part-1-step-1.js

var exports = module.exports = {};
var webdriver = require('selenium-webdriver'),
  chrome = require('selenium-webdriver/chrome'),
  fs = require('fs');

  var options = new chrome.Options();
  var logging_prefs = new webdriver.logging.Preferences();
  
  logging_prefs.setLevel(webdriver.logging.Type.PERFORMANCE,
                         webdriver.logging.Type.SERVER,
                         webdriver.logging.Level.ALL);
  options.setLoggingPrefs(logging_prefs);
  ...