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How to use WritableStreamDefaultWriterClose method in wpt

Best JavaScript code snippet using wpt

writable_stream_writer.ts

Source:writable_stream_writer.ts

...104    }105    if (WritableStreamCloseQueuedOrInFlight(stream)) {106      throw new TypeError();107    }108    return WritableStreamDefaultWriterClose(this);109  }110  releaseLock() {111    if (!IsWritableStreamDefaultWriter(this)) {112      throw new TypeError();113    }114    const stream = this.ownerWritableStream;115    if (stream === void 0) {116      throw new TypeError();117    }118    Assert(stream.writer !== void 0);119    WritableStreamDefaultWriterRelease(this);120  }121  write(chunk) {122    if (!IsWritableStreamDefaultWriter(this)) {123      throw new TypeError();124    }125    const stream = this.ownerWritableStream;126    if (stream === void 0) {127      throw new TypeError();128    }129    return WritableStreamDefaultWriterWrite(this, chunk);130  }131  closedPromise: Defer<any>;132  ownerWritableStream: WritableStream;133  readyPromise: Defer<any>;134}135export function IsWritableStreamDefaultWriter<T>(136  x137): x is WritableStreamDefaultWriter<T> {138  return typeof x === "object" && x.hasOwnProperty("ownerWritableStream");139}140export function WritableStreamDefaultWriterAbort<T>(141  writer: WritableStreamDefaultWriter<T>,142  reason143) {144  Assert(writer.ownerWritableStream !== void 0);145  return WritableStreamAbort(writer.ownerWritableStream, reason);146}147export async function WritableStreamDefaultWriterClose<T>(148  writer: WritableStreamDefaultWriter<T>149): Promise<any> {150  const stream = writer.ownerWritableStream;151  Assert(stream !== void 0);152  const { state } = stream;153  if (state === "closed" || state === "errored") {154    throw new TypeError(`stream is ${state}`);155  }156  Assert(state === "writable" || state === "erroring");157  Assert(!WritableStreamCloseQueuedOrInFlight(stream));158  const promise = defer();159  stream.closeRequest = promise;160  if (stream.backpressure && state == "writable") {161    writer.readyPromise.resolve();162  }163  WritableStreamDefaultControllerClose(stream.writableStreamController);164  return promise;165}166export async function WritableStreamDefaultWriterCloseWithErrorPropagation<T>(167  writer: WritableStreamDefaultWriter<T>168) {169  const stream = writer.ownerWritableStream;170  Assert(stream !== void 0);171  const { state } = stream;172  if (WritableStreamCloseQueuedOrInFlight(stream) || state === "closed") {173    return void 0;174  }175  if (state === "errored") {176    throw stream.storedError;177  }178  Assert(state === "writable" || state === "erroring");179  return WritableStreamDefaultWriterClose(writer);180}181export function WritableStreamDefaultWriterEnsureClosedPromiseRejected<T>(182  writer: WritableStreamDefaultWriter<T>,183  error184) {185  if (writer.closedPromise[PromiseState] === "pending") {186    writer.closedPromise.reject(error);187  } else {188    writer.closedPromise = rejectDefer(error);189  }190}191export function WritableStreamDefaultWriterEnsureReadyPromiseRejected<T>(192  writer: WritableStreamDefaultWriter<T>,193  error...

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

1'use strict';2promise_test(() => {3  const ws = new WritableStream({4    write() {5      return new Promise(resolve => setTimeout(resolve, 100));6    }7  });8  const writer = ws.getWriter();9  writer.write('a');10  return delay(0).then(() => writer.close()).then(() => {11    assert_true(writer.closed, 'writer.closed should be true');12    assert_equals(writer.desiredSize, 0, 'writer.desiredSize should be 0');13    return writer.write('b');14  }).then(() => {15    assert_unreached('write() should reject');16  }, r => {17    assert_equals(r.name, 'TypeError', 'write() should reject with a TypeError');18    assert_equals(r.message, 'writer is not active', 'write() should reject with a TypeError with the message "writer is not active"');19  });20}, 'WritableStreamDefaultWriterClose should reject if writer is not active');21promise_test(() => {22  const ws = new WritableStream();23  const writer = ws.getWriter();24  writer.releaseLock();25  return promise_rejects(t, new TypeError(), writer.close(), 'close() should reject with a TypeError');26}, 'WritableStreamDefaultWriterClose should reject if writer is not active');27promise_test(() => {28  const ws = new WritableStream({29    write() {30      return new Promise(resolve => setTimeout(resolve, 100));31    }32  });33  const writer = ws.getWriter();34  writer.write('a');35  return delay(0).then(() => writer.close()).then(() => {36    assert_true(writer.closed, 'writer.closed should be true');37    assert_equals(writer.desiredSize, 0, 'writer.desiredSize should be 0');38    return writer.write('b');39  }).then(() => {40    assert_unreached('write() should reject');41  }, r => {42    assert_equals(r.name, 'TypeError', 'write() should reject with a TypeError');43    assert_equals(r.message, 'writer is not active', 'write() should reject with a TypeError with the message "writer is not active"');44  });45}, 'WritableStreamDefaultWriterClose should reject if writer is not active');46promise_test(() => {47  const ws = new WritableStream();48  const writer = ws.getWriter();49  writer.releaseLock();50  return promise_rejects(t, new TypeError(), writer.close(), 'close() should reject with a TypeError');

Using AI Code Generation

1var ws = new WritableStream({2  write(chunk) {3    return new Promise((resolve, reject) => {4      setTimeout(() => {5        resolve();6      }, 1000);7    });8  }9});10var writer = ws.getWriter();11writer.write('a');12writer.write('b');13writer.write('c');14writer.close();15writer.closed.then(() => {16  console.log('closed successfully');17});18promise_test(() => {19  const ws = new WritableStream();20  const writer = ws.getWriter();21  const closedPromise = writer.closed;22  writer.close();23  return closedPromise;24}, 'closed should be fulfilled with undefined');25promise_test(() => {26  const ws = new WritableStream();27  const writer = ws.getWriter();28  const closedPromise = writer.closed;29  writer.close();30  writer.close();31  writer.close();32  return closedPromise;33}, 'closed should be fulfilled with undefined even if close is called multiple times');34promise_test(() => {35  const ws = new WritableStream();36  const writer = ws.getWriter();37  writer.close();38  return promise_rejects(t, new TypeError(), writer.close(), 'close should reject with a TypeError');39}, 'close should reject if the stream is already closed');40promise_test(() => {41  const ws = new WritableStream();42  const writer = ws.getWriter();43  writer.close();44  return promise_rejects(t, new TypeError(), writer.releaseLock(), 'releaseLock should reject with a TypeError');45}, 'releaseLock should reject if the stream is already closed');46promise_test(() => {47  const ws = new WritableStream();48  const writer = ws.getWriter();49  writer.close();50  return promise_rejects(t, new TypeError(), writer.write(), 'write should reject with a TypeError');51}, 'write should reject if the stream is already closed');52promise_test(() => {53  const ws = new WritableStream();54  const writer = ws.getWriter();55  writer.close();56  return promise_rejects(t, new TypeError(), writer.abort(), 'abort should reject with a TypeError');57}, 'abort should reject if the stream is already closed');58promise_test(() => {59  const ws = new WritableStream({60    write() {61      return new Promise(resolve => {62        setTimeout(resolve, 100);63      });

Using AI Code Generation

1var ws = new WritableStream({2  write(chunk) {3    return new Promise(resolve => setTimeout(resolve, 100));4  }5});6var writer = ws.getWriter();7writer.write('a');8writer.write('b');9writer.write('c');10writer.close().then(() => {11  console.log('closed');12}).catch((err) => {13  console.log('close failed: ' + err);14});15var ws = new WritableStream({16  write(chunk) {17    return new Promise(resolve => setTimeout(resolve, 100));18  }19});20var writer = ws.getWriter();21writer.write('a');22writer.write('b');23writer.write('c');24writer.close().then(() => {25  console.log('closed');26}).catch((err) => {27  console.log('close failed: ' + err);28});

Using AI Code Generation

1const ws = new WritableStream({2  write() { }3});4const writer = ws.getWriter();5writer.close();6const ws = new WritableStream({7  write() { }8});9const writer = ws.getWriter();10writer.close(new Error('bad things'));11const ws = new WritableStream({12  write() { }13});14const writer = ws.getWriter();15writer.releaseLock();16writer.close();17const ws = new WritableStream({18  write() { }19});20const writer = ws.getWriter();21writer.releaseLock();22writer.close(new Error('bad things'));23const ws = new WritableStream({24  write() { }25});26const writer = ws.getWriter();27writer.releaseLock();28writer.close(new Error('bad things'));29const ws = new WritableStream({30  write() { }31});32const writer = ws.getWriter();33writer.releaseLock();34writer.close(new Error('bad things'));35const ws = new WritableStream({36  write() { }37});38const writer = ws.getWriter();39writer.releaseLock();40writer.close(new Error('bad things'));41const ws = new WritableStream({42  write() { }43});44const writer = ws.getWriter();45writer.releaseLock();46writer.close(new Error('bad things'));47const ws = new WritableStream({48  write() { }49});50const writer = ws.getWriter();51writer.releaseLock();52writer.close(new Error('bad things'));53const ws = new WritableStream({54  write() { }55});56const writer = ws.getWriter();57writer.releaseLock();58writer.close(new Error('bad things'));

Using AI Code Generation

1const ws = new WritableStream();2const writer = ws.getWriter();3writer.close().then(() => console.log("closed successfully!"));4writer.close().then(() => console.log("closed successfully!"))5  .catch(() => console.log("the stream has already been closed or failed"));6WritableStreamDefaultWriterClose (writer)7{8  const stream = writer._ownerWritableStream;9  assert(stream !== undefined);10  if (stream._state === 'closed') {11    return Promise.resolve(undefined);12  }13  if (stream._state === 'errored') {14    return Promise.reject(stream._storedError);15  }16  assert(stream._state === 'writable' || stream._state === 'closing');17  const promise = new Promise((resolve, reject) => {18    const closeRequest = {19    };20    stream._writerCloseRequest = closeRequest;21  });22  if (stream._pendingAbortRequest === undefined && stream._backpressure && stream._state === 'writable') {23    WritableStreamDefaultControllerClearAlgorithms(stream._writableStreamController);24  }25  stream._state = 'closing';26  WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, new TypeError('the stream has already been closed or failed'));27  return promise;28}29WritableStreamDefaultWriterEnsureReadyPromiseRejected (writer, error)30{31  if (writer._readyPromiseState === 'pending') {32    writer._readyPromiseState = 'rejected';33    writer._readyPromise_reject(error);34  } else {35    assert(writer._readyPromiseState === 'rejected');36  }37  writer._readyPromise = newPromise();38  writer._readyPromiseState = 'pending';39  writer._readyPromise_resolve = undefined;40  writer._readyPromise_reject = undefined;41}42WritableStreamDefaultWriterEnsureReadyPromiseRejected (writer, error)43{44  if (writer._readyPromiseState === 'pending') {45    writer._readyPromiseState = 'rejected';46    writer._readyPromise_reject(error);47  } else {48    assert(writer._readyPromiseState === 'rejected');49  }50  writer._readyPromise = newPromise();

Using AI Code Generation

1const writer = writable.getWriter();2writer.close();3writer.closed.then(() => console.log('closed'));4const writer = writable.getWriter();5writer.releaseLock();6writer.closed.then(() => console.log('closed'));7const writer = writable.getWriter();8writer.write('a');9writer.closed.then(() => console.log('closed'));10const writer = writable.getWriter();11writer.abort('a');12writer.closed.then(() => console.log('closed'));13const writer = writable.getWriter();14const {15} = writer.getWriter();16console.log(desiredSize);17const writer = writable.getWriter();18writer.abort('a');19writer.closed.then(() => console.log('closed'));20const writer = writable.getWriter();21writer.abort('a');22writer.closed.then(() => console.log('closed'));23const writer = writable.getWriter();24writer.abort('a');25writer.closed.then(() => console.log('closed'));26const writer = writable.getWriter();27writer.abort('a');28writer.closed.then(() => console.log('closed'));29const writer = writable.getWriter();30writer.abort('a');31writer.closed.then(() => console.log('closed'));32const writer = writable.getWriter();33writer.abort('a');34writer.closed.then(() => console.log('closed'));35const writer = writable.getWriter();36writer.abort('a');37writer.closed.then(() => console.log('closed'));38const writer = writable.getWriter();39writer.abort('a');40writer.closed.then(() => console.log('closed'));41const writer = writable.getWriter();42writer.abort('a');43writer.closed.then(() => console.log('closed'));

Using AI Code Generation

1const writer = writable.getWriter();2writer.close();3writer.closed.then(() => console.log("closed!"));4const writer = writable.getWriter();5writer.close().catch(r => console.log("closed with ", r));6const writer = writable.getWriter();7writer.close();8writer.releaseLock();9writer.closed.then(() => console.log("closed!"));10const writer = writable.getWriter();11writer.close().catch(r => console.log("closed with ", r));12writer.releaseLock();13const writer = writable.getWriter();14writer.close().catch(r => console.log("closed with ", r));15writer.releaseLock();16const writer = writable.getWriter();17writer.close().catch(r => console.log("closed with ", r));18writer.releaseLock();19const writer = writable.getWriter();20writer.close().catch(r => console.log("closed with ", r));21writer.releaseLock();22WritableStreamDefaultWriterCloseWithErrorPropagationAndForceClosed ( this, reason )

Using AI Code Generation

1const writer = writable.getWriter();2writer.close();3writer.closed.then(() => console.log('closed!'));4writer.write("chunk");5writer.closed.then(() => console.log('closed!'));6writer.releaseLock();7const desiredSize = writer.desiredSize;8writer.ready.then(() => console.log("write() will now succeed"));9const writer = writable.getWriter();10writer.close();11writer.closed.then(() => console.log('closed!'));12writer.write("chunk");13writer.closed.then(() => console.log('closed!'));14writer.releaseLock();15const desiredSize = writer.desiredSize;16writer.ready.then(() => console.log("write() will now succeed"));17const writer = writable.getWriter();18writer.close();19writer.closed.then(() => console.log('closed!'));20writer.write("chunk");21writer.closed.then(() => console.log('closed!'));22writer.releaseLock();23const desiredSize = writer.desiredSize;24writer.ready.then(() => console.log("write() will now succeed"));25const writer = writable.getWriter();26writer.close();27writer.closed.then(() => console.log('closed!'));28writer.write("chunk");29writer.closed.then(() => console.log('closed!'));

Using AI Code Generation

1const writer = writable.getWriter();2const writerClose = writer.close();3writerClose.then(() => {4  console.log('closed');5});6const writer = writable.getWriter();7const writerClose = writer.close();8writerClose.then(() => {9  console.log('closed');10});11const writer = writable.getWriter();12const writerClose = writer.close();13writerClose.then(() => {14  test(() => {15    assert_true(true, "closed");16  }, "Test WritableStreamDefaultWriterClose");17});

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