How to use WritableStreamHasOperationMarkedInFlight method in wpt

Best JavaScript code snippet using wpt

WritableStream.js

Source:WritableStream.js

...222    const writer = stream[_writer];223    if (writer !== undefined) {224      WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);225    }226    if (!WritableStreamHasOperationMarkedInFlight(stream) &&227        controller[_started]) {228      WritableStreamFinishErroring(stream);229    }230  }231  function WritableStreamFinishErroring(stream) {232    // assert((stream[_stateAndFlags] & STATE_MASK) === ERRORING,233    //        '_stream_.[[state]] is `"erroring"`');234    // assert(!WritableStreamHasOperationMarkedInFlight(stream),235    //        '! WritableStreamHasOperationMarkedInFlight(_stream_) is ' +236    //        '*false*');237    stream[_stateAndFlags] = (stream[_stateAndFlags] & ~STATE_MASK) | ERRORED;238    WritableStreamDefaultControllerErrorSteps(239        stream[_writableStreamController]);240    const storedError = stream[_storedError];241    rejectPromises(stream[_writeRequests], storedError);242    stream[_writeRequests] = new binding.SimpleQueue();243    if (stream[_pendingAbortRequest] === undefined) {244      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);245      return;246    }247    const abortRequest = stream[_pendingAbortRequest];248    stream[_pendingAbortRequest] = undefined;249    if (abortRequest.wasAlreadyErroring === true) {250      rejectPromise(abortRequest.promise, storedError);251      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);252      return;253    }254    const promise = WritableStreamDefaultControllerAbortSteps(255        stream[_writableStreamController], abortRequest.reason);256    thenPromise(257        promise,258        () => {259          resolvePromise(abortRequest.promise, undefined);260          WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);261        },262        reason => {263          rejectPromise(abortRequest.promise, reason);264          WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);265        });266  }267  function WritableStreamFinishInFlightWrite(stream) {268    // assert(stream[_inFlightWriteRequest] !== undefined,269    //        '_stream_.[[inFlightWriteRequest]] is not *undefined*.');270    resolvePromise(stream[_inFlightWriteRequest], undefined);271    stream[_inFlightWriteRequest] = undefined;272  }273  function WritableStreamFinishInFlightWriteWithError(stream, error) {274    // assert(stream[_inFlightWriteRequest] !== undefined,275    //        '_stream_.[[inFlightWriteRequest]] is not *undefined*.');276    rejectPromise(stream[_inFlightWriteRequest], error);277    stream[_inFlightWriteRequest] = undefined;278    // const state = stream[_stateAndFlags] & STATE_MASK;279    // assert(state === WRITABLE || state === ERRORING,280    //        '_stream_.[[state]] is `"writable"` or `"erroring"`');281    WritableStreamDealWithRejection(stream, error);282  }283  function WritableStreamFinishInFlightClose(stream) {284    // assert(stream[_inFlightCloseRequest] !== undefined,285    //        '_stream_.[[inFlightCloseRequest]] is not *undefined*.');286    resolvePromise(stream[_inFlightCloseRequest], undefined);287    stream[_inFlightCloseRequest] = undefined;288    const state = stream[_stateAndFlags] & STATE_MASK;289    // assert(state === WRITABLE || state === ERRORING,290    //        '_stream_.[[state]] is `"writable"` or `"erroring"`');291    if (state === ERRORING) {292      stream[_storedError] = undefined;293      if (stream[_pendingAbortRequest] !== undefined) {294        resolvePromise(stream[_pendingAbortRequest].promise, undefined);295        stream[_pendingAbortRequest] = undefined;296      }297    }298    stream[_stateAndFlags] = (stream[_stateAndFlags] & ~STATE_MASK) | CLOSED;299    const writer = stream[_writer];300    if (writer !== undefined) {301      resolvePromise(writer[_closedPromise], undefined);302    }303    // assert(stream[_pendingAbortRequest] === undefined,304    //        '_stream_.[[pendingAbortRequest]] is *undefined*');305    // assert(stream[_storedError] === undefined,306    //        '_stream_.[[storedError]] is *undefined*');307  }308  function WritableStreamFinishInFlightCloseWithError(stream, error) {309    // assert(stream[_inFlightCloseRequest] !== undefined,310    //        '_stream_.[[inFlightCloseRequest]] is not *undefined*.');311    rejectPromise(stream[_inFlightCloseRequest], error);312    stream[_inFlightCloseRequest] = undefined;313    // const state = stream[_stateAndFlags] & STATE_MASK;314    // assert(state === WRITABLE || state === ERRORING,315    //        '_stream_.[[state]] is `"writable"` or `"erroring"`');316    if (stream[_pendingAbortRequest] !== undefined) {317      rejectPromise(stream[_pendingAbortRequest].promise, error);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*.');...

writable-streams.js

Source:writable-streams.js

...178}179function WritableStreamFinishErroring(stream) {180  verbose('WritableStreamFinishErroring()');181  assert(stream._state === 'erroring');182  assert(WritableStreamHasOperationMarkedInFlight(stream) === false);183  stream._state = 'errored';184  stream._controller[ErrorSteps]();185  const storedError = stream._storedError;186  for (const writeRequest of stream._writeRequests) {187    rejectPromise(writeRequest, storedError);188  }189  stream._writeRequests = [];190  if (stream._pendingAbortRequest === undefined) {191    WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);192    return;193  }194  const abortRequest = stream._pendingAbortRequest;195  stream._pendingAbortRequest = undefined;196  if (abortRequest.wasAlreadyErroring === true) {197    rejectPromise(abortRequest.promise, storedError);198    WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);199    return;200  }201  const promise = stream._controller[AbortSteps](abortRequest.reason);202  uponPromise(203    promise,204    () => {205      resolvePromise(abortRequest.promise);206      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);207    },208    reason => {209      rejectPromise(abortRequest.promise, reason);210      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);211    });212}213function WritableStreamFinishInFlightClose(stream) {214  assert(stream._inFlightCloseRequest !== undefined);215  resolvePromise(stream._inFlightCloseRequest, undefined);216  stream._inFlightCloseRequest = undefined;217  const state = stream._state;218  assert(state === 'writable' || state === 'erroring');219  if (state === 'erroring') {220    // The error was too late to do anything, so it is ignored.221    stream._storedError = undefined;222    if (stream._pendingAbortRequest !== undefined) {223      resolvePromise(stream._pendingAbortRequest.promise, undefined);224      stream._pendingAbortRequest = undefined;225    }226  }227  stream._state = 'closed';228  const writer = stream._writer;229  if (writer !== undefined) {230    resolvePromise(writer._closedPromise, undefined);231  }232  assert(stream._pendingAbortRequest === undefined);233  assert(stream._storedError === undefined);234}235function WritableStreamFinishInFlightCloseWithError(stream, error) {236  assert(stream._inFlightCloseRequest !== undefined);237  rejectPromise(stream._inFlightCloseRequest, error);238  stream._inFlightCloseRequest = undefined;239  assert(stream._state === 'writable' || stream._state === 'erroring');240  // Never execute sink abort() after sink close().241  if (stream._pendingAbortRequest !== undefined) {242    rejectPromise(stream._pendingAbortRequest.promise, error);243    stream._pendingAbortRequest = undefined;244  }245  WritableStreamDealWithRejection(stream, error);246}247function WritableStreamFinishInFlightWrite(stream) {248  assert(stream._inFlightWriteRequest !== undefined);249  resolvePromise(stream._inFlightWriteRequest, undefined);250  stream._inFlightWriteRequest = undefined;251}252function WritableStreamFinishInFlightWriteWithError(stream, error) {253  assert(stream._inFlightWriteRequest !== undefined);254  rejectPromise(stream._inFlightWriteRequest, error);255  stream._inFlightWriteRequest = undefined;256  assert(stream._state === 'writable' || stream._state === 'erroring');257  WritableStreamDealWithRejection(stream, error);258}259function WritableStreamHasOperationMarkedInFlight(stream) {260  if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {261    verbose('WritableStreamHasOperationMarkedInFlight() is false');262    return false;263  }264  verbose('WritableStreamHasOperationMarkedInFlight() is true');265  return true;266}267function WritableStreamMarkCloseRequestInFlight(stream) {268  assert(stream._inFlightCloseRequest === undefined);269  assert(stream._closeRequest !== undefined);270  stream._inFlightCloseRequest = stream._closeRequest;271  stream._closeRequest = undefined;272}273function WritableStreamMarkFirstWriteRequestInFlight(stream) {274  assert(stream._inFlightWriteRequest === undefined);275  assert(stream._writeRequests.length !== 0);276  stream._inFlightWriteRequest = stream._writeRequests.shift();277}278function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) {279  verbose('WritableStreamRejectCloseAndClosedPromiseIfNeeded()');280  assert(stream._state === 'errored');281  if (stream._closeRequest !== undefined) {282    assert(stream._inFlightCloseRequest === undefined);283    rejectPromise(stream._closeRequest, stream._storedError);284    stream._closeRequest = undefined;285  }286  const writer = stream._writer;287  if (writer !== undefined) {288    rejectPromise(writer._closedPromise, stream._storedError);289    setPromiseIsHandledToTrue(writer._closedPromise);290  }291}292function WritableStreamStartErroring(stream, reason) {293  verbose('WritableStreamStartErroring(stream, %o)', reason);294  assert(stream._storedError === undefined);295  assert(stream._state === 'writable');296  const controller = stream._controller;297  assert(controller !== undefined);298  stream._state = 'erroring';299  stream._storedError = reason;300  const writer = stream._writer;301  if (writer !== undefined) {302    WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);303  }304  if (WritableStreamHasOperationMarkedInFlight(stream) === false && controller._started === true) {305    WritableStreamFinishErroring(stream);306  }307}308function WritableStreamUpdateBackpressure(stream, backpressure) {309  assert(stream._state === 'writable');310  assert(WritableStreamCloseQueuedOrInFlight(stream) === false);311  const writer = stream._writer;312  if (writer !== undefined && backpressure !== stream._backpressure) {313    if (backpressure === true) {314      writer._readyPromise = newPromise();315    } else {316      assert(backpressure === false);317      resolvePromise(writer._readyPromise, undefined);318    }...

writable_stream.ts

Source:writable_stream.ts

...188  const { writer } = stream;189  if (writer !== void 0) {190    WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);191  }192  if (!WritableStreamHasOperationMarkedInFlight(stream) && controller.started) {193    WritableStreamFinishErroring(stream);194  }195}196export function WritableStreamFinishErroring(stream: WritableStream) {197  Assert(stream.state === "erroring");198  Assert(!WritableStreamHasOperationMarkedInFlight(stream));199  stream.state = "errored";200  stream.writableStreamController[ErrorSteps]();201  const { storedError } = stream;202  stream.writeRequests.forEach(p => p.reject(storedError));203  stream.writeRequests = [];204  if (stream.pendingAbortRequest === void 0) {205    WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);206    return;207  }208  const abortRequest = stream.pendingAbortRequest;209  stream.pendingAbortRequest = void 0;210  if (abortRequest.wasAlreadyErroring) {211    abortRequest.promise.reject(storedError);212    WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);213    return;214  }215  const promise = stream.writableStreamController[AbortSteps](216    abortRequest.reason217  );218  promise219    .then(() => {220      abortRequest.promise.resolve(void 0);221      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);222    })223    .catch(r => {224      abortRequest.promise.reject(r);225      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);226    });227}228export function WritableStreamFinishInFlightWrite(stream: WritableStream) {229  Assert(stream.inFlightWriteRequest !== void 0);230  stream.inFlightWriteRequest.resolve(void 0);231  stream.inFlightWriteRequest = void 0;232}233export function WritableStreamFinishInFlightWriteWithError(234  stream: WritableStream,235  error236) {237  Assert(stream.inFlightWriteRequest !== void 0);238  stream.inFlightWriteRequest.resolve(void 0);239  stream.inFlightWriteRequest = void 0;240  Assert(stream.state === "writable" || stream.state === "erroring");241  WritableStreamDealWithRejection(stream, error);242}243export function WritableStreamFinishInFlightClose(stream: WritableStream) {244  Assert(stream.inFlightCloseRequest !== void 0);245  stream.inFlightCloseRequest.resolve(void 0);246  stream.inFlightCloseRequest = void 0;247  const { state } = stream;248  Assert(stream.state === "writable" || stream.state === "erroring");249  if (state === "erroring") {250    stream.storedError = void 0;251    if (stream.pendingAbortRequest !== void 0) {252      stream.pendingAbortRequest.promise.resolve(void 0);253      stream.pendingAbortRequest = void 0;254    }255  }256  stream.state = "closed";257  const { writer } = stream;258  if (writer !== void 0) {259    writer.closedPromise.resolve(void 0);260  }261  Assert(stream.pendingAbortRequest === void 0);262  Assert(stream.storedError === void 0);263}264export function WritableStreamFinishInFlightCloseWithError(265  stream: WritableStream,266  error267) {268  Assert(stream.inFlightCloseRequest !== void 0);269  stream.inFlightCloseRequest.resolve(void 0);270  stream.inFlightCloseRequest = void 0;271  Assert(stream.state === "writable" || stream.state === "erroring");272  if (stream.pendingAbortRequest !== void 0) {273    stream.pendingAbortRequest.promise.reject(error);274    stream.pendingAbortRequest = void 0;275  }276  WritableStreamDealWithRejection(stream, error);277}278export function WritableStreamCloseQueuedOrInFlight(stream: WritableStream) {279  return !(280    stream.closeRequest === void 0 || stream.inFlightCloseRequest === void 0281  );282}283export function WritableStreamHasOperationMarkedInFlight(284  stream: WritableStream285) {286  return !(287    stream.inFlightWriteRequest === void 0 &&288    stream.inFlightCloseRequest === void 0289  );290}291export function WritableStreamMarkCloseRequestInFlight(stream: WritableStream) {292  Assert(stream.inFlightCloseRequest === void 0);293  Assert(stream.closeRequest !== void 0);294  stream.inFlightCloseRequest = stream.closeRequest;295  stream.closeRequest = void 0;296}297export function WritableStreamMarkFirstWriteRequestInFlight(...

Using AI Code Generation

1test(function() {2  var ws = new WritableStream();3  assert_false(WritableStreamHasOperationMarkedInFlight(ws));4  var writer = ws.getWriter();5  writer.write();6  assert_true(WritableStreamHasOperationMarkedInFlight(ws));7  writer.releaseLock();8}, 'WritableStreamHasOperationMarkedInFlight should return true when write is called');9test(function() {10  var ws = new WritableStream({11    write() { }12  });13  var writer = ws.getWriter();14  writer.write('a');15  var controller = writer._ownerWritableStream._writableStreamController;16  assert_equals(WritableStreamDefaultControllerGetDesiredSize(controller), 0, 'desired size should be 0');17  writer.releaseLock();18}, 'WritableStreamDefaultControllerGetDesiredSize should return the desired size');19test(function() {20  var theError = new Error('boe');21  var ws = new WritableStream({22    start(c) {23      c.error(theError);24    }25  });26  var writer = ws.getWriter();27  var closedPromise = writer.closed.catch(r => r);28  writer.releaseLock();29  return closedPromise.then(30      r => assert_equals(r, theError, 'closed should be rejected with the error'));31}, 'closing a WritableStream should reject closed with any previously signaled error');32test(function() {33  var theError = new Error('boo');34  var ws = new WritableStream({35    start(c) {36      c.error(theError);37    }38  });39  var writer = ws.getWriter();40  var closedPromise = writer.closed.catch(r => r);41  writer.releaseLock();42  return closedPromise.then(43      r => assert_equals(r, theError, 'closed should be rejected with the error'));44}, 'erroring a WritableStream should reject closed with any previously signaled error');45test(function() {46  var ws = new WritableStream({47    write() { }48  });49  var writer = ws.getWriter();50  var closedPromise = writer.closed;51  writer.write('a');52  writer.releaseLock();53  return closedPromise.then(54      r => assert_equals(r

Using AI Code Generation

1function testWritableStreamHasOperationMarkedInFlight() {2  const ws = new WritableStream();3  assert_true(WritableStreamHasOperationMarkedInFlight(ws) === false, 'WritableStreamHasOperationMarkedInFlight should return false');4  const writer = ws.getWriter();5  writer.write('a');6  assert_true(WritableStreamHasOperationMarkedInFlight(ws) === true, 'WritableStreamHasOperationMarkedInFlight should return true');7  writer.releaseLock();8  assert_true(WritableStreamHasOperationMarkedInFlight(ws) === false, 'WritableStreamHasOperationMarkedInFlight should return false');9}10function assert_true(actual, description) {11  if (actual !== true) {12    throw new Error(description);13  }14}15function WritableStream() {16  this._state = 'writable';17  this._storedError = undefined;18  this._writer = undefined;19  this._writeRequests = [];20  this._inFlightWriteRequest = undefined;21  this._closeRequest = undefined;22  this._inFlightCloseRequest = undefined;23  this._pendingAbortRequest = undefined;24  this._backpressure = false;25}26WritableStream.prototype.getWriter = function() {27  if (this._writer !== undefined) {28    throw new Error('Cannot obtain a writer when already locked to a writer');29  }30  return new WritableStreamDefaultWriter(this);31};32function WritableStreamDefaultWriter(stream) {33  this._ownerWritableStream = stream;34  stream._writer = this;35  const state = stream._state;36  if (state === 'writable') {37    if (!WritableStreamCloseQueuedOrInFlight(stream) && stream._backpressure) {38      this._readyPromise = new Promise(resolve => {39        this._readyPromise_resolve = resolve;40      });41    } else {42      this._readyPromise = Promise.resolve(undefined);43    }44    this._closedPromise = new Promise((resolve, reject) => {45      this._closedPromise_resolve = resolve;46      this._closedPromise_reject = reject;47    });48  } else if (state === 'erroring') {49    this._readyPromise = Promise.reject(stream._storedError);50    setPromiseIsHandledToTrue(this._readyPromise);51    this._closedPromise = new Promise((resolve, reject) => {

Using AI Code Generation

1const assert = require('assert');2const { WritableStream, WritableStreamDefaultWriter } = require('stream/web');3const { WritableStreamHasOperationMarkedInFlight } = require('stream/web').wpt;4const ws = new WritableStream();5const writer = new WritableStreamDefaultWriter(ws);6writer.write('a');7assert(WritableStreamHasOperationMarkedInFlight(ws));8writer.close();9assert(WritableStreamHasOperationMarkedInFlight(ws));10assert(!WritableStreamHasOperationMarkedInFlight(ws));11assert(!WritableStreamHasOperationMarkedInFlight(ws));12const assert = require('assert');13const { WritableStream, WritableStreamDefaultWriter } = require('web-streams-polyfill/ponyfill');14const ws = new WritableStream();15const writer = new WritableStreamDefaultWriter(ws);16writer.write('a');17assert(WritableStreamHasOperationMarkedInFlight(ws));18writer.close();19assert(WritableStreamHasOperationMarkedInFlight(ws));20assert(!WritableStreamHasOperationMarkedInFlight(ws));21assert(!WritableStreamHasOperationMarkedInFlight(ws));

Using AI Code Generation

1var ws = new WritableStream();2var writer = ws.getWriter();3writer.write('a');4writer.close();5var isMarked = WritableStreamHasOperationMarkedInFlight(ws);6if (isMarked === true) {7  console.log('WritableStreamHasOperationMarkedInFlight is true');8} else {9  console.log('WritableStreamHasOperationMarkedInFlight is false');10}11var ws = new WritableStream();12var writer = ws.getWriter();13writer.write('a');14writer.close();15var isMarked = WritableStreamHasOperationMarkedInFlight(ws);16if (isMarked === true) {17  console.log('WritableStreamHasOperationMarkedInFlight is true');18} else {19  console.log('WritableStreamHasOperationMarkedInFlight is false');20}

Using AI Code Generation

1var wpt = require("wpt");2var w = new wpt.WritableStream();3w.write("a");4w.write("b");5w.close();6var result = wpt.WritableStreamHasOperationMarkedInFlight(w);7console.log(result);8wpt.WritableStreamHasOperationMarkedInFlight(writableStream);9var wpt = require("wpt");10var w = new wpt.WritableStream();11w.write("a");12w.write("b");13w.close();14var result = wpt.WritableStreamHasOperationMarkedInFlight(w);15console.log(result);16Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari Basic support Not supported Not supported Not supported Not supported Not supported Not supported17Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Basic support Not supported Not supported Not supported Not supported Not supported Not supported

Using AI Code Generation

1const { WritableStream, WritableStreamDefaultWriter } = require('@open-web-perf/wpt-adapter')2const stream = new WritableStream()3const writer = new WritableStreamDefaultWriter(stream)4console.log(writer.WritableStreamHasOperationMarkedInFlight())5writer.write('a')6console.log(writer.WritableStreamHasOperationMarkedInFlight())7writer.write('b')8console.log(writer.WritableStreamHasOperationMarkedInFlight())9writer.close()10console.log(writer.WritableStreamHasOperationMarkedInFlight())11writer.releaseLock()12console.log(writer.WritableStreamHasOperationMarkedInFlight())13const { WritableStream, WritableStreamDefaultWriter } = require('@open-web-perf/wpt-adapter')14const stream = new WritableStream()15const writer = new WritableStreamDefaultWriter(stream)16console.log(writer.WritableStreamDefaultWriterGetDesiredSize())17writer.write('a')18console.log(writer.WritableStreamDefaultWriterGetDesiredSize())19writer.write('b')20console.log(writer.WritableStreamDefaultWriterGetDesiredSize())21writer.close()22console.log(writer.WritableStreamDefaultWriterGetDesiredSize())23writer.releaseLock()24console.log(writer.WritableStreamDefaultWriterGetDesiredSize())25const { WritableStream, WritableStreamDefaultWriter } = require('@open-web-perf/wpt-adapter')26const stream = new WritableStream({27  write(chunk) {28    return new Promise((resolve, reject) => {29      setTimeout(() => {30        reject(new Error('error'))31      }, 1000)32    })33  }34})35const writer = new WritableStreamDefaultWriter(stream)36writer.write('a')37writer.write('b')38writer.write('c')39writer.WritableStreamDefaultWriterCloseWithErrorPropagation()40const { WritableStream, WritableStreamDefaultWriter } = require('@open-web-perf/wpt-adapter')41const stream = new WritableStream()

Using AI Code Generation

1var test = async_test("WritableStreamHasOperationMarkedInFlight method of2writable stream test");3var ws = new WritableStream();4test.step(function() {5  assert_false(ws.WritableStreamHasOperationMarkedInFlight());6  test.done();7});

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