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How to use create_ReadableStreamTeeBranch2CancelFunction method in wpt

Best JavaScript code snippet using wpt

readable-stream.js

Source:readable-stream.js

...265  pull._cloneForBranch2 = cloneForBranch2;266  const cancel1 = create_ReadableStreamTeeBranch1CancelFunction();267  cancel1._stream = stream;268  cancel1._teeState = teeState;269  const cancel2 = create_ReadableStreamTeeBranch2CancelFunction();270  cancel2._stream = stream;271  cancel2._teeState = teeState;272  const underlyingSource1 = Object.create(Object.prototype);273  createDataProperty(underlyingSource1, 'pull', pull);274  createDataProperty(underlyingSource1, 'cancel', cancel1);275  const branch1Stream = new ReadableStream(underlyingSource1);276  const underlyingSource2 = Object.create(Object.prototype);277  createDataProperty(underlyingSource2, 'pull', pull);278  createDataProperty(underlyingSource2, 'cancel', cancel2);279  const branch2Stream = new ReadableStream(underlyingSource2);280  pull._branch1 = branch1Stream._readableStreamController;281  pull._branch2 = branch2Stream._readableStreamController;282  reader._closedPromise.catch(r => {283    if (teeState.closedOrErrored === true) {284      return;285    }286    ReadableStreamDefaultControllerError(pull._branch1, r);287    ReadableStreamDefaultControllerError(pull._branch2, r);288    teeState.closedOrErrored = true;289  });290  return [branch1Stream, branch2Stream];291}292function create_ReadableStreamTeePullFunction() {293  function f() {294    const { _reader: reader, _branch1: branch1, _branch2: branch2, _teeState: teeState/* ,295            _cloneForBranch2: cloneForBranch2*/ } = f;296    return ReadableStreamDefaultReaderRead(reader).then(result => {297      assert(typeIsObject(result));298      const value = result.value;299      const done = result.done;300      assert(typeof done === 'boolean');301      if (done === true && teeState.closedOrErrored === false) {302        if (teeState.canceled1 === false) {303          ReadableStreamDefaultControllerClose(branch1);304        }305        if (teeState.canceled2 === false) {306          ReadableStreamDefaultControllerClose(branch2);307        }308        teeState.closedOrErrored = true;309      }310      if (teeState.closedOrErrored === true) {311        return;312      }313      const value1 = value;314      const value2 = value;315      // There is no way to access the cloning code right now in the reference implementation.316      // If we add one then we'll need an implementation for StructuredClone.317      // if (teeState.canceled2 === false && cloneForBranch2 === true) {318      //   value2 = StructuredClone(value2);319      // }320      if (teeState.canceled1 === false) {321        ReadableStreamDefaultControllerEnqueue(branch1, value1);322      }323      if (teeState.canceled2 === false) {324        ReadableStreamDefaultControllerEnqueue(branch2, value2);325      }326    });327  }328  return f;329}330function create_ReadableStreamTeeBranch1CancelFunction() {331  function f(reason) {332    const { _stream: stream, _teeState: teeState } = f;333    teeState.canceled1 = true;334    teeState.reason1 = reason;335    if (teeState.canceled2 === true) {336      const compositeReason = createArrayFromList([teeState.reason1, teeState.reason2]);337      const cancelResult = ReadableStreamCancel(stream, compositeReason);338      teeState._resolve(cancelResult);339    }340    return teeState.promise;341  }342  return f;343}344function create_ReadableStreamTeeBranch2CancelFunction() {345  function f(reason) {346    const { _stream: stream, _teeState: teeState } = f;347    teeState.canceled2 = true;348    teeState.reason2 = reason;349    if (teeState.canceled1 === true) {350      const compositeReason = createArrayFromList([teeState.reason1, teeState.reason2]);351      const cancelResult = ReadableStreamCancel(stream, compositeReason);352      teeState._resolve(cancelResult);353    }354    return teeState.promise;355  }356  return f;357}358// ReadableStream API exposed for controllers....

Using AI Code Generation

1var rs = new ReadableStream({2  start(controller) {3    controller.enqueue('a');4    controller.enqueue('b');5    controller.enqueue('c');6  }7});8var [branch1, branch2] = rs.tee();9var reader1 = branch1.getReader();10var reader2 = branch2.getReader();11var read1 = reader1.read();12var read2 = reader2.read();13read1.then(({ value, done }) => {14  return read2;15}).then(({ value, done }) => {16  return read1;17}).then(({ value, done }) => {18  return read2;19}).then(({ value, done }) => {20  return read1;21}).then(({ value, done }) => {22  return read2;23}).then(({ value, done }) => {24  return read1;25}).then(({ value, done }) => {26  return read2;27}).then(({ value, done }) => {28  return reader1.closed;29}).then(() => {30  console.log('branch1 closed');31  return reader2.closed;32}).then(() => {33  console.log('branch2 closed');34});35var rs = new ReadableStream({36  start(controller) {37    controller.enqueue('a');38    controller.enqueue('b');39    controller.enqueue('c');40  }41});42var [branch1, branch2] = rs.tee();43var reader1 = branch1.getReader();

Using AI Code Generation

1let rs = new ReadableStream({2    start(controller) {3        controller.enqueue('a');4        controller.enqueue('b');5        controller.enqueue('c');6    }7});8let [branch1, branch2] = rs.tee();9let cancelPromise = branch2.cancel('reason');10cancelPromise.then(11    () => console.log('cancelPromise fulfilled'),12    r => console.log('cancelPromise rejected with reason ' + r)13);14branch1.cancel('new reason').then(15    () => console.log('branch1 cancelPromise fulfilled'),16    r => console.log('branch1 cancelPromise rejected with reason ' + r)17);18Thanks for the patch. It looks good, but it doesn't actually fix the test. The problem is that the test calls cancel() on the second branch before the first cancel

Using AI Code Generation

1const { ReadableStream } = require('stream/web');2const { create_ReadableStreamTeeBranch2CancelFunction } = require('stream/web');3const { ReadableStreamDefaultController } = require('stream/web');4const { ReadableStreamDefaultReader } = require('stream/web');5const { ReadableStreamBYOBReader } = require('stream/web');6const { ReadableStreamBYOBRequest } = require('stream/web');7const { ReadableByteStreamController } = require('stream/web');8const { WritableStream } = require('stream/web');9const { WritableStreamDefaultWriter } = require('stream/web');10const { WritableStreamDefaultController } = require('stream/web');11const { WritableByteStreamController } = require('stream/web');12const { ByteLengthQueuingStrategy } = require('stream/web');13const { CountQueuingStrategy } = require('stream/web');14const { TransformStream } = require('stream/web');15const { TransformStreamDefaultController } = require('stream/web');16const { ByteLengthByteSource } = require('stream/web');17const { ReadableStreamTee } = require('stream/web');18const { ReadableStreamDefaultControllerClose } = require('stream/web');19const { ReadableStreamDefaultControllerEnqueue } = require('stream/web');20const { ReadableStreamDefaultControllerError } = require('stream/web');21const { ReadableStreamDefaultControllerGetDesiredSize } = require('stream/web');22const { ReadableStreamDefaultReaderRead } = require('stream/web');23const { ReadableStreamBYOBReaderRead } = require('stream/web');24const { ReadableStreamBYOBRequestRespond } = require('stream/web');25const { ReadableStreamBYOBRequestRespondWithNewView } = require('stream/web');26const { ReadableByteStreamControllerClose } = require('stream/web');27const { ReadableByteStreamControllerEnqueue } = require('stream/web');28const { ReadableByteStreamControllerError } = require('stream/web');29const { ReadableByteStreamControllerGetDesiredSize } = require('stream/web');30const { ReadableByteStreamControllerRespond } = require('stream/web');31const { ReadableByteStreamControllerRespondWithNewView } = require('stream/web');32const { ReadableStreamTeeBranch1 } = require('stream/web');33const { ReadableStreamTeeBranch2 } = require('stream/web');

Using AI Code Generation

1var test = async_test("ReadableStreamTeeBranch2CancelFunction");2var rs = new ReadableStream({3  start: function (controller) {4    controller.enqueue("a");5    controller.enqueue("b");6    controller.enqueue("c");7    controller.close();8  }9});10var reader = rs.getReader();11var cancelPromise = reader.read().then(function (result) {12  assert_equals(result.value, "a", "The first chunk should be read");13  assert_false(result.done, "The stream should not be closed");14  var [branch1, branch2] = rs.tee();15  var branch2Reader = branch2.getReader();16  return branch2Reader.read().then(function (result) {17    assert_equals(result.value, "b", "The second chunk should be read");18    assert_false(result.done, "The stream should not be closed");19    return branch2Reader.read().then(function (result) {20      assert_equals(result.value, "c", "The third chunk should be read");21      assert_false(result.done, "The stream should not be closed");22      return branch2.cancel("reason");23    });24  });25});26test.done();

Using AI Code Generation

1var rs = new ReadableStream({2  start: function(controller) {3    controller.enqueue("a");4    controller.enqueue("b");5    controller.enqueue("c");6  }7});8var [branch1, branch2] = rs.tee();9var reader1 = branch1.getReader();10var reader2 = branch2.getReader();11var read1 = reader1.read();12var read2 = reader2.read();13read2.then(function(result) {14  assert_equals(result.value, "a", "read2 should read the first chunk");15  assert_false(result.done, "read2 should not be done");16  return reader2.cancel();17}).then(function() {18  return read1;19}).then(function(result) {20  assert_equals(result.value, "b", "read1 should read the second chunk");21  assert_false(result.done, "read1 should not be done");22  return reader1.read();23}).then(function(result) {24  assert_equals(result.value, "c", "read1 should read the third chunk");25  assert_false(result.done, "read1 should not be done");26  return reader1.read();27}).then(function(result) {28  assert_true(result.done, "read1 should be done");29});30test(function() {31  var rs = recordingReadableStream();32  var [branch1, branch2] = rs.tee();33  var reader1 = branch1.getReader();34  var reader2 = branch2.getReader();35  var read1 = reader1.read();36  var read2 = reader2.read();37  rs.controller.close();38  return Promise.all([read1, read2]).then(function(results) {39    var result1 = results[0];40    var result2 = results[1];41    assert_true(result1.done, 'read1 should be done');42    assert_true(result2.done, 'read2 should be done');43    assert_array_equals(rs.events, ['close'], 'the stream should be closed');44  });45}, 'Closing a readable stream should close all branches');

Using AI Code Generation

1var test = async_test("Test to check the create_ReadableStreamTeeBranch2CancelFunction method");2var rs = new ReadableStream({3  start: function(controller) {4    controller.enqueue(1);5    controller.enqueue(2);6    controller.enqueue(3);7  }8});9var rs1 = rs.tee()[0];10var rs2 = rs.tee()[1];11rs1.cancel().then(function() {12  test.step(function() {13    assert_equals(rs2.cancelCalled, true, 'cancelCalled should be true');14    assert_equals(rs2.reason, 'cancel', 'reason should be cancel');15  });16  test.done();17});18var test = async_test("Test to check the create_ReadableStreamTeeBranch2CancelFunction method");19var rs = new ReadableStream({20  start: function(controller) {21    controller.enqueue(1);22    controller.enqueue(2);23    controller.enqueue(3);24  }25});26var rs1 = rs.tee()[0];27var rs2 = rs.tee()[1];28rs1.cancel().then(function() {29  test.step(function() {30    assert_equals(rs2.cancelCalled, true, 'cancelCalled should be true');31    assert_equals(rs2.reason, 'cancel', 'reason should be cancel');32  });33  test.done();34});35test(() => {36  const rs = recordingReadableStream();37  const [branch1, branch2] = rs.tee();38  const cancelPromise = branch1.cancel('a reason');39  assert_array_equals(rs.events, ['cancel', 'a reason'], 'the original stream should be canceled');40  assert_array_equals(branch2.events, [], 'the second branch should not have been canceled');41  return cancelPromise;42}, 'canceling the first branch should cancel the original stream');43test(() => {

Using AI Code Generation

1const assert = require('assert');2const { ReadableStream, createReadableStream, 3  ReadableStreamTee } = require('stream/web');4const {5} = require('internal/webstreams/readablestream');6const {7} = require('internal/webstreams/writablestream');8const { ByteLengthQueuingStrategy, CountQueuingStrategy } = require('internal/webstreams/queuingstrategies');9const {10} = require('internal/webstreams/readablestream');11const {12} = require('internal/webstreams/transformstream');13const {

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