AngularJs timer with throttle plus valid jshinting

Timer.js

/*jshint bitwise:true, camelcase:true, curly:true, eqeqeq:true, forin:true, latedef:true, newcap:true, noarg:true,
 noempty:true, nonew:true, undef:true, unused:true, strict:true, browser:true, camelcase:false, unused: false */

/*globals
 $: false,
 app: false,
 angular: false,
 factory: false,
 UrlHelper: false,
 showFeedUrl: false,
 formatDate: false,
 _: false
 */

var TimerFactory = function ($rootScope) {
	"use strict";

	var DEFAULT_TIMEOUT = 1000;
	var timers = {};

	return {
		throttle: function (callback, timeout) {

			if (_.isEmpty(callback.name)) {
				throw new Error('The callback requires a name');
			}

			timeout = timeout || DEFAULT_TIMEOUT;

			clearTimeout(timers[callback.name]);

			timers[callback.name] = setTimeout(function () {
				callback();
			}, timeout);
		}
	};
};