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How to use writtenBytes method in wpt

Best JavaScript code snippet using wpt

ReactServerStreamConfigNode.js

Source:ReactServerStreamConfigNode.js

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);...

ReactServerStreamConfigBrowser.js

Source:ReactServerStreamConfigBrowser.js

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  }...

Using AI Code Generation

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});

Using AI Code Generation

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});

Using AI Code Generation

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});

Using AI Code Generation

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()

Using AI Code Generation

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:

Using AI Code Generation

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

Using AI Code Generation

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);

Using AI Code Generation

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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