How to use the chimp.host function in chimp

Chimp.prototype._createProcesses = function () {

  var processes = [];

  if (this.options.browser === 'phantomjs') {
    process.env['chimp.host'] = this.options.host = 'localhost';
    var phantom = new exports.Phantom(this.options);
    processes.push(phantom);
  } else if (booleanHelper.isFalsey(this.options.host)) {
    process.env['chimp.host'] = this.options.host = 'localhost';
    var selenium = new exports.Selenium(this.options);
    processes.push(selenium);
  }

  if (booleanHelper.isTruthy(this.options.mocha)) {
    var mocha = new exports.Mocha(this.options);
    processes.push(mocha);
  } else {
    if (booleanHelper.isTruthy(this.options.criticalSteps)) {
      // domain scenarios
      if (booleanHelper.isTruthy(this.options.domainSteps)) {
        var _options = JSON.parse((0, _stringify2.default)(this.options));
        if (_options.r) {
          _options.r = _.isArray(_options.r) ? _options.r : [_options.r];
        } else {
          _options.r = [];

return booleanHelper.isFalsey(self.options.host);
  };

  const userHasProvidedBrowser = function() {
    return booleanHelper.isTruthy(self.options.browser);
  };

  if (!this.options.domainOnly) {
    if (this.options.browser === 'phantomjs') {
      process.env['chimp.host'] = this.options.host = 'localhost';
      var phantom = new exports.Phantom(this.options);
      processes.push(phantom);
    }

    else if (userHasProvidedBrowser() && userHasNotProvidedSeleniumHost()) {
      process.env['chimp.host'] = this.options.host = 'localhost';
      var selenium = new exports.Selenium(this.options);
      processes.push(selenium);
    }

    else if (userHasNotProvidedSeleniumHost()) {
      // rewrite the browser to be chrome since "chromedriver" is not a valid browser
      process.env['chimp.browser'] = this.options.browser = 'chrome';
      process.env['chimp.host'] = this.options.host = 'localhost';
      var chromedriver = new exports.Chromedriver(this.options);
      processes.push(chromedriver);
    }
  }

  if (booleanHelper.isTruthy(this.options.mocha)) {
    var mocha = new exports.Mocha(this.options);
    processes.push(mocha);

return;
      }

      if (self.options.seleniumDebug) {
        processHelper.logOutputs('selenium', self.child);
      }

      process.on('exit', function () {
        log.debug('[chimp][selenium] process exit event detected. Stopping process');
        self.stop(function () {
          log.debug('[chimp][selenium] process exit event stop complete');
        });
      });

      self.sessionManager = new SessionManager({
        host: process.env['chimp.host'],
        port: process.env['chimp.port'],
        browser: process.env['chimp.browser'],
        deviceName: process.env['chimp.deviceName']
      });

      callback(null);
    });
  });

var setupBrowser = function setupBrowser() {
      log.debug('[chimp][helper] getting browser');

      var webdriverioConfigOptions = JSON.parse(process.env['chimp.webdriverio']);
      var webdriverioOptions = (0, _deepExtend2.default)(webdriverioConfigOptions, {
        desiredCapabilities: {
          browserName: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.browser']),
          platform: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.platform']),
          name: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.name']),
          version: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.version']),
          deviceName: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.deviceName'])
        },
        user: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.user'] || process.env.SAUCE_USERNAME),
        key: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.key'] || process.env.SAUCE_ACCESS_KEY),
        host: (0, _environmentVariableParsers.parseNullableString)(process.env['chimp.host']),
        port: (0, _environmentVariableParsers.parseNullableInteger)(process.env['chimp.port']),
        logLevel: booleanHelper.isTruthy(process.env['chimp.debug']) ? 'verbose' : webdriverioConfigOptions.logLevel,
        sync: (0, _environmentVariableParsers.parseBoolean)(process.env['chimp.sync'])
      });

      global.sessionManager = new SessionFactory((0, _assign2.default)(_.pick(webdriverioOptions, 'host', 'port', 'user', 'key'), {
        browser: webdriverioOptions.desiredCapabilities.browserName,
        deviceName: webdriverioOptions.desiredCapabilities.deviceName
      }));

      if (booleanHelper.isTruthy(process.env['chimp.watch'])) {
        webdriverioOptions.desiredCapabilities.applicationCacheEnabled = false;
      }

      log.debug('[chimp][helper] webdriverioOptions are ', (0, _stringify2.default)(webdriverioOptions));
      var remoteSession = void 0;

log.debug('[chimp][helper] getting browser');

      const webdriverioConfigOptions = JSON.parse(process.env['chimp.webdriverio']);
      const webdriverioOptions = merge(
        webdriverioConfigOptions,
        {
          desiredCapabilities: {
            browserName: parseNullableString(process.env['chimp.browser']),
            platform: parseNullableString(process.env['chimp.platform']),
            name: parseNullableString(process.env['chimp.name']),
            version: parseNullableString(process.env['chimp.browserVersion']),
            deviceName: parseNullableString(process.env['chimp.deviceName']),
          },
          user: parseNullableString(process.env['chimp.user'] || process.env.SAUCE_USERNAME),
          key: parseNullableString(process.env['chimp.key'] || process.env.SAUCE_ACCESS_KEY),
          host: parseNullableString(process.env['chimp.host']),
          port: parseNullableInteger(process.env['chimp.port']),
          logLevel: booleanHelper.isTruthy(process.env['chimp.debug']) ?
            'verbose' : webdriverioConfigOptions.logLevel,
          sync: parseBoolean(process.env['chimp.sync']),
        }
      );

      global.sessionManager = new SessionFactory(Object.assign(
        _.pick(webdriverioOptions, 'host', 'port', 'user', 'key'),
        {
          browser: webdriverioOptions.desiredCapabilities.browserName,
          deviceName: webdriverioOptions.desiredCapabilities.deviceName,
        }
      ));

      if (booleanHelper.isTruthy(process.env['chimp.watch'])) {

return;
      }

      if (self.options.seleniumDebug) {
        processHelper.logOutputs('selenium', self.child);
      }

      process.on('exit', function () {
        log.debug('[chimp][selenium] process exit event detected. Stopping process');
        self.stop(function () {
          log.debug('[chimp][selenium] process exit event stop complete');
        });
      });

      self.sessionManager = new SessionManager({
        host: process.env['chimp.host'],
        port: process.env['chimp.port'],
        browser: process.env['chimp.browser'],
        deviceName: process.env['chimp.deviceName']
      });

      callback(null);
    });
  });