main.js

        Array.prototype.byCount = function () {
            var L = this.length, o = {};
            for (var i = 0; i < L; i++) {
                var itm = this[i];
                if (!itm) {
                    continue
                }

                if (o[itm] === undefined) {
                    o[itm] = 1
                } else {
                    ++o[itm]
                }
            }

            var keys = Object.keys(o);

            return keys.sort(function (a, b) {
                if (o[b] !== o[a]) {
                    return o[b] - o[a];
                }
                return a.charCodeAt(0) - b.charCodeAt(0);
            });
        };