app/modules/main/factories/mdtLodashFactory.js
(function(){
'use strict';
function mdtLodashFactory($window){
if(!$window._){
throw Error('Lodash does not found. Please make sure you load Lodash before any source for mdDataTable');
}
return $window._;
}
angular
.module('mdDataTable')
.factory('_', mdtLodashFactory);
}());