Breakpoint triggers in jQuery

breakpoints.js

/**
 *  Breakpoints
 */
/*global jQuery define*/
(function (factory) {
    if (typeof define === 'function' && define.amd) {
        define(['jquery'], factory);
    } else {
        factory(jQuery);
    }
}(function ($) {
	'use strict';

	var Breakpoints = function(element, breakpoints){
		this.$element = element;
		this.$breakpoints = breakpoints;
		this.$numberOfBreakpoints = this.$breakpoints.length;
		this.$element.on("resize", $.proxy(this.doResize, this));
	};

	Breakpoints.prototype = {
		$previous: null,
		doResize: function() {
			this.$width = this.$element.outerWidth();
			if (!this.$previous) this.$previous = this.$width;
			for (var i = 0; i < this.$numberOfBreakpoints; i++) {
				var point = this.$breakpoints[i];
				if (this.$width <= point && this.$previous > point ||
					this.$width > point && this.$previous < point) {
					this.triggerEnter(point);
				}
			}
			this.$previous = this.$width;
		},
		triggerEnter: function(breakpoint) {
			this.$direction = (this.$width > this.$previous) ? "expand" : "contract";
			this.$element.trigger("breakpoint", {direction: this.$direction, size: breakpoint});
		}
	};

	$.fn.breakpoints = function(breakpoints) {
		return this.each(function(){
			var $this = $(this),
				data = $this.data("breakpoints");
			if (!data) {
				$this.data("breakpoints", (data = new Breakpoints($this, breakpoints)));
			}
		});
	};

}));

breakpoints.min.js

/**
 *  Breakpoints
 */(function(e){typeof define=="function"&&define.amd?define(["jquery"],e):e(jQuery)})(function(e){"use strict";var t=function(t,n){this.$element=t,this.$breakpoints=n,this.$numberOfBreakpoints=this.$breakpoints.length,this.$element.on("resize",e.proxy(this.doResize,this))};t.prototype={$previous:null,doResize:function(){this.$width=this.$element.outerWidth(),this.$previous||(this.$previous=this.$width);for(var e=0;e<this.$numberOfBreakpoints;e++){var t=this.$breakpoints[e];(this.$width<=t&&this.$previous>t||this.$width>t&&this.$previous<t)&&this.triggerEnter(t)}this.$previous=this.$width},triggerEnter:function(e){this.$direction=this.$width>this.$previous?"expand":"contract",this.$element.trigger("breakpoint",{direction:this.$direction,size:e})}},e.fn.breakpoints=function(n){return this.each(function(){var r=e(this),i=r.data("breakpoints");i||r.data("breakpoints",i=new t(r,n))})}});