How to use emulateCPUThrottling method in Puppeteer

Best JavaScript code snippet using puppeteer

index.js

Source:index.js

...32    var res = [];33    for (i = 0; i < iterazioni; i++) {34        const page = await browser.newPage();35        await page.emulateNetworkConditions(avgFixed)36        await page.emulateCPUThrottling(argv.cpu || 1);37        page.setCacheEnabled(false);38        if (argv.nexus == true) {39            await page.emulate(nexus);40        } else {41            await page.setViewport({42                width: argv.w || 1920,43                height: argv.h || 1080,44                deviceScaleFactor: 1,45                isMobile: argv.mobile || false,46            });47        }48        page.on('console', function(msg) { try { log.push(JSON.parse(msg.text())); } catch {49                (argv.v == true) && console.log(msg.text()) } });50        await page.goto(argv.url);...

lcp.js

Source:lcp.js

...47    const client = await page.target().createCDPSession();48    await client.send("Network.enable");49    await client.send("ServiceWorker.enable");50    // await page.emulateNetworkConditions(networkConditions["Fast 3G"]);51    // await page.emulateCPUThrottling(4);52    await page.emulate(phone);53    await page.evaluateOnNewDocument(calculateLCP);54    await page.goto(url, { waitUntil: "load", timeout: 60000 });55    const lcp = await page.evaluate(() => {56      return window.largestContentfulPaint;57    });58    browser.close();59    return lcp;60  } catch (error) {61    console.log(error);62    browser.close();63  }64}65getLCP("https://mw-production1.coach.com").then((lcp) =>...

benchmark.js

Source:benchmark.js

...4const test = async (name) => {5  const browser = await puppeteer.launch({ headless, timeout: 0 })6  const page = await browser.newPage()7  const navigationPromise = page.waitForNavigation()8  await page.emulateCPUThrottling(6)9  const root = `benchmark/${name}`10  if (!fs.existsSync(root)) {11    fs.mkdirSync(root, { recursive: true })12  }13  await page.tracing.start({ path: `${root}/tracing.json` })14  page.setDefaultNavigationTimeout(0)15  await page.goto(`http://localhost:3000/${name}`, {16    waitUntil: "load",17    timeout: 0,18  })19  await navigationPromise20  const count = 421  for (let i = 0; i < count; i++) {22    await page.type(`[name=input-${i}]`, "Hello")...

mac.wsce.config.js

Source:mac.wsce.config.js

...20                name: "CPU Throttling",21                when: "before",22                twice: false,23                run: async (_, page, __) => {24                    await page.emulateCPUThrottling(1);25                },26            },27        ],28        puppeteerOptions: { headless: true },29    },30    exporter: {31        port: 3001,32    },...

puppet.js

Source:puppet.js

...15      url: process.env.object_FULL_URL,16      name: "objecttoken",17      value: process.env.object_AUTH18  })19  await page.emulateCPUThrottling(parseInt(process.env.object_THROTTLE));20  console.log("page setup complete")21  await page.goto(process.env.object_FULL_URL);22  page.on('console', (msg) => console.log(msg.text()));...

throttle-network-cpu.js

Source:throttle-network-cpu.js

...5  const client = await page.target().createCDPSession();6  await client.send('Network.enable');7  // Simulated network throttling (Slow 3G)8  await page.emulateNetworkConditions(puppeteer.networkConditions['Slow 3G']);9  await page.emulateCPUThrottling(4);10  await browser.close();...

estimo.js

Source:estimo.js

1const estimo = require('estimo')2async function doThis() {3  const report = await estimo(['http://localhost:3000/error-boundary', 'http://localhost:3000/optional-chaining'], {4    runs: 5, emulateCpuThrottling: true,5    cpuThrottlingRate: 4,6  })7  console.log({ report });8}...

cpu-throttling.js

Source:cpu-throttling.js

...4    name: "CPU Throttling",5    when: "before",6    twice: false,7    run: async (_, page, __) => {8        await page.emulateCPUThrottling(factor);9    },10};...

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.emulateCPUThrottling(4);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    });5    const page = await browser.newPage();6    await page.emulateCPUThrottling(4);7    await page.waitFor(5000);8    await browser.close();9})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2const fs = require('fs');3(async () => {4  const browser = await puppeteer.launch({ headless: false });5  const page = await browser.newPage();6  await page.emulateCPUThrottling(4);7  await page.screenshot({ path: 'google.png' });8  await browser.close();9})();10const puppeteer = require('puppeteer');11const fs = require('fs');12(async () => {13  const browser = await puppeteer.launch({ headless: false });14  const page = await browser.newPage();15  await page.emulateNetworkConditions({16  });17  await page.screenshot({ path: 'google.png' });18  await browser.close();19})();20const puppeteer = require('puppeteer');21const fs = require('fs');22(async () => {23  const browser = await puppeteer.launch({ headless: false });24  const page = await browser.newPage();25  await page.emulateMedia('screen');26  await page.screenshot({ path: 'google.png' });27  await browser.close();28})();29const puppeteer = require('puppeteer');30const fs = require('fs');31(async () => {32  const browser = await puppeteer.launch({ headless: false });33  const page = await browser.newPage();34  const title = await page.evaluate(() => document.title);35  console.log(title);36  await browser.close();37})();38const puppeteer = require('puppeteer');39const fs = require('fs');40(async () => {41  const browser = await puppeteer.launch({ headless: false });42  const page = await browser.newPage();

Using AI Code Generation

1const puppeteer = require("puppeteer");2(async () => {3  const browser = await puppeteer.launch({4  });5  let pages = await browser.pages();6  let tab = pages[0];7  await tab.emulateCPUThrottling(4);8})();

Using AI Code Generation

1const puppeteer = require('puppeteer');2async function emulateCPUThrottling() {3  const browser = await puppeteer.launch({4  });5  const page = await browser.newPage();6  await page.emulate(puppeteer.devices['iPhone X']);7  await page.emulateCPUThrottling(4);8  await page.waitFor(5000);9  await browser.close();10}11emulateCPUThrottling();

Using AI Code Generation

1const puppeteer = require('puppeteer');2(async () => {3  const browser = await puppeteer.launch({headless: false, args: ['--disable-gpu', '--disable-dev-shm-usage', '--no-sandbox']});4  const page = await browser.newPage();5  const client = await page.target().createCDPSession();6  await client.send('Emulation.setCPUThrottlingRate', { rate: 4 });7  await page.screenshot({path: 'example.png'});8  await browser.close();9})();

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.emulateCPUThrottling(4);6  await page.screenshot({path: 'google.png'});7  await browser.close();8})();9const puppeteer = require('puppeteer');10(async () => {11  const browser = await puppeteer.launch({headless: false});12  const page = await browser.newPage();13  await page.emulateNetworkConditions({14  });15  await page.screenshot({path: 'google.png'});16  await browser.close();17})();18const puppeteer = require('puppeteer');19(async () => {20  const browser = await puppeteer.launch({headless: false});21  const page = await browser.newPage();22  await page.emulateMedia('screen');23  await page.screenshot({path: 'google.png'});24  await browser.close();25})();26const puppeteer = require('puppeteer');27(async () => {28  const browser = await puppeteer.launch({headless: false});29  const page = await browser.newPage();30  await page.emulate({31    viewport: {32    },33  });34  await page.screenshot({path: 'google.png'});35  await browser.close();36})();37const puppeteer = require('puppeteer');38(async () => {39  const browser = await puppeteer.launch({headless: false});

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