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How to use readableChunks method in wpt
Best JavaScript code snippet using wpt
general.any.js
Source:general.any.js 
1// META: global=window,worker,jsshell2// META: script=../resources/test-utils.js3// META: script=../resources/rs-utils.js4'use strict';5test(() => {6 new TransformStream({ transform() { } });7}, 'TransformStream can be constructed with a transform function');8test(() => {9 new TransformStream();10 new TransformStream({});11}, 'TransformStream can be constructed with no transform function');12test(() => {13 const ts = new TransformStream({ transform() { } });14 const writer = ts.writable.getWriter();15 assert_equals(writer.desiredSize, 1, 'writer.desiredSize should be 1');16}, 'TransformStream writable starts in the writable state');17promise_test(() => {18 const ts = new TransformStream();19 const writer = ts.writable.getWriter();20 writer.write('a');21 assert_equals(writer.desiredSize, 0, 'writer.desiredSize should be 0 after write()');22 return ts.readable.getReader().read().then(result => {23 assert_equals(result.value, 'a',24 'result from reading the readable is the same as was written to writable');25 assert_false(result.done, 'stream should not be done');26 return delay(0).then(() => assert_equals(writer.desiredSize, 1, 'desiredSize should be 1 again'));27 });28}, 'Identity TransformStream: can read from readable what is put into writable');29promise_test(() => {30 let c;31 const ts = new TransformStream({32 start(controller) {33 c = controller;34 },35 transform(chunk) {36 c.enqueue(chunk.toUpperCase());37 }38 });39 const writer = ts.writable.getWriter();40 writer.write('a');41 return ts.readable.getReader().read().then(result => {42 assert_equals(result.value, 'A',43 'result from reading the readable is the transformation of what was written to writable');44 assert_false(result.done, 'stream should not be done');45 });46}, 'Uppercaser sync TransformStream: can read from readable transformed version of what is put into writable');47promise_test(() => {48 let c;49 const ts = new TransformStream({50 start(controller) {51 c = controller;52 },53 transform(chunk) {54 c.enqueue(chunk.toUpperCase());55 c.enqueue(chunk.toUpperCase());56 }57 });58 const writer = ts.writable.getWriter();59 writer.write('a');60 const reader = ts.readable.getReader();61 return reader.read().then(result1 => {62 assert_equals(result1.value, 'A',63 'the first chunk read is the transformation of the single chunk written');64 assert_false(result1.done, 'stream should not be done');65 return reader.read().then(result2 => {66 assert_equals(result2.value, 'A',67 'the second chunk read is also the transformation of the single chunk written');68 assert_false(result2.done, 'stream should not be done');69 });70 });71}, 'Uppercaser-doubler sync TransformStream: can read both chunks put into the readable');72promise_test(() => {73 let c;74 const ts = new TransformStream({75 start(controller) {76 c = controller;77 },78 transform(chunk) {79 return delay(0).then(() => c.enqueue(chunk.toUpperCase()));80 }81 });82 const writer = ts.writable.getWriter();83 writer.write('a');84 return ts.readable.getReader().read().then(result => {85 assert_equals(result.value, 'A',86 'result from reading the readable is the transformation of what was written to writable');87 assert_false(result.done, 'stream should not be done');88 });89}, 'Uppercaser async TransformStream: can read from readable transformed version of what is put into writable');90promise_test(() => {91 let doSecondEnqueue;92 let returnFromTransform;93 const ts = new TransformStream({94 transform(chunk, controller) {95 delay(0).then(() => controller.enqueue(chunk.toUpperCase()));96 doSecondEnqueue = () => controller.enqueue(chunk.toUpperCase());97 return new Promise(resolve => {98 returnFromTransform = resolve;99 });100 }101 });102 const reader = ts.readable.getReader();103 const writer = ts.writable.getWriter();104 writer.write('a');105 return reader.read().then(result1 => {106 assert_equals(result1.value, 'A',107 'the first chunk read is the transformation of the single chunk written');108 assert_false(result1.done, 'stream should not be done');109 doSecondEnqueue();110 return reader.read().then(result2 => {111 assert_equals(result2.value, 'A',112 'the second chunk read is also the transformation of the single chunk written');113 assert_false(result2.done, 'stream should not be done');114 returnFromTransform();115 });116 });117}, 'Uppercaser-doubler async TransformStream: can read both chunks put into the readable');118promise_test(() => {119 const ts = new TransformStream({ transform() { } });120 const writer = ts.writable.getWriter();121 writer.close();122 return Promise.all([writer.closed, ts.readable.getReader().closed]);123}, 'TransformStream: by default, closing the writable closes the readable (when there are no queued writes)');124promise_test(() => {125 let transformResolve;126 const transformPromise = new Promise(resolve => {127 transformResolve = resolve;128 });129 const ts = new TransformStream({130 transform() {131 return transformPromise;132 }133 }, undefined, { highWaterMark: 1 });134 const writer = ts.writable.getWriter();135 writer.write('a');136 writer.close();137 let rsClosed = false;138 ts.readable.getReader().closed.then(() => {139 rsClosed = true;140 });141 return delay(0).then(() => {142 assert_equals(rsClosed, false, 'readable is not closed after a tick');143 transformResolve();144 return writer.closed.then(() => {145 // TODO: Is this expectation correct?146 assert_equals(rsClosed, true, 'readable is closed at that point');147 });148 });149}, 'TransformStream: by default, closing the writable waits for transforms to finish before closing both');150promise_test(() => {151 let c;152 const ts = new TransformStream({153 start(controller) {154 c = controller;155 },156 transform() {157 c.enqueue('x');158 c.enqueue('y');159 return delay(0);160 }161 });162 const writer = ts.writable.getWriter();163 writer.write('a');164 writer.close();165 const readableChunks = readableStreamToArray(ts.readable);166 return writer.closed.then(() => {167 return readableChunks.then(chunks => {168 assert_array_equals(chunks, ['x', 'y'], 'both enqueued chunks can be read from the readable');169 });170 });171}, 'TransformStream: by default, closing the writable closes the readable after sync enqueues and async done');172promise_test(() => {173 let c;174 const ts = new TransformStream({175 start(controller) {176 c = controller;177 },178 transform() {179 return delay(0)180 .then(() => c.enqueue('x'))181 .then(() => c.enqueue('y'))182 .then(() => delay(0));183 }184 });185 const writer = ts.writable.getWriter();186 writer.write('a');187 writer.close();188 const readableChunks = readableStreamToArray(ts.readable);189 return writer.closed.then(() => {190 return readableChunks.then(chunks => {191 assert_array_equals(chunks, ['x', 'y'], 'both enqueued chunks can be read from the readable');192 });193 });194}, 'TransformStream: by default, closing the writable closes the readable after async enqueues and async done');195promise_test(() => {196 let c;197 const ts = new TransformStream({198 suffix: '-suffix',199 start(controller) {200 c = controller;201 c.enqueue('start' + this.suffix);202 },203 transform(chunk) {204 c.enqueue(chunk + this.suffix);205 },206 flush() {207 c.enqueue('flushed' + this.suffix);208 }209 });210 const writer = ts.writable.getWriter();211 writer.write('a');212 writer.close();213 const readableChunks = readableStreamToArray(ts.readable);214 return writer.closed.then(() => {215 return readableChunks.then(chunks => {216 assert_array_equals(chunks, ['start-suffix', 'a-suffix', 'flushed-suffix'], 'all enqueued chunks have suffixes');217 });218 });219}, 'Transform stream should call transformer methods as methods');220promise_test(() => {221 function functionWithOverloads() {}222 functionWithOverloads.apply = () => assert_unreached('apply() should not be called');223 functionWithOverloads.call = () => assert_unreached('call() should not be called');224 const ts = new TransformStream({225 start: functionWithOverloads,226 transform: functionWithOverloads,227 flush: functionWithOverloads228 });229 const writer = ts.writable.getWriter();230 writer.write('a');231 writer.close();232 return readableStreamToArray(ts.readable);233}, 'methods should not not have .apply() or .call() called');234promise_test(t => {235 let startCalled = false;236 let startDone = false;237 let transformDone = false;238 let flushDone = false;239 const ts = new TransformStream({240 start() {241 startCalled = true;242 return flushAsyncEvents().then(() => {243 startDone = true;244 });245 },246 transform() {247 return t.step(() => {248 assert_true(startDone, 'transform() should not be called until the promise returned from start() has resolved');249 return flushAsyncEvents().then(() => {250 transformDone = true;251 });252 });253 },254 flush() {255 return t.step(() => {256 assert_true(transformDone,257 'flush() should not be called until the promise returned from transform() has resolved');258 return flushAsyncEvents().then(() => {259 flushDone = true;260 });261 });262 }263 }, undefined, { highWaterMark: 1 });264 assert_true(startCalled, 'start() should be called synchronously');265 const writer = ts.writable.getWriter();266 const writePromise = writer.write('a');267 return writer.close().then(() => {268 assert_true(flushDone, 'promise returned from flush() should have resolved');269 return writePromise;270 });271}, 'TransformStream start, transform, and flush should be strictly ordered');272promise_test(() => {273 let transformCalled = false;274 const ts = new TransformStream({275 transform() {276 transformCalled = true;277 }278 }, undefined, { highWaterMark: Infinity });279 // transform() is only called synchronously when there is no backpressure and all microtasks have run.280 return delay(0).then(() => {281 const writePromise = ts.writable.getWriter().write();282 assert_true(transformCalled, 'transform() should have been called');283 return writePromise;284 });285}, 'it should be possible to call transform() synchronously');286promise_test(() => {287 const ts = new TransformStream({}, undefined, { highWaterMark: 0 });288 const writer = ts.writable.getWriter();289 writer.close();290 return Promise.all([writer.closed, ts.readable.getReader().closed]);291}, 'closing the writable should close the readable when there are no queued chunks, even with backpressure');292test(() => {293 new TransformStream({294 start(controller) {295 controller.terminate();296 assert_throws_js(TypeError, () => controller.enqueue(), 'enqueue should throw');297 }298 });299}, 'enqueue() should throw after controller.terminate()');300promise_test(() => {301 let controller;302 const ts = new TransformStream({303 start(c) {304 controller = c;305 }306 });307 const cancelPromise = ts.readable.cancel();308 assert_throws_js(TypeError, () => controller.enqueue(), 'enqueue should throw');309 return cancelPromise;310}, 'enqueue() should throw after readable.cancel()');311test(() => {312 new TransformStream({313 start(controller) {314 controller.terminate();315 controller.terminate();316 }317 });318}, 'controller.terminate() should do nothing the second time it is called');319promise_test(t => {320 let controller;321 const ts = new TransformStream({322 start(c) {323 controller = c;324 }325 });326 const cancelReason = { name: 'cancelReason' };327 const cancelPromise = ts.readable.cancel(cancelReason);328 controller.terminate();329 return Promise.all([330 cancelPromise,331 promise_rejects_exactly(t, cancelReason, ts.writable.getWriter().closed, 'closed should reject with cancelReason')332 ]);333}, 'terminate() should do nothing after readable.cancel()');334promise_test(() => {335 let calls = 0;336 new TransformStream({337 start() {338 ++calls;339 }340 });341 return flushAsyncEvents().then(() => {342 assert_equals(calls, 1, 'start() should have been called exactly once');343 });344}, 'start() should not be called twice');345test(() => {346 assert_throws_js(RangeError, () => new TransformStream({ readableType: 'bytes' }), 'constructor should throw');347}, 'specifying a defined readableType should throw');348test(() => {349 assert_throws_js(RangeError, () => new TransformStream({ writableType: 'bytes' }), 'constructor should throw');350}, 'specifying a defined writableType should throw');351test(() => {352 class Subclass extends TransformStream {353 extraFunction() {354 return true;355 }356 }357 assert_equals(358 Object.getPrototypeOf(Subclass.prototype), TransformStream.prototype,359 'Subclass.prototype\'s prototype should be TransformStream.prototype');360 assert_equals(Object.getPrototypeOf(Subclass), TransformStream,361 'Subclass\'s prototype should be TransformStream');362 const sub = new Subclass();363 assert_true(sub instanceof TransformStream,364 'Subclass object should be an instance of TransformStream');365 assert_true(sub instanceof Subclass,366 'Subclass object should be an instance of Subclass');367 const readableGetter = Object.getOwnPropertyDescriptor(368 TransformStream.prototype, 'readable').get;369 assert_equals(readableGetter.call(sub), sub.readable,370 'Subclass object should pass brand check');371 assert_true(sub.extraFunction(),372 'extraFunction() should be present on Subclass object');...
Using AI Code Generation
1const { ReadableStream, WritableStream } = require('web-streams-polyfill/ponyfill');2const { readableChunks } = require('web-streams-polyfill');3const rs = new ReadableStream({4 start(controller) {5 controller.enqueue('a');6 controller.enqueue('b');7 controller.enqueue('c');8 controller.close();9 }10});11const chunks = readableChunks(rs);12chunks.then((chunks) => {13 console.log(chunks);14});15### readableChunks(stream)16### readableStreamToArray(stream)17### writableStreamFromArray(stream)18### readableStreamToString(stream)19### writableStreamFromString(stream)20### readableStreamToBuffer(stream)21### writableStreamFromBuffer(stream)
Using AI Code Generation
1const { ReadableStream, WritableStream } = require('web-streams-polyfill/ponyfill');2const { readableChunks } = require('wpt-streams');3const rs = new ReadableStream({4 start(controller) {5 controller.enqueue('a');6 controller.enqueue('b');7 controller.enqueue('c');8 controller.close();9 }10});11const chunks = readableChunks(rs);12const { ReadableStream, WritableStream } = require('web-streams-polyfill/ponyfill');13const { readableStreamToAsyncIterator } = require('wpt-streams');14const rs = new ReadableStream({15 start(controller) {16 controller.enqueue('a');17 controller.enqueue('b');18 controller.enqueue('c');19 controller.close();20 }21});22const reader = readableStreamToAsyncIterator(rs);23const chunks = [];24for await (const chunk of reader) {25 chunks.push(chunk);26}27const { ReadableStream, WritableStream } = require('web-streams-polyfill/ponyfill');28const { readableStreamToArrayBuffer } = require('wpt-streams');29const rs = new ReadableStream({30 start(controller) {31 controller.enqueue(new Uint8Array([0x00, 0x01, 0x02]).buffer);32 controller.enqueue(new Uint8Array([0x03, 0x04, 0x05]).buffer);33 controller.close();34 }35});36const ab = await readableStreamToArrayBuffer(rs);37const { ReadableStream, WritableStream } = require('web-streams-polyfill/ponyfill');38const { readableStreamToBlob } = require('wpt-streams');39const rs = new ReadableStream({40 start(controller) {41 controller.enqueue(new Uint8Array([0x00, 0
Using AI Code Generation
1var readableChunks = require('wpt-streams').readableChunks;2var readable = new ReadableStream({3 start: function(controller) {4 controller.enqueue('a');5 controller.enqueue('b');6 controller.enqueue('c');7 controller.close();8 }9});10readableChunks(readable).then(function(chunks) {11});
Using AI Code Generation
1const { ReadableStream } = require('wpt-streams');2const { ReadableStreamDefaultReader } = require('wpt-streams/readable-stream');3const { ReadableByteStreamController } = require('wpt-streams/readable-byte-stream-controller');4const { ReadableStreamBYOBReader } = require('wpt-streams/readable-stream-byob-reader');5const { WritableStream } = require('wpt-streams/writable-stream');6const { WritableStreamDefaultWriter } = require('wpt-streams/writable-stream-default-writer');7const { WritableStreamDefaultController } = require('wpt-streams/writable-stream-default-controller');8const { TransformStream } = require('wpt-streams/transform-stream');9const { TransformStreamDefaultController } = require('wpt-streams/transform-stream-default-controller');10const rs = new ReadableStream({11 start(c) {12 c.enqueue('a');13 c.enqueue('b');14 c.enqueue('c');15 }16});17const reader = rs.getReader();18const result = reader.readableChunks();19console.log(result);20#### readableChunks()21#### readableChunks()22#### readableChunks()23#### readableChunks()24#### writableChunks()25#### writableChunks()26#### readableChunks()27#### writableChunks()
Using AI Code Generation
1var wpt = require('wpt-streams');2var rs = new wpt.ReadableStream({3 start: function(controller) {4 controller.enqueue('a');5 controller.enqueue('b');6 controller.enqueue('c');7 controller.close();8 }9});10rs.readableChunks().then(function(chunks) {11 console.log(chunks);12});13var wpt = require('wpt-streams');14var rs = wpt.readableStreamFromChunks(['a', 'b', 'c']);15rs.getReader().read().then(function(result) {16 console.log(result.value);17});18var wpt = require('wpt-streams');19var rs = wpt.readableStreamFromAsyncIterator({20 async next() {21 return { value: 'a', done: false };22 }23});24rs.getReader().read().then(function(result) {25 console.log(result.value);26});27var wpt = require('wpt-streams');28var rs = new wpt.ReadableStream({29 start: function(controller) {30 controller.enqueue('a');31 controller.enqueue('b');32 controller.enqueue('c');33 controller.close();34 }35});36var rs2 = wpt.readableStreamFromReadableStream(rs);37rs2.getReader().read().then(function(result) {38 console.log(result.value);39});40var wpt = require('wpt-streams');41var rs = new wpt.ReadableByteStream({42 start: function(controller) {43 controller.enqueue(new Uint8Array([1, 2, 3]));44 controller.close();45 }46});47var rs2 = wpt.readableStreamFromReadableByteStream(rs);48rs2.getReader().read().then(function(result) {49 console.log(result.value);50});
Using AI Code Generation
1var fs = require('fs');2var WritableStream = require('wpt-streams').WritableStream;3var readableChunks = require('wpt-streams').readableChunks;4var ws = new WritableStream({5 write: function(chunk) {6 console.log("write called");7 console.log(chunk);8 }9});10var rs = fs.createReadStream('test.txt');11readableChunks(rs, ws);
Using AI Code Generation
1const { ReadableStream } = require('stream/web');2const fs = require('fs');3const stream = new ReadableStream({4 start(controller) {5 function push() {6 const { done, value } = reader.read();7 if (done) {8 return controller.close();9 }10 controller.enqueue(value);11 console.log(value);12 return push();13 };14 const reader = stream.getReader();15 return push();16 }17});18fs.writeFile('test.txt', '', function (err) {19 if (err) throw err;20 console.log('File is created successfully.');21});22stream.readableChunks().then((chunks) => {23 fs.appendFile('test.txt', chunks, function (err) {24 if (err) throw err;25 console.log('File is updated successfully.');26 });27});28const { ReadableStream, ReadableStreamBYOBReader } = require('stream/web');29const fs = require('fs');30const stream = new ReadableStream({31 start(controller) {32 function push() {33 const { done, value } = reader.read();34 if (done) {35 return controller.close();36 }37 controller.enqueue(value);38 console.log(value);39 return push();40 };
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