Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use createDevtoolsPerformanceHook method in Playwright Internal

Best JavaScript code snippet using playwright-internal

vue.runtime.esm-browser.js

Source:vue.runtime.esm-browser.js

...1626    return (component) => {1627        emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);1628    };1629}1630const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);1631const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);1632function createDevtoolsPerformanceHook(hook) {1633    return (component, type, time) => {1634        emit(hook, component.appContext.app, component.uid, component, type, time);1635    };1636}1637function devtoolsComponentEmit(component, event, params) {1638    emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);1639}1640function emit$1(instance, event, ...rawArgs) {1641    const props = instance.vnode.props || EMPTY_OBJ;1642    {1643        const { emitsOptions, propsOptions: [propsOptions] } = instance;1644        if (emitsOptions) {1645            if (!(event in emitsOptions) &&1646                !(false )) {...

index.js

Source:index.js

...3203    return (component) => {3204      emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : void 0, component);3205    };3206  }3207  var devtoolsPerfStart = /* @__PURE__ */ createDevtoolsPerformanceHook("perf:start");3208  var devtoolsPerfEnd = /* @__PURE__ */ createDevtoolsPerformanceHook("perf:end");3209  function createDevtoolsPerformanceHook(hook) {3210    return (component, type, time) => {3211      emit(hook, component.appContext.app, component.uid, component, type, time);3212    };3213  }3214  function devtoolsComponentEmit(component, event, params) {3215    emit("component:emit", component.appContext.app, component, event, params);3216  }3217  function emit$1(instance, event, ...rawArgs) {3218    const props = instance.vnode.props || EMPTY_OBJ;3219    if (true) {3220      const { emitsOptions, propsOptions: [propsOptions] } = instance;3221      if (emitsOptions) {3222        if (!(event in emitsOptions) && true) {3223          if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {...

vendor-node_modules_vue_runtime-core_dist_runtime-core_esm-bundler_js-5c40226b.js

Source:vendor-node_modules_vue_runtime-core_dist_runtime-core_esm-bundler_js-5c40226b.js

...688            return;689        devtools.emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);690    };691}692const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);693const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);694function createDevtoolsPerformanceHook(hook) {695    return (component, type, time) => {696        if (!devtools)697            return;698        devtools.emit(hook, component.appContext.app, component.uid, component, type, time);699    };700}701function devtoolsComponentEmit(component, event, params) {702    if (!devtools)703        return;704    devtools.emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);705}706const deprecationData = {707    ["GLOBAL_MOUNT" /* GLOBAL_MOUNT */]: {708        message: `The global app bootstrapping API has changed: vm.$mount() and the "el" ` +...

runtime-core.esm-bundler.js

Source:runtime-core.esm-bundler.js

...212    return (component) => {213        emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);214    };215}216const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);217const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);218function createDevtoolsPerformanceHook(hook) {219    return (component, type, time) => {220        emit(hook, component.appContext.app, component.uid, component, type, time);221    };222}223function devtoolsComponentEmit(component, event, params) {224    emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);225}226function emit$1(instance, event, ...rawArgs) {227    const props = instance.vnode.props || EMPTY_OBJ;228    if ((process.env.NODE_ENV !== 'production')) {229        const { emitsOptions, propsOptions: [propsOptions] } = instance;230        if (emitsOptions) {231            if (!(event in emitsOptions) &&232                !(false )) {...

runtime-core.cjs.js

Source:runtime-core.cjs.js

...211    return (component) => {212        emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);213    };214}215const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);216const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);217function createDevtoolsPerformanceHook(hook) {218    return (component, type, time) => {219        emit(hook, component.appContext.app, component.uid, component, type, time);220    };221}222function devtoolsComponentEmit(component, event, params) {223    emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);224}225function emit$1(instance, event, ...rawArgs) {226    const props = instance.vnode.props || shared.EMPTY_OBJ;227    {228        const { emitsOptions, propsOptions: [propsOptions] } = instance;229        if (emitsOptions) {230            if (!(event in emitsOptions) &&231                !(false )) {...

vue.js

Source:vue.js

...1713        return (component) => {1714            emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);1715        };1716    }1717    const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);1718    const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);1719    function createDevtoolsPerformanceHook(hook) {1720        return (component, type, time) => {1721            emit(hook, component.appContext.app, component.uid, component, type, time);1722        };1723    }1724    function devtoolsComponentEmit(component, event, params) {1725        emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);1726    }1727  1728    function emit$1(instance, event, ...rawArgs) {1729        const props = instance.vnode.props || EMPTY_OBJ;1730        {1731            const { emitsOptions, propsOptions: [propsOptions] } = instance;1732            if (emitsOptions) {1733                if (!(event in emitsOptions) &&...

index.esm.js

Source:index.esm.js

...1423    return (component) => {1424        emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);1425    };1426}1427const devtoolsPerfStart = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:start" /* PERFORMANCE_START */);1428const devtoolsPerfEnd = /*#__PURE__*/ createDevtoolsPerformanceHook("perf:end" /* PERFORMANCE_END */);1429function createDevtoolsPerformanceHook(hook) {1430    return (component, type, time) => {1431        emit(hook, component.appContext.app, component.uid, component, type, time);1432    };1433}1434function devtoolsComponentEmit(component, event, params) {1435    emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);1436}1437function emit$1(instance, event, ...rawArgs) {1438    const props = instance.vnode.props || EMPTY_OBJ;1439    if ((process.env.NODE_ENV !== 'production')) {1440        const { emitsOptions, propsOptions: [propsOptions] } = instance;1441        if (emitsOptions) {1442            if (!(event in emitsOptions) &&1443                !(false )) {
...

main.js

Source:main.js

...1640  return (component) => {1641    emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : void 0, component);1642  };1643}1644var devtoolsPerfStart = /* @__PURE__ */ createDevtoolsPerformanceHook("perf:start");1645var devtoolsPerfEnd = /* @__PURE__ */ createDevtoolsPerformanceHook("perf:end");1646function createDevtoolsPerformanceHook(hook) {1647  return (component, type, time) => {1648    emit(hook, component.appContext.app, component.uid, component, type, time);1649  };1650}1651function devtoolsComponentEmit(component, event, params) {1652  emit("component:emit", component.appContext.app, component, event, params);1653}1654function emit$1(instance, event, ...rawArgs) {1655  const props = instance.vnode.props || EMPTY_OBJ;1656  if (true) {1657    const { emitsOptions, propsOptions: [propsOptions] } = instance;1658    if (emitsOptions) {1659      if (!(event in emitsOptions) && true) {1660        if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {...

Using AI Code Generation

1const { chromium } = require('playwright');2const { createDevtoolsPerformanceHook } = require('playwright/lib/server/performance');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const performanceHook = createDevtoolsPerformanceHook(page);8  await performanceHook.start();9  const metrics = await performanceHook.stop();10  console.log(metrics);11  await browser.close();12})();13### `createDevtoolsPerformanceHook(page)`14#### `async start()`15#### `async stop()`

Using AI Code Generation

1const { chromium } = require('playwright');2const { createDevtoolsPerformanceHook } = require('playwright-core/lib/utils/devtoolsPerformanceHook');3(async () => {4  const browser = await chromium.launch({5  });6  const page = await browser.newPage();7  const performanceHook = createDevtoolsPerformanceHook(page);8  await performanceHook.start();9  const performance = await performanceHook.stop();10  console.log(performance);11  await browser.close();12})();

Using AI Code Generation

1const { createDevtoolsPerformanceHook } = require('@playwright/test/lib/server/devtools');2const { chromium } = require('playwright');3const browser = await chromium.launch();4const context = await browser.newContext();5const page = await context.newPage();6const devtools = await page._mainFrame._client;7const performanceHook = createDevtoolsPerformanceHook(devtools);8await performanceHook.enable();9await performanceHook.start();10await performanceHook.stop();11const events = await performanceHook.getEvents();12console.log(events);13await browser.close();14### `createDevtoolsPerformanceHook(client)`

Using AI Code Generation

1const { chromium } = require('playwright');2const { createDevtoolsPerformanceHook } = require('playwright/lib/server/perfomanceHooks');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  const devtoolsPerformanceHook = createDevtoolsPerformanceHook(page);8  await devtoolsPerformanceHook.start();9  const trace = await devtoolsPerformanceHook.stop();10  console.log(trace);11  await browser.close();12})();

Using AI Code Generation

1const { chromium, webkit, firefox } = require('playwright');2const { createDevtoolsPerformanceHook } = require('playwright/lib/server/performance');3const { PerformanceObserver, performance } = require('perf_hooks');4(async () => {5  const browser = await chromium.launch();6  const page = await browser.newPage();7  const hook = createDevtoolsPerformanceHook(page);8  await hook.enable();9  const observer = new PerformanceObserver((list) => {10    const entries = list.getEntries();11    console.log(entries);12  });13  observer.observe({ entryTypes: ['measure'] });14  await page.evaluate(() => {15    performance.mark('a');16    performance.mark('b');17    performance.measure('ab', 'a', 'b');18  });19  await hook.disable();20  await browser.close();21})();22const { test, expect } = require('@playwright/test');23test('test', async ({ page }) => {24  const title = page.locator('title');25  expect(await title.textContent()).toBe('Google');26});

Using AI Code Generation

1const { createDevtoolsPerformanceHook } = require("playwright-core/lib/server/chromium/crBrowser");2const { chromium } = require("playwright-core");3const browser = await chromium.launch();4const page = await browser.newPage();5const client = await page.context().newCDPSession(page);6const performanceHook = createDevtoolsPerformanceHook(client);7await performanceHook.start();8const metrics = await performanceHook.stop();9console.log(metrics);10await browser.close();11const playwright = require("playwright");12const { PerformanceHook } = require("playwright-performance");13const browser = await playwright.chromium.launch();14const page = await browser.newPage();15const performanceHook = new PerformanceHook(page);16await performanceHook.start();17const metrics = await performanceHook.stop();18console.log(metrics);19await browser.close();

Using AI Code Generation

1const { createDevtoolsPerformanceHook } = require('@playwright/test');2const { chromium } = require('playwright');3const { chromium: chromiumLauncher } = require('playwright');4const { createServer } = require('http-server');5const path = require('path');6const server = createServer({7  root: path.join(__dirname, 'public'),8  headers: {9  },10});11server.listen(8080, () => {12});13(async () => {14  const browser = await chromium.launch({15  });16  const page = await browser.newPage();17  const devtools = await page.context().newCDPSession(page);18  const performanceHook = createDevtoolsPerformanceHook(devtools);19  await performanceHook.enable();20  await performanceHook.on('performanceEntry', (entry) => {21    console.log(entry);22  });23  await page.waitForTimeout(10000);24  await performanceHook.disable();25  await browser.close();26  server.close();27})();28### createDevtoolsPerformanceHook(devtools: CDPSession)29### PerformanceHook.enable()30### PerformanceHook.disable()31### PerformanceHook.on(event: string, handler: Function)32### PerformanceHook.off(event: string, handler: Function)

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.