{
  // (optional) remote debugging port number to use. If provided port is already busy, launch() will reject
  // Default: an available port is autoselected
  port: number;

  // (optional) Additional flags to pass to Chrome, for example: ['--headless', '--disable-gpu']
  // See: https://github.com/GoogleChrome/chrome-launcher/blob/master/docs/chrome-flags-for-tools.md
  // Do note, many flags are set by default: https://github.com/GoogleChrome/chrome-launcher/blob/master/flags.ts
  chromeFlags: Array<string>;

  // (optional) Close the Chrome process on `Ctrl-C`
  // Default: true
  handleSIGINT: boolean;

  // (optional) Explicit path of intended Chrome binary
  // * If this `chromePath` option is defined, it will be used.
  // * Otherwise, the `CHROME_PATH` env variable will be used if set. (`LIGHTHOUSE_CHROMIUM_PATH` is deprecated)
  // * Otherwise, a detected Chrome Canary will be used if found
  // * Otherwise, a detected Chrome (stable) will be used
  chromePath: string;

  // (optional) Chrome profile path to use, if set to `false` then the default profile will be used.
  // By default, a fresh Chrome profile will be created
  userDataDir: string | boolean;

  // (optional) Starting URL to open the browser with
  // Default: `about:blank`
  startingUrl: string;

  // (optional) Logging level: verbose, info, error, silent
  // Default: 'info'
  logLevel: string;

  // (optional) Enable extension loading
  // Default: false
  enableExtensions: boolean;

  // (optional) Interval in ms, which defines how often launcher checks browser port to be ready.
  // Default: 500
  connectionPollInterval: number;

  // (optional) A number of retries, before browser launch considered unsuccessful.
  // Default: 50
  maxConnectionRetries: number;

  // (optional) A dict of environmental key value pairs to pass to the spawned chrome process.
  envVars: {[key: string]: string};
};

// The remote debugging port exposed by the launched chrome
chrome.port: number;

// Method to kill Chrome (and cleanup the profile folder)
chrome.kill: () => Promise<{}>;

// The process id
chrome.pid: number;

// The childProcess object for the launched Chrome
chrome.process: childProcess

const chromeLauncher = require('chrome-launcher');

chromeLauncher.launch({
  startingUrl: 'https://google.com'
}).then(chrome => {
  console.log(`Chrome debugging port running on ${chrome.port}`);
});

const chromeLauncher = require('chrome-launcher');

chromeLauncher.launch({
  startingUrl: 'https://google.com',
  chromeFlags: ['--headless', '--disable-gpu']
}).then(chrome => {
  console.log(`Chrome debugging port running on ${chrome.port}`);
});