text: (function() {
  
    // MDN .bind() Polyfill
    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind#Polyfill
    if (!Function.prototype.bind) {
      Function.prototype.bind = function(oThis) {
        if (typeof this !== 'function') {
          // closest thing possible to the ECMAScript 5
          // internal IsCallable function
          throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
        }
  
        var aArgs = Array.prototype.slice.call(arguments, 1),
            fToBind = this,
            fNOP = function() {},
            fBound = function() {
              return fToBind.apply(this instanceof fNOP && oThis
                     ? this
                     : oThis,
                     aArgs.concat(Array.prototype.slice.call(arguments)));
            };
  
        fNOP.prototype = this.prototype;
        fBound.prototype = new fNOP();
  
        return fBound;
      };
    }
  
  }());