treasure.js

(function(n,c){
  if (c[n] === void 0) {

    c[n] = function () {
      c[n].clients.push(this);
      this._init = [Array.prototype.slice.call(arguments)];
    };
    c[n].clients = [];

    var action = function(method){
      return function () {
        this['_'+method] = this['_'+method] || [];
        this['_'+method].push(Array.prototype.slice.call(arguments));
        return this;
      };
    };

    var methods = ['addRecord', 'set', 'trackEvent', 'trackPageview', 'ready'];
    for (var i = 0; i < methods.length; i++){
      var method = methods[i];
      c[n].prototype[method] = action(method);
    }

    var s = document.createElement('script');
    s.type = 'text/javascript';
    s.async = !0;
    s.src = ('https:' === document.location.protocol ? 'https:' : 'http:') + '//s3.amazonaws.com/td-cdn/sdk/td-1.2.0.js';

    var t = document.getElementsByTagName('script')[0];
    t.parentNode.insertBefore(s,t);
  }
})('Treasure', window);