@hadesz/monitor/lib/node_modules/web-streams-polyfill/dist/ponyfill.es6.mjs.map

A complete server monitoring system with agents, server and dashboard

{"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<T>(executor: (\n  resolve: (value: T | PromiseLike<T>) => void,\n  reject: (reason?: any) => void\n) => void): Promise<T> {\n  return new originalPromise(executor);\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-resolved-with\nexport function promiseResolvedWith<T>(value: T | PromiseLike<T>): Promise<T> {\n  return newPromise(resolve => resolve(value));\n}\n\n// https://webidl.spec.whatwg.org/#a-promise-rejected-with\nexport function promiseRejectedWith<T = never>(reason: any): Promise<T> {\n  return originalPromiseReject(reason);\n}\n\nexport function PerformPromiseThen<T, TResult1 = T, TResult2 = never>(\n  promise: Promise<T>,\n  onFulfilled?: (value: T) => TResult1 | PromiseLike<TResult1>,\n  onRejected?: (reason: any) => TResult2 | PromiseLike<TResult2>): Promise<TResult1 | TResult2> {\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<TResult1 | TResult2>;\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<T>(\n  promise: Promise<T>,\n  onFulfilled?: (value: T) => null | PromiseLike<null>,\n  onRejected?: (reason: any) => null | PromiseLike<null>): void {\n  PerformPromiseThen(\n    PerformPromiseThen(promise, onFulfilled, onRejected),\n    undefined,\n    rethrowAssertionErrorRejection\n  );\n}\n\nexport function uponFulfillment<T>(promise: Promise<T>, onFulfilled: (value: T) => null | PromiseLike<null>): void {\n  uponPromise(promise, onFulfilled);\n}\n\nexport function uponRejection(promise: Promise<unknown>, onRejected: (reason: any) => null | PromiseLike<null>): void {\n  uponPromise(promise, undefined, onRejected);\n}\n\nexport function transformPromiseWith<T, TResult1 = T, TResult2 = never>(\n  promise: Promise<T>,\n  fulfillmentHandler?: (value: T) => TResult1 | PromiseLike<TResult1>,\n  rejectionHandler?: (reason: any) => TResult2 | PromiseLike<TResult2>): Promise<TResult1 | TResult2> {\n  return PerformPromiseThen(promise, fulfillmentHandler, rejectionHandler);\n}\n\nexport function setPromiseIsHandledToTrue(promise: Promise<unknown>): 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<T, A extends any[], R>(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<T, A extends any[], R>(F: (this: T, ...fnArgs: A) => R | PromiseLike<R>,\n                                                   V: T,\n                                                   args: A): Promise<R> {\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<T> {\n  _elements: T[];\n  _next: Node<T> | 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<T> {\n  private _front: Node<T>;\n  private _back: Node<T>;\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<R>(reader: ReadableStreamReader<R>, stream: ReadableStream<R>) {\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<any>, reason: any): Promise<undefined> {\n  const stream = reader._ownerReadableStream;\n  assert(stream !== undefined);\n  return ReadableStreamCancel(stream, reason);\n}\n\nexport function ReadableStreamReaderGenericRelease(reader: ReadableStreamReader<any>) {\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<any>) {\n  reader._closedPromise = newPromise((resolve, reject) => {\n    reader._closedPromise_resolve = resolve;\n    reader._closedPromise_reject = reject;\n  });\n}\n\nexport function defaultReaderClosedPromiseInitializeAsRejected(reader: ReadableStreamReader<any>, reason: any) {\n  defaultReaderClosedPromiseInitialize(reader);\n  defaultReaderClosedPromiseReject(reader, reason);\n}\n\nexport function defaultReaderClosedPromiseInitializeAsResolved(reader: ReadableStreamReader<any>) {\n  defaultReaderClosedPromiseInitialize(reader);\n  defaultReaderClosedPromiseResolve(reader);\n}\n\nexport function defaultReaderClosedPromiseReject(reader: ReadableStreamReader<any>, 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<any>, 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<any>) {\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","/// <reference lib=\"es2015.core\" />\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","/// <reference lib=\"es2015.core\" />\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<T>(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<T>(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<T> = {\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<R>(stream: ReadableStream): ReadableStreamDefaultReader<R> {\n  return new ReadableStreamDefaultReader(stream);\n}\n\n// ReadableStream API exposed for controllers.\n\nexport function ReadableStreamAddReadRequest<R>(stream: ReadableStream<R>,\n                                                readRequest: ReadRequest<R>): void {\n  assert(IsReadableStreamDefaultReader(stream._reader));\n  assert(stream._state === 'readable');\n\n  (stream._reader! as ReadableStreamDefaultReader<R>)._readRequests.push(readRequest);\n}\n\nexport function ReadableStreamFulfillReadRequest<R>(stream: ReadableStream<R>, chunk: R | undefined, done: boolean) {\n  const reader = stream._reader as ReadableStreamDefaultReader<R>;\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<R>(stream: ReadableStream<R>): number {\n  return (stream._reader as ReadableStreamDefaultReader<R>)._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<R> {\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<R = any> {\n  /** @internal */\n  _ownerReadableStream!: ReadableStream<R>;\n  /** @internal */\n  _closedPromise!: Promise<undefined>;\n  /** @internal */\n  _closedPromise_resolve?: (value?: undefined) => void;\n  /** @internal */\n  _closedPromise_reject?: (reason: any) => void;\n  /** @internal */\n  _readRequests: SimpleQueue<ReadRequest<R>>;\n\n  constructor(stream: ReadableStream<R>) {\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<undefined> {\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<void> {\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<ReadableStreamDefaultReadResult<R>> {\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<R>) => void;\n    let rejectPromise!: (reason: any) => void;\n    const promise = newPromise<ReadableStreamDefaultReadResult<R>>((resolve, reject) => {\n      resolvePromise = resolve;\n      rejectPromise = reject;\n    });\n    const readRequest: ReadRequest<R> = {\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<R = any>(x: any): x is ReadableStreamDefaultReader<R> {\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<R>(reader: ReadableStreamDefaultReader<R>,\n                                                   readRequest: ReadRequest<R>): 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<any>);\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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(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<T>(value: T, options: { transfer: ArrayBuffer[] }): T;\n}\n\nexport function CreateArrayFromList<T extends any[]>(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<T> = {\n  [P in keyof T]: T[P] extends Function | undefined ? P : never;\n}[keyof T];\n\nexport function GetMethod<T, K extends MethodName<T>>(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<T> {\n  iterator: Iterator<T>,\n  nextMethod: Iterator<T>['next'],\n  done: boolean;\n}\n\nexport interface AsyncIteratorRecord<T> {\n  iterator: AsyncIterator<T>,\n  nextMethod: AsyncIterator<T>['next'],\n  done: boolean;\n}\n\nexport type SyncOrAsyncIteratorRecord<T> = SyncIteratorRecord<T> | AsyncIteratorRecord<T>;\n\nexport function CreateAsyncFromSyncIterator<T>(syncIteratorRecord: SyncIteratorRecord<T>): AsyncIteratorRecord<T> {\n  // Instead of re-implementing CreateAsyncFromSyncIterator and %