text: 'use strict';
  
  var browsers = require('socket.io-browsers');
  
  var zuulConfig = module.exports = {
    ui: 'mocha-bdd',
  
    // test on localhost by default
    local: true,
  
    concurrency: 2, // ngrok only accepts two tunnels by default
    // if browser does not sends output in 120s since last output:
    // stop testing, something is wrong
    browser_output_timeout: 120 * 1000,
    browser_open_timeout: 60 * 4 * 1000,
    // we want to be notified something is wrong asap, so no retry
    browser_retries: 1,
  
    server: './test/support/server.js',
    builder: 'zuul-builder-webpack',
    webpack: require('./support/webpack.config.dev.js')
  };
  
  if (process.env.CI === 'true') {
    zuulConfig.local = false;
    zuulConfig.tunnel = {
      type: 'ngrok',
      bind_tls: true
    };
  }
  
  var isPullRequest = process.env.TRAVIS_PULL_REQUEST && process.env.TRAVIS_PULL_REQUEST !== 'false';
  zuulConfig.browsers = isPullRequest ? browsers.pullRequest : browsers.all;
  