How to use _onExecutionContextsCleared method in Puppeteer

Best JavaScript code snippet using puppeteer

Coverage.js

Source:Coverage.js

...86      this._client.send('Debugger.enable'),87      this._client.send('Debugger.setSkipAllPauses', {skip: true})88    ]);89  }90  _onExecutionContextsCleared() {91    if (!this._resetOnNavigation)92      return;93    this._scriptURLs.clear();94    this._scriptSources.clear();95  }96  /**97   * @param {!Object} event98   */99  async _onScriptParsed(event) {100    // Ignore anonymous scripts101    if (!event.url)102      return;103    try {104      const response = await this._client.send('Debugger.getScriptSource', {scriptId: event.scriptId});105      this._scriptURLs.set(event.scriptId, event.url);106      this._scriptSources.set(event.scriptId, response.scriptSource);107    } catch (e) {108      // This might happen if the page has already navigated away.109      debugError(e);110    }111  }112  /**113   * @return {!Promise<!Array<!CoverageEntry>>}114   */115  async stop() {116    console.assert(this._enabled, 'JSCoverage is not enabled');117    this._enabled = false;118    const [profileResponse] = await Promise.all([119      this._client.send('Profiler.takePreciseCoverage'),120      this._client.send('Profiler.stopPreciseCoverage'),121      this._client.send('Profiler.disable'),122      this._client.send('Debugger.disable'),123    ]);124    helper.removeEventListeners(this._eventListeners);125    const coverage = [];126    for (const entry of profileResponse.result) {127      const url = this._scriptURLs.get(entry.scriptId);128      const text = this._scriptSources.get(entry.scriptId);129      if (text === undefined || url === undefined)130        continue;131      const flattenRanges = [];132      for (const func of entry.functions)133        flattenRanges.push(...func.ranges);134      const ranges = convertToDisjointRanges(flattenRanges);135      coverage.push({url, ranges, text});136    }137    return coverage;138  }139}140class CSSCoverage {141  /**142   * @param {!Puppeteer.CDPSession} client143   */144  constructor(client) {145    this._client = client;146    this._enabled = false;147    this._stylesheetURLs = new Map();148    this._stylesheetSources = new Map();149    this._eventListeners = [];150    this._resetOnNavigation = false;151  }152  /**153   * @param {!Object} options154   */155  async start(options = {}) {156    console.assert(!this._enabled, 'CSSCoverage is already enabled');157    this._resetOnNavigation = options.resetOnNavigation === undefined ? true : !!options.resetOnNavigation;158    this._enabled = true;159    this._stylesheetURLs.clear();160    this._stylesheetSources.clear();161    this._eventListeners = [162      helper.addEventListener(this._client, 'CSS.styleSheetAdded', this._onStyleSheet.bind(this)),163      helper.addEventListener(this._client, 'Runtime.executionContextsCleared', this._onExecutionContextsCleared.bind(this)),164    ];165    await Promise.all([166      this._client.send('DOM.enable'),167      this._client.send('CSS.enable'),168      this._client.send('CSS.startRuleUsageTracking'),169    ]);170  }171  _onExecutionContextsCleared() {172    if (!this._resetOnNavigation)173      return;174    this._stylesheetURLs.clear();175    this._stylesheetSources.clear();176  }177  /**178   * @param {!Object} event179   */180  async _onStyleSheet(event) {181    const header = event.header;182    // Ignore anonymous scripts183    if (!header.sourceURL)184      return;185    try {...

crCoverage.js

Source:crCoverage.js

...79  }80  _onDebuggerPaused() {81    this._client.send('Debugger.resume');82  }83  _onExecutionContextsCleared() {84    if (!this._resetOnNavigation) return;85    this._scriptIds.clear();86    this._scriptSources.clear();87  }88  async _onScriptParsed(event) {89    this._scriptIds.add(event.scriptId); // Ignore other anonymous scripts unless the reportAnonymousScripts option is true.90    if (!event.url && !this._reportAnonymousScripts) return; // This might fail if the page has already navigated away.91    const response = await this._client._sendMayFail('Debugger.getScriptSource', {92      scriptId: event.scriptId93    });94    if (response) this._scriptSources.set(event.scriptId, response.scriptSource);95  }96  async stop() {97    (0, _utils.assert)(this._enabled, 'JSCoverage is not enabled');98    this._enabled = false;99    const [profileResponse] = await Promise.all([this._client.send('Profiler.takePreciseCoverage'), this._client.send('Profiler.stopPreciseCoverage'), this._client.send('Profiler.disable'), this._client.send('Debugger.disable')]);100    _eventsHelper.eventsHelper.removeEventListeners(this._eventListeners);101    const coverage = [];102    for (const entry of profileResponse.result) {103      if (!this._scriptIds.has(entry.scriptId)) continue;104      if (!entry.url && !this._reportAnonymousScripts) continue;105      const source = this._scriptSources.get(entry.scriptId);106      if (source) coverage.push({ ...entry,107        source108      });else coverage.push(entry);109    }110    return coverage;111  }112}113class CSSCoverage {114  constructor(client) {115    this._client = void 0;116    this._enabled = void 0;117    this._stylesheetURLs = void 0;118    this._stylesheetSources = void 0;119    this._eventListeners = void 0;120    this._resetOnNavigation = void 0;121    this._client = client;122    this._enabled = false;123    this._stylesheetURLs = new Map();124    this._stylesheetSources = new Map();125    this._eventListeners = [];126    this._resetOnNavigation = false;127  }128  async start(options = {}) {129    (0, _utils.assert)(!this._enabled, 'CSSCoverage is already enabled');130    const {131      resetOnNavigation = true132    } = options;133    this._resetOnNavigation = resetOnNavigation;134    this._enabled = true;135    this._stylesheetURLs.clear();136    this._stylesheetSources.clear();137    this._eventListeners = [_eventsHelper.eventsHelper.addEventListener(this._client, 'CSS.styleSheetAdded', this._onStyleSheet.bind(this)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextsCleared', this._onExecutionContextsCleared.bind(this))];138    await Promise.all([this._client.send('DOM.enable'), this._client.send('CSS.enable'), this._client.send('CSS.startRuleUsageTracking')]);139  }140  _onExecutionContextsCleared() {141    if (!this._resetOnNavigation) return;142    this._stylesheetURLs.clear();143    this._stylesheetSources.clear();144  }145  async _onStyleSheet(event) {146    const header = event.header; // Ignore anonymous scripts147    if (!header.sourceURL) return; // This might fail if the page has already navigated away.148    const response = await this._client._sendMayFail('CSS.getStyleSheetText', {149      styleSheetId: header.styleSheetId150    });151    if (response) {152      this._stylesheetURLs.set(header.styleSheetId, header.sourceURL);153      this._stylesheetSources.set(header.styleSheetId, response.text);154    }...

CSSCoverage.js

Source:CSSCoverage.js

1const { helper, debugError, assert } = require('../helper')2const { convertToDisjointRanges } = require('../__shared')3class CSSCoverage {4  /**5   * @param {!Chrome|CRIConnection|CDPSession|Object} client6   */7  constructor (client) {8    this._client = client9    this._enabled = false10    this._stylesheetURLs = new Map()11    this._stylesheetSources = new Map()12    this._eventListeners = []13    this._resetOnNavigation = false14  }15  /**16   * @param {{resetOnNavigation?: boolean}=} options17   */18  async start (options = {}) {19    assert(!this._enabled, 'CSSCoverage is already enabled')20    const { resetOnNavigation = true } = options21    this._resetOnNavigation = resetOnNavigation22    this._enabled = true23    this._stylesheetURLs.clear()24    this._stylesheetSources.clear()25    this._eventListeners = [26      helper.addEventListener(27        this._client,28        'CSS.styleSheetAdded',29        this._onStyleSheet.bind(this)30      ),31      helper.addEventListener(32        this._client,33        'Runtime.executionContextsCleared',34        this._onExecutionContextsCleared.bind(this)35      )36    ]37    await Promise.all([38      this._client.send('DOM.enable'),39      this._client.send('CSS.enable'),40      this._client.send('CSS.startRuleUsageTracking')41    ])42  }43  _onExecutionContextsCleared () {44    if (!this._resetOnNavigation) return45    this._stylesheetURLs.clear()46    this._stylesheetSources.clear()47  }48  /**49   * @param {!Object} event50   */51  async _onStyleSheet (event) {52    const header = event.header53    // Ignore anonymous scripts54    if (!header.sourceURL) return55    try {56      const response = await this._client.send('CSS.getStyleSheetText', {57        styleSheetId: header.styleSheetId58      })59      this._stylesheetURLs.set(header.styleSheetId, header.sourceURL)60      this._stylesheetSources.set(header.styleSheetId, response.text)61    } catch (e) {62      // This might happen if the page has already navigated away.63      debugError(e)64    }65  }66  /**67   * @return {Promise<Array<CoverageEntry>>}68   */69  async stop () {70    assert(this._enabled, 'CSSCoverage is not enabled')71    this._enabled = false72    const ruleTrackingResponse = await this._client.send(73      'CSS.stopRuleUsageTracking'74    )75    await Promise.all([76      this._client.send('CSS.disable'),77      this._client.send('DOM.disable')78    ])79    helper.removeEventListeners(this._eventListeners)80    // aggregate by styleSheetId81    const styleSheetIdToCoverage = new Map()82    for (const entry of ruleTrackingResponse.ruleUsage) {83      let ranges = styleSheetIdToCoverage.get(entry.styleSheetId)84      if (!ranges) {85        ranges = []86        styleSheetIdToCoverage.set(entry.styleSheetId, ranges)87      }88      ranges.push({89        startOffset: entry.startOffset,90        endOffset: entry.endOffset,91        count: entry.used ? 1 : 092      })93    }94    const coverage = []95    for (const styleSheetId of this._stylesheetURLs.keys()) {96      const url = this._stylesheetURLs.get(styleSheetId)97      const text = this._stylesheetSources.get(styleSheetId)98      const ranges = convertToDisjointRanges(99        styleSheetIdToCoverage.get(styleSheetId) || []100      )101      coverage.push({ url, ranges, text })102    }103    return coverage104  }105}...

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  await page._client.send('Runtime.enable');6  await page._client.send('Runtime.onExecutionContextsCleared', (event) => {7    console.log(event);8  });9  await page.evaluate(() => {10    console.log('hello');11  });12  await browser.close();13})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  await page._client.send('Runtime.enable');6  await page._client.on('Runtime.executionContextsCleared', async () => {7    console.log('ExecutionContextsCleared');8  });9  await page.close();10  await browser.close();11})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch({headless: false});4  const page = await browser.newPage();5  await page._client.send('Page.enable');6  await page._client.on('Page.javascriptDialogOpening', async dialog => {7    console.log(dialog);8    await dialog.accept();9  });10  await page.evaluate(() => {11    alert('Hello world!');12  });13})();14{ type: 'alert',15  defaultPrompt: '' }16page._onExecutionContextsCleared();17const puppeteer = require('puppeteer');18(async () => {19  const browser = await puppeteer.launch({headless: false});20  const page = await browser.newPage();21  await page._client.send('Page.enable');22  await page._client.on('Page.javascriptDialogOpening', async dialog => {23    console.log(dialog);24    await dialog.accept();25  });26  await page.evaluate(() => {27    alert('Hello world!');28  });29  await page._onExecutionContextsCleared();30  await page.reload();31})();32{ type: 'alert',33  defaultPrompt: '' }

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  await page.evaluate(() => {6    window.localStorage.setItem('name', 'value');7  });8  await page._client.send('Network.clearBrowserCookies');9  await page._client.send('Network.clearBrowserCache');10  await page._client.send('Network.clearBrowserCachedCredentials');

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3    const browser = await puppeteer.launch();4    const page = await browser.newPage();5    await page.exposeFunction('onExecutionContextsCleared', () => {6        console.log('onExecutionContextsCleared');7    });8    await page.evaluateOnNewDocument(() => {9        window.addEventListener('executionContextsCleared', () => {10            window.onExecutionContextsCleared();11        });12    });13    await page.evaluate(() => {14        console.log('This is executed in the context of the page.');15    });16    await browser.close();17})();18newPage()19const page = await browser.newPage();20close()21await browser.close();22goto()23evaluate()24await page.evaluate(() => {25    console.log('This is executed in the context of the page.');26});27exposeFunction()28await page.exposeFunction('onExecutionContextsCleared', () => {29    console.log('onExecutionContextsCleared');30});31evaluateOnNewDocument()

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch({headless: false});4  const page = await browser.newPage();5  await page._client.send('Network.clearBrowserCache');6  await page.screenshot({path: 'example.png'});7  await browser.close();8})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch();4  const page = await browser.newPage();5  page.on('pageerror', error => {6    console.log('Page error: ' + error.toString());7  });8  page.on('error', error => {9    console.log('Error: ' + error.toString());10  });11  page.on('console', msg => {12    for (let i = 0; i < msg.args().length; ++i)13      console.log(`${i}: ${msg.args()[i]}`);14  });15  page.on('requestfailed', request => {16    console.log(request.url() + ' ' + request.failure().errorText);17  });18  page.on('requestfinished', request => {19    console.log(`${request.url()} ${request.status()} ${request.resourceType()}`);20  });21  page.on('response', response => {22    console.log(`${response.url()} ${response.status()} ${response.headers()['content-type']}`);23  });24  page.on('request', request => {25    console.log(`${request.url()} ${request.resourceType()}`);26  });27  page.on('frameattached', frame => {28    console.log(`Frame ${frame.name()} attached to ${frame.parentFrame().name()}`);29  });30  page.on('framedetached', frame => {31    console.log(`Frame ${frame.name()} detached`);32  });33  page.on('framenavigated', frame => {34    console.log(`Frame ${frame.name()} navigated to ${frame.url()}`);35  });36  page.on('load', () => {37    console.log('Page loaded');38  });39  page.on('domcontent

Using AI Code Generation

1const puppeteer = require('puppeteer');2const fs = require('fs');3(async () => {4  const browser = await puppeteer.launch();5  const page = await browser.newPage();6  await page.screenshot({path: 'google.png'});7  await browser.close();8})();9const puppeteer = require('puppeteer');10const fs = require('fs');11(async () => {12  const browser = await puppeteer.launch();13  const page = await browser.newPage();14  await page.screenshot({path: 'google.png'});15  await browser.close();16})();17const puppeteer = require('puppeteer');18const fs = require('fs');19(async () => {20  const browser = await puppeteer.launch();21  const page = await browser.newPage();22  await page.screenshot({path: 'google.png'});23  await browser.close();24})();25const puppeteer = require('puppeteer');26const fs = require('fs');27(async () => {28  const browser = await puppeteer.launch();29  const page = await browser.newPage();30  await page.screenshot({path: 'google.png'});31  await browser.close();32})();33const puppeteer = require('puppeteer');34const fs = require('fs');35(async () => {36  const browser = await puppeteer.launch();37  const page = await browser.newPage();38  await page.screenshot({path: 'google.png'});39  await browser.close();40})();

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