define(function() {
    // IE: WH-2284
    if (!String.prototype.endsWith) {
        String.prototype.endsWith = function (search, this_len) {
            if (this_len === undefined || this_len > this.length) {
                this_len = this.length;
            }
            return this.substring(this_len - search.length, this_len) === search;
        };
    }
});