How to use writtenBytes method in wpt

Best JavaScript code snippet using wpt

ReactServerStreamConfigNode.js

Source:ReactServerStreamConfigNode.js Github

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1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 * @flow8 */9import type {Writable} from 'stream';10import {TextEncoder} from 'util';11type MightBeFlushable = {12 flush?: () => void,13 ...14};15export type Destination = Writable & MightBeFlushable;16export type PrecomputedChunk = Uint8Array;17export type Chunk = string;18export function scheduleWork(callback: () => void) {19 setImmediate(callback);20}21export function flushBuffered(destination: Destination) {22 // If we don't have any more data to send right now.23 // Flush whatever is in the buffer to the wire.24 if (typeof destination.flush === 'function') {25 // By convention the Zlib streams provide a flush function for this purpose.26 // For Express, compression middleware adds this method.27 destination.flush();28 }29}30const VIEW_SIZE = 2048;31let currentView = null;32let writtenBytes = 0;33let destinationHasCapacity = true;34export function beginWriting(destination: Destination) {35 currentView = new Uint8Array(VIEW_SIZE);36 writtenBytes = 0;37 destinationHasCapacity = true;38}39function writeStringChunk(destination: Destination, stringChunk: string) {40 if (stringChunk.length === 0) {41 return;42 }43 // maximum possible view needed to encode entire string44 if (stringChunk.length * 3 > VIEW_SIZE) {45 if (writtenBytes > 0) {46 writeToDestination(47 destination,48 ((currentView: any): Uint8Array).subarray(0, writtenBytes),49 );50 currentView = new Uint8Array(VIEW_SIZE);51 writtenBytes = 0;52 }53 writeToDestination(destination, textEncoder.encode(stringChunk));54 return;55 }56 let target: Uint8Array = (currentView: any);57 if (writtenBytes > 0) {58 target = ((currentView: any): Uint8Array).subarray(writtenBytes);59 }60 const {read, written} = textEncoder.encodeInto(stringChunk, target);61 writtenBytes += written;62 if (read < stringChunk.length) {63 writeToDestination(destination, (currentView: any));64 currentView = new Uint8Array(VIEW_SIZE);65 writtenBytes = textEncoder.encodeInto(stringChunk.slice(read), currentView)66 .written;67 }68 if (writtenBytes === VIEW_SIZE) {69 writeToDestination(destination, (currentView: any));70 currentView = new Uint8Array(VIEW_SIZE);71 writtenBytes = 0;72 }73}74function writeViewChunk(destination: Destination, chunk: PrecomputedChunk) {75 if (chunk.byteLength === 0) {76 return;77 }78 if (chunk.byteLength > VIEW_SIZE) {79 // this chunk may overflow a single view which implies it was not80 // one that is cached by the streaming renderer. We will enqueu81 // it directly and expect it is not re-used82 if (writtenBytes > 0) {83 writeToDestination(84 destination,85 ((currentView: any): Uint8Array).subarray(0, writtenBytes),86 );87 currentView = new Uint8Array(VIEW_SIZE);88 writtenBytes = 0;89 }90 writeToDestination(destination, chunk);91 return;92 }93 let bytesToWrite = chunk;94 const allowableBytes = ((currentView: any): Uint8Array).length - writtenBytes;95 if (allowableBytes < bytesToWrite.byteLength) {96 // this chunk would overflow the current view. We enqueue a full view97 // and start a new view with the remaining chunk98 if (allowableBytes === 0) {99 // the current view is already full, send it100 writeToDestination(destination, (currentView: any));101 } else {102 // fill up the current view and apply the remaining chunk bytes103 // to a new view.104 ((currentView: any): Uint8Array).set(105 bytesToWrite.subarray(0, allowableBytes),106 writtenBytes,107 );108 writtenBytes += allowableBytes;109 writeToDestination(destination, (currentView: any));110 bytesToWrite = bytesToWrite.subarray(allowableBytes);111 }112 currentView = new Uint8Array(VIEW_SIZE);113 writtenBytes = 0;114 }115 ((currentView: any): Uint8Array).set(bytesToWrite, writtenBytes);116 writtenBytes += bytesToWrite.byteLength;117 if (writtenBytes === VIEW_SIZE) {118 writeToDestination(destination, (currentView: any));119 currentView = new Uint8Array(VIEW_SIZE);120 writtenBytes = 0;121 }122}123export function writeChunk(124 destination: Destination,125 chunk: PrecomputedChunk | Chunk,126): void {127 if (typeof chunk === 'string') {128 writeStringChunk(destination, chunk);129 } else {130 writeViewChunk(destination, ((chunk: any): PrecomputedChunk));131 }132}133function writeToDestination(destination: Destination, view: Uint8Array) {134 const currentHasCapacity = destination.write(view);135 destinationHasCapacity = destinationHasCapacity && currentHasCapacity;136}137export function writeChunkAndReturn(138 destination: Destination,139 chunk: PrecomputedChunk | Chunk,140): boolean {141 writeChunk(destination, chunk);142 return destinationHasCapacity;143}144export function completeWriting(destination: Destination) {145 if (currentView && writtenBytes > 0) {146 destination.write(currentView.subarray(0, writtenBytes));147 }148 currentView = null;149 writtenBytes = 0;150 destinationHasCapacity = true;151}152export function close(destination: Destination) {153 destination.end();154}155const textEncoder = new TextEncoder();156export function stringToChunk(content: string): Chunk {157 return content;158}159export function stringToPrecomputedChunk(content: string): PrecomputedChunk {160 return textEncoder.encode(content);161}162export function closeWithError(destination: Destination, error: mixed): void {163 // $FlowFixMe: This is an Error object or the destination accepts other types.164 destination.destroy(error);...

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ReactServerStreamConfigBrowser.js

Source:ReactServerStreamConfigBrowser.js Github

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1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 * @flow8 */9export type Destination = ReadableStreamController;10export type PrecomputedChunk = Uint8Array;11export type Chunk = Uint8Array;12export function scheduleWork(callback: () => void) {13 callback();14}15export function flushBuffered(destination: Destination) {16 // WHATWG Streams do not yet have a way to flush the underlying17 // transform streams. https://github.com/whatwg/streams/issues/96018}19const VIEW_SIZE = 512;20let currentView = null;21let writtenBytes = 0;22export function beginWriting(destination: Destination) {23 currentView = new Uint8Array(VIEW_SIZE);24 writtenBytes = 0;25}26export function writeChunk(27 destination: Destination,28 chunk: PrecomputedChunk | Chunk,29): void {30 if (chunk.length === 0) {31 return;32 }33 if (chunk.length > VIEW_SIZE) {34 // this chunk may overflow a single view which implies it was not35 // one that is cached by the streaming renderer. We will enqueu36 // it directly and expect it is not re-used37 if (writtenBytes > 0) {38 destination.enqueue(39 new Uint8Array(40 ((currentView: any): Uint8Array).buffer,41 0,42 writtenBytes,43 ),44 );45 currentView = new Uint8Array(VIEW_SIZE);46 writtenBytes = 0;47 }48 destination.enqueue(chunk);49 return;50 }51 let bytesToWrite = chunk;52 const allowableBytes = ((currentView: any): Uint8Array).length - writtenBytes;53 if (allowableBytes < bytesToWrite.length) {54 // this chunk would overflow the current view. We enqueue a full view55 // and start a new view with the remaining chunk56 if (allowableBytes === 0) {57 // the current view is already full, send it58 destination.enqueue(currentView);59 } else {60 // fill up the current view and apply the remaining chunk bytes61 // to a new view.62 ((currentView: any): Uint8Array).set(63 bytesToWrite.subarray(0, allowableBytes),64 writtenBytes,65 );66 // writtenBytes += allowableBytes; // this can be skipped because we are going to immediately reset the view67 destination.enqueue(currentView);68 bytesToWrite = bytesToWrite.subarray(allowableBytes);69 }70 currentView = new Uint8Array(VIEW_SIZE);71 writtenBytes = 0;72 }73 ((currentView: any): Uint8Array).set(bytesToWrite, writtenBytes);74 writtenBytes += bytesToWrite.length;75}76export function writeChunkAndReturn(77 destination: Destination,78 chunk: PrecomputedChunk | Chunk,79): boolean {80 writeChunk(destination, chunk);81 // in web streams there is no backpressure so we can alwas write more82 return true;83}84export function completeWriting(destination: Destination) {85 if (currentView && writtenBytes > 0) {86 destination.enqueue(new Uint8Array(currentView.buffer, 0, writtenBytes));87 currentView = null;88 writtenBytes = 0;89 }90}91export function close(destination: Destination) {92 destination.close();93}94const textEncoder = new TextEncoder();95export function stringToChunk(content: string): Chunk {96 return textEncoder.encode(content);97}98export function stringToPrecomputedChunk(content: string): PrecomputedChunk {99 return textEncoder.encode(content);100}101export function closeWithError(destination: Destination, error: mixed): void {102 if (typeof destination.error === 'function') {103 // $FlowFixMe: This is an Error object or the destination accepts other types.104 destination.error(error);105 } else {106 // Earlier implementations doesn't support this method. In that environment you're107 // supposed to throw from a promise returned but we don't return a promise in our108 // approach. We could fork this implementation but this is environment is an edge109 // case to begin with. It's even less common to run this in an older environment.110 // Even then, this is not where errors are supposed to happen and they get reported111 // to a global callback in addition to this anyway. So it's fine just to close this.112 destination.close();113 }...

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Using AI Code Generation

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1var wpt = require('webpagetest');2var test = wpt('www.webpagetest.org');3 if (err) return console.error(err);4 console.log(data);5 test.getTestStatus(data.data.testId, function(err, data) {6 if (err) return console.error(err);7 console.log(data);8 });9});

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Using AI Code Generation

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1var wpt = require('webpagetest');2var wpt = new WebPageTest('www.webpagetest.org');3var fs = require('fs');4var options = {5};6wpt.runTest(url, options, function(err, data) {7 if (err) return console.error(err);8 var testId = data.data.testId;9 console.log('Test ID: ' + testId);10 wpt.getTestResults(testId, function(err, data) {11 if (err) return console.error(err);12 console.log(data);13 var testId = data.data.testId;14 var testUrl = data.data.summary;15 var testResults = data.data.median.firstView;16 var testResultsString = JSON.stringify(testResults);17 var testResultsObject = JSON.parse(testResultsString);18 console.log(testResultsObject);19 var testResultsBytes = testResultsObject.bytesIn;20 console.log(testResultsBytes);21 fs.writeFile('test.txt', testResultsBytes, function(err) {22 if (err) {23 return console.log(err);24 }25 console.log('The file was saved!');26 });27 });28});

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Using AI Code Generation

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1var fs = require('fs');2var wpt = require('webpagetest');3var client = wpt('www.webpagetest.org');4var url = 'www.google.com';5var options = {6};7client.runTest(url, options, function(err, data) {8 if (err) return console.error(err);9 console.log(data);10 client.getTestResults(data.data.testId, function(err, data) {11 if (err) return console.error(err);12 console.log(data);13 client.getTestStatus(data.data.testId, function(err, data) {14 if (err) return console.error(err);15 console.log(data);16 client.getTestResults(data.data.testId, function(err, data) {17 if (err) return console.error(err);18 console.log(data);19 client.getTestResults(data.data.testId, function(err, data) {20 if (err) return console.error(err);21 console.log(data);22 });23 });24 });25 });26});

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Using AI Code Generation

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1var wptStream = require('wpt-stream');2var stream = new wptStream();3var data = 'some data';4stream.write(data);5console.log(stream.writtenBytes);6#### wptStream.write(data)7#### wptStream.on('data', function(data) {})8#### wptStream.on('end', function() {})9#### wptStream.on('error', function(error) {})10#### wptStream.on('close', function() {})11#### wptStream.pause()12#### wptStream.resume()13#### wptStream.destroy()14#### wptStream.destroySoon()

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Using AI Code Generation

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1var wptools = require('wptools');2var fs = require('fs');3var path = require('path');4wptools.page('wikipedia').get(function(err, response) {5 if (err) {6 console.log(err);7 return;8 }9 var url = response.image();10 wptools.bytes(url, function(err, response) {11 if (err) {12 console.log(err);13 return;14 }15 fs.writeFile(path.join(__dirname, 'test.jpg'), response, function(err) {16 if (err) {17 console.log(err);18 return;19 }20 console.log('file written');21 });22 });23});24### wptools.page()25 * `imageInfo()` - Returns an object with the following properties:

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Using AI Code Generation

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1var wpt = require('wpt');2var wpt = new wpt();3wpt.writtenBytes(100, function(error, writtenBytes){4 if(error){5 console.log(error);6 }7 else{8 console.log(writtenBytes);9 }10});11wpt.writtenBytes(1000, function(error, writtenBytes){12 if(error){13 console.log(error);14 }15 else{16 console.log(writtenBytes);17 }18});19wpt.writtenBytes(10000, function(error, writtenBytes){20 if(error){21 console.log(error);22 }23 else{24 console.log(writtenBytes);25 }26});27wpt.writtenBytes(100000, function(error, writtenBytes){28 if(error){29 console.log(error);30 }31 else{32 console.log(writtenBytes);33 }34});35wpt.writtenBytes(1000000, function(error, writtenBytes){36 if(error){37 console.log(error);38 }39 else{40 console.log(writtenBytes);41 }42});43wpt.writtenBytes(10000000, function(error, writtenBytes){44 if(error){45 console.log(error);46 }47 else{48 console.log(writtenBytes);49 }50});51wpt.writtenBytes(100000000, function(error, writtenBytes){52 if(error){53 console.log(error);54 }55 else{56 console.log(writtenBytes);57 }58});59wpt.writtenBytes(1000000000, function(error, writtenBytes){60 if(error){61 console.log(error

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Using AI Code Generation

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1var fs = require('fs');2var wpt = require('webpagetest');3var options = {4};5var webpagetest = new wpt('www.webpagetest.org', options.key);6var runTest = function (url) {7 webpagetest.runTest(url, options, function (err, data) {8 if (err) {9 console.log(err);10 } else {11 console.log('Test submitted');12 console.log('Test ID: ' + data.data.testId);13 setTimeout(function () {14 checkTestStatus(data.data.testId);15 }, 10000);16 }17 });18};19var checkTestStatus = function (testId) {20 webpagetest.getTestStatus(testId, function (err, data) {21 if (err) {22 console.log(err);23 } else {24 console.log('Test Status: ' + data.data.statusText);25 if (data.data.statusText === 'Test Complete') {26 console.log('Test Results: ' + data.data.summary);27 console.log('Test ID: ' + data.data.testId);28 console.log('Test URL: ' + data.data.userUrl);29 console.log('Test Location: ' + data.data.location);30 console.log('Test First View: ' + data.data.runs[1].firstView);31 console.log('Test Repeat View: ' + data.data.runs[1].repeatView);32 console.log('Test First View: ' + data.data.runs[1].firstView);33 console.log('Test Repeat View: ' + data.data.runs[1].repeatView);34 console.log('Test PNG Screenshot: ' + data.data.runs[1].firstView.images.png);35 console.log('Test JPEG Screenshot: ' + data.data.runs[1].firstView.images.jpeg);36 console.log('Test Video: ' + data.data.runs[1].firstView.video);

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Using AI Code Generation

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1var wpt = require('webpagetest');2var options = {3};4var test = wpt(options);5test.runTest(url, function(err, data) {6 if (err) return console.error(err);7 console.log('Test submitted. Polling for results.');8 test.waitForTestComplete(data.data.testId, function(err, data) {9 if (err) return console.error(err);10 console.log('Test completed. View results at: ' + data.data.summary);11 test.getTestResults(data.data.testId, function(err, data) {12 if (err) return console.error(err);13 console.log(data.data.runs[1].firstView.writtenBytes);14 });15 });16});

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