Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use defaultWriterLockException method in wpt

Best JavaScript code snippet using wpt

writable.js

Source:writable.js

...372      if (IsWritableStreamDefaultWriter(this) === false) {373        throw defaultWriterBrandCheckException('desiredSize');374      }375      if (this[kOwnerWritableStream] === undefined) {376        throw defaultWriterLockException('desiredSize');377      }378      return WritableStreamDefaultWriterGetDesiredSize(this);379    }380    get ready() {381      if (IsWritableStreamDefaultWriter(this) === false) {382        return Promise.reject(defaultWriterBrandCheckException('ready'));383      }384      return this[kReadyPromise];385    }386    abort(reason) {387      if (IsWritableStreamDefaultWriter(this) === false) {388        return Promise.reject(defaultWriterBrandCheckException('abort'));389      }390      if (this[kOwnerWritableStream] === undefined) {391        return Promise.reject(defaultWriterLockException('abort'));392      }393      return WritableStreamDefaultWriterAbort(this, reason);394    }395    close() {396      if (IsWritableStreamDefaultWriter(this) === false) {397        return Promise.reject(defaultWriterBrandCheckException('close'));398      }399      const stream = this[kOwnerWritableStream];400      if (stream === undefined) {401        return Promise.reject(defaultWriterLockException('close'));402      }403      if (WritableStreamCloseQueuedOrInFlight(stream) === true) {404        return Promise.reject(new TypeError('cannot close an already-closing stream'));405      }406      return WritableStreamDefaultWriterClose(this);407    }408    releaseLock() {409      if (IsWritableStreamDefaultWriter(this) === false) {410        throw defaultWriterBrandCheckException('releaseLock');411      }412      const stream = this[kOwnerWritableStream];413      if (stream === undefined) {414        return;415      }416      assert(stream[kWriter] !== undefined);417      WritableStreamDefaultWriterRelease(this);418    }419    write(chunk) {420      if (IsWritableStreamDefaultWriter(this) === false) {421        return Promise.reject(defaultWriterBrandCheckException('write'));422      }423      if (this[kOwnerWritableStream] === undefined) {424        return Promise.reject(defaultWriterLockException('write to'));425      }426      return WritableStreamDefaultWriterWrite(this, chunk);427    }428  }429  // Abstract operations for the WritableStreamDefaultWriter.430  function IsWritableStreamDefaultWriter(x) {431    if (!typeIsObject(x)) {432      return false;433    }434    if (!Object.prototype.hasOwnProperty.call(x, kOwnerWritableStream)) {435      return false;436    }437    return true;438  }439  // A client of WritableStreamDefaultWriter may use these functions directly to bypass state check.440  function WritableStreamDefaultWriterAbort(writer, reason) {441    const stream = writer[kOwnerWritableStream];442    assert(stream !== undefined);443    return WritableStreamAbort(stream, reason);444  }445  function WritableStreamDefaultWriterClose(writer) {446    const stream = writer[kOwnerWritableStream];447    assert(stream !== undefined);448    const state = stream[kState];449    if (state === 'closed' || state === 'errored') {450      return Promise.reject(new TypeError(451        `The stream (in ${state} state) is not in the writable state and cannot be closed`,452      ));453    }454    assert(state === 'writable' || state === 'erroring');455    assert(WritableStreamCloseQueuedOrInFlight(stream) === false);456    const promise = new Promise((resolve, reject) => {457      const closeRequest = {458        _resolve: resolve,459        _reject: reject,460      };461      stream[kCloseRequest] = closeRequest;462    });463    if (stream[kBackpressure] === true && state === 'writable') {464      defaultWriterReadyPromiseResolve(writer);465    }466    WritableStreamDefaultControllerClose(stream[kWritableStreamController]);467    return promise;468  }469  function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) {470    const stream = writer[kOwnerWritableStream];471    assert(stream !== undefined);472    const state = stream[kState];473    if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {474      return Promise.resolve();475    }476    if (state === 'errored') {477      return Promise.reject(stream[kStoredError]);478    }479    assert(state === 'writable' || state === 'erroring');480    return WritableStreamDefaultWriterClose(writer);481  }482  function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) {483    if (writer[kClosedPromiseState] === 'pending') {484      defaultWriterClosedPromiseReject(writer, error);485    } else {486      defaultWriterClosedPromiseResetToRejected(writer, error);487    }488    writer[kClosedPromise].catch(() => {});489  }490  function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) {491    if (writer[kReadyPromiseState] === 'pending') {492      defaultWriterReadyPromiseReject(writer, error);493    } else {494      defaultWriterReadyPromiseResetToRejected(writer, error);495    }496    writer[kReadyPromise].catch(() => {});497  }498  function WritableStreamDefaultWriterGetDesiredSize(writer) {499    const stream = writer[kOwnerWritableStream];500    const state = stream[kState];501    if (state === 'errored' || state === 'erroring') {502      return null;503    }504    if (state === 'closed') {505      return 0;506    }507    return WritableStreamDefaultControllerGetDesiredSize(stream[kWritableStreamController]);508  }509  function WritableStreamDefaultWriterRelease(writer) {510    const stream = writer[kOwnerWritableStream];511    assert(stream !== undefined);512    assert(stream[kWriter] === writer);513    const releasedError = new TypeError(514      'Writer was released and can no longer be used to monitor the stream\'s closedness',515    );516    WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);517    // The state transitions to "errored" before the sink abort() method runs, but the writer.closed promise is not518    // rejected until afterwards. This means that simply testing state will not work.519    WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);520    stream[kWriter] = undefined;521    writer[kOwnerWritableStream] = undefined;522  }523  function WritableStreamDefaultWriterWrite(writer, chunk) {524    const stream = writer[kOwnerWritableStream];525    assert(stream !== undefined);526    const controller = stream[kWritableStreamController];527    const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);528    if (stream !== writer[kOwnerWritableStream]) {529      return Promise.reject(defaultWriterLockException('write to'));530    }531    const state = stream[kState];532    if (state === 'errored') {533      return Promise.reject(stream[kStoredError]);534    }535    if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {536      return Promise.reject(new TypeError('The stream is closing or closed and cannot be written to'));537    }538    if (state === 'erroring') {539      return Promise.reject(stream[kStoredError]);540    }541    assert(state === 'writable');542    const promise = WritableStreamAddWriteRequest(stream);543    WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);544    return promise;545  }546  class WritableStreamDefaultController {547    constructor() {548      throw new TypeError('WritableStreamDefaultController cannot be constructed explicitly');549    }550    error(e) {551      if (IsWritableStreamDefaultController(this) === false) {552        throw new TypeError(553          'WritableStreamDefaultController.prototype.error can only be used on a WritableStreamDefaultController',554        );555      }556      const state = this[kControlledWritableStream][kState];557      if (state !== 'writable') {558      // The stream is closed, errored or will be soon. The sink can't do anything useful if it gets an error here, so559      // just treat it as a no-op.560        return;561      }562      WritableStreamDefaultControllerError(this, e);563    }564    [AbortSteps](reason) {565      return this[kAbortAlgorithm](reason);566    }567    [ErrorSteps]() {568      ResetQueue(this);569    }570  }571  // Abstract operations implementing interface required by the WritableStream.572  function IsWritableStreamDefaultController(x) {573    if (!typeIsObject(x)) {574      return false;575    }576    if (!Object.prototype.hasOwnProperty.call(x, kControlledWritableStream)) {577      return false;578    }579    return true;580  }581  function SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,582    abortAlgorithm, highWaterMark, sizeAlgorithm) {583    assert(IsWritableStream(stream) === true);584    assert(stream[kWritableStreamController] === undefined);585    controller[kControlledWritableStream] = stream;586    stream[kWritableStreamController] = controller;587    // Need to set the slots so that the assert doesn't fire. In the spec the slots already exist implicitly.588    controller[kQueue] = undefined;589    controller[kQueueTotalSize] = undefined;590    ResetQueue(controller);591    controller[kStarted] = false;592    controller[kStrategySizeAlgorithm] = sizeAlgorithm;593    controller[kStrategyHWM] = highWaterMark;594    controller[kWriteAlgorithm] = writeAlgorithm;595    controller[kCloseAlgorithm] = closeAlgorithm;596    controller[kAbortAlgorithm] = abortAlgorithm;597    const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);598    WritableStreamUpdateBackpressure(stream, backpressure);599    const startResult = startAlgorithm();600    const startPromise = Promise.resolve(startResult);601    startPromise.then(602      () => {603        assert(stream[kState] === 'writable' || stream[kState] === 'erroring');604        controller[kStarted] = true;605        WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);606      },607      (r) => {608        assert(stream[kState] === 'writable' || stream[kState] === 'erroring');609        controller[kStarted] = true;610        WritableStreamDealWithRejection(stream, r);611      },612    )613      .catch(rethrowAssertionErrorRejection);614  }615  function SetUpWritableStreamDefaultControllerFromUnderlyingSink(stream, underlyingSink, highWaterMark, sizeAlgorithm) {616    assert(underlyingSink !== undefined);617    const controller = Object.create(WritableStreamDefaultController.prototype);618    function startAlgorithm() {619      return InvokeOrNoop(underlyingSink, 'start', [controller]);620    }621    const writeAlgorithm = CreateAlgorithmFromUnderlyingMethod(underlyingSink, 'write', 1, [controller]);622    const closeAlgorithm = CreateAlgorithmFromUnderlyingMethod(underlyingSink, 'close', 0, []);623    const abortAlgorithm = CreateAlgorithmFromUnderlyingMethod(underlyingSink, 'abort', 1, []);624    SetUpWritableStreamDefaultController(stream, controller, startAlgorithm, writeAlgorithm, closeAlgorithm,625      abortAlgorithm, highWaterMark, sizeAlgorithm);626  }627  function WritableStreamDefaultControllerClose(controller) {628    EnqueueValueWithSize(controller, 'close', 0);629    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);630  }631  function WritableStreamDefaultControllerGetChunkSize(controller, chunk) {632    try {633      return controller[kStrategySizeAlgorithm](chunk);634    } catch (chunkSizeE) {635      WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);636      return 1;637    }638  }639  function WritableStreamDefaultControllerGetDesiredSize(controller) {640    return controller[kStrategyHWM] - controller[kQueueTotalSize];641  }642  function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) {643    const writeRecord = { chunk };644    try {645      EnqueueValueWithSize(controller, writeRecord, chunkSize);646    } catch (enqueueE) {647      WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);648      return;649    }650    const stream = controller[kControlledWritableStream];651    if (WritableStreamCloseQueuedOrInFlight(stream) === false && stream[kState] === 'writable') {652      const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);653      WritableStreamUpdateBackpressure(stream, backpressure);654    }655    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);656  }657  // Abstract operations for the WritableStreamDefaultController.658  function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) {659    const stream = controller[kControlledWritableStream];660    if (controller[kStarted] === false) {661      return;662    }663    if (stream[kInFlightWriteRequest] !== undefined) {664      return;665    }666    const state = stream[kState];667    if (state === 'closed' || state === 'errored') {668      return;669    }670    if (state === 'erroring') {671      WritableStreamFinishErroring(stream);672      return;673    }674    if (controller[kQueue].length === 0) {675      return;676    }677    const writeRecord = PeekQueueValue(controller);678    if (writeRecord === 'close') {679      WritableStreamDefaultControllerProcessClose(controller);680    } else {681      WritableStreamDefaultControllerProcessWrite(controller, writeRecord.chunk);682    }683  }684  function WritableStreamDefaultControllerErrorIfNeeded(controller, error) {685    if (controller[kControlledWritableStream][kState] === 'writable') {686      WritableStreamDefaultControllerError(controller, error);687    }688  }689  function WritableStreamDefaultControllerProcessClose(controller) {690    const stream = controller[kControlledWritableStream];691    WritableStreamMarkCloseRequestInFlight(stream);692    DequeueValue(controller);693    assert(controller[kQueue].length === 0);694    const sinkClosePromise = controller[kCloseAlgorithm]();695    sinkClosePromise.then(696      () => {697        WritableStreamFinishInFlightClose(stream);698      },699      (reason) => {700        WritableStreamFinishInFlightCloseWithError(stream, reason);701      },702    )703      .catch(rethrowAssertionErrorRejection);704  }705  function WritableStreamDefaultControllerProcessWrite(controller, chunk) {706    const stream = controller[kControlledWritableStream];707    WritableStreamMarkFirstWriteRequestInFlight(stream);708    const sinkWritePromise = controller[kWriteAlgorithm](chunk);709    sinkWritePromise.then(710      () => {711        WritableStreamFinishInFlightWrite(stream);712        const state = stream[kState];713        assert(state === 'writable' || state === 'erroring');714        DequeueValue(controller);715        if (WritableStreamCloseQueuedOrInFlight(stream) === false && state === 'writable') {716          const backpressure = WritableStreamDefaultControllerGetBackpressure(controller);717          WritableStreamUpdateBackpressure(stream, backpressure);718        }719        WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);720      },721      (reason) => {722        WritableStreamFinishInFlightWriteWithError(stream, reason);723      },724    )725      .catch(rethrowAssertionErrorRejection);726  }727  function WritableStreamDefaultControllerGetBackpressure(controller) {728    const desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);729    return desiredSize <= 0;730  }731  // A client of WritableStreamDefaultController may use these functions directly to bypass state check.732  function WritableStreamDefaultControllerError(controller, error) {733    const stream = controller[kControlledWritableStream];734    assert(stream[kState] === 'writable');735    WritableStreamStartErroring(stream, error);736  }737  // Helper functions for the WritableStream.738  function streamBrandCheckException(name) {739    return new TypeError(`WritableStream.prototype.${name} can only be used on a WritableStream`);740  }741  // Helper functions for the WritableStreamDefaultWriter.742  function defaultWriterBrandCheckException(name) {743    return new TypeError(744      `WritableStreamDefaultWriter.prototype.${name} can only be used on a WritableStreamDefaultWriter`,745    );746  }747  function defaultWriterLockException(name) {748    return new TypeError(`Cannot ${name} a stream using a released writer`);749  }750  function defaultWriterClosedPromiseInitialize(writer) {751    writer[kClosedPromise] = new Promise((resolve, reject) => {752      writer[kClosedPromiseResolve] = resolve;753      writer[kClosedPromiseReject] = reject;754      writer[kClosedPromiseState] = 'pending';755    });756  }757  function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) {758    writer[kClosedPromise] = Promise.reject(reason);759    writer[kClosedPromiseResolve] = undefined;760    writer[kClosedPromiseReject] = undefined;761    writer[kClosedPromiseState] = 'rejected';...

writable-stream.js

Source:writable-stream.js

...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) {...

WritableStreamDefaultWriter-impl.js

Source:WritableStreamDefaultWriter-impl.js

...10    return this._closedPromise;11  }12  get desiredSize() {13    if (this._stream === undefined) {14      throw defaultWriterLockException('desiredSize');15    }16    return aos.WritableStreamDefaultWriterGetDesiredSize(this);17  }18  get ready() {19    return this._readyPromise;20  }21  abort(reason) {22    if (this._stream === undefined) {23      return promiseRejectedWith(defaultWriterLockException('abort'));24    }25    return aos.WritableStreamDefaultWriterAbort(this, reason);26  }27  close() {28    const stream = this._stream;29    if (stream === undefined) {30      return promiseRejectedWith(defaultWriterLockException('close'));31    }32    if (aos.WritableStreamCloseQueuedOrInFlight(stream) === true) {33      return promiseRejectedWith(new TypeError('Cannot close an already-closing stream'));34    }35    return aos.WritableStreamDefaultWriterClose(this);36  }37  releaseLock() {38    const stream = this._stream;39    if (stream === undefined) {40      return;41    }42    assert(stream._writer !== undefined);43    aos.WritableStreamDefaultWriterRelease(this);44  }45  write(chunk) {46    if (this._stream === undefined) {47      return promiseRejectedWith(defaultWriterLockException('write to'));48    }49    return aos.WritableStreamDefaultWriterWrite(this, chunk);50  }51};52function defaultWriterLockException(name) {53  return new TypeError('Cannot ' + name + ' a stream using a released writer');...

Using AI Code Generation

1var wptLockException = require('wptLockException');2var wptLockExceptionObj = new wptLockException();3var defaultWriterLockExceptionObj = wptLockExceptionObj.defaultWriterLockException();4console.log(defaultWriterLockExceptionObj);5{ message: 'Writer lock exception', name: 'WriterLockException', code: 0 }6wptLockException.defaultReaderLockException()7wptLockException.defaultWriterLockException()

Using AI Code Generation

1importClass(Packages.com.ibm.workplace.wcm.api.WCMException);2importClass(Packages.com.ibm.workplace.wcm.api.WCMContent);3importClass(Packages.com.ibm.workplace.wcm.api.WCMContentManager);4importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItem);5importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersion);6importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionCollection);7importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionList);8importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionManager);9importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadata);10importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);11importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);12importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);13importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);14importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);15importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);16importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);17importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);18importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);19importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);20importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);21importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);22importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);23importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);24importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);25importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);26importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataList);27importClass(Packages.com.ibm.workplace.wcm.api.WCMContentItemVersionMetadataManager);28importClass(Packages

Using AI Code Generation

1importClass(java.lang.System);2importClass(java.io.File);3importClass(java.io.FileOutputStream);4importClass(java.io.IOException);5importClass(java.io.FileNotFoundException);6importClass(java.io.RandomAccessFile);7importClass(java.nio.channels.FileChannel);8importClass(java.nio.channels.FileLock);9var file = new File("test.txt");10var fileOutStream = new FileOutputStream(file);11var fileChannel = fileOutStream.getChannel();12var fileLock = fileChannel.lock();13System.out.println(fileLock.toString());14fileLock.release();15fileChannel.close();16fileOutStream.close();17importClass(java.lang.System);18importClass(java.io.File);19importClass(java.io.FileOutputStream);20importClass(java.io.IOException);21importClass(java.io.FileNotFoundException);22importClass(java.io.RandomAccessFile);23importClass(java.nio.channels.FileChannel);24importClass(java.nio.channels.FileLock);25var file = new File("test.txt");26var fileOutStream = new FileOutputStream(file);27var fileChannel = fileOutStream.getChannel();28var fileLock = fileChannel.lock();29System.out.println(fileLock.toString());30fileLock.release();31fileChannel.close();32fileOutStream.close();33importClass(java.lang.System);34importClass(java.io.File);35importClass(java.io.FileOutputStream);36importClass(java.io.IOException);37importClass(java.io.FileNotFoundException);38importClass(java.io.RandomAccessFile);39importClass(java.nio.channels.FileChannel);40importClass(java.nio.channels.FileLock);41var file = new File("test.txt");42var fileOutStream = new FileOutputStream(file);43var fileChannel = fileOutStream.getChannel();44var fileLock = fileChannel.lock(0, 10, false);45System.out.println(fileLock.toString());46fileLock.release();47fileChannel.close();48fileOutStream.close();49importClass(java.lang.System);50importClass(java.io.File);51importClass(java.io.FileOutputStream);52importClass(java.io.IOException);53importClass(java.io.FileNotFoundException);54importClass(java.io.RandomAccessFile);55importClass(java.nio.channels.FileChannel);56importClass(java.nio.channels.FileLock);57var file = new File("test.txt");58var fileOutStream = new FileOutputStream(file);59var fileChannel = fileOutStream.getChannel();60var fileLock = fileChannel.lock(0, 10, false);61System.out.println(fileLock.toString());

Using AI Code Generation

1function test() {2    var exception = wpt.defaultWriterLockException;3    if (exception instanceof Object) {4        testPassed('defaultWriterLockException is an Object');5    } else {6        testFailed('defaultWriterLockException is not an Object');7    }8}9test();

Using AI Code Generation

1var wpt = require('wpt');2var wptObj = new wpt();3var defaultWriterLockException = wptObj.defaultWriterLockException();4console.log(defaultWriterLockException);5Example 2: Using defaultWriterLockException() method6var wpt = require('wpt');7var wptObj = new wpt();8var defaultWriterLockException = wptObj.defaultWriterLockException();9console.log(defaultWriterLockException);

Using AI Code Generation

1var wptools = require('wptools');2var fs = require("fs");3var file = fs.createWriteStream("lock.txt");4var file2 = fs.createWriteStream("lock2.txt");5var lock = wptools.defaultWriterLockException(file);6var lock2 = wptools.defaultWriterLockException(file2);7lock.lock();8lock2.lock();9lock.unlock();10lock2.unlock();11lock.lock();12lock2.lock();

Using AI Code Generation

1var wptools = require('wptools');2var wpt = new wptools();3wpt.defaultWriterLockException(function(err, data) {4  console.log(data);5});6{7}8var wptools = require('wptools');9var wpt = new wptools();10wpt.setDefaultWriterLockException(true, function(err, data) {11  console.log(data);12});13{14}15var wptools = require('wptools');16var wpt = new wptools();17wpt.getWriterLockException(function(err, data) {18  console.log(data);19});20{21}22var wptools = require('wptools');23var wpt = new wptools();24wpt.setWriterLockException(['

Using AI Code Generation

1var wptools = require('wptools');2var writerLockExceptionObj = wptools.defaultWriterLockException();3wptools.defaultWriterLockException(writerLockExceptionObj);4var getWriterLockExceptionObj = wptools.defaultWriterLockException();5console.log('getWriterLockExceptionObj = ' + getWriterLockExceptionObj);6var wptools = require('wptools');7var writerLockExceptionObj = wptools.defaultWriterLockException();8wptools.defaultWriterLockException(writerLockExceptionObj);

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.