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Application Programming Interface (API)

Sample configuration object

Here you can find an up-to-date example of the configuration object: lib/default-config.js

Example

const selenium = require('selenium-standalone');

selenium.install({
  // check for more recent versions of selenium here:
  // https://selenium-release.storage.googleapis.com/index.html
  version: '3.141.59',
  baseURL: 'https://selenium-release.storage.googleapis.com',
  drivers: {
    chrome: {
      // check for more recent versions of chrome driver here:
      // https://chromedriver.storage.googleapis.com/index.html
      version: '87.0.4280.20',
      arch: process.arch,
      baseURL: 'https://chromedriver.storage.googleapis.com'
    },
    ie: {
      // check for more recent versions of internet explorer driver here:
      // https://selenium-release.storage.googleapis.com/index.html
      version: '3.150.0',
      arch: process.arch,
      baseURL: 'https://selenium-release.storage.googleapis.com'
    }
  },
  ignoreExtraDrivers: true,
  proxy: 'http://localproxy.com', // see https://www.npmjs.com/package/got#proxies
  requestOpts: { // see https://www.npmjs.com/package/got
    timeout: 10000
  },
  logger: function(message) {

  },
  progressCb: function(totalLength, progressLength, chunkLength) {

  }
}, cb);

selenium.install([opts,] cb)

opts.version selenium version to install.

opts.drivers map of drivers to download and install along with selenium standalone server.

The current defaults can be found in lib/default-config.js.

arch is either ia32 or x64, it's here because you might want to switch to a particular arch sometimes.

baseURL is used to find the server having the selenium or drivers files.

fullURL as an alternative to baseURL it's possible specify full url, ex https://selenium-release.storage.googleapis.com/4.0-alpha-7/selenium-server-4.0.0-alpha-7.jar.

opts.ignoreExtraDrivers only downloads and installs drivers explicity specified.

opts.basePath sets the base directory used to store the selenium standalone .jar and drivers. Defaults to current working directory + .selenium/

opts.progressCb(totalLength, progressLength, chunkLength) will be called if provided with raw bytes length numbers about the current download process. It is used by the command line to show a progress bar.

opts.logger will be called if provided with some debugging information about the installation process.

opts.requestOpts can be any valid got options object. You can use this for example to set a timeout.

cb(err) called when install finished or errored.

selenium.start([opts,] cb)

opts.version selenium version to install.

opts.drivers map of drivers to run along with selenium standalone server, same as selenium.install.

opts.ignoreExtraDrivers only loads and starts drivers explicity specified.

opts.basePath sets the base directory used to load the selenium standalone .jar and drivers, same as selenium.install.

By default all drivers are loaded, you only control and change the versions or archs.

opts.spawnOptions spawn options for the selenium server. Defaults to undefined

opts.javaArgs array of arguments for the JVM, included between java and -jar in the command line invocation. Use this option to set properties like -Xmx=512M or -Djava.util.logging.config.file=logging.properties, for instance. Defaults to [].

opts.seleniumArgs array of arguments for the selenium server, passed directly to child_process.spawn. Defaults to [].

opts.spawnCb will be called if provided as soon as the selenium child process was spawned. It may be interesting if you want to do some more debug.

opts.javaPath set the javaPath manually, otherwise we use [which](https://github.com/isaacs/node-which).sync('java').

opts.requestOpts can be any valid got options object. You can use this for example to set a timeout.

cb(err, child) called when the server is running and listening, child is the ChildProcess instance created.

So you can child.kill() when you are done.

Error: Another Selenium process is already running

If you're getting this error, it means that you didn't shut down the server successfully the last time you started it, so it's still running in the background. You can kill it by running:

pkill -f selenium-standalone