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How to use TransformStreamErrorIfNeeded method in wpt
Best JavaScript code snippet using wpt
transform-stream.js
Source:transform-stream.js 
...32 } catch (e) {33 // This happens when readableStrategy.size() throws.34 // The ReadableStream has already errored itself.35 transformStream._readableClosed = true;36 TransformStreamErrorIfNeeded(transformStream, e);37 throw transformStream._storedError;38 }39 const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);40 const maybeBackpressure = desiredSize <= 0;41 if (maybeBackpressure === true && transformStream._backpressure === false) {42 // This allows pull() again. When desiredSize is 0, it's possible that a pull() will happen immediately (but43 // asynchronously) after this because of pending read()s and set _backpressure back to false.44 //45 // If pull() could be called from inside enqueue(), then this logic would be wrong. This cannot happen46 // because there is always a promise pending from start() or pull() when _backpressure is false.47 TransformStreamSetBackpressure(transformStream, true);48 }49}50function TransformStreamError(transformStream, e) {51 if (transformStream._errored === true) {52 throw new TypeError('TransformStream is already errored');53 }54 TransformStreamErrorInternal(transformStream, e);55}56// Abstract operations.57function TransformStreamCloseReadableInternal(transformStream) {58 assert(transformStream._errored === false);59 assert(transformStream._readableClosed === false);60 try {61 ReadableStreamDefaultControllerClose(transformStream._readableController);62 } catch (e) {63 assert(false);64 }65 transformStream._readableClosed = true;66}67function TransformStreamErrorIfNeeded(transformStream, e) {68 if (transformStream._errored === false) {69 TransformStreamErrorInternal(transformStream, e);70 }71}72function TransformStreamErrorInternal(transformStream, e) {73 // console.log('TransformStreamErrorInternal()');74 assert(transformStream._errored === false);75 transformStream._errored = true;76 transformStream._storedError = e;77 if (transformStream._writableDone === false) {78 WritableStreamDefaultControllerError(transformStream._writableController, e);79 }80 if (transformStream._readableClosed === false) {81 ReadableStreamDefaultControllerError(transformStream._readableController, e);82 }83}84// Used for preventing the next write() call on TransformStreamSink until there85// is no longer backpressure.86function TransformStreamReadableReadyPromise(transformStream) {87 assert(transformStream._backpressureChangePromise !== undefined,88 '_backpressureChangePromise should have been initialized');89 if (transformStream._backpressure === false) {90 return Promise.resolve();91 }92 assert(transformStream._backpressure === true, '_backpressure should have been initialized');93 return transformStream._backpressureChangePromise;94}95function TransformStreamSetBackpressure(transformStream, backpressure) {96 // console.log(`TransformStreamSetBackpressure(${backpressure})`);97 // Passes also when called during construction.98 assert(transformStream._backpressure !== backpressure,99 'TransformStreamSetBackpressure() should be called only when backpressure is changed');100 if (transformStream._backpressureChangePromise !== undefined) {101 // The fulfillment value is just for a sanity check.102 transformStream._backpressureChangePromise_resolve(backpressure);103 }104 transformStream._backpressureChangePromise = new Promise(resolve => {105 transformStream._backpressureChangePromise_resolve = resolve;106 });107 transformStream._backpressureChangePromise.then(resolution => {108 assert(resolution !== backpressure,109 '_backpressureChangePromise should be fulfilled only when backpressure is changed');110 });111 transformStream._backpressure = backpressure;112}113function TransformStreamDefaultTransform(chunk, transformStreamController) {114 const transformStream = transformStreamController._controlledTransformStream;115 TransformStreamEnqueueToReadable(transformStream, chunk);116 return Promise.resolve();117}118function TransformStreamTransform(transformStream, chunk) {119 // console.log('TransformStreamTransform()');120 assert(transformStream._errored === false);121 assert(transformStream._transforming === false);122 assert(transformStream._backpressure === false);123 transformStream._transforming = true;124 const transformer = transformStream._transformer;125 const controller = transformStream._transformStreamController;126 const transformPromise = PromiseInvokeOrPerformFallback(transformer, 'transform', [chunk, controller],127 TransformStreamDefaultTransform, [chunk, controller]);128 return transformPromise.then(129 () => {130 transformStream._transforming = false;131 return TransformStreamReadableReadyPromise(transformStream);132 },133 e => {134 TransformStreamErrorIfNeeded(transformStream, e);135 return Promise.reject(e);136 });137}138function IsTransformStreamDefaultController(x) {139 if (!typeIsObject(x)) {140 return false;141 }142 if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {143 return false;144 }145 return true;146}147function IsTransformStream(x) {148 if (!typeIsObject(x)) {149 return false;150 }151 if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {152 return false;153 }154 return true;155}156class TransformStreamSink {157 constructor(transformStream, startPromise) {158 this._transformStream = transformStream;159 this._startPromise = startPromise;160 }161 start(c) {162 const transformStream = this._transformStream;163 transformStream._writableController = c;164 return this._startPromise.then(() => TransformStreamReadableReadyPromise(transformStream));165 }166 write(chunk) {167 // console.log('TransformStreamSink.write()');168 const transformStream = this._transformStream;169 return TransformStreamTransform(transformStream, chunk);170 }171 abort() {172 const transformStream = this._transformStream;173 transformStream._writableDone = true;174 TransformStreamErrorInternal(transformStream, new TypeError('Writable side aborted'));175 }176 close() {177 // console.log('TransformStreamSink.close()');178 const transformStream = this._transformStream;179 assert(transformStream._transforming === false);180 transformStream._writableDone = true;181 const flushPromise = PromiseInvokeOrNoop(transformStream._transformer,182 'flush', [transformStream._transformStreamController]);183 // Return a promise that is fulfilled with undefined on success.184 return flushPromise.then(() => {185 if (transformStream._errored === true) {186 return Promise.reject(transformStream._storedError);187 }188 if (transformStream._readableClosed === false) {189 TransformStreamCloseReadableInternal(transformStream);190 }191 return Promise.resolve();192 }).catch(r => {193 TransformStreamErrorIfNeeded(transformStream, r);194 return Promise.reject(transformStream._storedError);195 });196 }197}198class TransformStreamSource {199 constructor(transformStream, startPromise) {200 this._transformStream = transformStream;201 this._startPromise = startPromise;202 }203 start(c) {204 const transformStream = this._transformStream;205 transformStream._readableController = c;206 return this._startPromise.then(() => {207 // Prevent the first pull() call until there is backpressure....
transform-stream-polyfill.js
Source:transform-stream-polyfill.js
...31 } catch (e) {32 // This happens when readableStrategy.size() throws.33 // The ReadableStream has already errored itself.34 transformStream._readableClosed = true;35 TransformStreamErrorIfNeeded(transformStream, e);36 throw transformStream._storedError;37 }38 const desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);39 const maybeBackpressure = desiredSize <= 0;40 if (maybeBackpressure === true && transformStream._backpressure === false) {41 // This allows pull() again. When desiredSize is 0, it's possible that a pull() will happen immediately (but42 // asynchronously) after this because of pending read()s and set _backpressure back to false.43 //44 // If pull() could be called from inside enqueue(), then this logic would be wrong. This cannot happen45 // because there is always a promise pending from start() or pull() when _backpressure is false.46 TransformStreamSetBackpressure(transformStream, true);47 }48}49function TransformStreamError(transformStream, e) {50 if (transformStream._errored === true) {51 throw new TypeError('TransformStream is already errored');52 }53 TransformStreamErrorInternal(transformStream, e);54}55// Abstract operations.56function TransformStreamCloseReadableInternal(transformStream) {57 ReadableStreamDefaultControllerClose(transformStream._readableController);58 transformStream._readableClosed = true;59}60function TransformStreamErrorIfNeeded(transformStream, e) {61 if (transformStream._errored === false) {62 TransformStreamErrorInternal(transformStream, e);63 }64}65function TransformStreamErrorInternal(transformStream, e) {66 transformStream._errored = true;67 transformStream._storedError = e;68 if (transformStream._writableDone === false) {69 WritableStreamDefaultControllerError(transformStream._writableController, e);70 }71 if (transformStream._readableClosed === false) {72 ReadableStreamDefaultControllerError(transformStream._readableController, e);73 }74}75// Used for preventing the next write() call on TransformStreamSink until there76// is no longer backpressure.77function TransformStreamReadableReadyPromise(transformStream) {78 if (transformStream._backpressure === false) {79 return Promise.resolve();80 }81 return transformStream._backpressureChangePromise;82}83function TransformStreamSetBackpressure(transformStream, backpressure) {84 // Passes also when called during construction.85 if (transformStream._backpressureChangePromise !== undefined) {86 // The fulfillment value is just for a sanity check.87 transformStream._backpressureChangePromise_resolve(backpressure);88 }89 transformStream._backpressureChangePromise = new Promise(resolve => {90 transformStream._backpressureChangePromise_resolve = resolve;91 });92 transformStream._backpressureChangePromise.then(resolution => {93 });94 transformStream._backpressure = backpressure;95}96function TransformStreamDefaultTransform(chunk, transformStreamController) {97 const transformStream = transformStreamController._controlledTransformStream;98 TransformStreamEnqueueToReadable(transformStream, chunk);99 return Promise.resolve();100}101function TransformStreamTransform(transformStream, chunk) {102 transformStream._transforming = true;103 const transformer = transformStream._transformer;104 const controller = transformStream._transformStreamController;105 const transformPromise = PromiseInvokeOrPerformFallback(transformer, 'transform', [chunk, controller],106 TransformStreamDefaultTransform, [chunk, controller]);107 return transformPromise.then(108 () => {109 transformStream._transforming = false;110 return TransformStreamReadableReadyPromise(transformStream);111 },112 e => {113 TransformStreamErrorIfNeeded(transformStream, e);114 return Promise.reject(e);115 });116}117function IsTransformStreamDefaultController(x) {118 if (!typeIsObject(x)) {119 return false;120 }121 if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {122 return false;123 }124 return true;125}126function IsTransformStream(x) {127 if (!typeIsObject(x)) {128 return false;129 }130 if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {131 return false;132 }133 return true;134}135class TransformStreamSink {136 constructor(transformStream, startPromise) {137 this._transformStream = transformStream;138 this._startPromise = startPromise;139 }140 start(c) {141 const transformStream = this._transformStream;142 transformStream._writableController = c;143 return this._startPromise.then(() => TransformStreamReadableReadyPromise(transformStream));144 }145 write(chunk) {146 const transformStream = this._transformStream;147 return TransformStreamTransform(transformStream, chunk);148 }149 abort() {150 const transformStream = this._transformStream;151 transformStream._writableDone = true;152 TransformStreamErrorInternal(transformStream, new TypeError('Writable side aborted'));153 }154 close() {155 const transformStream = this._transformStream;156 transformStream._writableDone = true;157 const flushPromise = PromiseInvokeOrNoop(transformStream._transformer,158 'flush', [transformStream._transformStreamController]);159 // Return a promise that is fulfilled with undefined on success.160 return flushPromise.then(() => {161 if (transformStream._errored === true) {162 return Promise.reject(transformStream._storedError);163 }164 if (transformStream._readableClosed === false) {165 TransformStreamCloseReadableInternal(transformStream);166 }167 return Promise.resolve();168 }).catch(r => {169 TransformStreamErrorIfNeeded(transformStream, r);170 return Promise.reject(transformStream._storedError);171 });172 }173}174class TransformStreamSource {175 constructor(transformStream, startPromise) {176 this._transformStream = transformStream;177 this._startPromise = startPromise;178 }179 start(c) {180 const transformStream = this._transformStream;181 transformStream._readableController = c;182 return this._startPromise.then(() => {183 // Prevent the first pull() call until there is backpressure....
Using AI Code Generation
1var ts = new TransformStream();2var writer = ts.writable.getWriter();3writer.write("a");4writer.write("b");5writer.write("c");6writer.write("d");7writer.write("e");8writer.write("f");9writer.write("g");10writer.write("h");11writer.write("i");12writer.write("j");13writer.write("k");14writer.write("l");15writer.write("m");16writer.write("n");17writer.write("o");18writer.write("p");19writer.write("q");20writer.write("r");21writer.write("s");22writer.write("t");23writer.write("u");24writer.write("v");25writer.write("w");26writer.write("x");27writer.write("y");28writer.write("z");29writer.write("A");30writer.write("B");31writer.write("C");32writer.write("D");33writer.write("E");34writer.write("F");35writer.write("G");36writer.write("H");37writer.write("I");38writer.write("J");39writer.write("K");40writer.write("L");41writer.write("M");42writer.write("N");43writer.write("O");44writer.write("P");45writer.write("Q");46writer.write("R");47writer.write("S");48writer.write("T");49writer.write("U");50writer.write("V");51writer.write("W");52writer.write("X");53writer.write("Y");54writer.write("Z");55writer.write("0");56writer.write("1");57writer.write("2");58writer.write("3");59writer.write("4");60writer.write("5");61writer.write("6");62writer.write("7");63writer.write("8");64writer.write("9");65writer.write("!");66writer.write("@");67writer.write("#");68writer.write("$");69writer.write("%");70writer.write("^");71writer.write("&");72writer.write("*");73writer.write("(");74writer.write(")");75writer.write("-");76writer.write("_");77writer.write("+");78writer.write("=");79writer.write("`");80writer.write("~");81writer.write("'");82writer.write('"');83writer.write(";");84writer.write(":");85writer.write("/");86writer.write("?");87writer.write(">");88writer.write("<");89writer.write(",");90writer.write(".");91writer.write("[");92writer.write("]");93writer.write("{");94writer.write("}");95writer.write("\\");96writer.write("|");97writer.write(" ");98writer.close();99var reader = ts.readable.getReader();100reader.read().then(function(result) {101 assert_equals(result.value, "a");102 return reader.read();103}).then(function(result) {104 assert_equals(result.value
Using AI Code Generation
1import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';2import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';3import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';4import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';5import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';6import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';7import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';8import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';9import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';10import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';11import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';12import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';13import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';14import { TransformStreamErrorIfNeeded } from '/streams/resources/transform-stream-error-if-needed.js';15import { TransformStreamErrorIfNeeded } from
Using AI Code Generation
1var t = new TransformStream();2var writer = t.writable.getWriter();3var reader = t.readable.getReader();4writer.write('a');5writer.close();6reader.read().then(function(result) {7 assert_equals(result.value, 'a');8 assert_equals(result.done, false);9 return reader.read();10}).then(function(result) {11 assert_equals(result.value, undefined);12 assert_equals(result.done, true);13 t.readable.cancel();14 t.writable.abort();15 t.readable.getReader().closed.then(function() {16 done();17 });18}).catch(unreached_rejection(t));19var t = new TransformStream();
Using AI Code Generation
1var t = new TransformStream();2var writer = t.writable.getWriter();3writer.write("a");4writer.write("b");5writer.close();6writer.write("c");7var reader = t.readable.getReader();8reader.read().then(function(result) {9 console.log(result.value);10 return reader.read();11}).then(function(result) {12 console.log(result.value);13 return reader.read();14}).then(function(result) {15 console.log(result.done);16});
Using AI Code Generation
1const { TransformStream } = require("stream/web");2const ts = new TransformStream({3 transform(chunk, controller) {4 controller.enqueue(chunk);5 },6});7ts.readable.pipeTo(ts.writable);8ts.readable.cancel();
Using AI Code Generation
1importScripts("TransformStreamErrorIfNeeded.js");2var t = new TransformStream();3t.writable.write(1);4t.writable.write(2);5t.writable.write(3);6t.writable.write(4);7t.writable.write(5);8t.writable.write(6);9t.writable.write(7);10t.writable.write(8);11t.writable.write(9);12t.writable.write(10);13t.writable.write(11);14t.writable.write(12);15t.writable.write(13);16t.writable.write(14);17t.writable.write(15);18t.writable.write(16);19t.writable.write(17);20t.writable.write(18);21t.writable.write(19);22t.writable.write(20);23t.writable.write(21);24t.writable.write(22);25t.writable.write(23);26t.writable.write(24);27t.writable.write(25);28t.writable.write(26);29t.writable.write(27);30t.writable.write(28);31t.writable.write(29);32t.writable.write(30);33t.writable.write(31);34t.writable.write(32);35t.writable.write(33);36t.writable.write(34);37t.writable.write(35);38t.writable.write(36);39t.writable.write(37);40t.writable.write(38);41t.writable.write(39);42t.writable.write(40);43t.writable.write(41);44t.writable.write(42);45t.writable.write(43);46t.writable.write(44);47t.writable.write(45);48t.writable.write(46);49t.writable.write(47);50t.writable.write(48);51t.writable.write(49);52t.writable.write(50);53t.writable.write(51);54t.writable.write(52);55t.writable.write(53);56t.writable.write(54);57t.writable.write(55);58t.writable.write(56);59t.writable.write(57);60t.writable.write(58);61t.writable.write(59);62t.writable.write(60);63t.writable.write(61);64t.writable.write(62);65t.writable.write(63);66t.writable.write(64);67t.writable.write(65);68t.writable.write(66);69t.writable.write(67);70t.writable.write(68);71t.writable.write(69
Using AI Code Generation
1import {TransformStreamErrorIfNeeded} from "./wpt/resources/testharness.js";2import {TransformStream} from "./wpt/resources/testharness.js";3import {ReadableStream} from "./wpt/resources/testharness.js";4import {WritableStream} from "./wpt/resources/testharness.js";5const {test} = await import("./wpt/resources/testharness.js");6const {promise_rejects} = await import("./wpt/resources/testharness.js");7const {promise_rejects_exactly} = await import("./wpt/resources/testharness.js");8const {promise_rejects_js} = await import("./wpt/resources/testharness.js");9const {promise_rejects_dom} = await import("./wpt/resources/testharness.js");10const {assert_array_equals} = await import("./wpt/resources/testharness.js");11const {assert_equals} = await import("./wpt/resources/testharness.js");12const {assert_true} = await import("./wpt/resources/testharness.js");13const {assert_false} = await import("./wpt/resources/testharness.js");14const {assert_throws} = await import("./wpt/resources/testharness.js");15const {assert_throws_js} = await import("./wpt/resources/testharness.js");16const {assert_throws_exactly} = await import("./wpt/resources/testharness.js");17const {assert_throws_dom} = await import("./wpt/resources/testharness.js");18const {assert_throws_exactly_js} = await import("./wpt/resources/testharness.js");19const {assert_throws_exactly_dom} = await import("./wpt/resources/testharness.js");20const {assert_throws_exactly_type} = await import("./wpt/resources/testharness.js");21const {assert_throws_type} = await import("./wpt/resources/testharness.js");22const {assert_throws_type_dom} = await import("./wpt/resources/testharness.js");23const {assert_throws_type_js} = await import("./wpt/resources/testharness.js");24const {assert_throws_code} = await import("./wpt/resources/testharness.js");25const {assert_throws_code_js} = await import("./wpt/resources/testharness.js");26const {assert_throws_code_dom} = await import("./wpt/resources/testharness.js");27const {assert_throws_code_exactly} =
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