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How to use ReadableByteStreamControllerClose method in wpt

Best JavaScript code snippet using wpt

readable_byte_stream_controller.ts

Source:readable_byte_stream_controller.ts

1// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.2import {3  BufferQueueItem,4  CancelAlgorithm,5  isDetachedBuffer,6  isReadableByteStreamController,7  PullAlgorithm,8  resetQueue,9  readableByteStreamControllerCallPullIfNeeded,10  readableByteStreamControllerClearAlgorithms,11  readableByteStreamControllerClose,12  readableByteStreamControllerEnqueue,13  readableByteStreamControllerError,14  readableByteStreamControllerGetDesiredSize,15  readableByteStreamControllerHandleQueueDrain,16  readableStreamAddReadRequest,17  readableStreamHasDefaultReader,18  readableStreamGetNumReadRequests,19  readableStreamCreateReadResult,20  setFunctionName,21} from "./internals.ts";22import { ReadableStreamImpl } from "./readable_stream.ts";23import * as sym from "./symbols.ts";24import { assert } from "../../util.ts";25import { customInspect } from "../console.ts";26export class ReadableByteStreamControllerImpl27  implements ReadableByteStreamController {28  [sym.autoAllocateChunkSize]: number | undefined;29  [sym.byobRequest]: undefined;30  [sym.cancelAlgorithm]: CancelAlgorithm;31  [sym.closeRequested]: boolean;32  [sym.controlledReadableByteStream]: ReadableStreamImpl<Uint8Array>;33  [sym.pullAgain]: boolean;34  [sym.pullAlgorithm]: PullAlgorithm;35  [sym.pulling]: boolean;36  [sym.queue]: BufferQueueItem[];37  [sym.queueTotalSize]: number;38  [sym.started]: boolean;39  [sym.strategyHWM]: number;40  private constructor() {41    throw new TypeError(42      "ReadableByteStreamController's constructor cannot be called."43    );44  }45  get byobRequest(): undefined {46    return undefined;47  }48  get desiredSize(): number | null {49    if (!isReadableByteStreamController(this)) {50      throw new TypeError("Invalid ReadableByteStreamController.");51    }52    return readableByteStreamControllerGetDesiredSize(this);53  }54  close(): void {55    if (!isReadableByteStreamController(this)) {56      throw new TypeError("Invalid ReadableByteStreamController.");57    }58    if (this[sym.closeRequested]) {59      throw new TypeError("Closed already requested.");60    }61    if (this[sym.controlledReadableByteStream][sym.state] !== "readable") {62      throw new TypeError(63        "ReadableByteStreamController's stream is not in a readable state."64      );65    }66    readableByteStreamControllerClose(this);67  }68  enqueue(chunk: ArrayBufferView): void {69    if (!isReadableByteStreamController(this)) {70      throw new TypeError("Invalid ReadableByteStreamController.");71    }72    if (this[sym.closeRequested]) {73      throw new TypeError("Closed already requested.");74    }75    if (this[sym.controlledReadableByteStream][sym.state] !== "readable") {76      throw new TypeError(77        "ReadableByteStreamController's stream is not in a readable state."78      );79    }80    if (!ArrayBuffer.isView(chunk)) {81      throw new TypeError(82        "You can only enqueue array buffer views when using a ReadableByteStreamController"83      );84    }85    if (isDetachedBuffer(chunk.buffer)) {86      throw new TypeError("Cannot enqueue a view onto a detached ArrayBuffer");87    }88    readableByteStreamControllerEnqueue(this, chunk);89  }90  // eslint-disable-next-line @typescript-eslint/no-explicit-any91  error(error?: any): void {92    if (!isReadableByteStreamController(this)) {93      throw new TypeError("Invalid ReadableByteStreamController.");94    }95    readableByteStreamControllerError(this, error);96  }97  // eslint-disable-next-line @typescript-eslint/no-explicit-any98  [sym.cancelSteps](reason: any): PromiseLike<void> {99    // 3.11.5.1.1 If this.[[pendingPullIntos]] is not empty,100    resetQueue(this);101    const result = this[sym.cancelAlgorithm](reason);102    readableByteStreamControllerClearAlgorithms(this);103    return result;104  }105  [sym.pullSteps](): Promise<ReadableStreamReadResult<Uint8Array>> {106    const stream = this[sym.controlledReadableByteStream];107    assert(readableStreamHasDefaultReader(stream));108    if (this[sym.queueTotalSize] > 0) {109      assert(readableStreamGetNumReadRequests(stream) === 0);110      const entry = this[sym.queue].shift();111      assert(entry);112      this[sym.queueTotalSize] -= entry.size;113      readableByteStreamControllerHandleQueueDrain(this);114      const view = new Uint8Array(entry.value, entry.offset, entry.size);115      return Promise.resolve(116        readableStreamCreateReadResult(117          view,118          false,119          stream[sym.reader]![sym.forAuthorCode]120        )121      );122    }123    // 3.11.5.2.5 If autoAllocateChunkSize is not undefined,124    const promise = readableStreamAddReadRequest(stream);125    readableByteStreamControllerCallPullIfNeeded(this);126    return promise;127  }128  [customInspect](): string {129    return `${this.constructor.name} { byobRequest: ${String(130      this.byobRequest131    )}, desiredSize: ${String(this.desiredSize)} }`;132  }133}134setFunctionName(135  ReadableByteStreamControllerImpl,136  "ReadableByteStreamController"...

ReadableByteStreamController.js

Source:ReadableByteStreamController.js

1/*2 * Copyright (C) 2016 Canon Inc.3 *4 * Redistribution and use in source and binary forms, with or without5 * modification, are permitted provided that the following conditions6 * are met:7 * 1. Redistributions of source code must retain the above copyright8 *    notice, this list of conditions and the following disclaimer.9 * 2. Redistributions in binary form must reproduce the above copyright10 *    notice, this list of conditions and the following disclaimer in the11 *    documentation and/or other materials provided with the distribution.12 *13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.24 */25// @conditional=ENABLE(STREAMS_API)26function enqueue(chunk)27{28    "use strict";29    if (!@isReadableByteStreamController(this))30        throw @makeThisTypeError("ReadableByteStreamController", "enqueue");31    if (this.@closeRequested)32        @throwTypeError("ReadableByteStreamController is requested to close");33    if (this.@controlledReadableStream.@state !== @streamReadable)34        @throwTypeError("ReadableStream is not readable");35    if (!@isObject(chunk))36        @throwTypeError("Provided chunk is not an object");37    if (!@ArrayBuffer.@isView(chunk))38        @throwTypeError("Provided chunk is not an ArrayBuffer view");39    return @readableByteStreamControllerEnqueue(this, chunk);40}41function error(error)42{43    "use strict";44    if (!@isReadableByteStreamController(this))45        throw @makeThisTypeError("ReadableByteStreamController", "error");46    if (this.@controlledReadableStream.@state !== @streamReadable)47        @throwTypeError("ReadableStream is not readable");48    @readableByteStreamControllerError(this, error);49}50function close()51{52    "use strict";53    if (!@isReadableByteStreamController(this))54        throw @makeThisTypeError("ReadableByteStreamController", "close");55    if (this.@closeRequested)56        @throwTypeError("Close has already been requested");57    if (this.@controlledReadableStream.@state !== @streamReadable)58        @throwTypeError("ReadableStream is not readable");59    @readableByteStreamControllerClose(this);60}61@getter62function byobRequest()63{64    "use strict";65    if (!@isReadableByteStreamController(this))66        throw @makeGetterTypeError("ReadableByteStreamController", "byobRequest");67    if (this.@byobRequest === @undefined && this.@pendingPullIntos.length) {68        const firstDescriptor = this.@pendingPullIntos[0];69        const view = new @Uint8Array(firstDescriptor.buffer,70            firstDescriptor.byteOffset + firstDescriptor.bytesFilled,71            firstDescriptor.byteLength - firstDescriptor.bytesFilled);72        this.@byobRequest = new @ReadableStreamBYOBRequest(this, view);73    }74    return this.@byobRequest;75}76@getter77function desiredSize()78{79    "use strict";80    if (!@isReadableByteStreamController(this))81        throw @makeGetterTypeError("ReadableByteStreamController", "desiredSize");82    return @readableByteStreamControllerGetDesiredSize(this);...

Using AI Code Generation

1var rs = new ReadableStream({2    start(c) {3        c.enqueue("a");4        c.enqueue("b");5        c.close();6    }7});8var reader = rs.getReader();9reader.read().then(function(result) {10    console.log(result.value);11    console.log(result.done);12    return reader.read();13}).then(function(result) {14    console.log(result.value);15    console.log(result.done);16    return reader.read();17}).then(function(result) {18    console.log(result.value);19    console.log(result.done);20});

Using AI Code Generation

1import { ReadableStream, ReadableByteStreamControllerClose } from 'streams';2const rs = new ReadableStream();3const reader = rs.getReader();4const controller = reader.releaseLock().controller;5ReadableByteStreamControllerClose(controller);6>  interface ReadableStreamController {7>    readonly attribute ReadableStream stream;8>    readonly attribute boolean desiredSize;9> +  void close(); 10>  interface ReadableStreamDefaultController {11>    readonly attribute ReadableStream stream;12> +  readonly attribute boolean desiredSize; 13>  interface ReadableStreamDefaultController {14>    readonly attribute ReadableStream stream;15> +  void close(); 16>  interface ReadableStreamController {17>    readonly attribute ReadableStream stream;18>    readonly attribute boolean desiredSize;19> +  void close(); 20>  interface ReadableStreamDefaultController {21>    readonly attribute ReadableStream stream;22> +  readonly attribute boolean desiredSize;

Using AI Code Generation

1var test = async_test('ReadableByteStreamControllerClose method of wpt');2var startCalled = false;3var pullCalled = false;4var cancelCalled = false;5var byobRequest;6var controller;7var rs = new ReadableStream({8  start: function(c) {9    controller = c;10    test.step(function() {11      assert_equals(byobRequest, undefined, 'byobRequest should be undefined');12      assert_equals(controller.byobRequest, undefined, 'byobRequest should be undefined');13    });14    startCalled = true;15  },16  pull: function(c) {17    test.step(function() {18      assert_equals(byobRequest, undefined, 'byobRequest should be undefined');19      assert_equals(controller.byobRequest, undefined, 'byobRequest should be undefined');20    });21    pullCalled = true;22  },23  cancel: function() {24    cancelCalled = true;25  },26});27var reader = rs.getReader({ mode: 'byob' });28test.step(function() {29  assert_true(startCalled, 'start should have been called');30  assert_false(pullCalled, 'pull should not have been called');31  assert_false(cancelCalled, 'cancel should not have been called');32});33test.step(function() {34  assert_equals(reader.read(new Uint8Array(0)).then(function(r) {35    assert_true(r.done, 'done');36    assert_equals(r.value, undefined, 'value');37  }), undefined, 'read() should return undefined');38});39test.step(function() {40  assert_true(startCalled, 'start should have been called');41  assert_true(pullCalled, 'pull should have been called');42  assert_false(cancelCalled, 'cancel should not have been called');43});44test.step(function() {45  assert_equals(reader.read(new Uint8Array(0)).then(function(r) {46    assert_true(r.done, 'done');47    assert_equals(r.value, undefined, 'value');48  }), undefined, 'read() should return undefined');49});50test.step(function() {51  assert_true(startCalled, 'start should have been called');52  assert_true(pullCalled, 'pull should have been called');53  assert_false(cancelCalled, 'cancel should not have been called');54});55test.step(function() {56  assert_equals(reader.read(new Uint8Array(0)).then(function(r) {57    assert_true(r.done, 'done');58    assert_equals(r.value, undefined, 'value');

Using AI Code Generation

1var rs = new ReadableStream({2    start(controller) {3        controller.enqueue(new Uint8Array([0x01, 0x02, 0x03]));4        controller.close();5        assert_throws(new TypeError(), () => controller.close());6    }7});8rs.getReader().read().then(r => {9    assert_true(r.done);10    assert_array_equals(r.value, new Uint8Array([0x01, 0x02, 0x03]));11});12I think this test is not correct because it doesn’t test the behavior of ReadableStream when it is closed. It tests the behavior of ReadableByteStreamControllerClose() which is an internal method. I think the test should be like the following:13var rs = new ReadableStream({14    start(controller) {15        controller.enqueue(new Uint8Array([0x01, 0x02, 0x03]));16        controller.close();17    }18});19rs.getReader().read().then(r => {20    assert_true(r.done);21    assert_array_equals(r.value, new Uint8Array([0x01, 0x02, 0x03]));22    assert_throws(new TypeError(), () => controller.close());23});

Using AI Code Generation

1var rs = new ReadableStream({2  pull: function(controller) {3    controller.enqueue(new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]));4  }5});6var reader = rs.getReader();7var read = reader.read();8read.then(function(result) {9  console.log(result.value.byteLength);10  var writer = rs.getWriter();11  writer.write(new Uint8Array([10, 11, 12, 13, 14, 15, 16, 17, 18, 19]));12  writer.close();13  var read2 = reader.read();14  read2.then(function(result) {15    console.log(result.value.byteLength);16    var read3 = reader.read();17    read3.then(function(result) {18      console.log(result.value.byteLength);19    });20  });21});

Using AI Code Generation

1import { ReadableStream, ReadableByteStreamControllerClose } from "streams";2import { ByteLengthQueuingStrategy } from "web-streams-polyfill/ponyfill/es6";3import { ReadableStreamBYOBReader } from "web-streams-polyfill/ponyfill/es6";4const { test, assert_equals } = Deno;5test(function testReadableByteStreamControllerClose() {6  const byobStrategy = new ByteLengthQueuingStrategy({ highWaterMark: 0 });7  const rs = new ReadableStream({8    pull(controller) {9      controller.enqueue(new Uint8Array([0x01]));10    },11  }, byobStrategy);12  const reader = rs.getReader({ mode: "byob" });13  const view = new Uint8Array(1);14  reader.read(view).then(() => {15    assert_equals(view[0], 0x01);16    assert_equals(reader.closed, undefined);17    ReadableByteStreamControllerClose(controller);18    assert_equals(reader.closed, undefined);19  });20});21ReadableByteStreamControllerClose(controller);22Thank you for the reply. I am still confused. I am trying to create a test for the method ReadableByteStreamControllerClose . I am using the test.js file as the entry point for the test. I have imported the ReadableByteStreamControllerClose method from the wpt readable-streams/readable-byte-streams/general.js file. I am

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