How to get the browser port from Skywalker client

How can I get the Chrome port number from skywalker client?

var client = Skywalker.init({
  browserName: 'chrome',

The reason I need this port is to avoid having to launch chrome like the following

var chromeLauncher = require('lighthouse/chrome-launcher/chrome-launcher');
chromeLauncher.launch().then(function(chrome) {
  var port = chrome.port;
  // do something with this chrome connection

Using the following port 56633 from the skywalker client works:

 goog:chromeOptions: { ... }
 debuggerAddress: localhost:56633