Best JavaScript code snippet using wpt
default-controller.ts
Source:default-controller.ts
...169 }170 if (!controller._started) {171 return false;172 }173 if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {174 return true;175 }176 const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);177 assert(desiredSize !== null);178 if (desiredSize! > 0) {179 return true;180 }181 return false;182}183function ReadableStreamDefaultControllerClearAlgorithms(controller: ReadableStreamDefaultController<any>) {184 controller._pullAlgorithm = undefined!;185 controller._cancelAlgorithm = undefined!;186 controller._strategySizeAlgorithm = undefined!;187}188// A client of ReadableStreamDefaultController may use these functions directly to bypass state check.189export function ReadableStreamDefaultControllerClose(controller: ReadableStreamDefaultController<any>) {190 if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {191 return;192 }193 const stream = controller._controlledReadableStream;194 controller._closeRequested = true;195 if (controller._queue.length === 0) {196 ReadableStreamDefaultControllerClearAlgorithms(controller);197 ReadableStreamClose(stream);198 }199}200export function ReadableStreamDefaultControllerEnqueue<R>(controller: ReadableStreamDefaultController<R>, chunk: R): void {201 if (!ReadableStreamDefaultControllerCanCloseOrEnqueue(controller)) {202 return;203 }204 const stream = controller._controlledReadableStream;205 if (IsReadableStreamLocked(stream) && ReadableStreamGetNumReadRequests(stream) > 0) {206 ReadableStreamFulfillReadRequest(stream, chunk, false);207 } else {208 let chunkSize;209 try {210 chunkSize = controller._strategySizeAlgorithm(chunk);211 } catch (chunkSizeE) {212 ReadableStreamDefaultControllerError(controller, chunkSizeE);213 throw chunkSizeE;214 }215 try {216 EnqueueValueWithSize(controller, chunk, chunkSize);217 } catch (enqueueE) {218 ReadableStreamDefaultControllerError(controller, enqueueE);219 throw enqueueE;...
readable_stream_controller.ts
Source:readable_stream_controller.ts
...162 return false;163 }164 if (165 IsReadableStreamLocked(stream) &&166 ReadableStreamGetNumReadRequests(stream) > 0167 ) {168 return true;169 }170 const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);171 Assert(desiredSize !== null);172 return desiredSize > 0;173}174export function ReadableStreamDefaultControllerClearAlgorithms<T>(175 controller: ReadableStreamDefaultController<T>176) {177 controller.pullAlgorithm = void 0;178 controller.cancelAlgorithm = void 0;179 controller.strategySizeAlgorithm = void 0;180}181export function ReadableStreamDefaultControllerClose<T>(controller) {182 const stream = controller.controlledReadableStream;183 Assert(ReadableStreamDefaultControllerCanCloseOrEnqueue(controller));184 controller.closeRequested = true;185 if (controller.queue.length === 0) {186 ReadableStreamDefaultControllerClearAlgorithms(controller);187 ReadableStreamClose(stream);188 }189}190export function ReadableStreamDefaultControllerEnqueue<T>(controller, chunk) {191 if (IsReadableStreamDefaultController(controller)) {192 const stream = controller.controlledReadableStream;193 Assert(ReadableStreamDefaultControllerCanCloseOrEnqueue(controller));194 if (195 IsReadableStreamLocked(stream) &&196 ReadableStreamGetNumReadRequests(stream) > 0197 ) {198 ReadableStreamFulfillReadRequest(stream, chunk, false);199 } else {200 let result: number;201 try {202 result = controller.strategySizeAlgorithm(chunk);203 } catch (e) {204 ReadableStreamDefaultControllerError(controller, e);205 return e;206 }207 const chunkSize = result;208 try {209 EnqueueValueWithSize(controller, chunk, chunkSize);210 } catch (e) {...
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"...
Using AI Code Generation
1var rs = new ReadableStream({2 start: function(controller) {3 controller.enqueue("a");4 controller.enqueue("b");5 controller.close();6 }7});8var reader = rs.getReader();9var read1 = reader.read();10read1.then(function(result1) {11 assert_equals(result1.value, "a", "The first chunk read should have value 'a'");12 assert_equals(result1.done, false, "The first chunk read should be done");13 var read2 = reader.read();14 read2.then(function(result2) {15 assert_equals(result2.value, "b", "The second chunk read should have value 'b'");16 assert_equals(result2.done, false, "The second chunk read should be done");17 var read3 = reader.read();18 read3.then(function(result3) {19 assert_equals(result3.value, undefined, "The third chunk read should have value 'undefined'");20 assert_equals(result3.done, true, "The third chunk read should be done");21 test(function() {22 assert_equals(ReadableStreamGetNumReadRequests(rs), 0, 'ReadableStreamGetNumReadRequests should return 0');23 }, 'ReadableStreamGetNumReadRequests should return 0');24 });25 });26});27var test = async_test("ReadableStreamGetNumReadRequests should return 0");28test.step(function() {29 var rs = new ReadableStream({30 start: function(controller) {31 controller.enqueue("a");32 controller.enqueue("b");33 controller.close();34 }35 });36 var reader = rs.getReader();37 var read1 = reader.read();38 read1.then(function(result1) {39 assert_equals(result1.value, "a", "The first chunk read should have value 'a'");40 assert_equals(result1.done, false, "The first chunk read should be done");41 var read2 = reader.read();42 read2.then(function(result2) {43 assert_equals(result2.value, "b", "The second chunk read should have value 'b'");44 assert_equals(result2.done, false, "The second chunk read should be done");45 var read3 = reader.read();46 read3.then(function(result3) {47 assert_equals(result3.value, undefined, "The third chunk read should have value 'undefined'");48 assert_equals(result3.done, true, "The third chunk read should be done");49 test.step(function
Using AI Code Generation
1assert_equals(ReadableStreamGetNumReadRequests(stream), 0, 'ReadableStreamGetNumReadRequests should return 0');2const reader = stream.getReader();3assert_equals(ReadableStreamGetNumReadRequests(stream), 0, 'ReadableStreamGetNumReadRequests should return 0');4reader.read();5assert_equals(ReadableStreamGetNumReadRequests(stream), 1, 'ReadableStreamGetNumReadRequests should return 1');6reader.read();7assert_equals(ReadableStreamGetNumReadRequests(stream), 2, 'ReadableStreamGetNumReadRequests should return 2');8const controller = new WritableStreamDefaultController();9assert_equals(WritableStreamDefaultControllerGetBackpressure(controller), false, 'WritableStreamDefaultControllerGetBackpressure should return false');10controller.desiredSize = 0;11assert_equals(WritableStreamDefaultControllerGetBackpressure(controller), true, 'WritableStreamDefaultControllerGetBackpressure should return true');12assert_equals(ReadableStreamGetNumReadIntoRequests(stream), 0, 'ReadableStreamGetNumReadIntoRequests should return 0');13const reader = stream.getReader({mode: 'byob'});14assert_equals(ReadableStreamGetNumReadIntoRequests(stream), 0, 'ReadableStreamGetNumReadIntoRequests should return 0');15const view = new Uint8Array(1);16reader.read(view);17assert_equals(ReadableStreamGetNumReadIntoRequests(stream), 1, 'ReadableStreamGetNumReadIntoRequests should return 1');18reader.read(view);19assert_equals(ReadableStreamGetNumReadIntoRequests(stream), 2, 'ReadableStreamGetNumReadIntoRequests should return 2');20assert_equals(ReadableStreamGetNumReadRequests(stream), 0, 'ReadableStreamGetNumReadRequests should return 0');21const reader = stream.getReader();22assert_equals(ReadableStreamGetNumReadRequests(stream), 0, 'ReadableStreamGetNumReadRequests should return 0');23reader.read();24assert_equals(ReadableStreamGetNumReadRequests(stream), 1, 'ReadableStreamGetNumReadRequests should return 1');25reader.read();26assert_equals(ReadableStreamGetNumReadRequests(stream), 2, 'ReadableStreamGetNumReadRequests should return 2');
Using AI Code Generation
1var rs = new ReadableStream({2 start: function(controller) {3 controller.enqueue("a");4 controller.enqueue("b");5 controller.enqueue("c");6 }7});8var reader = rs.getReader();9var read = reader.read();10read.then(function(result) {11 console.log(result.value);12 return reader.read();13}).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.done);21});22rs = new ReadableStream({23 start: function(controller) {24 controller.enqueue("a");25 controller.enqueue("b");26 controller.enqueue("c");27 }28});29reader = rs.getReader();30read = reader.read();31read.then(function(result) {32 console.log(result.value);33 return reader.read();34}).then(function(result) {35 console.log(result.value);36 return reader.read();37}).then(function(result) {38 console.log(result.value);39 return reader.read();40}).then(function(result) {41 console.log(result.done);42});43var rs = new ReadableStream({44 start: function(controller) {45 controller.enqueue("a");46 controller.enqueue("b");47 controller.enqueue("c");48 }49});50var reader = rs.getReader();51var read = reader.read();52read.then(function(result) {53 console.log(result.value);54 return reader.read();55}).then(function(result) {56 console.log(result.value);57 return reader.read();58}).then(function(result) {59 console.log(result.value);60 return reader.read();61}).then(function(result) {62 console.log(result.done);63});64rs = new ReadableStream({65 start: function(controller) {66 controller.enqueue("a");67 controller.enqueue("b");68 controller.enqueue("c");69 }70});71reader = rs.getReader();72read = reader.read();73read.then(function(result) {74 console.log(result.value);75 return reader.read();76}).then(function(result)
Using AI Code Generation
1var rs = new ReadableStream({2 start(c) {3 c.enqueue('a');4 c.enqueue('b');5 c.enqueue('c');6 c.close();7 }8});9rs.getReader().read().then(function(result) {10 assert_equals(result.value, 'a');11 assert_false(result.done);12 assert_equals(rs.getReader().readRequests.length, 0);13 return rs.getReader().read();14}).then(function(result) {15 assert_equals(result.value, 'b');16 assert_false(result.done);17 assert_equals(rs.getReader().readRequests.length, 0);18 return rs.getReader().read();19}).then(function(result) {20 assert_equals(result.value, 'c');21 assert_false(result.done);22 assert_equals(rs.getReader().readRequests.length, 0);23 return rs.getReader().read();24}).then(function(result) {25 assert_equals(result.value, undefined);26 assert_true(result.done);27 assert_equals(rs.getReader().readRequests.length, 0);28});29var rs = new ReadableStream({30 start(c) {31 c.enqueue(new Uint8Array([1, 2, 3]));32 c.enqueue(new Uint8Array([4, 5, 6]));33 c.enqueue(new Uint8Array([7, 8, 9]));34 c.close();35 }36});37rs.getReader({mode: 'byob'}).read(new Uint8Array(3)).then(function(result) {38 assert_array_equals(result.value, [1, 2, 3]);39 assert_false(result.done);40 assert_equals(rs.getReader({mode: 'byob'}).readIntoRequests.length, 0);41 return rs.getReader({mode: 'byob'}).read(new Uint8Array(3));42}).then(function(result) {43 assert_array_equals(result.value, [4, 5, 6]);44 assert_false(result.done);45 assert_equals(rs.getReader({mode: 'byob'}).readIntoRequests.length, 0);46 return rs.getReader({mode: 'byob'}).read(new Uint8Array(3));47}).then(function(result) {48 assert_array_equals(result.value, [7, 8, 9]);49 assert_false(result.done);50 assert_equals(rs.getReader({mode: 'byob'}).readIntoRequests.length
Using AI Code Generation
1var rs = new ReadableStream();2var readRequests = ReadableStreamGetNumReadRequests(rs);3assert_equals(readRequests, 0, 'ReadableStreamGetNumReadRequests returns 0');4var rs = new ReadableStream();5var readIntoRequests = ReadableStreamGetNumReadIntoRequests(rs);6assert_equals(readIntoRequests, 0, 'ReadableStreamGetNumReadIntoRequests returns 0');7var rs = new ReadableStream();8var readIntoRequests = ReadableStreamGetNumReadIntoRequests(rs);9assert_equals(readIntoRequests, 0, 'ReadableStreamGetNumReadIntoRequests returns 0');10var rs = new ReadableStream();11var readRequests = ReadableStreamGetNumReadRequests(rs);12assert_equals(readRequests, 0, 'ReadableStreamGetNumReadRequests returns 0');13var rs = new ReadableStream();14var readIntoRequests = ReadableStreamGetNumReadIntoRequests(rs);15assert_equals(readIntoRequests, 0, 'ReadableStreamGetNumReadIntoRequests returns 0');16var rs = new ReadableStream();17var readIntoRequests = ReadableStreamGetNumReadIntoRequests(rs);18assert_equals(readIntoRequests, 0, 'ReadableStreamGetNumReadIntoRequests returns 0');19var rs = new ReadableStream();20var readRequests = ReadableStreamGetNumReadRequests(rs);21assert_equals(readRequests, 0, 'ReadableStreamGetNumReadRequests returns 0');
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