code: function(config) {
  			if (config.env && typeof config.env === "object") {
  				return this.merge(this.createEnvironmentConfig(config.env), config);
  			}
  
  			return config;
  		}
docs: Given a config with environment settings, applies the globals and
  ecmaFeatures to the configuration and returns the result.
  @param {Object} config The configuration information.
  @returns {Object} The updated configuration information.