code: function reverse() {
      /* jshint validthis:true */
      var _ = this._sortedArray,
          reversed = _.reversed;
  
      if (reversed) {
          this.comparator = this.comparator.original;
      } else {
          this.comparator = getInversionOf(this.comparator);
      }
      _.reversed = !reversed;
  
      _.reverse.call(this);
  }
docs: Works like Array.prototype.reverse.
  
  Please note that this function wraps the current arr.comparator in order to invert the result. Reverting it back
  removes the wrapper.
  
  Same signature as Array.prototype.reverse
  @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse