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How to use ReadableStreamHasBYOBReader method in wpt

Best JavaScript code snippet using wpt

ReadableByteStreamInternals.js

Source:ReadableByteStreamInternals.js

1/*2 * Copyright (C) 2016 Canon Inc. All rights reserved.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(READABLE_STREAM_API) && ENABLE(READABLE_BYTE_STREAM_API)26// @internal27function privateInitializeReadableByteStreamController(stream, underlyingByteSource, highWaterMark)28{29    "use strict";30    if (!@isReadableStream(stream))31        @throwTypeError("ReadableByteStreamController needs a ReadableStream");32    // readableStreamController is initialized with null value.33    if (stream.@readableStreamController !== null)34        @throwTypeError("ReadableStream already has a controller");35    this.@controlledReadableStream = stream;36    this.@underlyingByteSource = underlyingByteSource;37    this.@pullAgain = false;38    this.@pulling = false;39    @readableByteStreamControllerClearPendingPullIntos(this);40    this.@queue = [];41    this.@totalQueuedBytes = 0;42    this.@started = false;43    this.@closeRequested = false;44    let hwm = @Number(highWaterMark);45    if (@isNaN(hwm) || hwm < 0)46        @throwRangeError("highWaterMark value is negative or not a number");47    this.@strategyHWM = hwm;48    let autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;49    if (autoAllocateChunkSize !== @undefined) {50        autoAllocateChunkSize = @Number(autoAllocateChunkSize);51        if (autoAllocateChunkSize <= 0 || autoAllocateChunkSize === @Number.POSITIVE_INFINITY || autoAllocateChunkSize === @Number.NEGATIVE_INFINITY)52            @throwRangeError("autoAllocateChunkSize value is negative or equal to positive or negative infinity");53    }54    this.@autoAllocateChunkSize = autoAllocateChunkSize;55    this.@pendingPullIntos = [];56    const controller = this;57    const startResult = @promiseInvokeOrNoopNoCatch(underlyingByteSource, "start", [this]).@then(() => {58        controller.@started = true;59        @assert(!controller.@pulling);60        @assert(!controller.@pullAgain);61        @readableByteStreamControllerCallPullIfNeeded(controller);62    }, (error) => {63        if (stream.@state === @streamReadable)64            @readableByteStreamControllerError(controller, error);65    });66    this.@cancel = @readableByteStreamControllerCancel;67    this.@pull = @readableByteStreamControllerPull;68    return this;69}70function privateInitializeReadableStreamBYOBRequest(controller, view)71{72    "use strict";73    this.@associatedReadableByteStreamController = controller;74    this.@view = view;75}76function isReadableByteStreamController(controller)77{78    "use strict";79    // Same test mechanism as in isReadableStreamDefaultController (ReadableStreamInternals.js).80    // See corresponding function for explanations.81    return @isObject(controller) && !!controller.@underlyingByteSource;82}83function isReadableStreamBYOBRequest(byobRequest)84{85    "use strict";86    // Same test mechanism as in isReadableStreamDefaultController (ReadableStreamInternals.js).87    // See corresponding function for explanations.88    return @isObject(byobRequest) && !!byobRequest.@associatedReadableByteStreamController;89}90function isReadableStreamBYOBReader(reader)91{92    "use strict";93    // FIXME: Since BYOBReader is not yet implemented, always return false.94    // To be implemented at the same time as BYOBReader (see isReadableStreamDefaultReader95    // to apply same model).96    return false;97}98function readableByteStreamControllerCancel(controller, reason)99{100    "use strict";101    if (controller.@pendingPullIntos.length > 0)102        controller.@pendingPullIntos[0].bytesFilled = 0;103    controller.@queue = [];104    controller.@totalQueuedBytes = 0;105    return @promiseInvokeOrNoop(controller.@underlyingByteSource, "cancel", [reason]);106}107function readableByteStreamControllerError(controller, e)108{109    "use strict";110    @assert(controller.@controlledReadableStream.@state === @streamReadable);111    @readableByteStreamControllerClearPendingPullIntos(controller);112    controller.@queue = [];113    @readableStreamError(controller.@controlledReadableStream, e);114}115function readableByteStreamControllerClose(controller)116{117    "use strict";118    @assert(!controller.@closeRequested);119    @assert(controller.@controlledReadableStream.@state === @streamReadable);120    if (controller.@totalQueuedBytes > 0) {121        controller.@closeRequested = true;122        return;123    }124    if (controller.@pendingPullIntos.length > 0) {125        if (controller.@pendingPullIntos[0].bytesFilled > 0) {126            const e = new @TypeError("Close requested while there remain pending bytes");127            @readableByteStreamControllerError(controller, e);128            throw e;129        }130    }131    @readableStreamClose(controller.@controlledReadableStream);132}133function readableByteStreamControllerClearPendingPullIntos(controller)134{135    "use strict";136    // FIXME: To be implemented in conjunction with ReadableStreamBYOBRequest.137}138function readableByteStreamControllerGetDesiredSize(controller)139{140   "use strict";141   return controller.@strategyHWM - controller.@totalQueuedBytes;142}143function readableStreamHasBYOBReader(stream)144{145    "use strict";146    return stream.@reader !== @undefined && @isReadableStreamBYOBReader(stream.@reader);147}148function readableStreamHasDefaultReader(stream)149{150    "use strict";151    return stream.@reader !== @undefined && @isReadableStreamDefaultReader(stream.@reader);152}153function readableByteStreamControllerHandleQueueDrain(controller) {154    "use strict";155    @assert(controller.@controlledReadableStream.@state === @streamReadable);156    if (!controller.@totalQueuedBytes && controller.@closeRequested)157        @readableStreamClose(controller.@controlledReadableStream);158    else159        @readableByteStreamControllerCallPullIfNeeded(controller);160}161function readableByteStreamControllerPull(controller)162{163    "use strict";164    const stream = controller.@controlledReadableStream;165    @assert(@readableStreamHasDefaultReader(stream));166    if (controller.@totalQueuedBytes > 0) {167        @assert(stream.@reader.@readRequests.length === 0);168        const entry = controller.@queue.@shift();169        controller.@totalQueuedBytes -= entry.byteLength;170        @readableByteStreamControllerHandleQueueDrain(controller);171        let view;172        try {173            view = new @Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);174        } catch (error) {175            return @Promise.@reject(error);176        }177        return @Promise.@resolve({value: view, done: false});178    }179    if (controller.@autoAllocateChunkSize !== @undefined) {180        let buffer;181        try {182            buffer = new @ArrayBuffer(controller.@autoAllocateChunkSize);183        } catch (error) {184            return @Promise.@reject(error);185        }186        const pullIntoDescriptor = {187            buffer,188            byteOffset: 0,189            byteLength: controller.@autoAllocateChunkSize,190            bytesFilled: 0,191            elementSize: 1,192            ctor: @Uint8Array,193            readerType: 'default'194        };195        controller.@pendingPullIntos.@push(pullIntoDescriptor);196    }197    const promise = @readableStreamAddReadRequest(stream);198    @readableByteStreamControllerCallPullIfNeeded(controller);199    return promise;200}201function readableByteStreamControllerShouldCallPull(controller)202{203    "use strict";204    const stream = controller.@controlledReadableStream;205    if (stream.@state !== @streamReadable)206        return false;207    if (controller.@closeRequested)208        return false;209    if (!controller.@started)210        return false;211    if (@readableStreamHasDefaultReader(stream) && stream.@reader.@readRequests.length > 0)212        return true;213    if (@readableStreamHasBYOBReader(stream) && stream.@reader.@readIntoRequests.length > 0)214        return true;215    if (@readableByteStreamControllerGetDesiredSize(controller) > 0)216        return true;217    return false;218}219function readableByteStreamControllerCallPullIfNeeded(controller)220{221    "use strict";222    if (!@readableByteStreamControllerShouldCallPull(controller))223        return;224    if (controller.@pulling) {225        controller.@pullAgain = true;226        return;227    }228    @assert(!controller.@pullAgain);229    controller.@pulling = true;230    @promiseInvokeOrNoop(controller.@underlyingByteSource, "pull", [controller]).@then(() => {231        controller.@pulling = false;232        if (controller.@pullAgain) {233            controller.@pullAgain = false;234            @readableByteStreamControllerCallPullIfNeeded(controller);235        }236    }, (error) => {237        if (controller.@controlledReadableStream.@state === @streamReadable)238            @readableByteStreamControllerError(controller, error);239    });240}241function transferBufferToCurrentRealm(buffer)242{243    "use strict";244    // FIXME: Determine what should be done here exactly (what is already existing in current245    // codebase and what has to be added). According to spec, Transfer operation should be246    // performed in order to transfer buffer to current realm. For the moment, simply return247    // received buffer.248    return buffer;249}250function readableByteStreamControllerEnqueue(controller, chunk)251{252    "use strict";253    const stream = controller.@controlledReadableStream;254    @assert(!controller.@closeRequested);255    @assert(stream.@state === @streamReadable);256    const buffer = chunk.buffer;257    const byteOffset = chunk.byteOffset;258    const byteLength = chunk.byteLength;259    const transferredBuffer = @transferBufferToCurrentRealm(buffer);260    if (@readableStreamHasDefaultReader(stream)) {261        if (!stream.@reader.@readRequests.length)262            @readableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);263        else {264            @assert(!controller.@queue.length);265            let transferredView = new @Uint8Array(transferredBuffer, byteOffset, byteLength);266            @readableStreamFulfillReadRequest(stream, transferredView, false);267        }268        return;269    }270    if (@readableStreamHasBYOBReader(stream)) {271        // FIXME: To be implemented once ReadableStreamBYOBReader has been implemented (for the moment,272        // test cannot be true).273        @throwTypeError("ReadableByteStreamController enqueue operation has no support for BYOB reader");274        return;275    }276    @assert(!@isReadableStreamLocked(stream));277    @readableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);278}279function readableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength)280{281    "use strict";282    controller.@queue.@push({283        buffer: buffer,284        byteOffset: byteOffset,285        byteLength: byteLength286    });287    controller.@totalQueuedBytes += byteLength;...

Using AI Code Generation

1var rs = new ReadableStream({2    start(controller) {3        var view = controller.byobRequest.view;4        view[0] = 0x61;5        view[1] = 0x62;6        view[2] = 0x63;7        controller.byobRequest.respond(3);8    }9});10var reader = rs.getReader({ mode: "byob" });11var view = new Uint8Array(3);12var result = await reader.read(view);13assert_array_equals(view, [0x61, 0x62, 0x63], "view should contain the data written to the stream");14assert_equals(result.value, undefined, "result.value");15assert_false(result.done, "result.done");16var rs = new ReadableStream({17    start(controller) {18        controller.enqueue("a");19        controller.enqueue("b");20        controller.enqueue("c");21    }22});23var reader = rs.getReader();24var result = await reader.read();25assert_equals(result.value, "a", "result.value");26assert_false(result.done, "result.done");27var rs = new ReadableStream();28var reader = rs.getReader();29assert_false(rs.locked, "stream should not be locked");30assert_false(rs.disturbed, "stream should not be disturbed");31var result = await reader.read();32assert_true(rs.locked, "stream should be locked");33assert_true(rs.disturbed, "stream should be disturbed");34var rs = new ReadableStream();35var reader = rs.getReader();36assert_false(rs.locked, "stream should not be locked");37assert_false(rs.disturbed, "stream should not be disturbed");38var result = await reader.read();39assert_true(rs.locked, "stream should be locked");40assert_true(rs.disturbed, "stream should be disturbed");41var rs = new ReadableStream({42    start(controller) {43        controller.enqueue("a");44        controller.enqueue("b");45        controller.enqueue("c");46        controller.close();47    }48});49var [branch1, branch2] = rs.tee();

Using AI Code Generation

1var rs = new ReadableStream({2    pull: function(controller) {3        controller.enqueue(new Uint8Array([0x01, 0x02, 0x03]));4        controller.close();5    }6});7var reader = rs.getReader({ mode: 'byob' });8assert_true(ReadableStreamHasBYOBReader(rs), 'ReadableStreamHasBYOBReader should return true');9assert_true(reader instanceof ReadableStreamBYOBReader, 'reader should be a ReadableStreamBYOBReader');10var rs = new ReadableStream({11    pull: function(controller) {12        controller.enqueue(new Uint8Array([0x01, 0x02, 0x03]));13        controller.close();14    }15});16var reader = rs.getReader();17assert_true(ReadableStreamHasDefaultReader(rs), 'ReadableStreamHasDefaultReader should return true');18assert_true(reader instanceof ReadableStreamDefaultReader, 'reader should be a ReadableStreamDefaultReader');19var rs = new ReadableStream({20    pull: function(controller) {21        controller.enqueue(new Uint8Array([0x01, 0x02, 0x03]));22        controller.close();23    }24});25var reader = rs.getReader({ mode: 'byob' });26assert_true(ReadableStreamHasBYOBReader(rs), 'ReadableStreamHasBYOBReader should return true');27assert_true(reader instanceof ReadableStreamBYOBReader, 'reader should be a ReadableStreamBYOBReader');28var rs = new ReadableStream({29    pull: function(controller) {30        controller.enqueue(new Uint8Array([0x01, 0x02, 0x03]));31        controller.close();32    }33});34var reader = rs.getReader();35assert_true(ReadableStreamHasDefaultReader(rs), 'ReadableStreamHasDefaultReader should return true');36assert_true(reader instanceof ReadableStreamDefaultReader, 'reader should be a ReadableStreamDefaultReader');

Using AI Code Generation

1var rs = new ReadableStream({2  pull: function(c) {3    c.enqueue(new Uint8Array([0x01, 0x02]));4    c.close();5  }6});7var reader = rs.getReader({ mode: 'byob' });8assert_true(ReadableStreamHasBYOBReader(rs), 'ReadableStreamHasBYOBReader should return true');9assert_equals(ReadableStreamHasBYOBReader(new ReadableStream()), false, 'ReadableStreamHasBYOBReader should return false');10var rs = new ReadableStream({11  pull: function(c) {12    c.enqueue(new Uint8Array([0x01, 0x02]));13    c.close();14  }15});16var reader = rs.getReader();17assert_false(ReadableStreamHasBYOBReader(rs), 'ReadableStreamHasBYOBReader should return false');18var rs = new ReadableStream({19  pull: function(c) {20    c.enqueue(new Uint8Array([0x01, 0x02]));21    c.close();22  }23});24var reader = rs.getReader({ mode: 'byob' });25var byobRequest1 = reader.read(new Uint8Array(1));26var byobRequest2 = reader.read(new Uint8Array(1));27assert_equals(ReadableStreamGetNumReadIntoRequests(rs), 2, 'ReadableStreamGetNumReadIntoRequests should return 2');28assert_equals(ReadableStreamGetNumReadIntoRequests(new ReadableStream()), 0, 'ReadableStreamGetNumReadIntoRequests should return 0');29var rs = new ReadableStream({30  pull: function(c) {31    c.enqueue(new Uint8Array([0x01, 0x02]));32    c.close();33  }34});35var reader = rs.getReader();36var readRequest = reader.read();37assert_equals(ReadableStreamGetNumReadIntoRequests(rs), 0, 'ReadableStreamGetNumReadIntoRequests should return 0');38var rs = new ReadableStream({39  pull: function(c) {40    c.enqueue(new Uint8Array([0x01, 0x

Using AI Code Generation

1const { ReadableStream, ReadableStreamBYOBRequest } = require('stream/web');2const reader = new ReadableStream().getReader({ mode: 'byob' });3assert_true(reader instanceof ReadableStreamBYOBRequest);4assert_equals(typeof reader.constructor, 'function');5assert_equals(reader.constructor.name, 'ReadableStreamBYOBReader');6assert_equals(Object.getPrototypeOf(reader), ReadableStreamBYOBReader.prototype);7const { ReadableStream, ReadableStreamDefaultRequest } = require('stream/web');8const reader = new ReadableStream().getReader();9assert_true(reader instanceof ReadableStreamDefaultRequest);10assert_equals(typeof reader.constructor, 'function');11assert_equals(reader.constructor.name, 'ReadableStreamDefaultReader');12assert_equals(Object.getPrototypeOf(reader), ReadableStreamDefaultReader.prototype);13const { ReadableStream } = require('stream/web');14const rs = new ReadableStream();15assert_true(rs[Symbol.asyncIterator] instanceof Function);16const { ReadableStream } = require('stream/web');17const rs = new ReadableStream();18assert_true(rs[Symbol.asyncIterator].prototype instanceof Object);19const { ReadableStream } = require('stream/web');20const rs = new ReadableStream();21assert_true(rs[Symbol.asyncIterator].prototype.next instanceof Function);22const { ReadableStream } = require('stream/web');23const rs = new ReadableStream();24assert_true(rs[Symbol.asyncIterator].prototype.return instanceof Function);25const { ReadableStream } = require('stream/web');26const rs = new ReadableStream();27assert_true(rs[Symbol.asyncIterator].prototype.throw instanceof Function);28const { ReadableStream } = require('stream/web');29const rs = new ReadableStream();

Using AI Code Generation

1const { ReadableStream, ReadableStreamBYOBReader } = require('stream/web');2const stream = new ReadableStream({3  pull(c) {4  }5});6const reader = stream.getReader({ mode: 'byob' });7assert_true(reader instanceof ReadableStreamBYOBReader);8assert_true(reader instanceof ReadableStreamDefaultReader);9assert_true(ReadableStreamHasBYOBReader(stream));10assert_true(reader instanceof ReadableStreamDefaultReader);11assert_false(ReadableStreamHasDefaultReader(stream));12assert_false(reader instanceof ReadableStreamBYOBReader);13assert_false(ReadableStreamHasBYOBReader(stream));14assert_true(ReadableStreamHasDefaultReader(stream));15const { ReadableStream, ReadableStreamDefaultReader } = require('stream/web');16const stream = new ReadableStream({17  pull(c) {18  }19});20const reader = stream.getReader({ mode: 'byob' });21assert_true(reader instanceof ReadableStreamBYOBReader);22assert_true(reader instanceof ReadableStreamDefaultReader);23assert_true(ReadableStreamHasBYOBReader(stream));24assert_true(reader instanceof ReadableStreamDefaultReader);25assert_false(ReadableStreamHasDefaultReader(stream));26assert_false(reader instanceof ReadableStreamBYOBReader);27assert_false(ReadableStreamHasBYOBReader(stream));28assert_true(ReadableStreamHasDefaultReader(stream));29const { ReadableStream, ReadableStreamDefaultReader } = require('stream/web');30const stream = new ReadableStream({31  pull(c) {32  }33});34const reader = stream.getReader({ mode: 'byob' });35assert_true(reader instanceof ReadableStreamBYOBReader);36assert_true(reader instanceof ReadableStreamDefaultReader);37assert_true(ReadableStreamHasBYOBReader(stream));38assert_true(reader instanceof

Using AI Code Generation

1const assert = require('assert');2const { ReadableStream, ReadableStreamBYOBRequest } = require('stream/web');3const { ReadableStreamHasBYOBReader } = require('stream/web');4const { ReadableStreamBYOBReader } = require('stream/web');5const { ReadableStreamDefaultReader } = require('stream/web');6const { ReadableStreamDefaultController } = require('stream/web');7const { ReadableByteStreamController } = require('stream/web');8const rs = new ReadableStream({9  pull(controller) {10    controller.enqueue(new Uint8Array([1, 2, 3, 4]));11  }12});13const reader = rs.getReader({ mode: 'byob' });14assert(ReadableStreamHasBYOBReader(rs) === true);15assert(ReadableStreamHasBYOBReader(reader) === true);16assert(ReadableStreamHasBYOBReader(new ReadableStream()) === false);17assert(ReadableStreamHasBYOBReader(new ReadableStreamDefaultReader(new ReadableStream())) === false);18assert(ReadableStreamHasBYOBReader(new ReadableStreamBYOBReader(new ReadableStream())) === true);19assert(ReadableStreamHasBYOBReader(new ReadableStreamDefaultController()) === false);20assert(ReadableStreamHasBYOBReader(new ReadableByteStreamController()) === false);21assert(ReadableStreamHasBYOBReader() === false);22const assert = require('assert');23const { ReadableStream, ReadableStreamBYOBRequest } = require('stream/web');24const { ReadableStreamHasDefaultReader } = require('stream/web');25const { ReadableStreamBYOBReader } = require('stream/web');26const { ReadableStreamDefaultReader } = require('stream/web');27const { ReadableStreamDefaultController } = require('stream/web');28const { ReadableByteStreamController } = require('stream/web');29const rs = new ReadableStream({30  pull(controller) {31    controller.enqueue('a');32    controller.enqueue('b');33    controller.enqueue('c');34  }35});36const reader = rs.getReader();37assert(ReadableStreamHasDefaultReader(rs) === true);38assert(ReadableStreamHasDefaultReader(reader) === true);39assert(ReadableStreamHasDefaultReader(new ReadableStream()) === false);40assert(ReadableStreamHasDefaultReader(new ReadableStreamDefaultReader(new Readable

Using AI Code Generation

1const { ReadableStream, ReadableStreamBYOBReader } = require('stream/web');2const readable = new ReadableStream({3  pull(c) {4  }5});6const reader = new ReadableStreamBYOBReader(readable);7const { ReadableStream, ReadableStreamDefaultReader } = require('stream/web');8const readable = new ReadableStream({9  pull(c) {10  }11});12const reader = new ReadableStreamDefaultReader(readable);13const { WritableStream } = require('stream/web');14const ws = new WritableStream({15  write() {16    return Promise.reject(new Error('oh no!'));17  }18});19const { WritableStream } = require('stream/web');20const ws = new WritableStream({21  write() {22    return Promise.reject(new Error('oh no!'));23  }24});25const { WritableStream } = require('stream/web');26const ws = new WritableStream({27  write() {28    return Promise.reject(new Error('oh no!'));29  }30});31const writer = ws.getWriter();32const { WritableStream } = require('stream/web');33const ws = new WritableStream({34  write() {35    return Promise.reject(new Error('oh no!'));36  }37});38const writer = ws.getWriter();

Using AI Code Generation

1var test = async_test("ReadableStreamHasBYOBReader method exists");2test.step(function() {3  assert_true("ReadableStreamHasBYOBReader" in self, 'ReadableStreamHasBYOBReader method exists' );4  test.done();5});6promise_test(() => {7  const rs = new ReadableStream({8    start(controller) {9      controller.enqueue(new Uint8Array([1, 2, 3]));10    }11  });12  const reader = rs.getReader({ mode: "byob" });13  return reader.read(new Uint8Array(3)).then(result => {14    assert_object_equals(result, { value: new Uint8Array([1, 2, 3]), done: false }, "result");15    assert_false(ReadableStreamHasBYOBReader(rs), "ReadableStreamHasBYOBReader should return false");16  });17}, "ReadableStreamHasBYOBReader should return false when there is no BYOB reader");18promise_test(() => {19  const rs = new ReadableStream({20    start(controller) {21      controller.enqueue(new Uint8Array([1, 2, 3]));22    }23  });24  const reader = rs.getReader();25  return reader.read().then(result => {26    assert_object_equals(result, { value: new Uint8Array([1, 2, 3]), done: false }, "result");27    assert_false(ReadableStreamHasBYOBReader(rs), "ReadableStreamHasBYOBReader should return false");28  });29}, "ReadableStreamHasBYOBReader should return false when there is no BYOB reader");

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