public static object New(this IExpando scope, string functionName, params object[] args)
{
var constructor = (IExpando)scope.GetValue(functionName);
var proto = constructor.GetValue("prototype");
var obj = (IExpando)scope.GetValue("Object");
var instance = (IExpando)obj.Invoke("create", new object[] { proto });
Call(constructor, instance, args);
return(instance);
}