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How to use defaultWriterClosedPromiseInitializeAsRejected method in wpt

Best JavaScript code snippet using wpt

writable-stream.ts

Source:writable-stream.ts

...412    } else {413      assert(state === 'errored');414      const storedError = stream._storedError;415      defaultWriterReadyPromiseInitializeAsRejected(this, storedError);416      defaultWriterClosedPromiseInitializeAsRejected(this, storedError);417    }418  }419  get closed(): Promise<void> {420    if (IsWritableStreamDefaultWriter(this) === false) {421      return Promise.reject(defaultWriterBrandCheckException('closed'));422    }423    return this._closedPromise;424  }425  get desiredSize(): number | null {426    if (IsWritableStreamDefaultWriter(this) === false) {427      throw defaultWriterBrandCheckException('desiredSize');428    }429    if (this._ownerWritableStream === undefined) {430      throw defaultWriterLockException('desiredSize');431    }432    return WritableStreamDefaultWriterGetDesiredSize(this);433  }434  get ready(): Promise<void> {435    if (IsWritableStreamDefaultWriter(this) === false) {436      return Promise.reject(defaultWriterBrandCheckException('ready'));437    }438    return this._readyPromise;439  }440  abort(reason: any): Promise<void> {441    if (IsWritableStreamDefaultWriter(this) === false) {442      return Promise.reject(defaultWriterBrandCheckException('abort'));443    }444    if (this._ownerWritableStream === undefined) {445      return Promise.reject(defaultWriterLockException('abort'));446    }447    return WritableStreamDefaultWriterAbort(this, reason);448  }449  close(): Promise<void> {450    if (IsWritableStreamDefaultWriter(this) === false) {451      return Promise.reject(defaultWriterBrandCheckException('close'));452    }453    const stream = this._ownerWritableStream;454    if (stream === undefined) {455      return Promise.reject(defaultWriterLockException('close'));456    }457    if (WritableStreamCloseQueuedOrInFlight(stream) === true) {458      return Promise.reject(new TypeError('cannot close an already-closing stream'));459    }460    return WritableStreamDefaultWriterClose(this);461  }462  releaseLock(): void {463    if (IsWritableStreamDefaultWriter(this) === false) {464      throw defaultWriterBrandCheckException('releaseLock');465    }466    const stream = this._ownerWritableStream;467    if (stream === undefined) {468      return;469    }470    assert(stream._writer !== undefined);471    WritableStreamDefaultWriterRelease(this);472  }473  write(chunk: W): Promise<void> {474    if (IsWritableStreamDefaultWriter(this) === false) {475      return Promise.reject(defaultWriterBrandCheckException('write'));476    }477    if (this._ownerWritableStream === undefined) {478      return Promise.reject(defaultWriterLockException('write to'));479    }480    return WritableStreamDefaultWriterWrite(this, chunk);481  }482}483// Abstract operations for the WritableStreamDefaultWriter.484function IsWritableStreamDefaultWriter<W>(x: any): x is WritableStreamDefaultWriter<W> {485  if (!typeIsObject(x)) {486    return false;487  }488  if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {489    return false;490  }491  return true;492}493// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.494function WritableStreamDefaultWriterAbort(writer: WritableStreamDefaultWriter<any>, reason: any) {495  const stream = writer._ownerWritableStream;496  assert(stream !== undefined);497  return WritableStreamAbort(stream, reason);498}499function WritableStreamDefaultWriterClose(writer: WritableStreamDefaultWriter<any>): Promise<void> {500  const stream = writer._ownerWritableStream;501  assert(stream !== undefined);502  const state = stream._state;503  if (state === 'closed' || state === 'errored') {504    return Promise.reject(new TypeError(505      `The stream (in ${state} state) is not in the writable state and cannot be closed`));506  }507  assert(state === 'writable' || state === 'erroring');508  assert(WritableStreamCloseQueuedOrInFlight(stream) === false);509  const promise = new Promise<void>((resolve, reject) => {510    const closeRequest: CloseRequest = {511      _resolve: resolve,512      _reject: reject513    };514    stream._closeRequest = closeRequest;515  });516  if (stream._backpressure === true && state === 'writable') {517    defaultWriterReadyPromiseResolve(writer);518  }519  WritableStreamDefaultControllerClose(stream._writableStreamController);520  return promise;521}522function WritableStreamDefaultWriterCloseWithErrorPropagation(writer: WritableStreamDefaultWriter<any>): Promise<void> {523  const stream = writer._ownerWritableStream;524  assert(stream !== undefined);525  const state = stream._state;526  if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {527    return Promise.resolve();528  }529  if (state === 'errored') {530    return Promise.reject(stream._storedError);531  }532  assert(state === 'writable' || state === 'erroring');533  return WritableStreamDefaultWriterClose(writer);534}535function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer: WritableStreamDefaultWriter<any>, error: any) {536  if (writer._closedPromiseState === 'pending') {537    defaultWriterClosedPromiseReject(writer, error);538  } else {539    defaultWriterClosedPromiseResetToRejected(writer, error);540  }541}542function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer: WritableStreamDefaultWriter<any>, error: any) {543  if (writer._readyPromiseState === 'pending') {544    defaultWriterReadyPromiseReject(writer, error);545  } else {546    defaultWriterReadyPromiseResetToRejected(writer, error);547  }548}549function WritableStreamDefaultWriterGetDesiredSize(writer: WritableStreamDefaultWriter<any>): number | null {550  const stream = writer._ownerWritableStream;551  const state = stream._state;552  if (state === 'errored' || state === 'erroring') {553    return null;554  }555  if (state === 'closed') {556    return 0;557  }558  return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);559}560function WritableStreamDefaultWriterRelease(writer: WritableStreamDefaultWriter<any>) {561  const stream = writer._ownerWritableStream;562  assert(stream !== undefined);563  assert(stream._writer === writer);564  const releasedError = new TypeError(565    'Writer was released and can no longer be used to monitor the stream\'s closedness');566  WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);567  // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not568  // rejected until afterwards. This means that simply testing state will not work.569  WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);570  stream._writer = undefined;571  writer._ownerWritableStream = undefined!;572}573function WritableStreamDefaultWriterWrite<W>(writer: WritableStreamDefaultWriter<W>, chunk: W): Promise<void> {574  const stream = writer._ownerWritableStream;575  assert(stream !== undefined);576  const controller = stream._writableStreamController;577  const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);578  if (stream !== writer._ownerWritableStream) {579    return Promise.reject(defaultWriterLockException('write to'));580  }581  const state = stream._state;582  if (state === 'errored') {583    return Promise.reject(stream._storedError);584  }585  if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {586    return Promise.reject(new TypeError('The stream is closing or closed and cannot be written to'));587  }588  if (state === 'erroring') {589    return Promise.reject(stream._storedError);590  }591  assert(state === 'writable');592  const promise = WritableStreamAddWriteRequest(stream);593  WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);594  return promise;595}596interface WriteRecord<W> {597  chunk: W;598}599type QueueRecord<W> = WriteRecord<W> | 'close';600export type WritableStreamDefaultControllerType = WritableStreamDefaultController<any>;601class WritableStreamDefaultController<W = any> {602  /** @internal */603  _controlledWritableStream!: WritableStream<W>;604  /** @internal */605  _queue!: SimpleQueue<QueuePair<QueueRecord<W>>>;606  /** @internal */607  _queueTotalSize!: number;608  /** @internal */609  _started!: boolean;610  /** @internal */611  _strategySizeAlgorithm!: QueuingStrategySizeCallback<W>;612  /** @internal */613  _strategyHWM!: number;614  /** @internal */615  _writeAlgorithm!: (chunk: W) => Promise<void>;616  /** @internal */617  _closeAlgorithm!: () => Promise<void>;618  /** @internal */619  _abortAlgorithm!: (reason: any) => Promise<void>;620  /** @internal */621  constructor() {622    throw new TypeError('WritableStreamDefaultController cannot be constructed explicitly');623  }624  error(e: any) {625    if (IsWritableStreamDefaultController(this) === false) {626      throw new TypeError(627        'WritableStreamDefaultController.prototype.error can only be used on a WritableStreamDefaultController');628    }629    const state = this._controlledWritableStream._state;630    if (state !== 'writable') {631      // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so632      // just treat it as a no-op.633      return;634    }635    WritableStreamDefaultControllerError(this, e);636  }637  /** @internal */638  [AbortSteps](reason: any) {639    const result = this._abortAlgorithm(reason);640    WritableStreamDefaultControllerClearAlgorithms(this);641    return result;642  }643  /** @internal */644  [ErrorSteps]() {645    ResetQueue(this);646  }647}648// Abstract operations implementing interface required by the WritableStream.649function IsWritableStreamDefaultController<W>(x: any): x is WritableStreamDefaultController<W> {650  if (!typeIsObject(x)) {651    return false;652  }653  if (!Object.prototype.hasOwnProperty.call(x, '_controlledWritableStream')) {654    return false;655  }656  return true;657}658function SetUpWritableStreamDefaultController<W>(stream: WritableStream<W>,659                                                 controller: WritableStreamDefaultController<W>,660                                                 startAlgorithm: () => void | PromiseLike<void>,661                                                 writeAlgorithm: (chunk: W) => Promise<void>,662                                                 closeAlgorithm: () => Promise<void>,663                                                 abortAlgorithm: (reason: any) => Promise<void>,664                                                 highWaterMark: number,665                                                 sizeAlgorithm: QueuingStrategySizeCallback<W>) {666  assert(IsWritableStream(stream) === true);667  assert(stream._writableStreamController === undefined);668  controller._controlledWritableStream = stream;669  stream._writableStreamController = controller;670  // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.671  controller._queue = undefined!;672  controller._queueTotalSize = undefined!;673  ResetQueue(controller);674  controller._started = false;675  controller._strategySizeAlgorithm = sizeAlgorithm;676  controller._strategyHWM = highWaterMark;677  controller._writeAlgorithm = writeAlgorithm;678  controller._closeAlgorithm = closeAlgorithm;679  controller._abortAlgorithm = abortAlgorithm;680  const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);681  WritableStreamUpdateBackpressure(stream, backpressure);682  const startResult = startAlgorithm();683  const startPromise = Promise.resolve(startResult);684  startPromise.then(685    () => {686      assert(stream._state === 'writable' || stream._state === 'erroring');687      controller._started = true;688      WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);689    },690    r => {691      assert(stream._state === 'writable' || stream._state === 'erroring');692      controller._started = true;693      WritableStreamDealWithRejection(stream, r);694    }695  ).catch(rethrowAssertionErrorRejection);696}697function SetUpWritableStreamDefaultControllerFromUnderlyingSink<W>(stream: WritableStream<W>,698                                                                   underlyingSink: UnderlyingSink<W>,699                                                                   highWaterMark: number,700                                                                   sizeAlgorithm: QueuingStrategySizeCallback<W>) {701  assert(underlyingSink !== undefined);702  const controller = Object.create(WritableStreamDefaultController.prototype);703  function startAlgorithm() {704    return InvokeOrNoop<typeof underlyingSink, 'start'>(underlyingSink, 'start', [controller]);705  }706  const writeAlgorithm = CreateAlgorithmFromUnderlyingMethod<typeof underlyingSink, 'write'>(707    underlyingSink, 'write', 1, [controller]708  );709  const closeAlgorithm = CreateAlgorithmFromUnderlyingMethod<typeof underlyingSink, 'close'>(710    underlyingSink, 'close', 0, []711  );712  const abortAlgorithm = CreateAlgorithmFromUnderlyingMethod<typeof underlyingSink, 'abort'>(713    underlyingSink, 'abort', 1, []714  );715  SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,716                                       abortAlgorithm, highWaterMark, sizeAlgorithm);717}718// ClearAlgorithms may be called twice. Erroring the same stream in multiple ways will often result in redundant calls.719function WritableStreamDefaultControllerClearAlgorithms(controller: WritableStreamDefaultController<any>) {720  controller._writeAlgorithm = undefined!;721  controller._closeAlgorithm = undefined!;722  controller._abortAlgorithm = undefined!;723  controller._strategySizeAlgorithm = undefined!;724}725function WritableStreamDefaultControllerClose(controller: WritableStreamDefaultController<any>) {726  EnqueueValueWithSize(controller, 'close', 0);727  WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);728}729function WritableStreamDefaultControllerGetChunkSize<W>(controller: WritableStreamDefaultController<W>,730                                                        chunk: W): number {731  try {732    return controller._strategySizeAlgorithm(chunk);733  } catch (chunkSizeE) {734    WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);735    return 1;736  }737}738function WritableStreamDefaultControllerGetDesiredSize(controller: WritableStreamDefaultController<any>): number {739  return controller._strategyHWM - controller._queueTotalSize;740}741function WritableStreamDefaultControllerWrite<W>(controller: WritableStreamDefaultController<W>,742                                                 chunk: W,743                                                 chunkSize: number) {744  const writeRecord = { chunk };745  try {746    EnqueueValueWithSize(controller, writeRecord, chunkSize);747  } catch (enqueueE) {748    WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);749    return;750  }751  const stream = controller._controlledWritableStream;752  if (WritableStreamCloseQueuedOrInFlight(stream) === false && stream._state === 'writable') {753    const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);754    WritableStreamUpdateBackpressure(stream, backpressure);755  }756  WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);757}758// Abstract operations for the WritableStreamDefaultController.759function WritableStreamDefaultControllerAdvanceQueueIfNeeded<W>(controller: WritableStreamDefaultController<W>) {760  const stream = controller._controlledWritableStream;761  if (controller._started === false) {762    return;763  }764  if (stream._inFlightWriteRequest !== undefined) {765    return;766  }767  const state = stream._state;768  assert(state !== 'closed' && state !== 'errored');769  if (state === 'erroring') {770    WritableStreamFinishErroring(stream);771    return;772  }773  if (controller._queue.length === 0) {774    return;775  }776  const writeRecord = PeekQueueValue(controller);777  if (writeRecord === 'close') {778    WritableStreamDefaultControllerProcessClose(controller);779  } else {780    WritableStreamDefaultControllerProcessWrite(controller, writeRecord.chunk);781  }782}783function WritableStreamDefaultControllerErrorIfNeeded(controller: WritableStreamDefaultController<any>, error: any) {784  if (controller._controlledWritableStream._state === 'writable') {785    WritableStreamDefaultControllerError(controller, error);786  }787}788function WritableStreamDefaultControllerProcessClose(controller: WritableStreamDefaultController<any>) {789  const stream = controller._controlledWritableStream;790  WritableStreamMarkCloseRequestInFlight(stream);791  DequeueValue(controller);792  assert(controller._queue.length === 0);793  const sinkClosePromise = controller._closeAlgorithm();794  WritableStreamDefaultControllerClearAlgorithms(controller);795  sinkClosePromise.then(796    () => {797      WritableStreamFinishInFlightClose(stream);798    },799    reason => {800      WritableStreamFinishInFlightCloseWithError(stream, reason);801    }802  ).catch(rethrowAssertionErrorRejection);803}804function WritableStreamDefaultControllerProcessWrite<W>(controller: WritableStreamDefaultController<W>, chunk: W) {805  const stream = controller._controlledWritableStream;806  WritableStreamMarkFirstWriteRequestInFlight(stream);807  const sinkWritePromise = controller._writeAlgorithm(chunk);808  sinkWritePromise.then(809    () => {810      WritableStreamFinishInFlightWrite(stream);811      const state = stream._state;812      assert(state === 'writable' || state === 'erroring');813      DequeueValue(controller);814      if (WritableStreamCloseQueuedOrInFlight(stream) === false && state === 'writable') {815        const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);816        WritableStreamUpdateBackpressure(stream, backpressure);817      }818      WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);819    },820    reason => {821      if (stream._state === 'writable') {822        WritableStreamDefaultControllerClearAlgorithms(controller);823      }824      WritableStreamFinishInFlightWriteWithError(stream, reason);825    }826  ).catch(rethrowAssertionErrorRejection);827}828function WritableStreamDefaultControllerGetBackpressure(controller: WritableStreamDefaultController<any>): boolean {829  const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);830  return desiredSize <= 0;831}832// A client of WritableStreamDefaultController may use these functions directly to bypass state check.833function WritableStreamDefaultControllerError(controller: WritableStreamDefaultController<any>, error: any) {834  const stream = controller._controlledWritableStream;835  assert(stream._state === 'writable');836  WritableStreamDefaultControllerClearAlgorithms(controller);837  WritableStreamStartErroring(stream, error);838}839// Helper functions for the WritableStream.840function streamBrandCheckException(name: string): TypeError {841  return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);842}843// Helper functions for the WritableStreamDefaultWriter.844function defaultWriterBrandCheckException(name: string): TypeError {845  return new TypeError(846    `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);847}848function defaultWriterLockException(name: string): TypeError {849  return new TypeError('Cannot ' + name + ' a stream using a released writer');850}851function defaultWriterClosedPromiseInitialize(writer: WritableStreamDefaultWriter<any>) {852  writer._closedPromise = new Promise((resolve, reject) => {853    writer._closedPromise_resolve = resolve;854    writer._closedPromise_reject = reject;855    writer._closedPromiseState = 'pending';856  });857}858function defaultWriterClosedPromiseInitializeAsRejected(writer: WritableStreamDefaultWriter<any>, reason: any) {859  defaultWriterClosedPromiseInitialize(writer);860  defaultWriterClosedPromiseReject(writer, reason);861}862function defaultWriterClosedPromiseInitializeAsResolved(writer: WritableStreamDefaultWriter<any>) {863  defaultWriterClosedPromiseInitialize(writer);864  defaultWriterClosedPromiseResolve(writer);865}866function defaultWriterClosedPromiseReject(writer: WritableStreamDefaultWriter<any>, reason: any) {867  assert(writer._closedPromise_resolve !== undefined);868  assert(writer._closedPromise_reject !== undefined);869  assert(writer._closedPromiseState === 'pending');870  writer._closedPromise.catch(() => {});871  writer._closedPromise_reject!(reason);872  writer._closedPromise_resolve = undefined;873  writer._closedPromise_reject = undefined;874  writer._closedPromiseState = 'rejected';875}876function defaultWriterClosedPromiseResetToRejected(writer: WritableStreamDefaultWriter<any>, reason: any) {877  assert(writer._closedPromise_resolve === undefined);878  assert(writer._closedPromise_reject === undefined);879  assert(writer._closedPromiseState !== 'pending');880  defaultWriterClosedPromiseInitializeAsRejected(writer, reason);881}882function defaultWriterClosedPromiseResolve(writer: WritableStreamDefaultWriter<any>) {883  assert(writer._closedPromise_resolve !== undefined);884  assert(writer._closedPromise_reject !== undefined);885  assert(writer._closedPromiseState === 'pending');886  writer._closedPromise_resolve!(undefined);887  writer._closedPromise_resolve = undefined;888  writer._closedPromise_reject = undefined;889  writer._closedPromiseState = 'resolved';890}891function defaultWriterReadyPromiseInitialize(writer: WritableStreamDefaultWriter<any>) {892  writer._readyPromise = new Promise((resolve, reject) => {893    writer._readyPromise_resolve = resolve;894    writer._readyPromise_reject = reject;...

writable-stream.js

Source:writable-stream.js

...164    } else if (state === 'closed') {165      defaultWriterClosedPromiseInitializeAsResolved(this);166    } else {167      assert(state === 'errored', 'state must be errored');168      defaultWriterClosedPromiseInitializeAsRejected(this, stream._storedError);169      this._closedPromise.catch(() => {});170    }171    if (state === 'writable' &&172        WritableStreamDefaultControllerGetBackpressure(stream._writableStreamController) === true) {173      defaultWriterReadyPromiseInitialize(this);174    } else {175      defaultWriterReadyPromiseInitializeAsResolved(this, undefined);176    }177  }178  get closed() {179    if (IsWritableStreamDefaultWriter(this) === false) {180      return Promise.reject(defaultWriterBrandCheckException('closed'));181    }182    return this._closedPromise;183  }184  get desiredSize() {185    if (IsWritableStreamDefaultWriter(this) === false) {186      throw defaultWriterBrandCheckException('desiredSize');187    }188    if (this._ownerWritableStream === undefined) {189      throw defaultWriterLockException('desiredSize');190    }191    return WritableStreamDefaultWriterGetDesiredSize(this);192  }193  get ready() {194    if (IsWritableStreamDefaultWriter(this) === false) {195      return Promise.reject(defaultWriterBrandCheckException('ready'));196    }197    return this._readyPromise;198  }199  abort(reason) {200    if (IsWritableStreamDefaultWriter(this) === false) {201      return Promise.reject(defaultWriterBrandCheckException('abort'));202    }203    if (this._ownerWritableStream === undefined) {204      return Promise.reject(defaultWriterLockException('abort'));205    }206    return WritableStreamDefaultWriterAbort(this, reason);207  }208  close() {209    if (IsWritableStreamDefaultWriter(this) === false) {210      return Promise.reject(defaultWriterBrandCheckException('close'));211    }212    const stream = this._ownerWritableStream;213    if (stream === undefined) {214      return Promise.reject(defaultWriterLockException('close'));215    }216    if (stream._state === 'closing') {217      return Promise.reject(new TypeError('cannot close an already-closing stream'));218    }219    return WritableStreamDefaultWriterClose(this);220  }221  releaseLock() {222    if (IsWritableStreamDefaultWriter(this) === false) {223      throw defaultWriterBrandCheckException('releaseLock');224    }225    const stream = this._ownerWritableStream;226    if (stream === undefined) {227      return;228    }229    assert(stream._writer !== undefined);230    WritableStreamDefaultWriterRelease(this);231  }232  write(chunk) {233    if (IsWritableStreamDefaultWriter(this) === false) {234      return Promise.reject(defaultWriterBrandCheckException('write'));235    }236    const stream = this._ownerWritableStream;237    if (stream === undefined) {238      return Promise.reject(defaultWriterLockException('write to'));239    }240    if (stream._state === 'closing') {241      return Promise.reject(new TypeError('Cannot write to an already-closed stream'));242    }243    return WritableStreamDefaultWriterWrite(this, chunk);244  }245}246// Abstract operations for the WritableStreamDefaultWriter.247function IsWritableStreamDefaultWriter(x) {248  if (!typeIsObject(x)) {249    return false;250  }251  if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {252    return false;253  }254  return true;255}256// A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.257function WritableStreamDefaultWriterAbort(writer, reason) {258  const stream = writer._ownerWritableStream;259  assert(stream !== undefined);260  return WritableStreamAbort(stream, reason);261}262function WritableStreamDefaultWriterClose(writer) {263  const stream = writer._ownerWritableStream;264  assert(stream !== undefined);265  const state = stream._state;266  if (state === 'closed' || state === 'errored') {267    return Promise.reject(new TypeError(268      `The stream (in ${state} state) is not in the writable state and cannot be closed`));269  }270  assert(state === 'writable');271  const promise = WritableStreamAddWriteRequest(stream);272  if (WritableStreamDefaultControllerGetBackpressure(stream._writableStreamController) === true) {273    defaultWriterReadyPromiseResolve(writer);274  }275  stream._state = 'closing';276  WritableStreamDefaultControllerClose(stream._writableStreamController);277  return promise;278}279function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) {280  const stream = writer._ownerWritableStream;281  assert(stream !== undefined);282  const state = stream._state;283  if (state === 'closing' || state === 'closed') {284    return Promise.resolve();285  }286  if (state === 'errored') {287    return Promise.reject(stream._storedError);288  }289  assert(state === 'writable');290  return WritableStreamDefaultWriterClose(writer);291}292function WritableStreamDefaultWriterGetDesiredSize(writer) {293  const stream = writer._ownerWritableStream;294  const state = stream._state;295  if (state === 'errored') {296    return null;297  }298  if (state === 'closed') {299    return 0;300  }301  return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);302}303function WritableStreamDefaultWriterRelease(writer) {304  const stream = writer._ownerWritableStream;305  assert(stream !== undefined);306  assert(stream._writer === writer);307  const releasedError = new TypeError(308    'Writer was released and can no longer be used to monitor the stream\'s closedness');309  const state = stream._state;310  if (state === 'writable' || state === 'closing') {311    defaultWriterClosedPromiseReject(writer, releasedError);312  } else {313    defaultWriterClosedPromiseResetToRejected(writer, releasedError);314  }315  writer._closedPromise.catch(() => {});316  if (state === 'writable' &&317      WritableStreamDefaultControllerGetBackpressure(stream._writableStreamController) === true) {318    defaultWriterReadyPromiseReject(writer, releasedError);319  } else {320    defaultWriterReadyPromiseResetToRejected(writer, releasedError);321  }322  writer._readyPromise.catch(() => {});323  stream._writer = undefined;324  writer._ownerWritableStream = undefined;325}326function WritableStreamDefaultWriterWrite(writer, chunk) {327  const stream = writer._ownerWritableStream;328  assert(stream !== undefined);329  const state = stream._state;330  if (state === 'closed' || state === 'errored') {331    return Promise.reject(new TypeError(332      `The stream (in ${state} state) is not in the writable state and cannot be written to`));333  }334  assert(state === 'writable');335  const promise = WritableStreamAddWriteRequest(stream);336  WritableStreamDefaultControllerWrite(stream._writableStreamController, chunk);337  return promise;338}339class WritableStreamDefaultController {340  constructor(stream, underlyingSink, size, highWaterMark) {341    if (IsWritableStream(stream) === false) {342      throw new TypeError('WritableStreamDefaultController can only be constructed with a WritableStream instance');343    }344    if (stream._writableStreamController !== undefined) {345      throw new TypeError(346        'WritableStreamDefaultController instances can only be created by the WritableStream constructor');347    }348    this._controlledWritableStream = stream;349    this._underlyingSink = underlyingSink;350    this._queue = [];351    this._started = false;352    this._writing = false;353    const normalizedStrategy = ValidateAndNormalizeQueuingStrategy(size, highWaterMark);354    this._strategySize = normalizedStrategy.size;355    this._strategyHWM = normalizedStrategy.highWaterMark;356    const backpressure = WritableStreamDefaultControllerGetBackpressure(this);357    if (backpressure === true) {358      WritableStreamUpdateBackpressure(stream, backpressure);359    }360    const controller = this;361    const startResult = InvokeOrNoop(underlyingSink, 'start', [this]);362    Promise.resolve(startResult).then(363      () => {364        controller._started = true;365        WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);366      },367      r => {368        WritableStreamDefaultControllerErrorIfNeeded(controller, r);369      }370    )371    .catch(rethrowAssertionErrorRejection);372  }373  error(e) {374    if (IsWritableStreamDefaultController(this) === false) {375      throw new TypeError(376        'WritableStreamDefaultController.prototype.error can only be used on a WritableStreamDefaultController');377    }378    const state = this._controlledWritableStream._state;379    if (state === 'closed' || state === 'errored') {380      throw new TypeError(`The stream is ${state} and so cannot be errored`);381    }382    WritableStreamDefaultControllerError(this, e);383  }384}385// Abstract operations implementing interface required by the WritableStream.386function WritableStreamDefaultControllerAbort(controller, reason) {387  controller._queue = [];388  const sinkAbortPromise = PromiseInvokeOrFallbackOrNoop(controller._underlyingSink, 'abort', [reason],389                                                         'close', [controller]);390  return sinkAbortPromise.then(() => undefined);391}392function WritableStreamDefaultControllerClose(controller) {393  EnqueueValueWithSize(controller._queue, 'close', 0);394  WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);395}396function WritableStreamDefaultControllerGetDesiredSize(controller) {397  const queueSize = GetTotalQueueSize(controller._queue);398  return controller._strategyHWM - queueSize;399}400function WritableStreamDefaultControllerWrite(controller, chunk) {401  const stream = controller._controlledWritableStream;402  assert(stream._state === 'writable');403  let chunkSize = 1;404  if (controller._strategySize !== undefined) {405    try {406      chunkSize = controller._strategySize(chunk);407    } catch (chunkSizeE) {408      // TODO: Should we notify the sink of this error?409      WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);410      return;411    }412  }413  const writeRecord = { chunk };414  const lastBackpressure = WritableStreamDefaultControllerGetBackpressure(controller);415  try {416    EnqueueValueWithSize(controller._queue, writeRecord, chunkSize);417  } catch (enqueueE) {418    WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);419    return;420  }421  if (stream._state === 'writable') {422    const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);423    if (lastBackpressure !== backpressure) {424      WritableStreamUpdateBackpressure(stream, backpressure);425    }426  }427  WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);428}429// Abstract operations for the WritableStreamDefaultController.430function IsWritableStreamDefaultController(x) {431  if (!typeIsObject(x)) {432    return false;433  }434  if (!Object.prototype.hasOwnProperty.call(x, '_underlyingSink')) {435    return false;436  }437  return true;438}439function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) {440  if (controller._controlledWritableStream._state === 'closed' ||441      controller._controlledWritableStream._state === 'errored') {442    return;443  }444  if (controller._started === false) {445    return;446  }447  if (controller._writing === true) {448    return;449  }450  if (controller._queue.length === 0) {451    return;452  }453  const writeRecord = PeekQueueValue(controller._queue);454  if (writeRecord === 'close') {455    WritableStreamDefaultControllerProcessClose(controller);456  } else {457    WritableStreamDefaultControllerProcessWrite(controller, writeRecord.chunk);458  }459}460function WritableStreamDefaultControllerErrorIfNeeded(controller, e) {461  if (controller._controlledWritableStream._state === 'writable' ||462      controller._controlledWritableStream._state === 'closing') {463    WritableStreamDefaultControllerError(controller, e);464  }465}466function WritableStreamDefaultControllerProcessClose(controller) {467  const stream = controller._controlledWritableStream;468  assert(stream._state === 'closing', 'can\'t process final write record unless already closed');469  DequeueValue(controller._queue);470  assert(controller._queue.length === 0, 'queue must be empty once the final write record is dequeued');471  const sinkClosePromise = PromiseInvokeOrNoop(controller._underlyingSink, 'close', [controller]);472  sinkClosePromise.then(473    () => {474      if (stream._state !== 'closing') {475        return;476      }477      WritableStreamFulfillWriteRequest(stream);478      WritableStreamFinishClose(stream);479    },480    r => {481      WritableStreamDefaultControllerErrorIfNeeded(controller, r);482    }483  )484  .catch(rethrowAssertionErrorRejection);485}486function WritableStreamDefaultControllerProcessWrite(controller, chunk) {487  controller._writing = true;488  const sinkWritePromise = PromiseInvokeOrNoop(controller._underlyingSink, 'write', [chunk, controller]);489  sinkWritePromise.then(490    () => {491      const stream = controller._controlledWritableStream;492      const state = stream._state;493      if (state === 'errored' || state === 'closed') {494        return;495      }496      controller._writing = false;497      WritableStreamFulfillWriteRequest(stream);498      const lastBackpressure = WritableStreamDefaultControllerGetBackpressure(controller);499      DequeueValue(controller._queue);500      if (state !== 'closing') {501        const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);502        if (lastBackpressure !== backpressure) {503          WritableStreamUpdateBackpressure(controller._controlledWritableStream, backpressure);504        }505      }506      WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);507    },508    r => {509      WritableStreamDefaultControllerErrorIfNeeded(controller, r);510    }511  )512  .catch(rethrowAssertionErrorRejection);513}514function WritableStreamDefaultControllerGetBackpressure(controller) {515  const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);516  return desiredSize <= 0;517}518// A client of WritableStreamDefaultController may use these functions directly to bypass state check.519function WritableStreamDefaultControllerError(controller, e) {520  const stream = controller._controlledWritableStream;521  assert(stream._state === 'writable' || stream._state === 'closing');522  WritableStreamError(stream, e);523  controller._queue = [];524}525// Helper functions for the WritableStream.526function streamBrandCheckException(name) {527  return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);528}529// Helper functions for the WritableStreamDefaultWriter.530function defaultWriterBrandCheckException(name) {531  return new TypeError(532    `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`);533}534function defaultWriterLockException(name) {535  return new TypeError('Cannot ' + name + ' a stream using a released writer');536}537function defaultWriterClosedPromiseInitialize(writer) {538  writer._closedPromise = new Promise((resolve, reject) => {539    writer._closedPromise_resolve = resolve;540    writer._closedPromise_reject = reject;541  });542}543function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) {544  writer._closedPromise = Promise.reject(reason);545  writer._closedPromise_resolve = undefined;546  writer._closedPromise_reject = undefined;547}548function defaultWriterClosedPromiseInitializeAsResolved(writer) {549  writer._closedPromise = Promise.resolve(undefined);550  writer._closedPromise_resolve = undefined;551  writer._closedPromise_reject = undefined;552}553function defaultWriterClosedPromiseReject(writer, reason) {554  assert(writer._closedPromise_resolve !== undefined);555  assert(writer._closedPromise_reject !== undefined);556  writer._closedPromise_reject(reason);557  writer._closedPromise_resolve = undefined;...

Using AI Code Generation

1const defaultWriterClosedPromiseInitializeAsRejected = wpt.defaultWriterClosedPromiseInitializeAsRejected;2const writer = new WritableStreamDefaultWriter(stream);3defaultWriterClosedPromiseInitializeAsRejected(writer, reason);4writer.closed.then(5  () => console.log('closed fulfilled'),6  r => console.log(`closed rejected with ${r}`)7);8const defaultWriterClosedPromiseInitializeAsRejected = wpt.defaultWriterClosedPromiseInitializeAsRejected;9const writer = new WritableStreamDefaultWriter(stream);10defaultWriterClosedPromiseInitializeAsRejected(writer, reason);11writer.closed.then(12  () => console.log('closed fulfilled'),13  r => console.log(`closed rejected with ${r}`)14);15const defaultWriterClosedPromiseInitializeAsRejected = wpt.defaultWriterClosedPromiseInitializeAsRejected;16const writer = new WritableStreamDefaultWriter(stream);17defaultWriterClosedPromiseInitializeAsRejected(writer, reason);18writer.closed.then(19  () => console.log('closed fulfilled'),20  r => console.log(`closed rejected with ${r}`)21);22const defaultWriterClosedPromiseInitializeAsRejected = wpt.defaultWriterClosedPromiseInitializeAsRejected;23const writer = new WritableStreamDefaultWriter(stream);24defaultWriterClosedPromiseInitializeAsRejected(writer, reason);25writer.closed.then(26  () => console.log('closed fulfilled'),27  r => console.log(`closed rejected with ${r}`)28);29const defaultWriterClosedPromiseInitializeAsRejected = wpt.defaultWriterClosedPromiseInitializeAsRejected;30const writer = new WritableStreamDefaultWriter(stream);31defaultWriterClosedPromiseInitializeAsRejected(writer, reason);32writer.closed.then(33  () => console.log('closed fulfilled'),34  r => console.log(`closed rejected with ${r}`)35);36const defaultWriterClosedPromiseInitializeAsRejected = wpt.defaultWriterClosedPromiseInitializeAsRejected;37const writer = new WritableStreamDefaultWriter(stream);38defaultWriterClosedPromiseInitializeAsRejected(writer, reason);39writer.closed.then(40  () => console.log('closed fulfilled'),41  r => console.log(`closed rejected with ${r}`)42);

Using AI Code Generation

1import {defaultWriterClosedPromiseInitializeAsRejected} from2"../streams/writable-streams/default-writer-closed-promise-initialize-as-rejected.js";3import {createWritableStream} from "../streams/writable-streams/writable-stream.js";4import {assert_equals} from "../streams/resources/test-utils.js";5let ws = createWritableStream();6let writer = ws.getWriter();7defaultWriterClosedPromiseInitializeAsRejected(writer, new Error("rejected"));8assert_equals(writer.closed._state, "rejected");9assert_equals(writer.closed._value.message, "rejected");

Using AI Code Generation

1import * as wpt from 'web-streams-polyfill/ponyfill/es6';2wpt.defaultWriterClosedPromiseInitializeAsRejected();3import * as wpt from 'web-streams-polyfill/ponyfill/es2018';4wpt.defaultWriterClosedPromiseInitializeAsRejected();5import * as wpt from 'web-streams-polyfill/ponyfill/es2020';6wpt.defaultWriterClosedPromiseInitializeAsRejected();7import * as wpt from 'web-streams-polyfill/ponyfill/es2021';8wpt.defaultWriterClosedPromiseInitializeAsRejected();9import * as wpt from 'web-streams-polyfill/ponyfill/esnext';10wpt.defaultWriterClosedPromiseInitializeAsRejected();11import * as wpt from 'web-streams-polyfill/ponyfill';12wpt.defaultWriterClosedPromiseInitializeAsRejected();13import * as wpt from 'web-streams-polyfill';14wpt.defaultWriterClosedPromiseInitializeAsRejected();

Using AI Code Generation

1import { defaultWriterClosedPromiseInitializeAsRejected } from "./resources/wpt.js";2const writer = new WritableStream().getWriter();3defaultWriterClosedPromiseInitializeAsRejected(writer, new Error("error"));4writer.closed.then(5  () => assert_unreached("closed promise should not fulfill"),6  (e) => assert_equals(e.message, "error")7);8* [Web platform tests](

Using AI Code Generation

1defaultWriterClosedPromiseInitializeAsRejected(writer, new TypeError("error"));2writer.closed.then(() => {3  assert_unreached("writer.closed should be rejected");4}).catch(e => {5  assert_equals(e.name, "TypeError", "writer.closed should be rejected with a TypeError");6});7defaultWriterClosedPromiseInitializeAsRejected(writer, new TypeError("error"));8writer.closed.then(() => {9  assert_unreached("writer.closed should be rejected");10}).catch(e => {11  assert_equals(e.name, "TypeError", "writer.closed should be rejected with a TypeError");12});13promise_test(() => {14  return promise_rejects(t, new TypeError(), writer.closed, 'writer.closed should be rejected');15}, '...');16defaultWriterClosedPromiseInitializeAsRejected(writer, new TypeError("error"));17writer.closed.then(() => {18  assert_unreached("writer.closed should be rejected");19}).catch(e => {20  assert_equals(e.name, "TypeError", "writer.closed should be rejected with a TypeError");21});22promise_test(() => {23  return promise_rejects(t, new TypeError(), writer.closed, 'writer.closed should be rejected');24}, '...');

Using AI Code Generation

1const { defaultWriterClosedPromiseInitializeAsRejected } = require('wpt')2const w = new WritableStream()3const writer = w.getWriter()4defaultWriterClosedPromiseInitializeAsRejected(writer)5writer.closed.then(6  () => console.log('closed'),7  () => console.log('errored')8const { defaultWriterClosedPromiseInitializeAsRejectedWith } = require('wpt')9const w = new WritableStream()10const writer = w.getWriter()11defaultWriterClosedPromiseInitializeAsRejectedWith(writer, new Error('oh no'))12writer.closed.then(13  () => console.log('closed'),14  () => console.log('errored')15const { defaultWriterClosedPromiseInitializeAsResolved } = require('wpt')16const w = new WritableStream()17const writer = w.getWriter()18defaultWriterClosedPromiseInitializeAsResolved(writer)19writer.closed.then(20  () => console.log('closed'),21  () => console.log('errored')22const { defaultWriterReadyPromiseInitializeAsRejected } = require('wpt')23const w = new WritableStream()24const writer = w.getWriter()25defaultWriterReadyPromiseInitializeAsRejected(writer, new Error('oh no'))26writer.ready.then(27  () => console.log('resolved'),28  () => console.log('rejected')29const { defaultWriterReadyPromiseInitializeAsResolved } = require('wpt')30const w = new WritableStream()31const writer = w.getWriter()32defaultWriterReadyPromiseInitializeAsResolved(writer)33writer.ready.then(34  () => console.log('resolved'),35  () => console.log('rejected')

Using AI Code Generation

1'use strict';2var test = async_test(document.title);3var defaultWriterClosedPromise = new WritableStream().getWriter().closed;4test.step(function() {5  defaultWriterClosedPromise.then(test.step_func(function() {6    assert_unreached('closed promise should be rejected');7  }), test.step_func(function(reason) {8    assert_equals(reason.name, 'TypeError', 'closed promise should be rejected with a TypeError');9  })).then(test.step_func(function() {10    test.done();11  }));12});13'use strict';14var test = async_test(document.title);15var defaultWriterClosedPromise = new WritableStream().getWriter().closed;16test.step(function() {17  defaultWriterClosedPromise.then(test.step_func(function() {18    assert_unreached('closed promise should be rejected');19  }), test.step_func(function(reason) {20    assert_equals(reason.name, 'TypeError', 'closed promise should be rejected with a TypeError');21  })).then(test.step_func(function() {22    test.done();23  }));24});25'use strict';26var test = async_test(document.title);27var defaultWriterClosedPromise = new WritableStream().getWriter().closed;28test.step(function() {29  defaultWriterClosedPromise.then(test.step_func(function() {30    assert_unreached('closed promise should be rejected');31  }), test.step_func(function(reason) {32    assert_equals(reason.name, 'TypeError', 'closed promise should be rejected with a TypeError');33  })).then(test.step_func(function() {34    test.done();35  }));36});37'use strict';38var test = async_test(document.title);39var defaultWriterClosedPromise = new WritableStream().getWriter().closed;40test.step(function() {

Using AI Code Generation

1'use strict';2promise_test(() => {3  let defaultWriterClosedPromiseInitializeAsRejected = new WritableStream({4    start(c) {5      c.error();6    }7  }).getWriter().closed;8  return promise_rejects_exactly(9      new TypeError(),10      'closed promise should be rejected with the error that caused the state to become "errored"');11}, 'closed promise should be rejected when the writer is closed and the state is "writable"');

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