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How to use WritableStreamCloseQueuedOrInFlight method in wpt

Best JavaScript code snippet using wpt

WritableStream.js

Source:WritableStream.js

...318      stream[_pendingAbortRequest] = undefined;319    }320    WritableStreamDealWithRejection(stream, error);321  }322  function WritableStreamCloseQueuedOrInFlight(stream) {323    return stream[_closeRequest] !== undefined ||324        stream[_inFlightCloseRequest] !== undefined;325  }326  function WritableStreamHasOperationMarkedInFlight(stream) {327    return stream[_inFlightWriteRequest] !== undefined ||328        stream[_inFlightCloseRequest] !== undefined;329  }330  function WritableStreamMarkCloseRequestInFlight(stream) {331    // assert(stream[_inFlightCloseRequest] === undefined,332    //        '_stream_.[[inFlightCloseRequest]] is *undefined*.');333    // assert(stream[_closeRequest] !== undefined,334    //        '_stream_.[[closeRequest]] is not *undefined*.');335    stream[_inFlightCloseRequest] = stream[_closeRequest];336    stream[_closeRequest] = undefined;337  }338  function WritableStreamMarkFirstWriteRequestInFlight(stream) {339    // assert(stream[_inFlightWriteRequest] === undefined,340    //        '_stream_.[[inFlightWriteRequest]] is *undefined*.');341    // assert(stream[_writeRequests].length !== 0,342    //        '_stream_.[[writeRequests]] is not empty.');343    const writeRequest = stream[_writeRequests].shift();344    stream[_inFlightWriteRequest] = writeRequest;345  }346  function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) {347    // assert((stream[_stateAndFlags] & STATE_MASK) === ERRORED,348    //        '_stream_.[[state]] is `"errored"`');349    if (stream[_closeRequest] !== undefined) {350      // assert(stream[_inFlightCloseRequest] === undefined,351      //        '_stream_.[[inFlightCloseRequest]] is *undefined*');352      rejectPromise(stream[_closeRequest], stream[_storedError]);353      stream[_closeRequest] = undefined;354    }355    const writer = stream[_writer];356    if (writer !== undefined) {357      rejectPromise(writer[_closedPromise], stream[_storedError]);358      markPromiseAsHandled(writer[_closedPromise]);359    }360  }361  function WritableStreamUpdateBackpressure(stream, backpressure) {362    // assert((stream[_stateAndFlags] & STATE_MASK) === WRITABLE,363    //        'stream.[[state]] is "writable".');364    // assert(!WritableStreamCloseQueuedOrInFlight(stream),365    //        'WritableStreamCloseQueuedOrInFlight(_stream_) is *false*.');366    const writer = stream[_writer];367    if (writer !== undefined &&368        backpressure !== Boolean(stream[_stateAndFlags] & BACKPRESSURE_FLAG)) {369      if (backpressure) {370        writer[_readyPromise] = v8.createPromise();371      } else {372        // assert(!backpressure, '_backpressure_ is *false*.');373        resolvePromise(writer[_readyPromise], undefined);374      }375    }376    if (backpressure) {377      stream[_stateAndFlags] |= BACKPRESSURE_FLAG;378    } else {379      stream[_stateAndFlags] &= ~BACKPRESSURE_FLAG;380    }381  }382  // Functions to expose internals for ReadableStream.pipeTo. These are not383  // part of the standard.384  function isWritableStreamErrored(stream) {385    // assert(386    //     IsWritableStream(stream), '! IsWritableStream(stream) is true.');387    return (stream[_stateAndFlags] & STATE_MASK) === ERRORED;388  }389  function isWritableStreamClosingOrClosed(stream) {390    // assert(391    //     IsWritableStream(stream), '! IsWritableStream(stream) is true.');392    return WritableStreamCloseQueuedOrInFlight(stream) ||393        (stream[_stateAndFlags] & STATE_MASK) === CLOSED;394  }395  function getWritableStreamStoredError(stream) {396    // assert(397    //     IsWritableStream(stream), '! IsWritableStream(stream) is true.');398    return stream[_storedError];399  }400  // Expose internals for TransformStream401  function isWritableStreamWritable(stream) {402    // assert(403    //     IsWritableStream(stream), '! IsWritableStream(stream) is true.');404    return  (stream[_stateAndFlags] & STATE_MASK) === WRITABLE;405  }406  function isWritableStreamErroring(stream) {407    // assert(408    //     IsWritableStream(stream), '! IsWritableStream(stream) is true.');409    return  (stream[_stateAndFlags] & STATE_MASK) === ERRORING;410  }411  function getWritableStreamController(stream) {412    // assert(413    //     IsWritableStream(stream), '! IsWritableStream(stream) is true.');414    return stream[_writableStreamController];415  }416  class WritableStreamDefaultWriter {417    constructor(stream) {418      if (!IsWritableStream(stream)) {419        throw new TypeError(streamErrors.illegalConstructor);420      }421      if (IsWritableStreamLocked(stream)) {422        throw new TypeError(streamErrors.illegalConstructor);423      }424      this[_ownerWritableStream] = stream;425      stream[_writer] = this;426      const state = stream[_stateAndFlags] & STATE_MASK;427      switch (state) {428        case WRITABLE: {429          if (!WritableStreamCloseQueuedOrInFlight(stream) &&430              stream[_stateAndFlags] & BACKPRESSURE_FLAG) {431            this[_readyPromise] = v8.createPromise();432          } else {433            this[_readyPromise] = Promise_resolve(undefined);434          }435          this[_closedPromise] = v8.createPromise();436          break;437        }438        case ERRORING: {439          this[_readyPromise] = Promise_reject(stream[_storedError]);440          markPromiseAsHandled(this[_readyPromise]);441          this[_closedPromise] = v8.createPromise();442          break;443        }444        case CLOSED: {445          this[_readyPromise] = Promise_resolve(undefined);446          this[_closedPromise] = Promise_resolve(undefined);447          break;448        }449        default: {450          // assert(state === ERRORED, '_state_ is `"errored"`.');451          const storedError = stream[_storedError];452          this[_readyPromise] = Promise_reject(storedError);453          markPromiseAsHandled(this[_readyPromise]);454          this[_closedPromise] = Promise_reject(storedError);455          markPromiseAsHandled(this[_closedPromise]);456          break;457        }458      }459    }460    get closed() {461      if (!IsWritableStreamDefaultWriter(this)) {462        return Promise_reject(new TypeError(streamErrors.illegalInvocation));463      }464      return this[_closedPromise];465    }466    get desiredSize() {467      if (!IsWritableStreamDefaultWriter(this)) {468        throw new TypeError(streamErrors.illegalInvocation);469      }470      if (this[_ownerWritableStream] === undefined) {471        throw createWriterLockReleasedError(verbUsedToGetTheDesiredSize);472      }473      return WritableStreamDefaultWriterGetDesiredSize(this);474    }475    get ready() {476      if (!IsWritableStreamDefaultWriter(this)) {477        return Promise_reject(new TypeError(streamErrors.illegalInvocation));478      }479      return this[_readyPromise];480    }481    abort(reason) {482      if (!IsWritableStreamDefaultWriter(this)) {483        return Promise_reject(new TypeError(streamErrors.illegalInvocation));484      }485      if (this[_ownerWritableStream] === undefined) {486        return Promise_reject(createWriterLockReleasedError(verbAborted));487      }488      return WritableStreamDefaultWriterAbort(this, reason);489    }490    close() {491      if (!IsWritableStreamDefaultWriter(this)) {492        return Promise_reject(new TypeError(streamErrors.illegalInvocation));493      }494      const stream = this[_ownerWritableStream];495      if (stream === undefined) {496        return Promise_reject(createWriterLockReleasedError(verbClosed));497      }498      if (WritableStreamCloseQueuedOrInFlight(stream)) {499        return Promise_reject(new TypeError(errCloseCloseRequestedStream));500      }501      return WritableStreamDefaultWriterClose(this);502    }503    releaseLock() {504      if (!IsWritableStreamDefaultWriter(this)) {505        throw new TypeError(streamErrors.illegalInvocation);506      }507      const stream = this[_ownerWritableStream];508      if (stream === undefined) {509        return;510      }511      // assert(stream[_writer] !== undefined,512      //        'stream.[[writer]] is not undefined.');513      WritableStreamDefaultWriterRelease(this);514    }515    write(chunk) {516      if (!IsWritableStreamDefaultWriter(this)) {517        return Promise_reject(new TypeError(streamErrors.illegalInvocation));518      }519      if (this[_ownerWritableStream] === undefined) {520        return Promise_reject(createWriterLockReleasedError(verbWrittenTo));521      }522      return WritableStreamDefaultWriterWrite(this, chunk);523    }524  }525  // Writable Stream Writer Abstract Operations526  function IsWritableStreamDefaultWriter(x) {527    return hasOwnPropertyNoThrow(x, _ownerWritableStream);528  }529  function WritableStreamDefaultWriterAbort(writer, reason) {530    const stream = writer[_ownerWritableStream];531    // assert(stream !== undefined,532    //        'stream is not undefined.');533    return WritableStreamAbort(stream, reason);534  }535  function WritableStreamDefaultWriterClose(writer) {536    const stream = writer[_ownerWritableStream];537    // assert(stream !== undefined, 'stream is not undefined.');538    const state = stream[_stateAndFlags] & STATE_MASK;539    if (state === CLOSED || state === ERRORED) {540      return Promise_reject(541          createCannotActionOnStateStreamError('close', state));542    }543    // assert(state === WRITABLE || state === ERRORING,544    //        '_state_ is `"writable"` or `"erroring"`.');545    // assert(!WritableStreamCloseQueuedOrInFlight(stream),546    //        '! WritableStreamCloseQueuedOrInFlight(_stream_) is *false*.');547    const promise = v8.createPromise();548    stream[_closeRequest] = promise;549    if ((stream[_stateAndFlags] & BACKPRESSURE_FLAG) && state === WRITABLE) {550      resolvePromise(writer[_readyPromise], undefined);551    }552    WritableStreamDefaultControllerClose(stream[_writableStreamController]);553    return promise;554  }555  function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) {556    const stream = writer[_ownerWritableStream];557    // assert(stream !== undefined, 'stream is not undefined.');558    const state = stream[_stateAndFlags] & STATE_MASK;559    if (WritableStreamCloseQueuedOrInFlight(stream) || state === CLOSED) {560      return Promise_resolve(undefined);561    }562    if (state === ERRORED) {563      return Promise_reject(stream[_storedError]);564    }565    // assert(state === WRITABLE || state === ERRORING,566    //        '_state_ is `"writable"` or `"erroring"`.');567    return WritableStreamDefaultWriterClose(writer);568  }569  function WritableStreamDefaultWriterEnsureClosedPromiseRejected(570      writer, error) {571    if (promiseState(writer[_closedPromise]) === v8.kPROMISE_PENDING) {572      rejectPromise(writer[_closedPromise], error);573    } else {574      writer[_closedPromise] = Promise_reject(error);575    }576    markPromiseAsHandled(writer[_closedPromise]);577  }578  function WritableStreamDefaultWriterEnsureReadyPromiseRejected(579      writer, error) {580    if (promiseState(writer[_readyPromise]) === v8.kPROMISE_PENDING) {581      rejectPromise(writer[_readyPromise], error);582    } else {583      writer[_readyPromise] = Promise_reject(error);584    }585    markPromiseAsHandled(writer[_readyPromise]);586  }587  function WritableStreamDefaultWriterGetDesiredSize(writer) {588    const stream = writer[_ownerWritableStream];589    const state = stream[_stateAndFlags] & STATE_MASK;590    if (state === ERRORED || state === ERRORING) {591      return null;592    }593    if (state === CLOSED) {594      return 0;595    }596    return WritableStreamDefaultControllerGetDesiredSize(597        stream[_writableStreamController]);598  }599  function WritableStreamDefaultWriterRelease(writer) {600    const stream = writer[_ownerWritableStream];601    // assert(stream !== undefined,602    //        'stream is not undefined.');603    // assert(stream[_writer] === writer,604    //        'stream.[[writer]] is writer.');605    const releasedError = new TypeError(errReleasedWriterClosedPromise);606    WritableStreamDefaultWriterEnsureReadyPromiseRejected(607        writer, releasedError);608    WritableStreamDefaultWriterEnsureClosedPromiseRejected(609        writer, releasedError);610    stream[_writer] = undefined;611    writer[_ownerWritableStream] = undefined;612  }613  function WritableStreamDefaultWriterWrite(writer, chunk) {614    const stream = writer[_ownerWritableStream];615    // assert(stream !== undefined, 'stream is not undefined.');616    const controller = stream[_writableStreamController];617    const chunkSize =618          WritableStreamDefaultControllerGetChunkSize(controller, chunk);619    if (stream !== writer[_ownerWritableStream]) {620      return Promise_reject(createWriterLockReleasedError(verbWrittenTo));621    }622    const state = stream[_stateAndFlags] & STATE_MASK;623    if (state === ERRORED) {624      return Promise_reject(stream[_storedError]);625    }626    if (WritableStreamCloseQueuedOrInFlight(stream)) {627      return Promise_reject(new TypeError(628          templateErrorCannotActionOnStateStream('write to', 'closing')));629    }630    if (state === CLOSED) {631      return Promise_reject(632          createCannotActionOnStateStreamError('write to', CLOSED));633    }634    if (state === ERRORING) {635      return Promise_reject(stream[_storedError]);636    }637    // assert(state === WRITABLE, '_state_ is `"writable"`');638    const promise = WritableStreamAddWriteRequest(stream);639    WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);640    return promise;641  }642  // Functions to expose internals for ReadableStream.pipeTo. These do not643  // appear in the standard.644  function getWritableStreamDefaultWriterClosedPromise(writer) {645    // assert(646    //     IsWritableStreamDefaultWriter(writer),647    //     'writer is a WritableStreamDefaultWriter.');648    return writer[_closedPromise];649  }650  function getWritableStreamDefaultWriterReadyPromise(writer) {651    // assert(652    //     IsWritableStreamDefaultWriter(writer),653    //     'writer is a WritableStreamDefaultWriter.');654    return writer[_readyPromise];655  }656  class WritableStreamDefaultController {657    constructor(stream, underlyingSink, size, highWaterMark) {658      if (!IsWritableStream(stream)) {659        throw new TypeError(streamErrors.illegalConstructor);660      }661      if (stream[_writableStreamController] !== undefined) {662        throw new TypeError(streamErrors.illegalConstructor);663      }664      this[_controlledWritableStream] = stream;665      this[_underlyingSink] = underlyingSink;666      // These are just initialised to avoid triggering the assert() in667      // ResetQueue. They are overwritten by ResetQueue().668      this[_queue] = undefined;669      this[_queueTotalSize] = undefined;670      ResetQueue(this);671      this[_started] = false;672      const normalizedStrategy =673            ValidateAndNormalizeQueuingStrategy(size, highWaterMark);674      this[_strategySize] = normalizedStrategy.size;675      this[_strategyHWM] = normalizedStrategy.highWaterMark;676      const backpressure = WritableStreamDefaultControllerGetBackpressure(this);677      WritableStreamUpdateBackpressure(stream, backpressure);678    }679    error(e) {680      if (!IsWritableStreamDefaultController(this)) {681        throw new TypeError(streamErrors.illegalInvocation);682      }683      const state =684            this[_controlledWritableStream][_stateAndFlags] & STATE_MASK;685      if (state !== WRITABLE) {686        return;687      }688      WritableStreamDefaultControllerError(this, e);689    }690  }691  // Writable Stream Default Controller Internal Methods692  // TODO(ricea): Virtual dispatch via V8 Private Symbols seems to be difficult693  // or impossible, so use static dispatch for now. This will have to be fixed694  // when adding a byte controller.695  function WritableStreamDefaultControllerAbortSteps(controller, reason) {696    return PromiseCallOrNoop1(controller[_underlyingSink], 'abort', reason,697                              'underlyingSink.abort');698  }699  function WritableStreamDefaultControllerErrorSteps(controller) {700    ResetQueue(controller);701  }702  function WritableStreamDefaultControllerStartSteps(controller) {703    const startResult = CallOrNoop1(controller[_underlyingSink], 'start',704                                    controller, 'underlyingSink.start');705    const stream = controller[_controlledWritableStream];706    const startPromise = Promise_resolve(startResult);707    thenPromise(708        startPromise,709        () => {710          // const state = stream[_stateAndFlags] & STATE_MASK;711          // assert(state === WRITABLE || state === ERRORING,712          //        '_stream_.[[state]] is `"writable"` or `"erroring"`');713          controller[_started] = true;714          WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);715        },716        r => {717          // const state = stream[_stateAndFlags] & STATE_MASK;718          // assert(state === WRITABLE || state === ERRORING,719          //        '_stream_.[[state]] is `"writable"` or `"erroring"`');720          controller[_started] = true;721          WritableStreamDealWithRejection(stream, r);722        });723  }724  // Writable Stream Default Controller Abstract Operations725  function IsWritableStreamDefaultController(x) {726    return hasOwnPropertyNoThrow(x, _underlyingSink);727  }728  function WritableStreamDefaultControllerClose(controller) {729    EnqueueValueWithSize(controller, 'close', 0);730    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);731  }732  function WritableStreamDefaultControllerGetChunkSize(controller, chunk) {733    const strategySize = controller[_strategySize];734    if (strategySize === undefined) {735      return 1;736    }737    let value;738    try {739      value = Function_call(strategySize, undefined, chunk);740    } catch (e) {741      WritableStreamDefaultControllerErrorIfNeeded(controller, e);742      return 1;743    }744    return value;745  }746  function WritableStreamDefaultControllerGetDesiredSize(controller) {747    return controller[_strategyHWM] - controller[_queueTotalSize];748  }749  function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) {750    const writeRecord = {chunk};751    try {752      EnqueueValueWithSize(controller, writeRecord, chunkSize);753    } catch (e) {754      WritableStreamDefaultControllerErrorIfNeeded(controller, e);755      return;756    }757    const stream = controller[_controlledWritableStream];758    if (!WritableStreamCloseQueuedOrInFlight(stream) &&759        (stream[_stateAndFlags] & STATE_MASK) === WRITABLE) {760      const backpressure =761            WritableStreamDefaultControllerGetBackpressure(controller);762      WritableStreamUpdateBackpressure(stream, backpressure);763    }764    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);765  }766  function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) {767    const stream = controller[_controlledWritableStream];768    if (!controller[_started]) {769      return;770    }771    if (stream[_inFlightWriteRequest] !== undefined) {772      return;773    }774    const state = stream[_stateAndFlags] & STATE_MASK;775    if (state === CLOSED || state === ERRORED) {776      return;777    }778    if (state === ERRORING) {779      WritableStreamFinishErroring(stream);780      return;781    }782    if (controller[_queue].length === 0) {783      return;784    }785    const writeRecord = PeekQueueValue(controller);786    if (writeRecord === 'close') {787      WritableStreamDefaultControllerProcessClose(controller);788    } else {789      WritableStreamDefaultControllerProcessWrite(790          controller, writeRecord.chunk);791    }792  }793  function WritableStreamDefaultControllerErrorIfNeeded(controller, error) {794    const state =795          controller[_controlledWritableStream][_stateAndFlags] & STATE_MASK;796    if (state === WRITABLE) {797      WritableStreamDefaultControllerError(controller, error);798    }799  }800  function WritableStreamDefaultControllerProcessClose(controller) {801    const stream = controller[_controlledWritableStream];802    WritableStreamMarkCloseRequestInFlight(stream);803    DequeueValue(controller);804    // assert(controller[_queue].length === 0,805    //        'controller.[[queue]] is empty.');806    const sinkClosePromise =807          PromiseCallOrNoop0(controller[_underlyingSink], 'close',808                             'underlyingSink.close');809    thenPromise(810        sinkClosePromise, () => WritableStreamFinishInFlightClose(stream),811        reason => WritableStreamFinishInFlightCloseWithError(stream, reason));812  }813  function WritableStreamDefaultControllerProcessWrite(controller, chunk) {814    const stream = controller[_controlledWritableStream];815    WritableStreamMarkFirstWriteRequestInFlight(stream);816    const sinkWritePromise = PromiseCallOrNoop2(817        controller[_underlyingSink], 'write', chunk, controller,818        'underlyingSink.write');819    thenPromise(820        sinkWritePromise,821        () => {822          WritableStreamFinishInFlightWrite(stream);823          const state = stream[_stateAndFlags] & STATE_MASK;824          // assert(state === WRITABLE || state === ERRORING,825          //        '_state_ is `"writable"` or `"erroring"`');826          DequeueValue(controller);827          if (!WritableStreamCloseQueuedOrInFlight(stream) &&828              state === WRITABLE) {829            const backpressure =830                  WritableStreamDefaultControllerGetBackpressure(controller);831            WritableStreamUpdateBackpressure(stream, backpressure);832          }833          WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);834        },835        reason => {836          WritableStreamFinishInFlightWriteWithError(stream, reason);837        });838  }839  function WritableStreamDefaultControllerGetBackpressure(controller) {840    const desiredSize =841          WritableStreamDefaultControllerGetDesiredSize(controller);...

pipe.ts

Source:pipe.ts

...136        shutdown();137      }138    });139    // Closing must be propagated backward140    if (WritableStreamCloseQueuedOrInFlight(dest) || dest._state === 'closed') {141      const destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');142      if (!preventCancel) {143        shutdownWithAction(() => ReadableStreamCancel(source, destClosed), true, destClosed);144      } else {145        shutdown(true, destClosed);146      }147    }148    setPromiseIsHandledToTrue(pipeLoop());149    function waitForWritesToFinish(): Promise<void> {150      // Another write may have started while we were waiting on this currentWrite, so we have to be sure to wait151      // for that too.152      const oldCurrentWrite = currentWrite;153      return PerformPromiseThen(154        currentWrite,155        () => oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined156      );157    }158    function isOrBecomesErrored(stream: ReadableStream | WritableStream,159                                promise: Promise<void>,160                                action: (reason: any) => void) {161      if (stream._state === 'errored') {162        action(stream._storedError);163      } else {164        uponRejection(promise, action);165      }166    }167    function isOrBecomesClosed(stream: ReadableStream | WritableStream, promise: Promise<void>, action: () => void) {168      if (stream._state === 'closed') {169        action();170      } else {171        uponFulfillment(promise, action);172      }173    }174    function shutdownWithAction(action: () => Promise<unknown>, originalIsError?: boolean, originalError?: any) {175      if (shuttingDown) {176        return;177      }178      shuttingDown = true;179      if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {180        uponFulfillment(waitForWritesToFinish(), doTheRest);181      } else {182        doTheRest();183      }184      function doTheRest() {185        uponPromise(186          action(),187          () => finalize(originalIsError, originalError),188          newError => finalize(true, newError)189        );190      }191    }192    function shutdown(isError?: boolean, error?: any) {193      if (shuttingDown) {194        return;195      }196      shuttingDown = true;197      if (dest._state === 'writable' && !WritableStreamCloseQueuedOrInFlight(dest)) {198        uponFulfillment(waitForWritesToFinish(), () => finalize(isError, error));199      } else {200        finalize(isError, error);201      }202    }203    function finalize(isError?: boolean, error?: any) {204      WritableStreamDefaultWriterRelease(writer);205      ReadableStreamReaderGenericRelease(reader);206      if (signal !== undefined) {207        signal.removeEventListener('abort', abortAlgorithm);208      }209      if (isError) {210        reject(error);211      } else {...

Using AI Code Generation

1const { ReadableStream, WritableStream } = require('stream/web');2const rs = new ReadableStream({3  pull(controller) {4    controller.enqueue('a');5    controller.close();6  }7});8const ws = new WritableStream({9  write(chunk) {10    return new Promise(resolve => setTimeout(resolve, 1000));11  }12});13const writer = ws.getWriter();14const reader = rs.getReader();15const start = Date.now();16writer.write('a').then(() => {17  console.log(`the first write() finished after ${Date.now() - start}ms`);18});19writer.close();20reader.read().then(console.log);21reader.read().then(console.log);22reader.read().then(console.log);23writer.write('a').then(() => {24  console.log(`the second write() finished after ${Date.now() - start}ms`);25});26The example above shows how the second write() after the writer closes27partial interface WritableStreamDefaultWriter {28  [EnforceRange] readonly attribute long long? desiredSize;29};30<dfn method for="WritableStreamDefaultWriter">getDesiredSize(|this|)</dfn> can31function shouldApplyBackpressure(writer) {32  const desiredSize = writer.desiredSize;33  if (desiredSize === null) {34    return true;35  }36  assert(desiredSize !== undefined);37  return desiredSize <= 0;38}39partial interface WritableStreamDefaultWriter {40  Promise<void> close();41};42<dfn method for="WritableStreamDefaultWriter">close(|this|)</dfn> closes the

Using AI Code Generation

1var rs = new ReadableStream({2  start(controller) {3    controller.enqueue("a");4    controller.close();5  }6});7var ws = new WritableStream({8  write(chunk) {9    return new Promise(resolve => {10      setTimeout(resolve, 100);11    });12  }13});14var writer = ws.getWriter();15var reader = rs.getReader();16var read = reader.read();17var write = writer.write("a");18Promise.all([read, write]).then(() => {19  console.log("done");20});21var ws = new WritableStream();22var writer = ws.getWriter();23writer.write("a");24writer.close();25var ws = new WritableStream({26  write() {27    return Promise.reject("oh no");28  }29});30var writer = ws.getWriter();31writer.write("a").catch(() => console.log("write rejected"));32writer.close().catch(() => console.log("close rejected"));33var ws = new WritableStream();34var writer = ws.getWriter();35writer.releaseLock();36writer.write("a").catch(() => console.log("write rejected"));37writer.close().catch(() => console.log("close rejected"));38var ws = new WritableStream();39var writer = ws.getWriter();40writer.write("a");41writer.write("b");42writer.write("c");43var ws = new WritableStream({44  write() {45    return Promise.reject("oh no");46  }47});48var writer = ws.getWriter();49writer.write("a").catch(() => console.log("write rejected"));50writer.write("b").catch(() => console.log("write rejected"));51writer.write("c").catch(() => console.log("write rejected"));52var ws = new WritableStream();53var writer = ws.getWriter();54writer.close();55writer.write("a").catch(() => console.log("write rejected"));56writer.write("b").catch(() => console.log("write rejected"));57writer.write("c").catch(() => console.log("write rejected"));

Using AI Code Generation

1var rs = new ReadableStream({2  start(controller) {3    controller.enqueue(new Uint8Array([0, 1, 2]));4    controller.close();5  }6});7var writer = rs.getWriter();8writer.closed.then(() => console.log("closed!"));9writer.releaseLock();10var rs = new ReadableStream({11  start(controller) {12    controller.enqueue(new Uint8Array([0, 1, 2]));13    controller.close();14  }15});16var writer = rs.getWriter();17writer.closed.then(() => console.log("closed!"));18writer.releaseLock();19var rs = new ReadableStream({20  start(controller) {21    controller.enqueue(new Uint8Array([0, 1, 2]));22    controller.close();23  }24});25var writer = rs.getWriter();26writer.closed.then(() => console.log("closed!"));27writer.releaseLock();28var rs = new ReadableStream({29  start(controller) {30    controller.enqueue(new Uint8Array([0, 1, 2]));31    controller.close();32  }33});34var writer = rs.getWriter();35writer.closed.then(() => console.log("closed!"));36writer.releaseLock();37var rs = new ReadableStream({38  start(controller) {39    controller.enqueue(new Uint8Array([0, 1, 2]));40    controller.close();41  }42});43var writer = rs.getWriter();44writer.closed.then(() => console.log("closed!"));45writer.releaseLock();46var rs = new ReadableStream({47  start(controller) {48    controller.enqueue(new Uint8Array([0, 1, 2]));49    controller.close();50  }51});52var writer = rs.getWriter();53writer.closed.then(() => console.log("closed!"));54writer.releaseLock();

Using AI Code Generation

1import { WritableStreamCloseQueuedOrInFlight } from "streams/writable-streams/close-queued-or-in-flight.js";2import { WritableStream } from "streams/writable-streams/writable-stream.js";3import { CreateWritableStream } from "streams/writable-streams/create-writable-stream.js";4import { WritableStreamDefaultWriter } from "streams/writable-streams/writable-stream-default-writer.js";5import { WritableStreamDefaultController } from "streams/writable-streams/writable-stream-default-controller.js";6import { WritableStreamCloseQueuedOrInFlight } from "streams/writable-streams/close-queued-or-in-flight.js";7import { WritableStreamAbortQueuedOrInFlight } from "streams/writable-streams/abort-queued-or-in-flight.js";8import { WritableStreamCloseQueuedOrInFlight } from "streams/writable-streams/close-queued-or-in-flight.js";9import { WritableStreamAbortQueuedOrInFlight } from "streams/writable-streams/abort-queued-or-in-flight.js";10import { WritableStreamCloseQueuedOrInFlight } from "streams/writable-streams/close-queued-or-in-flight.js";11import { WritableStreamAbortQueuedOrInFlight } from "streams/writable-streams/abort-queued-or-in-flight.js";12import { WritableStreamCloseQueuedOrInFlight } from "streams/writable-streams/close-queued-or-in-flight.js";13import { WritableStreamAbortQueuedOrInFlight } from "streams/writable-streams/abort-queued-or-in-flight.js";14import { WritableStreamCloseQueuedOrInFlight } from "streams/writable-streams/close-queued-or-in-flight.js";15import { WritableStreamAbortQueuedOrInFlight } from "streams/writable-streams/abort-queued-or-in-flight.js";16import { WritableStreamAbortQueuedOrInFlight } from "streams/writable-streams/abort-queued-or-in-flight.js";17import { WritableStream } from "streams/writable-streams/writable-stream.js";18import { CreateWritableStream } from "streams/writable-streams/create-writable-stream.js";19import { WritableStreamDefaultWriter } from "streams/writable-streams/writable-stream-default-writer.js";20import { WritableStreamDefaultController }

Using AI Code Generation

1const { WritableStream, CountQueuingStrategy } = require('stream/web');2const { WritableStreamCloseQueuedOrInFlight } = require('stream/web');3const ws = new WritableStream({4  write() {}5}, new CountQueuingStrategy({ highWaterMark: 1 }));6const writer = ws.getWriter();7writer.write('a');8console.log(WritableStreamCloseQueuedOrInFlight(ws));9writer.close();10console.log(WritableStreamCloseQueuedOrInFlight(ws));11writer.releaseLock();12const { WritableStream } = require('stream/web');13const { WritableStreamErrorQueuedOrInFlight } = require('stream/web');14const ws = new WritableStream({15  write() {}16});17const writer = ws.getWriter();18writer.write('a');19console.log(WritableStreamErrorQueuedOrInFlight(ws));20writer.abort();21console.log(WritableStreamErrorQueuedOrInFlight(ws));22writer.releaseLock();23const { WritableStream, CountQueuingStrategy } = require('stream/web');24const { WritableStreamGetDesiredSize } = require('stream/web');25const ws = new WritableStream({26  write() {}27}, new CountQueuingStrategy({ highWaterMark: 1 }));

Using AI Code Generation

1const { WritableStreamCloseQueuedOrInFlight } = require('wpt');2const stream = new WritableStream();3WritableStreamCloseQueuedOrInFlight(stream);4const stream = new WritableStream();5WritableStreamCloseQueuedOrInFlight(stream);6const stream = new WritableStream();7WritableStreamCloseQueuedOrInFlight(stream);8const stream = new WritableStream();9WritableStreamCloseQueuedOrInFlight(stream);10const stream = new WritableStream();11WritableStreamCloseQueuedOrInFlight(stream);12const stream = new WritableStream();13WritableStreamCloseQueuedOrInFlight(stream);14const stream = new WritableStream();15WritableStreamCloseQueuedOrInFlight(stream);16const stream = new WritableStream();17WritableStreamCloseQueuedOrInFlight(stream);18const stream = new WritableStream();19WritableStreamCloseQueuedOrInFlight(stream);20const stream = new WritableStream();21WritableStreamCloseQueuedOrInFlight(stream);22const stream = new WritableStream();23WritableStreamCloseQueuedOrInFlight(stream);24const stream = new WritableStream();25WritableStreamCloseQueuedOrInFlight(stream);

Using AI Code Generation

1var ws = new WritableStream({2    write(chunk, controller) {3    }4});5ws.write(1);6ws.close();7assert_equals(ws.state, 'closing');8assert_equals(ws.write(1), false);9assert_equals(ws.state, 'closing');10assert_equals(ws.write(2), false);11assert_equals(ws.state, 'closing');12assert_equals(ws.write(3), false);13assert_equals(ws.state, 'closing');14assert_equals(ws.write(4), false);15assert_equals(ws.state, 'closing');16assert_equals(ws.write(5), false);17assert_equals(ws.state, 'closing');18assert_equals(ws.write(6), false);19assert_equals(ws.state, 'closing');20assert_equals(ws.write(7), false);21assert_equals(ws.state, 'closing');22assert_equals(ws.write(8), false);23assert_equals(ws.state, 'closing');24assert_equals(ws.write(9), false);25assert_equals(ws.state, 'closing');26assert_equals(ws.write(10), false);27assert_equals(ws.state, 'closing');28assert_equals(ws.write(11), false);29assert_equals(ws.state, 'closing');30assert_equals(ws.write(12), false);31assert_equals(ws.state, 'closing');32assert_equals(ws.write(13), false);33assert_equals(ws.state, 'closing');34assert_equals(ws.write(14), false);35assert_equals(ws.state, 'closing');36assert_equals(ws.write(15), false);37assert_equals(ws.state, 'closing');38assert_equals(ws.write(16), false);39assert_equals(ws.state, 'closing');40assert_equals(ws.write(17), false);41assert_equals(ws.state, 'closing');42assert_equals(ws.write(18), false);43assert_equals(ws.state, 'closing');44assert_equals(ws.write(19), false);45assert_equals(ws.state, 'closing');46assert_equals(ws.write(20), false);47assert_equals(ws.state, 'closing');48assert_equals(ws.write(21), false);49assert_equals(ws.state, 'closing');50assert_equals(ws.write(22), false);51assert_equals(ws.state, 'closing');52assert_equals(ws.write(23), false);53assert_equals(ws.state, 'closing');54assert_equals(ws.write(24), false);55assert_equals(ws.state, 'closing');56assert_equals(ws.write(25), false);57assert_equals(ws.state, 'closing');58assert_equals(ws.write(26), false);59assert_equals(ws.state, 'closing');60assert_equals(ws.write(27), false);61assert_equals(ws.state, 'closing');

Using AI Code Generation

1const assert = require('assert');2const { WritableStream } = require('stream/web');3const { WritableStreamCloseQueuedOrInFlight } = require('stream/web');4const { WritableStreamAbortQueuedOrInFlight } = require('stream/web');5const { WritableStreamDefaultControllerClose } = require('stream/web');6const { WritableStreamDefaultControllerError } = require('stream/web');7const ws = new WritableStream({8  write() {}9});10assert.strictEqual(11  WritableStreamCloseQueuedOrInFlight(ws),12);13WritableStreamDefaultControllerClose(14  new WritableStreamDefaultController(ws)15);16assert.strictEqual(17  WritableStreamCloseQueuedOrInFlight(ws),18);19WritableStreamDefaultControllerError(20  new WritableStreamDefaultController(ws),21  new Error('Test')22);23assert.strictEqual(24  WritableStreamCloseQueuedOrInFlight(ws),25);26WritableStreamAbortQueuedOrInFlight(ws);27assert.strictEqual(28  WritableStreamCloseQueuedOrInFlight(ws),29);30WritableStreamDefaultControllerClose(31  new WritableStreamDefaultController(ws)32);33assert.strictEqual(34  WritableStreamCloseQueuedOrInFlight(ws),35);36WritableStreamDefaultControllerClose(37  new WritableStreamDefaultController(ws)38);39assert.strictEqual(40  WritableStreamCloseQueuedOrInFlight(ws),41);

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