browser(firefox): properly initialize debugging pipe on windows Firefox on Windows has 2 launch modes: - default: a special "launcher process" is used to start browser as a sub-process - non-default: browser process starts right away Firefox has a logic to detect how successful was the use of the launcher process to do self-recovery when things go wrong. Namely: - when attempting to use launcher process, firefox records a timestamp of the attempt beginning - once the launcher process successfully launches browser sub-process, firefox records another timestamp of the completion On a new launch, firefox checks what timestamps are present. If there's a timestamp that signifies start of launcher process, but no successful timestamp, it decides that last "launcher process" use was not successful and falls back to launching browser right away. When launching 2 firefox processes right away, the first process uses attempts to use launcher process and records the first timestamp. At the same time, the second instance sees the first timestamp and doesn't see the second timestamp, and falls back to launching browser right away. Our debugging pipe code, however, does not support non-launcher-process code path. This patch adds support for remote debugging pipe in case of non-launcher-process startup. Drive-by: - disable crashreporter altogether - remove stray dcheck that breaks firefox debug compilation - disable compilation of firefox update agent - do not use WIN32_DISTRIB flag unless doing full builds since it kills incremental compilation References #4660
🎭 Playwright
Documentation | API reference
Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API. Playwright is built to enable cross-browser web automation that is ever-green, capable, reliable and fast.
| Linux | macOS | Windows | |
|---|---|---|---|
| Chromium 90.0.4412.0 | ✅ | ✅ | ✅ |
| WebKit 14.1 | ✅ | ✅ | ✅ |
| Firefox 86.0b9 | ✅ | ✅ | ✅ |
Headless execution is supported for all the browsers on all platforms. Check out system requirements for details.
Usage
npm i -D playwright
This installs Playwright and browser binaries for Chromium, Firefox and WebKit. Once installed, you can require Playwright in a Node.js script and automate web browser interactions.
Capabilities
Playwright is built to automate the broad and growing set of web browser capabilities used by Single Page Apps and Progressive Web Apps.
- Scenarios that span multiple page, domains and iframes
- Auto-wait for elements to be ready before executing actions (like click, fill)
- Intercept network activity for stubbing and mocking network requests
- Emulate mobile devices, geolocation, permissions
- Support for web components via shadow-piercing selectors
- Native input events for mouse and keyboard
- Upload and download files
Examples
Page screenshot
This code snippet navigates to whatsmyuseragent.org in Chromium, Firefox and WebKit, and saves 3 screenshots.
const playwright = require('playwright');
(async () => {
for (const browserType of ['chromium', 'firefox', 'webkit']) {
const browser = await playwright[browserType].launch();
const context = await browser.newContext();
const page = await context.newPage();
await page.goto('http://whatsmyuseragent.org/');
await page.screenshot({ path: `example-${browserType}.png` });
await browser.close();
}
})();
Mobile and geolocation
This snippet emulates Mobile Safari on a device at a given geolocation, navigates to maps.google.com, performs action and takes a screenshot.
const { webkit, devices } = require('playwright');
const iPhone11 = devices['iPhone 11 Pro'];
(async () => {
const browser = await webkit.launch();
const context = await browser.newContext({
...iPhone11,
locale: 'en-US',
geolocation: { longitude: 12.492507, latitude: 41.889938 },
permissions: ['geolocation']
});
const page = await context.newPage();
await page.goto('https://maps.google.com');
await page.click('text="Your location"');
await page.waitForRequest(/.*preview\/pwa/);
await page.screenshot({ path: 'colosseum-iphone.png' });
await browser.close();
})();
Evaluate in browser context
This code snippet navigates to example.com in Firefox, and executes a script in the page context.
const { firefox } = require('playwright');
(async () => {
const browser = await firefox.launch();
const context = await browser.newContext();
const page = await context.newPage();
await page.goto('https://www.example.com/');
const dimensions = await page.evaluate(() => {
return {
width: document.documentElement.clientWidth,
height: document.documentElement.clientHeight,
deviceScaleFactor: window.devicePixelRatio
}
});
console.log(dimensions);
await browser.close();
})();
Intercept network requests
This code snippet sets up request routing for a WebKit page to log all network requests.
const { webkit } = require('playwright');
(async () => {
const browser = await webkit.launch();
const context = await browser.newContext();
const page = await context.newPage();
// Log and continue all network requests
page.route('**', route => {
console.log(route.request().url());
route.continue();
});
await page.goto('http://todomvc.com');
await browser.close();
})();