Dynamic Backbone models

gistfile1.js

define([
	'backbone',
	'models/export/YouTubeExport',
	'models/export/ImgurExport'
], function (
	Backbone,
	YouTubeExport,
	ImgurExport
) {
	'use strict';

	var ExportModelWrapper = function(options){
		var targets = {
			youtube: YouTubeExport,
			imgur: ImgurExport
		};
	
		var target = targets[ options.target ].prototype;

		var ExportModel = target.constructor.extend({

			constructor: function (options) {
				target.constructor.apply(this, arguments);
				targets = null;
			}
		});

		return ExportModel;
	} 
 
	return ExportModelWrapper;
});