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manual-chrome-launcher.js
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manual-chrome-launcher.js
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#!/usr/bin/env node
'use strict';
// Keep this file in sync with lighthouse
// TODO: have LH depend on this one.
/**
* @fileoverview Script to launch a clean Chrome instance on-demand.
*
* Assuming Lighthouse is installed globally or `npm link`ed, use via:
* chrome-debug
* Optionally enable extensions or pass a port, additional chrome flags, and/or a URL
* chrome-debug --port=9222
* chrome-debug http://goat.com
* chrome-debug --show-paint-rects
* chrome-debug --enable-extensions
*/
require('./compiled-check.js')('./dist/chrome-launcher.js');
const {Launcher, launch} = require('./dist/chrome-launcher');
const args = process.argv.slice(2);
const chromeFlags = [];
let startingUrl;
let port;
let ignoreDefaultFlags;
if (args.length) {
const providedFlags = args.filter(flag => flag.startsWith('--'));
const portFlag = providedFlags.find(flag => flag.startsWith('--port='));
if (portFlag) port = parseInt(portFlag.replace('--port=', ''), 10);
const enableExtensions = !!providedFlags.find(flag => flag === '--enable-extensions');
// The basic pattern for enabling Chrome extensions
if (enableExtensions) {
ignoreDefaultFlags = true;
chromeFlags.push(...Launcher.defaultFlags().filter(flag => flag !== '--disable-extensions'));
}
chromeFlags.push(...providedFlags);
startingUrl = args.find(flag => !flag.startsWith('--'));
}
launch({
startingUrl,
port,
ignoreDefaultFlags,
chromeFlags,
})
// eslint-disable-next-line no-console
.then(v => console.log(`✨ Chrome debugging port: ${v.port}`));