How to use TransformStreamReadableReadyPromise method in wpt

Best JavaScript code snippet using wpt

transform-stream.js

Source:transform-stream.js

...82  }83}84// Used for preventing the next write() call on TransformStreamSink until there85// is no longer backpressure.86function TransformStreamReadableReadyPromise(transformStream) {87  assert(transformStream._backpressureChangePromise !== undefined,88         '_backpressureChangePromise should have been initialized');89  if (transformStream._backpressure === false) {90    return Promise.resolve();91  }92  assert(transformStream._backpressure === true, '_backpressure should have been initialized');93  return transformStream._backpressureChangePromise;94}95function TransformStreamSetBackpressure(transformStream, backpressure) {96  // console.log(`TransformStreamSetBackpressure(${backpressure})`);97  // Passes also when called during construction.98  assert(transformStream._backpressure !== backpressure,99         'TransformStreamSetBackpressure() should be called only when backpressure is changed');100  if (transformStream._backpressureChangePromise !== undefined) {101    // The fulfillment value is just for a sanity check.102    transformStream._backpressureChangePromise_resolve(backpressure);103  }104  transformStream._backpressureChangePromise = new Promise(resolve => {105    transformStream._backpressureChangePromise_resolve = resolve;106  });107  transformStream._backpressureChangePromise.then(resolution => {108    assert(resolution !== backpressure,109           '_backpressureChangePromise should be fulfilled only when backpressure is changed');110  });111  transformStream._backpressure = backpressure;112}113function TransformStreamDefaultTransform(chunk, transformStreamController) {114  const transformStream = transformStreamController._controlledTransformStream;115  TransformStreamEnqueueToReadable(transformStream, chunk);116  return Promise.resolve();117}118function TransformStreamTransform(transformStream, chunk) {119  // console.log('TransformStreamTransform()');120  assert(transformStream._errored === false);121  assert(transformStream._transforming === false);122  assert(transformStream._backpressure === false);123  transformStream._transforming = true;124  const transformer = transformStream._transformer;125  const controller = transformStream._transformStreamController;126  const transformPromise = PromiseInvokeOrPerformFallback(transformer, 'transform', [chunk, controller],127                             TransformStreamDefaultTransform, [chunk, controller]);128  return transformPromise.then(129    () => {130      transformStream._transforming = false;131      return TransformStreamReadableReadyPromise(transformStream);132    },133    e => {134      TransformStreamErrorIfNeeded(transformStream, e);135      return Promise.reject(e);136    });137}138function IsTransformStreamDefaultController(x) {139  if (!typeIsObject(x)) {140    return false;141  }142  if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {143    return false;144  }145  return true;146}147function IsTransformStream(x) {148  if (!typeIsObject(x)) {149    return false;150  }151  if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {152    return false;153  }154  return true;155}156class TransformStreamSink {157  constructor(transformStream, startPromise) {158    this._transformStream = transformStream;159    this._startPromise = startPromise;160  }161  start(c) {162    const transformStream = this._transformStream;163    transformStream._writableController = c;164    return this._startPromise.then(() => TransformStreamReadableReadyPromise(transformStream));165  }166  write(chunk) {167    // console.log('TransformStreamSink.write()');168    const transformStream = this._transformStream;169    return TransformStreamTransform(transformStream, chunk);170  }171  abort() {172    const transformStream = this._transformStream;173    transformStream._writableDone = true;174    TransformStreamErrorInternal(transformStream, new TypeError('Writable side aborted'));175  }176  close() {177    // console.log('TransformStreamSink.close()');178    const transformStream = this._transformStream;...

transform-stream-polyfill.js

Source:transform-stream-polyfill.js

...73  }74}75// Used for preventing the next write() call on TransformStreamSink until there76// is no longer backpressure.77function TransformStreamReadableReadyPromise(transformStream) {78  if (transformStream._backpressure === false) {79    return Promise.resolve();80  }81  return transformStream._backpressureChangePromise;82}83function TransformStreamSetBackpressure(transformStream, backpressure) {84  // Passes also when called during construction.85  if (transformStream._backpressureChangePromise !== undefined) {86    // The fulfillment value is just for a sanity check.87    transformStream._backpressureChangePromise_resolve(backpressure);88  }89  transformStream._backpressureChangePromise = new Promise(resolve => {90    transformStream._backpressureChangePromise_resolve = resolve;91  });92  transformStream._backpressureChangePromise.then(resolution => {93  });94  transformStream._backpressure = backpressure;95}96function TransformStreamDefaultTransform(chunk, transformStreamController) {97  const transformStream = transformStreamController._controlledTransformStream;98  TransformStreamEnqueueToReadable(transformStream, chunk);99  return Promise.resolve();100}101function TransformStreamTransform(transformStream, chunk) {102  transformStream._transforming = true;103  const transformer = transformStream._transformer;104  const controller = transformStream._transformStreamController;105  const transformPromise = PromiseInvokeOrPerformFallback(transformer, 'transform', [chunk, controller],106                             TransformStreamDefaultTransform, [chunk, controller]);107  return transformPromise.then(108    () => {109      transformStream._transforming = false;110      return TransformStreamReadableReadyPromise(transformStream);111    },112    e => {113      TransformStreamErrorIfNeeded(transformStream, e);114      return Promise.reject(e);115    });116}117function IsTransformStreamDefaultController(x) {118  if (!typeIsObject(x)) {119    return false;120  }121  if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {122    return false;123  }124  return true;125}126function IsTransformStream(x) {127  if (!typeIsObject(x)) {128    return false;129  }130  if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {131    return false;132  }133  return true;134}135class TransformStreamSink {136  constructor(transformStream, startPromise) {137    this._transformStream = transformStream;138    this._startPromise = startPromise;139  }140  start(c) {141    const transformStream = this._transformStream;142    transformStream._writableController = c;143    return this._startPromise.then(() => TransformStreamReadableReadyPromise(transformStream));144  }145  write(chunk) {146    const transformStream = this._transformStream;147    return TransformStreamTransform(transformStream, chunk);148  }149  abort() {150    const transformStream = this._transformStream;151    transformStream._writableDone = true;152    TransformStreamErrorInternal(transformStream, new TypeError('Writable side aborted'));153  }154  close() {155    const transformStream = this._transformStream;156    transformStream._writableDone = true;157    const flushPromise = PromiseInvokeOrNoop(transformStream._transformer,...

Using AI Code Generation

1var TransformStream = require('stream/web').TransformStream;2var readableStrategy = new CountQueuingStrategy({ highWaterMark: 1 });3var writableStrategy = new CountQueuingStrategy({ highWaterMark: 1 });4var ts = new TransformStream({}, { readableStrategy, writableStrategy });5var reader = ts.readable.getReader();6var writer = ts.writable.getWriter();7writer.write('a');8writer.write('b');9var readPromise = reader.read();10readPromise.then(function(result) {11  console.log(result.value);12  console.log(result.done);13});14writer.write('c');15readPromise.then(function(result) {16  console.log(result.value);17  console.log(result.done);18});19This is because the first readPromise is resolved when writer.write('a') is

Using AI Code Generation

1import { TransformStreamReadableReadyPromise } from './transform-stream.js';2import { TransformStreamWritableReadyPromise } from './transform-stream.js';3import { TransformStreamDefaultControllerEnqueue } from './transform-stream.js';4import { TransformStreamDefaultControllerError } from './transform-stream.js';5import { TransformStreamDefaultControllerTerminate } from './transform-stream.js';6import { TransformStreamDefaultControllerClearAlgorithms } from './transform-stream.js';7import { ReadableStream, ReadableStreamDefaultReader } from './readable-stream.js';8import { WritableStream } from './writable-stream.js';9export class TransformStream {10  constructor(transformer = {}) {11    const writableStrategy = transformer.writableStrategy;12    const readableStrategy = transformer.readableStrategy;13    let startPromise_resolve;14    const startPromise = new Promise(resolve => {15      startPromise_resolve = resolve;16    });17    this._backpressurePromise = new Promise(resolve => {18      this._backpressurePromise_resolve = resolve;19    });20    let transformStream = this;21    let controller;22    let controlledReadableStream;23    let controlledWritableStream;24    this._transformStreamController = undefined;25    this._transformStreamController = {26      enqueue(chunk) {27        TransformStreamDefaultControllerEnqueue(transformStream._transformStreamController, chunk);28      },29      error(reason) {30        TransformStreamDefaultControllerError(transformStream._transformStreamController, reason);31      },32      terminate() {33        TransformStreamDefaultControllerTerminate(transformStream._transformStreamController);34      }35    };36    function startAlgorithm() {37      return startPromise;38    }39    function writeAlgorithm(chunk) {40      return Promise.resolve(transformer.transform(chunk, transformStream._transformStreamController));41    }42    function abortAlgorithm(reason) {43      if (transformStream._transformStreamController !== undefined) {44        TransformStreamDefaultControllerClearAlgorithms(transformStream._transformStreamController);45      }46      return Promise.resolve();47    }48    function closeAlgorithm() {49      return Promise.resolve(transformer.flush(transformStream._transformStreamController));50    }51    controlledWritableStream = new WritableStream(startAlgorithm, writeAlgorithm, closeAlgorithm,

Using AI Code Generation

1import { TransformStreamReadableReadyPromise } from 'wpt/streams';2const { readable, writable } = new TransformStream();3const reader = readable.getReader();4const promise = TransformStreamReadableReadyPromise(readable);5promise.then(() => console.log('ready!'));6import { TransformStream } from 'streams';7export function TransformStreamReadableReadyPromise(stream) {8  return stream.readable.getReader().closed;9}

Using AI Code Generation

1const { TransformStreamReadableReadyPromise } = require('stream/web');2const { ReadableStream } = require('stream/web');3const rs = new ReadableStream({start(c) {4  c.enqueue('a');5  c.close();6}});7const { readable } = new TransformStream({8  transform(chunk, controller) {9    controller.enqueue(chunk);10  }11});12const reader = readable.getReader();13const read = TransformStreamReadableReadyPromise(readable);14read.then(() => {15  console.log('readable state: ', readable.locked);16  console.log('reader state: ', reader.closed);17});18reader state:  Promise { <pending> }19reader state:  Promise { <resolved> }

Using AI Code Generation

1import TransformStream from 'streams/transform-stream';2const {readable, writable} = new TransformStream();3const reader = readable.getReader();4const writer = writable.getWriter();5const promise = reader.ready;6promise.then(() => console.log('readable is ready'));7writer.ready.then(() => console.log('writable is ready'));8import TransformStreamReadableReadyPromise from 'streams/readable-stream/transform-stream-readable-ready-promise';9import TransformStreamWritableReadyPromise from 'streams/writable-stream/transform-stream-writable-ready-promise';10import TransformStreamDefaultControllerEnqueue from 'streams/transform-stream/transform-stream-default-controller-enqueue';11import TransformStreamDefaultControllerError from 'streams/transform-stream/transform-stream-default-controller-error';12import TransformStreamDefaultControllerTerminate from 'streams/transform-stream/transform-stream-default-controller-terminate';13import TransformStreamDefaultControllerPerformTransform from 'streams/transform-stream/transform-stream-default-controller-perform-transform';14import TransformStreamDefaultControllerPerformFlush from 'streams/transform-stream/transform-stream-default-controller-perform-flush';15import TransformStreamDefaultSinkWriteAlgorithm from 'streams/transform-stream/transform-stream-default-sink-write-algorithm';16import TransformStreamDefaultSinkAbortAlgorithm from 'streams/transform-stream/transform-stream-default-sink-abort-algorithm';17import TransformStreamDefaultSinkCloseAlgorithm from 'streams/transform-stream/transform-stream-default-sink-close-algorithm';18import TransformStreamDefaultSourcePullAlgorithm from 'streams/transform-stream/transform-stream-default-source-pull-algorithm';19import TransformStreamDefaultSourceCancelAlgorithm from 'streams/transform-stream/transform-stream-default-source-cancel-algorithm';20import TransformStreamErrorWritableAndUnblockWrite from 'streams/transform-stream/transform-stream-error-writable-and-unblock-write';21import TransformStreamErrorWritableAndUnblockWriteAndFinishFlush from 'streams/transform-stream/transform-stream-error-writable-and-unblock-write-and-finish-flush';22import TransformStreamErrorWritableAndFinishFlush from 'streams/transform-stream/transform-stream-error-writable-and-finish-flush';23import TransformStreamErrorWritableAndFinishTransform from 'streams/transform-stream/transform-stream-error-writable-and-finish-transform';24import TransformStreamErrorWritable from 'streams/transform-stream/transform-stream-error-writable';25import TransformStreamError from 'streams/transform-stream/transform-stream-error';26import TransformStreamSetBackpressure from 'streams/transform-stream/transform-stream-set-backpressure

Using AI Code Generation

1var TransformStreamReadableReadyPromise = require('web-platform-test-transform-stream/transform-stream-readable-ready-promise');2var TransformStream = require('web-platform-test-transform-stream/transform-stream');3var assert = require('assert');4var ts = new TransformStream();5var readable = ts.readable;6var reader = readable.getReader();7var promise = TransformStreamReadableReadyPromise(ts);8assert(promise instanceof Promise);9assert(promise === reader.closed);10assert(promise === TransformStreamReadableReadyPromise(ts));11var TransformStreamWritableReadyPromise = require('web-platform-test-transform-stream/transform-stream-writable-ready-promise');12var TransformStream = require('web-platform-test-transform-stream/transform-stream');13var assert = require('assert');14var ts = new TransformStream();15var writable = ts.writable;16var promise = TransformStreamWritableReadyPromise(ts);17assert(promise instanceof Promise);18assert(promise === writable.ready);19assert(promise === TransformStreamWritableReadyPromise(ts));20var TransformStreamWriteIntoReadRequestQueue = require('web-platform-test-transform-stream/transform-stream-write-into-read-request-queue');21var TransformStream = require('web-platform-test-transform-stream/transform-stream');22var assert = require('assert');23var ts = new TransformStream();24var readable = ts.readable;25var reader = readable.getReader();26var request = reader.read();27TransformStreamWriteIntoReadRequestQueue(ts, request);28assert(ts._readable._reader._readRequests[0] === request);29assert(TransformStreamWriteIntoReadRequestQueue(ts, request) === undefined);30var TransformStreamDefaultControllerClearAlgorithms = require('web-platform-test-transform-stream/transform-stream-default-controller-clear-algorithms');31var TransformStream = require('web-platform-test-transform-stream/transform-stream');32var assert = require('assert');33var ts = new TransformStream();34var controller = ts._transformer._controller;35TransformStreamDefaultControllerClearAlgorithms(controller);36assert(controller._transformAlgorithm === undefined);37assert(controller._flushAlgorithm === undefined);38assert(TransformStreamDefaultControllerClearAlgorithms(controller) === undefined);

Using AI Code Generation

1var reader = new TransformStream().readable.getReader();2reader.readableReadyPromise.then(function () {3  console.log("Readable stream is ready to be read");4});5var ts = new TransformStream({6  start: function (c) {7    c.enqueue("a");8    c.enqueue("b");9    c.enqueue("c");10  }11});12var reader = ts.readable.getReader();13reader.read().then(function (result) {14  console.log(result.value);15  return reader.read();16}).then(function (result) {17  console.log(result.value);18  return reader.read();19}).then(function (result) {20  console.log(result.value);21  return reader.read();22}).then(function (result) {23  console.log(result.done);24});25var ts = new TransformStream({26  start: function (c) {27    c.error(new Error("boo!"));28  }29});30var reader = ts.readable.getReader();31reader.read().catch(function (e) {32  console.log(e.message);33});34var ts = new TransformStream({35  start: function (c) {36    c.terminate();37  }38});39var reader = ts.readable.getReader();40reader.read().then(function (result) {41  console.log(result.done);42});43var ts = new TransformStream({44  start: function (c) {45    console.log(c instanceof TransformStreamDefaultController);46  }47});48var ts = new TransformStream({49  start: function (c) {50    console.log(c instanceof TransformStreamDefaultController);51  }52});53var ts = new TransformStream({54  start: function (c) {55    console.log(c instanceof TransformStreamDefaultController);56  }57});58var ts = new TransformStream({59  start: function (c) {60    console.log(c instanceof TransformStreamDefaultController);61  }62});

Using AI Code Generation

1var rs = new TransformStream();2var reader = rs.readable.getReader();3var promise = reader.readableReady;4promise.then(function(){5});6var rs = new TransformStream();7var writer = rs.writable.getWriter();8var promise = writer.writableReady;9promise.then(function(){10});11var rs = new TransformStream();12var writer = rs.writable.getWriter();13writer.write("chunk");14writer.close();15var rs = new TransformStream();16var writer = rs.writable.getWriter();17writer.write("chunk");18writer.close();19var reader = rs.readable.getReader();20reader.read().then(function(result){21});22var rs = new TransformStream();23var writer = rs.writable.getWriter();24writer.write("chunk");25writer.close();26var reader = rs.readable.getReader();27reader.read().then(function(result){28});29var rs = new TransformStream();30var writer = rs.writable.getWriter();31var controller = writer.controller;32var size = controller.desiredSize;33console.log(size);34var rs = new TransformStream();35var writer = rs.writable.getWriter();36var controller = writer.controller;37var shouldCallPull = controller.shouldCallPull;38console.log(shouldCallPull);39var rs = new TransformStream();40var writer = rs.writable.getWriter();41var controller = writer.controller;42controller.clearAlgorithms();43var rs = new TransformStream();44var writer = rs.writable.getWriter();

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