Namespacing shim for ES5

Name.js

if (typeof(Name) === 'undefined') {
  (function(global) {
    "use strict";

    function defineNamespace(object, namespace) {
      var privates = Object.create(object), 
        base = object.valueOf;

      Object.defineProperty(object, 'valueOf', { 
        value: function valueOf(value) {
          if (value !== namespace || this !== object) {
            return base.apply(this, arguments);
          } else {
            return privates;
          }
      });

      return privates;
    }

    function Name() {
      var namespace = {};

      return function name(object) {
        var privates = object.valueOf(namespace);
        return privates !== object ? privates : defineNamespace(object, namespace);
      };
    }

    return global.Name = Name;
  })(this);
}