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How to use WritableStreamDefaultWriterWrite method in wpt

Best JavaScript code snippet using wpt

pipe.ts

Source:pipe.ts

...101          ReadableStreamDefaultReaderRead(102            reader,103            {104              _chunkSteps: chunk => {105                currentWrite = PerformPromiseThen(WritableStreamDefaultWriterWrite(writer, chunk), undefined, noop);106                resolveRead(false);107              },108              _closeSteps: () => resolveRead(true),109              _errorSteps: rejectRead110            }111          );112        });113      });114    }115    // Errors must be propagated forward116    isOrBecomesErrored(source, reader._closedPromise, storedError => {117      if (!preventAbort) {118        shutdownWithAction(() => WritableStreamAbort(dest, storedError), true, storedError);119      } else {...

writable_stream_default_writer.ts

Source:writable_stream_default_writer.ts

1// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.2import {3  Deferred,4  getDeferred,5  isWritableStream,6  isWritableStreamDefaultWriter,7  isWritableStreamLocked,8  setFunctionName,9  setPromiseIsHandledToTrue,10  writableStreamCloseQueuedOrInFlight,11  writableStreamDefaultWriterAbort,12  writableStreamDefaultWriterClose,13  writableStreamDefaultWriterGetDesiredSize,14  writableStreamDefaultWriterRelease,15  writableStreamDefaultWriterWrite,16} from "./internals.ts";17import * as sym from "./symbols.ts";18import { WritableStreamImpl } from "./writable_stream.ts";19import { customInspect } from "../console.ts";20import { assert } from "../../util.ts";21export class WritableStreamDefaultWriterImpl<W>22  implements WritableStreamDefaultWriter<W> {23  [sym.closedPromise]: Deferred<void>;24  [sym.ownerWritableStream]: WritableStreamImpl<W>;25  [sym.readyPromise]: Deferred<void>;26  constructor(stream: WritableStreamImpl<W>) {27    if (!isWritableStream(stream)) {28      throw new TypeError("Invalid stream.");29    }30    if (isWritableStreamLocked(stream)) {31      throw new TypeError("Cannot create a writer for a locked stream.");32    }33    this[sym.ownerWritableStream] = stream;34    stream[sym.writer] = this;35    const state = stream[sym.state];36    if (state === "writable") {37      if (38        !writableStreamCloseQueuedOrInFlight(stream) &&39        stream[sym.backpressure]40      ) {41        this[sym.readyPromise] = getDeferred();42      } else {43        this[sym.readyPromise] = { promise: Promise.resolve() };44      }45      this[sym.closedPromise] = getDeferred();46    } else if (state === "erroring") {47      this[sym.readyPromise] = {48        promise: Promise.reject(stream[sym.storedError]),49      };50      setPromiseIsHandledToTrue(this[sym.readyPromise].promise);51      this[sym.closedPromise] = getDeferred();52    } else if (state === "closed") {53      this[sym.readyPromise] = { promise: Promise.resolve() };54      this[sym.closedPromise] = { promise: Promise.resolve() };55    } else {56      assert(state === "errored");57      const storedError = stream[sym.storedError];58      this[sym.readyPromise] = { promise: Promise.reject(storedError) };59      setPromiseIsHandledToTrue(this[sym.readyPromise].promise);60      this[sym.closedPromise] = { promise: Promise.reject(storedError) };61      setPromiseIsHandledToTrue(this[sym.closedPromise].promise);62    }63  }64  get closed(): Promise<void> {65    if (!isWritableStreamDefaultWriter(this)) {66      return Promise.reject(67        new TypeError("Invalid WritableStreamDefaultWriter.")68      );69    }70    return this[sym.closedPromise].promise;71  }72  get desiredSize(): number | null {73    if (!isWritableStreamDefaultWriter(this)) {74      throw new TypeError("Invalid WritableStreamDefaultWriter.");75    }76    if (!this[sym.ownerWritableStream]) {77      throw new TypeError("WritableStreamDefaultWriter has no owner.");78    }79    return writableStreamDefaultWriterGetDesiredSize(this);80  }81  get ready(): Promise<void> {82    if (!isWritableStreamDefaultWriter(this)) {83      return Promise.reject(84        new TypeError("Invalid WritableStreamDefaultWriter.")85      );86    }87    return this[sym.readyPromise].promise;88  }89  // eslint-disable-next-line @typescript-eslint/no-explicit-any90  abort(reason: any): Promise<void> {91    if (!isWritableStreamDefaultWriter(this)) {92      return Promise.reject(93        new TypeError("Invalid WritableStreamDefaultWriter.")94      );95    }96    if (!this[sym.ownerWritableStream]) {97      Promise.reject(98        new TypeError("WritableStreamDefaultWriter has no owner.")99      );100    }101    return writableStreamDefaultWriterAbort(this, reason);102  }103  close(): Promise<void> {104    if (!isWritableStreamDefaultWriter(this)) {105      return Promise.reject(106        new TypeError("Invalid WritableStreamDefaultWriter.")107      );108    }109    const stream = this[sym.ownerWritableStream];110    if (!stream) {111      Promise.reject(112        new TypeError("WritableStreamDefaultWriter has no owner.")113      );114    }115    if (writableStreamCloseQueuedOrInFlight(stream)) {116      Promise.reject(117        new TypeError("Stream is in an invalid state to be closed.")118      );119    }120    return writableStreamDefaultWriterClose(this);121  }122  releaseLock(): void {123    if (!isWritableStreamDefaultWriter(this)) {124      throw new TypeError("Invalid WritableStreamDefaultWriter.");125    }126    const stream = this[sym.ownerWritableStream];127    if (!stream) {128      return;129    }130    assert(stream[sym.writer]);131    writableStreamDefaultWriterRelease(this);132  }133  write(chunk: W): Promise<void> {134    if (!isWritableStreamDefaultWriter(this)) {135      return Promise.reject(136        new TypeError("Invalid WritableStreamDefaultWriter.")137      );138    }139    if (!this[sym.ownerWritableStream]) {140      Promise.reject(141        new TypeError("WritableStreamDefaultWriter has no owner.")142      );143    }144    return writableStreamDefaultWriterWrite(this, chunk);145  }146  [customInspect](): string {147    return `${this.constructor.name} { closed: Promise, desiredSize: ${String(148      this.desiredSize149    )}, ready: Promise }`;150  }151}...

Using AI Code Generation

1const writer = writable.getWriter();2const chunk = new Uint8Array([104, 101, 108, 108, 111]);3writer.write(chunk);4const writer = writable.getWriter();5writer.close();6const writer = writable.getWriter();7writer.releaseLock();8const writer = writable.getWriter();9const desiredSize = writer.desiredSize;10const writer = writable.getWriter();11const ready = writer.ready;12const writer = writable.getWriter();13writer.abort();14const writer = writable.getWriter();15writer.abort(new Error('something is wrong'));16const writer = writable.getWriter();17const desiredSize = writer.desiredSize;18const writer = writable.getWriter();19writer.close();20const writer = writable.getWriter();21const chunkSize = writer.desiredSize;22const writer = writable.getWriter();23writer.abort();24const writer = writable.getWriter();25writer.abort(new Error('something is wrong'));26const writer = writable.getWriter();27writer.abort();28const writer = writable.getWriter();29writer.abort(new Error('something is wrong'));30const writer = writable.getWriter();31writer.abort();32const writer = writable.getWriter();33writer.abort(new Error('something is wrong'));34const writer = writable.getWriter();35writer.abort();36const writer = writable.getWriter();37writer.abort(new Error('

Using AI Code Generation

1var rs = new ReadableStream({2  start(controller) {3    var writer = stream.getWriter();4    writer.write('a');5    writer.write('b');6    writer.write('c');7  }8});9var reader = rs.getReader();10var stream = new WritableStream({11  write(chunk) {12    console.log(chunk);13  },14  close() {15    console.log('closed');16  }17});18var writer = stream.getWriter();19writer.write('a').then(() => {20  return writer.write('b');21}).then(() => {22  return writer.write('c');23}).then(() => {24  return writer.close();25});26var rs = new ReadableStream({27  start(controller) {28    var writer = stream.getWriter();29    writer.write('a');30    writer.write('b');31    writer.write('c');32    writer.close();33  }34});35var reader = rs.getReader();36var stream = new WritableStream({37  write(chunk) {38    console.log(chunk);39  },40  close() {41    console.log('closed');42  }43});44var writer = stream.getWriter();45writer.write('a').then(() => {46  return writer.write('b');47}).then(() => {48  return writer.write('c');49}).then(() => {50  return writer.close();51});52var rs = new ReadableStream({53  start(controller) {54    var writer = stream.getWriter();55    writer.write('a');56    writer.write('b');57    writer.write('c');58    writer.releaseLock();59  }60});61var reader = rs.getReader();62var stream = new WritableStream({63  write(chunk) {64    console.log(chunk);65  },66  close() {67    console.log('closed');68  }69});

Using AI Code Generation

1var writer = new WritableStreamDefaultWriter(stream);2var writePromise = writer.write('a');3writePromise.then(function() {4  console.log('write complete');5}, function(e) {6  console.log('write failed: ' + e);7});8var writer = new WritableStreamDefaultWriter(stream);9var closePromise = writer.close();10closePromise.then(function() {11  console.log('close complete');12}, function(e) {13  console.log('close failed: ' + e);14});15var writer = new WritableStreamDefaultWriter(stream);16writer.releaseLock();17var writer = new WritableStreamDefaultWriter(stream);18var desiredSize = writer.desiredSize;19var ws = new WritableStream({20  start: function(c) {21    c.error('sorry!');22  }23});24ws.catch(function(e) {25  console.log('caught: ' + e);26});27var ws = new WritableStream({28  write: function(chunk, c) {29    console.log('desired size: ' + c.desiredSize);30    if (chunk === 'done') {31      c.close();32    }33  }34});35var writer = new WritableStreamDefaultWriter(ws);36writer.write(1);37writer.write(2);38writer.write(3);39writer.write('done');40var ws = new WritableStream({41  write: function(chunk, c) {42    if (chunk === 'done') {43      c.close();44    }45  }46});47var writer = new WritableStreamDefaultWriter(ws);48writer.write(1);49writer.write(2);50writer.write(3);51writer.write('done');52var ws = new WritableStream({53  write: function(chunk, c) {

Using AI Code Generation

1var ws = new WritableStream({2    write(chunk, controller) {3      return new Promise((resolve, reject) => {4        setTimeout(() => {5          resolve();6        }, 1000);7      });8    }9  });10  var writer = ws.getWriter();11  writer.write('a');12  writer.write('b');13  writer.write('c');14  var ws = new WritableStream({15    write(chunk, controller) {16      return new Promise((resolve, reject) => {17        setTimeout(() => {18          resolve();19        }, 1000);20      });21    }22  });23  var writer = ws.getWriter();24  writer.write('a');25  writer.write('b');26  writer.write('c');27  writer.close();28  var ws = new WritableStream({29    write(chunk, controller) {30      return new Promise((resolve, reject) => {31        setTimeout(() => {32          resolve();33        }, 1000);34      });35    }36  });37  var writer = ws.getWriter();38  writer.write('a');39  writer.write('b');40  writer.write('c');41  writer.releaseLock();42  var ws = new WritableStream({43    write(chunk, controller) {44      return new Promise((resolve, reject) => {45        setTimeout(() => {46          resolve();47        }, 1000);48      });49    }50  });51  var writer = ws.getWriter();52  var desiredSize = writer.desiredSize;53  writer.write('a');54  desiredSize = writer.desiredSize;55  var ws = new WritableStream({56    write(chunk, controller) {57      return new Promise((resolve, reject) => {58        setTimeout(() => {59          resolve();60        }, 1000);61      });62    }63  });64  var writer = ws.getWriter();65  var desiredSize = writer.desiredSize;66  writer.write('a');67  desiredSize = writer.desiredSize;68  console.log(desiredSize);

Using AI Code Generation

1var writer = new WritableStreamDefaultWriter(stream);2var chunk = new Uint8Array([0x01, 0x02, 0x03]);3writer.write(chunk);4writer.releaseLock();5var writer = new WritableStreamDefaultWriter(stream);6writer.close();7writer.releaseLock();8var writer = new WritableStreamDefaultWriter(stream);9writer.releaseLock();10var writer = new WritableStreamDefaultWriter(stream);11var desiredSize = writer.desiredSize;12writer.releaseLock();13var writer = new WritableStreamDefaultWriter(stream);14var ready = writer.ready;15writer.releaseLock();16var writer = new WritableStreamDefaultWriter(stream);17var closed = writer.closed;18writer.releaseLock();19var writer = new WritableStreamDefaultWriter(stream);20writer.abort();21writer.releaseLock();22var writer = new WritableStreamDefaultWriter(stream);23var desiredSize = writer.desiredSize;24writer.releaseLock();25var writer = new WritableStreamDefaultWriter(stream);26var closeRequested = writer.closeRequested;27writer.releaseLock();28var writer = new WritableStreamDefaultWriter(stream);29var error = writer.error;30writer.releaseLock();31var writer = new WritableStreamDefaultWriter(stream);32writer.error();33writer.releaseLock();34var writer = new WritableStreamDefaultWriter(stream);35writer.close();36writer.releaseLock();37var writer = new WritableStreamDefaultWriter(stream);38writer.write();39writer.releaseLock();

Using AI Code Generation

1const assert = require('assert');2const { WritableStream } = require('stream/web');3const { WritableStreamDefaultWriterWrite } = require('stream/web');4const writer = new WritableStreamDefaultWriter(new WritableStream());5const writePromise = WritableStreamDefaultWriterWrite(writer, 'a');6writePromise.then(() => {7  console.log('the chunk was written');8}, () => {9  console.log('the chunk was not written');10  assert.fail();11});12assert.strictEqual(writePromise instanceof Promise, true);13function WritableStreamDefaultWriterWrite(writer, chunk) {14  const {15  } = writer;16  assert(stream !== undefined);17  return WritableStreamDefaultControllerWrite(18    chunk);19}20function WritableStreamDefaultWriterWrite(writer, chunk) {21  const {22  } = writer;23  assert(stream !== undefined);24  return WritableStreamDefaultControllerWrite(25    chunk);26}27function WritableStreamDefaultControllerWrite(controller, chunk) {28  const stream = controller._controlledWritableStream;29  const {30  } = stream;31  if (state === 'writable') {32    const {33    } = controller;34    if (writeRequests.length > 0) {35      return PromiseReject(36        new ERR_INVALID_STATE.TypeError('Stream has pending write() calls'));37    }38    const {39    } = controller;40    if (backpressure) {41      return PromiseReject(42        new ERR_INVALID_STATE.TypeError('Stream backpressure is true'));43    }44    return WritableStreamDefaultControllerWriteOrClose(45      false);46  }47  if (state === 'erroring') {48    return PromiseReject(stream._storedError);49  }50  assert(state === 'closed' || state === 'errored');51  return PromiseReject(52    new ERR_INVALID_STATE.TypeError('Stream is not writable'));53}54function WritableStreamDefaultControllerWriteOrClose(

Using AI Code Generation

1var writer = new WritableStreamDefaultWriter(stream);2var writePromise = writer.write(chunk);3writePromise.then(4  function(result) {5    console.log('write success');6  },7  function(reason) {8    console.log('write failed');9  }10);11var writer = new WritableStreamDefaultWriter(stream);12var closePromise = writer.close();13closePromise.then(14  function(result) {15    console.log('close success');16  },17  function(reason) {18    console.log('close failed');19  }20);21var writer = new WritableStreamDefaultWriter(stream);22var abortPromise = writer.abort(reason);23abortPromise.then(24  function(result) {25    console.log('abort success');26  },27  function(reason) {28    console.log('abort failed');29  }30);31var writer = new WritableStreamDefaultWriter(stream);32var queueSize = writer.desiredSize;33console.log('queue size is ' + queueSize);34var writer = new WritableStreamDefaultWriter(stream);35var readyPromise = writer.ready;36readyPromise.then(37  function(result) {38    console.log('ready success');39  },40  function(reason) {41    console.log('ready failed');42  }43);44var writer = new WritableStreamDefaultWriter(stream);45writer.releaseLock();46var stream = new WritableStream({47  write: function(chunk) {48    return new Promise(function(resolve, reject) {49      console.log('write success');50      resolve();51    });52  }53});54var writer = new WritableStreamDefaultWriter(stream);55var controller = writer.controller;56controller.error(new Error('error'));57writer.write('a').then(58  function(result) {59    console.log('write success');60  },61  function(reason) {62    console.log('write failed');63  }64);

Using AI Code Generation

1onmessage = function(e) {2  const writer = e.data;3  writer.write('hello');4}5  const ws = new WritableStream();6  const writer = ws.getWriter();7  const worker = new Worker('test.js');8  worker.postMessage(writer);

Using AI Code Generation

1const ws = new WritableStream();2const writer = ws.getWriter();3writer.write('a');4writer.write('b');5writer.write('c');6Thanks for your help. I have one more question. I am trying to use the WritableStreamDefaultWriterWrite() method to write to the underlying sink. But I am not able to get the expected result. The code is as follows:7const ws = new WritableStream();8const writer = ws.getWriter();9writer.write('a');10writer.write('b');11writer.write('c');12writer.close();

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