karma-chrome-launcher

 

  

> Launcher for Google Chrome, Google Chrome Canary and Google Chromium.

Installation

The easiest way is to keep karma-chrome-launcher as a devDependency in your package.json,
by running

``bash
$ npm i -D karma-chrome-launcher
`

Configuration

`js
// karma.conf.js
module.exports = function(config) {
config.set({
browsers: ['Chrome', 'Chrome_without_security'], // You may use 'ChromeCanary', 'Chromium' or any other supported browser

// you can define custom flags
customLaunchers: {
Chrome_without_security: {
base: 'Chrome',
flags: ['--disable-web-security', '--disable-site-isolation-trials']
}
}
})
}
`

The --user-data-dir is set to a temporary directory but can be overridden on a custom launcher as shown below.
One reason to do this is to have a permanent Chrome user data directory inside the project directory to be able to
install plugins there (e.g. JetBrains IDE Support plugin).

`js
customLaunchers: {
Chrome_with_debugging: {
base: 'Chrome',
chromeDataDir: path.resolve(__dirname, '.chrome')
}
}
`

You can pass list of browsers as a CLI argument too:

`bash
$ karma start --browsers Chrome,Chrome_without_security
`

Headless Chromium with Puppeteer

The Chrome DevTools team created Puppeteer - it will automatically install Chromium for all
platforms and contains everything you need to run it from within your CI.

$3

#### Usage
`bash
$ npm i -D puppeteer karma-chrome-launcher
`

`js
// karma.conf.js
process.env.CHROME_BIN = require('puppeteer').executablePath()

module.exports = function(config) {
config.set({
browsers: ['ChromeHeadless']
})
}
``

----

For more information on Karma see the [homepage].

[homepage]: https://karma-runner.github.io