } + + function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; + } + + /** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ + class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } + } + Object.defineProperties(ReadableStream, { + from: { enumerable: true } + }); + Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(ReadableStream.from, 'from'); + setFunctionName(ReadableStream.prototype.cancel, 'cancel'); + setFunctionName(ReadableStream.prototype.getReader, 'getReader'); + setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); + setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); + setFunctionName(ReadableStream.prototype.tee, 'tee'); + setFunctionName(ReadableStream.prototype.values, 'values'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); + } + Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true + }); + // Abstract operations for the ReadableStream. + // Throws if and only if startAlgorithm throws. + function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + // Throws if and only if startAlgorithm throws. + function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; + } + function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; + } + function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; + } + function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; + } + // ReadableStream API exposed for controllers. + function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); + } + function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } + } + function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + } + // Helper functions for the ReadableStream. + function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); + } + + function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; + } + + // The size function must not have a prototype property nor be a constructor + const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; + }; + setFunctionName(byteLengthSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ + class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } + } + Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); + } + // Helper functions for the ByteLengthQueuingStrategy. + function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); + } + function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; + } + + // The size function must not have a prototype property nor be a constructor + const countSizeFunction = () => { + return 1; + }; + setFunctionName(countSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of chunks. + * + * @public + */ + class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } + } + Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); + } + // Helper functions for the CountQueuingStrategy. + function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); + } + function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; + } + + function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; + } + function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); + } + function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); + } + function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); + } + function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); + } + + // Class TransformStream + /** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ + class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } + } + Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } + }); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); + } + function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; + } + function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; + } + // This is a no-op if both sides are already errored. + function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); + } + function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); + } + function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } + } + function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; + } + // Class TransformStreamDefaultController + /** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ + class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } + } + Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); + setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); + if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); + } + // Transform Stream Default Controller Abstract Operations + function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; + } + function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); + } + function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } + } + function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); + } + function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); + } + function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); + } + // TransformStreamDefaultSink Algorithms + function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + } + function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // TransformStreamDefaultSource Algorithms + function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; + } + function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // Helper functions for the TransformStreamDefaultController. + function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); + } + function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + // Helper functions for the TransformStream. + function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); + } + + exports.ByteLengthQueuingStrategy = ByteLengthQueuingStrategy; + exports.CountQueuingStrategy = CountQueuingStrategy; + exports.ReadableByteStreamController = ReadableByteStreamController; + exports.ReadableStream = ReadableStream; + exports.ReadableStreamBYOBReader = ReadableStreamBYOBReader; + exports.ReadableStreamBYOBRequest = ReadableStreamBYOBRequest; + exports.ReadableStreamDefaultController = ReadableStreamDefaultController; + exports.ReadableStreamDefaultReader = ReadableStreamDefaultReader; + exports.TransformStream = TransformStream; + exports.TransformStreamDefaultController = TransformStreamDefaultController; + exports.WritableStream = WritableStream; + exports.WritableStreamDefaultController = WritableStreamDefaultController; + exports.WritableStreamDefaultWriter = WritableStreamDefaultWriter; + +})); +//# sourceMappingURL=ponyfill.es6.js.map diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es6.js.map b/node_modules/web-streams-polyfill/dist/ponyfill.es6.js.map new file mode 100644 index 0000000..1f0b187 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es6.js.map @@ -0,0 +1 @@ +{"version":3,"file":"ponyfill.es6.js","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../node_modules/tslib/tslib.es6.js","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? 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(function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStream.prototype.${name} can only be used on a 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs b/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs new file mode 100644 index 0000000..34a8758 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs @@ -0,0 +1,4790 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +function noop() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +const rethrowAssertionErrorRejection = noop; +function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } +} + +const originalPromise = Promise; +const originalPromiseThen = Promise.prototype.then; +const originalPromiseReject = Promise.reject.bind(originalPromise); +// https://webidl.spec.whatwg.org/#a-new-promise +function newPromise(executor) { + return new originalPromise(executor); +} +// https://webidl.spec.whatwg.org/#a-promise-resolved-with +function promiseResolvedWith(value) { + return newPromise(resolve => resolve(value)); +} +// https://webidl.spec.whatwg.org/#a-promise-rejected-with +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned +// from that handler. To prevent this, return null instead of void from all handlers. +// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +let _queueMicrotask = callback => { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + const resolvedPromise = promiseResolvedWith(undefined); + _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb); + } + return _queueMicrotask(callback); +}; +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +const QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +class SimpleQueue { + constructor() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + get length() { + return this._size; + } + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + push(element) { + const oldBack = this._back; + let newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + } + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + shift() { // must not be called on an empty queue + const oldFront = this._front; + let newFront = oldFront; + const oldCursor = this._cursor; + let newCursor = oldCursor + 1; + const elements = oldFront._elements; + const element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + } + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + forEach(callback) { + let i = this._cursor; + let node = this._front; + let elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + } + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + peek() { // must not be called on an empty queue + const front = this._front; + const cursor = this._cursor; + return front._elements[cursor]; + } +} + +const AbortSteps = Symbol('[[AbortSteps]]'); +const ErrorSteps = Symbol('[[ErrorSteps]]'); +const CancelSteps = Symbol('[[CancelSteps]]'); +const PullSteps = Symbol('[[PullSteps]]'); +const ReleaseSteps = Symbol('[[ReleaseSteps]]'); + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + const stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + const stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`)); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise((resolve, reject) => { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +const NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +const MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError(`${context} is not an object.`); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError(`${context} is not a function.`); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError(`${context} is not an object.`); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError(`Parameter ${position} is required in '${context}'.`); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError(`${field} is required in '${context}'.`); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + const lowerBound = 0; + const upperBound = Number.MAX_SAFE_INTEGER; + let x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError(`${context} is not a finite number`); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError(`${context} is not a ReadableStream.`); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + const reader = stream._reader; + const readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamDefaultReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read() { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: () => resolvePromise({ value: undefined, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); +setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); +} +function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`); +} + +/****************************************************************************** +Copyright (c) Microsoft Corporation. + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH +REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, +INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM +LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. +***************************************************************************** */ +/* global Reflect, Promise, SuppressedError, Symbol */ + + +function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); +} + +function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); +} + +function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } +} + +function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } +} + +function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } +} + +typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; +}; + +var _a, _b, _c; +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +let TransferArrayBuffer = (O) => { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = buffer => buffer.transfer(); + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] }); + } + else { + // Not implemented correctly + TransferArrayBuffer = buffer => buffer; + } + return TransferArrayBuffer(O); +}; +let IsDetachedBuffer = (O) => { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = buffer => buffer.detached; + } + else { + // Not implemented correctly + IsDetachedBuffer = buffer => buffer.byteLength === 0; + } + return IsDetachedBuffer(O); +}; +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + const length = end - begin; + const slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} +function GetMethod(receiver, prop) { + const func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError(`${String(prop)} is not a function`); + } + return func; +} +function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + const syncIterable = { + [Symbol.iterator]: () => syncIteratorRecord.iterator + }; + // Create an async generator function and immediately invoke it. + const asyncIterator = (function () { + return __asyncGenerator(this, arguments, function* () { + return yield __await(yield __await(yield* __asyncDelegator(__asyncValues(syncIterable)))); + }); + }()); + // Return as an async iterator record. + const nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod, done: false }; +} +// Aligns with core-js/modules/es.symbol.async-iterator.js +const SymbolAsyncIterator = (_c = (_a = Symbol.asyncIterator) !== null && _a !== void 0 ? _a : (_b = Symbol.for) === null || _b === void 0 ? void 0 : _b.call(Symbol, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; +function GetIterator(obj, hint = 'sync', method) { + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + const syncMethod = GetMethod(obj, Symbol.iterator); + const syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, Symbol.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + const iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + const nextMethod = iterator.next; + return { iterator, nextMethod, done: false }; +} +function IteratorNext(iteratorRecord) { + const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; +} +function IteratorComplete(iterResult) { + return Boolean(iterResult.done); +} +function IteratorValue(iterResult) { + return iterResult.value; +} + +/// +// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. +const AsyncIteratorPrototype = { + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + [SymbolAsyncIterator]() { + return this; + } +}; +Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + +/// +class ReadableStreamAsyncIteratorImpl { + constructor(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + next() { + const nextSteps = () => this._nextSteps(); + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + } + return(value) { + const returnSteps = () => this._returnSteps(value); + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + } + _nextSteps() { + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + const reader = this._reader; + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readRequest = { + _chunkSteps: chunk => { + this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(() => resolvePromise({ value: chunk, done: false })); + }, + _closeSteps: () => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: reason => { + this._ongoingPromise = undefined; + this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + } + _returnSteps(value) { + if (this._isFinished) { + return Promise.resolve({ value, done: true }); + } + this._isFinished = true; + const reader = this._reader; + if (!this._preventCancel) { + const result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, () => ({ value, done: true })); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value, done: true }); + } +} +const ReadableStreamAsyncIteratorPrototype = { + next() { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return(value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + const reader = AcquireReadableStreamDefaultReader(stream); + const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + const iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`); +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +const NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + const pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value, size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + const pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +function isDataViewConstructor(ctor) { + return ctor === DataView; +} +function isDataView(view) { + return isDataViewConstructor(view.constructor); +} +function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +class ReadableStreamBYOBRequest { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view() { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + } + respond(bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + } + respondWithNewView(view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + } +} +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); +setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); +} +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +class ReadableByteStreamController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`); + } + ReadableByteStreamControllerClose(this); + } + enqueue(chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError(`chunk's buffer must have non-zero byteLength`); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + const state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`); + } + ReadableByteStreamControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + const autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + let buffer; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + } + /** @internal */ + [ReleaseSteps]() { + if (this._pendingPullIntos.length > 0) { + const firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + } +} +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableByteStreamController.prototype.close, 'close'); +setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableByteStreamController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); +} +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableByteStreamControllerError(controller, e); + return null; + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + let done = false; + if (stream._state === 'closed') { + done = true; + } + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + const bytesFilled = pullIntoDescriptor.bytesFilled; + const elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer, byteOffset, byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + let clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); +} +function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + const maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + let totalBytesToCopyRemaining = maxBytesToCopy; + let ready = false; + const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + const maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + const queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + const headOfQueue = queue.peek(); + const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + const reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + const readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } +} +function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + const stream = controller._controlledReadableByteStream; + const ctor = view.constructor; + const elementSize = arrayBufferViewElementSize(ctor); + const { byteOffset, byteLength } = view; + const minimumFill = min * elementSize; + let buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + const pullIntoDescriptor = { + buffer, + bufferByteLength: buffer.byteLength, + byteOffset, + byteLength, + bytesFilled: 0, + minimumFill, + elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + const descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + const e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + const stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + const { buffer, byteOffset, byteLength } = chunk; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + const transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + const firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + const stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + const entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + const byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + const state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + const firstDescriptor = controller._pendingPullIntos.peek(); + const state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + const viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableByteStreamControllerError(controller, r); + return null; + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + const controller = Object.create(ReadableByteStreamController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = () => underlyingByteSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = () => underlyingByteSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingByteSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError(`ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`); +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + const mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = `${mode}`; + if (mode !== 'byob') { + throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`); + } + return mode; +} +function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + const min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, `${context} has member 'min' that`) + }; +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + const reader = stream._reader; + const readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + const reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +class ReadableStreamBYOBReader { + constructor(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed() { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason = undefined) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + } + read(view, rawOptions = {}) { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`)); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + let options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + const min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + let resolvePromise; + let rejectPromise; + const promise = newPromise((resolve, reject) => { + resolvePromise = resolve; + rejectPromise = reject; + }); + const readIntoRequest = { + _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }), + _closeSteps: chunk => resolvePromise({ value: chunk, done: true }), + _errorSteps: e => rejectPromise(e) + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + } + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock() { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + } +} +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); +setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + const stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } +} +function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + const e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); +} +function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError(`ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + const { highWaterMark } = strategy; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + const { size } = strategy; + if (!size) { + return () => 1; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + const size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return chunk => convertUnrestrictedDouble(fn(chunk)); +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + const abort = original === null || original === void 0 ? void 0 : original.abort; + const close = original === null || original === void 0 ? void 0 : original.close; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + const write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, `${context} has member 'abort' that`), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, `${context} has member 'close' that`), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, `${context} has member 'start' that`), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, `${context} has member 'write' that`), + type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return () => promiseCall(fn, original, []); +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError(`${context} is not a WritableStream.`); + } +} + +function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} +const supportsAbortController = typeof AbortController === 'function'; +/** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ +function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +class WritableStream { + constructor(rawUnderlyingSink = {}, rawStrategy = {}) { + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + const type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + } + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason = undefined) { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + } + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close() { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + } + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter() { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + } +} +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(WritableStream.prototype.abort, 'abort'); +setFunctionName(WritableStream.prototype.close, 'close'); +setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, { + value: 'WritableStream', + configurable: true + }); +} +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + const controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + let wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + const promise = newPromise((resolve, reject) => { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + const state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError(`The stream (in ${state} state) is not in the writable state and cannot be closed`)); + } + const promise = newPromise((resolve, reject) => { + const closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + const writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + const promise = newPromise((resolve, reject) => { + const writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + const state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + const controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + const writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + const storedError = stream._storedError; + stream._writeRequests.forEach(writeRequest => { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + const promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, () => { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, (reason) => { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + const state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + const writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + const writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +class WritableStreamDefaultWriter { + constructor(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + const state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + const storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + } + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + } + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + } + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + } + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close() { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + } + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock() { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + const stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + } + write(chunk = undefined) { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + } +} +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); +setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); +setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); +setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); +} +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + const stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + const stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + const stream = writer._ownerWritableStream; + const state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + const stream = writer._ownerWritableStream; + const releasedError = new TypeError(`Writer was released and can no longer be used to monitor the stream's closedness`); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + const stream = writer._ownerWritableStream; + const controller = stream._writableStreamController; + const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + const state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + const promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +const closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +class WritableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + } + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal() { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + } + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e = undefined) { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + const state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + } + /** @internal */ + [AbortSteps](reason) { + const result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [ErrorSteps]() { + ResetQueue(this); + } +} +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); +} +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + const startResult = startAlgorithm(); + const startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, () => { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, r => { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + const controller = Object.create(WritableStreamDefaultController.prototype); + let startAlgorithm; + let writeAlgorithm; + let closeAlgorithm; + let abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = () => underlyingSink.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = chunk => underlyingSink.write(chunk, controller); + } + else { + writeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = () => underlyingSink.close(); + } + else { + closeAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = reason => underlyingSink.abort(reason); + } + else { + abortAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + const stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + const stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + const state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + const value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + const stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + const sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, () => { + WritableStreamFinishInFlightClose(stream); + return null; + }, reason => { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + const stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + const sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, () => { + WritableStreamFinishInFlightWrite(stream); + const state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + const backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, reason => { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + const stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError(`WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError(`WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise((resolve, reject) => { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise((resolve, reject) => { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} + +/// +function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; +} +const globals = getGlobals(); + +/// +function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } +} +/** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ +function getFromGlobal() { + const ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; +} +/** + * Support: + * - All platforms + */ +function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + const ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; +} +// eslint-disable-next-line @typescript-eslint/no-redeclare +const DOMException = getFromGlobal() || createPolyfill(); + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + const reader = AcquireReadableStreamDefaultReader(source); + const writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + let shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + let currentWrite = promiseResolvedWith(undefined); + return newPromise((resolve, reject) => { + let abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = () => { + const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + const actions = []; + if (!preventAbort) { + actions.push(() => { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(() => { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise((resolveLoop, rejectLoop) => { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, () => { + return newPromise((resolveRead, rejectRead) => { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: chunk => { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: () => resolveRead(true), + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, storedError => { + if (!preventAbort) { + shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, storedError => { + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, () => { + if (!preventClose) { + shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer)); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed); + } + else { + shutdown(true, destClosed); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + const oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), () => finalize(originalIsError, originalError), newError => finalize(true, newError)); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error)); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +class ReadableStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + } + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close() { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + } + enqueue(chunk = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e = undefined) { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + } + /** @internal */ + [CancelSteps](reason) { + ResetQueue(this); + const result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + } + /** @internal */ + [PullSteps](readRequest) { + const stream = this._controlledReadableStream; + if (this._queue.length > 0) { + const chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + } + /** @internal */ + [ReleaseSteps]() { + // Do nothing. + } +} +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); +setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); +} +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + const pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, () => { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, e => { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + const stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + const stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + let chunkSize; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + const stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + const state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + const state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + const startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), () => { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, r => { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + const controller = Object.create(ReadableStreamDefaultController.prototype); + let startAlgorithm; + let pullAlgorithm; + let cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = () => underlyingSource.start(controller); + } + else { + startAlgorithm = () => undefined; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = () => underlyingSource.pull(controller); + } + else { + pullAlgorithm = () => promiseResolvedWith(undefined); + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = reason => underlyingSource.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError(`ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + const reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgain = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgain = false; + const chunk1 = chunk; + const chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, (r) => { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + let reader = AcquireReadableStreamDefaultReader(stream); + let reading = false; + let readAgainForBranch1 = false; + let readAgainForBranch2 = false; + let canceled1 = false; + let canceled2 = false; + let reason1; + let reason2; + let branch1; + let branch2; + let resolveCancelPromise; + const cancelPromise = newPromise(resolve => { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, r => { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + const readRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const chunk1 = chunk; + let chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: () => { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + const byobBranch = forBranch2 ? branch2 : branch1; + const otherBranch = forBranch2 ? branch1 : branch2; + const readIntoRequest = { + _chunkSteps: chunk => { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(() => { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + let clonedChunk; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: chunk => { + reading = false; + const byobCanceled = forBranch2 ? canceled2 : canceled1; + const otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: () => { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + const compositeReason = CreateArrayFromList([reason1, reason2]); + const cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; +} + +function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); +} +function ReadableStreamFromIterable(asyncIterable) { + let stream; + const iteratorRecord = GetIterator(asyncIterable, 'async'); + const startAlgorithm = noop; + function pullAlgorithm() { + let nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + const nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + const done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + const iterator = iteratorRecord.iterator; + let returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + let returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + const returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, iterResult => { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} +function ReadableStreamFromDefaultReader(reader) { + let stream; + const startAlgorithm = noop; + function pullAlgorithm() { + let readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, readResult => { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + const value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + const original = source; + const autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const pull = original === null || original === void 0 ? void 0 : original.pull; + const start = original === null || original === void 0 ? void 0 : original.start; + const type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, `${context} has member 'autoAllocateChunkSize' that`), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, `${context} has member 'cancel' that`), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, `${context} has member 'pull' that`), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, `${context} has member 'start' that`), + type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertReadableStreamType(type, context) { + type = `${type}`; + if (type !== 'bytes') { + throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`); + } + return type; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + const preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + const preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + const preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + const signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, `${context} has member 'signal' that`); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError(`${context} is not an AbortSignal.`); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + const readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, `${context} has member 'readable' that`); + const writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, `${context} has member 'writable' that`); + return { readable, writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +class ReadableStream { + constructor(rawUnderlyingSource = {}, rawStrategy = {}) { + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + const highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + const sizeAlgorithm = ExtractSizeAlgorithm(strategy); + const highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + } + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason = undefined) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + } + getReader(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + const options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + } + pipeThrough(rawTransform, rawOptions = {}) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + const transform = convertReadableWritablePair(rawTransform, 'First parameter'); + const options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + const promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + } + pipeTo(destination, rawOptions = {}) { + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)); + } + let options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + } + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee() { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + const branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + } + values(rawOptions = undefined) { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + const options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + } + [SymbolAsyncIterator](options) { + // Stub implementation, overridden below + return this.values(options); + } + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable) { + return ReadableStreamFrom(asyncIterable); + } +} +Object.defineProperties(ReadableStream, { + from: { enumerable: true } +}); +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(ReadableStream.from, 'from'); +setFunctionName(ReadableStream.prototype.cancel, 'cancel'); +setFunctionName(ReadableStream.prototype.getReader, 'getReader'); +setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); +setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); +setFunctionName(ReadableStream.prototype.tee, 'tee'); +setFunctionName(ReadableStream.prototype.values, 'values'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, { + value: 'ReadableStream', + configurable: true + }); +} +Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark = 1, sizeAlgorithm = () => 1) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + const stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + const controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + const reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + const readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(readIntoRequest => { + readIntoRequest._closeSteps(undefined); + }); + } + const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + const readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(readRequest => { + readRequest._closeSteps(); + }); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + const reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + const highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +const byteLengthSizeFunction = (chunk) => { + return chunk.byteLength; +}; +setFunctionName(byteLengthSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +class ByteLengthQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size() { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + } +} +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); +} +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +const countSizeFunction = () => { + return 1; +}; +setFunctionName(countSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +class CountQueuingStrategy { + constructor(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + } + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size() { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + } +} +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); +} +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + const cancel = original === null || original === void 0 ? void 0 : original.cancel; + const flush = original === null || original === void 0 ? void 0 : original.flush; + const readableType = original === null || original === void 0 ? void 0 : original.readableType; + const start = original === null || original === void 0 ? void 0 : original.start; + const transform = original === null || original === void 0 ? void 0 : original.transform; + const writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, `${context} has member 'cancel' that`), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, `${context} has member 'flush' that`), + readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, `${context} has member 'start' that`), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, `${context} has member 'transform' that`), + writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => promiseCall(fn, original, [controller]); +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return (controller) => reflectCall(fn, original, [controller]); +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return (chunk, controller) => promiseCall(fn, original, [chunk, controller]); +} +function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return (reason) => promiseCall(fn, original, [reason]); +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +class TransformStream { + constructor(rawTransformer = {}, rawWritableStrategy = {}, rawReadableStrategy = {}) { + if (rawTransformer === undefined) { + rawTransformer = null; + } + const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + const transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + let startPromise_resolve; + const startPromise = newPromise(resolve => { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + /** + * The readable side of the transform stream. + */ + get readable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + } + /** + * The writable side of the transform stream. + */ + get writable() { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + } +} +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, { + value: 'TransformStream', + configurable: true + }); +} +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); +} +function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(resolve => { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +class TransformStreamDefaultController { + constructor() { + throw new TypeError('Illegal constructor'); + } + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + const readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + } + enqueue(chunk = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + } + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason = undefined) { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + } + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate() { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + } +} +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); +setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); +if (typeof Symbol.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); +} +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + const controller = Object.create(TransformStreamDefaultController.prototype); + let transformAlgorithm; + let flushAlgorithm; + let cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = chunk => transformer.transform(chunk, controller); + } + else { + transformAlgorithm = chunk => { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = () => transformer.flush(controller); + } + else { + flushAlgorithm = () => promiseResolvedWith(undefined); + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = reason => transformer.cancel(reason); + } + else { + cancelAlgorithm = () => promiseResolvedWith(undefined); + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + const transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, r => { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + const stream = controller._controlledTransformStream; + const readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + const error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + const controller = stream._transformStreamController; + if (stream._backpressure) { + const backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, () => { + const writable = stream._writable; + const state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + const readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, () => { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + const controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + const writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise((resolve, reject) => { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + const cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, () => { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, r => { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError(`TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`); +} +function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError(`TransformStream.prototype.${name} can only be used on a TransformStream`); +} + +export { ByteLengthQueuingStrategy, CountQueuingStrategy, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, TransformStream, TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter }; +//# sourceMappingURL=ponyfill.es6.mjs.map diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs.map b/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs.map new file mode 100644 index 0000000..929200b --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs.map @@ -0,0 +1 @@ +{"version":3,"file":"ponyfill.es6.mjs","sources":["../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../node_modules/tslib/tslib.es6.js","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts"],"sourcesContent":["export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\r\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\r\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\r\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\r\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\r\n var _, done = false;\r\n for (var i = decorators.length - 1; i >= 0; i--) {\r\n var context = {};\r\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\r\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\r\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\r\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\r\n if (kind === \"accessor\") {\r\n if (result === void 0) continue;\r\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\r\n if (_ = accept(result.get)) descriptor.get = _;\r\n if (_ = accept(result.set)) descriptor.set = _;\r\n if (_ = accept(result.init)) initializers.unshift(_);\r\n }\r\n else if (_ = accept(result)) {\r\n if (kind === \"field\") initializers.unshift(_);\r\n else descriptor[key] = _;\r\n }\r\n }\r\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\r\n done = true;\r\n};\r\n\r\nexport function __runInitializers(thisArg, initializers, value) {\r\n var useValue = arguments.length > 2;\r\n for (var i = 0; i < initializers.length; i++) {\r\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\r\n }\r\n return useValue ? value : void 0;\r\n};\r\n\r\nexport function __propKey(x) {\r\n return typeof x === \"symbol\" ? x : \"\".concat(x);\r\n};\r\n\r\nexport function __setFunctionName(f, name, prefix) {\r\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\r\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\r\n};\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n var desc = Object.getOwnPropertyDescriptor(m, k);\r\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\r\n desc = { enumerable: true, get: function() { return m[k]; } };\r\n }\r\n Object.defineProperty(o, k2, desc);\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. 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This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle 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transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return 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stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. 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TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.js b/node_modules/web-streams-polyfill/dist/ponyfill.js new file mode 100644 index 0000000..68416d6 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.js @@ -0,0 +1,4983 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : + typeof define === 'function' && define.amd ? define(['exports'], factory) : + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.WebStreamsPolyfill = {})); +})(this, (function (exports) { 'use strict'; + + /// + var SymbolPolyfill = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? + Symbol : + function (description) { return "Symbol(".concat(description, ")"); }; + + /****************************************************************************** + Copyright (c) Microsoft Corporation. + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + PERFORMANCE OF THIS SOFTWARE. + ***************************************************************************** */ + /* global Reflect, Promise, SuppressedError, Symbol */ + + + function __generator(thisArg, body) { + var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; + return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; + function verb(n) { return function (v) { return step([n, v]); }; } + function step(op) { + if (f) throw new TypeError("Generator is already executing."); + while (g && (g = 0, op[0] && (_ = 0)), _) try { + if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t; + if (y = 0, t) op = [op[0] & 2, t.value]; + switch (op[0]) { + case 0: case 1: t = op; break; + case 4: _.label++; return { value: op[1], done: false }; + case 5: _.label++; y = op[1]; op = [0]; continue; + case 7: op = _.ops.pop(); _.trys.pop(); continue; + default: + if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } + if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } + if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } + if (t[2]) _.ops.pop(); + _.trys.pop(); continue; + } + op = body.call(thisArg, _); + } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } + if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; + } + } + + function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); + } + + function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); + } + + function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } + } + + function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } + } + + function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } + } + + typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; + }; + + function noop() { + return undefined; + } + + function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + var rethrowAssertionErrorRejection = noop; + function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } + } + + var originalPromise = Promise; + var originalPromiseThen = Promise.prototype.then; + var originalPromiseReject = Promise.reject.bind(originalPromise); + // https://webidl.spec.whatwg.org/#a-new-promise + function newPromise(executor) { + return new originalPromise(executor); + } + // https://webidl.spec.whatwg.org/#a-promise-resolved-with + function promiseResolvedWith(value) { + return newPromise(function (resolve) { return resolve(value); }); + } + // https://webidl.spec.whatwg.org/#a-promise-rejected-with + function promiseRejectedWith(reason) { + return originalPromiseReject(reason); + } + function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); + } + // Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned + // from that handler. To prevent this, return null instead of void from all handlers. + // http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it + function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); + } + function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); + } + function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); + } + function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); + } + function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); + } + var _queueMicrotask = function (callback) { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + var resolvedPromise_1 = promiseResolvedWith(undefined); + _queueMicrotask = function (cb) { return PerformPromiseThen(resolvedPromise_1, cb); }; + } + return _queueMicrotask(callback); + }; + function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); + } + function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } + } + + // Original from Chromium + // https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js + var QUEUE_MAX_ARRAY_SIZE = 16384; + /** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ + var SimpleQueue = /** @class */ (function () { + function SimpleQueue() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + Object.defineProperty(SimpleQueue.prototype, "length", { + get: function () { + return this._size; + }, + enumerable: false, + configurable: true + }); + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + SimpleQueue.prototype.push = function (element) { + var oldBack = this._back; + var newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + }; + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + SimpleQueue.prototype.shift = function () { // must not be called on an empty queue + var oldFront = this._front; + var newFront = oldFront; + var oldCursor = this._cursor; + var newCursor = oldCursor + 1; + var elements = oldFront._elements; + var element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + }; + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + SimpleQueue.prototype.forEach = function (callback) { + var i = this._cursor; + var node = this._front; + var elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + }; + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + SimpleQueue.prototype.peek = function () { // must not be called on an empty queue + var front = this._front; + var cursor = this._cursor; + return front._elements[cursor]; + }; + return SimpleQueue; + }()); + + var AbortSteps = SymbolPolyfill('[[AbortSteps]]'); + var ErrorSteps = SymbolPolyfill('[[ErrorSteps]]'); + var CancelSteps = SymbolPolyfill('[[CancelSteps]]'); + var PullSteps = SymbolPolyfill('[[PullSteps]]'); + var ReleaseSteps = SymbolPolyfill('[[ReleaseSteps]]'); + + function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } + } + // A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state + // check. + function ReadableStreamReaderGenericCancel(reader, reason) { + var stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); + } + function ReadableStreamReaderGenericRelease(reader) { + var stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; + } + // Helper functions for the readers. + function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise(function (resolve, reject) { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); + } + function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); + } + function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); + } + function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); + } + function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill + var NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); + }; + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill + var MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); + }; + + // https://heycam.github.io/webidl/#idl-dictionaries + function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; + } + function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError("".concat(context, " is not an object.")); + } + } + // https://heycam.github.io/webidl/#idl-callback-functions + function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError("".concat(context, " is not a function.")); + } + } + // https://heycam.github.io/webidl/#idl-object + function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; + } + function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError("".concat(context, " is not an object.")); + } + } + function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError("Parameter ".concat(position, " is required in '").concat(context, "'.")); + } + } + function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError("".concat(field, " is required in '").concat(context, "'.")); + } + } + // https://heycam.github.io/webidl/#idl-unrestricted-double + function convertUnrestrictedDouble(value) { + return Number(value); + } + function censorNegativeZero(x) { + return x === 0 ? 0 : x; + } + function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); + } + // https://heycam.github.io/webidl/#idl-unsigned-long-long + function convertUnsignedLongLongWithEnforceRange(value, context) { + var lowerBound = 0; + var upperBound = Number.MAX_SAFE_INTEGER; + var x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError("".concat(context, " is not a finite number")); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError("".concat(context, " is outside the accepted range of ").concat(lowerBound, " to ").concat(upperBound, ", inclusive")); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; + } + + function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError("".concat(context, " is not a ReadableStream.")); + } + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); + } + function ReadableStreamFulfillReadRequest(stream, chunk, done) { + var reader = stream._reader; + var readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; + } + function ReadableStreamHasDefaultReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; + } + /** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ + var ReadableStreamDefaultReader = /** @class */ (function () { + function ReadableStreamDefaultReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamDefaultReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamDefaultReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + ReadableStreamDefaultReader.prototype.read = function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function () { return resolvePromise({ value: undefined, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamDefaultReader.prototype.releaseLock = function () { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + }; + return ReadableStreamDefaultReader; + }()); + Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); + setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; + } + function ReadableStreamDefaultReaderRead(reader, readRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } + } + function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamDefaultReader. + function defaultReaderBrandCheckException(name) { + return new TypeError("ReadableStreamDefaultReader.prototype.".concat(name, " can only be used on a ReadableStreamDefaultReader")); + } + + var _a$1, _b, _c; + function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); + } + function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); + } + var TransferArrayBuffer = function (O) { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = function (buffer) { return buffer.transfer(); }; + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = function (buffer) { return structuredClone(buffer, { transfer: [buffer] }); }; + } + else { + // Not implemented correctly + TransferArrayBuffer = function (buffer) { return buffer; }; + } + return TransferArrayBuffer(O); + }; + var IsDetachedBuffer = function (O) { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = function (buffer) { return buffer.detached; }; + } + else { + // Not implemented correctly + IsDetachedBuffer = function (buffer) { return buffer.byteLength === 0; }; + } + return IsDetachedBuffer(O); + }; + function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + var length = end - begin; + var slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; + } + function GetMethod(receiver, prop) { + var func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError("".concat(String(prop), " is not a function")); + } + return func; + } + function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + var _a; + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + var syncIterable = (_a = {}, + _a[SymbolPolyfill.iterator] = function () { return syncIteratorRecord.iterator; }, + _a); + // Create an async generator function and immediately invoke it. + var asyncIterator = (function () { + return __asyncGenerator(this, arguments, function () { + return __generator(this, function (_a) { + switch (_a.label) { + case 0: return [5 /*yield**/, __values(__asyncDelegator(__asyncValues(syncIterable)))]; + case 1: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 2: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 3: return [2 /*return*/, _a.sent()]; + } + }); + }); + }()); + // Return as an async iterator record. + var nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod: nextMethod, done: false }; + } + // Aligns with core-js/modules/es.symbol.async-iterator.js + var SymbolAsyncIterator = (_c = (_a$1 = SymbolPolyfill.asyncIterator) !== null && _a$1 !== void 0 ? _a$1 : (_b = SymbolPolyfill.for) === null || _b === void 0 ? void 0 : _b.call(SymbolPolyfill, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; + function GetIterator(obj, hint, method) { + if (hint === void 0) { hint = 'sync'; } + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + var syncMethod = GetMethod(obj, SymbolPolyfill.iterator); + var syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, SymbolPolyfill.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + var iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + var nextMethod = iterator.next; + return { iterator: iterator, nextMethod: nextMethod, done: false }; + } + function IteratorNext(iteratorRecord) { + var result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; + } + function IteratorComplete(iterResult) { + return Boolean(iterResult.done); + } + function IteratorValue(iterResult) { + return iterResult.value; + } + + /// + var _a; + // We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. + var AsyncIteratorPrototype = (_a = {}, + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + _a[SymbolAsyncIterator] = function () { + return this; + }, + _a); + Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + + /// + var ReadableStreamAsyncIteratorImpl = /** @class */ (function () { + function ReadableStreamAsyncIteratorImpl(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + ReadableStreamAsyncIteratorImpl.prototype.next = function () { + var _this = this; + var nextSteps = function () { return _this._nextSteps(); }; + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + }; + ReadableStreamAsyncIteratorImpl.prototype.return = function (value) { + var _this = this; + var returnSteps = function () { return _this._returnSteps(value); }; + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + }; + ReadableStreamAsyncIteratorImpl.prototype._nextSteps = function () { + var _this = this; + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + var reader = this._reader; + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { + _this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(function () { return resolvePromise({ value: chunk, done: false }); }); + }, + _closeSteps: function () { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: function (reason) { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + }; + ReadableStreamAsyncIteratorImpl.prototype._returnSteps = function (value) { + if (this._isFinished) { + return Promise.resolve({ value: value, done: true }); + } + this._isFinished = true; + var reader = this._reader; + if (!this._preventCancel) { + var result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, function () { return ({ value: value, done: true }); }); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value: value, done: true }); + }; + return ReadableStreamAsyncIteratorImpl; + }()); + var ReadableStreamAsyncIteratorPrototype = { + next: function () { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return: function (value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } + }; + Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); + // Abstract operations for the ReadableStream. + function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + var reader = AcquireReadableStreamDefaultReader(stream); + var impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + var iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; + } + function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } + } + // Helper functions for the ReadableStream. + function streamAsyncIteratorBrandCheckException(name) { + return new TypeError("ReadableStreamAsyncIterator.".concat(name, " can only be used on a ReadableSteamAsyncIterator")); + } + + /// + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill + var NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; + }; + + function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; + } + function CloneAsUint8Array(O) { + var buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); + } + + function DequeueValue(container) { + var pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; + } + function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value: value, size: size }); + container._queueTotalSize += size; + } + function PeekQueueValue(container) { + var pair = container._queue.peek(); + return pair.value; + } + function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; + } + + function isDataViewConstructor(ctor) { + return ctor === DataView; + } + function isDataView(view) { + return isDataViewConstructor(view.constructor); + } + function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; + } + + /** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ + var ReadableStreamBYOBRequest = /** @class */ (function () { + function ReadableStreamBYOBRequest() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamBYOBRequest.prototype, "view", { + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get: function () { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + }, + enumerable: false, + configurable: true + }); + ReadableStreamBYOBRequest.prototype.respond = function (bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError("The BYOB request's buffer has been detached and so cannot be used as a response"); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + }; + ReadableStreamBYOBRequest.prototype.respondWithNewView = function (view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + }; + return ReadableStreamBYOBRequest; + }()); + Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); + setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); + } + /** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ + var ReadableByteStreamController = /** @class */ (function () { + function ReadableByteStreamController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableByteStreamController.prototype, "byobRequest", { + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ReadableByteStreamController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableByteStreamController.prototype.close = function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be closed")); + } + ReadableByteStreamControllerClose(this); + }; + ReadableByteStreamController.prototype.enqueue = function (chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError("chunk's buffer must have non-zero byteLength"); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be enqueued to")); + } + ReadableByteStreamControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableByteStreamController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + }; + /** @internal */ + ReadableByteStreamController.prototype[CancelSteps] = function (reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableByteStreamController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + var autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + var buffer = void 0; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + }; + /** @internal */ + ReadableByteStreamController.prototype[ReleaseSteps] = function () { + if (this._pendingPullIntos.length > 0) { + var firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + }; + return ReadableByteStreamController; + }()); + Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableByteStreamController.prototype.close, 'close'); + setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableByteStreamController.prototype.error, 'error'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); + } + // Abstract operations for the ReadableByteStreamController. + function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; + } + function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; + } + function ReadableByteStreamControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableByteStreamControllerError(controller, e); + return null; + }); + } + function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); + } + function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + var done = false; + if (stream._state === 'closed') { + done = true; + } + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } + } + function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + var bytesFilled = pullIntoDescriptor.bytesFilled; + var elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); + } + function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer: buffer, byteOffset: byteOffset, byteLength: byteLength }); + controller._queueTotalSize += byteLength; + } + function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + var clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); + } + function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + var maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + var maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + var totalBytesToCopyRemaining = maxBytesToCopy; + var ready = false; + var remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + var maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + var queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + var headOfQueue = queue.peek(); + var bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + var destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; + } + function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; + } + function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + } + function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; + } + function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + var reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } + } + function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + var stream = controller._controlledReadableByteStream; + var ctor = view.constructor; + var elementSize = arrayBufferViewElementSize(ctor); + var byteOffset = view.byteOffset, byteLength = view.byteLength; + var minimumFill = min * elementSize; + var buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: buffer.byteLength, + byteOffset: byteOffset, + byteLength: byteLength, + bytesFilled: 0, + minimumFill: minimumFill, + elementSize: elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + var emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + var pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } + } + function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + var remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + var end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerShiftPendingPullInto(controller) { + var descriptor = controller._pendingPullIntos.shift(); + return descriptor; + } + function ReadableByteStreamControllerShouldCallPull(controller) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + // A client of ReadableByteStreamController may use these functions directly to bypass state check. + function ReadableByteStreamControllerClose(controller) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + function ReadableByteStreamControllerEnqueue(controller, chunk) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + var buffer = chunk.buffer, byteOffset = chunk.byteOffset, byteLength = chunk.byteLength; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + var transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + function ReadableByteStreamControllerError(controller, e) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + var entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + var view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); + } + function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + var byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; + } + function ReadableByteStreamControllerGetDesiredSize(controller) { + var state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + function ReadableByteStreamControllerRespond(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); + } + function ReadableByteStreamControllerRespondWithNewView(controller, view) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + var viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); + } + function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableByteStreamControllerError(controller, r); + return null; + }); + } + function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + var controller = Object.create(ReadableByteStreamController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = function () { return underlyingByteSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingByteSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingByteSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + var autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); + } + function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; + } + // Helper functions for the ReadableStreamBYOBRequest. + function byobRequestBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBRequest.prototype.".concat(name, " can only be used on a ReadableStreamBYOBRequest")); + } + // Helper functions for the ReadableByteStreamController. + function byteStreamControllerBrandCheckException(name) { + return new TypeError("ReadableByteStreamController.prototype.".concat(name, " can only be used on a ReadableByteStreamController")); + } + + function convertReaderOptions(options, context) { + assertDictionary(options, context); + var mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, "".concat(context, " has member 'mode' that")) + }; + } + function convertReadableStreamReaderMode(mode, context) { + mode = "".concat(mode); + if (mode !== 'byob') { + throw new TypeError("".concat(context, " '").concat(mode, "' is not a valid enumeration value for ReadableStreamReaderMode")); + } + return mode; + } + function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + var min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, "".concat(context, " has member 'min' that")) + }; + } + + // Abstract operations for the ReadableStream. + function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); + } + // ReadableStream API exposed for controllers. + function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); + } + function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + var reader = stream._reader; + var readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } + } + function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; + } + function ReadableStreamHasBYOBReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; + } + /** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ + var ReadableStreamBYOBReader = /** @class */ (function () { + function ReadableStreamBYOBReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamBYOBReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamBYOBReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + ReadableStreamBYOBReader.prototype.read = function (view, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError("view's buffer must have non-zero byteLength")); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + var options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + var min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readIntoRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function (chunk) { return resolvePromise({ value: chunk, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamBYOBReader.prototype.releaseLock = function () { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + }; + return ReadableStreamBYOBReader; + }()); + Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } + }); + setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); + setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); + setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); + } + // Abstract operations for the readers. + function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; + } + function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } + } + function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._errorSteps(e); + }); + } + // Helper functions for the ReadableStreamBYOBReader. + function byobReaderBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBReader.prototype.".concat(name, " can only be used on a ReadableStreamBYOBReader")); + } + + function ExtractHighWaterMark(strategy, defaultHWM) { + var highWaterMark = strategy.highWaterMark; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; + } + function ExtractSizeAlgorithm(strategy) { + var size = strategy.size; + if (!size) { + return function () { return 1; }; + } + return size; + } + + function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + var size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, "".concat(context, " has member 'size' that")) + }; + } + function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return function (chunk) { return convertUnrestrictedDouble(fn(chunk)); }; + } + + function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + var abort = original === null || original === void 0 ? void 0 : original.abort; + var close = original === null || original === void 0 ? void 0 : original.close; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + var write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, "".concat(context, " has member 'abort' that")), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, "".concat(context, " has member 'close' that")), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, "".concat(context, " has member 'start' that")), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, "".concat(context, " has member 'write' that")), + type: type + }; + } + function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; + } + function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return function () { return promiseCall(fn, original, []); }; + } + function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; + } + function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; + } + + function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError("".concat(context, " is not a WritableStream.")); + } + } + + function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } + } + var supportsAbortController = typeof AbortController === 'function'; + /** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ + function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; + } + + /** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ + var WritableStream = /** @class */ (function () { + function WritableStream(rawUnderlyingSink, rawStrategy) { + if (rawUnderlyingSink === void 0) { rawUnderlyingSink = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + var type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + Object.defineProperty(WritableStream.prototype, "locked", { + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get: function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + WritableStream.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + }; + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + WritableStream.prototype.close = function () { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + }; + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + WritableStream.prototype.getWriter = function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + }; + return WritableStream; + }()); + Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(WritableStream.prototype.abort, 'abort'); + setFunctionName(WritableStream.prototype.close, 'close'); + setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStream', + configurable: true + }); + } + // Abstract operations for the WritableStream. + function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); + } + // Throws if and only if startAlgorithm throws. + function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + var controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; + } + function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; + } + function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; + } + function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + var wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + var promise = newPromise(function (resolve, reject) { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; + } + function WritableStreamClose(stream) { + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError("The stream (in ".concat(state, " state) is not in the writable state and cannot be closed"))); + } + var promise = newPromise(function (resolve, reject) { + var closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + var writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; + } + // WritableStream API exposed for controllers. + function WritableStreamAddWriteRequest(stream) { + var promise = newPromise(function (resolve, reject) { + var writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; + } + function WritableStreamDealWithRejection(stream, error) { + var state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); + } + function WritableStreamStartErroring(stream, reason) { + var controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + var writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } + } + function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + var storedError = stream._storedError; + stream._writeRequests.forEach(function (writeRequest) { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, function () { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, function (reason) { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); + } + function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; + } + function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); + } + function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + var state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } + } + function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); + } + // TODO(ricea): Fix alphabetical order. + function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; + } + function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; + } + function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); + } + function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } + } + function WritableStreamUpdateBackpressure(stream, backpressure) { + var writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; + } + /** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ + var WritableStreamDefaultWriter = /** @class */ (function () { + function WritableStreamDefaultWriter(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + var state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + var storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + Object.defineProperty(WritableStreamDefaultWriter.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "desiredSize", { + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "ready", { + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + WritableStreamDefaultWriter.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + }; + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + WritableStreamDefaultWriter.prototype.close = function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + }; + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + WritableStreamDefaultWriter.prototype.releaseLock = function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + }; + WritableStreamDefaultWriter.prototype.write = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + }; + return WritableStreamDefaultWriter; + }()); + Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } + }); + setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); + setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); + setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); + setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); + } + // Abstract operations for the WritableStreamDefaultWriter. + function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; + } + // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. + function WritableStreamDefaultWriterAbort(writer, reason) { + var stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); + } + function WritableStreamDefaultWriterClose(writer) { + var stream = writer._ownerWritableStream; + return WritableStreamClose(stream); + } + function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); + } + function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } + } + function WritableStreamDefaultWriterGetDesiredSize(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); + } + function WritableStreamDefaultWriterRelease(writer) { + var stream = writer._ownerWritableStream; + var releasedError = new TypeError("Writer was released and can no longer be used to monitor the stream's closedness"); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; + } + function WritableStreamDefaultWriterWrite(writer, chunk) { + var stream = writer._ownerWritableStream; + var controller = stream._writableStreamController; + var chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + var state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + var promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; + } + var closeSentinel = {}; + /** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ + var WritableStreamDefaultController = /** @class */ (function () { + function WritableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(WritableStreamDefaultController.prototype, "abortReason", { + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultController.prototype, "signal", { + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + WritableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + var state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + }; + /** @internal */ + WritableStreamDefaultController.prototype[AbortSteps] = function (reason) { + var result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + WritableStreamDefaultController.prototype[ErrorSteps] = function () { + ResetQueue(this); + }; + return WritableStreamDefaultController; + }()); + Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); + } + // Abstract operations implementing interface required by the WritableStream. + function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; + } + function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + var startResult = startAlgorithm(); + var startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, function () { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (r) { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); + } + function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + var controller = Object.create(WritableStreamDefaultController.prototype); + var startAlgorithm; + var writeAlgorithm; + var closeAlgorithm; + var abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = function () { return underlyingSink.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = function (chunk) { return underlyingSink.write(chunk, controller); }; + } + else { + writeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = function () { return underlyingSink.close(); }; + } + else { + closeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = function (reason) { return underlyingSink.abort(reason); }; + } + else { + abortAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + } + // ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. + function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } + } + function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; + } + function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + var stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + } + // Abstract operations for the WritableStreamDefaultController. + function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + var stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + var state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + var value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } + } + function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } + } + function WritableStreamDefaultControllerProcessClose(controller) { + var stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + var sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, function () { + WritableStreamFinishInFlightClose(stream); + return null; + }, function (reason) { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + var stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + var sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, function () { + WritableStreamFinishInFlightWrite(stream); + var state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (reason) { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); + } + function WritableStreamDefaultControllerGetBackpressure(controller) { + var desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; + } + // A client of WritableStreamDefaultController may use these functions directly to bypass state check. + function WritableStreamDefaultControllerError(controller, error) { + var stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); + } + // Helper functions for the WritableStream. + function streamBrandCheckException$2(name) { + return new TypeError("WritableStream.prototype.".concat(name, " can only be used on a WritableStream")); + } + // Helper functions for the WritableStreamDefaultController. + function defaultControllerBrandCheckException$2(name) { + return new TypeError("WritableStreamDefaultController.prototype.".concat(name, " can only be used on a WritableStreamDefaultController")); + } + // Helper functions for the WritableStreamDefaultWriter. + function defaultWriterBrandCheckException(name) { + return new TypeError("WritableStreamDefaultWriter.prototype.".concat(name, " can only be used on a WritableStreamDefaultWriter")); + } + function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); + } + function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise(function (resolve, reject) { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); + } + function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); + } + function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); + } + function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; + } + function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; + } + function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise(function (resolve, reject) { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; + } + function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); + } + function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); + } + function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; + } + function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); + } + function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); + } + function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; + } + + /// + function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; + } + var globals = getGlobals(); + + /// + function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } + } + /** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ + function getFromGlobal() { + var ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; + } + /** + * Support: + * - All platforms + */ + function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + var ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; + } + // eslint-disable-next-line @typescript-eslint/no-redeclare + var DOMException = getFromGlobal() || createPolyfill(); + + function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + var reader = AcquireReadableStreamDefaultReader(source); + var writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + var shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + var currentWrite = promiseResolvedWith(undefined); + return newPromise(function (resolve, reject) { + var abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = function () { + var error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + var actions = []; + if (!preventAbort) { + actions.push(function () { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(function () { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(function () { return Promise.all(actions.map(function (action) { return action(); })); }, true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise(function (resolveLoop, rejectLoop) { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, function () { + return newPromise(function (resolveRead, rejectRead) { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: function (chunk) { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: function () { return resolveRead(true); }, + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, function (storedError) { + if (!preventAbort) { + shutdownWithAction(function () { return WritableStreamAbort(dest, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, function (storedError) { + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, function () { + if (!preventClose) { + shutdownWithAction(function () { return WritableStreamDefaultWriterCloseWithErrorPropagation(writer); }); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + var destClosed_1 = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, destClosed_1); }, true, destClosed_1); + } + else { + shutdown(true, destClosed_1); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + var oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, function () { return oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined; }); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), function () { return finalize(originalIsError, originalError); }, function (newError) { return finalize(true, newError); }); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), function () { return finalize(isError, error); }); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); + } + + /** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ + var ReadableStreamDefaultController = /** @class */ (function () { + function ReadableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableStreamDefaultController.prototype.close = function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + }; + ReadableStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + }; + /** @internal */ + ReadableStreamDefaultController.prototype[CancelSteps] = function (reason) { + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableStreamDefaultController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableStream; + if (this._queue.length > 0) { + var chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + }; + /** @internal */ + ReadableStreamDefaultController.prototype[ReleaseSteps] = function () { + // Do nothing. + }; + return ReadableStreamDefaultController; + }()); + Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); + setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); + } + // Abstract operations for the ReadableStreamDefaultController. + function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; + } + function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); + } + function ReadableStreamDefaultControllerShouldCallPull(controller) { + var stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; + } + function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; + } + // A client of ReadableStreamDefaultController may use these functions directly to bypass state check. + function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } + } + function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + var chunkSize = void 0; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + function ReadableStreamDefaultControllerError(controller, e) { + var stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); + } + function ReadableStreamDefaultControllerGetDesiredSize(controller) { + var state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; + } + // This is used in the implementation of TransformStream. + function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; + } + function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + var state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; + } + function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); + } + function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + var controller = Object.create(ReadableStreamDefaultController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = function () { return underlyingSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + } + // Helper functions for the ReadableStreamDefaultController. + function defaultControllerBrandCheckException$1(name) { + return new TypeError("ReadableStreamDefaultController.prototype.".concat(name, " can only be used on a ReadableStreamDefaultController")); + } + + function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); + } + function ReadableStreamDefaultTee(stream, cloneForBranch2) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgain = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgain = false; + var chunk1 = chunk; + var chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, function (r) { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; + } + function ReadableByteStreamTee(stream) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgainForBranch1 = false; + var readAgainForBranch2 = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, function (r) { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var chunk1 = chunk; + var chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + var byobBranch = forBranch2 ? branch2 : branch1; + var otherBranch = forBranch2 ? branch1 : branch2; + var readIntoRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + var clonedChunk = void 0; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function (chunk) { + reading = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; + } + + function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; + } + + function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); + } + function ReadableStreamFromIterable(asyncIterable) { + var stream; + var iteratorRecord = GetIterator(asyncIterable, 'async'); + var startAlgorithm = noop; + function pullAlgorithm() { + var nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + var nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + var done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + var iterator = iteratorRecord.iterator; + var returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + var returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + var returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + function ReadableStreamFromDefaultReader(reader) { + var stream; + var startAlgorithm = noop; + function pullAlgorithm() { + var readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, function (readResult) { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; + } + + function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + var original = source; + var autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var pull = original === null || original === void 0 ? void 0 : original.pull; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, "".concat(context, " has member 'autoAllocateChunkSize' that")), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, "".concat(context, " has member 'pull' that")), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, "".concat(context, " has member 'start' that")), + type: type === undefined ? undefined : convertReadableStreamType(type, "".concat(context, " has member 'type' that")) + }; + } + function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; + } + function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; + } + function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; + } + function convertReadableStreamType(type, context) { + type = "".concat(type); + if (type !== 'bytes') { + throw new TypeError("".concat(context, " '").concat(type, "' is not a valid enumeration value for ReadableStreamType")); + } + return type; + } + + function convertIteratorOptions(options, context) { + assertDictionary(options, context); + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; + } + + function convertPipeOptions(options, context) { + assertDictionary(options, context); + var preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + var preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + var signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, "".concat(context, " has member 'signal' that")); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal: signal + }; + } + function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError("".concat(context, " is not an AbortSignal.")); + } + } + + function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + var readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, "".concat(context, " has member 'readable' that")); + var writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, "".concat(context, " has member 'writable' that")); + return { readable: readable, writable: writable }; + } + + /** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ + var ReadableStream = /** @class */ (function () { + function ReadableStream(rawUnderlyingSource, rawStrategy) { + if (rawUnderlyingSource === void 0) { rawUnderlyingSource = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + var highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + Object.defineProperty(ReadableStream.prototype, "locked", { + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get: function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + ReadableStream.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + }; + ReadableStream.prototype.getReader = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + var options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + }; + ReadableStream.prototype.pipeThrough = function (rawTransform, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + var transform = convertReadableWritablePair(rawTransform, 'First parameter'); + var options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + var promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + }; + ReadableStream.prototype.pipeTo = function (destination, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith("Parameter 1 is required in 'pipeTo'."); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError("ReadableStream.prototype.pipeTo's first argument must be a WritableStream")); + } + var options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + }; + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + ReadableStream.prototype.tee = function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + var branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + }; + ReadableStream.prototype.values = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + var options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + }; + ReadableStream.prototype[SymbolAsyncIterator] = function (options) { + // Stub implementation, overridden below + return this.values(options); + }; + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + ReadableStream.from = function (asyncIterable) { + return ReadableStreamFrom(asyncIterable); + }; + return ReadableStream; + }()); + Object.defineProperties(ReadableStream, { + from: { enumerable: true } + }); + Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } + }); + setFunctionName(ReadableStream.from, 'from'); + setFunctionName(ReadableStream.prototype.cancel, 'cancel'); + setFunctionName(ReadableStream.prototype.getReader, 'getReader'); + setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); + setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); + setFunctionName(ReadableStream.prototype.tee, 'tee'); + setFunctionName(ReadableStream.prototype.values, 'values'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStream', + configurable: true + }); + } + Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true + }); + // Abstract operations for the ReadableStream. + // Throws if and only if startAlgorithm throws. + function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; + } + // Throws if and only if startAlgorithm throws. + function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; + } + function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; + } + function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; + } + function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; + } + // ReadableStream API exposed for controllers. + function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + var reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._closeSteps(undefined); + }); + } + var sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); + } + function ReadableStreamClose(stream) { + stream._state = 'closed'; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._closeSteps(); + }); + } + } + function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } + } + // Helper functions for the ReadableStream. + function streamBrandCheckException$1(name) { + return new TypeError("ReadableStream.prototype.".concat(name, " can only be used on a ReadableStream")); + } + + function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; + } + + // The size function must not have a prototype property nor be a constructor + var byteLengthSizeFunction = function (chunk) { + return chunk.byteLength; + }; + setFunctionName(byteLengthSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ + var ByteLengthQueuingStrategy = /** @class */ (function () { + function ByteLengthQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + }, + enumerable: false, + configurable: true + }); + return ByteLengthQueuingStrategy; + }()); + Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); + } + // Helper functions for the ByteLengthQueuingStrategy. + function byteLengthBrandCheckException(name) { + return new TypeError("ByteLengthQueuingStrategy.prototype.".concat(name, " can only be used on a ByteLengthQueuingStrategy")); + } + function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; + } + + // The size function must not have a prototype property nor be a constructor + var countSizeFunction = function () { + return 1; + }; + setFunctionName(countSizeFunction, 'size'); + /** + * A queuing strategy that counts the number of chunks. + * + * @public + */ + var CountQueuingStrategy = /** @class */ (function () { + function CountQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(CountQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(CountQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + }, + enumerable: false, + configurable: true + }); + return CountQueuingStrategy; + }()); + Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); + } + // Helper functions for the CountQueuingStrategy. + function countBrandCheckException(name) { + return new TypeError("CountQueuingStrategy.prototype.".concat(name, " can only be used on a CountQueuingStrategy")); + } + function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; + } + + function convertTransformer(original, context) { + assertDictionary(original, context); + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var flush = original === null || original === void 0 ? void 0 : original.flush; + var readableType = original === null || original === void 0 ? void 0 : original.readableType; + var start = original === null || original === void 0 ? void 0 : original.start; + var transform = original === null || original === void 0 ? void 0 : original.transform; + var writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, "".concat(context, " has member 'flush' that")), + readableType: readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, "".concat(context, " has member 'start' that")), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, "".concat(context, " has member 'transform' that")), + writableType: writableType + }; + } + function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; + } + function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; + } + function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; + } + function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; + } + + // Class TransformStream + /** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ + var TransformStream = /** @class */ (function () { + function TransformStream(rawTransformer, rawWritableStrategy, rawReadableStrategy) { + if (rawTransformer === void 0) { rawTransformer = {}; } + if (rawWritableStrategy === void 0) { rawWritableStrategy = {}; } + if (rawReadableStrategy === void 0) { rawReadableStrategy = {}; } + if (rawTransformer === undefined) { + rawTransformer = null; + } + var writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + var readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + var transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + var readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + var readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + var writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + var writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + var startPromise_resolve; + var startPromise = newPromise(function (resolve) { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + Object.defineProperty(TransformStream.prototype, "readable", { + /** + * The readable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(TransformStream.prototype, "writable", { + /** + * The writable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + }, + enumerable: false, + configurable: true + }); + return TransformStream; + }()); + Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } + }); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStream', + configurable: true + }); + } + function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; + } + function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; + } + // This is a no-op if both sides are already errored. + function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); + } + function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); + } + function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } + } + function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(function (resolve) { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; + } + // Class TransformStreamDefaultController + /** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ + var TransformStreamDefaultController = /** @class */ (function () { + function TransformStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(TransformStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get: function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + var readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + }, + enumerable: false, + configurable: true + }); + TransformStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + TransformStreamDefaultController.prototype.error = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + }; + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + TransformStreamDefaultController.prototype.terminate = function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + }; + return TransformStreamDefaultController; + }()); + Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } + }); + setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); + setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); + setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); + if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); + } + // Transform Stream Default Controller Abstract Operations + function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; + } + function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + var controller = Object.create(TransformStreamDefaultController.prototype); + var transformAlgorithm; + var flushAlgorithm; + var cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = function (chunk) { return transformer.transform(chunk, controller); }; + } + else { + transformAlgorithm = function (chunk) { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = function () { return transformer.flush(controller); }; + } + else { + flushAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = function (reason) { return transformer.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); + } + function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + } + function TransformStreamDefaultControllerEnqueue(controller, chunk) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + var backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } + } + function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); + } + function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + var transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, function (r) { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); + } + function TransformStreamDefaultControllerTerminate(controller) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + var error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); + } + // TransformStreamDefaultSink Algorithms + function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + var controller = stream._transformStreamController; + if (stream._backpressure) { + var backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, function () { + var writable = stream._writable; + var state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + } + function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + function TransformStreamDefaultSinkCloseAlgorithm(stream) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // TransformStreamDefaultSource Algorithms + function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; + } + function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + var writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; + } + // Helper functions for the TransformStreamDefaultController. + function defaultControllerBrandCheckException(name) { + return new TypeError("TransformStreamDefaultController.prototype.".concat(name, " can only be used on a TransformStreamDefaultController")); + } + function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; + } + // Helper functions for the TransformStream. + function streamBrandCheckException(name) { + return new TypeError("TransformStream.prototype.".concat(name, " can only be used on a TransformStream")); + } + + exports.ByteLengthQueuingStrategy = ByteLengthQueuingStrategy; + exports.CountQueuingStrategy = CountQueuingStrategy; + exports.ReadableByteStreamController = ReadableByteStreamController; + exports.ReadableStream = ReadableStream; + exports.ReadableStreamBYOBReader = ReadableStreamBYOBReader; + exports.ReadableStreamBYOBRequest = ReadableStreamBYOBRequest; + exports.ReadableStreamDefaultController = ReadableStreamDefaultController; + exports.ReadableStreamDefaultReader = ReadableStreamDefaultReader; + exports.TransformStream = TransformStream; + exports.TransformStreamDefaultController = TransformStreamDefaultController; + exports.WritableStream = WritableStream; + exports.WritableStreamDefaultController = WritableStreamDefaultController; + exports.WritableStreamDefaultWriter = WritableStreamDefaultWriter; + +})); +//# sourceMappingURL=ponyfill.js.map diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.js.map b/node_modules/web-streams-polyfill/dist/ponyfill.js.map new file mode 100644 index 0000000..d151897 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.js.map @@ -0,0 +1 @@ +{"version":3,"file":"ponyfill.js","sources":["../src/stub/symbol.ts","../node_modules/tslib/tslib.es6.js","../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts"],"sourcesContent":["/// \n\nconst SymbolPolyfill: (description?: string) => symbol =\n typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ?\n Symbol :\n description => `Symbol(${description})` as any as symbol;\n\nexport default SymbolPolyfill;\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.mjs b/node_modules/web-streams-polyfill/dist/ponyfill.mjs new file mode 100644 index 0000000..5915a70 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.mjs @@ -0,0 +1,4963 @@ +/** + * @license + * web-streams-polyfill v3.3.3 + * Copyright 2024 Mattias Buelens, Diwank Singh Tomer and other contributors. + * This code is released under the MIT license. + * SPDX-License-Identifier: MIT + */ +/// +var SymbolPolyfill = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? + Symbol : + function (description) { return "Symbol(".concat(description, ")"); }; + +/****************************************************************************** +Copyright (c) Microsoft Corporation. + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH +REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, +INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM +LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +PERFORMANCE OF THIS SOFTWARE. +***************************************************************************** */ +/* global Reflect, Promise, SuppressedError, Symbol */ + + +function __generator(thisArg, body) { + var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; + return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; + function verb(n) { return function (v) { return step([n, v]); }; } + function step(op) { + if (f) throw new TypeError("Generator is already executing."); + while (g && (g = 0, op[0] && (_ = 0)), _) try { + if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t; + if (y = 0, t) op = [op[0] & 2, t.value]; + switch (op[0]) { + case 0: case 1: t = op; break; + case 4: _.label++; return { value: op[1], done: false }; + case 5: _.label++; y = op[1]; op = [0]; continue; + case 7: op = _.ops.pop(); _.trys.pop(); continue; + default: + if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } + if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } + if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } + if (t[2]) _.ops.pop(); + _.trys.pop(); continue; + } + op = body.call(thisArg, _); + } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } + if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; + } +} + +function __values(o) { + var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; + if (m) return m.call(o); + if (o && typeof o.length === "number") return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + } + }; + throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); +} + +function __await(v) { + return this instanceof __await ? (this.v = v, this) : new __await(v); +} + +function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var g = generator.apply(thisArg, _arguments || []), i, q = []; + return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i; + function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; } + function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } } + function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); } + function fulfill(value) { resume("next", value); } + function reject(value) { resume("throw", value); } + function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); } +} + +function __asyncDelegator(o) { + var i, p; + return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i; + function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; } +} + +function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined."); + var m = o[Symbol.asyncIterator], i; + return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i); + function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; } + function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); } +} + +typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) { + var e = new Error(message); + return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e; +}; + +function noop() { + return undefined; +} + +function typeIsObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +var rethrowAssertionErrorRejection = noop; +function setFunctionName(fn, name) { + try { + Object.defineProperty(fn, 'name', { + value: name, + configurable: true + }); + } + catch (_a) { + // This property is non-configurable in older browsers, so ignore if this throws. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility + } +} + +var originalPromise = Promise; +var originalPromiseThen = Promise.prototype.then; +var originalPromiseReject = Promise.reject.bind(originalPromise); +// https://webidl.spec.whatwg.org/#a-new-promise +function newPromise(executor) { + return new originalPromise(executor); +} +// https://webidl.spec.whatwg.org/#a-promise-resolved-with +function promiseResolvedWith(value) { + return newPromise(function (resolve) { return resolve(value); }); +} +// https://webidl.spec.whatwg.org/#a-promise-rejected-with +function promiseRejectedWith(reason) { + return originalPromiseReject(reason); +} +function PerformPromiseThen(promise, onFulfilled, onRejected) { + // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an + // approximation. + return originalPromiseThen.call(promise, onFulfilled, onRejected); +} +// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned +// from that handler. To prevent this, return null instead of void from all handlers. +// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it +function uponPromise(promise, onFulfilled, onRejected) { + PerformPromiseThen(PerformPromiseThen(promise, onFulfilled, onRejected), undefined, rethrowAssertionErrorRejection); +} +function uponFulfillment(promise, onFulfilled) { + uponPromise(promise, onFulfilled); +} +function uponRejection(promise, onRejected) { + uponPromise(promise, undefined, onRejected); +} +function transformPromiseWith(promise, fulfillmentHandler, rejectionHandler) { + return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler); +} +function setPromiseIsHandledToTrue(promise) { + PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection); +} +var _queueMicrotask = function (callback) { + if (typeof queueMicrotask === 'function') { + _queueMicrotask = queueMicrotask; + } + else { + var resolvedPromise_1 = promiseResolvedWith(undefined); + _queueMicrotask = function (cb) { return PerformPromiseThen(resolvedPromise_1, cb); }; + } + return _queueMicrotask(callback); +}; +function reflectCall(F, V, args) { + if (typeof F !== 'function') { + throw new TypeError('Argument is not a function'); + } + return Function.prototype.apply.call(F, V, args); +} +function promiseCall(F, V, args) { + try { + return promiseResolvedWith(reflectCall(F, V, args)); + } + catch (value) { + return promiseRejectedWith(value); + } +} + +// Original from Chromium +// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js +var QUEUE_MAX_ARRAY_SIZE = 16384; +/** + * Simple queue structure. + * + * Avoids scalability issues with using a packed array directly by using + * multiple arrays in a linked list and keeping the array size bounded. + */ +var SimpleQueue = /** @class */ (function () { + function SimpleQueue() { + this._cursor = 0; + this._size = 0; + // _front and _back are always defined. + this._front = { + _elements: [], + _next: undefined + }; + this._back = this._front; + // The cursor is used to avoid calling Array.shift(). + // It contains the index of the front element of the array inside the + // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE). + this._cursor = 0; + // When there is only one node, size === elements.length - cursor. + this._size = 0; + } + Object.defineProperty(SimpleQueue.prototype, "length", { + get: function () { + return this._size; + }, + enumerable: false, + configurable: true + }); + // For exception safety, this method is structured in order: + // 1. Read state + // 2. Calculate required state mutations + // 3. Perform state mutations + SimpleQueue.prototype.push = function (element) { + var oldBack = this._back; + var newBack = oldBack; + if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) { + newBack = { + _elements: [], + _next: undefined + }; + } + // push() is the mutation most likely to throw an exception, so it + // goes first. + oldBack._elements.push(element); + if (newBack !== oldBack) { + this._back = newBack; + oldBack._next = newBack; + } + ++this._size; + }; + // Like push(), shift() follows the read -> calculate -> mutate pattern for + // exception safety. + SimpleQueue.prototype.shift = function () { // must not be called on an empty queue + var oldFront = this._front; + var newFront = oldFront; + var oldCursor = this._cursor; + var newCursor = oldCursor + 1; + var elements = oldFront._elements; + var element = elements[oldCursor]; + if (newCursor === QUEUE_MAX_ARRAY_SIZE) { + newFront = oldFront._next; + newCursor = 0; + } + // No mutations before this point. + --this._size; + this._cursor = newCursor; + if (oldFront !== newFront) { + this._front = newFront; + } + // Permit shifted element to be garbage collected. + elements[oldCursor] = undefined; + return element; + }; + // The tricky thing about forEach() is that it can be called + // re-entrantly. The queue may be mutated inside the callback. It is easy to + // see that push() within the callback has no negative effects since the end + // of the queue is checked for on every iteration. If shift() is called + // repeatedly within the callback then the next iteration may return an + // element that has been removed. In this case the callback will be called + // with undefined values until we either "catch up" with elements that still + // exist or reach the back of the queue. + SimpleQueue.prototype.forEach = function (callback) { + var i = this._cursor; + var node = this._front; + var elements = node._elements; + while (i !== elements.length || node._next !== undefined) { + if (i === elements.length) { + node = node._next; + elements = node._elements; + i = 0; + if (elements.length === 0) { + break; + } + } + callback(elements[i]); + ++i; + } + }; + // Return the element that would be returned if shift() was called now, + // without modifying the queue. + SimpleQueue.prototype.peek = function () { // must not be called on an empty queue + var front = this._front; + var cursor = this._cursor; + return front._elements[cursor]; + }; + return SimpleQueue; +}()); + +var AbortSteps = SymbolPolyfill('[[AbortSteps]]'); +var ErrorSteps = SymbolPolyfill('[[ErrorSteps]]'); +var CancelSteps = SymbolPolyfill('[[CancelSteps]]'); +var PullSteps = SymbolPolyfill('[[PullSteps]]'); +var ReleaseSteps = SymbolPolyfill('[[ReleaseSteps]]'); + +function ReadableStreamReaderGenericInitialize(reader, stream) { + reader._ownerReadableStream = stream; + stream._reader = reader; + if (stream._state === 'readable') { + defaultReaderClosedPromiseInitialize(reader); + } + else if (stream._state === 'closed') { + defaultReaderClosedPromiseInitializeAsResolved(reader); + } + else { + defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError); + } +} +// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state +// check. +function ReadableStreamReaderGenericCancel(reader, reason) { + var stream = reader._ownerReadableStream; + return ReadableStreamCancel(stream, reason); +} +function ReadableStreamReaderGenericRelease(reader) { + var stream = reader._ownerReadableStream; + if (stream._state === 'readable') { + defaultReaderClosedPromiseReject(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + else { + defaultReaderClosedPromiseResetToRejected(reader, new TypeError("Reader was released and can no longer be used to monitor the stream's closedness")); + } + stream._readableStreamController[ReleaseSteps](); + stream._reader = undefined; + reader._ownerReadableStream = undefined; +} +// Helper functions for the readers. +function readerLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released reader'); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderClosedPromiseInitialize(reader) { + reader._closedPromise = newPromise(function (resolve, reject) { + reader._closedPromise_resolve = resolve; + reader._closedPromise_reject = reject; + }); +} +function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseReject(reader, reason); +} +function defaultReaderClosedPromiseInitializeAsResolved(reader) { + defaultReaderClosedPromiseInitialize(reader); + defaultReaderClosedPromiseResolve(reader); +} +function defaultReaderClosedPromiseReject(reader, reason) { + if (reader._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(reader._closedPromise); + reader._closedPromise_reject(reason); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} +function defaultReaderClosedPromiseResetToRejected(reader, reason) { + defaultReaderClosedPromiseInitializeAsRejected(reader, reason); +} +function defaultReaderClosedPromiseResolve(reader) { + if (reader._closedPromise_resolve === undefined) { + return; + } + reader._closedPromise_resolve(undefined); + reader._closedPromise_resolve = undefined; + reader._closedPromise_reject = undefined; +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill +var NumberIsFinite = Number.isFinite || function (x) { + return typeof x === 'number' && isFinite(x); +}; + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill +var MathTrunc = Math.trunc || function (v) { + return v < 0 ? Math.ceil(v) : Math.floor(v); +}; + +// https://heycam.github.io/webidl/#idl-dictionaries +function isDictionary(x) { + return typeof x === 'object' || typeof x === 'function'; +} +function assertDictionary(obj, context) { + if (obj !== undefined && !isDictionary(obj)) { + throw new TypeError("".concat(context, " is not an object.")); + } +} +// https://heycam.github.io/webidl/#idl-callback-functions +function assertFunction(x, context) { + if (typeof x !== 'function') { + throw new TypeError("".concat(context, " is not a function.")); + } +} +// https://heycam.github.io/webidl/#idl-object +function isObject(x) { + return (typeof x === 'object' && x !== null) || typeof x === 'function'; +} +function assertObject(x, context) { + if (!isObject(x)) { + throw new TypeError("".concat(context, " is not an object.")); + } +} +function assertRequiredArgument(x, position, context) { + if (x === undefined) { + throw new TypeError("Parameter ".concat(position, " is required in '").concat(context, "'.")); + } +} +function assertRequiredField(x, field, context) { + if (x === undefined) { + throw new TypeError("".concat(field, " is required in '").concat(context, "'.")); + } +} +// https://heycam.github.io/webidl/#idl-unrestricted-double +function convertUnrestrictedDouble(value) { + return Number(value); +} +function censorNegativeZero(x) { + return x === 0 ? 0 : x; +} +function integerPart(x) { + return censorNegativeZero(MathTrunc(x)); +} +// https://heycam.github.io/webidl/#idl-unsigned-long-long +function convertUnsignedLongLongWithEnforceRange(value, context) { + var lowerBound = 0; + var upperBound = Number.MAX_SAFE_INTEGER; + var x = Number(value); + x = censorNegativeZero(x); + if (!NumberIsFinite(x)) { + throw new TypeError("".concat(context, " is not a finite number")); + } + x = integerPart(x); + if (x < lowerBound || x > upperBound) { + throw new TypeError("".concat(context, " is outside the accepted range of ").concat(lowerBound, " to ").concat(upperBound, ", inclusive")); + } + if (!NumberIsFinite(x) || x === 0) { + return 0; + } + // TODO Use BigInt if supported? + // let xBigInt = BigInt(integerPart(x)); + // xBigInt = BigInt.asUintN(64, xBigInt); + // return Number(xBigInt); + return x; +} + +function assertReadableStream(x, context) { + if (!IsReadableStream(x)) { + throw new TypeError("".concat(context, " is not a ReadableStream.")); + } +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamDefaultReader(stream) { + return new ReadableStreamDefaultReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadRequest(stream, readRequest) { + stream._reader._readRequests.push(readRequest); +} +function ReadableStreamFulfillReadRequest(stream, chunk, done) { + var reader = stream._reader; + var readRequest = reader._readRequests.shift(); + if (done) { + readRequest._closeSteps(); + } + else { + readRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadRequests(stream) { + return stream._reader._readRequests.length; +} +function ReadableStreamHasDefaultReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamDefaultReader(reader)) { + return false; + } + return true; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +var ReadableStreamDefaultReader = /** @class */ (function () { + function ReadableStreamDefaultReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamDefaultReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamDefaultReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + ReadableStreamDefaultReader.prototype.read = function () { + if (!IsReadableStreamDefaultReader(this)) { + return promiseRejectedWith(defaultReaderBrandCheckException('read')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function () { return resolvePromise({ value: undefined, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamDefaultReaderRead(this, readRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamDefaultReader.prototype.releaseLock = function () { + if (!IsReadableStreamDefaultReader(this)) { + throw defaultReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamDefaultReaderRelease(this); + }; + return ReadableStreamDefaultReader; +}()); +Object.defineProperties(ReadableStreamDefaultReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamDefaultReader.prototype.read, 'read'); +setFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamDefaultReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) { + return false; + } + return x instanceof ReadableStreamDefaultReader; +} +function ReadableStreamDefaultReaderRead(reader, readRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'closed') { + readRequest._closeSteps(); + } + else if (stream._state === 'errored') { + readRequest._errorSteps(stream._storedError); + } + else { + stream._readableStreamController[PullSteps](readRequest); + } +} +function ReadableStreamDefaultReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamDefaultReaderErrorReadRequests(reader, e); +} +function ReadableStreamDefaultReaderErrorReadRequests(reader, e) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamDefaultReader. +function defaultReaderBrandCheckException(name) { + return new TypeError("ReadableStreamDefaultReader.prototype.".concat(name, " can only be used on a ReadableStreamDefaultReader")); +} + +var _a$1, _b, _c; +function CreateArrayFromList(elements) { + // We use arrays to represent lists, so this is basically a no-op. + // Do a slice though just in case we happen to depend on the unique-ness. + return elements.slice(); +} +function CopyDataBlockBytes(dest, destOffset, src, srcOffset, n) { + new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset); +} +var TransferArrayBuffer = function (O) { + if (typeof O.transfer === 'function') { + TransferArrayBuffer = function (buffer) { return buffer.transfer(); }; + } + else if (typeof structuredClone === 'function') { + TransferArrayBuffer = function (buffer) { return structuredClone(buffer, { transfer: [buffer] }); }; + } + else { + // Not implemented correctly + TransferArrayBuffer = function (buffer) { return buffer; }; + } + return TransferArrayBuffer(O); +}; +var IsDetachedBuffer = function (O) { + if (typeof O.detached === 'boolean') { + IsDetachedBuffer = function (buffer) { return buffer.detached; }; + } + else { + // Not implemented correctly + IsDetachedBuffer = function (buffer) { return buffer.byteLength === 0; }; + } + return IsDetachedBuffer(O); +}; +function ArrayBufferSlice(buffer, begin, end) { + // ArrayBuffer.prototype.slice is not available on IE10 + // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice + if (buffer.slice) { + return buffer.slice(begin, end); + } + var length = end - begin; + var slice = new ArrayBuffer(length); + CopyDataBlockBytes(slice, 0, buffer, begin, length); + return slice; +} +function GetMethod(receiver, prop) { + var func = receiver[prop]; + if (func === undefined || func === null) { + return undefined; + } + if (typeof func !== 'function') { + throw new TypeError("".concat(String(prop), " is not a function")); + } + return func; +} +function CreateAsyncFromSyncIterator(syncIteratorRecord) { + // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%, + // we use yield* inside an async generator function to achieve the same result. + var _a; + // Wrap the sync iterator inside a sync iterable, so we can use it with yield*. + var syncIterable = (_a = {}, + _a[SymbolPolyfill.iterator] = function () { return syncIteratorRecord.iterator; }, + _a); + // Create an async generator function and immediately invoke it. + var asyncIterator = (function () { + return __asyncGenerator(this, arguments, function () { + return __generator(this, function (_a) { + switch (_a.label) { + case 0: return [5 /*yield**/, __values(__asyncDelegator(__asyncValues(syncIterable)))]; + case 1: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 2: return [4 /*yield*/, __await.apply(void 0, [_a.sent()])]; + case 3: return [2 /*return*/, _a.sent()]; + } + }); + }); + }()); + // Return as an async iterator record. + var nextMethod = asyncIterator.next; + return { iterator: asyncIterator, nextMethod: nextMethod, done: false }; +} +// Aligns with core-js/modules/es.symbol.async-iterator.js +var SymbolAsyncIterator = (_c = (_a$1 = SymbolPolyfill.asyncIterator) !== null && _a$1 !== void 0 ? _a$1 : (_b = SymbolPolyfill.for) === null || _b === void 0 ? void 0 : _b.call(SymbolPolyfill, 'Symbol.asyncIterator')) !== null && _c !== void 0 ? _c : '@@asyncIterator'; +function GetIterator(obj, hint, method) { + if (hint === void 0) { hint = 'sync'; } + if (method === undefined) { + if (hint === 'async') { + method = GetMethod(obj, SymbolAsyncIterator); + if (method === undefined) { + var syncMethod = GetMethod(obj, SymbolPolyfill.iterator); + var syncIteratorRecord = GetIterator(obj, 'sync', syncMethod); + return CreateAsyncFromSyncIterator(syncIteratorRecord); + } + } + else { + method = GetMethod(obj, SymbolPolyfill.iterator); + } + } + if (method === undefined) { + throw new TypeError('The object is not iterable'); + } + var iterator = reflectCall(method, obj, []); + if (!typeIsObject(iterator)) { + throw new TypeError('The iterator method must return an object'); + } + var nextMethod = iterator.next; + return { iterator: iterator, nextMethod: nextMethod, done: false }; +} +function IteratorNext(iteratorRecord) { + var result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []); + if (!typeIsObject(result)) { + throw new TypeError('The iterator.next() method must return an object'); + } + return result; +} +function IteratorComplete(iterResult) { + return Boolean(iterResult.done); +} +function IteratorValue(iterResult) { + return iterResult.value; +} + +/// +var _a; +// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it. +var AsyncIteratorPrototype = (_a = {}, + // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( ) + // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator + _a[SymbolAsyncIterator] = function () { + return this; + }, + _a); +Object.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false }); + +/// +var ReadableStreamAsyncIteratorImpl = /** @class */ (function () { + function ReadableStreamAsyncIteratorImpl(reader, preventCancel) { + this._ongoingPromise = undefined; + this._isFinished = false; + this._reader = reader; + this._preventCancel = preventCancel; + } + ReadableStreamAsyncIteratorImpl.prototype.next = function () { + var _this = this; + var nextSteps = function () { return _this._nextSteps(); }; + this._ongoingPromise = this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) : + nextSteps(); + return this._ongoingPromise; + }; + ReadableStreamAsyncIteratorImpl.prototype.return = function (value) { + var _this = this; + var returnSteps = function () { return _this._returnSteps(value); }; + return this._ongoingPromise ? + transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) : + returnSteps(); + }; + ReadableStreamAsyncIteratorImpl.prototype._nextSteps = function () { + var _this = this; + if (this._isFinished) { + return Promise.resolve({ value: undefined, done: true }); + } + var reader = this._reader; + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readRequest = { + _chunkSteps: function (chunk) { + _this._ongoingPromise = undefined; + // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test. + // FIXME Is this a bug in the specification, or in the test? + _queueMicrotask(function () { return resolvePromise({ value: chunk, done: false }); }); + }, + _closeSteps: function () { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + resolvePromise({ value: undefined, done: true }); + }, + _errorSteps: function (reason) { + _this._ongoingPromise = undefined; + _this._isFinished = true; + ReadableStreamReaderGenericRelease(reader); + rejectPromise(reason); + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promise; + }; + ReadableStreamAsyncIteratorImpl.prototype._returnSteps = function (value) { + if (this._isFinished) { + return Promise.resolve({ value: value, done: true }); + } + this._isFinished = true; + var reader = this._reader; + if (!this._preventCancel) { + var result = ReadableStreamReaderGenericCancel(reader, value); + ReadableStreamReaderGenericRelease(reader); + return transformPromiseWith(result, function () { return ({ value: value, done: true }); }); + } + ReadableStreamReaderGenericRelease(reader); + return promiseResolvedWith({ value: value, done: true }); + }; + return ReadableStreamAsyncIteratorImpl; +}()); +var ReadableStreamAsyncIteratorPrototype = { + next: function () { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next')); + } + return this._asyncIteratorImpl.next(); + }, + return: function (value) { + if (!IsReadableStreamAsyncIterator(this)) { + return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return')); + } + return this._asyncIteratorImpl.return(value); + } +}; +Object.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype); +// Abstract operations for the ReadableStream. +function AcquireReadableStreamAsyncIterator(stream, preventCancel) { + var reader = AcquireReadableStreamDefaultReader(stream); + var impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel); + var iterator = Object.create(ReadableStreamAsyncIteratorPrototype); + iterator._asyncIteratorImpl = impl; + return iterator; +} +function IsReadableStreamAsyncIterator(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) { + return false; + } + try { + // noinspection SuspiciousTypeOfGuard + return x._asyncIteratorImpl instanceof + ReadableStreamAsyncIteratorImpl; + } + catch (_a) { + return false; + } +} +// Helper functions for the ReadableStream. +function streamAsyncIteratorBrandCheckException(name) { + return new TypeError("ReadableStreamAsyncIterator.".concat(name, " can only be used on a ReadableSteamAsyncIterator")); +} + +/// +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill +var NumberIsNaN = Number.isNaN || function (x) { + // eslint-disable-next-line no-self-compare + return x !== x; +}; + +function IsNonNegativeNumber(v) { + if (typeof v !== 'number') { + return false; + } + if (NumberIsNaN(v)) { + return false; + } + if (v < 0) { + return false; + } + return true; +} +function CloneAsUint8Array(O) { + var buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength); + return new Uint8Array(buffer); +} + +function DequeueValue(container) { + var pair = container._queue.shift(); + container._queueTotalSize -= pair.size; + if (container._queueTotalSize < 0) { + container._queueTotalSize = 0; + } + return pair.value; +} +function EnqueueValueWithSize(container, value, size) { + if (!IsNonNegativeNumber(size) || size === Infinity) { + throw new RangeError('Size must be a finite, non-NaN, non-negative number.'); + } + container._queue.push({ value: value, size: size }); + container._queueTotalSize += size; +} +function PeekQueueValue(container) { + var pair = container._queue.peek(); + return pair.value; +} +function ResetQueue(container) { + container._queue = new SimpleQueue(); + container._queueTotalSize = 0; +} + +function isDataViewConstructor(ctor) { + return ctor === DataView; +} +function isDataView(view) { + return isDataViewConstructor(view.constructor); +} +function arrayBufferViewElementSize(ctor) { + if (isDataViewConstructor(ctor)) { + return 1; + } + return ctor.BYTES_PER_ELEMENT; +} + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +var ReadableStreamBYOBRequest = /** @class */ (function () { + function ReadableStreamBYOBRequest() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamBYOBRequest.prototype, "view", { + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get: function () { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('view'); + } + return this._view; + }, + enumerable: false, + configurable: true + }); + ReadableStreamBYOBRequest.prototype.respond = function (bytesWritten) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respond'); + } + assertRequiredArgument(bytesWritten, 1, 'respond'); + bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter'); + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(this._view.buffer)) { + throw new TypeError("The BYOB request's buffer has been detached and so cannot be used as a response"); + } + ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten); + }; + ReadableStreamBYOBRequest.prototype.respondWithNewView = function (view) { + if (!IsReadableStreamBYOBRequest(this)) { + throw byobRequestBrandCheckException('respondWithNewView'); + } + assertRequiredArgument(view, 1, 'respondWithNewView'); + if (!ArrayBuffer.isView(view)) { + throw new TypeError('You can only respond with array buffer views'); + } + if (this._associatedReadableByteStreamController === undefined) { + throw new TypeError('This BYOB request has been invalidated'); + } + if (IsDetachedBuffer(view.buffer)) { + throw new TypeError('The given view\'s buffer has been detached and so cannot be used as a response'); + } + ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view); + }; + return ReadableStreamBYOBRequest; +}()); +Object.defineProperties(ReadableStreamBYOBRequest.prototype, { + respond: { enumerable: true }, + respondWithNewView: { enumerable: true }, + view: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond'); +setFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBRequest.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBRequest', + configurable: true + }); +} +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +var ReadableByteStreamController = /** @class */ (function () { + function ReadableByteStreamController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableByteStreamController.prototype, "byobRequest", { + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('byobRequest'); + } + return ReadableByteStreamControllerGetBYOBRequest(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ReadableByteStreamController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('desiredSize'); + } + return ReadableByteStreamControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableByteStreamController.prototype.close = function () { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('close'); + } + if (this._closeRequested) { + throw new TypeError('The stream has already been closed; do not close it again!'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be closed")); + } + ReadableByteStreamControllerClose(this); + }; + ReadableByteStreamController.prototype.enqueue = function (chunk) { + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('enqueue'); + } + assertRequiredArgument(chunk, 1, 'enqueue'); + if (!ArrayBuffer.isView(chunk)) { + throw new TypeError('chunk must be an array buffer view'); + } + if (chunk.byteLength === 0) { + throw new TypeError('chunk must have non-zero byteLength'); + } + if (chunk.buffer.byteLength === 0) { + throw new TypeError("chunk's buffer must have non-zero byteLength"); + } + if (this._closeRequested) { + throw new TypeError('stream is closed or draining'); + } + var state = this._controlledReadableByteStream._state; + if (state !== 'readable') { + throw new TypeError("The stream (in ".concat(state, " state) is not in the readable state and cannot be enqueued to")); + } + ReadableByteStreamControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableByteStreamController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableByteStreamController(this)) { + throw byteStreamControllerBrandCheckException('error'); + } + ReadableByteStreamControllerError(this, e); + }; + /** @internal */ + ReadableByteStreamController.prototype[CancelSteps] = function (reason) { + ReadableByteStreamControllerClearPendingPullIntos(this); + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableByteStreamControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableByteStreamController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableByteStream; + if (this._queueTotalSize > 0) { + ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest); + return; + } + var autoAllocateChunkSize = this._autoAllocateChunkSize; + if (autoAllocateChunkSize !== undefined) { + var buffer = void 0; + try { + buffer = new ArrayBuffer(autoAllocateChunkSize); + } + catch (bufferE) { + readRequest._errorSteps(bufferE); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: autoAllocateChunkSize, + byteOffset: 0, + byteLength: autoAllocateChunkSize, + bytesFilled: 0, + minimumFill: 1, + elementSize: 1, + viewConstructor: Uint8Array, + readerType: 'default' + }; + this._pendingPullIntos.push(pullIntoDescriptor); + } + ReadableStreamAddReadRequest(stream, readRequest); + ReadableByteStreamControllerCallPullIfNeeded(this); + }; + /** @internal */ + ReadableByteStreamController.prototype[ReleaseSteps] = function () { + if (this._pendingPullIntos.length > 0) { + var firstPullInto = this._pendingPullIntos.peek(); + firstPullInto.readerType = 'none'; + this._pendingPullIntos = new SimpleQueue(); + this._pendingPullIntos.push(firstPullInto); + } + }; + return ReadableByteStreamController; +}()); +Object.defineProperties(ReadableByteStreamController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + byobRequest: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableByteStreamController.prototype.close, 'close'); +setFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableByteStreamController.prototype.error, 'error'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableByteStreamController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableByteStreamController', + configurable: true + }); +} +// Abstract operations for the ReadableByteStreamController. +function IsReadableByteStreamController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) { + return false; + } + return x instanceof ReadableByteStreamController; +} +function IsReadableStreamBYOBRequest(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) { + return false; + } + return x instanceof ReadableStreamBYOBRequest; +} +function ReadableByteStreamControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableByteStreamControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + // TODO: Test controller argument + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableByteStreamControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableByteStreamControllerError(controller, e); + return null; + }); +} +function ReadableByteStreamControllerClearPendingPullIntos(controller) { + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + controller._pendingPullIntos = new SimpleQueue(); +} +function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) { + var done = false; + if (stream._state === 'closed') { + done = true; + } + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'default') { + ReadableStreamFulfillReadRequest(stream, filledView, done); + } + else { + ReadableStreamFulfillReadIntoRequest(stream, filledView, done); + } +} +function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) { + var bytesFilled = pullIntoDescriptor.bytesFilled; + var elementSize = pullIntoDescriptor.elementSize; + return new pullIntoDescriptor.viewConstructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize); +} +function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) { + controller._queue.push({ buffer: buffer, byteOffset: byteOffset, byteLength: byteLength }); + controller._queueTotalSize += byteLength; +} +function ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, buffer, byteOffset, byteLength) { + var clonedChunk; + try { + clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength); + } + catch (cloneE) { + ReadableByteStreamControllerError(controller, cloneE); + throw cloneE; + } + ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength); +} +function ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstDescriptor) { + if (firstDescriptor.bytesFilled > 0) { + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, firstDescriptor.buffer, firstDescriptor.byteOffset, firstDescriptor.bytesFilled); + } + ReadableByteStreamControllerShiftPendingPullInto(controller); +} +function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) { + var maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled); + var maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy; + var totalBytesToCopyRemaining = maxBytesToCopy; + var ready = false; + var remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize; + var maxAlignedBytes = maxBytesFilled - remainderBytes; + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) { + totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled; + ready = true; + } + var queue = controller._queue; + while (totalBytesToCopyRemaining > 0) { + var headOfQueue = queue.peek(); + var bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength); + var destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy); + if (headOfQueue.byteLength === bytesToCopy) { + queue.shift(); + } + else { + headOfQueue.byteOffset += bytesToCopy; + headOfQueue.byteLength -= bytesToCopy; + } + controller._queueTotalSize -= bytesToCopy; + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor); + totalBytesToCopyRemaining -= bytesToCopy; + } + return ready; +} +function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) { + pullIntoDescriptor.bytesFilled += size; +} +function ReadableByteStreamControllerHandleQueueDrain(controller) { + if (controller._queueTotalSize === 0 && controller._closeRequested) { + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(controller._controlledReadableByteStream); + } + else { + ReadableByteStreamControllerCallPullIfNeeded(controller); + } +} +function ReadableByteStreamControllerInvalidateBYOBRequest(controller) { + if (controller._byobRequest === null) { + return; + } + controller._byobRequest._associatedReadableByteStreamController = undefined; + controller._byobRequest._view = null; + controller._byobRequest = null; +} +function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) { + while (controller._pendingPullIntos.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var pullIntoDescriptor = controller._pendingPullIntos.peek(); + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller) { + var reader = controller._controlledReadableByteStream._reader; + while (reader._readRequests.length > 0) { + if (controller._queueTotalSize === 0) { + return; + } + var readRequest = reader._readRequests.shift(); + ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest); + } +} +function ReadableByteStreamControllerPullInto(controller, view, min, readIntoRequest) { + var stream = controller._controlledReadableByteStream; + var ctor = view.constructor; + var elementSize = arrayBufferViewElementSize(ctor); + var byteOffset = view.byteOffset, byteLength = view.byteLength; + var minimumFill = min * elementSize; + var buffer; + try { + buffer = TransferArrayBuffer(view.buffer); + } + catch (e) { + readIntoRequest._errorSteps(e); + return; + } + var pullIntoDescriptor = { + buffer: buffer, + bufferByteLength: buffer.byteLength, + byteOffset: byteOffset, + byteLength: byteLength, + bytesFilled: 0, + minimumFill: minimumFill, + elementSize: elementSize, + viewConstructor: ctor, + readerType: 'byob' + }; + if (controller._pendingPullIntos.length > 0) { + controller._pendingPullIntos.push(pullIntoDescriptor); + // No ReadableByteStreamControllerCallPullIfNeeded() call since: + // - No change happens on desiredSize + // - The source has already been notified of that there's at least 1 pending read(view) + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + return; + } + if (stream._state === 'closed') { + var emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0); + readIntoRequest._closeSteps(emptyView); + return; + } + if (controller._queueTotalSize > 0) { + if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) { + var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor); + ReadableByteStreamControllerHandleQueueDrain(controller); + readIntoRequest._chunkSteps(filledView); + return; + } + if (controller._closeRequested) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + readIntoRequest._errorSteps(e); + return; + } + } + controller._pendingPullIntos.push(pullIntoDescriptor); + ReadableStreamAddReadIntoRequest(stream, readIntoRequest); + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) { + if (firstDescriptor.readerType === 'none') { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var stream = controller._controlledReadableByteStream; + if (ReadableStreamHasBYOBReader(stream)) { + while (ReadableStreamGetNumReadIntoRequests(stream) > 0) { + var pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller); + ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor); + } + } +} +function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) { + ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor); + if (pullIntoDescriptor.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + return; + } + if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) { + // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head + // of the queue, so the underlying source can keep filling it. + return; + } + ReadableByteStreamControllerShiftPendingPullInto(controller); + var remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize; + if (remainderSize > 0) { + var end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled; + ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller, pullIntoDescriptor.buffer, end - remainderSize, remainderSize); + } + pullIntoDescriptor.bytesFilled -= remainderSize; + ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); +} +function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor); + } + else { + ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerShiftPendingPullInto(controller) { + var descriptor = controller._pendingPullIntos.shift(); + return descriptor; +} +function ReadableByteStreamControllerShouldCallPull(controller) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return false; + } + if (controller._closeRequested) { + return false; + } + if (!controller._started) { + return false; + } + if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableByteStreamControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableByteStreamControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +// A client of ReadableByteStreamController may use these functions directly to bypass state check. +function ReadableByteStreamControllerClose(controller) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + if (controller._queueTotalSize > 0) { + controller._closeRequested = true; + return; + } + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) { + var e = new TypeError('Insufficient bytes to fill elements in the given buffer'); + ReadableByteStreamControllerError(controller, e); + throw e; + } + } + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamClose(stream); +} +function ReadableByteStreamControllerEnqueue(controller, chunk) { + var stream = controller._controlledReadableByteStream; + if (controller._closeRequested || stream._state !== 'readable') { + return; + } + var buffer = chunk.buffer, byteOffset = chunk.byteOffset, byteLength = chunk.byteLength; + if (IsDetachedBuffer(buffer)) { + throw new TypeError('chunk\'s buffer is detached and so cannot be enqueued'); + } + var transferredBuffer = TransferArrayBuffer(buffer); + if (controller._pendingPullIntos.length > 0) { + var firstPendingPullInto = controller._pendingPullIntos.peek(); + if (IsDetachedBuffer(firstPendingPullInto.buffer)) { + throw new TypeError('The BYOB request\'s buffer has been detached and so cannot be filled with an enqueued chunk'); + } + ReadableByteStreamControllerInvalidateBYOBRequest(controller); + firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer); + if (firstPendingPullInto.readerType === 'none') { + ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto); + } + } + if (ReadableStreamHasDefaultReader(stream)) { + ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller); + if (ReadableStreamGetNumReadRequests(stream) === 0) { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + else { + if (controller._pendingPullIntos.length > 0) { + ReadableByteStreamControllerShiftPendingPullInto(controller); + } + var transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength); + ReadableStreamFulfillReadRequest(stream, transferredView, false); + } + } + else if (ReadableStreamHasBYOBReader(stream)) { + // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully. + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller); + } + else { + ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength); + } + ReadableByteStreamControllerCallPullIfNeeded(controller); +} +function ReadableByteStreamControllerError(controller, e) { + var stream = controller._controlledReadableByteStream; + if (stream._state !== 'readable') { + return; + } + ReadableByteStreamControllerClearPendingPullIntos(controller); + ResetQueue(controller); + ReadableByteStreamControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest) { + var entry = controller._queue.shift(); + controller._queueTotalSize -= entry.byteLength; + ReadableByteStreamControllerHandleQueueDrain(controller); + var view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength); + readRequest._chunkSteps(view); +} +function ReadableByteStreamControllerGetBYOBRequest(controller) { + if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled); + var byobRequest = Object.create(ReadableStreamBYOBRequest.prototype); + SetUpReadableStreamBYOBRequest(byobRequest, controller, view); + controller._byobRequest = byobRequest; + } + return controller._byobRequest; +} +function ReadableByteStreamControllerGetDesiredSize(controller) { + var state = controller._controlledReadableByteStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +function ReadableByteStreamControllerRespond(controller, bytesWritten) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (bytesWritten !== 0) { + throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream'); + } + } + else { + if (bytesWritten === 0) { + throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream'); + } + if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) { + throw new RangeError('bytesWritten out of range'); + } + } + firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer); + ReadableByteStreamControllerRespondInternal(controller, bytesWritten); +} +function ReadableByteStreamControllerRespondWithNewView(controller, view) { + var firstDescriptor = controller._pendingPullIntos.peek(); + var state = controller._controlledReadableByteStream._state; + if (state === 'closed') { + if (view.byteLength !== 0) { + throw new TypeError('The view\'s length must be 0 when calling respondWithNewView() on a closed stream'); + } + } + else { + if (view.byteLength === 0) { + throw new TypeError('The view\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'); + } + } + if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) { + throw new RangeError('The region specified by view does not match byobRequest'); + } + if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) { + throw new RangeError('The buffer of view has different capacity than byobRequest'); + } + if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) { + throw new RangeError('The region specified by view is larger than byobRequest'); + } + var viewByteLength = view.byteLength; + firstDescriptor.buffer = TransferArrayBuffer(view.buffer); + ReadableByteStreamControllerRespondInternal(controller, viewByteLength); +} +function SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize) { + controller._controlledReadableByteStream = stream; + controller._pullAgain = false; + controller._pulling = false; + controller._byobRequest = null; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._closeRequested = false; + controller._started = false; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._autoAllocateChunkSize = autoAllocateChunkSize; + controller._pendingPullIntos = new SimpleQueue(); + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableByteStreamControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableByteStreamControllerError(controller, r); + return null; + }); +} +function SetUpReadableByteStreamControllerFromUnderlyingSource(stream, underlyingByteSource, highWaterMark) { + var controller = Object.create(ReadableByteStreamController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingByteSource.start !== undefined) { + startAlgorithm = function () { return underlyingByteSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingByteSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingByteSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingByteSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingByteSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + var autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize; + if (autoAllocateChunkSize === 0) { + throw new TypeError('autoAllocateChunkSize must be greater than 0'); + } + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize); +} +function SetUpReadableStreamBYOBRequest(request, controller, view) { + request._associatedReadableByteStreamController = controller; + request._view = view; +} +// Helper functions for the ReadableStreamBYOBRequest. +function byobRequestBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBRequest.prototype.".concat(name, " can only be used on a ReadableStreamBYOBRequest")); +} +// Helper functions for the ReadableByteStreamController. +function byteStreamControllerBrandCheckException(name) { + return new TypeError("ReadableByteStreamController.prototype.".concat(name, " can only be used on a ReadableByteStreamController")); +} + +function convertReaderOptions(options, context) { + assertDictionary(options, context); + var mode = options === null || options === void 0 ? void 0 : options.mode; + return { + mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, "".concat(context, " has member 'mode' that")) + }; +} +function convertReadableStreamReaderMode(mode, context) { + mode = "".concat(mode); + if (mode !== 'byob') { + throw new TypeError("".concat(context, " '").concat(mode, "' is not a valid enumeration value for ReadableStreamReaderMode")); + } + return mode; +} +function convertByobReadOptions(options, context) { + var _a; + assertDictionary(options, context); + var min = (_a = options === null || options === void 0 ? void 0 : options.min) !== null && _a !== void 0 ? _a : 1; + return { + min: convertUnsignedLongLongWithEnforceRange(min, "".concat(context, " has member 'min' that")) + }; +} + +// Abstract operations for the ReadableStream. +function AcquireReadableStreamBYOBReader(stream) { + return new ReadableStreamBYOBReader(stream); +} +// ReadableStream API exposed for controllers. +function ReadableStreamAddReadIntoRequest(stream, readIntoRequest) { + stream._reader._readIntoRequests.push(readIntoRequest); +} +function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) { + var reader = stream._reader; + var readIntoRequest = reader._readIntoRequests.shift(); + if (done) { + readIntoRequest._closeSteps(chunk); + } + else { + readIntoRequest._chunkSteps(chunk); + } +} +function ReadableStreamGetNumReadIntoRequests(stream) { + return stream._reader._readIntoRequests.length; +} +function ReadableStreamHasBYOBReader(stream) { + var reader = stream._reader; + if (reader === undefined) { + return false; + } + if (!IsReadableStreamBYOBReader(reader)) { + return false; + } + return true; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +var ReadableStreamBYOBReader = /** @class */ (function () { + function ReadableStreamBYOBReader(stream) { + assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader'); + assertReadableStream(stream, 'First parameter'); + if (IsReadableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive reading by another reader'); + } + if (!IsReadableByteStreamController(stream._readableStreamController)) { + throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + + 'source'); + } + ReadableStreamReaderGenericInitialize(this, stream); + this._readIntoRequests = new SimpleQueue(); + } + Object.defineProperty(ReadableStreamBYOBReader.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get: function () { + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + ReadableStreamBYOBReader.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('cancel')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('cancel')); + } + return ReadableStreamReaderGenericCancel(this, reason); + }; + ReadableStreamBYOBReader.prototype.read = function (view, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStreamBYOBReader(this)) { + return promiseRejectedWith(byobReaderBrandCheckException('read')); + } + if (!ArrayBuffer.isView(view)) { + return promiseRejectedWith(new TypeError('view must be an array buffer view')); + } + if (view.byteLength === 0) { + return promiseRejectedWith(new TypeError('view must have non-zero byteLength')); + } + if (view.buffer.byteLength === 0) { + return promiseRejectedWith(new TypeError("view's buffer must have non-zero byteLength")); + } + if (IsDetachedBuffer(view.buffer)) { + return promiseRejectedWith(new TypeError('view\'s buffer has been detached')); + } + var options; + try { + options = convertByobReadOptions(rawOptions, 'options'); + } + catch (e) { + return promiseRejectedWith(e); + } + var min = options.min; + if (min === 0) { + return promiseRejectedWith(new TypeError('options.min must be greater than 0')); + } + if (!isDataView(view)) { + if (min > view.length) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s length')); + } + } + else if (min > view.byteLength) { + return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\'s byteLength')); + } + if (this._ownerReadableStream === undefined) { + return promiseRejectedWith(readerLockException('read from')); + } + var resolvePromise; + var rejectPromise; + var promise = newPromise(function (resolve, reject) { + resolvePromise = resolve; + rejectPromise = reject; + }); + var readIntoRequest = { + _chunkSteps: function (chunk) { return resolvePromise({ value: chunk, done: false }); }, + _closeSteps: function (chunk) { return resolvePromise({ value: chunk, done: true }); }, + _errorSteps: function (e) { return rejectPromise(e); } + }; + ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest); + return promise; + }; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + ReadableStreamBYOBReader.prototype.releaseLock = function () { + if (!IsReadableStreamBYOBReader(this)) { + throw byobReaderBrandCheckException('releaseLock'); + } + if (this._ownerReadableStream === undefined) { + return; + } + ReadableStreamBYOBReaderRelease(this); + }; + return ReadableStreamBYOBReader; +}()); +Object.defineProperties(ReadableStreamBYOBReader.prototype, { + cancel: { enumerable: true }, + read: { enumerable: true }, + releaseLock: { enumerable: true }, + closed: { enumerable: true } +}); +setFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel'); +setFunctionName(ReadableStreamBYOBReader.prototype.read, 'read'); +setFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamBYOBReader.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamBYOBReader', + configurable: true + }); +} +// Abstract operations for the readers. +function IsReadableStreamBYOBReader(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) { + return false; + } + return x instanceof ReadableStreamBYOBReader; +} +function ReadableStreamBYOBReaderRead(reader, view, min, readIntoRequest) { + var stream = reader._ownerReadableStream; + stream._disturbed = true; + if (stream._state === 'errored') { + readIntoRequest._errorSteps(stream._storedError); + } + else { + ReadableByteStreamControllerPullInto(stream._readableStreamController, view, min, readIntoRequest); + } +} +function ReadableStreamBYOBReaderRelease(reader) { + ReadableStreamReaderGenericRelease(reader); + var e = new TypeError('Reader was released'); + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); +} +function ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._errorSteps(e); + }); +} +// Helper functions for the ReadableStreamBYOBReader. +function byobReaderBrandCheckException(name) { + return new TypeError("ReadableStreamBYOBReader.prototype.".concat(name, " can only be used on a ReadableStreamBYOBReader")); +} + +function ExtractHighWaterMark(strategy, defaultHWM) { + var highWaterMark = strategy.highWaterMark; + if (highWaterMark === undefined) { + return defaultHWM; + } + if (NumberIsNaN(highWaterMark) || highWaterMark < 0) { + throw new RangeError('Invalid highWaterMark'); + } + return highWaterMark; +} +function ExtractSizeAlgorithm(strategy) { + var size = strategy.size; + if (!size) { + return function () { return 1; }; + } + return size; +} + +function convertQueuingStrategy(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + var size = init === null || init === void 0 ? void 0 : init.size; + return { + highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark), + size: size === undefined ? undefined : convertQueuingStrategySize(size, "".concat(context, " has member 'size' that")) + }; +} +function convertQueuingStrategySize(fn, context) { + assertFunction(fn, context); + return function (chunk) { return convertUnrestrictedDouble(fn(chunk)); }; +} + +function convertUnderlyingSink(original, context) { + assertDictionary(original, context); + var abort = original === null || original === void 0 ? void 0 : original.abort; + var close = original === null || original === void 0 ? void 0 : original.close; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + var write = original === null || original === void 0 ? void 0 : original.write; + return { + abort: abort === undefined ? + undefined : + convertUnderlyingSinkAbortCallback(abort, original, "".concat(context, " has member 'abort' that")), + close: close === undefined ? + undefined : + convertUnderlyingSinkCloseCallback(close, original, "".concat(context, " has member 'close' that")), + start: start === undefined ? + undefined : + convertUnderlyingSinkStartCallback(start, original, "".concat(context, " has member 'start' that")), + write: write === undefined ? + undefined : + convertUnderlyingSinkWriteCallback(write, original, "".concat(context, " has member 'write' that")), + type: type + }; +} +function convertUnderlyingSinkAbortCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; +} +function convertUnderlyingSinkCloseCallback(fn, original, context) { + assertFunction(fn, context); + return function () { return promiseCall(fn, original, []); }; +} +function convertUnderlyingSinkStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; +} +function convertUnderlyingSinkWriteCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; +} + +function assertWritableStream(x, context) { + if (!IsWritableStream(x)) { + throw new TypeError("".concat(context, " is not a WritableStream.")); + } +} + +function isAbortSignal(value) { + if (typeof value !== 'object' || value === null) { + return false; + } + try { + return typeof value.aborted === 'boolean'; + } + catch (_a) { + // AbortSignal.prototype.aborted throws if its brand check fails + return false; + } +} +var supportsAbortController = typeof AbortController === 'function'; +/** + * Construct a new AbortController, if supported by the platform. + * + * @internal + */ +function createAbortController() { + if (supportsAbortController) { + return new AbortController(); + } + return undefined; +} + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +var WritableStream = /** @class */ (function () { + function WritableStream(rawUnderlyingSink, rawStrategy) { + if (rawUnderlyingSink === void 0) { rawUnderlyingSink = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSink === undefined) { + rawUnderlyingSink = null; + } + else { + assertObject(rawUnderlyingSink, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter'); + InitializeWritableStream(this); + var type = underlyingSink.type; + if (type !== undefined) { + throw new RangeError('Invalid type is specified'); + } + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm); + } + Object.defineProperty(WritableStream.prototype, "locked", { + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get: function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('locked'); + } + return IsWritableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + WritableStream.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('abort')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer')); + } + return WritableStreamAbort(this, reason); + }; + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + WritableStream.prototype.close = function () { + if (!IsWritableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$2('close')); + } + if (IsWritableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer')); + } + if (WritableStreamCloseQueuedOrInFlight(this)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamClose(this); + }; + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + WritableStream.prototype.getWriter = function () { + if (!IsWritableStream(this)) { + throw streamBrandCheckException$2('getWriter'); + } + return AcquireWritableStreamDefaultWriter(this); + }; + return WritableStream; +}()); +Object.defineProperties(WritableStream.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + getWriter: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(WritableStream.prototype.abort, 'abort'); +setFunctionName(WritableStream.prototype.close, 'close'); +setFunctionName(WritableStream.prototype.getWriter, 'getWriter'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStream', + configurable: true + }); +} +// Abstract operations for the WritableStream. +function AcquireWritableStreamDefaultWriter(stream) { + return new WritableStreamDefaultWriter(stream); +} +// Throws if and only if startAlgorithm throws. +function CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(WritableStream.prototype); + InitializeWritableStream(stream); + var controller = Object.create(WritableStreamDefaultController.prototype); + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +function InitializeWritableStream(stream) { + stream._state = 'writable'; + // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is + // 'erroring' or 'errored'. May be set to an undefined value. + stream._storedError = undefined; + stream._writer = undefined; + // Initialize to undefined first because the constructor of the controller checks this + // variable to validate the caller. + stream._writableStreamController = undefined; + // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data + // producer without waiting for the queued writes to finish. + stream._writeRequests = new SimpleQueue(); + // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents + // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here. + stream._inFlightWriteRequest = undefined; + // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer + // has been detached. + stream._closeRequest = undefined; + // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it + // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here. + stream._inFlightCloseRequest = undefined; + // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached. + stream._pendingAbortRequest = undefined; + // The backpressure signal set by the controller. + stream._backpressure = false; +} +function IsWritableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) { + return false; + } + return x instanceof WritableStream; +} +function IsWritableStreamLocked(stream) { + if (stream._writer === undefined) { + return false; + } + return true; +} +function WritableStreamAbort(stream, reason) { + var _a; + if (stream._state === 'closed' || stream._state === 'errored') { + return promiseResolvedWith(undefined); + } + stream._writableStreamController._abortReason = reason; + (_a = stream._writableStreamController._abortController) === null || _a === void 0 ? void 0 : _a.abort(reason); + // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring', + // but it doesn't know that signaling abort runs author code that might have changed the state. + // Widen the type again by casting to WritableStreamState. + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseResolvedWith(undefined); + } + if (stream._pendingAbortRequest !== undefined) { + return stream._pendingAbortRequest._promise; + } + var wasAlreadyErroring = false; + if (state === 'erroring') { + wasAlreadyErroring = true; + // reason will not be used, so don't keep a reference to it. + reason = undefined; + } + var promise = newPromise(function (resolve, reject) { + stream._pendingAbortRequest = { + _promise: undefined, + _resolve: resolve, + _reject: reject, + _reason: reason, + _wasAlreadyErroring: wasAlreadyErroring + }; + }); + stream._pendingAbortRequest._promise = promise; + if (!wasAlreadyErroring) { + WritableStreamStartErroring(stream, reason); + } + return promise; +} +function WritableStreamClose(stream) { + var state = stream._state; + if (state === 'closed' || state === 'errored') { + return promiseRejectedWith(new TypeError("The stream (in ".concat(state, " state) is not in the writable state and cannot be closed"))); + } + var promise = newPromise(function (resolve, reject) { + var closeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._closeRequest = closeRequest; + }); + var writer = stream._writer; + if (writer !== undefined && stream._backpressure && state === 'writable') { + defaultWriterReadyPromiseResolve(writer); + } + WritableStreamDefaultControllerClose(stream._writableStreamController); + return promise; +} +// WritableStream API exposed for controllers. +function WritableStreamAddWriteRequest(stream) { + var promise = newPromise(function (resolve, reject) { + var writeRequest = { + _resolve: resolve, + _reject: reject + }; + stream._writeRequests.push(writeRequest); + }); + return promise; +} +function WritableStreamDealWithRejection(stream, error) { + var state = stream._state; + if (state === 'writable') { + WritableStreamStartErroring(stream, error); + return; + } + WritableStreamFinishErroring(stream); +} +function WritableStreamStartErroring(stream, reason) { + var controller = stream._writableStreamController; + stream._state = 'erroring'; + stream._storedError = reason; + var writer = stream._writer; + if (writer !== undefined) { + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason); + } + if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) { + WritableStreamFinishErroring(stream); + } +} +function WritableStreamFinishErroring(stream) { + stream._state = 'errored'; + stream._writableStreamController[ErrorSteps](); + var storedError = stream._storedError; + stream._writeRequests.forEach(function (writeRequest) { + writeRequest._reject(storedError); + }); + stream._writeRequests = new SimpleQueue(); + if (stream._pendingAbortRequest === undefined) { + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var abortRequest = stream._pendingAbortRequest; + stream._pendingAbortRequest = undefined; + if (abortRequest._wasAlreadyErroring) { + abortRequest._reject(storedError); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return; + } + var promise = stream._writableStreamController[AbortSteps](abortRequest._reason); + uponPromise(promise, function () { + abortRequest._resolve(); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }, function (reason) { + abortRequest._reject(reason); + WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream); + return null; + }); +} +function WritableStreamFinishInFlightWrite(stream) { + stream._inFlightWriteRequest._resolve(undefined); + stream._inFlightWriteRequest = undefined; +} +function WritableStreamFinishInFlightWriteWithError(stream, error) { + stream._inFlightWriteRequest._reject(error); + stream._inFlightWriteRequest = undefined; + WritableStreamDealWithRejection(stream, error); +} +function WritableStreamFinishInFlightClose(stream) { + stream._inFlightCloseRequest._resolve(undefined); + stream._inFlightCloseRequest = undefined; + var state = stream._state; + if (state === 'erroring') { + // The error was too late to do anything, so it is ignored. + stream._storedError = undefined; + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._resolve(); + stream._pendingAbortRequest = undefined; + } + } + stream._state = 'closed'; + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseResolve(writer); + } +} +function WritableStreamFinishInFlightCloseWithError(stream, error) { + stream._inFlightCloseRequest._reject(error); + stream._inFlightCloseRequest = undefined; + // Never execute sink abort() after sink close(). + if (stream._pendingAbortRequest !== undefined) { + stream._pendingAbortRequest._reject(error); + stream._pendingAbortRequest = undefined; + } + WritableStreamDealWithRejection(stream, error); +} +// TODO(ricea): Fix alphabetical order. +function WritableStreamCloseQueuedOrInFlight(stream) { + if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamHasOperationMarkedInFlight(stream) { + if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) { + return false; + } + return true; +} +function WritableStreamMarkCloseRequestInFlight(stream) { + stream._inFlightCloseRequest = stream._closeRequest; + stream._closeRequest = undefined; +} +function WritableStreamMarkFirstWriteRequestInFlight(stream) { + stream._inFlightWriteRequest = stream._writeRequests.shift(); +} +function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) { + if (stream._closeRequest !== undefined) { + stream._closeRequest._reject(stream._storedError); + stream._closeRequest = undefined; + } + var writer = stream._writer; + if (writer !== undefined) { + defaultWriterClosedPromiseReject(writer, stream._storedError); + } +} +function WritableStreamUpdateBackpressure(stream, backpressure) { + var writer = stream._writer; + if (writer !== undefined && backpressure !== stream._backpressure) { + if (backpressure) { + defaultWriterReadyPromiseReset(writer); + } + else { + defaultWriterReadyPromiseResolve(writer); + } + } + stream._backpressure = backpressure; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +var WritableStreamDefaultWriter = /** @class */ (function () { + function WritableStreamDefaultWriter(stream) { + assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter'); + assertWritableStream(stream, 'First parameter'); + if (IsWritableStreamLocked(stream)) { + throw new TypeError('This stream has already been locked for exclusive writing by another writer'); + } + this._ownerWritableStream = stream; + stream._writer = this; + var state = stream._state; + if (state === 'writable') { + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) { + defaultWriterReadyPromiseInitialize(this); + } + else { + defaultWriterReadyPromiseInitializeAsResolved(this); + } + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'erroring') { + defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError); + defaultWriterClosedPromiseInitialize(this); + } + else if (state === 'closed') { + defaultWriterReadyPromiseInitializeAsResolved(this); + defaultWriterClosedPromiseInitializeAsResolved(this); + } + else { + var storedError = stream._storedError; + defaultWriterReadyPromiseInitializeAsRejected(this, storedError); + defaultWriterClosedPromiseInitializeAsRejected(this, storedError); + } + } + Object.defineProperty(WritableStreamDefaultWriter.prototype, "closed", { + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('closed')); + } + return this._closedPromise; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "desiredSize", { + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('desiredSize'); + } + if (this._ownerWritableStream === undefined) { + throw defaultWriterLockException('desiredSize'); + } + return WritableStreamDefaultWriterGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultWriter.prototype, "ready", { + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get: function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('ready')); + } + return this._readyPromise; + }, + enumerable: false, + configurable: true + }); + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + WritableStreamDefaultWriter.prototype.abort = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('abort')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('abort')); + } + return WritableStreamDefaultWriterAbort(this, reason); + }; + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + WritableStreamDefaultWriter.prototype.close = function () { + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('close')); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return promiseRejectedWith(defaultWriterLockException('close')); + } + if (WritableStreamCloseQueuedOrInFlight(stream)) { + return promiseRejectedWith(new TypeError('Cannot close an already-closing stream')); + } + return WritableStreamDefaultWriterClose(this); + }; + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + WritableStreamDefaultWriter.prototype.releaseLock = function () { + if (!IsWritableStreamDefaultWriter(this)) { + throw defaultWriterBrandCheckException('releaseLock'); + } + var stream = this._ownerWritableStream; + if (stream === undefined) { + return; + } + WritableStreamDefaultWriterRelease(this); + }; + WritableStreamDefaultWriter.prototype.write = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsWritableStreamDefaultWriter(this)) { + return promiseRejectedWith(defaultWriterBrandCheckException('write')); + } + if (this._ownerWritableStream === undefined) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + return WritableStreamDefaultWriterWrite(this, chunk); + }; + return WritableStreamDefaultWriter; +}()); +Object.defineProperties(WritableStreamDefaultWriter.prototype, { + abort: { enumerable: true }, + close: { enumerable: true }, + releaseLock: { enumerable: true }, + write: { enumerable: true }, + closed: { enumerable: true }, + desiredSize: { enumerable: true }, + ready: { enumerable: true } +}); +setFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort'); +setFunctionName(WritableStreamDefaultWriter.prototype.close, 'close'); +setFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock'); +setFunctionName(WritableStreamDefaultWriter.prototype.write, 'write'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultWriter.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultWriter', + configurable: true + }); +} +// Abstract operations for the WritableStreamDefaultWriter. +function IsWritableStreamDefaultWriter(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultWriter; +} +// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check. +function WritableStreamDefaultWriterAbort(writer, reason) { + var stream = writer._ownerWritableStream; + return WritableStreamAbort(stream, reason); +} +function WritableStreamDefaultWriterClose(writer) { + var stream = writer._ownerWritableStream; + return WritableStreamClose(stream); +} +function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseResolvedWith(undefined); + } + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + return WritableStreamDefaultWriterClose(writer); +} +function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) { + if (writer._closedPromiseState === 'pending') { + defaultWriterClosedPromiseReject(writer, error); + } + else { + defaultWriterClosedPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) { + if (writer._readyPromiseState === 'pending') { + defaultWriterReadyPromiseReject(writer, error); + } + else { + defaultWriterReadyPromiseResetToRejected(writer, error); + } +} +function WritableStreamDefaultWriterGetDesiredSize(writer) { + var stream = writer._ownerWritableStream; + var state = stream._state; + if (state === 'errored' || state === 'erroring') { + return null; + } + if (state === 'closed') { + return 0; + } + return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController); +} +function WritableStreamDefaultWriterRelease(writer) { + var stream = writer._ownerWritableStream; + var releasedError = new TypeError("Writer was released and can no longer be used to monitor the stream's closedness"); + WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError); + // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not + // rejected until afterwards. This means that simply testing state will not work. + WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError); + stream._writer = undefined; + writer._ownerWritableStream = undefined; +} +function WritableStreamDefaultWriterWrite(writer, chunk) { + var stream = writer._ownerWritableStream; + var controller = stream._writableStreamController; + var chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk); + if (stream !== writer._ownerWritableStream) { + return promiseRejectedWith(defaultWriterLockException('write to')); + } + var state = stream._state; + if (state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') { + return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to')); + } + if (state === 'erroring') { + return promiseRejectedWith(stream._storedError); + } + var promise = WritableStreamAddWriteRequest(stream); + WritableStreamDefaultControllerWrite(controller, chunk, chunkSize); + return promise; +} +var closeSentinel = {}; +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +var WritableStreamDefaultController = /** @class */ (function () { + function WritableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(WritableStreamDefaultController.prototype, "abortReason", { + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('abortReason'); + } + return this._abortReason; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(WritableStreamDefaultController.prototype, "signal", { + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get: function () { + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('signal'); + } + if (this._abortController === undefined) { + // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`. + // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill, + // so instead we only implement support for `signal` if we find a global `AbortController` constructor. + throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported'); + } + return this._abortController.signal; + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + WritableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsWritableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$2('error'); + } + var state = this._controlledWritableStream._state; + if (state !== 'writable') { + // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so + // just treat it as a no-op. + return; + } + WritableStreamDefaultControllerError(this, e); + }; + /** @internal */ + WritableStreamDefaultController.prototype[AbortSteps] = function (reason) { + var result = this._abortAlgorithm(reason); + WritableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + WritableStreamDefaultController.prototype[ErrorSteps] = function () { + ResetQueue(this); + }; + return WritableStreamDefaultController; +}()); +Object.defineProperties(WritableStreamDefaultController.prototype, { + abortReason: { enumerable: true }, + signal: { enumerable: true }, + error: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(WritableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'WritableStreamDefaultController', + configurable: true + }); +} +// Abstract operations implementing interface required by the WritableStream. +function IsWritableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) { + return false; + } + return x instanceof WritableStreamDefaultController; +} +function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledWritableStream = stream; + stream._writableStreamController = controller; + // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly. + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._abortReason = undefined; + controller._abortController = createAbortController(); + controller._started = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._writeAlgorithm = writeAlgorithm; + controller._closeAlgorithm = closeAlgorithm; + controller._abortAlgorithm = abortAlgorithm; + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + var startResult = startAlgorithm(); + var startPromise = promiseResolvedWith(startResult); + uponPromise(startPromise, function () { + controller._started = true; + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (r) { + controller._started = true; + WritableStreamDealWithRejection(stream, r); + return null; + }); +} +function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) { + var controller = Object.create(WritableStreamDefaultController.prototype); + var startAlgorithm; + var writeAlgorithm; + var closeAlgorithm; + var abortAlgorithm; + if (underlyingSink.start !== undefined) { + startAlgorithm = function () { return underlyingSink.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSink.write !== undefined) { + writeAlgorithm = function (chunk) { return underlyingSink.write(chunk, controller); }; + } + else { + writeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.close !== undefined) { + closeAlgorithm = function () { return underlyingSink.close(); }; + } + else { + closeAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSink.abort !== undefined) { + abortAlgorithm = function (reason) { return underlyingSink.abort(reason); }; + } + else { + abortAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm); +} +// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls. +function WritableStreamDefaultControllerClearAlgorithms(controller) { + controller._writeAlgorithm = undefined; + controller._closeAlgorithm = undefined; + controller._abortAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +function WritableStreamDefaultControllerClose(controller) { + EnqueueValueWithSize(controller, closeSentinel, 0); + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +function WritableStreamDefaultControllerGetChunkSize(controller, chunk) { + try { + return controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE); + return 1; + } +} +function WritableStreamDefaultControllerGetDesiredSize(controller) { + return controller._strategyHWM - controller._queueTotalSize; +} +function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) { + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE); + return; + } + var stream = controller._controlledWritableStream; + if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); +} +// Abstract operations for the WritableStreamDefaultController. +function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) { + var stream = controller._controlledWritableStream; + if (!controller._started) { + return; + } + if (stream._inFlightWriteRequest !== undefined) { + return; + } + var state = stream._state; + if (state === 'erroring') { + WritableStreamFinishErroring(stream); + return; + } + if (controller._queue.length === 0) { + return; + } + var value = PeekQueueValue(controller); + if (value === closeSentinel) { + WritableStreamDefaultControllerProcessClose(controller); + } + else { + WritableStreamDefaultControllerProcessWrite(controller, value); + } +} +function WritableStreamDefaultControllerErrorIfNeeded(controller, error) { + if (controller._controlledWritableStream._state === 'writable') { + WritableStreamDefaultControllerError(controller, error); + } +} +function WritableStreamDefaultControllerProcessClose(controller) { + var stream = controller._controlledWritableStream; + WritableStreamMarkCloseRequestInFlight(stream); + DequeueValue(controller); + var sinkClosePromise = controller._closeAlgorithm(); + WritableStreamDefaultControllerClearAlgorithms(controller); + uponPromise(sinkClosePromise, function () { + WritableStreamFinishInFlightClose(stream); + return null; + }, function (reason) { + WritableStreamFinishInFlightCloseWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerProcessWrite(controller, chunk) { + var stream = controller._controlledWritableStream; + WritableStreamMarkFirstWriteRequestInFlight(stream); + var sinkWritePromise = controller._writeAlgorithm(chunk); + uponPromise(sinkWritePromise, function () { + WritableStreamFinishInFlightWrite(stream); + var state = stream._state; + DequeueValue(controller); + if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') { + var backpressure = WritableStreamDefaultControllerGetBackpressure(controller); + WritableStreamUpdateBackpressure(stream, backpressure); + } + WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller); + return null; + }, function (reason) { + if (stream._state === 'writable') { + WritableStreamDefaultControllerClearAlgorithms(controller); + } + WritableStreamFinishInFlightWriteWithError(stream, reason); + return null; + }); +} +function WritableStreamDefaultControllerGetBackpressure(controller) { + var desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller); + return desiredSize <= 0; +} +// A client of WritableStreamDefaultController may use these functions directly to bypass state check. +function WritableStreamDefaultControllerError(controller, error) { + var stream = controller._controlledWritableStream; + WritableStreamDefaultControllerClearAlgorithms(controller); + WritableStreamStartErroring(stream, error); +} +// Helper functions for the WritableStream. +function streamBrandCheckException$2(name) { + return new TypeError("WritableStream.prototype.".concat(name, " can only be used on a WritableStream")); +} +// Helper functions for the WritableStreamDefaultController. +function defaultControllerBrandCheckException$2(name) { + return new TypeError("WritableStreamDefaultController.prototype.".concat(name, " can only be used on a WritableStreamDefaultController")); +} +// Helper functions for the WritableStreamDefaultWriter. +function defaultWriterBrandCheckException(name) { + return new TypeError("WritableStreamDefaultWriter.prototype.".concat(name, " can only be used on a WritableStreamDefaultWriter")); +} +function defaultWriterLockException(name) { + return new TypeError('Cannot ' + name + ' a stream using a released writer'); +} +function defaultWriterClosedPromiseInitialize(writer) { + writer._closedPromise = newPromise(function (resolve, reject) { + writer._closedPromise_resolve = resolve; + writer._closedPromise_reject = reject; + writer._closedPromiseState = 'pending'; + }); +} +function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseReject(writer, reason); +} +function defaultWriterClosedPromiseInitializeAsResolved(writer) { + defaultWriterClosedPromiseInitialize(writer); + defaultWriterClosedPromiseResolve(writer); +} +function defaultWriterClosedPromiseReject(writer, reason) { + if (writer._closedPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._closedPromise); + writer._closedPromise_reject(reason); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'rejected'; +} +function defaultWriterClosedPromiseResetToRejected(writer, reason) { + defaultWriterClosedPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterClosedPromiseResolve(writer) { + if (writer._closedPromise_resolve === undefined) { + return; + } + writer._closedPromise_resolve(undefined); + writer._closedPromise_resolve = undefined; + writer._closedPromise_reject = undefined; + writer._closedPromiseState = 'resolved'; +} +function defaultWriterReadyPromiseInitialize(writer) { + writer._readyPromise = newPromise(function (resolve, reject) { + writer._readyPromise_resolve = resolve; + writer._readyPromise_reject = reject; + }); + writer._readyPromiseState = 'pending'; +} +function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseReject(writer, reason); +} +function defaultWriterReadyPromiseInitializeAsResolved(writer) { + defaultWriterReadyPromiseInitialize(writer); + defaultWriterReadyPromiseResolve(writer); +} +function defaultWriterReadyPromiseReject(writer, reason) { + if (writer._readyPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(writer._readyPromise); + writer._readyPromise_reject(reason); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'rejected'; +} +function defaultWriterReadyPromiseReset(writer) { + defaultWriterReadyPromiseInitialize(writer); +} +function defaultWriterReadyPromiseResetToRejected(writer, reason) { + defaultWriterReadyPromiseInitializeAsRejected(writer, reason); +} +function defaultWriterReadyPromiseResolve(writer) { + if (writer._readyPromise_resolve === undefined) { + return; + } + writer._readyPromise_resolve(undefined); + writer._readyPromise_resolve = undefined; + writer._readyPromise_reject = undefined; + writer._readyPromiseState = 'fulfilled'; +} + +/// +function getGlobals() { + if (typeof globalThis !== 'undefined') { + return globalThis; + } + else if (typeof self !== 'undefined') { + return self; + } + else if (typeof global !== 'undefined') { + return global; + } + return undefined; +} +var globals = getGlobals(); + +/// +function isDOMExceptionConstructor(ctor) { + if (!(typeof ctor === 'function' || typeof ctor === 'object')) { + return false; + } + if (ctor.name !== 'DOMException') { + return false; + } + try { + new ctor(); + return true; + } + catch (_a) { + return false; + } +} +/** + * Support: + * - Web browsers + * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87) + */ +function getFromGlobal() { + var ctor = globals === null || globals === void 0 ? void 0 : globals.DOMException; + return isDOMExceptionConstructor(ctor) ? ctor : undefined; +} +/** + * Support: + * - All platforms + */ +function createPolyfill() { + // eslint-disable-next-line @typescript-eslint/no-shadow + var ctor = function DOMException(message, name) { + this.message = message || ''; + this.name = name || 'Error'; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, this.constructor); + } + }; + setFunctionName(ctor, 'DOMException'); + ctor.prototype = Object.create(Error.prototype); + Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true }); + return ctor; +} +// eslint-disable-next-line @typescript-eslint/no-redeclare +var DOMException = getFromGlobal() || createPolyfill(); + +function ReadableStreamPipeTo(source, dest, preventClose, preventAbort, preventCancel, signal) { + var reader = AcquireReadableStreamDefaultReader(source); + var writer = AcquireWritableStreamDefaultWriter(dest); + source._disturbed = true; + var shuttingDown = false; + // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown. + var currentWrite = promiseResolvedWith(undefined); + return newPromise(function (resolve, reject) { + var abortAlgorithm; + if (signal !== undefined) { + abortAlgorithm = function () { + var error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError'); + var actions = []; + if (!preventAbort) { + actions.push(function () { + if (dest._state === 'writable') { + return WritableStreamAbort(dest, error); + } + return promiseResolvedWith(undefined); + }); + } + if (!preventCancel) { + actions.push(function () { + if (source._state === 'readable') { + return ReadableStreamCancel(source, error); + } + return promiseResolvedWith(undefined); + }); + } + shutdownWithAction(function () { return Promise.all(actions.map(function (action) { return action(); })); }, true, error); + }; + if (signal.aborted) { + abortAlgorithm(); + return; + } + signal.addEventListener('abort', abortAlgorithm); + } + // Using reader and writer, read all chunks from this and write them to dest + // - Backpressure must be enforced + // - Shutdown must stop all activity + function pipeLoop() { + return newPromise(function (resolveLoop, rejectLoop) { + function next(done) { + if (done) { + resolveLoop(); + } + else { + // Use `PerformPromiseThen` instead of `uponPromise` to avoid + // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers + PerformPromiseThen(pipeStep(), next, rejectLoop); + } + } + next(false); + }); + } + function pipeStep() { + if (shuttingDown) { + return promiseResolvedWith(true); + } + return PerformPromiseThen(writer._readyPromise, function () { + return newPromise(function (resolveRead, rejectRead) { + ReadableStreamDefaultReaderRead(reader, { + _chunkSteps: function (chunk) { + currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop); + resolveRead(false); + }, + _closeSteps: function () { return resolveRead(true); }, + _errorSteps: rejectRead + }); + }); + }); + } + // Errors must be propagated forward + isOrBecomesErrored(source, reader._closedPromise, function (storedError) { + if (!preventAbort) { + shutdownWithAction(function () { return WritableStreamAbort(dest, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Errors must be propagated backward + isOrBecomesErrored(dest, writer._closedPromise, function (storedError) { + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, storedError); }, true, storedError); + } + else { + shutdown(true, storedError); + } + return null; + }); + // Closing must be propagated forward + isOrBecomesClosed(source, reader._closedPromise, function () { + if (!preventClose) { + shutdownWithAction(function () { return WritableStreamDefaultWriterCloseWithErrorPropagation(writer); }); + } + else { + shutdown(); + } + return null; + }); + // Closing must be propagated backward + if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') { + var destClosed_1 = new TypeError('the destination writable stream closed before all data could be piped to it'); + if (!preventCancel) { + shutdownWithAction(function () { return ReadableStreamCancel(source, destClosed_1); }, true, destClosed_1); + } + else { + shutdown(true, destClosed_1); + } + } + setPromiseIsHandledToTrue(pipeLoop()); + function waitForWritesToFinish() { + // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait + // for that too. + var oldCurrentWrite = currentWrite; + return PerformPromiseThen(currentWrite, function () { return oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined; }); + } + function isOrBecomesErrored(stream, promise, action) { + if (stream._state === 'errored') { + action(stream._storedError); + } + else { + uponRejection(promise, action); + } + } + function isOrBecomesClosed(stream, promise, action) { + if (stream._state === 'closed') { + action(); + } + else { + uponFulfillment(promise, action); + } + } + function shutdownWithAction(action, originalIsError, originalError) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), doTheRest); + } + else { + doTheRest(); + } + function doTheRest() { + uponPromise(action(), function () { return finalize(originalIsError, originalError); }, function (newError) { return finalize(true, newError); }); + return null; + } + } + function shutdown(isError, error) { + if (shuttingDown) { + return; + } + shuttingDown = true; + if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) { + uponFulfillment(waitForWritesToFinish(), function () { return finalize(isError, error); }); + } + else { + finalize(isError, error); + } + } + function finalize(isError, error) { + WritableStreamDefaultWriterRelease(writer); + ReadableStreamReaderGenericRelease(reader); + if (signal !== undefined) { + signal.removeEventListener('abort', abortAlgorithm); + } + if (isError) { + reject(error); + } + else { + resolve(undefined); + } + return null; + } + }); +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +var ReadableStreamDefaultController = /** @class */ (function () { + function ReadableStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(ReadableStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get: function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('desiredSize'); + } + return ReadableStreamDefaultControllerGetDesiredSize(this); + }, + enumerable: false, + configurable: true + }); + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + ReadableStreamDefaultController.prototype.close = function () { + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('close'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits close'); + } + ReadableStreamDefaultControllerClose(this); + }; + ReadableStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('enqueue'); + } + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) { + throw new TypeError('The stream is not in a state that permits enqueue'); + } + return ReadableStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + ReadableStreamDefaultController.prototype.error = function (e) { + if (e === void 0) { e = undefined; } + if (!IsReadableStreamDefaultController(this)) { + throw defaultControllerBrandCheckException$1('error'); + } + ReadableStreamDefaultControllerError(this, e); + }; + /** @internal */ + ReadableStreamDefaultController.prototype[CancelSteps] = function (reason) { + ResetQueue(this); + var result = this._cancelAlgorithm(reason); + ReadableStreamDefaultControllerClearAlgorithms(this); + return result; + }; + /** @internal */ + ReadableStreamDefaultController.prototype[PullSteps] = function (readRequest) { + var stream = this._controlledReadableStream; + if (this._queue.length > 0) { + var chunk = DequeueValue(this); + if (this._closeRequested && this._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(this); + ReadableStreamClose(stream); + } + else { + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + readRequest._chunkSteps(chunk); + } + else { + ReadableStreamAddReadRequest(stream, readRequest); + ReadableStreamDefaultControllerCallPullIfNeeded(this); + } + }; + /** @internal */ + ReadableStreamDefaultController.prototype[ReleaseSteps] = function () { + // Do nothing. + }; + return ReadableStreamDefaultController; +}()); +Object.defineProperties(ReadableStreamDefaultController.prototype, { + close: { enumerable: true }, + enqueue: { enumerable: true }, + error: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(ReadableStreamDefaultController.prototype.close, 'close'); +setFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(ReadableStreamDefaultController.prototype.error, 'error'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStreamDefaultController', + configurable: true + }); +} +// Abstract operations for the ReadableStreamDefaultController. +function IsReadableStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) { + return false; + } + return x instanceof ReadableStreamDefaultController; +} +function ReadableStreamDefaultControllerCallPullIfNeeded(controller) { + var shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller); + if (!shouldPull) { + return; + } + if (controller._pulling) { + controller._pullAgain = true; + return; + } + controller._pulling = true; + var pullPromise = controller._pullAlgorithm(); + uponPromise(pullPromise, function () { + controller._pulling = false; + if (controller._pullAgain) { + controller._pullAgain = false; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + } + return null; + }, function (e) { + ReadableStreamDefaultControllerError(controller, e); + return null; + }); +} +function ReadableStreamDefaultControllerShouldCallPull(controller) { + var stream = controller._controlledReadableStream; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return false; + } + if (!controller._started) { + return false; + } + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + return true; + } + var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller); + if (desiredSize > 0) { + return true; + } + return false; +} +function ReadableStreamDefaultControllerClearAlgorithms(controller) { + controller._pullAlgorithm = undefined; + controller._cancelAlgorithm = undefined; + controller._strategySizeAlgorithm = undefined; +} +// A client of ReadableStreamDefaultController may use these functions directly to bypass state check. +function ReadableStreamDefaultControllerClose(controller) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + controller._closeRequested = true; + if (controller._queue.length === 0) { + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamClose(stream); + } +} +function ReadableStreamDefaultControllerEnqueue(controller, chunk) { + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) { + return; + } + var stream = controller._controlledReadableStream; + if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) { + ReadableStreamFulfillReadRequest(stream, chunk, false); + } + else { + var chunkSize = void 0; + try { + chunkSize = controller._strategySizeAlgorithm(chunk); + } + catch (chunkSizeE) { + ReadableStreamDefaultControllerError(controller, chunkSizeE); + throw chunkSizeE; + } + try { + EnqueueValueWithSize(controller, chunk, chunkSize); + } + catch (enqueueE) { + ReadableStreamDefaultControllerError(controller, enqueueE); + throw enqueueE; + } + } + ReadableStreamDefaultControllerCallPullIfNeeded(controller); +} +function ReadableStreamDefaultControllerError(controller, e) { + var stream = controller._controlledReadableStream; + if (stream._state !== 'readable') { + return; + } + ResetQueue(controller); + ReadableStreamDefaultControllerClearAlgorithms(controller); + ReadableStreamError(stream, e); +} +function ReadableStreamDefaultControllerGetDesiredSize(controller) { + var state = controller._controlledReadableStream._state; + if (state === 'errored') { + return null; + } + if (state === 'closed') { + return 0; + } + return controller._strategyHWM - controller._queueTotalSize; +} +// This is used in the implementation of TransformStream. +function ReadableStreamDefaultControllerHasBackpressure(controller) { + if (ReadableStreamDefaultControllerShouldCallPull(controller)) { + return false; + } + return true; +} +function ReadableStreamDefaultControllerCanCloseOrEnqueue(controller) { + var state = controller._controlledReadableStream._state; + if (!controller._closeRequested && state === 'readable') { + return true; + } + return false; +} +function SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + controller._controlledReadableStream = stream; + controller._queue = undefined; + controller._queueTotalSize = undefined; + ResetQueue(controller); + controller._started = false; + controller._closeRequested = false; + controller._pullAgain = false; + controller._pulling = false; + controller._strategySizeAlgorithm = sizeAlgorithm; + controller._strategyHWM = highWaterMark; + controller._pullAlgorithm = pullAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + stream._readableStreamController = controller; + var startResult = startAlgorithm(); + uponPromise(promiseResolvedWith(startResult), function () { + controller._started = true; + ReadableStreamDefaultControllerCallPullIfNeeded(controller); + return null; + }, function (r) { + ReadableStreamDefaultControllerError(controller, r); + return null; + }); +} +function SetUpReadableStreamDefaultControllerFromUnderlyingSource(stream, underlyingSource, highWaterMark, sizeAlgorithm) { + var controller = Object.create(ReadableStreamDefaultController.prototype); + var startAlgorithm; + var pullAlgorithm; + var cancelAlgorithm; + if (underlyingSource.start !== undefined) { + startAlgorithm = function () { return underlyingSource.start(controller); }; + } + else { + startAlgorithm = function () { return undefined; }; + } + if (underlyingSource.pull !== undefined) { + pullAlgorithm = function () { return underlyingSource.pull(controller); }; + } + else { + pullAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (underlyingSource.cancel !== undefined) { + cancelAlgorithm = function (reason) { return underlyingSource.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); +} +// Helper functions for the ReadableStreamDefaultController. +function defaultControllerBrandCheckException$1(name) { + return new TypeError("ReadableStreamDefaultController.prototype.".concat(name, " can only be used on a ReadableStreamDefaultController")); +} + +function ReadableStreamTee(stream, cloneForBranch2) { + if (IsReadableByteStreamController(stream._readableStreamController)) { + return ReadableByteStreamTee(stream); + } + return ReadableStreamDefaultTee(stream); +} +function ReadableStreamDefaultTee(stream, cloneForBranch2) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgain = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function pullAlgorithm() { + if (reading) { + readAgain = true; + return promiseResolvedWith(undefined); + } + reading = true; + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgain = false; + var chunk1 = chunk; + var chunk2 = chunk; + // There is no way to access the cloning code right now in the reference implementation. + // If we add one then we'll need an implementation for serializable objects. + // if (!canceled2 && cloneForBranch2) { + // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2)); + // } + if (!canceled1) { + ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgain) { + pullAlgorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableStreamDefaultControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableStreamDefaultControllerClose(branch2._readableStreamController); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + // do nothing + } + branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm); + branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm); + uponRejection(reader._closedPromise, function (r) { + ReadableStreamDefaultControllerError(branch1._readableStreamController, r); + ReadableStreamDefaultControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + return [branch1, branch2]; +} +function ReadableByteStreamTee(stream) { + var reader = AcquireReadableStreamDefaultReader(stream); + var reading = false; + var readAgainForBranch1 = false; + var readAgainForBranch2 = false; + var canceled1 = false; + var canceled2 = false; + var reason1; + var reason2; + var branch1; + var branch2; + var resolveCancelPromise; + var cancelPromise = newPromise(function (resolve) { + resolveCancelPromise = resolve; + }); + function forwardReaderError(thisReader) { + uponRejection(thisReader._closedPromise, function (r) { + if (thisReader !== reader) { + return null; + } + ReadableByteStreamControllerError(branch1._readableStreamController, r); + ReadableByteStreamControllerError(branch2._readableStreamController, r); + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + return null; + }); + } + function pullWithDefaultReader() { + if (IsReadableStreamBYOBReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamDefaultReader(stream); + forwardReaderError(reader); + } + var readRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var chunk1 = chunk; + var chunk2 = chunk; + if (!canceled1 && !canceled2) { + try { + chunk2 = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(branch1._readableStreamController, cloneE); + ReadableByteStreamControllerError(branch2._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + } + if (!canceled1) { + ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1); + } + if (!canceled2) { + ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function () { + reading = false; + if (!canceled1) { + ReadableByteStreamControllerClose(branch1._readableStreamController); + } + if (!canceled2) { + ReadableByteStreamControllerClose(branch2._readableStreamController); + } + if (branch1._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch1._readableStreamController, 0); + } + if (branch2._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(branch2._readableStreamController, 0); + } + if (!canceled1 || !canceled2) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamDefaultReaderRead(reader, readRequest); + } + function pullWithBYOBReader(view, forBranch2) { + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamReaderGenericRelease(reader); + reader = AcquireReadableStreamBYOBReader(stream); + forwardReaderError(reader); + } + var byobBranch = forBranch2 ? branch2 : branch1; + var otherBranch = forBranch2 ? branch1 : branch2; + var readIntoRequest = { + _chunkSteps: function (chunk) { + // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using + // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let + // successful synchronously-available reads get ahead of asynchronously-available errors. + _queueMicrotask(function () { + readAgainForBranch1 = false; + readAgainForBranch2 = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!otherCanceled) { + var clonedChunk = void 0; + try { + clonedChunk = CloneAsUint8Array(chunk); + } + catch (cloneE) { + ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE); + ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE); + resolveCancelPromise(ReadableStreamCancel(stream, cloneE)); + return; + } + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk); + } + else if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + reading = false; + if (readAgainForBranch1) { + pull1Algorithm(); + } + else if (readAgainForBranch2) { + pull2Algorithm(); + } + }); + }, + _closeSteps: function (chunk) { + reading = false; + var byobCanceled = forBranch2 ? canceled2 : canceled1; + var otherCanceled = forBranch2 ? canceled1 : canceled2; + if (!byobCanceled) { + ReadableByteStreamControllerClose(byobBranch._readableStreamController); + } + if (!otherCanceled) { + ReadableByteStreamControllerClose(otherBranch._readableStreamController); + } + if (chunk !== undefined) { + if (!byobCanceled) { + ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk); + } + if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) { + ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0); + } + } + if (!byobCanceled || !otherCanceled) { + resolveCancelPromise(undefined); + } + }, + _errorSteps: function () { + reading = false; + } + }; + ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest); + } + function pull1Algorithm() { + if (reading) { + readAgainForBranch1 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, false); + } + return promiseResolvedWith(undefined); + } + function pull2Algorithm() { + if (reading) { + readAgainForBranch2 = true; + return promiseResolvedWith(undefined); + } + reading = true; + var byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController); + if (byobRequest === null) { + pullWithDefaultReader(); + } + else { + pullWithBYOBReader(byobRequest._view, true); + } + return promiseResolvedWith(undefined); + } + function cancel1Algorithm(reason) { + canceled1 = true; + reason1 = reason; + if (canceled2) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function cancel2Algorithm(reason) { + canceled2 = true; + reason2 = reason; + if (canceled1) { + var compositeReason = CreateArrayFromList([reason1, reason2]); + var cancelResult = ReadableStreamCancel(stream, compositeReason); + resolveCancelPromise(cancelResult); + } + return cancelPromise; + } + function startAlgorithm() { + return; + } + branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm); + branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm); + forwardReaderError(reader); + return [branch1, branch2]; +} + +function isReadableStreamLike(stream) { + return typeIsObject(stream) && typeof stream.getReader !== 'undefined'; +} + +function ReadableStreamFrom(source) { + if (isReadableStreamLike(source)) { + return ReadableStreamFromDefaultReader(source.getReader()); + } + return ReadableStreamFromIterable(source); +} +function ReadableStreamFromIterable(asyncIterable) { + var stream; + var iteratorRecord = GetIterator(asyncIterable, 'async'); + var startAlgorithm = noop; + function pullAlgorithm() { + var nextResult; + try { + nextResult = IteratorNext(iteratorRecord); + } + catch (e) { + return promiseRejectedWith(e); + } + var nextPromise = promiseResolvedWith(nextResult); + return transformPromiseWith(nextPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object'); + } + var done = IteratorComplete(iterResult); + if (done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = IteratorValue(iterResult); + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + var iterator = iteratorRecord.iterator; + var returnMethod; + try { + returnMethod = GetMethod(iterator, 'return'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (returnMethod === undefined) { + return promiseResolvedWith(undefined); + } + var returnResult; + try { + returnResult = reflectCall(returnMethod, iterator, [reason]); + } + catch (e) { + return promiseRejectedWith(e); + } + var returnPromise = promiseResolvedWith(returnResult); + return transformPromiseWith(returnPromise, function (iterResult) { + if (!typeIsObject(iterResult)) { + throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object'); + } + return undefined; + }); + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} +function ReadableStreamFromDefaultReader(reader) { + var stream; + var startAlgorithm = noop; + function pullAlgorithm() { + var readPromise; + try { + readPromise = reader.read(); + } + catch (e) { + return promiseRejectedWith(e); + } + return transformPromiseWith(readPromise, function (readResult) { + if (!typeIsObject(readResult)) { + throw new TypeError('The promise returned by the reader.read() method must fulfill with an object'); + } + if (readResult.done) { + ReadableStreamDefaultControllerClose(stream._readableStreamController); + } + else { + var value = readResult.value; + ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value); + } + }); + } + function cancelAlgorithm(reason) { + try { + return promiseResolvedWith(reader.cancel(reason)); + } + catch (e) { + return promiseRejectedWith(e); + } + } + stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0); + return stream; +} + +function convertUnderlyingDefaultOrByteSource(source, context) { + assertDictionary(source, context); + var original = source; + var autoAllocateChunkSize = original === null || original === void 0 ? void 0 : original.autoAllocateChunkSize; + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var pull = original === null || original === void 0 ? void 0 : original.pull; + var start = original === null || original === void 0 ? void 0 : original.start; + var type = original === null || original === void 0 ? void 0 : original.type; + return { + autoAllocateChunkSize: autoAllocateChunkSize === undefined ? + undefined : + convertUnsignedLongLongWithEnforceRange(autoAllocateChunkSize, "".concat(context, " has member 'autoAllocateChunkSize' that")), + cancel: cancel === undefined ? + undefined : + convertUnderlyingSourceCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + pull: pull === undefined ? + undefined : + convertUnderlyingSourcePullCallback(pull, original, "".concat(context, " has member 'pull' that")), + start: start === undefined ? + undefined : + convertUnderlyingSourceStartCallback(start, original, "".concat(context, " has member 'start' that")), + type: type === undefined ? undefined : convertReadableStreamType(type, "".concat(context, " has member 'type' that")) + }; +} +function convertUnderlyingSourceCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; +} +function convertUnderlyingSourcePullCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; +} +function convertUnderlyingSourceStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; +} +function convertReadableStreamType(type, context) { + type = "".concat(type); + if (type !== 'bytes') { + throw new TypeError("".concat(context, " '").concat(type, "' is not a valid enumeration value for ReadableStreamType")); + } + return type; +} + +function convertIteratorOptions(options, context) { + assertDictionary(options, context); + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + return { preventCancel: Boolean(preventCancel) }; +} + +function convertPipeOptions(options, context) { + assertDictionary(options, context); + var preventAbort = options === null || options === void 0 ? void 0 : options.preventAbort; + var preventCancel = options === null || options === void 0 ? void 0 : options.preventCancel; + var preventClose = options === null || options === void 0 ? void 0 : options.preventClose; + var signal = options === null || options === void 0 ? void 0 : options.signal; + if (signal !== undefined) { + assertAbortSignal(signal, "".concat(context, " has member 'signal' that")); + } + return { + preventAbort: Boolean(preventAbort), + preventCancel: Boolean(preventCancel), + preventClose: Boolean(preventClose), + signal: signal + }; +} +function assertAbortSignal(signal, context) { + if (!isAbortSignal(signal)) { + throw new TypeError("".concat(context, " is not an AbortSignal.")); + } +} + +function convertReadableWritablePair(pair, context) { + assertDictionary(pair, context); + var readable = pair === null || pair === void 0 ? void 0 : pair.readable; + assertRequiredField(readable, 'readable', 'ReadableWritablePair'); + assertReadableStream(readable, "".concat(context, " has member 'readable' that")); + var writable = pair === null || pair === void 0 ? void 0 : pair.writable; + assertRequiredField(writable, 'writable', 'ReadableWritablePair'); + assertWritableStream(writable, "".concat(context, " has member 'writable' that")); + return { readable: readable, writable: writable }; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +var ReadableStream = /** @class */ (function () { + function ReadableStream(rawUnderlyingSource, rawStrategy) { + if (rawUnderlyingSource === void 0) { rawUnderlyingSource = {}; } + if (rawStrategy === void 0) { rawStrategy = {}; } + if (rawUnderlyingSource === undefined) { + rawUnderlyingSource = null; + } + else { + assertObject(rawUnderlyingSource, 'First parameter'); + } + var strategy = convertQueuingStrategy(rawStrategy, 'Second parameter'); + var underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter'); + InitializeReadableStream(this); + if (underlyingSource.type === 'bytes') { + if (strategy.size !== undefined) { + throw new RangeError('The strategy for a byte stream cannot have a size function'); + } + var highWaterMark = ExtractHighWaterMark(strategy, 0); + SetUpReadableByteStreamControllerFromUnderlyingSource(this, underlyingSource, highWaterMark); + } + else { + var sizeAlgorithm = ExtractSizeAlgorithm(strategy); + var highWaterMark = ExtractHighWaterMark(strategy, 1); + SetUpReadableStreamDefaultControllerFromUnderlyingSource(this, underlyingSource, highWaterMark, sizeAlgorithm); + } + } + Object.defineProperty(ReadableStream.prototype, "locked", { + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get: function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('locked'); + } + return IsReadableStreamLocked(this); + }, + enumerable: false, + configurable: true + }); + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + ReadableStream.prototype.cancel = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('cancel')); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader')); + } + return ReadableStreamCancel(this, reason); + }; + ReadableStream.prototype.getReader = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('getReader'); + } + var options = convertReaderOptions(rawOptions, 'First parameter'); + if (options.mode === undefined) { + return AcquireReadableStreamDefaultReader(this); + } + return AcquireReadableStreamBYOBReader(this); + }; + ReadableStream.prototype.pipeThrough = function (rawTransform, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('pipeThrough'); + } + assertRequiredArgument(rawTransform, 1, 'pipeThrough'); + var transform = convertReadableWritablePair(rawTransform, 'First parameter'); + var options = convertPipeOptions(rawOptions, 'Second parameter'); + if (IsReadableStreamLocked(this)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream'); + } + if (IsWritableStreamLocked(transform.writable)) { + throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream'); + } + var promise = ReadableStreamPipeTo(this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + setPromiseIsHandledToTrue(promise); + return transform.readable; + }; + ReadableStream.prototype.pipeTo = function (destination, rawOptions) { + if (rawOptions === void 0) { rawOptions = {}; } + if (!IsReadableStream(this)) { + return promiseRejectedWith(streamBrandCheckException$1('pipeTo')); + } + if (destination === undefined) { + return promiseRejectedWith("Parameter 1 is required in 'pipeTo'."); + } + if (!IsWritableStream(destination)) { + return promiseRejectedWith(new TypeError("ReadableStream.prototype.pipeTo's first argument must be a WritableStream")); + } + var options; + try { + options = convertPipeOptions(rawOptions, 'Second parameter'); + } + catch (e) { + return promiseRejectedWith(e); + } + if (IsReadableStreamLocked(this)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')); + } + if (IsWritableStreamLocked(destination)) { + return promiseRejectedWith(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')); + } + return ReadableStreamPipeTo(this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal); + }; + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + ReadableStream.prototype.tee = function () { + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('tee'); + } + var branches = ReadableStreamTee(this); + return CreateArrayFromList(branches); + }; + ReadableStream.prototype.values = function (rawOptions) { + if (rawOptions === void 0) { rawOptions = undefined; } + if (!IsReadableStream(this)) { + throw streamBrandCheckException$1('values'); + } + var options = convertIteratorOptions(rawOptions, 'First parameter'); + return AcquireReadableStreamAsyncIterator(this, options.preventCancel); + }; + ReadableStream.prototype[SymbolAsyncIterator] = function (options) { + // Stub implementation, overridden below + return this.values(options); + }; + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + ReadableStream.from = function (asyncIterable) { + return ReadableStreamFrom(asyncIterable); + }; + return ReadableStream; +}()); +Object.defineProperties(ReadableStream, { + from: { enumerable: true } +}); +Object.defineProperties(ReadableStream.prototype, { + cancel: { enumerable: true }, + getReader: { enumerable: true }, + pipeThrough: { enumerable: true }, + pipeTo: { enumerable: true }, + tee: { enumerable: true }, + values: { enumerable: true }, + locked: { enumerable: true } +}); +setFunctionName(ReadableStream.from, 'from'); +setFunctionName(ReadableStream.prototype.cancel, 'cancel'); +setFunctionName(ReadableStream.prototype.getReader, 'getReader'); +setFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough'); +setFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo'); +setFunctionName(ReadableStream.prototype.tee, 'tee'); +setFunctionName(ReadableStream.prototype.values, 'values'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ReadableStream.prototype, SymbolPolyfill.toStringTag, { + value: 'ReadableStream', + configurable: true + }); +} +Object.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, { + value: ReadableStream.prototype.values, + writable: true, + configurable: true +}); +// Abstract operations for the ReadableStream. +// Throws if and only if startAlgorithm throws. +function CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm) { + if (highWaterMark === void 0) { highWaterMark = 1; } + if (sizeAlgorithm === void 0) { sizeAlgorithm = function () { return 1; }; } + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableStreamDefaultController.prototype); + SetUpReadableStreamDefaultController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm); + return stream; +} +// Throws if and only if startAlgorithm throws. +function CreateReadableByteStream(startAlgorithm, pullAlgorithm, cancelAlgorithm) { + var stream = Object.create(ReadableStream.prototype); + InitializeReadableStream(stream); + var controller = Object.create(ReadableByteStreamController.prototype); + SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined); + return stream; +} +function InitializeReadableStream(stream) { + stream._state = 'readable'; + stream._reader = undefined; + stream._storedError = undefined; + stream._disturbed = false; +} +function IsReadableStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) { + return false; + } + return x instanceof ReadableStream; +} +function IsReadableStreamLocked(stream) { + if (stream._reader === undefined) { + return false; + } + return true; +} +// ReadableStream API exposed for controllers. +function ReadableStreamCancel(stream, reason) { + stream._disturbed = true; + if (stream._state === 'closed') { + return promiseResolvedWith(undefined); + } + if (stream._state === 'errored') { + return promiseRejectedWith(stream._storedError); + } + ReadableStreamClose(stream); + var reader = stream._reader; + if (reader !== undefined && IsReadableStreamBYOBReader(reader)) { + var readIntoRequests = reader._readIntoRequests; + reader._readIntoRequests = new SimpleQueue(); + readIntoRequests.forEach(function (readIntoRequest) { + readIntoRequest._closeSteps(undefined); + }); + } + var sourceCancelPromise = stream._readableStreamController[CancelSteps](reason); + return transformPromiseWith(sourceCancelPromise, noop); +} +function ReadableStreamClose(stream) { + stream._state = 'closed'; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseResolve(reader); + if (IsReadableStreamDefaultReader(reader)) { + var readRequests = reader._readRequests; + reader._readRequests = new SimpleQueue(); + readRequests.forEach(function (readRequest) { + readRequest._closeSteps(); + }); + } +} +function ReadableStreamError(stream, e) { + stream._state = 'errored'; + stream._storedError = e; + var reader = stream._reader; + if (reader === undefined) { + return; + } + defaultReaderClosedPromiseReject(reader, e); + if (IsReadableStreamDefaultReader(reader)) { + ReadableStreamDefaultReaderErrorReadRequests(reader, e); + } + else { + ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e); + } +} +// Helper functions for the ReadableStream. +function streamBrandCheckException$1(name) { + return new TypeError("ReadableStream.prototype.".concat(name, " can only be used on a ReadableStream")); +} + +function convertQueuingStrategyInit(init, context) { + assertDictionary(init, context); + var highWaterMark = init === null || init === void 0 ? void 0 : init.highWaterMark; + assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit'); + return { + highWaterMark: convertUnrestrictedDouble(highWaterMark) + }; +} + +// The size function must not have a prototype property nor be a constructor +var byteLengthSizeFunction = function (chunk) { + return chunk.byteLength; +}; +setFunctionName(byteLengthSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +var ByteLengthQueuingStrategy = /** @class */ (function () { + function ByteLengthQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('highWaterMark'); + } + return this._byteLengthQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(ByteLengthQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get: function () { + if (!IsByteLengthQueuingStrategy(this)) { + throw byteLengthBrandCheckException('size'); + } + return byteLengthSizeFunction; + }, + enumerable: false, + configurable: true + }); + return ByteLengthQueuingStrategy; +}()); +Object.defineProperties(ByteLengthQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(ByteLengthQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'ByteLengthQueuingStrategy', + configurable: true + }); +} +// Helper functions for the ByteLengthQueuingStrategy. +function byteLengthBrandCheckException(name) { + return new TypeError("ByteLengthQueuingStrategy.prototype.".concat(name, " can only be used on a ByteLengthQueuingStrategy")); +} +function IsByteLengthQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof ByteLengthQueuingStrategy; +} + +// The size function must not have a prototype property nor be a constructor +var countSizeFunction = function () { + return 1; +}; +setFunctionName(countSizeFunction, 'size'); +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +var CountQueuingStrategy = /** @class */ (function () { + function CountQueuingStrategy(options) { + assertRequiredArgument(options, 1, 'CountQueuingStrategy'); + options = convertQueuingStrategyInit(options, 'First parameter'); + this._countQueuingStrategyHighWaterMark = options.highWaterMark; + } + Object.defineProperty(CountQueuingStrategy.prototype, "highWaterMark", { + /** + * Returns the high water mark provided to the constructor. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('highWaterMark'); + } + return this._countQueuingStrategyHighWaterMark; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(CountQueuingStrategy.prototype, "size", { + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get: function () { + if (!IsCountQueuingStrategy(this)) { + throw countBrandCheckException('size'); + } + return countSizeFunction; + }, + enumerable: false, + configurable: true + }); + return CountQueuingStrategy; +}()); +Object.defineProperties(CountQueuingStrategy.prototype, { + highWaterMark: { enumerable: true }, + size: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(CountQueuingStrategy.prototype, SymbolPolyfill.toStringTag, { + value: 'CountQueuingStrategy', + configurable: true + }); +} +// Helper functions for the CountQueuingStrategy. +function countBrandCheckException(name) { + return new TypeError("CountQueuingStrategy.prototype.".concat(name, " can only be used on a CountQueuingStrategy")); +} +function IsCountQueuingStrategy(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) { + return false; + } + return x instanceof CountQueuingStrategy; +} + +function convertTransformer(original, context) { + assertDictionary(original, context); + var cancel = original === null || original === void 0 ? void 0 : original.cancel; + var flush = original === null || original === void 0 ? void 0 : original.flush; + var readableType = original === null || original === void 0 ? void 0 : original.readableType; + var start = original === null || original === void 0 ? void 0 : original.start; + var transform = original === null || original === void 0 ? void 0 : original.transform; + var writableType = original === null || original === void 0 ? void 0 : original.writableType; + return { + cancel: cancel === undefined ? + undefined : + convertTransformerCancelCallback(cancel, original, "".concat(context, " has member 'cancel' that")), + flush: flush === undefined ? + undefined : + convertTransformerFlushCallback(flush, original, "".concat(context, " has member 'flush' that")), + readableType: readableType, + start: start === undefined ? + undefined : + convertTransformerStartCallback(start, original, "".concat(context, " has member 'start' that")), + transform: transform === undefined ? + undefined : + convertTransformerTransformCallback(transform, original, "".concat(context, " has member 'transform' that")), + writableType: writableType + }; +} +function convertTransformerFlushCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return promiseCall(fn, original, [controller]); }; +} +function convertTransformerStartCallback(fn, original, context) { + assertFunction(fn, context); + return function (controller) { return reflectCall(fn, original, [controller]); }; +} +function convertTransformerTransformCallback(fn, original, context) { + assertFunction(fn, context); + return function (chunk, controller) { return promiseCall(fn, original, [chunk, controller]); }; +} +function convertTransformerCancelCallback(fn, original, context) { + assertFunction(fn, context); + return function (reason) { return promiseCall(fn, original, [reason]); }; +} + +// Class TransformStream +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +var TransformStream = /** @class */ (function () { + function TransformStream(rawTransformer, rawWritableStrategy, rawReadableStrategy) { + if (rawTransformer === void 0) { rawTransformer = {}; } + if (rawWritableStrategy === void 0) { rawWritableStrategy = {}; } + if (rawReadableStrategy === void 0) { rawReadableStrategy = {}; } + if (rawTransformer === undefined) { + rawTransformer = null; + } + var writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter'); + var readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter'); + var transformer = convertTransformer(rawTransformer, 'First parameter'); + if (transformer.readableType !== undefined) { + throw new RangeError('Invalid readableType specified'); + } + if (transformer.writableType !== undefined) { + throw new RangeError('Invalid writableType specified'); + } + var readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0); + var readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy); + var writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1); + var writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy); + var startPromise_resolve; + var startPromise = newPromise(function (resolve) { + startPromise_resolve = resolve; + }); + InitializeTransformStream(this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + SetUpTransformStreamDefaultControllerFromTransformer(this, transformer); + if (transformer.start !== undefined) { + startPromise_resolve(transformer.start(this._transformStreamController)); + } + else { + startPromise_resolve(undefined); + } + } + Object.defineProperty(TransformStream.prototype, "readable", { + /** + * The readable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('readable'); + } + return this._readable; + }, + enumerable: false, + configurable: true + }); + Object.defineProperty(TransformStream.prototype, "writable", { + /** + * The writable side of the transform stream. + */ + get: function () { + if (!IsTransformStream(this)) { + throw streamBrandCheckException('writable'); + } + return this._writable; + }, + enumerable: false, + configurable: true + }); + return TransformStream; +}()); +Object.defineProperties(TransformStream.prototype, { + readable: { enumerable: true }, + writable: { enumerable: true } +}); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStream.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStream', + configurable: true + }); +} +function InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm) { + function startAlgorithm() { + return startPromise; + } + function writeAlgorithm(chunk) { + return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk); + } + function abortAlgorithm(reason) { + return TransformStreamDefaultSinkAbortAlgorithm(stream, reason); + } + function closeAlgorithm() { + return TransformStreamDefaultSinkCloseAlgorithm(stream); + } + stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, writableHighWaterMark, writableSizeAlgorithm); + function pullAlgorithm() { + return TransformStreamDefaultSourcePullAlgorithm(stream); + } + function cancelAlgorithm(reason) { + return TransformStreamDefaultSourceCancelAlgorithm(stream, reason); + } + stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark, readableSizeAlgorithm); + // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure. + stream._backpressure = undefined; + stream._backpressureChangePromise = undefined; + stream._backpressureChangePromise_resolve = undefined; + TransformStreamSetBackpressure(stream, true); + stream._transformStreamController = undefined; +} +function IsTransformStream(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) { + return false; + } + return x instanceof TransformStream; +} +// This is a no-op if both sides are already errored. +function TransformStreamError(stream, e) { + ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e); + TransformStreamErrorWritableAndUnblockWrite(stream, e); +} +function TransformStreamErrorWritableAndUnblockWrite(stream, e) { + TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController); + WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e); + TransformStreamUnblockWrite(stream); +} +function TransformStreamUnblockWrite(stream) { + if (stream._backpressure) { + // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure() + // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time + // _backpressure is set. + TransformStreamSetBackpressure(stream, false); + } +} +function TransformStreamSetBackpressure(stream, backpressure) { + // Passes also when called during construction. + if (stream._backpressureChangePromise !== undefined) { + stream._backpressureChangePromise_resolve(); + } + stream._backpressureChangePromise = newPromise(function (resolve) { + stream._backpressureChangePromise_resolve = resolve; + }); + stream._backpressure = backpressure; +} +// Class TransformStreamDefaultController +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +var TransformStreamDefaultController = /** @class */ (function () { + function TransformStreamDefaultController() { + throw new TypeError('Illegal constructor'); + } + Object.defineProperty(TransformStreamDefaultController.prototype, "desiredSize", { + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get: function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('desiredSize'); + } + var readableController = this._controlledTransformStream._readable._readableStreamController; + return ReadableStreamDefaultControllerGetDesiredSize(readableController); + }, + enumerable: false, + configurable: true + }); + TransformStreamDefaultController.prototype.enqueue = function (chunk) { + if (chunk === void 0) { chunk = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('enqueue'); + } + TransformStreamDefaultControllerEnqueue(this, chunk); + }; + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + TransformStreamDefaultController.prototype.error = function (reason) { + if (reason === void 0) { reason = undefined; } + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('error'); + } + TransformStreamDefaultControllerError(this, reason); + }; + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + TransformStreamDefaultController.prototype.terminate = function () { + if (!IsTransformStreamDefaultController(this)) { + throw defaultControllerBrandCheckException('terminate'); + } + TransformStreamDefaultControllerTerminate(this); + }; + return TransformStreamDefaultController; +}()); +Object.defineProperties(TransformStreamDefaultController.prototype, { + enqueue: { enumerable: true }, + error: { enumerable: true }, + terminate: { enumerable: true }, + desiredSize: { enumerable: true } +}); +setFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue'); +setFunctionName(TransformStreamDefaultController.prototype.error, 'error'); +setFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate'); +if (typeof SymbolPolyfill.toStringTag === 'symbol') { + Object.defineProperty(TransformStreamDefaultController.prototype, SymbolPolyfill.toStringTag, { + value: 'TransformStreamDefaultController', + configurable: true + }); +} +// Transform Stream Default Controller Abstract Operations +function IsTransformStreamDefaultController(x) { + if (!typeIsObject(x)) { + return false; + } + if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) { + return false; + } + return x instanceof TransformStreamDefaultController; +} +function SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm) { + controller._controlledTransformStream = stream; + stream._transformStreamController = controller; + controller._transformAlgorithm = transformAlgorithm; + controller._flushAlgorithm = flushAlgorithm; + controller._cancelAlgorithm = cancelAlgorithm; + controller._finishPromise = undefined; + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function SetUpTransformStreamDefaultControllerFromTransformer(stream, transformer) { + var controller = Object.create(TransformStreamDefaultController.prototype); + var transformAlgorithm; + var flushAlgorithm; + var cancelAlgorithm; + if (transformer.transform !== undefined) { + transformAlgorithm = function (chunk) { return transformer.transform(chunk, controller); }; + } + else { + transformAlgorithm = function (chunk) { + try { + TransformStreamDefaultControllerEnqueue(controller, chunk); + return promiseResolvedWith(undefined); + } + catch (transformResultE) { + return promiseRejectedWith(transformResultE); + } + }; + } + if (transformer.flush !== undefined) { + flushAlgorithm = function () { return transformer.flush(controller); }; + } + else { + flushAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + if (transformer.cancel !== undefined) { + cancelAlgorithm = function (reason) { return transformer.cancel(reason); }; + } + else { + cancelAlgorithm = function () { return promiseResolvedWith(undefined); }; + } + SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm); +} +function TransformStreamDefaultControllerClearAlgorithms(controller) { + controller._transformAlgorithm = undefined; + controller._flushAlgorithm = undefined; + controller._cancelAlgorithm = undefined; +} +function TransformStreamDefaultControllerEnqueue(controller, chunk) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) { + throw new TypeError('Readable side is not in a state that permits enqueue'); + } + // We throttle transform invocations based on the backpressure of the ReadableStream, but we still + // accept TransformStreamDefaultControllerEnqueue() calls. + try { + ReadableStreamDefaultControllerEnqueue(readableController, chunk); + } + catch (e) { + // This happens when readableStrategy.size() throws. + TransformStreamErrorWritableAndUnblockWrite(stream, e); + throw stream._readable._storedError; + } + var backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController); + if (backpressure !== stream._backpressure) { + TransformStreamSetBackpressure(stream, true); + } +} +function TransformStreamDefaultControllerError(controller, e) { + TransformStreamError(controller._controlledTransformStream, e); +} +function TransformStreamDefaultControllerPerformTransform(controller, chunk) { + var transformPromise = controller._transformAlgorithm(chunk); + return transformPromiseWith(transformPromise, undefined, function (r) { + TransformStreamError(controller._controlledTransformStream, r); + throw r; + }); +} +function TransformStreamDefaultControllerTerminate(controller) { + var stream = controller._controlledTransformStream; + var readableController = stream._readable._readableStreamController; + ReadableStreamDefaultControllerClose(readableController); + var error = new TypeError('TransformStream terminated'); + TransformStreamErrorWritableAndUnblockWrite(stream, error); +} +// TransformStreamDefaultSink Algorithms +function TransformStreamDefaultSinkWriteAlgorithm(stream, chunk) { + var controller = stream._transformStreamController; + if (stream._backpressure) { + var backpressureChangePromise = stream._backpressureChangePromise; + return transformPromiseWith(backpressureChangePromise, function () { + var writable = stream._writable; + var state = writable._state; + if (state === 'erroring') { + throw writable._storedError; + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); + }); + } + return TransformStreamDefaultControllerPerformTransform(controller, chunk); +} +function TransformStreamDefaultSinkAbortAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally, + // we don't run the _cancelAlgorithm again. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerError(readable._readableStreamController, reason); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +function TransformStreamDefaultSinkCloseAlgorithm(stream) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._readable cannot change after construction, so caching it across a call to user code is safe. + var readable = stream._readable; + // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally, + // we don't also run the _cancelAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var flushPromise = controller._flushAlgorithm(); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(flushPromise, function () { + if (readable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, readable._storedError); + } + else { + ReadableStreamDefaultControllerClose(readable._readableStreamController); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + ReadableStreamDefaultControllerError(readable._readableStreamController, r); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// TransformStreamDefaultSource Algorithms +function TransformStreamDefaultSourcePullAlgorithm(stream) { + // Invariant. Enforced by the promises returned by start() and pull(). + TransformStreamSetBackpressure(stream, false); + // Prevent the next pull() call until there is backpressure. + return stream._backpressureChangePromise; +} +function TransformStreamDefaultSourceCancelAlgorithm(stream, reason) { + var controller = stream._transformStreamController; + if (controller._finishPromise !== undefined) { + return controller._finishPromise; + } + // stream._writable cannot change after construction, so caching it across a call to user code is safe. + var writable = stream._writable; + // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or + // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the + // _flushAlgorithm. + controller._finishPromise = newPromise(function (resolve, reject) { + controller._finishPromise_resolve = resolve; + controller._finishPromise_reject = reject; + }); + var cancelPromise = controller._cancelAlgorithm(reason); + TransformStreamDefaultControllerClearAlgorithms(controller); + uponPromise(cancelPromise, function () { + if (writable._state === 'errored') { + defaultControllerFinishPromiseReject(controller, writable._storedError); + } + else { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseResolve(controller); + } + return null; + }, function (r) { + WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r); + TransformStreamUnblockWrite(stream); + defaultControllerFinishPromiseReject(controller, r); + return null; + }); + return controller._finishPromise; +} +// Helper functions for the TransformStreamDefaultController. +function defaultControllerBrandCheckException(name) { + return new TypeError("TransformStreamDefaultController.prototype.".concat(name, " can only be used on a TransformStreamDefaultController")); +} +function defaultControllerFinishPromiseResolve(controller) { + if (controller._finishPromise_resolve === undefined) { + return; + } + controller._finishPromise_resolve(); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +function defaultControllerFinishPromiseReject(controller, reason) { + if (controller._finishPromise_reject === undefined) { + return; + } + setPromiseIsHandledToTrue(controller._finishPromise); + controller._finishPromise_reject(reason); + controller._finishPromise_resolve = undefined; + controller._finishPromise_reject = undefined; +} +// Helper functions for the TransformStream. +function streamBrandCheckException(name) { + return new TypeError("TransformStream.prototype.".concat(name, " can only be used on a TransformStream")); +} + +export { ByteLengthQueuingStrategy, CountQueuingStrategy, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, TransformStream, TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter }; +//# sourceMappingURL=ponyfill.mjs.map diff --git a/node_modules/web-streams-polyfill/dist/ponyfill.mjs.map b/node_modules/web-streams-polyfill/dist/ponyfill.mjs.map new file mode 100644 index 0000000..d7df2bd --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/ponyfill.mjs.map @@ -0,0 +1 @@ +{"version":3,"file":"ponyfill.mjs","sources":["../src/stub/symbol.ts","../node_modules/tslib/tslib.es6.js","../src/utils.ts","../src/lib/helpers/miscellaneous.ts","../src/lib/helpers/webidl.ts","../src/lib/simple-queue.ts","../src/lib/abstract-ops/internal-methods.ts","../src/lib/readable-stream/generic-reader.ts","../src/stub/number-isfinite.ts","../src/stub/math-trunc.ts","../src/lib/validators/basic.ts","../src/lib/validators/readable-stream.ts","../src/lib/readable-stream/default-reader.ts","../src/lib/abstract-ops/ecmascript.ts","../src/target/es5/stub/async-iterator-prototype.ts","../src/lib/readable-stream/async-iterator.ts","../src/stub/number-isnan.ts","../src/lib/abstract-ops/miscellaneous.ts","../src/lib/abstract-ops/queue-with-sizes.ts","../src/lib/helpers/array-buffer-view.ts","../src/lib/readable-stream/byte-stream-controller.ts","../src/lib/validators/reader-options.ts","../src/lib/readable-stream/byob-reader.ts","../src/lib/abstract-ops/queuing-strategy.ts","../src/lib/validators/queuing-strategy.ts","../src/lib/validators/underlying-sink.ts","../src/lib/validators/writable-stream.ts","../src/lib/abort-signal.ts","../src/lib/writable-stream.ts","../src/globals.ts","../src/stub/dom-exception.ts","../src/lib/readable-stream/pipe.ts","../src/lib/readable-stream/default-controller.ts","../src/lib/readable-stream/tee.ts","../src/lib/readable-stream/readable-stream-like.ts","../src/lib/readable-stream/from.ts","../src/lib/validators/underlying-source.ts","../src/lib/validators/iterator-options.ts","../src/lib/validators/pipe-options.ts","../src/lib/validators/readable-writable-pair.ts","../src/lib/readable-stream.ts","../src/lib/validators/queuing-strategy-init.ts","../src/lib/byte-length-queuing-strategy.ts","../src/lib/count-queuing-strategy.ts","../src/lib/validators/transformer.ts","../src/lib/transform-stream.ts"],"sourcesContent":["/// \n\nconst SymbolPolyfill: (description?: string) => symbol =\n typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ?\n Symbol :\n description => `Symbol(${description})` as any as symbol;\n\nexport default SymbolPolyfill;\n","/******************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise, SuppressedError, Symbol */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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(this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n\r\nexport function __classPrivateFieldIn(state, receiver) {\r\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\r\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\r\n}\r\n\r\nexport function __addDisposableResource(env, value, async) {\r\n if (value !== null && value !== void 0) {\r\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\r\n var dispose;\r\n if (async) {\r\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\r\n dispose = value[Symbol.asyncDispose];\r\n }\r\n if (dispose === void 0) {\r\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\r\n dispose = value[Symbol.dispose];\r\n }\r\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\r\n env.stack.push({ value: value, dispose: dispose, async: async });\r\n }\r\n else if (async) {\r\n env.stack.push({ async: true });\r\n }\r\n return value;\r\n}\r\n\r\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\r\n var e = new Error(message);\r\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\r\n};\r\n\r\nexport function __disposeResources(env) {\r\n function fail(e) {\r\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\r\n env.hasError = true;\r\n }\r\n function next() {\r\n while (env.stack.length) {\r\n var rec = env.stack.pop();\r\n try {\r\n var result = rec.dispose && rec.dispose.call(rec.value);\r\n if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\r\n }\r\n catch (e) {\r\n fail(e);\r\n }\r\n }\r\n if (env.hasError) throw env.error;\r\n }\r\n return next();\r\n}\r\n\r\nexport default {\r\n __extends: __extends,\r\n __assign: __assign,\r\n __rest: __rest,\r\n __decorate: __decorate,\r\n __param: __param,\r\n __metadata: __metadata,\r\n __awaiter: __awaiter,\r\n __generator: __generator,\r\n __createBinding: __createBinding,\r\n __exportStar: __exportStar,\r\n __values: __values,\r\n __read: __read,\r\n __spread: __spread,\r\n __spreadArrays: __spreadArrays,\r\n __spreadArray: __spreadArray,\r\n __await: __await,\r\n __asyncGenerator: __asyncGenerator,\r\n __asyncDelegator: __asyncDelegator,\r\n __asyncValues: __asyncValues,\r\n __makeTemplateObject: __makeTemplateObject,\r\n __importStar: __importStar,\r\n __importDefault: __importDefault,\r\n __classPrivateFieldGet: __classPrivateFieldGet,\r\n __classPrivateFieldSet: __classPrivateFieldSet,\r\n __classPrivateFieldIn: __classPrivateFieldIn,\r\n __addDisposableResource: __addDisposableResource,\r\n __disposeResources: __disposeResources,\r\n};\r\n","export function noop(): undefined {\n return undefined;\n}\n","import { noop } from '../../utils';\nimport { AssertionError } from '../../stub/assert';\n\nexport function typeIsObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport const rethrowAssertionErrorRejection: (e: any) => void =\n DEBUG ? e => {\n // Used throughout the reference implementation, as `.catch(rethrowAssertionErrorRejection)`, to ensure any errors\n // get shown. There are places in the spec where we do promise transformations and purposefully ignore or don't\n // expect any errors, but assertion errors are always problematic.\n if (e && e instanceof AssertionError) {\n setTimeout(() => {\n throw e;\n }, 0);\n }\n } : noop;\n\nexport function setFunctionName(fn: Function, name: string): void {\n try {\n Object.defineProperty(fn, 'name', {\n value: name,\n configurable: true\n });\n } catch {\n // This property is non-configurable in older browsers, so ignore if this throws.\n // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name#browser_compatibility\n }\n}\n","import { rethrowAssertionErrorRejection } from './miscellaneous';\nimport assert from '../../stub/assert';\n\nconst originalPromise = Promise;\nconst originalPromiseThen = Promise.prototype.then;\nconst originalPromiseReject = Promise.reject.bind(originalPromise);\n\n// https://webidl.spec.whatwg.org/#a-new-promise\nexport function newPromise(executor: (\n resolve: (value: T | PromiseLike) => void,\n reject: (reason?: any) => void\n) => void): Promise {\n return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith(value: T | PromiseLike): Promise {\n return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith(reason: any): Promise {\n return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen(\n promise: Promise,\n onFulfilled?: (value: T) => TResult1 | PromiseLike,\n onRejected?: (reason: any) => TResult2 | PromiseLike): Promise {\n // There doesn't appear to be any way to correctly emulate the behaviour from JavaScript, so this is just an\n // approximation.\n return originalPromiseThen.call(promise, onFulfilled, onRejected) as Promise;\n}\n\n// Bluebird logs a warning when a promise is created within a fulfillment handler, but then isn't returned\n// from that handler. To prevent this, return null instead of void from all handlers.\n// http://bluebirdjs.com/docs/warning-explanations.html#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it\nexport function uponPromise(\n promise: Promise,\n onFulfilled?: (value: T) => null | PromiseLike,\n onRejected?: (reason: any) => null | PromiseLike): void {\n PerformPromiseThen(\n PerformPromiseThen(promise, onFulfilled, onRejected),\n undefined,\n rethrowAssertionErrorRejection\n );\n}\n\nexport function uponFulfillment(promise: Promise, onFulfilled: (value: T) => null | PromiseLike): void {\n uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise, onRejected: (reason: any) => null | PromiseLike): void {\n uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith(\n promise: Promise,\n fulfillmentHandler?: (value: T) => TResult1 | PromiseLike,\n rejectionHandler?: (reason: any) => TResult2 | PromiseLike): Promise {\n return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise): void {\n PerformPromiseThen(promise, undefined, rethrowAssertionErrorRejection);\n}\n\nlet _queueMicrotask: (callback: () => void) => void = callback => {\n if (typeof queueMicrotask === 'function') {\n _queueMicrotask = queueMicrotask;\n } else {\n const resolvedPromise = promiseResolvedWith(undefined);\n _queueMicrotask = cb => PerformPromiseThen(resolvedPromise, cb);\n }\n return _queueMicrotask(callback);\n};\n\nexport { _queueMicrotask as queueMicrotask };\n\nexport function reflectCall(F: (this: T, ...fnArgs: A) => R, V: T, args: A): R {\n if (typeof F !== 'function') {\n throw new TypeError('Argument is not a function');\n }\n return Function.prototype.apply.call(F, V, args);\n}\n\nexport function promiseCall(F: (this: T, ...fnArgs: A) => R | PromiseLike,\n V: T,\n args: A): Promise {\n assert(typeof F === 'function');\n assert(V !== undefined);\n assert(Array.isArray(args));\n try {\n return promiseResolvedWith(reflectCall(F, V, args));\n } catch (value) {\n return promiseRejectedWith(value);\n }\n}\n","import assert from '../stub/assert';\n\n// Original from Chromium\n// https://chromium.googlesource.com/chromium/src/+/0aee4434a4dba42a42abaea9bfbc0cd196a63bc1/third_party/blink/renderer/core/streams/SimpleQueue.js\n\nconst QUEUE_MAX_ARRAY_SIZE = 16384;\n\ninterface Node {\n _elements: T[];\n _next: Node | undefined;\n}\n\n/**\n * Simple queue structure.\n *\n * Avoids scalability issues with using a packed array directly by using\n * multiple arrays in a linked list and keeping the array size bounded.\n */\nexport class SimpleQueue {\n private _front: Node;\n private _back: Node;\n private _cursor = 0;\n private _size = 0;\n\n constructor() {\n // _front and _back are always defined.\n this._front = {\n _elements: [],\n _next: undefined\n };\n this._back = this._front;\n // The cursor is used to avoid calling Array.shift().\n // It contains the index of the front element of the array inside the\n // front-most node. It is always in the range [0, QUEUE_MAX_ARRAY_SIZE).\n this._cursor = 0;\n // When there is only one node, size === elements.length - cursor.\n this._size = 0;\n }\n\n get length(): number {\n return this._size;\n }\n\n // For exception safety, this method is structured in order:\n // 1. Read state\n // 2. Calculate required state mutations\n // 3. Perform state mutations\n push(element: T): void {\n const oldBack = this._back;\n let newBack = oldBack;\n assert(oldBack._next === undefined);\n if (oldBack._elements.length === QUEUE_MAX_ARRAY_SIZE - 1) {\n newBack = {\n _elements: [],\n _next: undefined\n };\n }\n\n // push() is the mutation most likely to throw an exception, so it\n // goes first.\n oldBack._elements.push(element);\n if (newBack !== oldBack) {\n this._back = newBack;\n oldBack._next = newBack;\n }\n ++this._size;\n }\n\n // Like push(), shift() follows the read -> calculate -> mutate pattern for\n // exception safety.\n shift(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const oldFront = this._front;\n let newFront = oldFront;\n const oldCursor = this._cursor;\n let newCursor = oldCursor + 1;\n\n const elements = oldFront._elements;\n const element = elements[oldCursor];\n\n if (newCursor === QUEUE_MAX_ARRAY_SIZE) {\n assert(elements.length === QUEUE_MAX_ARRAY_SIZE);\n assert(oldFront._next !== undefined);\n newFront = oldFront._next!;\n newCursor = 0;\n }\n\n // No mutations before this point.\n --this._size;\n this._cursor = newCursor;\n if (oldFront !== newFront) {\n this._front = newFront;\n }\n\n // Permit shifted element to be garbage collected.\n elements[oldCursor] = undefined!;\n\n return element;\n }\n\n // The tricky thing about forEach() is that it can be called\n // re-entrantly. The queue may be mutated inside the callback. It is easy to\n // see that push() within the callback has no negative effects since the end\n // of the queue is checked for on every iteration. If shift() is called\n // repeatedly within the callback then the next iteration may return an\n // element that has been removed. In this case the callback will be called\n // with undefined values until we either \"catch up\" with elements that still\n // exist or reach the back of the queue.\n forEach(callback: (element: T) => void): void {\n let i = this._cursor;\n let node = this._front;\n let elements = node._elements;\n while (i !== elements.length || node._next !== undefined) {\n if (i === elements.length) {\n assert(node._next !== undefined);\n assert(i === QUEUE_MAX_ARRAY_SIZE);\n node = node._next!;\n elements = node._elements;\n i = 0;\n if (elements.length === 0) {\n break;\n }\n }\n callback(elements[i]);\n ++i;\n }\n }\n\n // Return the element that would be returned if shift() was called now,\n // without modifying the queue.\n peek(): T {\n assert(this._size > 0); // must not be called on an empty queue\n\n const front = this._front;\n const cursor = this._cursor;\n return front._elements[cursor];\n }\n}\n","export const AbortSteps = Symbol('[[AbortSteps]]');\nexport const ErrorSteps = Symbol('[[ErrorSteps]]');\nexport const CancelSteps = Symbol('[[CancelSteps]]');\nexport const PullSteps = Symbol('[[PullSteps]]');\nexport const ReleaseSteps = Symbol('[[ReleaseSteps]]');\n","import assert from '../../stub/assert';\nimport { ReadableStream, ReadableStreamCancel, type ReadableStreamReader } from '../readable-stream';\nimport { newPromise, setPromiseIsHandledToTrue } from '../helpers/webidl';\nimport { ReleaseSteps } from '../abstract-ops/internal-methods';\n\nexport function ReadableStreamReaderGenericInitialize(reader: ReadableStreamReader, stream: ReadableStream) {\n reader._ownerReadableStream = stream;\n stream._reader = reader;\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseInitialize(reader);\n } else if (stream._state === 'closed') {\n defaultReaderClosedPromiseInitializeAsResolved(reader);\n } else {\n assert(stream._state === 'errored');\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);\n }\n}\n\n// A client of ReadableStreamDefaultReader and ReadableStreamBYOBReader may use these functions directly to bypass state\n// check.\n\nexport function ReadableStreamReaderGenericCancel(reader: ReadableStreamReader, reason: any): Promise {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader) {\n const stream = reader._ownerReadableStream;\n assert(stream !== undefined);\n assert(stream._reader === reader);\n\n if (stream._state === 'readable') {\n defaultReaderClosedPromiseReject(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n } else {\n defaultReaderClosedPromiseResetToRejected(\n reader,\n new TypeError(`Reader was released and can no longer be used to monitor the stream's closedness`));\n }\n\n stream._readableStreamController[ReleaseSteps]();\n\n stream._reader = undefined;\n reader._ownerReadableStream = undefined!;\n}\n\n// Helper functions for the readers.\n\nexport function readerLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released reader');\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nexport function defaultReaderClosedPromiseInitialize(reader: ReadableStreamReader) {\n reader._closedPromise = newPromise((resolve, reject) => {\n reader._closedPromise_resolve = resolve;\n reader._closedPromise_reject = reject;\n });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader, reason: any) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader) {\n defaultReaderClosedPromiseInitialize(reader);\n defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader, reason: any) {\n if (reader._closedPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(reader._closedPromise);\n reader._closedPromise_reject(reason);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n\nexport function defaultReaderClosedPromiseResetToRejected(reader: ReadableStreamReader, reason: any) {\n assert(reader._closedPromise_resolve === undefined);\n assert(reader._closedPromise_reject === undefined);\n\n defaultReaderClosedPromiseInitializeAsRejected(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseResolve(reader: ReadableStreamReader) {\n if (reader._closedPromise_resolve === undefined) {\n return;\n }\n\n reader._closedPromise_resolve(undefined);\n reader._closedPromise_resolve = undefined;\n reader._closedPromise_reject = undefined;\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite#Polyfill\nconst NumberIsFinite: typeof Number.isFinite = Number.isFinite || function (x) {\n return typeof x === 'number' && isFinite(x);\n};\n\nexport default NumberIsFinite;\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Polyfill\nconst MathTrunc: typeof Math.trunc = Math.trunc || function (v) {\n return v < 0 ? Math.ceil(v) : Math.floor(v);\n};\n\nexport default MathTrunc;\n","import NumberIsFinite from '../../stub/number-isfinite';\nimport MathTrunc from '../../stub/math-trunc';\n\n// https://heycam.github.io/webidl/#idl-dictionaries\nexport function isDictionary(x: any): x is object | null {\n return typeof x === 'object' || typeof x === 'function';\n}\n\nexport function assertDictionary(obj: unknown,\n context: string): asserts obj is object | null | undefined {\n if (obj !== undefined && !isDictionary(obj)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport type AnyFunction = (...args: any[]) => any;\n\n// https://heycam.github.io/webidl/#idl-callback-functions\nexport function assertFunction(x: unknown, context: string): asserts x is AnyFunction {\n if (typeof x !== 'function') {\n throw new TypeError(`${context} is not a function.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-object\nexport function isObject(x: any): x is object {\n return (typeof x === 'object' && x !== null) || typeof x === 'function';\n}\n\nexport function assertObject(x: unknown,\n context: string): asserts x is object {\n if (!isObject(x)) {\n throw new TypeError(`${context} is not an object.`);\n }\n}\n\nexport function assertRequiredArgument(x: T | undefined,\n position: number,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`Parameter ${position} is required in '${context}'.`);\n }\n}\n\nexport function assertRequiredField(x: T | undefined,\n field: string,\n context: string): asserts x is T {\n if (x === undefined) {\n throw new TypeError(`${field} is required in '${context}'.`);\n }\n}\n\n// https://heycam.github.io/webidl/#idl-unrestricted-double\nexport function convertUnrestrictedDouble(value: unknown): number {\n return Number(value);\n}\n\nfunction censorNegativeZero(x: number): number {\n return x === 0 ? 0 : x;\n}\n\nfunction integerPart(x: number): number {\n return censorNegativeZero(MathTrunc(x));\n}\n\n// https://heycam.github.io/webidl/#idl-unsigned-long-long\nexport function convertUnsignedLongLongWithEnforceRange(value: unknown, context: string): number {\n const lowerBound = 0;\n const upperBound = Number.MAX_SAFE_INTEGER;\n\n let x = Number(value);\n x = censorNegativeZero(x);\n\n if (!NumberIsFinite(x)) {\n throw new TypeError(`${context} is not a finite number`);\n }\n\n x = integerPart(x);\n\n if (x < lowerBound || x > upperBound) {\n throw new TypeError(`${context} is outside the accepted range of ${lowerBound} to ${upperBound}, inclusive`);\n }\n\n if (!NumberIsFinite(x) || x === 0) {\n return 0;\n }\n\n // TODO Use BigInt if supported?\n // let xBigInt = BigInt(integerPart(x));\n // xBigInt = BigInt.asUintN(64, xBigInt);\n // return Number(xBigInt);\n\n return x;\n}\n","import { IsReadableStream, ReadableStream } from '../readable-stream';\n\nexport function assertReadableStream(x: unknown, context: string): asserts x is ReadableStream {\n if (!IsReadableStream(x)) {\n throw new TypeError(`${context} is not a ReadableStream.`);\n }\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, ReadableStream } from '../readable-stream';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { PullSteps } from '../abstract-ops/internal-methods';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\n\n/**\n * A result returned by {@link ReadableStreamDefaultReader.read}.\n *\n * @public\n */\nexport type ReadableStreamDefaultReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value?: undefined;\n}\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamDefaultReader(stream: ReadableStream): ReadableStreamDefaultReader {\n return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest(stream: ReadableStream,\n readRequest: ReadRequest): void {\n assert(IsReadableStreamDefaultReader(stream._reader));\n assert(stream._state === 'readable');\n\n (stream._reader! as ReadableStreamDefaultReader)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest(stream: ReadableStream, chunk: R | undefined, done: boolean) {\n const reader = stream._reader as ReadableStreamDefaultReader;\n\n assert(reader._readRequests.length > 0);\n\n const readRequest = reader._readRequests.shift()!;\n if (done) {\n readRequest._closeSteps();\n } else {\n readRequest._chunkSteps(chunk!);\n }\n}\n\nexport function ReadableStreamGetNumReadRequests(stream: ReadableStream): number {\n return (stream._reader as ReadableStreamDefaultReader)._readRequests.length;\n}\n\nexport function ReadableStreamHasDefaultReader(stream: ReadableStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamDefaultReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadRequest {\n _chunkSteps(chunk: R): void;\n\n _closeSteps(): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A default reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamDefaultReader {\n /** @internal */\n _ownerReadableStream!: ReadableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamDefaultReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed,\n * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Returns a promise that allows access to the next chunk from the stream's internal queue, if available.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(): Promise> {\n if (!IsReadableStreamDefaultReader(this)) {\n return promiseRejectedWith(defaultReaderBrandCheckException('read'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: () => resolvePromise({ value: undefined, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamDefaultReaderRead(this, readRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamDefaultReader(this)) {\n throw defaultReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamDefaultReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamDefaultReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamDefaultReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamDefaultReader(x: any): x is ReadableStreamDefaultReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultReader;\n}\n\nexport function ReadableStreamDefaultReaderRead(reader: ReadableStreamDefaultReader,\n readRequest: ReadRequest): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n readRequest._closeSteps();\n } else if (stream._state === 'errored') {\n readRequest._errorSteps(stream._storedError);\n } else {\n assert(stream._state === 'readable');\n stream._readableStreamController[PullSteps](readRequest as ReadRequest);\n }\n}\n\nexport function ReadableStreamDefaultReaderRelease(reader: ReadableStreamDefaultReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n}\n\nexport function ReadableStreamDefaultReaderErrorReadRequests(reader: ReadableStreamDefaultReader, e: any) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamDefaultReader.\n\nfunction defaultReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultReader.prototype.${name} can only be used on a ReadableStreamDefaultReader`);\n}\n","import { reflectCall } from 'lib/helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport assert from '../../stub/assert';\n\ndeclare global {\n interface ArrayBuffer {\n readonly detached: boolean;\n\n transfer(): ArrayBuffer;\n }\n\n function structuredClone(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList(elements: T): T {\n // We use arrays to represent lists, so this is basically a no-op.\n // Do a slice though just in case we happen to depend on the unique-ness.\n return elements.slice() as T;\n}\n\nexport function CopyDataBlockBytes(dest: ArrayBuffer,\n destOffset: number,\n src: ArrayBuffer,\n srcOffset: number,\n n: number) {\n new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);\n}\n\nexport let TransferArrayBuffer = (O: ArrayBuffer): ArrayBuffer => {\n if (typeof O.transfer === 'function') {\n TransferArrayBuffer = buffer => buffer.transfer();\n } else if (typeof structuredClone === 'function') {\n TransferArrayBuffer = buffer => structuredClone(buffer, { transfer: [buffer] });\n } else {\n // Not implemented correctly\n TransferArrayBuffer = buffer => buffer;\n }\n return TransferArrayBuffer(O);\n};\n\nexport function CanTransferArrayBuffer(O: ArrayBuffer): boolean {\n return !IsDetachedBuffer(O);\n}\n\nexport let IsDetachedBuffer = (O: ArrayBuffer): boolean => {\n if (typeof O.detached === 'boolean') {\n IsDetachedBuffer = buffer => buffer.detached;\n } else {\n // Not implemented correctly\n IsDetachedBuffer = buffer => buffer.byteLength === 0;\n }\n return IsDetachedBuffer(O);\n};\n\nexport function ArrayBufferSlice(buffer: ArrayBuffer, begin: number, end: number): ArrayBuffer {\n // ArrayBuffer.prototype.slice is not available on IE10\n // https://www.caniuse.com/mdn-javascript_builtins_arraybuffer_slice\n if (buffer.slice) {\n return buffer.slice(begin, end);\n }\n const length = end - begin;\n const slice = new ArrayBuffer(length);\n CopyDataBlockBytes(slice, 0, buffer, begin, length);\n return slice;\n}\n\nexport type MethodName = {\n [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod>(receiver: T, prop: K): T[K] | undefined {\n const func = receiver[prop];\n if (func === undefined || func === null) {\n return undefined;\n }\n if (typeof func !== 'function') {\n throw new TypeError(`${String(prop)} is not a function`);\n }\n return func;\n}\n\nexport interface SyncIteratorRecord {\n iterator: Iterator,\n nextMethod: Iterator['next'],\n done: boolean;\n}\n\nexport interface AsyncIteratorRecord {\n iterator: AsyncIterator,\n nextMethod: AsyncIterator['next'],\n done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord = SyncIteratorRecord | AsyncIteratorRecord;\n\nexport function CreateAsyncFromSyncIterator(syncIteratorRecord: SyncIteratorRecord): AsyncIteratorRecord {\n // Instead of re-implementing CreateAsyncFromSyncIterator and %AsyncFromSyncIteratorPrototype%,\n // we use yield* inside an async generator function to achieve the same result.\n\n // Wrap the sync iterator inside a sync iterable, so we can use it with yield*.\n const syncIterable = {\n [Symbol.iterator]: () => syncIteratorRecord.iterator\n };\n // Create an async generator function and immediately invoke it.\n const asyncIterator = (async function* () {\n return yield* syncIterable;\n }());\n // Return as an async iterator record.\n const nextMethod = asyncIterator.next;\n return { iterator: asyncIterator, nextMethod, done: false };\n}\n\n// Aligns with core-js/modules/es.symbol.async-iterator.js\nexport const SymbolAsyncIterator: (typeof Symbol)['asyncIterator'] =\n Symbol.asyncIterator ??\n Symbol.for?.('Symbol.asyncIterator') ??\n '@@asyncIterator';\n\nexport type SyncOrAsyncIterable = Iterable | AsyncIterable;\nexport type SyncOrAsyncIteratorMethod = () => (Iterator | AsyncIterator);\n\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint: 'async',\n method?: SyncOrAsyncIteratorMethod\n): AsyncIteratorRecord;\nfunction GetIterator(\n obj: Iterable,\n hint: 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncIteratorRecord;\nfunction GetIterator(\n obj: SyncOrAsyncIterable,\n hint = 'sync',\n method?: SyncOrAsyncIteratorMethod\n): SyncOrAsyncIteratorRecord {\n assert(hint === 'sync' || hint === 'async');\n if (method === undefined) {\n if (hint === 'async') {\n method = GetMethod(obj as AsyncIterable, SymbolAsyncIterator);\n if (method === undefined) {\n const syncMethod = GetMethod(obj as Iterable, Symbol.iterator);\n const syncIteratorRecord = GetIterator(obj as Iterable, 'sync', syncMethod);\n return CreateAsyncFromSyncIterator(syncIteratorRecord);\n }\n } else {\n method = GetMethod(obj as Iterable, Symbol.iterator);\n }\n }\n if (method === undefined) {\n throw new TypeError('The object is not iterable');\n }\n const iterator = reflectCall(method, obj, []);\n if (!typeIsObject(iterator)) {\n throw new TypeError('The iterator method must return an object');\n }\n const nextMethod = iterator.next;\n return { iterator, nextMethod, done: false } as SyncOrAsyncIteratorRecord;\n}\n\nexport { GetIterator };\n\nexport function IteratorNext(iteratorRecord: AsyncIteratorRecord): Promise> {\n const result = reflectCall(iteratorRecord.nextMethod, iteratorRecord.iterator, []);\n if (!typeIsObject(result)) {\n throw new TypeError('The iterator.next() method must return an object');\n }\n return result;\n}\n\nexport function IteratorComplete(\n iterResult: IteratorResult\n): iterResult is IteratorReturnResult {\n assert(typeIsObject(iterResult));\n return Boolean(iterResult.done);\n}\n\nexport function IteratorValue(iterResult: IteratorYieldResult): T {\n assert(typeIsObject(iterResult));\n return iterResult.value;\n}\n","/// \n\nimport { SymbolAsyncIterator } from '../../../lib/abstract-ops/ecmascript';\n\n// We cannot access %AsyncIteratorPrototype% without non-ES2018 syntax, but we can re-create it.\nexport const AsyncIteratorPrototype: AsyncIterable = {\n // 25.1.3.1 %AsyncIteratorPrototype% [ @@asyncIterator ] ( )\n // https://tc39.github.io/ecma262/#sec-asynciteratorprototype-asynciterator\n [SymbolAsyncIterator](this: AsyncIterator) {\n return this;\n }\n};\nObject.defineProperty(AsyncIteratorPrototype, SymbolAsyncIterator, { enumerable: false });\n","/// \n\nimport { ReadableStream } from '../readable-stream';\nimport {\n AcquireReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadableStreamDefaultReadResult,\n type ReadRequest\n} from './default-reader';\nimport { ReadableStreamReaderGenericCancel, ReadableStreamReaderGenericRelease } from './generic-reader';\nimport assert from '../../stub/assert';\nimport { AsyncIteratorPrototype } from '@@target/stub/async-iterator-prototype';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n queueMicrotask,\n transformPromiseWith\n} from '../helpers/webidl';\n\n/**\n * An async iterator returned by {@link ReadableStream.values}.\n *\n * @public\n */\nexport interface ReadableStreamAsyncIterator extends AsyncIterableIterator {\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nexport class ReadableStreamAsyncIteratorImpl {\n private readonly _reader: ReadableStreamDefaultReader;\n private readonly _preventCancel: boolean;\n private _ongoingPromise: Promise> | undefined = undefined;\n private _isFinished = false;\n\n constructor(reader: ReadableStreamDefaultReader, preventCancel: boolean) {\n this._reader = reader;\n this._preventCancel = preventCancel;\n }\n\n next(): Promise> {\n const nextSteps = () => this._nextSteps();\n this._ongoingPromise = this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, nextSteps, nextSteps) :\n nextSteps();\n return this._ongoingPromise;\n }\n\n return(value: any): Promise> {\n const returnSteps = () => this._returnSteps(value);\n return this._ongoingPromise ?\n transformPromiseWith(this._ongoingPromise, returnSteps, returnSteps) :\n returnSteps();\n }\n\n private _nextSteps(): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value: undefined, done: true });\n }\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n\n let resolvePromise!: (result: ReadableStreamDefaultReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n this._ongoingPromise = undefined;\n // This needs to be delayed by one microtask, otherwise we stop pulling too early which breaks a test.\n // FIXME Is this a bug in the specification, or in the test?\n queueMicrotask(() => resolvePromise({ value: chunk, done: false }));\n },\n _closeSteps: () => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n resolvePromise({ value: undefined, done: true });\n },\n _errorSteps: reason => {\n this._ongoingPromise = undefined;\n this._isFinished = true;\n ReadableStreamReaderGenericRelease(reader);\n rejectPromise(reason);\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n return promise;\n }\n\n private _returnSteps(value: any): Promise> {\n if (this._isFinished) {\n return Promise.resolve({ value, done: true });\n }\n this._isFinished = true;\n\n const reader = this._reader;\n assert(reader._ownerReadableStream !== undefined);\n assert(reader._readRequests.length === 0);\n\n if (!this._preventCancel) {\n const result = ReadableStreamReaderGenericCancel(reader, value);\n ReadableStreamReaderGenericRelease(reader);\n return transformPromiseWith(result, () => ({ value, done: true }));\n }\n\n ReadableStreamReaderGenericRelease(reader);\n return promiseResolvedWith({ value, done: true });\n }\n}\n\ninterface ReadableStreamAsyncIteratorInstance extends ReadableStreamAsyncIterator {\n /** @interal */\n _asyncIteratorImpl: ReadableStreamAsyncIteratorImpl;\n\n next(): Promise>;\n\n return(value?: any): Promise>;\n}\n\nconst ReadableStreamAsyncIteratorPrototype: ReadableStreamAsyncIteratorInstance = {\n next(this: ReadableStreamAsyncIteratorInstance): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('next'));\n }\n return this._asyncIteratorImpl.next();\n },\n\n return(this: ReadableStreamAsyncIteratorInstance, value: any): Promise> {\n if (!IsReadableStreamAsyncIterator(this)) {\n return promiseRejectedWith(streamAsyncIteratorBrandCheckException('return'));\n }\n return this._asyncIteratorImpl.return(value);\n }\n} as any;\nObject.setPrototypeOf(ReadableStreamAsyncIteratorPrototype, AsyncIteratorPrototype);\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamAsyncIterator(stream: ReadableStream,\n preventCancel: boolean): ReadableStreamAsyncIterator {\n const reader = AcquireReadableStreamDefaultReader(stream);\n const impl = new ReadableStreamAsyncIteratorImpl(reader, preventCancel);\n const iterator: ReadableStreamAsyncIteratorInstance = Object.create(ReadableStreamAsyncIteratorPrototype);\n iterator._asyncIteratorImpl = impl;\n return iterator;\n}\n\nfunction IsReadableStreamAsyncIterator(x: any): x is ReadableStreamAsyncIterator {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_asyncIteratorImpl')) {\n return false;\n }\n\n try {\n // noinspection SuspiciousTypeOfGuard\n return (x as ReadableStreamAsyncIteratorInstance)._asyncIteratorImpl instanceof\n ReadableStreamAsyncIteratorImpl;\n } catch {\n return false;\n }\n}\n\n// Helper functions for the ReadableStream.\n\nfunction streamAsyncIteratorBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStreamAsyncIterator.${name} can only be used on a ReadableSteamAsyncIterator`);\n}\n","/// \n\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN#Polyfill\nconst NumberIsNaN: typeof Number.isNaN = Number.isNaN || function (x) {\n // eslint-disable-next-line no-self-compare\n return x !== x;\n};\n\nexport default NumberIsNaN;\n","import NumberIsNaN from '../../stub/number-isnan';\nimport { ArrayBufferSlice } from './ecmascript';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function IsNonNegativeNumber(v: number): boolean {\n if (typeof v !== 'number') {\n return false;\n }\n\n if (NumberIsNaN(v)) {\n return false;\n }\n\n if (v < 0) {\n return false;\n }\n\n return true;\n}\n\nexport function CloneAsUint8Array(O: NonShared): NonShared {\n const buffer = ArrayBufferSlice(O.buffer, O.byteOffset, O.byteOffset + O.byteLength);\n return new Uint8Array(buffer) as NonShared;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsNonNegativeNumber } from './miscellaneous';\n\nexport interface QueueContainer {\n _queue: SimpleQueue;\n _queueTotalSize: number;\n}\n\nexport interface QueuePair {\n value: T;\n size: number;\n}\n\nexport function DequeueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.shift()!;\n container._queueTotalSize -= pair.size;\n if (container._queueTotalSize < 0) {\n container._queueTotalSize = 0;\n }\n\n return pair.value;\n}\n\nexport function EnqueueValueWithSize(container: QueueContainer>, value: T, size: number) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n if (!IsNonNegativeNumber(size) || size === Infinity) {\n throw new RangeError('Size must be a finite, non-NaN, non-negative number.');\n }\n\n container._queue.push({ value, size });\n container._queueTotalSize += size;\n}\n\nexport function PeekQueueValue(container: QueueContainer>): T {\n assert('_queue' in container && '_queueTotalSize' in container);\n assert(container._queue.length > 0);\n\n const pair = container._queue.peek();\n return pair.value;\n}\n\nexport function ResetQueue(container: QueueContainer) {\n assert('_queue' in container && '_queueTotalSize' in container);\n\n container._queue = new SimpleQueue();\n container._queueTotalSize = 0;\n}\n","export type TypedArray =\n | Int8Array\n | Uint8Array\n | Uint8ClampedArray\n | Int16Array\n | Uint16Array\n | Int32Array\n | Uint32Array\n | Float32Array\n | Float64Array;\n\nexport type NonShared = T & {\n buffer: ArrayBuffer;\n}\n\nexport interface ArrayBufferViewConstructor {\n new(buffer: ArrayBuffer, byteOffset: number, length?: number): T;\n\n readonly prototype: T;\n}\n\nexport interface TypedArrayConstructor extends ArrayBufferViewConstructor {\n readonly BYTES_PER_ELEMENT: number;\n}\n\nexport type DataViewConstructor = ArrayBufferViewConstructor;\n\nfunction isDataViewConstructor(ctor: Function): ctor is DataViewConstructor {\n return ctor === DataView;\n}\n\nexport function isDataView(view: ArrayBufferView): view is DataView {\n return isDataViewConstructor(view.constructor);\n}\n\nexport function arrayBufferViewElementSize(ctor: ArrayBufferViewConstructor): number {\n if (isDataViewConstructor(ctor)) {\n return 1;\n }\n return (ctor as unknown as TypedArrayConstructor).BYTES_PER_ELEMENT;\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport { ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n IsReadableStreamDefaultReader,\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n ReadableStreamHasDefaultReader,\n type ReadRequest\n} from './default-reader';\nimport {\n ReadableStreamAddReadIntoRequest,\n ReadableStreamFulfillReadIntoRequest,\n ReadableStreamGetNumReadIntoRequests,\n ReadableStreamHasBYOBReader,\n type ReadIntoRequest\n} from './byob-reader';\nimport NumberIsInteger from '../../stub/number-isinteger';\nimport {\n IsReadableStreamLocked,\n type ReadableByteStream,\n ReadableStreamClose,\n ReadableStreamError\n} from '../readable-stream';\nimport type { ValidatedUnderlyingByteSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport {\n ArrayBufferSlice,\n CanTransferArrayBuffer,\n CopyDataBlockBytes,\n IsDetachedBuffer,\n TransferArrayBuffer\n} from '../abstract-ops/ecmascript';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\nimport { assertRequiredArgument, convertUnsignedLongLongWithEnforceRange } from '../validators/basic';\nimport {\n type ArrayBufferViewConstructor,\n arrayBufferViewElementSize,\n type NonShared,\n type TypedArrayConstructor\n} from '../helpers/array-buffer-view';\n\n/**\n * A pull-into request in a {@link ReadableByteStreamController}.\n *\n * @public\n */\nexport class ReadableStreamBYOBRequest {\n /** @internal */\n _associatedReadableByteStreamController!: ReadableByteStreamController;\n /** @internal */\n _view!: NonShared | null;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the view for writing in to, or `null` if the BYOB request has already been responded to.\n */\n get view(): ArrayBufferView | null {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('view');\n }\n\n return this._view;\n }\n\n /**\n * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into\n * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer.\n *\n * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer\n * modifiable.\n */\n respond(bytesWritten: number): void;\n respond(bytesWritten: number | undefined): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respond');\n }\n assertRequiredArgument(bytesWritten, 1, 'respond');\n bytesWritten = convertUnsignedLongLongWithEnforceRange(bytesWritten, 'First parameter');\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(this._view!.buffer)) {\n throw new TypeError(`The BYOB request's buffer has been detached and so cannot be used as a response`);\n }\n\n assert(this._view!.byteLength > 0);\n assert(this._view!.buffer.byteLength > 0);\n\n ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);\n }\n\n /**\n * Indicates to the associated readable byte stream that instead of writing into\n * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`,\n * which will be given to the consumer of the readable byte stream.\n *\n * After this method is called, `view` will be transferred and no longer modifiable.\n */\n respondWithNewView(view: ArrayBufferView): void;\n respondWithNewView(view: NonShared): void {\n if (!IsReadableStreamBYOBRequest(this)) {\n throw byobRequestBrandCheckException('respondWithNewView');\n }\n assertRequiredArgument(view, 1, 'respondWithNewView');\n\n if (!ArrayBuffer.isView(view)) {\n throw new TypeError('You can only respond with array buffer views');\n }\n\n if (this._associatedReadableByteStreamController === undefined) {\n throw new TypeError('This BYOB request has been invalidated');\n }\n\n if (IsDetachedBuffer(view.buffer)) {\n throw new TypeError('The given view\\'s buffer has been detached and so cannot be used as a response');\n }\n\n ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBRequest.prototype, {\n respond: { enumerable: true },\n respondWithNewView: { enumerable: true },\n view: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respond, 'respond');\nsetFunctionName(ReadableStreamBYOBRequest.prototype.respondWithNewView, 'respondWithNewView');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBRequest.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBRequest',\n configurable: true\n });\n}\n\ninterface ByteQueueElement {\n buffer: ArrayBuffer;\n byteOffset: number;\n byteLength: number;\n}\n\ntype PullIntoDescriptor = NonShared> =\n DefaultPullIntoDescriptor\n | BYOBPullIntoDescriptor;\n\ninterface DefaultPullIntoDescriptor {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: TypedArrayConstructor;\n readerType: 'default' | 'none';\n}\n\ninterface BYOBPullIntoDescriptor = NonShared> {\n buffer: ArrayBuffer;\n bufferByteLength: number;\n byteOffset: number;\n byteLength: number;\n bytesFilled: number;\n minimumFill: number;\n elementSize: number;\n viewConstructor: ArrayBufferViewConstructor;\n readerType: 'byob' | 'none';\n}\n\n/**\n * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableByteStreamController {\n /** @internal */\n _controlledReadableByteStream!: ReadableByteStream;\n /** @internal */\n _queue!: SimpleQueue;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n /** @internal */\n _autoAllocateChunkSize: number | undefined;\n /** @internal */\n _byobRequest: ReadableStreamBYOBRequest | null;\n /** @internal */\n _pendingPullIntos!: SimpleQueue;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the current BYOB pull request, or `null` if there isn't one.\n */\n get byobRequest(): ReadableStreamBYOBRequest | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('byobRequest');\n }\n\n return ReadableByteStreamControllerGetBYOBRequest(this);\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('desiredSize');\n }\n\n return ReadableByteStreamControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('close');\n }\n\n if (this._closeRequested) {\n throw new TypeError('The stream has already been closed; do not close it again!');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be closed`);\n }\n\n ReadableByteStreamControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk chunk in the controlled readable stream.\n * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown.\n */\n enqueue(chunk: ArrayBufferView): void;\n enqueue(chunk: NonShared): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('enqueue');\n }\n\n assertRequiredArgument(chunk, 1, 'enqueue');\n if (!ArrayBuffer.isView(chunk)) {\n throw new TypeError('chunk must be an array buffer view');\n }\n if (chunk.byteLength === 0) {\n throw new TypeError('chunk must have non-zero byteLength');\n }\n if (chunk.buffer.byteLength === 0) {\n throw new TypeError(`chunk's buffer must have non-zero byteLength`);\n }\n\n if (this._closeRequested) {\n throw new TypeError('stream is closed or draining');\n }\n\n const state = this._controlledReadableByteStream._state;\n if (state !== 'readable') {\n throw new TypeError(`The stream (in ${state} state) is not in the readable state and cannot be enqueued to`);\n }\n\n ReadableByteStreamControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableByteStreamController(this)) {\n throw byteStreamControllerBrandCheckException('error');\n }\n\n ReadableByteStreamControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ReadableByteStreamControllerClearPendingPullIntos(this);\n\n ResetQueue(this);\n\n const result = this._cancelAlgorithm(reason);\n ReadableByteStreamControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest>): void {\n const stream = this._controlledReadableByteStream;\n assert(ReadableStreamHasDefaultReader(stream));\n\n if (this._queueTotalSize > 0) {\n assert(ReadableStreamGetNumReadRequests(stream) === 0);\n\n ReadableByteStreamControllerFillReadRequestFromQueue(this, readRequest);\n return;\n }\n\n const autoAllocateChunkSize = this._autoAllocateChunkSize;\n if (autoAllocateChunkSize !== undefined) {\n let buffer: ArrayBuffer;\n try {\n buffer = new ArrayBuffer(autoAllocateChunkSize);\n } catch (bufferE) {\n readRequest._errorSteps(bufferE);\n return;\n }\n\n const pullIntoDescriptor: DefaultPullIntoDescriptor = {\n buffer,\n bufferByteLength: autoAllocateChunkSize,\n byteOffset: 0,\n byteLength: autoAllocateChunkSize,\n bytesFilled: 0,\n minimumFill: 1,\n elementSize: 1,\n viewConstructor: Uint8Array,\n readerType: 'default'\n };\n\n this._pendingPullIntos.push(pullIntoDescriptor);\n }\n\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableByteStreamControllerCallPullIfNeeded(this);\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n if (this._pendingPullIntos.length > 0) {\n const firstPullInto = this._pendingPullIntos.peek();\n firstPullInto.readerType = 'none';\n\n this._pendingPullIntos = new SimpleQueue();\n this._pendingPullIntos.push(firstPullInto);\n }\n }\n}\n\nObject.defineProperties(ReadableByteStreamController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n byobRequest: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableByteStreamController.prototype.close, 'close');\nsetFunctionName(ReadableByteStreamController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableByteStreamController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableByteStreamController.prototype, Symbol.toStringTag, {\n value: 'ReadableByteStreamController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableByteStreamController.\n\nexport function IsReadableByteStreamController(x: any): x is ReadableByteStreamController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableByteStream')) {\n return false;\n }\n\n return x instanceof ReadableByteStreamController;\n}\n\nfunction IsReadableStreamBYOBRequest(x: any): x is ReadableStreamBYOBRequest {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBRequest;\n}\n\nfunction ReadableByteStreamControllerCallPullIfNeeded(controller: ReadableByteStreamController): void {\n const shouldPull = ReadableByteStreamControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n // TODO: Test controller argument\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableByteStreamControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableByteStreamControllerClearPendingPullIntos(controller: ReadableByteStreamController) {\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n controller._pendingPullIntos = new SimpleQueue();\n}\n\nfunction ReadableByteStreamControllerCommitPullIntoDescriptor>(\n stream: ReadableByteStream,\n pullIntoDescriptor: PullIntoDescriptor\n) {\n assert(stream._state !== 'errored');\n assert(pullIntoDescriptor.readerType !== 'none');\n\n let done = false;\n if (stream._state === 'closed') {\n assert(pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize === 0);\n done = true;\n }\n\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n if (pullIntoDescriptor.readerType === 'default') {\n ReadableStreamFulfillReadRequest(stream, filledView as unknown as NonShared, done);\n } else {\n assert(pullIntoDescriptor.readerType === 'byob');\n ReadableStreamFulfillReadIntoRequest(stream, filledView, done);\n }\n}\n\nfunction ReadableByteStreamControllerConvertPullIntoDescriptor>(\n pullIntoDescriptor: PullIntoDescriptor\n): T {\n const bytesFilled = pullIntoDescriptor.bytesFilled;\n const elementSize = pullIntoDescriptor.elementSize;\n\n assert(bytesFilled <= pullIntoDescriptor.byteLength);\n assert(bytesFilled % elementSize === 0);\n\n return new pullIntoDescriptor.viewConstructor(\n pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize) as T;\n}\n\nfunction ReadableByteStreamControllerEnqueueChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n controller._queue.push({ buffer, byteOffset, byteLength });\n controller._queueTotalSize += byteLength;\n}\n\nfunction ReadableByteStreamControllerEnqueueClonedChunkToQueue(controller: ReadableByteStreamController,\n buffer: ArrayBuffer,\n byteOffset: number,\n byteLength: number) {\n let clonedChunk;\n try {\n clonedChunk = ArrayBufferSlice(buffer, byteOffset, byteOffset + byteLength);\n } catch (cloneE) {\n ReadableByteStreamControllerError(controller, cloneE);\n throw cloneE;\n }\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, clonedChunk, 0, byteLength);\n}\n\nfunction ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.readerType === 'none');\n if (firstDescriptor.bytesFilled > 0) {\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n firstDescriptor.buffer,\n firstDescriptor.byteOffset,\n firstDescriptor.bytesFilled\n );\n }\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n}\n\nfunction ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller: ReadableByteStreamController,\n pullIntoDescriptor: PullIntoDescriptor) {\n const maxBytesToCopy = Math.min(controller._queueTotalSize,\n pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);\n const maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;\n\n let totalBytesToCopyRemaining = maxBytesToCopy;\n let ready = false;\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n const remainderBytes = maxBytesFilled % pullIntoDescriptor.elementSize;\n const maxAlignedBytes = maxBytesFilled - remainderBytes;\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n if (maxAlignedBytes >= pullIntoDescriptor.minimumFill) {\n totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;\n ready = true;\n }\n\n const queue = controller._queue;\n\n while (totalBytesToCopyRemaining > 0) {\n const headOfQueue = queue.peek();\n\n const bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);\n\n const destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n CopyDataBlockBytes(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);\n\n if (headOfQueue.byteLength === bytesToCopy) {\n queue.shift();\n } else {\n headOfQueue.byteOffset += bytesToCopy;\n headOfQueue.byteLength -= bytesToCopy;\n }\n controller._queueTotalSize -= bytesToCopy;\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);\n\n totalBytesToCopyRemaining -= bytesToCopy;\n }\n\n if (!ready) {\n assert(controller._queueTotalSize === 0);\n assert(pullIntoDescriptor.bytesFilled > 0);\n assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill);\n }\n\n return ready;\n}\n\nfunction ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller: ReadableByteStreamController,\n size: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos.peek() === pullIntoDescriptor);\n assert(controller._byobRequest === null);\n pullIntoDescriptor.bytesFilled += size;\n}\n\nfunction ReadableByteStreamControllerHandleQueueDrain(controller: ReadableByteStreamController) {\n assert(controller._controlledReadableByteStream._state === 'readable');\n\n if (controller._queueTotalSize === 0 && controller._closeRequested) {\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(controller._controlledReadableByteStream);\n } else {\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n }\n}\n\nfunction ReadableByteStreamControllerInvalidateBYOBRequest(controller: ReadableByteStreamController) {\n if (controller._byobRequest === null) {\n return;\n }\n\n controller._byobRequest._associatedReadableByteStreamController = undefined!;\n controller._byobRequest._view = null!;\n controller._byobRequest = null;\n}\n\nfunction ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller: ReadableByteStreamController) {\n assert(!controller._closeRequested);\n\n while (controller._pendingPullIntos.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n\n const pullIntoDescriptor = controller._pendingPullIntos.peek();\n assert(pullIntoDescriptor.readerType !== 'none');\n\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n ReadableByteStreamControllerCommitPullIntoDescriptor(\n controller._controlledReadableByteStream,\n pullIntoDescriptor\n );\n }\n }\n}\n\nfunction ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller: ReadableByteStreamController) {\n const reader = controller._controlledReadableByteStream._reader;\n assert(IsReadableStreamDefaultReader(reader));\n while (reader._readRequests.length > 0) {\n if (controller._queueTotalSize === 0) {\n return;\n }\n const readRequest = reader._readRequests.shift();\n ReadableByteStreamControllerFillReadRequestFromQueue(controller, readRequest);\n }\n}\n\nexport function ReadableByteStreamControllerPullInto>(\n controller: ReadableByteStreamController,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = controller._controlledReadableByteStream;\n\n const ctor = view.constructor as ArrayBufferViewConstructor;\n const elementSize = arrayBufferViewElementSize(ctor);\n\n const { byteOffset, byteLength } = view;\n\n const minimumFill = min * elementSize;\n assert(minimumFill >= elementSize && minimumFill <= byteLength);\n assert(minimumFill % elementSize === 0);\n\n let buffer: ArrayBuffer;\n try {\n buffer = TransferArrayBuffer(view.buffer);\n } catch (e) {\n readIntoRequest._errorSteps(e);\n return;\n }\n\n const pullIntoDescriptor: BYOBPullIntoDescriptor = {\n buffer,\n bufferByteLength: buffer.byteLength,\n byteOffset,\n byteLength,\n bytesFilled: 0,\n minimumFill,\n elementSize,\n viewConstructor: ctor,\n readerType: 'byob'\n };\n\n if (controller._pendingPullIntos.length > 0) {\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n // No ReadableByteStreamControllerCallPullIfNeeded() call since:\n // - No change happens on desiredSize\n // - The source has already been notified of that there's at least 1 pending read(view)\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n return;\n }\n\n if (stream._state === 'closed') {\n const emptyView = new ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);\n readIntoRequest._closeSteps(emptyView);\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor)) {\n const filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n readIntoRequest._chunkSteps(filledView);\n return;\n }\n\n if (controller._closeRequested) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n readIntoRequest._errorSteps(e);\n return;\n }\n }\n\n controller._pendingPullIntos.push(pullIntoDescriptor);\n\n ReadableStreamAddReadIntoRequest(stream, readIntoRequest);\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInClosedState(controller: ReadableByteStreamController,\n firstDescriptor: PullIntoDescriptor) {\n assert(firstDescriptor.bytesFilled % firstDescriptor.elementSize === 0);\n\n if (firstDescriptor.readerType === 'none') {\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n\n const stream = controller._controlledReadableByteStream;\n if (ReadableStreamHasBYOBReader(stream)) {\n while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n const pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);\n ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);\n }\n }\n}\n\nfunction ReadableByteStreamControllerRespondInReadableState(controller: ReadableByteStreamController,\n bytesWritten: number,\n pullIntoDescriptor: PullIntoDescriptor) {\n assert(pullIntoDescriptor.bytesFilled + bytesWritten <= pullIntoDescriptor.byteLength);\n\n ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);\n\n if (pullIntoDescriptor.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, pullIntoDescriptor);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n return;\n }\n\n if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.minimumFill) {\n // A descriptor for a read() request that is not yet filled up to its minimum length will stay at the head\n // of the queue, so the underlying source can keep filling it.\n return;\n }\n\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n\n const remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;\n if (remainderSize > 0) {\n const end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;\n ReadableByteStreamControllerEnqueueClonedChunkToQueue(\n controller,\n pullIntoDescriptor.buffer,\n end - remainderSize,\n remainderSize\n );\n }\n\n pullIntoDescriptor.bytesFilled -= remainderSize;\n ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableByteStream, pullIntoDescriptor);\n\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n}\n\nfunction ReadableByteStreamControllerRespondInternal(controller: ReadableByteStreamController, bytesWritten: number) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n assert(CanTransferArrayBuffer(firstDescriptor.buffer));\n\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n\n const state = controller._controlledReadableByteStream._state;\n if (state === 'closed') {\n assert(bytesWritten === 0);\n ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);\n } else {\n assert(state === 'readable');\n assert(bytesWritten > 0);\n ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nfunction ReadableByteStreamControllerShiftPendingPullInto(\n controller: ReadableByteStreamController\n): PullIntoDescriptor {\n assert(controller._byobRequest === null);\n const descriptor = controller._pendingPullIntos.shift()!;\n return descriptor;\n}\n\nfunction ReadableByteStreamControllerShouldCallPull(controller: ReadableByteStreamController): boolean {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return false;\n }\n\n if (controller._closeRequested) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (ReadableStreamHasDefaultReader(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n if (ReadableStreamHasBYOBReader(stream) && ReadableStreamGetNumReadIntoRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableByteStreamControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableByteStreamControllerClearAlgorithms(controller: ReadableByteStreamController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\n// A client of ReadableByteStreamController may use these functions directly to bypass state check.\n\nexport function ReadableByteStreamControllerClose(controller: ReadableByteStreamController) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n if (controller._queueTotalSize > 0) {\n controller._closeRequested = true;\n\n return;\n }\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (firstPendingPullInto.bytesFilled % firstPendingPullInto.elementSize !== 0) {\n const e = new TypeError('Insufficient bytes to fill elements in the given buffer');\n ReadableByteStreamControllerError(controller, e);\n\n throw e;\n }\n }\n\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n}\n\nexport function ReadableByteStreamControllerEnqueue(\n controller: ReadableByteStreamController,\n chunk: NonShared\n) {\n const stream = controller._controlledReadableByteStream;\n\n if (controller._closeRequested || stream._state !== 'readable') {\n return;\n }\n\n const { buffer, byteOffset, byteLength } = chunk;\n if (IsDetachedBuffer(buffer)) {\n throw new TypeError('chunk\\'s buffer is detached and so cannot be enqueued');\n }\n const transferredBuffer = TransferArrayBuffer(buffer);\n\n if (controller._pendingPullIntos.length > 0) {\n const firstPendingPullInto = controller._pendingPullIntos.peek();\n if (IsDetachedBuffer(firstPendingPullInto.buffer)) {\n throw new TypeError(\n 'The BYOB request\\'s buffer has been detached and so cannot be filled with an enqueued chunk'\n );\n }\n ReadableByteStreamControllerInvalidateBYOBRequest(controller);\n firstPendingPullInto.buffer = TransferArrayBuffer(firstPendingPullInto.buffer);\n if (firstPendingPullInto.readerType === 'none') {\n ReadableByteStreamControllerEnqueueDetachedPullIntoToQueue(controller, firstPendingPullInto);\n }\n }\n\n if (ReadableStreamHasDefaultReader(stream)) {\n ReadableByteStreamControllerProcessReadRequestsUsingQueue(controller);\n if (ReadableStreamGetNumReadRequests(stream) === 0) {\n assert(controller._pendingPullIntos.length === 0);\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n } else {\n assert(controller._queue.length === 0);\n if (controller._pendingPullIntos.length > 0) {\n assert(controller._pendingPullIntos.peek().readerType === 'default');\n ReadableByteStreamControllerShiftPendingPullInto(controller);\n }\n const transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);\n ReadableStreamFulfillReadRequest(stream, transferredView as NonShared, false);\n }\n } else if (ReadableStreamHasBYOBReader(stream)) {\n // TODO: Ideally in this branch detaching should happen only if the buffer is not consumed fully.\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);\n } else {\n assert(!IsReadableStreamLocked(stream));\n ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);\n }\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableByteStreamControllerError(controller: ReadableByteStreamController, e: any) {\n const stream = controller._controlledReadableByteStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ReadableByteStreamControllerClearPendingPullIntos(controller);\n\n ResetQueue(controller);\n ReadableByteStreamControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableByteStreamControllerFillReadRequestFromQueue(\n controller: ReadableByteStreamController,\n readRequest: ReadRequest>\n) {\n assert(controller._queueTotalSize > 0);\n\n const entry = controller._queue.shift();\n controller._queueTotalSize -= entry.byteLength;\n\n ReadableByteStreamControllerHandleQueueDrain(controller);\n\n const view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);\n readRequest._chunkSteps(view as NonShared);\n}\n\nexport function ReadableByteStreamControllerGetBYOBRequest(\n controller: ReadableByteStreamController\n): ReadableStreamBYOBRequest | null {\n if (controller._byobRequest === null && controller._pendingPullIntos.length > 0) {\n const firstDescriptor = controller._pendingPullIntos.peek();\n const view = new Uint8Array(firstDescriptor.buffer,\n firstDescriptor.byteOffset + firstDescriptor.bytesFilled,\n firstDescriptor.byteLength - firstDescriptor.bytesFilled);\n\n const byobRequest: ReadableStreamBYOBRequest = Object.create(ReadableStreamBYOBRequest.prototype);\n SetUpReadableStreamBYOBRequest(byobRequest, controller, view as NonShared);\n controller._byobRequest = byobRequest;\n }\n return controller._byobRequest;\n}\n\nfunction ReadableByteStreamControllerGetDesiredSize(controller: ReadableByteStreamController): number | null {\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nexport function ReadableByteStreamControllerRespond(controller: ReadableByteStreamController, bytesWritten: number) {\n assert(controller._pendingPullIntos.length > 0);\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (bytesWritten !== 0) {\n throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (bytesWritten === 0) {\n throw new TypeError('bytesWritten must be greater than 0 when calling respond() on a readable stream');\n }\n if (firstDescriptor.bytesFilled + bytesWritten > firstDescriptor.byteLength) {\n throw new RangeError('bytesWritten out of range');\n }\n }\n\n firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);\n\n ReadableByteStreamControllerRespondInternal(controller, bytesWritten);\n}\n\nexport function ReadableByteStreamControllerRespondWithNewView(controller: ReadableByteStreamController,\n view: NonShared) {\n assert(controller._pendingPullIntos.length > 0);\n assert(!IsDetachedBuffer(view.buffer));\n\n const firstDescriptor = controller._pendingPullIntos.peek();\n const state = controller._controlledReadableByteStream._state;\n\n if (state === 'closed') {\n if (view.byteLength !== 0) {\n throw new TypeError('The view\\'s length must be 0 when calling respondWithNewView() on a closed stream');\n }\n } else {\n assert(state === 'readable');\n if (view.byteLength === 0) {\n throw new TypeError(\n 'The view\\'s length must be greater than 0 when calling respondWithNewView() on a readable stream'\n );\n }\n }\n\n if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {\n throw new RangeError('The region specified by view does not match byobRequest');\n }\n if (firstDescriptor.bufferByteLength !== view.buffer.byteLength) {\n throw new RangeError('The buffer of view has different capacity than byobRequest');\n }\n if (firstDescriptor.bytesFilled + view.byteLength > firstDescriptor.byteLength) {\n throw new RangeError('The region specified by view is larger than byobRequest');\n }\n\n const viewByteLength = view.byteLength;\n firstDescriptor.buffer = TransferArrayBuffer(view.buffer);\n ReadableByteStreamControllerRespondInternal(controller, viewByteLength);\n}\n\nexport function SetUpReadableByteStreamController(stream: ReadableByteStream,\n controller: ReadableByteStreamController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n autoAllocateChunkSize: number | undefined) {\n assert(stream._readableStreamController === undefined);\n if (autoAllocateChunkSize !== undefined) {\n assert(NumberIsInteger(autoAllocateChunkSize));\n assert(autoAllocateChunkSize > 0);\n }\n\n controller._controlledReadableByteStream = stream;\n\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._byobRequest = null;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._closeRequested = false;\n controller._started = false;\n\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._autoAllocateChunkSize = autoAllocateChunkSize;\n\n controller._pendingPullIntos = new SimpleQueue();\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableByteStreamControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableByteStreamControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableByteStreamControllerFromUnderlyingSource(\n stream: ReadableByteStream,\n underlyingByteSource: ValidatedUnderlyingByteSource,\n highWaterMark: number\n) {\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingByteSource.start !== undefined) {\n startAlgorithm = () => underlyingByteSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingByteSource.pull !== undefined) {\n pullAlgorithm = () => underlyingByteSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingByteSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingByteSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n const autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;\n if (autoAllocateChunkSize === 0) {\n throw new TypeError('autoAllocateChunkSize must be greater than 0');\n }\n\n SetUpReadableByteStreamController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, autoAllocateChunkSize\n );\n}\n\nfunction SetUpReadableStreamBYOBRequest(request: ReadableStreamBYOBRequest,\n controller: ReadableByteStreamController,\n view: NonShared) {\n assert(IsReadableByteStreamController(controller));\n assert(typeof view === 'object');\n assert(ArrayBuffer.isView(view));\n assert(!IsDetachedBuffer(view.buffer));\n request._associatedReadableByteStreamController = controller;\n request._view = view;\n}\n\n// Helper functions for the ReadableStreamBYOBRequest.\n\nfunction byobRequestBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBRequest.prototype.${name} can only be used on a ReadableStreamBYOBRequest`);\n}\n\n// Helper functions for the ReadableByteStreamController.\n\nfunction byteStreamControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableByteStreamController.prototype.${name} can only be used on a ReadableByteStreamController`);\n}\n","import { assertDictionary, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from '../readable-stream/reader-options';\n\nexport function convertReaderOptions(options: ReadableStreamGetReaderOptions | null | undefined,\n context: string): ReadableStreamGetReaderOptions {\n assertDictionary(options, context);\n const mode = options?.mode;\n return {\n mode: mode === undefined ? undefined : convertReadableStreamReaderMode(mode, `${context} has member 'mode' that`)\n };\n}\n\nfunction convertReadableStreamReaderMode(mode: string, context: string): 'byob' {\n mode = `${mode}`;\n if (mode !== 'byob') {\n throw new TypeError(`${context} '${mode}' is not a valid enumeration value for ReadableStreamReaderMode`);\n }\n return mode;\n}\n\nexport function convertByobReadOptions(\n options: ReadableStreamBYOBReaderReadOptions | null | undefined,\n context: string\n): ValidatedReadableStreamBYOBReaderReadOptions {\n assertDictionary(options, context);\n const min = options?.min ?? 1;\n return {\n min: convertUnsignedLongLongWithEnforceRange(\n min,\n `${context} has member 'min' that`\n )\n };\n}\n","import assert from '../../stub/assert';\nimport { SimpleQueue } from '../simple-queue';\nimport {\n ReadableStreamReaderGenericCancel,\n ReadableStreamReaderGenericInitialize,\n ReadableStreamReaderGenericRelease,\n readerLockException\n} from './generic-reader';\nimport { IsReadableStreamLocked, type ReadableByteStream, type ReadableStream } from '../readable-stream';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamController,\n ReadableByteStreamControllerPullInto\n} from './byte-stream-controller';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { newPromise, promiseRejectedWith } from '../helpers/webidl';\nimport { assertRequiredArgument } from '../validators/basic';\nimport { assertReadableStream } from '../validators/readable-stream';\nimport { IsDetachedBuffer } from '../abstract-ops/ecmascript';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ValidatedReadableStreamBYOBReaderReadOptions\n} from './reader-options';\nimport { convertByobReadOptions } from '../validators/reader-options';\nimport { isDataView, type NonShared, type TypedArray } from '../helpers/array-buffer-view';\n\n/**\n * A result returned by {@link ReadableStreamBYOBReader.read}.\n *\n * @public\n */\nexport type ReadableStreamBYOBReadResult = {\n done: false;\n value: T;\n} | {\n done: true;\n value: T | undefined;\n};\n\n// Abstract operations for the ReadableStream.\n\nexport function AcquireReadableStreamBYOBReader(stream: ReadableByteStream): ReadableStreamBYOBReader {\n return new ReadableStreamBYOBReader(stream as ReadableStream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadIntoRequest>(\n stream: ReadableByteStream,\n readIntoRequest: ReadIntoRequest\n): void {\n assert(IsReadableStreamBYOBReader(stream._reader));\n assert(stream._state === 'readable' || stream._state === 'closed');\n\n (stream._reader! as ReadableStreamBYOBReader)._readIntoRequests.push(readIntoRequest);\n}\n\nexport function ReadableStreamFulfillReadIntoRequest(stream: ReadableByteStream,\n chunk: ArrayBufferView,\n done: boolean) {\n const reader = stream._reader as ReadableStreamBYOBReader;\n\n assert(reader._readIntoRequests.length > 0);\n\n const readIntoRequest = reader._readIntoRequests.shift()!;\n if (done) {\n readIntoRequest._closeSteps(chunk);\n } else {\n readIntoRequest._chunkSteps(chunk);\n }\n}\n\nexport function ReadableStreamGetNumReadIntoRequests(stream: ReadableByteStream): number {\n return (stream._reader as ReadableStreamBYOBReader)._readIntoRequests.length;\n}\n\nexport function ReadableStreamHasBYOBReader(stream: ReadableByteStream): boolean {\n const reader = stream._reader;\n\n if (reader === undefined) {\n return false;\n }\n\n if (!IsReadableStreamBYOBReader(reader)) {\n return false;\n }\n\n return true;\n}\n\n// Readers\n\nexport interface ReadIntoRequest> {\n _chunkSteps(chunk: T): void;\n\n _closeSteps(chunk: T | undefined): void;\n\n _errorSteps(e: any): void;\n}\n\n/**\n * A BYOB reader vended by a {@link ReadableStream}.\n *\n * @public\n */\nexport class ReadableStreamBYOBReader {\n /** @internal */\n _ownerReadableStream!: ReadableByteStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _readIntoRequests: SimpleQueue>;\n\n constructor(stream: ReadableStream) {\n assertRequiredArgument(stream, 1, 'ReadableStreamBYOBReader');\n assertReadableStream(stream, 'First parameter');\n\n if (IsReadableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive reading by another reader');\n }\n\n if (!IsReadableByteStreamController(stream._readableStreamController)) {\n throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' +\n 'source');\n }\n\n ReadableStreamReaderGenericInitialize(this, stream);\n\n this._readIntoRequests = new SimpleQueue();\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the reader's lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('cancel'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('cancel'));\n }\n\n return ReadableStreamReaderGenericCancel(this, reason);\n }\n\n /**\n * Attempts to reads bytes into view, and returns a promise resolved with the result.\n *\n * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source.\n */\n read(\n view: T,\n options?: ReadableStreamBYOBReaderReadOptions\n ): Promise>;\n read>(\n view: T,\n rawOptions: ReadableStreamBYOBReaderReadOptions | null | undefined = {}\n ): Promise> {\n if (!IsReadableStreamBYOBReader(this)) {\n return promiseRejectedWith(byobReaderBrandCheckException('read'));\n }\n\n if (!ArrayBuffer.isView(view)) {\n return promiseRejectedWith(new TypeError('view must be an array buffer view'));\n }\n if (view.byteLength === 0) {\n return promiseRejectedWith(new TypeError('view must have non-zero byteLength'));\n }\n if (view.buffer.byteLength === 0) {\n return promiseRejectedWith(new TypeError(`view's buffer must have non-zero byteLength`));\n }\n if (IsDetachedBuffer(view.buffer)) {\n return promiseRejectedWith(new TypeError('view\\'s buffer has been detached'));\n }\n\n let options: ValidatedReadableStreamBYOBReaderReadOptions;\n try {\n options = convertByobReadOptions(rawOptions, 'options');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const min = options.min;\n if (min === 0) {\n return promiseRejectedWith(new TypeError('options.min must be greater than 0'));\n }\n if (!isDataView(view)) {\n if (min > (view as unknown as TypedArray).length) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s length'));\n }\n } else if (min > view.byteLength) {\n return promiseRejectedWith(new RangeError('options.min must be less than or equal to view\\'s byteLength'));\n }\n\n if (this._ownerReadableStream === undefined) {\n return promiseRejectedWith(readerLockException('read from'));\n }\n\n let resolvePromise!: (result: ReadableStreamBYOBReadResult) => void;\n let rejectPromise!: (reason: any) => void;\n const promise = newPromise>((resolve, reject) => {\n resolvePromise = resolve;\n rejectPromise = reject;\n });\n const readIntoRequest: ReadIntoRequest = {\n _chunkSteps: chunk => resolvePromise({ value: chunk, done: false }),\n _closeSteps: chunk => resolvePromise({ value: chunk, done: true }),\n _errorSteps: e => rejectPromise(e)\n };\n ReadableStreamBYOBReaderRead(this, view, min, readIntoRequest);\n return promise;\n }\n\n /**\n * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active.\n * If the associated stream is errored when the lock is released, the reader will appear errored in the same way\n * from now on; otherwise, the reader will appear closed.\n *\n * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by\n * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to\n * do so will throw a `TypeError` and leave the reader locked to the stream.\n */\n releaseLock(): void {\n if (!IsReadableStreamBYOBReader(this)) {\n throw byobReaderBrandCheckException('releaseLock');\n }\n\n if (this._ownerReadableStream === undefined) {\n return;\n }\n\n ReadableStreamBYOBReaderRelease(this);\n }\n}\n\nObject.defineProperties(ReadableStreamBYOBReader.prototype, {\n cancel: { enumerable: true },\n read: { enumerable: true },\n releaseLock: { enumerable: true },\n closed: { enumerable: true }\n});\nsetFunctionName(ReadableStreamBYOBReader.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStreamBYOBReader.prototype.read, 'read');\nsetFunctionName(ReadableStreamBYOBReader.prototype.releaseLock, 'releaseLock');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamBYOBReader.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamBYOBReader',\n configurable: true\n });\n}\n\n// Abstract operations for the readers.\n\nexport function IsReadableStreamBYOBReader(x: any): x is ReadableStreamBYOBReader {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {\n return false;\n }\n\n return x instanceof ReadableStreamBYOBReader;\n}\n\nexport function ReadableStreamBYOBReaderRead>(\n reader: ReadableStreamBYOBReader,\n view: T,\n min: number,\n readIntoRequest: ReadIntoRequest\n): void {\n const stream = reader._ownerReadableStream;\n\n assert(stream !== undefined);\n\n stream._disturbed = true;\n\n if (stream._state === 'errored') {\n readIntoRequest._errorSteps(stream._storedError);\n } else {\n ReadableByteStreamControllerPullInto(\n stream._readableStreamController as ReadableByteStreamController,\n view,\n min,\n readIntoRequest\n );\n }\n}\n\nexport function ReadableStreamBYOBReaderRelease(reader: ReadableStreamBYOBReader) {\n ReadableStreamReaderGenericRelease(reader);\n const e = new TypeError('Reader was released');\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n}\n\nexport function ReadableStreamBYOBReaderErrorReadIntoRequests(reader: ReadableStreamBYOBReader, e: any) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._errorSteps(e);\n });\n}\n\n// Helper functions for the ReadableStreamBYOBReader.\n\nfunction byobReaderBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamBYOBReader.prototype.${name} can only be used on a ReadableStreamBYOBReader`);\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport NumberIsNaN from '../../stub/number-isnan';\n\nexport function ExtractHighWaterMark(strategy: QueuingStrategy, defaultHWM: number): number {\n const { highWaterMark } = strategy;\n\n if (highWaterMark === undefined) {\n return defaultHWM;\n }\n\n if (NumberIsNaN(highWaterMark) || highWaterMark < 0) {\n throw new RangeError('Invalid highWaterMark');\n }\n\n return highWaterMark;\n}\n\nexport function ExtractSizeAlgorithm(strategy: QueuingStrategy): QueuingStrategySizeCallback {\n const { size } = strategy;\n\n if (!size) {\n return () => 1;\n }\n\n return size;\n}\n","import type { QueuingStrategy, QueuingStrategySizeCallback } from '../queuing-strategy';\nimport { assertDictionary, assertFunction, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategy(init: QueuingStrategy | null | undefined,\n context: string): QueuingStrategy {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n const size = init?.size;\n return {\n highWaterMark: highWaterMark === undefined ? undefined : convertUnrestrictedDouble(highWaterMark),\n size: size === undefined ? undefined : convertQueuingStrategySize(size, `${context} has member 'size' that`)\n };\n}\n\nfunction convertQueuingStrategySize(fn: QueuingStrategySizeCallback,\n context: string): QueuingStrategySizeCallback {\n assertFunction(fn, context);\n return chunk => convertUnrestrictedDouble(fn(chunk));\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from '../writable-stream/underlying-sink';\nimport { WritableStreamDefaultController } from '../writable-stream';\n\nexport function convertUnderlyingSink(original: UnderlyingSink | null,\n context: string): ValidatedUnderlyingSink {\n assertDictionary(original, context);\n const abort = original?.abort;\n const close = original?.close;\n const start = original?.start;\n const type = original?.type;\n const write = original?.write;\n return {\n abort: abort === undefined ?\n undefined :\n convertUnderlyingSinkAbortCallback(abort, original!, `${context} has member 'abort' that`),\n close: close === undefined ?\n undefined :\n convertUnderlyingSinkCloseCallback(close, original!, `${context} has member 'close' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSinkStartCallback(start, original!, `${context} has member 'start' that`),\n write: write === undefined ?\n undefined :\n convertUnderlyingSinkWriteCallback(write, original!, `${context} has member 'write' that`),\n type\n };\n}\n\nfunction convertUnderlyingSinkAbortCallback(\n fn: UnderlyingSinkAbortCallback,\n original: UnderlyingSink,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSinkCloseCallback(\n fn: UnderlyingSinkCloseCallback,\n original: UnderlyingSink,\n context: string\n): () => Promise {\n assertFunction(fn, context);\n return () => promiseCall(fn, original, []);\n}\n\nfunction convertUnderlyingSinkStartCallback(\n fn: UnderlyingSinkStartCallback,\n original: UnderlyingSink,\n context: string\n): UnderlyingSinkStartCallback {\n assertFunction(fn, context);\n return (controller: WritableStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSinkWriteCallback(\n fn: UnderlyingSinkWriteCallback,\n original: UnderlyingSink,\n context: string\n): (chunk: W, controller: WritableStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: W, controller: WritableStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n","import { IsWritableStream, WritableStream } from '../writable-stream';\n\nexport function assertWritableStream(x: unknown, context: string): asserts x is WritableStream {\n if (!IsWritableStream(x)) {\n throw new TypeError(`${context} is not a WritableStream.`);\n }\n}\n","/**\n * A signal object that allows you to communicate with a request and abort it if required\n * via its associated `AbortController` object.\n *\n * @remarks\n * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @public\n */\nexport interface AbortSignal {\n /**\n * Whether the request is aborted.\n */\n readonly aborted: boolean;\n\n /**\n * If aborted, returns the reason for aborting.\n */\n readonly reason?: any;\n\n /**\n * Add an event listener to be triggered when this signal becomes aborted.\n */\n addEventListener(type: 'abort', listener: () => void): void;\n\n /**\n * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}.\n */\n removeEventListener(type: 'abort', listener: () => void): void;\n}\n\nexport function isAbortSignal(value: unknown): value is AbortSignal {\n if (typeof value !== 'object' || value === null) {\n return false;\n }\n try {\n return typeof (value as AbortSignal).aborted === 'boolean';\n } catch {\n // AbortSignal.prototype.aborted throws if its brand check fails\n return false;\n }\n}\n\n/**\n * A controller object that allows you to abort an `AbortSignal` when desired.\n *\n * @remarks\n * This interface is compatible with the `AbortController` interface defined in TypeScript's DOM types.\n * It is redefined here, so it can be polyfilled without a DOM, for example with\n * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment.\n *\n * @internal\n */\nexport interface AbortController {\n readonly signal: AbortSignal;\n\n abort(reason?: any): void;\n}\n\ninterface AbortControllerConstructor {\n new(): AbortController;\n}\n\nconst supportsAbortController = typeof (AbortController as any) === 'function';\n\n/**\n * Construct a new AbortController, if supported by the platform.\n *\n * @internal\n */\nexport function createAbortController(): AbortController | undefined {\n if (supportsAbortController) {\n return new (AbortController as AbortControllerConstructor)();\n }\n return undefined;\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponPromise\n} from './helpers/webidl';\nimport {\n DequeueValue,\n EnqueueValueWithSize,\n PeekQueueValue,\n type QueuePair,\n ResetQueue\n} from './abstract-ops/queue-with-sizes';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { SimpleQueue } from './simple-queue';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { AbortSteps, ErrorSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport type {\n UnderlyingSink,\n UnderlyingSinkAbortCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n ValidatedUnderlyingSink\n} from './writable-stream/underlying-sink';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertUnderlyingSink } from './validators/underlying-sink';\nimport { assertWritableStream } from './validators/writable-stream';\nimport { type AbortController, type AbortSignal, createAbortController } from './abort-signal';\n\ntype WritableStreamState = 'writable' | 'closed' | 'erroring' | 'errored';\n\ninterface WriteOrCloseRequest {\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n}\n\ntype WriteRequest = WriteOrCloseRequest;\ntype CloseRequest = WriteOrCloseRequest;\n\ninterface PendingAbortRequest {\n _promise: Promise;\n _resolve: (value?: undefined) => void;\n _reject: (reason: any) => void;\n _reason: any;\n _wasAlreadyErroring: boolean;\n}\n\n/**\n * A writable stream represents a destination for data, into which you can write.\n *\n * @public\n */\nclass WritableStream {\n /** @internal */\n _state!: WritableStreamState;\n /** @internal */\n _storedError: any;\n /** @internal */\n _writer: WritableStreamDefaultWriter | undefined;\n /** @internal */\n _writableStreamController!: WritableStreamDefaultController;\n /** @internal */\n _writeRequests!: SimpleQueue;\n /** @internal */\n _inFlightWriteRequest: WriteRequest | undefined;\n /** @internal */\n _closeRequest: CloseRequest | undefined;\n /** @internal */\n _inFlightCloseRequest: CloseRequest | undefined;\n /** @internal */\n _pendingAbortRequest: PendingAbortRequest | undefined;\n /** @internal */\n _backpressure!: boolean;\n\n constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSink: UnderlyingSink | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSink === undefined) {\n rawUnderlyingSink = null;\n } else {\n assertObject(rawUnderlyingSink, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSink = convertUnderlyingSink(rawUnderlyingSink, 'First parameter');\n\n InitializeWritableStream(this);\n\n const type = underlyingSink.type;\n if (type !== undefined) {\n throw new RangeError('Invalid type is specified');\n }\n\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n\n SetUpWritableStreamDefaultControllerFromUnderlyingSink(this, underlyingSink, highWaterMark, sizeAlgorithm);\n }\n\n /**\n * Returns whether or not the writable stream is locked to a writer.\n */\n get locked(): boolean {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsWritableStreamLocked(this);\n }\n\n /**\n * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be\n * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort\n * mechanism of the underlying sink.\n *\n * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled\n * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel\n * the stream) if the stream is currently locked.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('abort'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot abort a stream that already has a writer'));\n }\n\n return WritableStreamAbort(this, reason);\n }\n\n /**\n * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its\n * close behavior. During this time any further attempts to write will fail (without erroring the stream).\n *\n * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream\n * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with\n * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked.\n */\n close() {\n if (!IsWritableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('close'));\n }\n\n if (IsWritableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot close a stream that already has a writer'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(this)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamClose(this);\n }\n\n /**\n * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream\n * is locked, no other writer can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to write to a stream\n * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at\n * the same time, which would cause the resulting written data to be unpredictable and probably useless.\n */\n getWriter(): WritableStreamDefaultWriter {\n if (!IsWritableStream(this)) {\n throw streamBrandCheckException('getWriter');\n }\n\n return AcquireWritableStreamDefaultWriter(this);\n }\n}\n\nObject.defineProperties(WritableStream.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n getWriter: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(WritableStream.prototype.abort, 'abort');\nsetFunctionName(WritableStream.prototype.close, 'close');\nsetFunctionName(WritableStream.prototype.getWriter, 'getWriter');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStream.prototype, Symbol.toStringTag, {\n value: 'WritableStream',\n configurable: true\n });\n}\n\nexport {\n AcquireWritableStreamDefaultWriter,\n CreateWritableStream,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamDefaultControllerErrorIfNeeded,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite,\n WritableStreamCloseQueuedOrInFlight\n};\n\nexport type {\n UnderlyingSink,\n UnderlyingSinkStartCallback,\n UnderlyingSinkWriteCallback,\n UnderlyingSinkCloseCallback,\n UnderlyingSinkAbortCallback\n};\n\n// Abstract operations for the WritableStream.\n\nfunction AcquireWritableStreamDefaultWriter(stream: WritableStream): WritableStreamDefaultWriter {\n return new WritableStreamDefaultWriter(stream);\n}\n\n// Throws if and only if startAlgorithm throws.\nfunction CreateWritableStream(startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: WritableStream = Object.create(WritableStream.prototype);\n InitializeWritableStream(stream);\n\n const controller: WritableStreamDefaultController = Object.create(WritableStreamDefaultController.prototype);\n\n SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,\n abortAlgorithm, highWaterMark, sizeAlgorithm);\n return stream;\n}\n\nfunction InitializeWritableStream(stream: WritableStream) {\n stream._state = 'writable';\n\n // The error that will be reported by new method calls once the state becomes errored. Only set when [[state]] is\n // 'erroring' or 'errored'. May be set to an undefined value.\n stream._storedError = undefined;\n\n stream._writer = undefined;\n\n // Initialize to undefined first because the constructor of the controller checks this\n // variable to validate the caller.\n stream._writableStreamController = undefined!;\n\n // This queue is placed here instead of the writer class in order to allow for passing a writer to the next data\n // producer without waiting for the queued writes to finish.\n stream._writeRequests = new SimpleQueue();\n\n // Write requests are removed from _writeRequests when write() is called on the underlying sink. This prevents\n // them from being erroneously rejected on error. If a write() call is in-flight, the request is stored here.\n stream._inFlightWriteRequest = undefined;\n\n // The promise that was returned from writer.close(). Stored here because it may be fulfilled after the writer\n // has been detached.\n stream._closeRequest = undefined;\n\n // Close request is removed from _closeRequest when close() is called on the underlying sink. This prevents it\n // from being erroneously rejected on error. If a close() call is in-flight, the request is stored here.\n stream._inFlightCloseRequest = undefined;\n\n // The promise that was returned from writer.abort(). This may also be fulfilled after the writer has detached.\n stream._pendingAbortRequest = undefined;\n\n // The backpressure signal set by the controller.\n stream._backpressure = false;\n}\n\nfunction IsWritableStream(x: unknown): x is WritableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {\n return false;\n }\n\n return x instanceof WritableStream;\n}\n\nfunction IsWritableStreamLocked(stream: WritableStream): boolean {\n assert(IsWritableStream(stream));\n\n if (stream._writer === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamAbort(stream: WritableStream, reason: any): Promise {\n if (stream._state === 'closed' || stream._state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n stream._writableStreamController._abortReason = reason;\n stream._writableStreamController._abortController?.abort(reason);\n\n // TypeScript narrows the type of `stream._state` down to 'writable' | 'erroring',\n // but it doesn't know that signaling abort runs author code that might have changed the state.\n // Widen the type again by casting to WritableStreamState.\n const state = stream._state as WritableStreamState;\n\n if (state === 'closed' || state === 'errored') {\n return promiseResolvedWith(undefined);\n }\n if (stream._pendingAbortRequest !== undefined) {\n return stream._pendingAbortRequest._promise;\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n let wasAlreadyErroring = false;\n if (state === 'erroring') {\n wasAlreadyErroring = true;\n // reason will not be used, so don't keep a reference to it.\n reason = undefined;\n }\n\n const promise = newPromise((resolve, reject) => {\n stream._pendingAbortRequest = {\n _promise: undefined!,\n _resolve: resolve,\n _reject: reject,\n _reason: reason,\n _wasAlreadyErroring: wasAlreadyErroring\n };\n });\n stream._pendingAbortRequest!._promise = promise;\n\n if (!wasAlreadyErroring) {\n WritableStreamStartErroring(stream, reason);\n }\n\n return promise;\n}\n\nfunction WritableStreamClose(stream: WritableStream): Promise {\n const state = stream._state;\n if (state === 'closed' || state === 'errored') {\n return promiseRejectedWith(new TypeError(\n `The stream (in ${state} state) is not in the writable state and cannot be closed`));\n }\n\n assert(state === 'writable' || state === 'erroring');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const promise = newPromise((resolve, reject) => {\n const closeRequest: CloseRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._closeRequest = closeRequest;\n });\n\n const writer = stream._writer;\n if (writer !== undefined && stream._backpressure && state === 'writable') {\n defaultWriterReadyPromiseResolve(writer);\n }\n\n WritableStreamDefaultControllerClose(stream._writableStreamController);\n\n return promise;\n}\n\n// WritableStream API exposed for controllers.\n\nfunction WritableStreamAddWriteRequest(stream: WritableStream): Promise {\n assert(IsWritableStreamLocked(stream));\n assert(stream._state === 'writable');\n\n const promise = newPromise((resolve, reject) => {\n const writeRequest: WriteRequest = {\n _resolve: resolve,\n _reject: reject\n };\n\n stream._writeRequests.push(writeRequest);\n });\n\n return promise;\n}\n\nfunction WritableStreamDealWithRejection(stream: WritableStream, error: any) {\n const state = stream._state;\n\n if (state === 'writable') {\n WritableStreamStartErroring(stream, error);\n return;\n }\n\n assert(state === 'erroring');\n WritableStreamFinishErroring(stream);\n}\n\nfunction WritableStreamStartErroring(stream: WritableStream, reason: any) {\n assert(stream._storedError === undefined);\n assert(stream._state === 'writable');\n\n const controller = stream._writableStreamController;\n assert(controller !== undefined);\n\n stream._state = 'erroring';\n stream._storedError = reason;\n const writer = stream._writer;\n if (writer !== undefined) {\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);\n }\n\n if (!WritableStreamHasOperationMarkedInFlight(stream) && controller._started) {\n WritableStreamFinishErroring(stream);\n }\n}\n\nfunction WritableStreamFinishErroring(stream: WritableStream) {\n assert(stream._state === 'erroring');\n assert(!WritableStreamHasOperationMarkedInFlight(stream));\n stream._state = 'errored';\n stream._writableStreamController[ErrorSteps]();\n\n const storedError = stream._storedError;\n stream._writeRequests.forEach(writeRequest => {\n writeRequest._reject(storedError);\n });\n stream._writeRequests = new SimpleQueue();\n\n if (stream._pendingAbortRequest === undefined) {\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const abortRequest = stream._pendingAbortRequest;\n stream._pendingAbortRequest = undefined;\n\n if (abortRequest._wasAlreadyErroring) {\n abortRequest._reject(storedError);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return;\n }\n\n const promise = stream._writableStreamController[AbortSteps](abortRequest._reason);\n uponPromise(\n promise,\n () => {\n abortRequest._resolve();\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n },\n (reason: any) => {\n abortRequest._reject(reason);\n WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);\n return null;\n });\n}\n\nfunction WritableStreamFinishInFlightWrite(stream: WritableStream) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._resolve(undefined);\n stream._inFlightWriteRequest = undefined;\n}\n\nfunction WritableStreamFinishInFlightWriteWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightWriteRequest !== undefined);\n stream._inFlightWriteRequest!._reject(error);\n stream._inFlightWriteRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n WritableStreamDealWithRejection(stream, error);\n}\n\nfunction WritableStreamFinishInFlightClose(stream: WritableStream) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._resolve(undefined);\n stream._inFlightCloseRequest = undefined;\n\n const state = stream._state;\n\n assert(state === 'writable' || state === 'erroring');\n\n if (state === 'erroring') {\n // The error was too late to do anything, so it is ignored.\n stream._storedError = undefined;\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._resolve();\n stream._pendingAbortRequest = undefined;\n }\n }\n\n stream._state = 'closed';\n\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseResolve(writer);\n }\n\n assert(stream._pendingAbortRequest === undefined);\n assert(stream._storedError === undefined);\n}\n\nfunction WritableStreamFinishInFlightCloseWithError(stream: WritableStream, error: any) {\n assert(stream._inFlightCloseRequest !== undefined);\n stream._inFlightCloseRequest!._reject(error);\n stream._inFlightCloseRequest = undefined;\n\n assert(stream._state === 'writable' || stream._state === 'erroring');\n\n // Never execute sink abort() after sink close().\n if (stream._pendingAbortRequest !== undefined) {\n stream._pendingAbortRequest._reject(error);\n stream._pendingAbortRequest = undefined;\n }\n WritableStreamDealWithRejection(stream, error);\n}\n\n// TODO(ricea): Fix alphabetical order.\nfunction WritableStreamCloseQueuedOrInFlight(stream: WritableStream): boolean {\n if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamHasOperationMarkedInFlight(stream: WritableStream): boolean {\n if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {\n return false;\n }\n\n return true;\n}\n\nfunction WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightCloseRequest === undefined);\n assert(stream._closeRequest !== undefined);\n stream._inFlightCloseRequest = stream._closeRequest;\n stream._closeRequest = undefined;\n}\n\nfunction WritableStreamMarkFirstWriteRequestInFlight(stream: WritableStream) {\n assert(stream._inFlightWriteRequest === undefined);\n assert(stream._writeRequests.length !== 0);\n stream._inFlightWriteRequest = stream._writeRequests.shift();\n}\n\nfunction WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream: WritableStream) {\n assert(stream._state === 'errored');\n if (stream._closeRequest !== undefined) {\n assert(stream._inFlightCloseRequest === undefined);\n\n stream._closeRequest._reject(stream._storedError);\n stream._closeRequest = undefined;\n }\n const writer = stream._writer;\n if (writer !== undefined) {\n defaultWriterClosedPromiseReject(writer, stream._storedError);\n }\n}\n\nfunction WritableStreamUpdateBackpressure(stream: WritableStream, backpressure: boolean) {\n assert(stream._state === 'writable');\n assert(!WritableStreamCloseQueuedOrInFlight(stream));\n\n const writer = stream._writer;\n if (writer !== undefined && backpressure !== stream._backpressure) {\n if (backpressure) {\n defaultWriterReadyPromiseReset(writer);\n } else {\n assert(!backpressure);\n\n defaultWriterReadyPromiseResolve(writer);\n }\n }\n\n stream._backpressure = backpressure;\n}\n\n/**\n * A default writer vended by a {@link WritableStream}.\n *\n * @public\n */\nexport class WritableStreamDefaultWriter {\n /** @internal */\n _ownerWritableStream: WritableStream;\n /** @internal */\n _closedPromise!: Promise;\n /** @internal */\n _closedPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _closedPromise_reject?: (reason: any) => void;\n /** @internal */\n _closedPromiseState!: 'pending' | 'resolved' | 'rejected';\n /** @internal */\n _readyPromise!: Promise;\n /** @internal */\n _readyPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _readyPromise_reject?: (reason: any) => void;\n /** @internal */\n _readyPromiseState!: 'pending' | 'fulfilled' | 'rejected';\n\n constructor(stream: WritableStream) {\n assertRequiredArgument(stream, 1, 'WritableStreamDefaultWriter');\n assertWritableStream(stream, 'First parameter');\n\n if (IsWritableStreamLocked(stream)) {\n throw new TypeError('This stream has already been locked for exclusive writing by another writer');\n }\n\n this._ownerWritableStream = stream;\n stream._writer = this;\n\n const state = stream._state;\n\n if (state === 'writable') {\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {\n defaultWriterReadyPromiseInitialize(this);\n } else {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n }\n\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'erroring') {\n defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);\n defaultWriterClosedPromiseInitialize(this);\n } else if (state === 'closed') {\n defaultWriterReadyPromiseInitializeAsResolved(this);\n defaultWriterClosedPromiseInitializeAsResolved(this);\n } else {\n assert(state === 'errored');\n\n const storedError = stream._storedError;\n defaultWriterReadyPromiseInitializeAsRejected(this, storedError);\n defaultWriterClosedPromiseInitializeAsRejected(this, storedError);\n }\n }\n\n /**\n * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or\n * the writer’s lock is released before the stream finishes closing.\n */\n get closed(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('closed'));\n }\n\n return this._closedPromise;\n }\n\n /**\n * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full.\n * A producer can use this information to determine the right amount of data to write.\n *\n * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort\n * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when\n * the writer’s lock is released.\n */\n get desiredSize(): number | null {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('desiredSize');\n }\n\n if (this._ownerWritableStream === undefined) {\n throw defaultWriterLockException('desiredSize');\n }\n\n return WritableStreamDefaultWriterGetDesiredSize(this);\n }\n\n /**\n * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions\n * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips\n * back to zero or below, the getter will return a new promise that stays pending until the next transition.\n *\n * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become\n * rejected.\n */\n get ready(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('ready'));\n }\n\n return this._readyPromise;\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}.\n */\n abort(reason: any = undefined): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('abort'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('abort'));\n }\n\n return WritableStreamDefaultWriterAbort(this, reason);\n }\n\n /**\n * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}.\n */\n close(): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('close'));\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('close'));\n }\n\n if (WritableStreamCloseQueuedOrInFlight(stream)) {\n return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));\n }\n\n return WritableStreamDefaultWriterClose(this);\n }\n\n /**\n * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active.\n * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from\n * now on; otherwise, the writer will appear closed.\n *\n * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the\n * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled).\n * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents\n * other producers from writing in an interleaved manner.\n */\n releaseLock(): void {\n if (!IsWritableStreamDefaultWriter(this)) {\n throw defaultWriterBrandCheckException('releaseLock');\n }\n\n const stream = this._ownerWritableStream;\n\n if (stream === undefined) {\n return;\n }\n\n assert(stream._writer !== undefined);\n\n WritableStreamDefaultWriterRelease(this);\n }\n\n /**\n * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully,\n * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return\n * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes\n * errored before the writing process is initiated.\n *\n * Note that what \"success\" means is up to the underlying sink; it might indicate simply that the chunk has been\n * accepted, and not necessarily that it is safely saved to its ultimate destination.\n */\n write(chunk: W): Promise;\n write(chunk: W = undefined!): Promise {\n if (!IsWritableStreamDefaultWriter(this)) {\n return promiseRejectedWith(defaultWriterBrandCheckException('write'));\n }\n\n if (this._ownerWritableStream === undefined) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n return WritableStreamDefaultWriterWrite(this, chunk);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultWriter.prototype, {\n abort: { enumerable: true },\n close: { enumerable: true },\n releaseLock: { enumerable: true },\n write: { enumerable: true },\n closed: { enumerable: true },\n desiredSize: { enumerable: true },\n ready: { enumerable: true }\n});\nsetFunctionName(WritableStreamDefaultWriter.prototype.abort, 'abort');\nsetFunctionName(WritableStreamDefaultWriter.prototype.close, 'close');\nsetFunctionName(WritableStreamDefaultWriter.prototype.releaseLock, 'releaseLock');\nsetFunctionName(WritableStreamDefaultWriter.prototype.write, 'write');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultWriter.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultWriter',\n configurable: true\n });\n}\n\n// Abstract operations for the WritableStreamDefaultWriter.\n\nfunction IsWritableStreamDefaultWriter(x: any): x is WritableStreamDefaultWriter {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultWriter;\n}\n\n// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter, reason: any) {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamAbort(stream, reason);\n}\n\nfunction WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n return WritableStreamClose(stream);\n}\n\nfunction WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const state = stream._state;\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable' || state === 'erroring');\n\n return WritableStreamDefaultWriterClose(writer);\n}\n\nfunction WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._closedPromiseState === 'pending') {\n defaultWriterClosedPromiseReject(writer, error);\n } else {\n defaultWriterClosedPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter, error: any) {\n if (writer._readyPromiseState === 'pending') {\n defaultWriterReadyPromiseReject(writer, error);\n } else {\n defaultWriterReadyPromiseResetToRejected(writer, error);\n }\n}\n\nfunction WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter): number | null {\n const stream = writer._ownerWritableStream;\n const state = stream._state;\n\n if (state === 'errored' || state === 'erroring') {\n return null;\n }\n\n if (state === 'closed') {\n return 0;\n }\n\n return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);\n}\n\nfunction WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter) {\n const stream = writer._ownerWritableStream;\n assert(stream !== undefined);\n assert(stream._writer === writer);\n\n const releasedError = new TypeError(\n `Writer was released and can no longer be used to monitor the stream's closedness`);\n\n WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);\n\n // The state transitions to \"errored\" before the sink abort() method runs, but the writer.closed promise is not\n // rejected until afterwards. This means that simply testing state will not work.\n WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);\n\n stream._writer = undefined;\n writer._ownerWritableStream = undefined!;\n}\n\nfunction WritableStreamDefaultWriterWrite(writer: WritableStreamDefaultWriter, chunk: W): Promise {\n const stream = writer._ownerWritableStream;\n\n assert(stream !== undefined);\n\n const controller = stream._writableStreamController;\n\n const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);\n\n if (stream !== writer._ownerWritableStream) {\n return promiseRejectedWith(defaultWriterLockException('write to'));\n }\n\n const state = stream._state;\n if (state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n if (WritableStreamCloseQueuedOrInFlight(stream) || state === 'closed') {\n return promiseRejectedWith(new TypeError('The stream is closing or closed and cannot be written to'));\n }\n if (state === 'erroring') {\n return promiseRejectedWith(stream._storedError);\n }\n\n assert(state === 'writable');\n\n const promise = WritableStreamAddWriteRequest(stream);\n\n WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);\n\n return promise;\n}\n\nconst closeSentinel: unique symbol = {} as any;\n\ntype QueueRecord = W | typeof closeSentinel;\n\n/**\n * Allows control of a {@link WritableStream | writable stream}'s state and internal queue.\n *\n * @public\n */\nexport class WritableStreamDefaultController {\n /** @internal */\n _controlledWritableStream!: WritableStream;\n /** @internal */\n _queue!: SimpleQueue>>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _abortReason: any;\n /** @internal */\n _abortController: AbortController | undefined;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _writeAlgorithm!: (chunk: W) => Promise;\n /** @internal */\n _closeAlgorithm!: () => Promise;\n /** @internal */\n _abortAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted.\n *\n * @deprecated\n * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177.\n * Use {@link WritableStreamDefaultController.signal}'s `reason` instead.\n */\n get abortReason(): any {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('abortReason');\n }\n return this._abortReason;\n }\n\n /**\n * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted.\n */\n get signal(): AbortSignal {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('signal');\n }\n if (this._abortController === undefined) {\n // Older browsers or older Node versions may not support `AbortController` or `AbortSignal`.\n // We don't want to bundle and ship an `AbortController` polyfill together with our polyfill,\n // so instead we only implement support for `signal` if we find a global `AbortController` constructor.\n throw new TypeError('WritableStreamDefaultController.prototype.signal is not supported');\n }\n return this._abortController.signal;\n }\n\n /**\n * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`.\n *\n * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying\n * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the\n * normal lifecycle of interactions with the underlying sink.\n */\n error(e: any = undefined): void {\n if (!IsWritableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n const state = this._controlledWritableStream._state;\n if (state !== 'writable') {\n // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so\n // just treat it as a no-op.\n return;\n }\n\n WritableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [AbortSteps](reason: any): Promise {\n const result = this._abortAlgorithm(reason);\n WritableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [ErrorSteps]() {\n ResetQueue(this);\n }\n}\n\nObject.defineProperties(WritableStreamDefaultController.prototype, {\n abortReason: { enumerable: true },\n signal: { enumerable: true },\n error: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(WritableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'WritableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations implementing interface required by the WritableStream.\n\nfunction IsWritableStreamDefaultController(x: any): x is WritableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {\n return false;\n }\n\n return x instanceof WritableStreamDefaultController;\n}\n\nfunction SetUpWritableStreamDefaultController(stream: WritableStream,\n controller: WritableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n writeAlgorithm: (chunk: W) => Promise,\n closeAlgorithm: () => Promise,\n abortAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(IsWritableStream(stream));\n assert(stream._writableStreamController === undefined);\n\n controller._controlledWritableStream = stream;\n stream._writableStreamController = controller;\n\n // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._abortReason = undefined;\n controller._abortController = createAbortController();\n controller._started = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._writeAlgorithm = writeAlgorithm;\n controller._closeAlgorithm = closeAlgorithm;\n controller._abortAlgorithm = abortAlgorithm;\n\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n\n const startResult = startAlgorithm();\n const startPromise = promiseResolvedWith(startResult);\n uponPromise(\n startPromise,\n () => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n r => {\n assert(stream._state === 'writable' || stream._state === 'erroring');\n controller._started = true;\n WritableStreamDealWithRejection(stream, r);\n return null;\n }\n );\n}\n\nfunction SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream: WritableStream,\n underlyingSink: ValidatedUnderlyingSink,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n const controller = Object.create(WritableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let writeAlgorithm: (chunk: W) => Promise;\n let closeAlgorithm: () => Promise;\n let abortAlgorithm: (reason: any) => Promise;\n\n if (underlyingSink.start !== undefined) {\n startAlgorithm = () => underlyingSink.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSink.write !== undefined) {\n writeAlgorithm = chunk => underlyingSink.write!(chunk, controller);\n } else {\n writeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.close !== undefined) {\n closeAlgorithm = () => underlyingSink.close!();\n } else {\n closeAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSink.abort !== undefined) {\n abortAlgorithm = reason => underlyingSink.abort!(reason);\n } else {\n abortAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpWritableStreamDefaultController(\n stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.\nfunction WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController) {\n controller._writeAlgorithm = undefined!;\n controller._closeAlgorithm = undefined!;\n controller._abortAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\nfunction WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController) {\n EnqueueValueWithSize(controller, closeSentinel, 0);\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\nfunction WritableStreamDefaultControllerGetChunkSize(controller: WritableStreamDefaultController,\n chunk: W): number {\n try {\n return controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);\n return 1;\n }\n}\n\nfunction WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController): number {\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\nfunction WritableStreamDefaultControllerWrite(controller: WritableStreamDefaultController,\n chunk: W,\n chunkSize: number) {\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);\n return;\n }\n\n const stream = controller._controlledWritableStream;\n if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n}\n\n// Abstract operations for the WritableStreamDefaultController.\n\nfunction WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n if (!controller._started) {\n return;\n }\n\n if (stream._inFlightWriteRequest !== undefined) {\n return;\n }\n\n const state = stream._state;\n assert(state !== 'closed' && state !== 'errored');\n if (state === 'erroring') {\n WritableStreamFinishErroring(stream);\n return;\n }\n\n if (controller._queue.length === 0) {\n return;\n }\n\n const value = PeekQueueValue(controller);\n if (value === closeSentinel) {\n WritableStreamDefaultControllerProcessClose(controller);\n } else {\n WritableStreamDefaultControllerProcessWrite(controller, value);\n }\n}\n\nfunction WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController, error: any) {\n if (controller._controlledWritableStream._state === 'writable') {\n WritableStreamDefaultControllerError(controller, error);\n }\n}\n\nfunction WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkCloseRequestInFlight(stream);\n\n DequeueValue(controller);\n assert(controller._queue.length === 0);\n\n const sinkClosePromise = controller._closeAlgorithm();\n WritableStreamDefaultControllerClearAlgorithms(controller);\n uponPromise(\n sinkClosePromise,\n () => {\n WritableStreamFinishInFlightClose(stream);\n return null;\n },\n reason => {\n WritableStreamFinishInFlightCloseWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerProcessWrite(controller: WritableStreamDefaultController, chunk: W) {\n const stream = controller._controlledWritableStream;\n\n WritableStreamMarkFirstWriteRequestInFlight(stream);\n\n const sinkWritePromise = controller._writeAlgorithm(chunk);\n uponPromise(\n sinkWritePromise,\n () => {\n WritableStreamFinishInFlightWrite(stream);\n\n const state = stream._state;\n assert(state === 'writable' || state === 'erroring');\n\n DequeueValue(controller);\n\n if (!WritableStreamCloseQueuedOrInFlight(stream) && state === 'writable') {\n const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);\n WritableStreamUpdateBackpressure(stream, backpressure);\n }\n\n WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);\n return null;\n },\n reason => {\n if (stream._state === 'writable') {\n WritableStreamDefaultControllerClearAlgorithms(controller);\n }\n WritableStreamFinishInFlightWriteWithError(stream, reason);\n return null;\n }\n );\n}\n\nfunction WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController): boolean {\n const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);\n return desiredSize <= 0;\n}\n\n// A client of WritableStreamDefaultController may use these functions directly to bypass state check.\n\nfunction WritableStreamDefaultControllerError(controller: WritableStreamDefaultController, error: any) {\n const stream = controller._controlledWritableStream;\n\n assert(stream._state === 'writable');\n\n WritableStreamDefaultControllerClearAlgorithms(controller);\n WritableStreamStartErroring(stream, error);\n}\n\n// Helper functions for the WritableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);\n}\n\n// Helper functions for the WritableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultController.prototype.${name} can only be used on a WritableStreamDefaultController`);\n}\n\n\n// Helper functions for the WritableStreamDefaultWriter.\n\nfunction defaultWriterBrandCheckException(name: string): TypeError {\n return new TypeError(\n `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);\n}\n\nfunction defaultWriterLockException(name: string): TypeError {\n return new TypeError('Cannot ' + name + ' a stream using a released writer');\n}\n\nfunction defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._closedPromise = newPromise((resolve, reject) => {\n writer._closedPromise_resolve = resolve;\n writer._closedPromise_reject = reject;\n writer._closedPromiseState = 'pending';\n });\n}\n\nfunction defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseReject(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterClosedPromiseInitialize(writer);\n defaultWriterClosedPromiseResolve(writer);\n}\n\nfunction defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._closedPromise_reject === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n setPromiseIsHandledToTrue(writer._closedPromise);\n writer._closedPromise_reject(reason);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'rejected';\n}\n\nfunction defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._closedPromise_resolve === undefined);\n assert(writer._closedPromise_reject === undefined);\n assert(writer._closedPromiseState !== 'pending');\n\n defaultWriterClosedPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._closedPromise_resolve === undefined) {\n return;\n }\n assert(writer._closedPromiseState === 'pending');\n\n writer._closedPromise_resolve(undefined);\n writer._closedPromise_resolve = undefined;\n writer._closedPromise_reject = undefined;\n writer._closedPromiseState = 'resolved';\n}\n\nfunction defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter) {\n writer._readyPromise = newPromise((resolve, reject) => {\n writer._readyPromise_resolve = resolve;\n writer._readyPromise_reject = reject;\n });\n writer._readyPromiseState = 'pending';\n}\n\nfunction defaultWriterReadyPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter, reason: any) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseReject(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter) {\n defaultWriterReadyPromiseInitialize(writer);\n defaultWriterReadyPromiseResolve(writer);\n}\n\nfunction defaultWriterReadyPromiseReject(writer: WritableStreamDefaultWriter, reason: any) {\n if (writer._readyPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(writer._readyPromise);\n writer._readyPromise_reject(reason);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'rejected';\n}\n\nfunction defaultWriterReadyPromiseReset(writer: WritableStreamDefaultWriter) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitialize(writer);\n}\n\nfunction defaultWriterReadyPromiseResetToRejected(writer: WritableStreamDefaultWriter, reason: any) {\n assert(writer._readyPromise_resolve === undefined);\n assert(writer._readyPromise_reject === undefined);\n\n defaultWriterReadyPromiseInitializeAsRejected(writer, reason);\n}\n\nfunction defaultWriterReadyPromiseResolve(writer: WritableStreamDefaultWriter) {\n if (writer._readyPromise_resolve === undefined) {\n return;\n }\n\n writer._readyPromise_resolve(undefined);\n writer._readyPromise_resolve = undefined;\n writer._readyPromise_reject = undefined;\n writer._readyPromiseState = 'fulfilled';\n}\n","/// \n\nfunction getGlobals(): typeof globalThis | undefined {\n if (typeof globalThis !== 'undefined') {\n return globalThis;\n } else if (typeof self !== 'undefined') {\n return self;\n } else if (typeof global !== 'undefined') {\n return global;\n }\n return undefined;\n}\n\nexport const globals = getGlobals();\n","/// \nimport { globals } from '../globals';\nimport { setFunctionName } from '../lib/helpers/miscellaneous';\n\ninterface DOMException extends Error {\n name: string;\n message: string;\n}\n\ntype DOMExceptionConstructor = new (message?: string, name?: string) => DOMException;\n\nfunction isDOMExceptionConstructor(ctor: unknown): ctor is DOMExceptionConstructor {\n if (!(typeof ctor === 'function' || typeof ctor === 'object')) {\n return false;\n }\n if ((ctor as DOMExceptionConstructor).name !== 'DOMException') {\n return false;\n }\n try {\n new (ctor as DOMExceptionConstructor)();\n return true;\n } catch {\n return false;\n }\n}\n\n/**\n * Support:\n * - Web browsers\n * - Node 18 and higher (https://github.com/nodejs/node/commit/e4b1fb5e6422c1ff151234bb9de792d45dd88d87)\n */\nfunction getFromGlobal(): DOMExceptionConstructor | undefined {\n const ctor = globals?.DOMException;\n return isDOMExceptionConstructor(ctor) ? ctor : undefined;\n}\n\n/**\n * Support:\n * - All platforms\n */\nfunction createPolyfill(): DOMExceptionConstructor {\n // eslint-disable-next-line @typescript-eslint/no-shadow\n const ctor = function DOMException(this: DOMException, message?: string, name?: string) {\n this.message = message || '';\n this.name = name || 'Error';\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n }\n } as any;\n setFunctionName(ctor, 'DOMException');\n ctor.prototype = Object.create(Error.prototype);\n Object.defineProperty(ctor.prototype, 'constructor', { value: ctor, writable: true, configurable: true });\n return ctor;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-redeclare\nconst DOMException: DOMExceptionConstructor = getFromGlobal() || createPolyfill();\n\nexport { DOMException };\n","import { IsReadableStream, IsReadableStreamLocked, ReadableStream, ReadableStreamCancel } from '../readable-stream';\nimport { AcquireReadableStreamDefaultReader, ReadableStreamDefaultReaderRead } from './default-reader';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireWritableStreamDefaultWriter,\n IsWritableStream,\n IsWritableStreamLocked,\n WritableStream,\n WritableStreamAbort,\n WritableStreamCloseQueuedOrInFlight,\n WritableStreamDefaultWriterCloseWithErrorPropagation,\n WritableStreamDefaultWriterRelease,\n WritableStreamDefaultWriterWrite\n} from '../writable-stream';\nimport assert from '../../stub/assert';\nimport {\n newPromise,\n PerformPromiseThen,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n uponFulfillment,\n uponPromise,\n uponRejection\n} from '../helpers/webidl';\nimport { noop } from '../../utils';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\nimport { DOMException } from '../../stub/dom-exception';\n\nexport function ReadableStreamPipeTo(source: ReadableStream,\n dest: WritableStream,\n preventClose: boolean,\n preventAbort: boolean,\n preventCancel: boolean,\n signal: AbortSignal | undefined): Promise {\n assert(IsReadableStream(source));\n assert(IsWritableStream(dest));\n assert(typeof preventClose === 'boolean');\n assert(typeof preventAbort === 'boolean');\n assert(typeof preventCancel === 'boolean');\n assert(signal === undefined || isAbortSignal(signal));\n assert(!IsReadableStreamLocked(source));\n assert(!IsWritableStreamLocked(dest));\n\n const reader = AcquireReadableStreamDefaultReader(source);\n const writer = AcquireWritableStreamDefaultWriter(dest);\n\n source._disturbed = true;\n\n let shuttingDown = false;\n\n // This is used to keep track of the spec's requirement that we wait for ongoing writes during shutdown.\n let currentWrite = promiseResolvedWith(undefined);\n\n return newPromise((resolve, reject) => {\n let abortAlgorithm: () => void;\n if (signal !== undefined) {\n abortAlgorithm = () => {\n const error = signal.reason !== undefined ? signal.reason : new DOMException('Aborted', 'AbortError');\n const actions: Array<() => Promise> = [];\n if (!preventAbort) {\n actions.push(() => {\n if (dest._state === 'writable') {\n return WritableStreamAbort(dest, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n if (!preventCancel) {\n actions.push(() => {\n if (source._state === 'readable') {\n return ReadableStreamCancel(source, error);\n }\n return promiseResolvedWith(undefined);\n });\n }\n shutdownWithAction(() => Promise.all(actions.map(action => action())), true, error);\n };\n\n if (signal.aborted) {\n abortAlgorithm();\n return;\n }\n\n signal.addEventListener('abort', abortAlgorithm);\n }\n\n // Using reader and writer, read all chunks from this and write them to dest\n // - Backpressure must be enforced\n // - Shutdown must stop all activity\n function pipeLoop() {\n return newPromise((resolveLoop, rejectLoop) => {\n function next(done: boolean) {\n if (done) {\n resolveLoop();\n } else {\n // Use `PerformPromiseThen` instead of `uponPromise` to avoid\n // adding unnecessary `.catch(rethrowAssertionErrorRejection)` handlers\n PerformPromiseThen(pipeStep(), next, rejectLoop);\n }\n }\n\n next(false);\n });\n }\n\n function pipeStep(): Promise {\n if (shuttingDown) {\n return promiseResolvedWith(true);\n }\n\n return PerformPromiseThen(writer._readyPromise, () => {\n return newPromise((resolveRead, rejectRead) => {\n ReadableStreamDefaultReaderRead(\n reader,\n {\n _chunkSteps: chunk => {\n currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);\n resolveRead(false);\n },\n _closeSteps: () => resolveRead(true),\n _errorSteps: rejectRead\n }\n );\n });\n });\n }\n\n // Errors must be propagated forward\n isOrBecomesErrored(source, reader._closedPromise, storedError => {\n if (!preventAbort) {\n shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Errors must be propagated backward\n isOrBecomesErrored(dest, writer._closedPromise, storedError => {\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, storedError), true, storedError);\n } else {\n shutdown(true, storedError);\n }\n return null;\n });\n\n // Closing must be propagated forward\n isOrBecomesClosed(source, reader._closedPromise, () => {\n if (!preventClose) {\n shutdownWithAction(() => WritableStreamDefaultWriterCloseWithErrorPropagation(writer));\n } else {\n shutdown();\n }\n return null;\n });\n\n // Closing must be propagated backward\n if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {\n const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');\n\n if (!preventCancel) {\n shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);\n } else {\n shutdown(true, destClosed);\n }\n }\n\n setPromiseIsHandledToTrue(pipeLoop());\n\n function waitForWritesToFinish(): Promise {\n // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait\n // for that too.\n const oldCurrentWrite = currentWrite;\n return PerformPromiseThen(\n currentWrite,\n () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined\n );\n }\n\n function isOrBecomesErrored(stream: ReadableStream | WritableStream,\n promise: Promise,\n action: (reason: any) => null) {\n if (stream._state === 'errored') {\n action(stream._storedError);\n } else {\n uponRejection(promise, action);\n }\n }\n\n function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise, action: () => null) {\n if (stream._state === 'closed') {\n action();\n } else {\n uponFulfillment(promise, action);\n }\n }\n\n function shutdownWithAction(action: () => Promise, originalIsError?: boolean, originalError?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), doTheRest);\n } else {\n doTheRest();\n }\n\n function doTheRest(): null {\n uponPromise(\n action(),\n () => finalize(originalIsError, originalError),\n newError => finalize(true, newError)\n );\n return null;\n }\n }\n\n function shutdown(isError?: boolean, error?: any) {\n if (shuttingDown) {\n return;\n }\n shuttingDown = true;\n\n if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {\n uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));\n } else {\n finalize(isError, error);\n }\n }\n\n function finalize(isError?: boolean, error?: any): null {\n WritableStreamDefaultWriterRelease(writer);\n ReadableStreamReaderGenericRelease(reader);\n\n if (signal !== undefined) {\n signal.removeEventListener('abort', abortAlgorithm);\n }\n if (isError) {\n reject(error);\n } else {\n resolve(undefined);\n }\n\n return null;\n }\n });\n}\n","import type { QueuingStrategySizeCallback } from '../queuing-strategy';\nimport assert from '../../stub/assert';\nimport { DequeueValue, EnqueueValueWithSize, type QueuePair, ResetQueue } from '../abstract-ops/queue-with-sizes';\nimport {\n ReadableStreamAddReadRequest,\n ReadableStreamFulfillReadRequest,\n ReadableStreamGetNumReadRequests,\n type ReadRequest\n} from './default-reader';\nimport { SimpleQueue } from '../simple-queue';\nimport { IsReadableStreamLocked, ReadableStream, ReadableStreamClose, ReadableStreamError } from '../readable-stream';\nimport type { ValidatedUnderlyingSource } from './underlying-source';\nimport { setFunctionName, typeIsObject } from '../helpers/miscellaneous';\nimport { CancelSteps, PullSteps, ReleaseSteps } from '../abstract-ops/internal-methods';\nimport { promiseResolvedWith, uponPromise } from '../helpers/webidl';\n\n/**\n * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue.\n *\n * @public\n */\nexport class ReadableStreamDefaultController {\n /** @internal */\n _controlledReadableStream!: ReadableStream;\n /** @internal */\n _queue!: SimpleQueue>;\n /** @internal */\n _queueTotalSize!: number;\n /** @internal */\n _started!: boolean;\n /** @internal */\n _closeRequested!: boolean;\n /** @internal */\n _pullAgain!: boolean;\n /** @internal */\n _pulling !: boolean;\n /** @internal */\n _strategySizeAlgorithm!: QueuingStrategySizeCallback;\n /** @internal */\n _strategyHWM!: number;\n /** @internal */\n _pullAlgorithm!: () => Promise;\n /** @internal */\n _cancelAlgorithm!: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is\n * over-full. An underlying source ought to use this information to determine when and how to apply backpressure.\n */\n get desiredSize(): number | null {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n return ReadableStreamDefaultControllerGetDesiredSize(this);\n }\n\n /**\n * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from\n * the stream, but once those are read, the stream will become closed.\n */\n close(): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('close');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits close');\n }\n\n ReadableStreamDefaultControllerClose(this);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the controlled readable stream.\n */\n enqueue(chunk: R): void;\n enqueue(chunk: R = undefined!): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(this)) {\n throw new TypeError('The stream is not in a state that permits enqueue');\n }\n\n return ReadableStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`.\n */\n error(e: any = undefined): void {\n if (!IsReadableStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n ReadableStreamDefaultControllerError(this, e);\n }\n\n /** @internal */\n [CancelSteps](reason: any): Promise {\n ResetQueue(this);\n const result = this._cancelAlgorithm(reason);\n ReadableStreamDefaultControllerClearAlgorithms(this);\n return result;\n }\n\n /** @internal */\n [PullSteps](readRequest: ReadRequest): void {\n const stream = this._controlledReadableStream;\n\n if (this._queue.length > 0) {\n const chunk = DequeueValue(this);\n\n if (this._closeRequested && this._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(this);\n ReadableStreamClose(stream);\n } else {\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n\n readRequest._chunkSteps(chunk);\n } else {\n ReadableStreamAddReadRequest(stream, readRequest);\n ReadableStreamDefaultControllerCallPullIfNeeded(this);\n }\n }\n\n /** @internal */\n [ReleaseSteps](): void {\n // Do nothing.\n }\n}\n\nObject.defineProperties(ReadableStreamDefaultController.prototype, {\n close: { enumerable: true },\n enqueue: { enumerable: true },\n error: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(ReadableStreamDefaultController.prototype.close, 'close');\nsetFunctionName(ReadableStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(ReadableStreamDefaultController.prototype.error, 'error');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'ReadableStreamDefaultController',\n configurable: true\n });\n}\n\n// Abstract operations for the ReadableStreamDefaultController.\n\nfunction IsReadableStreamDefaultController(x: any): x is ReadableStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledReadableStream')) {\n return false;\n }\n\n return x instanceof ReadableStreamDefaultController;\n}\n\nfunction ReadableStreamDefaultControllerCallPullIfNeeded(controller: ReadableStreamDefaultController): void {\n const shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);\n if (!shouldPull) {\n return;\n }\n\n if (controller._pulling) {\n controller._pullAgain = true;\n return;\n }\n\n assert(!controller._pullAgain);\n\n controller._pulling = true;\n\n const pullPromise = controller._pullAlgorithm();\n uponPromise(\n pullPromise,\n () => {\n controller._pulling = false;\n\n if (controller._pullAgain) {\n controller._pullAgain = false;\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n }\n\n return null;\n },\n e => {\n ReadableStreamDefaultControllerError(controller, e);\n return null;\n }\n );\n}\n\nfunction ReadableStreamDefaultControllerShouldCallPull(controller: ReadableStreamDefaultController): boolean {\n const stream = controller._controlledReadableStream;\n\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return false;\n }\n\n if (!controller._started) {\n return false;\n }\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n return true;\n }\n\n const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);\n assert(desiredSize !== null);\n if (desiredSize! > 0) {\n return true;\n }\n\n return false;\n}\n\nfunction ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController) {\n controller._pullAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n controller._strategySizeAlgorithm = undefined!;\n}\n\n// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.\n\nexport function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController) {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n controller._closeRequested = true;\n\n if (controller._queue.length === 0) {\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamClose(stream);\n }\n}\n\nexport function ReadableStreamDefaultControllerEnqueue(\n controller: ReadableStreamDefaultController,\n chunk: R\n): void {\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {\n return;\n }\n\n const stream = controller._controlledReadableStream;\n\n if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {\n ReadableStreamFulfillReadRequest(stream, chunk, false);\n } else {\n let chunkSize;\n try {\n chunkSize = controller._strategySizeAlgorithm(chunk);\n } catch (chunkSizeE) {\n ReadableStreamDefaultControllerError(controller, chunkSizeE);\n throw chunkSizeE;\n }\n\n try {\n EnqueueValueWithSize(controller, chunk, chunkSize);\n } catch (enqueueE) {\n ReadableStreamDefaultControllerError(controller, enqueueE);\n throw enqueueE;\n }\n }\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n}\n\nexport function ReadableStreamDefaultControllerError(controller: ReadableStreamDefaultController, e: any) {\n const stream = controller._controlledReadableStream;\n\n if (stream._state !== 'readable') {\n return;\n }\n\n ResetQueue(controller);\n\n ReadableStreamDefaultControllerClearAlgorithms(controller);\n ReadableStreamError(stream, e);\n}\n\nexport function ReadableStreamDefaultControllerGetDesiredSize(\n controller: ReadableStreamDefaultController\n): number | null {\n const state = controller._controlledReadableStream._state;\n\n if (state === 'errored') {\n return null;\n }\n if (state === 'closed') {\n return 0;\n }\n\n return controller._strategyHWM - controller._queueTotalSize;\n}\n\n// This is used in the implementation of TransformStream.\nexport function ReadableStreamDefaultControllerHasBackpressure(\n controller: ReadableStreamDefaultController\n): boolean {\n if (ReadableStreamDefaultControllerShouldCallPull(controller)) {\n return false;\n }\n\n return true;\n}\n\nexport function ReadableStreamDefaultControllerCanCloseOrEnqueue(\n controller: ReadableStreamDefaultController\n): boolean {\n const state = controller._controlledReadableStream._state;\n\n if (!controller._closeRequested && state === 'readable') {\n return true;\n }\n\n return false;\n}\n\nexport function SetUpReadableStreamDefaultController(stream: ReadableStream,\n controller: ReadableStreamDefaultController,\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback) {\n assert(stream._readableStreamController === undefined);\n\n controller._controlledReadableStream = stream;\n\n controller._queue = undefined!;\n controller._queueTotalSize = undefined!;\n ResetQueue(controller);\n\n controller._started = false;\n controller._closeRequested = false;\n controller._pullAgain = false;\n controller._pulling = false;\n\n controller._strategySizeAlgorithm = sizeAlgorithm;\n controller._strategyHWM = highWaterMark;\n\n controller._pullAlgorithm = pullAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n stream._readableStreamController = controller;\n\n const startResult = startAlgorithm();\n uponPromise(\n promiseResolvedWith(startResult),\n () => {\n controller._started = true;\n\n assert(!controller._pulling);\n assert(!controller._pullAgain);\n\n ReadableStreamDefaultControllerCallPullIfNeeded(controller);\n return null;\n },\n r => {\n ReadableStreamDefaultControllerError(controller, r);\n return null;\n }\n );\n}\n\nexport function SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n stream: ReadableStream,\n underlyingSource: ValidatedUnderlyingSource,\n highWaterMark: number,\n sizeAlgorithm: QueuingStrategySizeCallback\n) {\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n\n let startAlgorithm: () => void | PromiseLike;\n let pullAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (underlyingSource.start !== undefined) {\n startAlgorithm = () => underlyingSource.start!(controller);\n } else {\n startAlgorithm = () => undefined;\n }\n if (underlyingSource.pull !== undefined) {\n pullAlgorithm = () => underlyingSource.pull!(controller);\n } else {\n pullAlgorithm = () => promiseResolvedWith(undefined);\n }\n if (underlyingSource.cancel !== undefined) {\n cancelAlgorithm = reason => underlyingSource.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n}\n\n// Helper functions for the ReadableStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `ReadableStreamDefaultController.prototype.${name} can only be used on a ReadableStreamDefaultController`);\n}\n","import {\n CreateReadableByteStream,\n CreateReadableStream,\n type DefaultReadableStream,\n IsReadableStream,\n type ReadableByteStream,\n ReadableStream,\n ReadableStreamCancel,\n type ReadableStreamReader\n} from '../readable-stream';\nimport { ReadableStreamReaderGenericRelease } from './generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReaderRead,\n type ReadRequest\n} from './default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReaderRead,\n type ReadIntoRequest\n} from './byob-reader';\nimport assert from '../../stub/assert';\nimport { newPromise, promiseResolvedWith, queueMicrotask, uponRejection } from '../helpers/webidl';\nimport {\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError\n} from './default-controller';\nimport {\n IsReadableByteStreamController,\n ReadableByteStreamControllerClose,\n ReadableByteStreamControllerEnqueue,\n ReadableByteStreamControllerError,\n ReadableByteStreamControllerGetBYOBRequest,\n ReadableByteStreamControllerRespond,\n ReadableByteStreamControllerRespondWithNewView\n} from './byte-stream-controller';\nimport { CreateArrayFromList } from '../abstract-ops/ecmascript';\nimport { CloneAsUint8Array } from '../abstract-ops/miscellaneous';\nimport type { NonShared } from '../helpers/array-buffer-view';\n\nexport function ReadableStreamTee(stream: ReadableStream,\n cloneForBranch2: boolean): [ReadableStream, ReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n if (IsReadableByteStreamController(stream._readableStreamController)) {\n return ReadableByteStreamTee(stream as unknown as ReadableByteStream) as\n unknown as [ReadableStream, ReadableStream];\n }\n return ReadableStreamDefaultTee(stream, cloneForBranch2);\n}\n\nexport function ReadableStreamDefaultTee(\n stream: ReadableStream,\n cloneForBranch2: boolean\n): [DefaultReadableStream, DefaultReadableStream] {\n assert(IsReadableStream(stream));\n assert(typeof cloneForBranch2 === 'boolean');\n\n const reader = AcquireReadableStreamDefaultReader(stream);\n\n let reading = false;\n let readAgain = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: DefaultReadableStream;\n let branch2: DefaultReadableStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function pullAlgorithm(): Promise {\n if (reading) {\n readAgain = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const readRequest: ReadRequest = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgain = false;\n const chunk1 = chunk;\n const chunk2 = chunk;\n\n // There is no way to access the cloning code right now in the reference implementation.\n // If we add one then we'll need an implementation for serializable objects.\n // if (!canceled2 && cloneForBranch2) {\n // chunk2 = StructuredDeserialize(StructuredSerialize(chunk2));\n // }\n\n if (!canceled1) {\n ReadableStreamDefaultControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgain) {\n pullAlgorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableStreamDefaultControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableStreamDefaultControllerClose(branch2._readableStreamController);\n }\n\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm() {\n // do nothing\n }\n\n branch1 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel1Algorithm);\n branch2 = CreateReadableStream(startAlgorithm, pullAlgorithm, cancel2Algorithm);\n\n uponRejection(reader._closedPromise, (r: any) => {\n ReadableStreamDefaultControllerError(branch1._readableStreamController, r);\n ReadableStreamDefaultControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n\n return [branch1, branch2];\n}\n\nexport function ReadableByteStreamTee(stream: ReadableByteStream): [ReadableByteStream, ReadableByteStream] {\n assert(IsReadableStream(stream));\n assert(IsReadableByteStreamController(stream._readableStreamController));\n\n let reader: ReadableStreamReader> = AcquireReadableStreamDefaultReader(stream);\n let reading = false;\n let readAgainForBranch1 = false;\n let readAgainForBranch2 = false;\n let canceled1 = false;\n let canceled2 = false;\n let reason1: any;\n let reason2: any;\n let branch1: ReadableByteStream;\n let branch2: ReadableByteStream;\n\n let resolveCancelPromise: (value: undefined | Promise) => void;\n const cancelPromise = newPromise(resolve => {\n resolveCancelPromise = resolve;\n });\n\n function forwardReaderError(thisReader: ReadableStreamReader>) {\n uponRejection(thisReader._closedPromise, r => {\n if (thisReader !== reader) {\n return null;\n }\n ReadableByteStreamControllerError(branch1._readableStreamController, r);\n ReadableByteStreamControllerError(branch2._readableStreamController, r);\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n return null;\n });\n }\n\n function pullWithDefaultReader() {\n if (IsReadableStreamBYOBReader(reader)) {\n assert(reader._readIntoRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamDefaultReader(stream);\n forwardReaderError(reader);\n }\n\n const readRequest: ReadRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const chunk1 = chunk;\n let chunk2 = chunk;\n if (!canceled1 && !canceled2) {\n try {\n chunk2 = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(branch1._readableStreamController, cloneE);\n ReadableByteStreamControllerError(branch2._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n }\n\n if (!canceled1) {\n ReadableByteStreamControllerEnqueue(branch1._readableStreamController, chunk1);\n }\n if (!canceled2) {\n ReadableByteStreamControllerEnqueue(branch2._readableStreamController, chunk2);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: () => {\n reading = false;\n if (!canceled1) {\n ReadableByteStreamControllerClose(branch1._readableStreamController);\n }\n if (!canceled2) {\n ReadableByteStreamControllerClose(branch2._readableStreamController);\n }\n if (branch1._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch1._readableStreamController, 0);\n }\n if (branch2._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(branch2._readableStreamController, 0);\n }\n if (!canceled1 || !canceled2) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamDefaultReaderRead(reader, readRequest);\n }\n\n function pullWithBYOBReader(view: NonShared, forBranch2: boolean) {\n if (IsReadableStreamDefaultReader>(reader)) {\n assert(reader._readRequests.length === 0);\n ReadableStreamReaderGenericRelease(reader);\n\n reader = AcquireReadableStreamBYOBReader(stream);\n forwardReaderError(reader);\n }\n\n const byobBranch = forBranch2 ? branch2 : branch1;\n const otherBranch = forBranch2 ? branch1 : branch2;\n\n const readIntoRequest: ReadIntoRequest> = {\n _chunkSteps: chunk => {\n // This needs to be delayed a microtask because it takes at least a microtask to detect errors (using\n // reader._closedPromise below), and we want errors in stream to error both branches immediately. We cannot let\n // successful synchronously-available reads get ahead of asynchronously-available errors.\n queueMicrotask(() => {\n readAgainForBranch1 = false;\n readAgainForBranch2 = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!otherCanceled) {\n let clonedChunk;\n try {\n clonedChunk = CloneAsUint8Array(chunk);\n } catch (cloneE) {\n ReadableByteStreamControllerError(byobBranch._readableStreamController, cloneE);\n ReadableByteStreamControllerError(otherBranch._readableStreamController, cloneE);\n resolveCancelPromise(ReadableStreamCancel(stream, cloneE));\n return;\n }\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n ReadableByteStreamControllerEnqueue(otherBranch._readableStreamController, clonedChunk);\n } else if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n\n reading = false;\n if (readAgainForBranch1) {\n pull1Algorithm();\n } else if (readAgainForBranch2) {\n pull2Algorithm();\n }\n });\n },\n _closeSteps: chunk => {\n reading = false;\n\n const byobCanceled = forBranch2 ? canceled2 : canceled1;\n const otherCanceled = forBranch2 ? canceled1 : canceled2;\n\n if (!byobCanceled) {\n ReadableByteStreamControllerClose(byobBranch._readableStreamController);\n }\n if (!otherCanceled) {\n ReadableByteStreamControllerClose(otherBranch._readableStreamController);\n }\n\n if (chunk !== undefined) {\n assert(chunk.byteLength === 0);\n\n if (!byobCanceled) {\n ReadableByteStreamControllerRespondWithNewView(byobBranch._readableStreamController, chunk);\n }\n if (!otherCanceled && otherBranch._readableStreamController._pendingPullIntos.length > 0) {\n ReadableByteStreamControllerRespond(otherBranch._readableStreamController, 0);\n }\n }\n\n if (!byobCanceled || !otherCanceled) {\n resolveCancelPromise(undefined);\n }\n },\n _errorSteps: () => {\n reading = false;\n }\n };\n ReadableStreamBYOBReaderRead(reader, view, 1, readIntoRequest);\n }\n\n function pull1Algorithm(): Promise {\n if (reading) {\n readAgainForBranch1 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch1._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, false);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function pull2Algorithm(): Promise {\n if (reading) {\n readAgainForBranch2 = true;\n return promiseResolvedWith(undefined);\n }\n\n reading = true;\n\n const byobRequest = ReadableByteStreamControllerGetBYOBRequest(branch2._readableStreamController);\n if (byobRequest === null) {\n pullWithDefaultReader();\n } else {\n pullWithBYOBReader(byobRequest._view!, true);\n }\n\n return promiseResolvedWith(undefined);\n }\n\n function cancel1Algorithm(reason: any): Promise {\n canceled1 = true;\n reason1 = reason;\n if (canceled2) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function cancel2Algorithm(reason: any): Promise {\n canceled2 = true;\n reason2 = reason;\n if (canceled1) {\n const compositeReason = CreateArrayFromList([reason1, reason2]);\n const cancelResult = ReadableStreamCancel(stream, compositeReason);\n resolveCancelPromise(cancelResult);\n }\n return cancelPromise;\n }\n\n function startAlgorithm(): void {\n return;\n }\n\n branch1 = CreateReadableByteStream(startAlgorithm, pull1Algorithm, cancel1Algorithm);\n branch2 = CreateReadableByteStream(startAlgorithm, pull2Algorithm, cancel2Algorithm);\n\n forwardReaderError(reader);\n\n return [branch1, branch2];\n}\n","import { typeIsObject } from '../helpers/miscellaneous';\nimport type { ReadableStreamDefaultReadResult } from './default-reader';\n\n/**\n * A common interface for a `ReadadableStream` implementation.\n *\n * @public\n */\nexport interface ReadableStreamLike {\n readonly locked: boolean;\n\n getReader(): ReadableStreamDefaultReaderLike;\n}\n\n/**\n * A common interface for a `ReadableStreamDefaultReader` implementation.\n *\n * @public\n */\nexport interface ReadableStreamDefaultReaderLike {\n readonly closed: Promise;\n\n cancel(reason?: any): Promise;\n\n read(): Promise>;\n\n releaseLock(): void;\n}\n\nexport function isReadableStreamLike(stream: unknown): stream is ReadableStreamLike {\n return typeIsObject(stream) && typeof (stream as ReadableStreamLike).getReader !== 'undefined';\n}\n","import { CreateReadableStream, type DefaultReadableStream } from '../readable-stream';\nimport {\n isReadableStreamLike,\n type ReadableStreamDefaultReaderLike,\n type ReadableStreamLike\n} from './readable-stream-like';\nimport { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';\nimport { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';\nimport { promiseRejectedWith, promiseResolvedWith, reflectCall, transformPromiseWith } from '../helpers/webidl';\nimport { typeIsObject } from '../helpers/miscellaneous';\nimport { noop } from '../../utils';\n\nexport function ReadableStreamFrom(\n source: Iterable | AsyncIterable | ReadableStreamLike\n): DefaultReadableStream {\n if (isReadableStreamLike(source)) {\n return ReadableStreamFromDefaultReader(source.getReader());\n }\n return ReadableStreamFromIterable(source);\n}\n\nexport function ReadableStreamFromIterable(asyncIterable: Iterable | AsyncIterable): DefaultReadableStream {\n let stream: DefaultReadableStream;\n const iteratorRecord = GetIterator(asyncIterable, 'async');\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let nextResult;\n try {\n nextResult = IteratorNext(iteratorRecord);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const nextPromise = promiseResolvedWith(nextResult);\n return transformPromiseWith(nextPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');\n }\n const done = IteratorComplete(iterResult);\n if (done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = IteratorValue(iterResult);\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n const iterator = iteratorRecord.iterator;\n let returnMethod: (typeof iterator)['return'] | undefined;\n try {\n returnMethod = GetMethod(iterator, 'return');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n if (returnMethod === undefined) {\n return promiseResolvedWith(undefined);\n }\n let returnResult: IteratorResult | Promise>;\n try {\n returnResult = reflectCall(returnMethod, iterator, [reason]);\n } catch (e) {\n return promiseRejectedWith(e);\n }\n const returnPromise = promiseResolvedWith(returnResult);\n return transformPromiseWith(returnPromise, iterResult => {\n if (!typeIsObject(iterResult)) {\n throw new TypeError('The promise returned by the iterator.return() method must fulfill with an object');\n }\n return undefined;\n });\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n\nexport function ReadableStreamFromDefaultReader(\n reader: ReadableStreamDefaultReaderLike\n): DefaultReadableStream {\n let stream: DefaultReadableStream;\n\n const startAlgorithm = noop;\n\n function pullAlgorithm(): Promise {\n let readPromise;\n try {\n readPromise = reader.read();\n } catch (e) {\n return promiseRejectedWith(e);\n }\n return transformPromiseWith(readPromise, readResult => {\n if (!typeIsObject(readResult)) {\n throw new TypeError('The promise returned by the reader.read() method must fulfill with an object');\n }\n if (readResult.done) {\n ReadableStreamDefaultControllerClose(stream._readableStreamController);\n } else {\n const value = readResult.value;\n ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);\n }\n });\n }\n\n function cancelAlgorithm(reason: any): Promise {\n try {\n return promiseResolvedWith(reader.cancel(reason));\n } catch (e) {\n return promiseRejectedWith(e);\n }\n }\n\n stream = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, 0);\n return stream;\n}\n","import { assertDictionary, assertFunction, convertUnsignedLongLongWithEnforceRange } from './basic';\nimport type {\n ReadableStreamController,\n UnderlyingByteSource,\n UnderlyingDefaultOrByteSource,\n UnderlyingDefaultOrByteSourcePullCallback,\n UnderlyingDefaultOrByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n ValidatedUnderlyingDefaultOrByteSource\n} from '../readable-stream/underlying-source';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\n\nexport function convertUnderlyingDefaultOrByteSource(\n source: UnderlyingSource | UnderlyingByteSource | null,\n context: string\n): ValidatedUnderlyingDefaultOrByteSource {\n assertDictionary(source, context);\n const original = source as (UnderlyingDefaultOrByteSource | null);\n const autoAllocateChunkSize = original?.autoAllocateChunkSize;\n const cancel = original?.cancel;\n const pull = original?.pull;\n const start = original?.start;\n const type = original?.type;\n return {\n autoAllocateChunkSize: autoAllocateChunkSize === undefined ?\n undefined :\n convertUnsignedLongLongWithEnforceRange(\n autoAllocateChunkSize,\n `${context} has member 'autoAllocateChunkSize' that`\n ),\n cancel: cancel === undefined ?\n undefined :\n convertUnderlyingSourceCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n pull: pull === undefined ?\n undefined :\n convertUnderlyingSourcePullCallback(pull, original!, `${context} has member 'pull' that`),\n start: start === undefined ?\n undefined :\n convertUnderlyingSourceStartCallback(start, original!, `${context} has member 'start' that`),\n type: type === undefined ? undefined : convertReadableStreamType(type, `${context} has member 'type' that`)\n };\n}\n\nfunction convertUnderlyingSourceCancelCallback(\n fn: UnderlyingSourceCancelCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n\nfunction convertUnderlyingSourcePullCallback(\n fn: UnderlyingDefaultOrByteSourcePullCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): (controller: ReadableStreamController) => Promise {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertUnderlyingSourceStartCallback(\n fn: UnderlyingDefaultOrByteSourceStartCallback,\n original: UnderlyingDefaultOrByteSource,\n context: string\n): UnderlyingDefaultOrByteSourceStartCallback {\n assertFunction(fn, context);\n return (controller: ReadableStreamController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertReadableStreamType(type: string, context: string): 'bytes' {\n type = `${type}`;\n if (type !== 'bytes') {\n throw new TypeError(`${context} '${type}' is not a valid enumeration value for ReadableStreamType`);\n }\n return type;\n}\n","import { assertDictionary } from './basic';\nimport type {\n ReadableStreamIteratorOptions,\n ValidatedReadableStreamIteratorOptions\n} from '../readable-stream/iterator-options';\n\nexport function convertIteratorOptions(options: ReadableStreamIteratorOptions | null | undefined,\n context: string): ValidatedReadableStreamIteratorOptions {\n assertDictionary(options, context);\n const preventCancel = options?.preventCancel;\n return { preventCancel: Boolean(preventCancel) };\n}\n","import { assertDictionary } from './basic';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from '../readable-stream/pipe-options';\nimport { type AbortSignal, isAbortSignal } from '../abort-signal';\n\nexport function convertPipeOptions(options: StreamPipeOptions | null | undefined,\n context: string): ValidatedStreamPipeOptions {\n assertDictionary(options, context);\n const preventAbort = options?.preventAbort;\n const preventCancel = options?.preventCancel;\n const preventClose = options?.preventClose;\n const signal = options?.signal;\n if (signal !== undefined) {\n assertAbortSignal(signal, `${context} has member 'signal' that`);\n }\n return {\n preventAbort: Boolean(preventAbort),\n preventCancel: Boolean(preventCancel),\n preventClose: Boolean(preventClose),\n signal\n };\n}\n\nfunction assertAbortSignal(signal: unknown, context: string): asserts signal is AbortSignal {\n if (!isAbortSignal(signal)) {\n throw new TypeError(`${context} is not an AbortSignal.`);\n }\n}\n","import { assertDictionary, assertRequiredField } from './basic';\nimport { ReadableStream } from '../readable-stream';\nimport { WritableStream } from '../writable-stream';\nimport { assertReadableStream } from './readable-stream';\nimport { assertWritableStream } from './writable-stream';\n\nexport function convertReadableWritablePair(\n pair: { readable: RS; writable: WS } | null | undefined,\n context: string\n): { readable: RS; writable: WS } {\n assertDictionary(pair, context);\n\n const readable = pair?.readable;\n assertRequiredField(readable, 'readable', 'ReadableWritablePair');\n assertReadableStream(readable, `${context} has member 'readable' that`);\n\n const writable = pair?.writable;\n assertRequiredField(writable, 'writable', 'ReadableWritablePair');\n assertWritableStream(writable, `${context} has member 'writable' that`);\n\n return { readable, writable };\n}\n","import assert from '../stub/assert';\nimport {\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith\n} from './helpers/webidl';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { AcquireReadableStreamAsyncIterator, type ReadableStreamAsyncIterator } from './readable-stream/async-iterator';\nimport { defaultReaderClosedPromiseReject, defaultReaderClosedPromiseResolve } from './readable-stream/generic-reader';\nimport {\n AcquireReadableStreamDefaultReader,\n IsReadableStreamDefaultReader,\n ReadableStreamDefaultReader,\n ReadableStreamDefaultReaderErrorReadRequests,\n type ReadableStreamDefaultReadResult\n} from './readable-stream/default-reader';\nimport {\n AcquireReadableStreamBYOBReader,\n IsReadableStreamBYOBReader,\n ReadableStreamBYOBReader,\n ReadableStreamBYOBReaderErrorReadIntoRequests,\n type ReadableStreamBYOBReadResult\n} from './readable-stream/byob-reader';\nimport { ReadableStreamPipeTo } from './readable-stream/pipe';\nimport { ReadableStreamTee } from './readable-stream/tee';\nimport { ReadableStreamFrom } from './readable-stream/from';\nimport { IsWritableStream, IsWritableStreamLocked, WritableStream } from './writable-stream';\nimport { SimpleQueue } from './simple-queue';\nimport {\n ReadableByteStreamController,\n ReadableStreamBYOBRequest,\n SetUpReadableByteStreamController,\n SetUpReadableByteStreamControllerFromUnderlyingSource\n} from './readable-stream/byte-stream-controller';\nimport {\n ReadableStreamDefaultController,\n SetUpReadableStreamDefaultController,\n SetUpReadableStreamDefaultControllerFromUnderlyingSource\n} from './readable-stream/default-controller';\nimport type {\n UnderlyingByteSource,\n UnderlyingByteSourcePullCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingSource,\n UnderlyingSourceCancelCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceStartCallback\n} from './readable-stream/underlying-source';\nimport { noop } from '../utils';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { CreateArrayFromList, SymbolAsyncIterator } from './abstract-ops/ecmascript';\nimport { CancelSteps } from './abstract-ops/internal-methods';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { assertObject, assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport { convertUnderlyingDefaultOrByteSource } from './validators/underlying-source';\nimport type {\n ReadableStreamBYOBReaderReadOptions,\n ReadableStreamGetReaderOptions\n} from './readable-stream/reader-options';\nimport { convertReaderOptions } from './validators/reader-options';\nimport type { StreamPipeOptions, ValidatedStreamPipeOptions } from './readable-stream/pipe-options';\nimport type { ReadableStreamIteratorOptions } from './readable-stream/iterator-options';\nimport { convertIteratorOptions } from './validators/iterator-options';\nimport { convertPipeOptions } from './validators/pipe-options';\nimport type { ReadableWritablePair } from './readable-stream/readable-writable-pair';\nimport { convertReadableWritablePair } from './validators/readable-writable-pair';\nimport type { ReadableStreamDefaultReaderLike, ReadableStreamLike } from './readable-stream/readable-stream-like';\nimport type { NonShared } from './helpers/array-buffer-view';\n\nexport type DefaultReadableStream = ReadableStream & {\n _readableStreamController: ReadableStreamDefaultController\n};\n\nexport type ReadableByteStream = ReadableStream> & {\n _readableStreamController: ReadableByteStreamController\n};\n\ntype ReadableStreamState = 'readable' | 'closed' | 'errored';\n\n/**\n * A readable stream represents a source of data, from which you can read.\n *\n * @public\n */\nexport class ReadableStream implements AsyncIterable {\n /** @internal */\n _state!: ReadableStreamState;\n /** @internal */\n _reader: ReadableStreamReader | undefined;\n /** @internal */\n _storedError: any;\n /** @internal */\n _disturbed!: boolean;\n /** @internal */\n _readableStreamController!: ReadableStreamDefaultController | ReadableByteStreamController;\n\n constructor(underlyingSource: UnderlyingByteSource, strategy?: { highWaterMark?: number; size?: undefined });\n constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy);\n constructor(rawUnderlyingSource: UnderlyingSource | UnderlyingByteSource | null | undefined = {},\n rawStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawUnderlyingSource === undefined) {\n rawUnderlyingSource = null;\n } else {\n assertObject(rawUnderlyingSource, 'First parameter');\n }\n\n const strategy = convertQueuingStrategy(rawStrategy, 'Second parameter');\n const underlyingSource = convertUnderlyingDefaultOrByteSource(rawUnderlyingSource, 'First parameter');\n\n InitializeReadableStream(this);\n\n if (underlyingSource.type === 'bytes') {\n if (strategy.size !== undefined) {\n throw new RangeError('The strategy for a byte stream cannot have a size function');\n }\n const highWaterMark = ExtractHighWaterMark(strategy, 0);\n SetUpReadableByteStreamControllerFromUnderlyingSource(\n this as unknown as ReadableByteStream,\n underlyingSource,\n highWaterMark\n );\n } else {\n assert(underlyingSource.type === undefined);\n const sizeAlgorithm = ExtractSizeAlgorithm(strategy);\n const highWaterMark = ExtractHighWaterMark(strategy, 1);\n SetUpReadableStreamDefaultControllerFromUnderlyingSource(\n this,\n underlyingSource,\n highWaterMark,\n sizeAlgorithm\n );\n }\n }\n\n /**\n * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}.\n */\n get locked(): boolean {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('locked');\n }\n\n return IsReadableStreamLocked(this);\n }\n\n /**\n * Cancels the stream, signaling a loss of interest in the stream by a consumer.\n *\n * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()}\n * method, which might or might not use it.\n */\n cancel(reason: any = undefined): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('cancel'));\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(new TypeError('Cannot cancel a stream that already has a reader'));\n }\n\n return ReadableStreamCancel(this, reason);\n }\n\n /**\n * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader.\n *\n * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams,\n * i.e. streams which were constructed specifically with the ability to handle \"bring your own buffer\" reading.\n * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its\n * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise\n * control over allocation.\n */\n getReader({ mode }: { mode: 'byob' }): ReadableStreamBYOBReader;\n /**\n * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader.\n * While the stream is locked, no other reader can be acquired until this one is released.\n *\n * This functionality is especially useful for creating abstractions that desire the ability to consume a stream\n * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours\n * or cancel the stream, which would interfere with your abstraction.\n */\n getReader(): ReadableStreamDefaultReader;\n getReader(\n rawOptions: ReadableStreamGetReaderOptions | null | undefined = undefined\n ): ReadableStreamDefaultReader | ReadableStreamBYOBReader {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('getReader');\n }\n\n const options = convertReaderOptions(rawOptions, 'First parameter');\n\n if (options.mode === undefined) {\n return AcquireReadableStreamDefaultReader(this);\n }\n\n assert(options.mode === 'byob');\n return AcquireReadableStreamBYOBReader(this as unknown as ReadableByteStream);\n }\n\n /**\n * Provides a convenient, chainable way of piping this readable stream through a transform stream\n * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream\n * into the writable side of the supplied pair, and returns the readable side for further use.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeThrough(\n transform: { readable: RS; writable: WritableStream },\n options?: StreamPipeOptions\n ): RS;\n pipeThrough(\n rawTransform: { readable: RS; writable: WritableStream } | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}\n ): RS {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('pipeThrough');\n }\n assertRequiredArgument(rawTransform, 1, 'pipeThrough');\n\n const transform = convertReadableWritablePair(rawTransform, 'First parameter');\n const options = convertPipeOptions(rawOptions, 'Second parameter');\n\n if (IsReadableStreamLocked(this)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked ReadableStream');\n }\n if (IsWritableStreamLocked(transform.writable)) {\n throw new TypeError('ReadableStream.prototype.pipeThrough cannot be used on a locked WritableStream');\n }\n\n const promise = ReadableStreamPipeTo(\n this, transform.writable, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n\n setPromiseIsHandledToTrue(promise);\n\n return transform.readable;\n }\n\n /**\n * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under\n * various error conditions can be customized with a number of passed options. It returns a promise that fulfills\n * when the piping process completes successfully, or rejects if any errors were encountered.\n *\n * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader.\n */\n pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise;\n pipeTo(destination: WritableStream | null | undefined,\n rawOptions: StreamPipeOptions | null | undefined = {}): Promise {\n if (!IsReadableStream(this)) {\n return promiseRejectedWith(streamBrandCheckException('pipeTo'));\n }\n\n if (destination === undefined) {\n return promiseRejectedWith(`Parameter 1 is required in 'pipeTo'.`);\n }\n if (!IsWritableStream(destination)) {\n return promiseRejectedWith(\n new TypeError(`ReadableStream.prototype.pipeTo's first argument must be a WritableStream`)\n );\n }\n\n let options: ValidatedStreamPipeOptions;\n try {\n options = convertPipeOptions(rawOptions, 'Second parameter');\n } catch (e) {\n return promiseRejectedWith(e);\n }\n\n if (IsReadableStreamLocked(this)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream')\n );\n }\n if (IsWritableStreamLocked(destination)) {\n return promiseRejectedWith(\n new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream')\n );\n }\n\n return ReadableStreamPipeTo(\n this, destination, options.preventClose, options.preventAbort, options.preventCancel, options.signal\n );\n }\n\n /**\n * Tees this readable stream, returning a two-element array containing the two resulting branches as\n * new {@link ReadableStream} instances.\n *\n * Teeing a stream will lock it, preventing any other consumer from acquiring a reader.\n * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be\n * propagated to the stream's underlying source.\n *\n * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable,\n * this could allow interference between the two branches.\n */\n tee(): [ReadableStream, ReadableStream] {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('tee');\n }\n\n const branches = ReadableStreamTee(this, false);\n return CreateArrayFromList(branches);\n }\n\n /**\n * Asynchronously iterates over the chunks in the stream's internal queue.\n *\n * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader.\n * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method\n * is called, e.g. by breaking out of the loop.\n *\n * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also\n * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing\n * `true` for the `preventCancel` option.\n */\n values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n values(rawOptions: ReadableStreamIteratorOptions | null | undefined = undefined): ReadableStreamAsyncIterator {\n if (!IsReadableStream(this)) {\n throw streamBrandCheckException('values');\n }\n\n const options = convertIteratorOptions(rawOptions, 'First parameter');\n return AcquireReadableStreamAsyncIterator(this, options.preventCancel);\n }\n\n /**\n * {@inheritDoc ReadableStream.values}\n */\n [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator;\n\n [SymbolAsyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator {\n // Stub implementation, overridden below\n return this.values(options);\n }\n\n /**\n * Creates a new ReadableStream wrapping the provided iterable or async iterable.\n *\n * This can be used to adapt various kinds of objects into a readable stream,\n * such as an array, an async generator, or a Node.js readable stream.\n */\n static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream {\n return ReadableStreamFrom(asyncIterable);\n }\n}\n\nObject.defineProperties(ReadableStream, {\n from: { enumerable: true }\n});\nObject.defineProperties(ReadableStream.prototype, {\n cancel: { enumerable: true },\n getReader: { enumerable: true },\n pipeThrough: { enumerable: true },\n pipeTo: { enumerable: true },\n tee: { enumerable: true },\n values: { enumerable: true },\n locked: { enumerable: true }\n});\nsetFunctionName(ReadableStream.from, 'from');\nsetFunctionName(ReadableStream.prototype.cancel, 'cancel');\nsetFunctionName(ReadableStream.prototype.getReader, 'getReader');\nsetFunctionName(ReadableStream.prototype.pipeThrough, 'pipeThrough');\nsetFunctionName(ReadableStream.prototype.pipeTo, 'pipeTo');\nsetFunctionName(ReadableStream.prototype.tee, 'tee');\nsetFunctionName(ReadableStream.prototype.values, 'values');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ReadableStream.prototype, Symbol.toStringTag, {\n value: 'ReadableStream',\n configurable: true\n });\n}\nObject.defineProperty(ReadableStream.prototype, SymbolAsyncIterator, {\n value: ReadableStream.prototype.values,\n writable: true,\n configurable: true\n});\n\nexport type {\n ReadableStreamAsyncIterator,\n ReadableStreamDefaultReadResult,\n ReadableStreamBYOBReadResult,\n ReadableStreamBYOBReaderReadOptions,\n UnderlyingByteSource,\n UnderlyingSource,\n UnderlyingSourceStartCallback,\n UnderlyingSourcePullCallback,\n UnderlyingSourceCancelCallback,\n UnderlyingByteSourceStartCallback,\n UnderlyingByteSourcePullCallback,\n StreamPipeOptions,\n ReadableWritablePair,\n ReadableStreamIteratorOptions,\n ReadableStreamLike,\n ReadableStreamDefaultReaderLike\n};\n\n// Abstract operations for the ReadableStream.\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n highWaterMark = 1,\n sizeAlgorithm: QueuingStrategySizeCallback = () => 1\n): DefaultReadableStream {\n assert(IsNonNegativeNumber(highWaterMark));\n\n const stream: DefaultReadableStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableStreamDefaultController = Object.create(ReadableStreamDefaultController.prototype);\n SetUpReadableStreamDefaultController(\n stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, highWaterMark, sizeAlgorithm\n );\n\n return stream;\n}\n\n// Throws if and only if startAlgorithm throws.\nexport function CreateReadableByteStream(\n startAlgorithm: () => void | PromiseLike,\n pullAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise\n): ReadableByteStream {\n const stream: ReadableByteStream = Object.create(ReadableStream.prototype);\n InitializeReadableStream(stream);\n\n const controller: ReadableByteStreamController = Object.create(ReadableByteStreamController.prototype);\n SetUpReadableByteStreamController(stream, controller, startAlgorithm, pullAlgorithm, cancelAlgorithm, 0, undefined);\n\n return stream;\n}\n\nfunction InitializeReadableStream(stream: ReadableStream) {\n stream._state = 'readable';\n stream._reader = undefined;\n stream._storedError = undefined;\n stream._disturbed = false;\n}\n\nexport function IsReadableStream(x: unknown): x is ReadableStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {\n return false;\n }\n\n return x instanceof ReadableStream;\n}\n\nexport function IsReadableStreamDisturbed(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n return stream._disturbed;\n}\n\nexport function IsReadableStreamLocked(stream: ReadableStream): boolean {\n assert(IsReadableStream(stream));\n\n if (stream._reader === undefined) {\n return false;\n }\n\n return true;\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamCancel(stream: ReadableStream, reason: any): Promise {\n stream._disturbed = true;\n\n if (stream._state === 'closed') {\n return promiseResolvedWith(undefined);\n }\n if (stream._state === 'errored') {\n return promiseRejectedWith(stream._storedError);\n }\n\n ReadableStreamClose(stream);\n\n const reader = stream._reader;\n if (reader !== undefined && IsReadableStreamBYOBReader(reader)) {\n const readIntoRequests = reader._readIntoRequests;\n reader._readIntoRequests = new SimpleQueue();\n readIntoRequests.forEach(readIntoRequest => {\n readIntoRequest._closeSteps(undefined);\n });\n }\n\n const sourceCancelPromise = stream._readableStreamController[CancelSteps](reason);\n return transformPromiseWith(sourceCancelPromise, noop);\n}\n\nexport function ReadableStreamClose(stream: ReadableStream): void {\n assert(stream._state === 'readable');\n\n stream._state = 'closed';\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseResolve(reader);\n\n if (IsReadableStreamDefaultReader(reader)) {\n const readRequests = reader._readRequests;\n reader._readRequests = new SimpleQueue();\n readRequests.forEach(readRequest => {\n readRequest._closeSteps();\n });\n }\n}\n\nexport function ReadableStreamError(stream: ReadableStream, e: any): void {\n assert(IsReadableStream(stream));\n assert(stream._state === 'readable');\n\n stream._state = 'errored';\n stream._storedError = e;\n\n const reader = stream._reader;\n\n if (reader === undefined) {\n return;\n }\n\n defaultReaderClosedPromiseReject(reader, e);\n\n if (IsReadableStreamDefaultReader(reader)) {\n ReadableStreamDefaultReaderErrorReadRequests(reader, e);\n } else {\n assert(IsReadableStreamBYOBReader(reader));\n ReadableStreamBYOBReaderErrorReadIntoRequests(reader, e);\n }\n}\n\n// Readers\n\nexport type ReadableStreamReader = ReadableStreamDefaultReader | ReadableStreamBYOBReader;\n\nexport {\n ReadableStreamDefaultReader,\n ReadableStreamBYOBReader\n};\n\n// Controllers\n\nexport {\n ReadableStreamDefaultController,\n ReadableStreamBYOBRequest,\n ReadableByteStreamController\n};\n\n// Helper functions for the ReadableStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(`ReadableStream.prototype.${name} can only be used on a ReadableStream`);\n}\n","import type { QueuingStrategyInit } from '../queuing-strategy';\nimport { assertDictionary, assertRequiredField, convertUnrestrictedDouble } from './basic';\n\nexport function convertQueuingStrategyInit(init: QueuingStrategyInit | null | undefined,\n context: string): QueuingStrategyInit {\n assertDictionary(init, context);\n const highWaterMark = init?.highWaterMark;\n assertRequiredField(highWaterMark, 'highWaterMark', 'QueuingStrategyInit');\n return {\n highWaterMark: convertUnrestrictedDouble(highWaterMark)\n };\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst byteLengthSizeFunction = (chunk: ArrayBufferView): number => {\n return chunk.byteLength;\n};\nsetFunctionName(byteLengthSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of bytes in each chunk.\n *\n * @public\n */\nexport default class ByteLengthQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _byteLengthQueuingStrategyHighWaterMark: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'ByteLengthQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._byteLengthQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('highWaterMark');\n }\n return this._byteLengthQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by returning the value of its `byteLength` property.\n */\n get size(): (chunk: ArrayBufferView) => number {\n if (!IsByteLengthQueuingStrategy(this)) {\n throw byteLengthBrandCheckException('size');\n }\n return byteLengthSizeFunction;\n }\n}\n\nObject.defineProperties(ByteLengthQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(ByteLengthQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'ByteLengthQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the ByteLengthQueuingStrategy.\n\nfunction byteLengthBrandCheckException(name: string): TypeError {\n return new TypeError(`ByteLengthQueuingStrategy.prototype.${name} can only be used on a ByteLengthQueuingStrategy`);\n}\n\nexport function IsByteLengthQueuingStrategy(x: any): x is ByteLengthQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_byteLengthQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof ByteLengthQueuingStrategy;\n}\n","import type { QueuingStrategy, QueuingStrategyInit } from './queuing-strategy';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { assertRequiredArgument } from './validators/basic';\nimport { convertQueuingStrategyInit } from './validators/queuing-strategy-init';\n\n// The size function must not have a prototype property nor be a constructor\nconst countSizeFunction = (): 1 => {\n return 1;\n};\nsetFunctionName(countSizeFunction, 'size');\n\n/**\n * A queuing strategy that counts the number of chunks.\n *\n * @public\n */\nexport default class CountQueuingStrategy implements QueuingStrategy {\n /** @internal */\n readonly _countQueuingStrategyHighWaterMark!: number;\n\n constructor(options: QueuingStrategyInit) {\n assertRequiredArgument(options, 1, 'CountQueuingStrategy');\n options = convertQueuingStrategyInit(options, 'First parameter');\n this._countQueuingStrategyHighWaterMark = options.highWaterMark;\n }\n\n /**\n * Returns the high water mark provided to the constructor.\n */\n get highWaterMark(): number {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('highWaterMark');\n }\n return this._countQueuingStrategyHighWaterMark;\n }\n\n /**\n * Measures the size of `chunk` by always returning 1.\n * This ensures that the total queue size is a count of the number of chunks in the queue.\n */\n get size(): (chunk: any) => 1 {\n if (!IsCountQueuingStrategy(this)) {\n throw countBrandCheckException('size');\n }\n return countSizeFunction;\n }\n}\n\nObject.defineProperties(CountQueuingStrategy.prototype, {\n highWaterMark: { enumerable: true },\n size: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(CountQueuingStrategy.prototype, Symbol.toStringTag, {\n value: 'CountQueuingStrategy',\n configurable: true\n });\n}\n\n// Helper functions for the CountQueuingStrategy.\n\nfunction countBrandCheckException(name: string): TypeError {\n return new TypeError(`CountQueuingStrategy.prototype.${name} can only be used on a CountQueuingStrategy`);\n}\n\nexport function IsCountQueuingStrategy(x: any): x is CountQueuingStrategy {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_countQueuingStrategyHighWaterMark')) {\n return false;\n }\n\n return x instanceof CountQueuingStrategy;\n}\n","import { assertDictionary, assertFunction } from './basic';\nimport { promiseCall, reflectCall } from '../helpers/webidl';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from '../transform-stream/transformer';\nimport { TransformStreamDefaultController } from '../transform-stream';\n\nexport function convertTransformer(original: Transformer | null,\n context: string): ValidatedTransformer {\n assertDictionary(original, context);\n const cancel = original?.cancel;\n const flush = original?.flush;\n const readableType = original?.readableType;\n const start = original?.start;\n const transform = original?.transform;\n const writableType = original?.writableType;\n return {\n cancel: cancel === undefined ?\n undefined :\n convertTransformerCancelCallback(cancel, original!, `${context} has member 'cancel' that`),\n flush: flush === undefined ?\n undefined :\n convertTransformerFlushCallback(flush, original!, `${context} has member 'flush' that`),\n readableType,\n start: start === undefined ?\n undefined :\n convertTransformerStartCallback(start, original!, `${context} has member 'start' that`),\n transform: transform === undefined ?\n undefined :\n convertTransformerTransformCallback(transform, original!, `${context} has member 'transform' that`),\n writableType\n };\n}\n\nfunction convertTransformerFlushCallback(\n fn: TransformerFlushCallback,\n original: Transformer,\n context: string\n): (controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => promiseCall(fn, original, [controller]);\n}\n\nfunction convertTransformerStartCallback(\n fn: TransformerStartCallback,\n original: Transformer,\n context: string\n): TransformerStartCallback {\n assertFunction(fn, context);\n return (controller: TransformStreamDefaultController) => reflectCall(fn, original, [controller]);\n}\n\nfunction convertTransformerTransformCallback(\n fn: TransformerTransformCallback,\n original: Transformer,\n context: string\n): (chunk: I, controller: TransformStreamDefaultController) => Promise {\n assertFunction(fn, context);\n return (chunk: I, controller: TransformStreamDefaultController) => promiseCall(fn, original, [chunk, controller]);\n}\n\nfunction convertTransformerCancelCallback(\n fn: TransformerCancelCallback,\n original: Transformer,\n context: string\n): (reason: any) => Promise {\n assertFunction(fn, context);\n return (reason: any) => promiseCall(fn, original, [reason]);\n}\n","import assert from '../stub/assert';\nimport {\n newPromise,\n promiseRejectedWith,\n promiseResolvedWith,\n setPromiseIsHandledToTrue,\n transformPromiseWith,\n uponPromise\n} from './helpers/webidl';\nimport { CreateReadableStream, type DefaultReadableStream, ReadableStream } from './readable-stream';\nimport {\n ReadableStreamDefaultControllerCanCloseOrEnqueue,\n ReadableStreamDefaultControllerClose,\n ReadableStreamDefaultControllerEnqueue,\n ReadableStreamDefaultControllerError,\n ReadableStreamDefaultControllerGetDesiredSize,\n ReadableStreamDefaultControllerHasBackpressure\n} from './readable-stream/default-controller';\nimport type { QueuingStrategy, QueuingStrategySizeCallback } from './queuing-strategy';\nimport { CreateWritableStream, WritableStream, WritableStreamDefaultControllerErrorIfNeeded } from './writable-stream';\nimport { setFunctionName, typeIsObject } from './helpers/miscellaneous';\nimport { IsNonNegativeNumber } from './abstract-ops/miscellaneous';\nimport { convertQueuingStrategy } from './validators/queuing-strategy';\nimport { ExtractHighWaterMark, ExtractSizeAlgorithm } from './abstract-ops/queuing-strategy';\nimport type {\n Transformer,\n TransformerCancelCallback,\n TransformerFlushCallback,\n TransformerStartCallback,\n TransformerTransformCallback,\n ValidatedTransformer\n} from './transform-stream/transformer';\nimport { convertTransformer } from './validators/transformer';\n\n// Class TransformStream\n\n/**\n * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream},\n * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side.\n * In a manner specific to the transform stream in question, writes to the writable side result in new data being\n * made available for reading from the readable side.\n *\n * @public\n */\nexport class TransformStream {\n /** @internal */\n _writable!: WritableStream;\n /** @internal */\n _readable!: DefaultReadableStream;\n /** @internal */\n _backpressure!: boolean;\n /** @internal */\n _backpressureChangePromise!: Promise;\n /** @internal */\n _backpressureChangePromise_resolve!: () => void;\n /** @internal */\n _transformStreamController!: TransformStreamDefaultController;\n\n constructor(\n transformer?: Transformer,\n writableStrategy?: QueuingStrategy,\n readableStrategy?: QueuingStrategy\n );\n constructor(rawTransformer: Transformer | null | undefined = {},\n rawWritableStrategy: QueuingStrategy | null | undefined = {},\n rawReadableStrategy: QueuingStrategy | null | undefined = {}) {\n if (rawTransformer === undefined) {\n rawTransformer = null;\n }\n\n const writableStrategy = convertQueuingStrategy(rawWritableStrategy, 'Second parameter');\n const readableStrategy = convertQueuingStrategy(rawReadableStrategy, 'Third parameter');\n\n const transformer = convertTransformer(rawTransformer, 'First parameter');\n if (transformer.readableType !== undefined) {\n throw new RangeError('Invalid readableType specified');\n }\n if (transformer.writableType !== undefined) {\n throw new RangeError('Invalid writableType specified');\n }\n\n const readableHighWaterMark = ExtractHighWaterMark(readableStrategy, 0);\n const readableSizeAlgorithm = ExtractSizeAlgorithm(readableStrategy);\n const writableHighWaterMark = ExtractHighWaterMark(writableStrategy, 1);\n const writableSizeAlgorithm = ExtractSizeAlgorithm(writableStrategy);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(\n this, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark, readableSizeAlgorithm\n );\n SetUpTransformStreamDefaultControllerFromTransformer(this, transformer);\n\n if (transformer.start !== undefined) {\n startPromise_resolve(transformer.start(this._transformStreamController));\n } else {\n startPromise_resolve(undefined);\n }\n }\n\n /**\n * The readable side of the transform stream.\n */\n get readable(): ReadableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('readable');\n }\n\n return this._readable;\n }\n\n /**\n * The writable side of the transform stream.\n */\n get writable(): WritableStream {\n if (!IsTransformStream(this)) {\n throw streamBrandCheckException('writable');\n }\n\n return this._writable;\n }\n}\n\nObject.defineProperties(TransformStream.prototype, {\n readable: { enumerable: true },\n writable: { enumerable: true }\n});\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStream.prototype, Symbol.toStringTag, {\n value: 'TransformStream',\n configurable: true\n });\n}\n\nexport type {\n Transformer,\n TransformerCancelCallback,\n TransformerStartCallback,\n TransformerFlushCallback,\n TransformerTransformCallback\n};\n\n// Transform Stream Abstract Operations\n\nexport function CreateTransformStream(startAlgorithm: () => void | PromiseLike,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise,\n writableHighWaterMark = 1,\n writableSizeAlgorithm: QueuingStrategySizeCallback = () => 1,\n readableHighWaterMark = 0,\n readableSizeAlgorithm: QueuingStrategySizeCallback = () => 1) {\n assert(IsNonNegativeNumber(writableHighWaterMark));\n assert(IsNonNegativeNumber(readableHighWaterMark));\n\n const stream: TransformStream = Object.create(TransformStream.prototype);\n\n let startPromise_resolve!: (value: void | PromiseLike) => void;\n const startPromise = newPromise(resolve => {\n startPromise_resolve = resolve;\n });\n\n InitializeTransformStream(stream, startPromise, writableHighWaterMark, writableSizeAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n\n const startResult = startAlgorithm();\n startPromise_resolve(startResult);\n return stream;\n}\n\nfunction InitializeTransformStream(stream: TransformStream,\n startPromise: Promise,\n writableHighWaterMark: number,\n writableSizeAlgorithm: QueuingStrategySizeCallback,\n readableHighWaterMark: number,\n readableSizeAlgorithm: QueuingStrategySizeCallback) {\n function startAlgorithm(): Promise {\n return startPromise;\n }\n\n function writeAlgorithm(chunk: I): Promise {\n return TransformStreamDefaultSinkWriteAlgorithm(stream, chunk);\n }\n\n function abortAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSinkAbortAlgorithm(stream, reason);\n }\n\n function closeAlgorithm(): Promise {\n return TransformStreamDefaultSinkCloseAlgorithm(stream);\n }\n\n stream._writable = CreateWritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm, abortAlgorithm,\n writableHighWaterMark, writableSizeAlgorithm);\n\n function pullAlgorithm(): Promise {\n return TransformStreamDefaultSourcePullAlgorithm(stream);\n }\n\n function cancelAlgorithm(reason: any): Promise {\n return TransformStreamDefaultSourceCancelAlgorithm(stream, reason);\n }\n\n stream._readable = CreateReadableStream(startAlgorithm, pullAlgorithm, cancelAlgorithm, readableHighWaterMark,\n readableSizeAlgorithm);\n\n // The [[backpressure]] slot is set to undefined so that it can be initialised by TransformStreamSetBackpressure.\n stream._backpressure = undefined!;\n stream._backpressureChangePromise = undefined!;\n stream._backpressureChangePromise_resolve = undefined!;\n TransformStreamSetBackpressure(stream, true);\n\n stream._transformStreamController = undefined!;\n}\n\nfunction IsTransformStream(x: unknown): x is TransformStream {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {\n return false;\n }\n\n return x instanceof TransformStream;\n}\n\n// This is a no-op if both sides are already errored.\nfunction TransformStreamError(stream: TransformStream, e: any) {\n ReadableStreamDefaultControllerError(stream._readable._readableStreamController, e);\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n}\n\nfunction TransformStreamErrorWritableAndUnblockWrite(stream: TransformStream, e: any) {\n TransformStreamDefaultControllerClearAlgorithms(stream._transformStreamController);\n WritableStreamDefaultControllerErrorIfNeeded(stream._writable._writableStreamController, e);\n TransformStreamUnblockWrite(stream);\n}\n\nfunction TransformStreamUnblockWrite(stream: TransformStream) {\n if (stream._backpressure) {\n // Pretend that pull() was called to permit any pending write() calls to complete. TransformStreamSetBackpressure()\n // cannot be called from enqueue() or pull() once the ReadableStream is errored, so this will will be the final time\n // _backpressure is set.\n TransformStreamSetBackpressure(stream, false);\n }\n}\n\nfunction TransformStreamSetBackpressure(stream: TransformStream, backpressure: boolean) {\n // Passes also when called during construction.\n assert(stream._backpressure !== backpressure);\n\n if (stream._backpressureChangePromise !== undefined) {\n stream._backpressureChangePromise_resolve();\n }\n\n stream._backpressureChangePromise = newPromise(resolve => {\n stream._backpressureChangePromise_resolve = resolve;\n });\n\n stream._backpressure = backpressure;\n}\n\n// Class TransformStreamDefaultController\n\n/**\n * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}.\n *\n * @public\n */\nexport class TransformStreamDefaultController {\n /** @internal */\n _controlledTransformStream: TransformStream;\n /** @internal */\n _finishPromise: Promise | undefined;\n /** @internal */\n _finishPromise_resolve?: (value?: undefined) => void;\n /** @internal */\n _finishPromise_reject?: (reason: any) => void;\n /** @internal */\n _transformAlgorithm: (chunk: any) => Promise;\n /** @internal */\n _flushAlgorithm: () => Promise;\n /** @internal */\n _cancelAlgorithm: (reason: any) => Promise;\n\n private constructor() {\n throw new TypeError('Illegal constructor');\n }\n\n /**\n * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full.\n */\n get desiredSize(): number | null {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('desiredSize');\n }\n\n const readableController = this._controlledTransformStream._readable._readableStreamController;\n return ReadableStreamDefaultControllerGetDesiredSize(readableController);\n }\n\n /**\n * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream.\n */\n enqueue(chunk: O): void;\n enqueue(chunk: O = undefined!): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('enqueue');\n }\n\n TransformStreamDefaultControllerEnqueue(this, chunk);\n }\n\n /**\n * Errors both the readable side and the writable side of the controlled transform stream, making all future\n * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded.\n */\n error(reason: any = undefined): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('error');\n }\n\n TransformStreamDefaultControllerError(this, reason);\n }\n\n /**\n * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the\n * transformer only needs to consume a portion of the chunks written to the writable side.\n */\n terminate(): void {\n if (!IsTransformStreamDefaultController(this)) {\n throw defaultControllerBrandCheckException('terminate');\n }\n\n TransformStreamDefaultControllerTerminate(this);\n }\n}\n\nObject.defineProperties(TransformStreamDefaultController.prototype, {\n enqueue: { enumerable: true },\n error: { enumerable: true },\n terminate: { enumerable: true },\n desiredSize: { enumerable: true }\n});\nsetFunctionName(TransformStreamDefaultController.prototype.enqueue, 'enqueue');\nsetFunctionName(TransformStreamDefaultController.prototype.error, 'error');\nsetFunctionName(TransformStreamDefaultController.prototype.terminate, 'terminate');\nif (typeof Symbol.toStringTag === 'symbol') {\n Object.defineProperty(TransformStreamDefaultController.prototype, Symbol.toStringTag, {\n value: 'TransformStreamDefaultController',\n configurable: true\n });\n}\n\n// Transform Stream Default Controller Abstract Operations\n\nfunction IsTransformStreamDefaultController(x: any): x is TransformStreamDefaultController {\n if (!typeIsObject(x)) {\n return false;\n }\n\n if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {\n return false;\n }\n\n return x instanceof TransformStreamDefaultController;\n}\n\nfunction SetUpTransformStreamDefaultController(stream: TransformStream,\n controller: TransformStreamDefaultController,\n transformAlgorithm: (chunk: I) => Promise,\n flushAlgorithm: () => Promise,\n cancelAlgorithm: (reason: any) => Promise) {\n assert(IsTransformStream(stream));\n assert(stream._transformStreamController === undefined);\n\n controller._controlledTransformStream = stream;\n stream._transformStreamController = controller;\n\n controller._transformAlgorithm = transformAlgorithm;\n controller._flushAlgorithm = flushAlgorithm;\n controller._cancelAlgorithm = cancelAlgorithm;\n\n controller._finishPromise = undefined;\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nfunction SetUpTransformStreamDefaultControllerFromTransformer(stream: TransformStream,\n transformer: ValidatedTransformer) {\n const controller: TransformStreamDefaultController = Object.create(TransformStreamDefaultController.prototype);\n\n let transformAlgorithm: (chunk: I) => Promise;\n let flushAlgorithm: () => Promise;\n let cancelAlgorithm: (reason: any) => Promise;\n\n if (transformer.transform !== undefined) {\n transformAlgorithm = chunk => transformer.transform!(chunk, controller);\n } else {\n transformAlgorithm = chunk => {\n try {\n TransformStreamDefaultControllerEnqueue(controller, chunk as unknown as O);\n return promiseResolvedWith(undefined);\n } catch (transformResultE) {\n return promiseRejectedWith(transformResultE);\n }\n };\n }\n\n if (transformer.flush !== undefined) {\n flushAlgorithm = () => transformer.flush!(controller);\n } else {\n flushAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n if (transformer.cancel !== undefined) {\n cancelAlgorithm = reason => transformer.cancel!(reason);\n } else {\n cancelAlgorithm = () => promiseResolvedWith(undefined);\n }\n\n SetUpTransformStreamDefaultController(stream, controller, transformAlgorithm, flushAlgorithm, cancelAlgorithm);\n}\n\nfunction TransformStreamDefaultControllerClearAlgorithms(controller: TransformStreamDefaultController) {\n controller._transformAlgorithm = undefined!;\n controller._flushAlgorithm = undefined!;\n controller._cancelAlgorithm = undefined!;\n}\n\nfunction TransformStreamDefaultControllerEnqueue(controller: TransformStreamDefaultController, chunk: O) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(readableController)) {\n throw new TypeError('Readable side is not in a state that permits enqueue');\n }\n\n // We throttle transform invocations based on the backpressure of the ReadableStream, but we still\n // accept TransformStreamDefaultControllerEnqueue() calls.\n\n try {\n ReadableStreamDefaultControllerEnqueue(readableController, chunk);\n } catch (e) {\n // This happens when readableStrategy.size() throws.\n TransformStreamErrorWritableAndUnblockWrite(stream, e);\n\n throw stream._readable._storedError;\n }\n\n const backpressure = ReadableStreamDefaultControllerHasBackpressure(readableController);\n if (backpressure !== stream._backpressure) {\n assert(backpressure);\n TransformStreamSetBackpressure(stream, true);\n }\n}\n\nfunction TransformStreamDefaultControllerError(controller: TransformStreamDefaultController, e: any) {\n TransformStreamError(controller._controlledTransformStream, e);\n}\n\nfunction TransformStreamDefaultControllerPerformTransform(controller: TransformStreamDefaultController,\n chunk: I) {\n const transformPromise = controller._transformAlgorithm(chunk);\n return transformPromiseWith(transformPromise, undefined, r => {\n TransformStreamError(controller._controlledTransformStream, r);\n throw r;\n });\n}\n\nfunction TransformStreamDefaultControllerTerminate(controller: TransformStreamDefaultController) {\n const stream = controller._controlledTransformStream;\n const readableController = stream._readable._readableStreamController;\n\n ReadableStreamDefaultControllerClose(readableController);\n\n const error = new TypeError('TransformStream terminated');\n TransformStreamErrorWritableAndUnblockWrite(stream, error);\n}\n\n// TransformStreamDefaultSink Algorithms\n\nfunction TransformStreamDefaultSinkWriteAlgorithm(stream: TransformStream, chunk: I): Promise {\n assert(stream._writable._state === 'writable');\n\n const controller = stream._transformStreamController;\n\n if (stream._backpressure) {\n const backpressureChangePromise = stream._backpressureChangePromise;\n assert(backpressureChangePromise !== undefined);\n return transformPromiseWith(backpressureChangePromise, () => {\n const writable = stream._writable;\n const state = writable._state;\n if (state === 'erroring') {\n throw writable._storedError;\n }\n assert(state === 'writable');\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n });\n }\n\n return TransformStreamDefaultControllerPerformTransform(controller, chunk);\n}\n\nfunction TransformStreamDefaultSinkAbortAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _cancelAlgorithm calls readable.cancel() internally,\n // we don't run the _cancelAlgorithm again.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerError(readable._readableStreamController, reason);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\nfunction TransformStreamDefaultSinkCloseAlgorithm(stream: TransformStream): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._readable cannot change after construction, so caching it across a call to user code is safe.\n const readable = stream._readable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls readable.cancel() internally,\n // we don't also run the _cancelAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const flushPromise = controller._flushAlgorithm();\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(flushPromise, () => {\n if (readable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, readable._storedError);\n } else {\n ReadableStreamDefaultControllerClose(readable._readableStreamController);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n ReadableStreamDefaultControllerError(readable._readableStreamController, r);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// TransformStreamDefaultSource Algorithms\n\nfunction TransformStreamDefaultSourcePullAlgorithm(stream: TransformStream): Promise {\n // Invariant. Enforced by the promises returned by start() and pull().\n assert(stream._backpressure);\n\n assert(stream._backpressureChangePromise !== undefined);\n\n TransformStreamSetBackpressure(stream, false);\n\n // Prevent the next pull() call until there is backpressure.\n return stream._backpressureChangePromise;\n}\n\nfunction TransformStreamDefaultSourceCancelAlgorithm(stream: TransformStream, reason: any): Promise {\n const controller = stream._transformStreamController;\n if (controller._finishPromise !== undefined) {\n return controller._finishPromise;\n }\n\n // stream._writable cannot change after construction, so caching it across a call to user code is safe.\n const writable = stream._writable;\n\n // Assign the _finishPromise now so that if _flushAlgorithm calls writable.abort() or\n // writable.cancel() internally, we don't run the _cancelAlgorithm again, or also run the\n // _flushAlgorithm.\n controller._finishPromise = newPromise((resolve, reject) => {\n controller._finishPromise_resolve = resolve;\n controller._finishPromise_reject = reject;\n });\n\n const cancelPromise = controller._cancelAlgorithm(reason);\n TransformStreamDefaultControllerClearAlgorithms(controller);\n\n uponPromise(cancelPromise, () => {\n if (writable._state === 'errored') {\n defaultControllerFinishPromiseReject(controller, writable._storedError);\n } else {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, reason);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseResolve(controller);\n }\n return null;\n }, r => {\n WritableStreamDefaultControllerErrorIfNeeded(writable._writableStreamController, r);\n TransformStreamUnblockWrite(stream);\n defaultControllerFinishPromiseReject(controller, r);\n return null;\n });\n\n return controller._finishPromise;\n}\n\n// Helper functions for the TransformStreamDefaultController.\n\nfunction defaultControllerBrandCheckException(name: string): TypeError {\n return new TypeError(\n `TransformStreamDefaultController.prototype.${name} can only be used on a TransformStreamDefaultController`);\n}\n\nexport function defaultControllerFinishPromiseResolve(controller: TransformStreamDefaultController) {\n if (controller._finishPromise_resolve === undefined) {\n return;\n }\n\n controller._finishPromise_resolve();\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\nexport function defaultControllerFinishPromiseReject(controller: TransformStreamDefaultController, reason: any) {\n if (controller._finishPromise_reject === undefined) {\n return;\n }\n\n setPromiseIsHandledToTrue(controller._finishPromise!);\n controller._finishPromise_reject(reason);\n controller._finishPromise_resolve = undefined;\n controller._finishPromise_reject = undefined;\n}\n\n// Helper functions for the TransformStream.\n\nfunction streamBrandCheckException(name: string): TypeError {\n return new TypeError(\n 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\ No newline at end of file diff --git a/node_modules/web-streams-polyfill/dist/types/polyfill.d.ts b/node_modules/web-streams-polyfill/dist/types/polyfill.d.ts new file mode 100644 index 0000000..11cbcbf --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/types/polyfill.d.ts @@ -0,0 +1,24 @@ +/// +/// +import { ReadableStreamAsyncIterator, ReadableStreamIteratorOptions } from './ponyfill'; +export * from './ponyfill'; +declare global { + interface ReadableStream extends AsyncIterable { + /** + * Asynchronously iterates over the chunks in the stream's internal queue. + * + * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader. + * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method + * is called, e.g. by breaking out of the loop. + * + * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also + * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing + * `true` for the `preventCancel` option. + */ + values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + /** + * {@inheritDoc ReadableStream.values} + */ + [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + } +} diff --git a/node_modules/web-streams-polyfill/dist/types/ponyfill.d.ts b/node_modules/web-streams-polyfill/dist/types/ponyfill.d.ts new file mode 100644 index 0000000..6bb37e2 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/types/ponyfill.d.ts @@ -0,0 +1,780 @@ +/// +/** + * A signal object that allows you to communicate with a request and abort it if required + * via its associated `AbortController` object. + * + * @remarks + * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types. + * It is redefined here, so it can be polyfilled without a DOM, for example with + * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment. + * + * @public + */ +export declare interface AbortSignal { + /** + * Whether the request is aborted. + */ + readonly aborted: boolean; + /** + * If aborted, returns the reason for aborting. + */ + readonly reason?: any; + /** + * Add an event listener to be triggered when this signal becomes aborted. + */ + addEventListener(type: 'abort', listener: () => void): void; + /** + * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}. + */ + removeEventListener(type: 'abort', listener: () => void): void; +} +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +export declare class ByteLengthQueuingStrategy implements QueuingStrategy { + constructor(options: QueuingStrategyInit); + /* + * Returns the high water mark provided to the constructor. + */ + readonly highWaterMark: number; + /* + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + readonly size: (chunk: ArrayBufferView) => number; +} +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +export declare class CountQueuingStrategy implements QueuingStrategy { + constructor(options: QueuingStrategyInit); + /* + * Returns the high water mark provided to the constructor. + */ + readonly highWaterMark: number; + /* + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + readonly size: (chunk: any) => 1; +} +/** + * A queuing strategy. + * + * @public + */ +export declare interface QueuingStrategy { + /** + * A non-negative number indicating the high water mark of the stream using this queuing strategy. + */ + highWaterMark?: number; + /** + * A function that computes and returns the finite non-negative size of the given chunk value. + */ + size?: QueuingStrategySizeCallback; +} +/** + * @public + */ +export declare interface QueuingStrategyInit { + /** + * {@inheritDoc QueuingStrategy.highWaterMark} + */ + highWaterMark: number; +} +/** + * {@inheritDoc QueuingStrategy.size} + * @public + */ +export declare type QueuingStrategySizeCallback = (chunk: T) => number; +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +export declare class ReadableByteStreamController { + private constructor(); + /* + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + readonly byobRequest: ReadableStreamBYOBRequest | null; + /* + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + readonly desiredSize: number | null; + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close(): void; + /** + * Enqueues the given chunk chunk in the controlled readable stream. + * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown. + */ + enqueue(chunk: ArrayBufferView): void; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e?: any): void; +} +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +export declare class ReadableStream implements AsyncIterable { + constructor(underlyingSource: UnderlyingByteSource, strategy?: { + highWaterMark?: number; + size?: undefined; + }); + constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy); + /* + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + readonly locked: boolean; + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason?: any): Promise; + /** + * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader. + * + * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams, + * i.e. streams which were constructed specifically with the ability to handle "bring your own buffer" reading. + * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its + * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise + * control over allocation. + */ + getReader({ mode }: { + mode: 'byob'; + }): ReadableStreamBYOBReader; + /** + * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader. + * While the stream is locked, no other reader can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to consume a stream + * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours + * or cancel the stream, which would interfere with your abstraction. + */ + getReader(): ReadableStreamDefaultReader; + /** + * Provides a convenient, chainable way of piping this readable stream through a transform stream + * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream + * into the writable side of the supplied pair, and returns the readable side for further use. + * + * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader. + */ + pipeThrough(transform: { + readable: RS; + writable: WritableStream; + }, options?: StreamPipeOptions): RS; + /** + * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under + * various error conditions can be customized with a number of passed options. It returns a promise that fulfills + * when the piping process completes successfully, or rejects if any errors were encountered. + * + * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader. + */ + pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise; + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee(): [ + ReadableStream, + ReadableStream + ]; + /** + * Asynchronously iterates over the chunks in the stream's internal queue. + * + * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader. + * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method + * is called, e.g. by breaking out of the loop. + * + * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also + * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing + * `true` for the `preventCancel` option. + */ + values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + /** + * {@inheritDoc ReadableStream.values} + */ + [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream; +} +/** + * An async iterator returned by {@link ReadableStream.values}. + * + * @public + */ +export declare interface ReadableStreamAsyncIterator extends AsyncIterableIterator { + next(): Promise>; + return(value?: any): Promise>; +} +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +export declare class ReadableStreamBYOBReader { + constructor(stream: ReadableStream); + /* + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + readonly closed: Promise; + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason?: any): Promise; + /** + * Attempts to reads bytes into view, and returns a promise resolved with the result. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise>; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock(): void; +} +/** + * Options for {@link ReadableStreamBYOBReader.read | reading} a stream + * with a {@link ReadableStreamBYOBReader | BYOB reader}. + * + * @public + */ +export declare interface ReadableStreamBYOBReaderReadOptions { + min?: number; +} +/** + * A result returned by {@link ReadableStreamBYOBReader.read}. + * + * @public + */ +export declare type ReadableStreamBYOBReadResult = { + done: false; + value: T; +} | { + done: true; + value: T | undefined; +}; +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +export declare class ReadableStreamBYOBRequest { + private constructor(); + /* + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + readonly view: ArrayBufferView | null; + /** + * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into + * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer. + * + * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer + * modifiable. + */ + respond(bytesWritten: number): void; + /** + * Indicates to the associated readable byte stream that instead of writing into + * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`, + * which will be given to the consumer of the readable byte stream. + * + * After this method is called, `view` will be transferred and no longer modifiable. + */ + respondWithNewView(view: ArrayBufferView): void; +} +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +export declare class ReadableStreamDefaultController { + private constructor(); + /* + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + readonly desiredSize: number | null; + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close(): void; + /** + * Enqueues the given chunk `chunk` in the controlled readable stream. + */ + enqueue(chunk: R): void; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e?: any): void; +} +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +export declare class ReadableStreamDefaultReader { + constructor(stream: ReadableStream); + /* + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + readonly closed: Promise; + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason?: any): Promise; + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read(): Promise>; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock(): void; +} +/** + * A common interface for a `ReadableStreamDefaultReader` implementation. + * + * @public + */ +export declare interface ReadableStreamDefaultReaderLike { + readonly closed: Promise; + cancel(reason?: any): Promise; + read(): Promise>; + releaseLock(): void; +} +/** + * A result returned by {@link ReadableStreamDefaultReader.read}. + * + * @public + */ +export declare type ReadableStreamDefaultReadResult = { + done: false; + value: T; +} | { + done: true; + value?: undefined; +}; +/** + * Options for {@link ReadableStream.values | async iterating} a stream. + * + * @public + */ +export declare interface ReadableStreamIteratorOptions { + preventCancel?: boolean; +} +/** + * A common interface for a `ReadadableStream` implementation. + * + * @public + */ +export declare interface ReadableStreamLike { + readonly locked: boolean; + getReader(): ReadableStreamDefaultReaderLike; +} +/** + * A pair of a {@link ReadableStream | readable stream} and {@link WritableStream | writable stream} that can be passed + * to {@link ReadableStream.pipeThrough}. + * + * @public + */ +export declare interface ReadableWritablePair { + readable: ReadableStream; + writable: WritableStream; +} +/** + * Options for {@link ReadableStream.pipeTo | piping} a stream. + * + * @public + */ +export declare interface StreamPipeOptions { + /** + * If set to true, {@link ReadableStream.pipeTo} will not abort the writable stream if the readable stream errors. + */ + preventAbort?: boolean; + /** + * If set to true, {@link ReadableStream.pipeTo} will not cancel the readable stream if the writable stream closes + * or errors. + */ + preventCancel?: boolean; + /** + * If set to true, {@link ReadableStream.pipeTo} will not close the writable stream if the readable stream closes. + */ + preventClose?: boolean; + /** + * Can be set to an {@link AbortSignal} to allow aborting an ongoing pipe operation via the corresponding + * `AbortController`. In this case, the source readable stream will be canceled, and the destination writable stream + * aborted, unless the respective options `preventCancel` or `preventAbort` are set. + */ + signal?: AbortSignal; +} +/** + * A transformer for constructing a {@link TransformStream}. + * + * @public + */ +export declare interface Transformer { + /** + * A function that is called immediately during creation of the {@link TransformStream}. + */ + start?: TransformerStartCallback; + /** + * A function called when a new chunk originally written to the writable side is ready to be transformed. + */ + transform?: TransformerTransformCallback; + /** + * A function called after all chunks written to the writable side have been transformed by successfully passing + * through {@link Transformer.transform | transform()}, and the writable side is about to be closed. + */ + flush?: TransformerFlushCallback; + /** + * A function called when the readable side is cancelled, or when the writable side is aborted. + */ + cancel?: TransformerCancelCallback; + readableType?: undefined; + writableType?: undefined; +} +/** @public */ +export declare type TransformerCancelCallback = (reason: any) => void | PromiseLike; +/** @public */ +export declare type TransformerFlushCallback = (controller: TransformStreamDefaultController) => void | PromiseLike; +/** @public */ +export declare type TransformerStartCallback = (controller: TransformStreamDefaultController) => void | PromiseLike; +/** @public */ +export declare type TransformerTransformCallback = (chunk: I, controller: TransformStreamDefaultController) => void | PromiseLike; +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +export declare class TransformStream { + constructor(transformer?: Transformer, writableStrategy?: QueuingStrategy, readableStrategy?: QueuingStrategy); + /* + * The readable side of the transform stream. + */ + readonly readable: ReadableStream; + /* + * The writable side of the transform stream. + */ + readonly writable: WritableStream; +} +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +export declare class TransformStreamDefaultController { + private constructor(); + /* + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + readonly desiredSize: number | null; + /** + * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream. + */ + enqueue(chunk: O): void; + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason?: any): void; + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate(): void; +} +/** + * An underlying byte source for constructing a {@link ReadableStream}. + * + * @public + */ +export declare interface UnderlyingByteSource { + /** + * {@inheritDoc UnderlyingSource.start} + */ + start?: UnderlyingByteSourceStartCallback; + /** + * {@inheritDoc UnderlyingSource.pull} + */ + pull?: UnderlyingByteSourcePullCallback; + /** + * {@inheritDoc UnderlyingSource.cancel} + */ + cancel?: UnderlyingSourceCancelCallback; + /** + * Can be set to "bytes" to signal that the constructed {@link ReadableStream} is a readable byte stream. + * This ensures that the resulting {@link ReadableStream} will successfully be able to vend BYOB readers via its + * {@link ReadableStream.(getReader:1) | getReader()} method. + * It also affects the controller argument passed to the {@link UnderlyingByteSource.start | start()} + * and {@link UnderlyingByteSource.pull | pull()} methods. + */ + type: 'bytes'; + /** + * Can be set to a positive integer to cause the implementation to automatically allocate buffers for the + * underlying source code to write into. In this case, when a consumer is using a default reader, the stream + * implementation will automatically allocate an ArrayBuffer of the given size, so that + * {@link ReadableByteStreamController.byobRequest | controller.byobRequest} is always present, + * as if the consumer was using a BYOB reader. + */ + autoAllocateChunkSize?: number; +} +/** @public */ +export declare type UnderlyingByteSourcePullCallback = (controller: ReadableByteStreamController) => void | PromiseLike; +/** @public */ +export declare type UnderlyingByteSourceStartCallback = (controller: ReadableByteStreamController) => void | PromiseLike; +/** + * An underlying sink for constructing a {@link WritableStream}. + * + * @public + */ +export declare interface UnderlyingSink { + /** + * A function that is called immediately during creation of the {@link WritableStream}. + */ + start?: UnderlyingSinkStartCallback; + /** + * A function that is called when a new chunk of data is ready to be written to the underlying sink. The stream + * implementation guarantees that this function will be called only after previous writes have succeeded, and never + * before {@link UnderlyingSink.start | start()} has succeeded or after {@link UnderlyingSink.close | close()} or + * {@link UnderlyingSink.abort | abort()} have been called. + * + * This function is used to actually send the data to the resource presented by the underlying sink, for example by + * calling a lower-level API. + */ + write?: UnderlyingSinkWriteCallback; + /** + * A function that is called after the producer signals, via + * {@link WritableStreamDefaultWriter.close | writer.close()}, that they are done writing chunks to the stream, and + * subsequently all queued-up writes have successfully completed. + * + * This function can perform any actions necessary to finalize or flush writes to the underlying sink, and release + * access to any held resources. + */ + close?: UnderlyingSinkCloseCallback; + /** + * A function that is called after the producer signals, via {@link WritableStream.abort | stream.abort()} or + * {@link WritableStreamDefaultWriter.abort | writer.abort()}, that they wish to abort the stream. It takes as its + * argument the same value as was passed to those methods by the producer. + * + * Writable streams can additionally be aborted under certain conditions during piping; see the definition of the + * {@link ReadableStream.pipeTo | pipeTo()} method for more details. + * + * This function can clean up any held resources, much like {@link UnderlyingSink.close | close()}, but perhaps with + * some custom handling. + */ + abort?: UnderlyingSinkAbortCallback; + type?: undefined; +} +/** @public */ +export declare type UnderlyingSinkAbortCallback = (reason: any) => void | PromiseLike; +/** @public */ +export declare type UnderlyingSinkCloseCallback = () => void | PromiseLike; +/** @public */ +export declare type UnderlyingSinkStartCallback = (controller: WritableStreamDefaultController) => void | PromiseLike; +/** @public */ +export declare type UnderlyingSinkWriteCallback = (chunk: W, controller: WritableStreamDefaultController) => void | PromiseLike; +/** + * An underlying source for constructing a {@link ReadableStream}. + * + * @public + */ +export declare interface UnderlyingSource { + /** + * A function that is called immediately during creation of the {@link ReadableStream}. + */ + start?: UnderlyingSourceStartCallback; + /** + * A function that is called whenever the stream’s internal queue of chunks becomes not full, + * i.e. whenever the queue’s desired size becomes positive. Generally, it will be called repeatedly + * until the queue reaches its high water mark (i.e. until the desired size becomes non-positive). + */ + pull?: UnderlyingSourcePullCallback; + /** + * A function that is called whenever the consumer cancels the stream, via + * {@link ReadableStream.cancel | stream.cancel()}, + * {@link ReadableStreamDefaultReader.cancel | defaultReader.cancel()}, or + * {@link ReadableStreamBYOBReader.cancel | byobReader.cancel()}. + * It takes as its argument the same value as was passed to those methods by the consumer. + */ + cancel?: UnderlyingSourceCancelCallback; + type?: undefined; +} +/** @public */ +export declare type UnderlyingSourceCancelCallback = (reason: any) => void | PromiseLike; +/** @public */ +export declare type UnderlyingSourcePullCallback = (controller: ReadableStreamDefaultController) => void | PromiseLike; +/** @public */ +export declare type UnderlyingSourceStartCallback = (controller: ReadableStreamDefaultController) => void | PromiseLike; +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +export declare class WritableStream { + constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy); + /* + * Returns whether or not the writable stream is locked to a writer. + */ + readonly locked: boolean; + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason?: any): Promise; + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close(): Promise; + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter(): WritableStreamDefaultWriter; +} +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +export declare class WritableStreamDefaultController { + private constructor(); + /* + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + readonly abortReason: any; + /* + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + readonly signal: AbortSignal; + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e?: any): void; +} +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +export declare class WritableStreamDefaultWriter { + constructor(stream: WritableStream); + /* + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + readonly closed: Promise; + /* + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + readonly desiredSize: number | null; + /* + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + readonly ready: Promise; + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason?: any): Promise; + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close(): Promise; + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock(): void; + /** + * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully, + * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return + * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes + * errored before the writing process is initiated. + * + * Note that what "success" means is up to the underlying sink; it might indicate simply that the chunk has been + * accepted, and not necessarily that it is safely saved to its ultimate destination. + */ + write(chunk: W): Promise; +} +export {}; diff --git a/node_modules/web-streams-polyfill/dist/types/ts3.6/polyfill.d.ts b/node_modules/web-streams-polyfill/dist/types/ts3.6/polyfill.d.ts new file mode 100644 index 0000000..1e24288 --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/types/ts3.6/polyfill.d.ts @@ -0,0 +1,28 @@ +/// +/// + +import type { ReadableStreamAsyncIterator, ReadableStreamIteratorOptions } from './ponyfill'; + +export * from './ponyfill'; + +declare global { + interface ReadableStream extends AsyncIterable { + /** + * Asynchronously iterates over the chunks in the stream's internal queue. + * + * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader. + * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method + * is called, e.g. by breaking out of the loop. + * + * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also + * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing + * `true` for the `preventCancel` option. + */ + values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + + /** + * {@inheritDoc ReadableStream.values} + */ + [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + } +} diff --git a/node_modules/web-streams-polyfill/dist/types/ts3.6/ponyfill.d.ts b/node_modules/web-streams-polyfill/dist/types/ts3.6/ponyfill.d.ts new file mode 100644 index 0000000..b1fd4ae --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/types/ts3.6/ponyfill.d.ts @@ -0,0 +1,821 @@ +/// + +/** + * A signal object that allows you to communicate with a request and abort it if required + * via its associated `AbortController` object. + * + * @remarks + * This interface is compatible with the `AbortSignal` interface defined in TypeScript's DOM types. + * It is redefined here, so it can be polyfilled without a DOM, for example with + * {@link https://www.npmjs.com/package/abortcontroller-polyfill | abortcontroller-polyfill} in a Node environment. + * + * @public + */ +export declare interface AbortSignal { + /** + * Whether the request is aborted. + */ + readonly aborted: boolean; + /** + * If aborted, returns the reason for aborting. + */ + readonly reason?: any; + /** + * Add an event listener to be triggered when this signal becomes aborted. + */ + addEventListener(type: 'abort', listener: () => void): void; + /** + * Remove an event listener that was previously added with {@link AbortSignal.addEventListener}. + */ + removeEventListener(type: 'abort', listener: () => void): void; +} + +/** + * A queuing strategy that counts the number of bytes in each chunk. + * + * @public + */ +export declare class ByteLengthQueuingStrategy implements QueuingStrategy { + constructor(options: QueuingStrategyInit); + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark(): number; + /** + * Measures the size of `chunk` by returning the value of its `byteLength` property. + */ + get size(): (chunk: ArrayBufferView) => number; +} + +/** + * A queuing strategy that counts the number of chunks. + * + * @public + */ +export declare class CountQueuingStrategy implements QueuingStrategy { + constructor(options: QueuingStrategyInit); + /** + * Returns the high water mark provided to the constructor. + */ + get highWaterMark(): number; + /** + * Measures the size of `chunk` by always returning 1. + * This ensures that the total queue size is a count of the number of chunks in the queue. + */ + get size(): (chunk: any) => 1; +} + +/** + * A queuing strategy. + * + * @public + */ +export declare interface QueuingStrategy { + /** + * A non-negative number indicating the high water mark of the stream using this queuing strategy. + */ + highWaterMark?: number; + /** + * A function that computes and returns the finite non-negative size of the given chunk value. + */ + size?: QueuingStrategySizeCallback; +} + +/** + * @public + */ +export declare interface QueuingStrategyInit { + /** + * {@inheritDoc QueuingStrategy.highWaterMark} + */ + highWaterMark: number; +} + +/** + * {@inheritDoc QueuingStrategy.size} + * @public + */ +export declare type QueuingStrategySizeCallback = (chunk: T) => number; + +/** + * Allows control of a {@link ReadableStream | readable byte stream}'s state and internal queue. + * + * @public + */ +export declare class ReadableByteStreamController { + private constructor(); + /** + * Returns the current BYOB pull request, or `null` if there isn't one. + */ + get byobRequest(): ReadableStreamBYOBRequest | null; + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying byte source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize(): number | null; + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close(): void; + /** + * Enqueues the given chunk chunk in the controlled readable stream. + * The chunk has to be an `ArrayBufferView` instance, or else a `TypeError` will be thrown. + */ + enqueue(chunk: ArrayBufferView): void; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e?: any): void; +} + +/** + * A readable stream represents a source of data, from which you can read. + * + * @public + */ +export declare class ReadableStream implements AsyncIterable { + constructor(underlyingSource: UnderlyingByteSource, strategy?: { + highWaterMark?: number; + size?: undefined; + }); + constructor(underlyingSource?: UnderlyingSource, strategy?: QueuingStrategy); + /** + * Whether or not the readable stream is locked to a {@link ReadableStreamDefaultReader | reader}. + */ + get locked(): boolean; + /** + * Cancels the stream, signaling a loss of interest in the stream by a consumer. + * + * The supplied `reason` argument will be given to the underlying source's {@link UnderlyingSource.cancel | cancel()} + * method, which might or might not use it. + */ + cancel(reason?: any): Promise; + /** + * Creates a {@link ReadableStreamBYOBReader} and locks the stream to the new reader. + * + * This call behaves the same way as the no-argument variant, except that it only works on readable byte streams, + * i.e. streams which were constructed specifically with the ability to handle "bring your own buffer" reading. + * The returned BYOB reader provides the ability to directly read individual chunks from the stream via its + * {@link ReadableStreamBYOBReader.read | read()} method, into developer-supplied buffers, allowing more precise + * control over allocation. + */ + getReader({ mode }: { + mode: 'byob'; + }): ReadableStreamBYOBReader; + /** + * Creates a {@link ReadableStreamDefaultReader} and locks the stream to the new reader. + * While the stream is locked, no other reader can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to consume a stream + * in its entirety. By getting a reader for the stream, you can ensure nobody else can interleave reads with yours + * or cancel the stream, which would interfere with your abstraction. + */ + getReader(): ReadableStreamDefaultReader; + /** + * Provides a convenient, chainable way of piping this readable stream through a transform stream + * (or any other `{ writable, readable }` pair). It simply {@link ReadableStream.pipeTo | pipes} the stream + * into the writable side of the supplied pair, and returns the readable side for further use. + * + * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader. + */ + pipeThrough(transform: { + readable: RS; + writable: WritableStream; + }, options?: StreamPipeOptions): RS; + /** + * Pipes this readable stream to a given writable stream. The way in which the piping process behaves under + * various error conditions can be customized with a number of passed options. It returns a promise that fulfills + * when the piping process completes successfully, or rejects if any errors were encountered. + * + * Piping a stream will lock it for the duration of the pipe, preventing any other consumer from acquiring a reader. + */ + pipeTo(destination: WritableStream, options?: StreamPipeOptions): Promise; + /** + * Tees this readable stream, returning a two-element array containing the two resulting branches as + * new {@link ReadableStream} instances. + * + * Teeing a stream will lock it, preventing any other consumer from acquiring a reader. + * To cancel the stream, cancel both of the resulting branches; a composite cancellation reason will then be + * propagated to the stream's underlying source. + * + * Note that the chunks seen in each branch will be the same object. If the chunks are not immutable, + * this could allow interference between the two branches. + */ + tee(): [ReadableStream, ReadableStream]; + /** + * Asynchronously iterates over the chunks in the stream's internal queue. + * + * Asynchronously iterating over the stream will lock it, preventing any other consumer from acquiring a reader. + * The lock will be released if the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method + * is called, e.g. by breaking out of the loop. + * + * By default, calling the async iterator's {@link ReadableStreamAsyncIterator.return | return()} method will also + * cancel the stream. To prevent this, use the stream's {@link ReadableStream.values | values()} method, passing + * `true` for the `preventCancel` option. + */ + values(options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + /** + * {@inheritDoc ReadableStream.values} + */ + [Symbol.asyncIterator](options?: ReadableStreamIteratorOptions): ReadableStreamAsyncIterator; + /** + * Creates a new ReadableStream wrapping the provided iterable or async iterable. + * + * This can be used to adapt various kinds of objects into a readable stream, + * such as an array, an async generator, or a Node.js readable stream. + */ + static from(asyncIterable: Iterable | AsyncIterable | ReadableStreamLike): ReadableStream; +} + +/** + * An async iterator returned by {@link ReadableStream.values}. + * + * @public + */ +export declare interface ReadableStreamAsyncIterator extends AsyncIterableIterator { + next(): Promise>; + return(value?: any): Promise>; +} + +/** + * A BYOB reader vended by a {@link ReadableStream}. + * + * @public + */ +export declare class ReadableStreamBYOBReader { + constructor(stream: ReadableStream); + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the reader's lock is released before the stream finishes closing. + */ + get closed(): Promise; + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason?: any): Promise; + /** + * Attempts to reads bytes into view, and returns a promise resolved with the result. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise>; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamBYOBReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock(): void; +} + +/** + * Options for {@link ReadableStreamBYOBReader.read | reading} a stream + * with a {@link ReadableStreamBYOBReader | BYOB reader}. + * + * @public + */ +export declare interface ReadableStreamBYOBReaderReadOptions { + min?: number; +} + +/** + * A result returned by {@link ReadableStreamBYOBReader.read}. + * + * @public + */ +export declare type ReadableStreamBYOBReadResult = { + done: false; + value: T; +} | { + done: true; + value: T | undefined; +}; + +/** + * A pull-into request in a {@link ReadableByteStreamController}. + * + * @public + */ +export declare class ReadableStreamBYOBRequest { + private constructor(); + /** + * Returns the view for writing in to, or `null` if the BYOB request has already been responded to. + */ + get view(): ArrayBufferView | null; + /** + * Indicates to the associated readable byte stream that `bytesWritten` bytes were written into + * {@link ReadableStreamBYOBRequest.view | view}, causing the result be surfaced to the consumer. + * + * After this method is called, {@link ReadableStreamBYOBRequest.view | view} will be transferred and no longer + * modifiable. + */ + respond(bytesWritten: number): void; + /** + * Indicates to the associated readable byte stream that instead of writing into + * {@link ReadableStreamBYOBRequest.view | view}, the underlying byte source is providing a new `ArrayBufferView`, + * which will be given to the consumer of the readable byte stream. + * + * After this method is called, `view` will be transferred and no longer modifiable. + */ + respondWithNewView(view: ArrayBufferView): void; +} + +/** + * Allows control of a {@link ReadableStream | readable stream}'s state and internal queue. + * + * @public + */ +export declare class ReadableStreamDefaultController { + private constructor(); + /** + * Returns the desired size to fill the controlled stream's internal queue. It can be negative, if the queue is + * over-full. An underlying source ought to use this information to determine when and how to apply backpressure. + */ + get desiredSize(): number | null; + /** + * Closes the controlled readable stream. Consumers will still be able to read any previously-enqueued chunks from + * the stream, but once those are read, the stream will become closed. + */ + close(): void; + /** + * Enqueues the given chunk `chunk` in the controlled readable stream. + */ + enqueue(chunk: R): void; + /** + * Errors the controlled readable stream, making all future interactions with it fail with the given error `e`. + */ + error(e?: any): void; +} + +/** + * A default reader vended by a {@link ReadableStream}. + * + * @public + */ +export declare class ReadableStreamDefaultReader { + constructor(stream: ReadableStream); + /** + * Returns a promise that will be fulfilled when the stream becomes closed, + * or rejected if the stream ever errors or the reader's lock is released before the stream finishes closing. + */ + get closed(): Promise; + /** + * If the reader is active, behaves the same as {@link ReadableStream.cancel | stream.cancel(reason)}. + */ + cancel(reason?: any): Promise; + /** + * Returns a promise that allows access to the next chunk from the stream's internal queue, if available. + * + * If reading a chunk causes the queue to become empty, more data will be pulled from the underlying source. + */ + read(): Promise>; + /** + * Releases the reader's lock on the corresponding stream. After the lock is released, the reader is no longer active. + * If the associated stream is errored when the lock is released, the reader will appear errored in the same way + * from now on; otherwise, the reader will appear closed. + * + * A reader's lock cannot be released while it still has a pending read request, i.e., if a promise returned by + * the reader's {@link ReadableStreamDefaultReader.read | read()} method has not yet been settled. Attempting to + * do so will throw a `TypeError` and leave the reader locked to the stream. + */ + releaseLock(): void; +} + +/** + * A common interface for a `ReadableStreamDefaultReader` implementation. + * + * @public + */ +export declare interface ReadableStreamDefaultReaderLike { + readonly closed: Promise; + cancel(reason?: any): Promise; + read(): Promise>; + releaseLock(): void; +} + +/** + * A result returned by {@link ReadableStreamDefaultReader.read}. + * + * @public + */ +export declare type ReadableStreamDefaultReadResult = { + done: false; + value: T; +} | { + done: true; + value?: undefined; +}; + +/** + * Options for {@link ReadableStream.values | async iterating} a stream. + * + * @public + */ +export declare interface ReadableStreamIteratorOptions { + preventCancel?: boolean; +} + +/** + * A common interface for a `ReadadableStream` implementation. + * + * @public + */ +export declare interface ReadableStreamLike { + readonly locked: boolean; + getReader(): ReadableStreamDefaultReaderLike; +} + +/** + * A pair of a {@link ReadableStream | readable stream} and {@link WritableStream | writable stream} that can be passed + * to {@link ReadableStream.pipeThrough}. + * + * @public + */ +export declare interface ReadableWritablePair { + readable: ReadableStream; + writable: WritableStream; +} + +/** + * Options for {@link ReadableStream.pipeTo | piping} a stream. + * + * @public + */ +export declare interface StreamPipeOptions { + /** + * If set to true, {@link ReadableStream.pipeTo} will not abort the writable stream if the readable stream errors. + */ + preventAbort?: boolean; + /** + * If set to true, {@link ReadableStream.pipeTo} will not cancel the readable stream if the writable stream closes + * or errors. + */ + preventCancel?: boolean; + /** + * If set to true, {@link ReadableStream.pipeTo} will not close the writable stream if the readable stream closes. + */ + preventClose?: boolean; + /** + * Can be set to an {@link AbortSignal} to allow aborting an ongoing pipe operation via the corresponding + * `AbortController`. In this case, the source readable stream will be canceled, and the destination writable stream + * aborted, unless the respective options `preventCancel` or `preventAbort` are set. + */ + signal?: AbortSignal; +} + +/** + * A transformer for constructing a {@link TransformStream}. + * + * @public + */ +export declare interface Transformer { + /** + * A function that is called immediately during creation of the {@link TransformStream}. + */ + start?: TransformerStartCallback; + /** + * A function called when a new chunk originally written to the writable side is ready to be transformed. + */ + transform?: TransformerTransformCallback; + /** + * A function called after all chunks written to the writable side have been transformed by successfully passing + * through {@link Transformer.transform | transform()}, and the writable side is about to be closed. + */ + flush?: TransformerFlushCallback; + /** + * A function called when the readable side is cancelled, or when the writable side is aborted. + */ + cancel?: TransformerCancelCallback; + readableType?: undefined; + writableType?: undefined; +} + +/** @public */ +export declare type TransformerCancelCallback = (reason: any) => void | PromiseLike; + +/** @public */ +export declare type TransformerFlushCallback = (controller: TransformStreamDefaultController) => void | PromiseLike; + +/** @public */ +export declare type TransformerStartCallback = (controller: TransformStreamDefaultController) => void | PromiseLike; + +/** @public */ +export declare type TransformerTransformCallback = (chunk: I, controller: TransformStreamDefaultController) => void | PromiseLike; + +/** + * A transform stream consists of a pair of streams: a {@link WritableStream | writable stream}, + * known as its writable side, and a {@link ReadableStream | readable stream}, known as its readable side. + * In a manner specific to the transform stream in question, writes to the writable side result in new data being + * made available for reading from the readable side. + * + * @public + */ +export declare class TransformStream { + constructor(transformer?: Transformer, writableStrategy?: QueuingStrategy, readableStrategy?: QueuingStrategy); + /** + * The readable side of the transform stream. + */ + get readable(): ReadableStream; + /** + * The writable side of the transform stream. + */ + get writable(): WritableStream; +} + +/** + * Allows control of the {@link ReadableStream} and {@link WritableStream} of the associated {@link TransformStream}. + * + * @public + */ +export declare class TransformStreamDefaultController { + private constructor(); + /** + * Returns the desired size to fill the readable side’s internal queue. It can be negative, if the queue is over-full. + */ + get desiredSize(): number | null; + /** + * Enqueues the given chunk `chunk` in the readable side of the controlled transform stream. + */ + enqueue(chunk: O): void; + /** + * Errors both the readable side and the writable side of the controlled transform stream, making all future + * interactions with it fail with the given error `e`. Any chunks queued for transformation will be discarded. + */ + error(reason?: any): void; + /** + * Closes the readable side and errors the writable side of the controlled transform stream. This is useful when the + * transformer only needs to consume a portion of the chunks written to the writable side. + */ + terminate(): void; +} + +/** + * An underlying byte source for constructing a {@link ReadableStream}. + * + * @public + */ +export declare interface UnderlyingByteSource { + /** + * {@inheritDoc UnderlyingSource.start} + */ + start?: UnderlyingByteSourceStartCallback; + /** + * {@inheritDoc UnderlyingSource.pull} + */ + pull?: UnderlyingByteSourcePullCallback; + /** + * {@inheritDoc UnderlyingSource.cancel} + */ + cancel?: UnderlyingSourceCancelCallback; + /** + * Can be set to "bytes" to signal that the constructed {@link ReadableStream} is a readable byte stream. + * This ensures that the resulting {@link ReadableStream} will successfully be able to vend BYOB readers via its + * {@link ReadableStream.(getReader:1) | getReader()} method. + * It also affects the controller argument passed to the {@link UnderlyingByteSource.start | start()} + * and {@link UnderlyingByteSource.pull | pull()} methods. + */ + type: 'bytes'; + /** + * Can be set to a positive integer to cause the implementation to automatically allocate buffers for the + * underlying source code to write into. In this case, when a consumer is using a default reader, the stream + * implementation will automatically allocate an ArrayBuffer of the given size, so that + * {@link ReadableByteStreamController.byobRequest | controller.byobRequest} is always present, + * as if the consumer was using a BYOB reader. + */ + autoAllocateChunkSize?: number; +} + +/** @public */ +export declare type UnderlyingByteSourcePullCallback = (controller: ReadableByteStreamController) => void | PromiseLike; + +/** @public */ +export declare type UnderlyingByteSourceStartCallback = (controller: ReadableByteStreamController) => void | PromiseLike; + +/** + * An underlying sink for constructing a {@link WritableStream}. + * + * @public + */ +export declare interface UnderlyingSink { + /** + * A function that is called immediately during creation of the {@link WritableStream}. + */ + start?: UnderlyingSinkStartCallback; + /** + * A function that is called when a new chunk of data is ready to be written to the underlying sink. The stream + * implementation guarantees that this function will be called only after previous writes have succeeded, and never + * before {@link UnderlyingSink.start | start()} has succeeded or after {@link UnderlyingSink.close | close()} or + * {@link UnderlyingSink.abort | abort()} have been called. + * + * This function is used to actually send the data to the resource presented by the underlying sink, for example by + * calling a lower-level API. + */ + write?: UnderlyingSinkWriteCallback; + /** + * A function that is called after the producer signals, via + * {@link WritableStreamDefaultWriter.close | writer.close()}, that they are done writing chunks to the stream, and + * subsequently all queued-up writes have successfully completed. + * + * This function can perform any actions necessary to finalize or flush writes to the underlying sink, and release + * access to any held resources. + */ + close?: UnderlyingSinkCloseCallback; + /** + * A function that is called after the producer signals, via {@link WritableStream.abort | stream.abort()} or + * {@link WritableStreamDefaultWriter.abort | writer.abort()}, that they wish to abort the stream. It takes as its + * argument the same value as was passed to those methods by the producer. + * + * Writable streams can additionally be aborted under certain conditions during piping; see the definition of the + * {@link ReadableStream.pipeTo | pipeTo()} method for more details. + * + * This function can clean up any held resources, much like {@link UnderlyingSink.close | close()}, but perhaps with + * some custom handling. + */ + abort?: UnderlyingSinkAbortCallback; + type?: undefined; +} + +/** @public */ +export declare type UnderlyingSinkAbortCallback = (reason: any) => void | PromiseLike; + +/** @public */ +export declare type UnderlyingSinkCloseCallback = () => void | PromiseLike; + +/** @public */ +export declare type UnderlyingSinkStartCallback = (controller: WritableStreamDefaultController) => void | PromiseLike; + +/** @public */ +export declare type UnderlyingSinkWriteCallback = (chunk: W, controller: WritableStreamDefaultController) => void | PromiseLike; + +/** + * An underlying source for constructing a {@link ReadableStream}. + * + * @public + */ +export declare interface UnderlyingSource { + /** + * A function that is called immediately during creation of the {@link ReadableStream}. + */ + start?: UnderlyingSourceStartCallback; + /** + * A function that is called whenever the stream’s internal queue of chunks becomes not full, + * i.e. whenever the queue’s desired size becomes positive. Generally, it will be called repeatedly + * until the queue reaches its high water mark (i.e. until the desired size becomes non-positive). + */ + pull?: UnderlyingSourcePullCallback; + /** + * A function that is called whenever the consumer cancels the stream, via + * {@link ReadableStream.cancel | stream.cancel()}, + * {@link ReadableStreamDefaultReader.cancel | defaultReader.cancel()}, or + * {@link ReadableStreamBYOBReader.cancel | byobReader.cancel()}. + * It takes as its argument the same value as was passed to those methods by the consumer. + */ + cancel?: UnderlyingSourceCancelCallback; + type?: undefined; +} + +/** @public */ +export declare type UnderlyingSourceCancelCallback = (reason: any) => void | PromiseLike; + +/** @public */ +export declare type UnderlyingSourcePullCallback = (controller: ReadableStreamDefaultController) => void | PromiseLike; + +/** @public */ +export declare type UnderlyingSourceStartCallback = (controller: ReadableStreamDefaultController) => void | PromiseLike; + +/** + * A writable stream represents a destination for data, into which you can write. + * + * @public + */ +export declare class WritableStream { + constructor(underlyingSink?: UnderlyingSink, strategy?: QueuingStrategy); + /** + * Returns whether or not the writable stream is locked to a writer. + */ + get locked(): boolean; + /** + * Aborts the stream, signaling that the producer can no longer successfully write to the stream and it is to be + * immediately moved to an errored state, with any queued-up writes discarded. This will also execute any abort + * mechanism of the underlying sink. + * + * The returned promise will fulfill if the stream shuts down successfully, or reject if the underlying sink signaled + * that there was an error doing so. Additionally, it will reject with a `TypeError` (without attempting to cancel + * the stream) if the stream is currently locked. + */ + abort(reason?: any): Promise; + /** + * Closes the stream. The underlying sink will finish processing any previously-written chunks, before invoking its + * close behavior. During this time any further attempts to write will fail (without erroring the stream). + * + * The method returns a promise that will fulfill if all remaining chunks are successfully written and the stream + * successfully closes, or rejects if an error is encountered during this process. Additionally, it will reject with + * a `TypeError` (without attempting to cancel the stream) if the stream is currently locked. + */ + close(): Promise; + /** + * Creates a {@link WritableStreamDefaultWriter | writer} and locks the stream to the new writer. While the stream + * is locked, no other writer can be acquired until this one is released. + * + * This functionality is especially useful for creating abstractions that desire the ability to write to a stream + * without interruption or interleaving. By getting a writer for the stream, you can ensure nobody else can write at + * the same time, which would cause the resulting written data to be unpredictable and probably useless. + */ + getWriter(): WritableStreamDefaultWriter; +} + +/** + * Allows control of a {@link WritableStream | writable stream}'s state and internal queue. + * + * @public + */ +export declare class WritableStreamDefaultController { + private constructor(); + /** + * The reason which was passed to `WritableStream.abort(reason)` when the stream was aborted. + * + * @deprecated + * This property has been removed from the specification, see https://github.com/whatwg/streams/pull/1177. + * Use {@link WritableStreamDefaultController.signal}'s `reason` instead. + */ + get abortReason(): any; + /** + * An `AbortSignal` that can be used to abort the pending write or close operation when the stream is aborted. + */ + get signal(): AbortSignal; + /** + * Closes the controlled writable stream, making all future interactions with it fail with the given error `e`. + * + * This method is rarely used, since usually it suffices to return a rejected promise from one of the underlying + * sink's methods. However, it can be useful for suddenly shutting down a stream in response to an event outside the + * normal lifecycle of interactions with the underlying sink. + */ + error(e?: any): void; +} + +/** + * A default writer vended by a {@link WritableStream}. + * + * @public + */ +export declare class WritableStreamDefaultWriter { + constructor(stream: WritableStream); + /** + * Returns a promise that will be fulfilled when the stream becomes closed, or rejected if the stream ever errors or + * the writer’s lock is released before the stream finishes closing. + */ + get closed(): Promise; + /** + * Returns the desired size to fill the stream’s internal queue. It can be negative, if the queue is over-full. + * A producer can use this information to determine the right amount of data to write. + * + * It will be `null` if the stream cannot be successfully written to (due to either being errored, or having an abort + * queued up). It will return zero if the stream is closed. And the getter will throw an exception if invoked when + * the writer’s lock is released. + */ + get desiredSize(): number | null; + /** + * Returns a promise that will be fulfilled when the desired size to fill the stream’s internal queue transitions + * from non-positive to positive, signaling that it is no longer applying backpressure. Once the desired size dips + * back to zero or below, the getter will return a new promise that stays pending until the next transition. + * + * If the stream becomes errored or aborted, or the writer’s lock is released, the returned promise will become + * rejected. + */ + get ready(): Promise; + /** + * If the reader is active, behaves the same as {@link WritableStream.abort | stream.abort(reason)}. + */ + abort(reason?: any): Promise; + /** + * If the reader is active, behaves the same as {@link WritableStream.close | stream.close()}. + */ + close(): Promise; + /** + * Releases the writer’s lock on the corresponding stream. After the lock is released, the writer is no longer active. + * If the associated stream is errored when the lock is released, the writer will appear errored in the same way from + * now on; otherwise, the writer will appear closed. + * + * Note that the lock can still be released even if some ongoing writes have not yet finished (i.e. even if the + * promises returned from previous calls to {@link WritableStreamDefaultWriter.write | write()} have not yet settled). + * It’s not necessary to hold the lock on the writer for the duration of the write; the lock instead simply prevents + * other producers from writing in an interleaved manner. + */ + releaseLock(): void; + /** + * Writes the given chunk to the writable stream, by waiting until any previous writes have finished successfully, + * and then sending the chunk to the underlying sink's {@link UnderlyingSink.write | write()} method. It will return + * a promise that fulfills with undefined upon a successful write, or rejects if the write fails or stream becomes + * errored before the writing process is initiated. + * + * Note that what "success" means is up to the underlying sink; it might indicate simply that the chunk has been + * accepted, and not necessarily that it is safely saved to its ultimate destination. + */ + write(chunk: W): Promise; +} + +export { } diff --git a/node_modules/web-streams-polyfill/dist/types/tsdoc-metadata.json b/node_modules/web-streams-polyfill/dist/types/tsdoc-metadata.json new file mode 100644 index 0000000..b18fd2a --- /dev/null +++ b/node_modules/web-streams-polyfill/dist/types/tsdoc-metadata.json @@ -0,0 +1,11 @@ +// This file is read by tools that parse documentation comments conforming to the TSDoc standard. +// It should be published with your NPM package. It should not be tracked by Git. +{ + "tsdocVersion": "0.12", + "toolPackages": [ + { + "packageName": "@microsoft/api-extractor", + "packageVersion": "7.39.1" + } + ] +} diff --git a/node_modules/web-streams-polyfill/es2018/package.json b/node_modules/web-streams-polyfill/es2018/package.json new file mode 100644 index 0000000..97f8fb1 --- /dev/null +++ b/node_modules/web-streams-polyfill/es2018/package.json @@ -0,0 +1,14 @@ +{ + "name": "web-streams-polyfill-es2018", + "main": "../dist/polyfill.es2018", + "browser": "../dist/polyfill.es2018.min.js", + "module": "../dist/polyfill.es2018.mjs", + "types": "../dist/types/polyfill.d.ts", + "typesVersions": { + ">=3.6": { + "../dist/types/*": [ + "../dist/types/ts3.6/*" + ] + } + } +} diff --git a/node_modules/web-streams-polyfill/es6/package.json b/node_modules/web-streams-polyfill/es6/package.json new file mode 100644 index 0000000..ca3909b --- /dev/null +++ b/node_modules/web-streams-polyfill/es6/package.json @@ -0,0 +1,14 @@ +{ + "name": "web-streams-polyfill-es6", + "main": "../dist/polyfill.es6", + "browser": "../dist/polyfill.es6.min.js", + "module": "../dist/polyfill.es6.mjs", + "types": "../dist/types/polyfill.d.ts", + "typesVersions": { + ">=3.6": { + "../dist/types/*": [ + "../dist/types/ts3.6/*" + ] + } + } +} diff --git a/node_modules/web-streams-polyfill/package.json b/node_modules/web-streams-polyfill/package.json new file mode 100644 index 0000000..fa7d164 --- /dev/null +++ b/node_modules/web-streams-polyfill/package.json @@ -0,0 +1,83 @@ +{ + "name": "web-streams-polyfill", + "version": "3.3.3", + "description": "Web Streams, based on the WHATWG spec reference implementation", + "main": "dist/polyfill", + "browser": "dist/polyfill.min.js", + "module": "dist/polyfill.mjs", + "types": "dist/types/polyfill.d.ts", + "typesVersions": { + ">=3.6": { + "dist/types/*": [ + "dist/types/ts3.6/*" + ] + } + }, + "scripts": { + "test": "npm run test:types && npm run test:unit && npm run test:wpt", + "test:wpt": "npm run test:wpt:node && npm run test:wpt:chromium && npm run test:wpt:firefox", + "test:wpt:node": "node --expose_gc ./test/wpt/node/run.js", + "test:wpt:chromium": "node ./test/wpt/browser/run.js --browser chromium", + "test:wpt:firefox": "node ./test/wpt/browser/run.js --browser firefox", + "test:types": "tsc -p ./test/types/tsconfig.json", + "test:unit": "jasmine --config=test/unit/jasmine.json", + "lint": "eslint \"src/**/*.ts\"", + "build": "npm run build:bundle && npm run build:types", + "build:bundle": "rollup -c", + "build:types": "tsc --project . --emitDeclarationOnly --declarationDir ./lib && api-extractor run", + "accept:types": "npm run build:types -- --local", + "postbuild:types": "downlevel-dts ./dist/types/ts3.6/ ./dist/types/ --to=3.5 && node ./build/downlevel-dts.js", + "prepare": "npm run build" + }, + "files": [ + "dist", + "es6", + "es2018", + "ponyfill" + ], + "engines": { + "node": ">= 8" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/MattiasBuelens/web-streams-polyfill.git" + }, + "keywords": [ + "streams", + "whatwg", + "polyfill" + ], + "author": "Mattias Buelens ", + "contributors": [ + "Diwank Singh " + ], + "license": "MIT", + "bugs": { + "url": "https://github.com/MattiasBuelens/web-streams-polyfill/issues" + }, + "homepage": "https://github.com/MattiasBuelens/web-streams-polyfill#readme", + "devDependencies": { + "@microsoft/api-extractor": "^7.39.1", + "@rollup/plugin-inject": "^5.0.5", + "@rollup/plugin-replace": "^5.0.5", + "@rollup/plugin-strip": "^3.0.4", + "@rollup/plugin-terser": "^0.4.4", + "@rollup/plugin-typescript": "^11.1.5", + "@types/node": "^18.19.4", + "@typescript-eslint/eslint-plugin": "^6.17.0", + "@typescript-eslint/parser": "^6.17.0", + "@ungap/promise-all-settled": "^1.1.2", + "downlevel-dts": "^0.11.0", + "eslint": "^8.56.0", + "jasmine": "^5.1.0", + "micromatch": "^4.0.5", + "minimist": "^1.2.5", + "playwright": "^1.14.1", + "recursive-readdir": "^2.2.2", + "rollup": "^4.9.2", + "ts-morph": "^10.0.2", + "tslib": "^2.6.2", + "typescript": "^5.3.3", + "wpt-runner": "^5.0.0" + } +} diff --git a/node_modules/web-streams-polyfill/ponyfill/es2018/package.json b/node_modules/web-streams-polyfill/ponyfill/es2018/package.json new file mode 100644 index 0000000..26816ac --- /dev/null +++ b/node_modules/web-streams-polyfill/ponyfill/es2018/package.json @@ -0,0 +1,13 @@ +{ + "name": "web-streams-ponyfill-es2018", + "main": "../../dist/ponyfill.es2018", + "module": "../../dist/ponyfill.es2018.mjs", + "types": "../../dist/types/ponyfill.d.ts", + "typesVersions": { + ">=3.6": { + "../../dist/types/*": [ + "../../dist/types/ts3.6/*" + ] + } + } +} diff --git a/node_modules/web-streams-polyfill/ponyfill/es6/package.json b/node_modules/web-streams-polyfill/ponyfill/es6/package.json new file mode 100644 index 0000000..b54520d --- /dev/null +++ b/node_modules/web-streams-polyfill/ponyfill/es6/package.json @@ -0,0 +1,13 @@ +{ + "name": "web-streams-ponyfill-es6", + "main": "../../dist/ponyfill.es6", + "module": "../../dist/ponyfill.es6.mjs", + "types": "../../dist/types/ponyfill.d.ts", + "typesVersions": { + ">=3.6": { + "../../dist/types/*": [ + "../../dist/types/ts3.6/*" + ] + } + } +} diff --git a/node_modules/web-streams-polyfill/ponyfill/package.json b/node_modules/web-streams-polyfill/ponyfill/package.json new file mode 100644 index 0000000..36e9fbe --- /dev/null +++ b/node_modules/web-streams-polyfill/ponyfill/package.json @@ -0,0 +1,13 @@ +{ + "name": "web-streams-ponyfill", + "main": "../dist/ponyfill", + "module": "../dist/ponyfill.mjs", + "types": "../dist/types/ponyfill.d.ts", + "typesVersions": { + ">=3.6": { + "../dist/types/*": [ + "../dist/types/ts3.6/*" + ] + } + } +} diff --git a/package-lock.json b/package-lock.json index 03a79e3..6e4f1a4 100644 --- a/package-lock.json +++ b/package-lock.json @@ -4,6 +4,10 @@ "requires": true, "packages": { "": { + "dependencies": { + "axios": "^1.10.0", + 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