Object property wrapper

wrap.js

var Prototype = {
  
}

var Wrap = function () {
  var mappedAttributes = {};
	_.each(arguments, function (a) {
    if (a && a.length) {
      var i = 1
          k = a.substring(0, i);
      while (mappedAttributes.hasOwnProperty(k)) {
        k = a.substring(0, ++i);
      }

      mappedAttributes[k] = a;
    }
  });  
  
  var Wrapped = function (attributes) {
    this.attributes = attributes || {};
  };
  
  _.extend(Wrapped.prototype, Prototype, _.zipObject(_.map(mappedAttributes, function (long, short) {
    return [long, function (value) {
      if (_.isUndefined(value)) {
        return this.attributes[short];
      }
      this.attributes[short] = value;
      return this;
    }];
  })));
  
  
  return Wrapped;
}