| [6a3a178] | 1 | # karma-chrome-launcher
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| 2 |
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| 3 | [](https://github.com/karma-runner/karma-chrome-launcher)
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| 4 | [](https://www.npmjs.com/package/karma-chrome-launcher) [](https://www.npmjs.com/package/karma-chrome-launcher)
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| 5 |
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| 6 | [](https://travis-ci.org/karma-runner/karma-chrome-launcher) [](https://david-dm.org/karma-runner/karma-chrome-launcher) [](https://david-dm.org/karma-runner/karma-chrome-launcher#info=devDependencies)
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| 7 |
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| 8 | > Launcher for Google Chrome, Google Chrome Canary and Google Chromium.
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| 9 |
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| 10 | ## Installation
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| 11 |
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| 12 | The easiest way is to keep `karma-chrome-launcher` as a devDependency in your `package.json`,
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| 13 | by running
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| 14 |
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| 15 | ```bash
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| 16 | $ npm i -D karma-chrome-launcher
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| 17 | ```
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| 18 |
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| 19 | ## Configuration
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| 20 |
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| 21 | ```js
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| 22 | // karma.conf.js
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| 23 | module.exports = function(config) {
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| 24 | config.set({
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| 25 | browsers: ['Chrome', 'Chrome_without_security'], // You may use 'ChromeCanary', 'Chromium' or any other supported browser
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| 26 |
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| 27 | // you can define custom flags
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| 28 | customLaunchers: {
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| 29 | Chrome_without_security: {
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| 30 | base: 'Chrome',
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| 31 | flags: ['--disable-web-security', '--disable-site-isolation-trials']
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| 32 | }
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| 33 | }
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| 34 | })
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| 35 | }
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| 36 | ```
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| 37 |
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| 38 | The `--user-data-dir` is set to a temporary directory but can be overridden on a custom launcher as shown below.
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| 39 | One reason to do this is to have a permanent Chrome user data directory inside the project directory to be able to
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| 40 | install plugins there (e.g. JetBrains IDE Support plugin).
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| 41 |
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| 42 | ```js
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| 43 | customLaunchers: {
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| 44 | Chrome_with_debugging: {
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| 45 | base: 'Chrome',
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| 46 | chromeDataDir: path.resolve(__dirname, '.chrome')
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| 47 | }
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| 48 | }
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| 49 | ```
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| 50 |
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| 51 | You can pass list of browsers as a CLI argument too:
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| 52 |
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| 53 | ```bash
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| 54 | $ karma start --browsers Chrome,Chrome_without_security
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| 55 | ```
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| 56 |
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| 57 | ## Headless Chromium with Puppeteer
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| 58 |
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| 59 | The Chrome DevTools team created [Puppeteer](https://github.com/GoogleChrome/puppeteer) - it will automatically install Chromium for all
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| 60 | platforms and contains everything you need to run it from within your CI.
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| 61 |
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| 62 | ### Available Browsers
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| 63 | *Note: Headless mode requires a browser version >= 59*
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| 64 |
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| 65 | - Chrome (CHROME_BIN)
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| 66 | - ChromeHeadless (CHROME_BIN)
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| 67 | - Chromium (CHROMIUM_BIN)
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| 68 | - ChromiumHeadless (CHROMIUM_BIN)
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| 69 | - ChromeCanary (CHROME_CANARY_BIN)
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| 70 | - ChromeCanaryHeadless (CHROME_CANARY_BIN)
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| 71 | - Dartium (DARTIUM_BIN)
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| 72 |
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| 73 | #### Usage
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| 74 | ```bash
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| 75 | $ npm i -D puppeteer karma-chrome-launcher
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| 76 | ```
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| 77 |
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| 78 | ```js
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| 79 | // karma.conf.js
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| 80 | process.env.CHROME_BIN = require('puppeteer').executablePath()
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| 81 |
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| 82 | module.exports = function(config) {
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| 83 | config.set({
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| 84 | browsers: ['ChromeHeadless']
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| 85 | })
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| 86 | }
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| 87 | ```
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| 88 |
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| 89 | ----
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| 90 |
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| 91 | For more information on Karma see the [homepage].
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| 92 |
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| 93 | [homepage]: http://karma-runner.github.com
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