This might sound familiar to you, the idea of writing an Object Oriented code, that allow compile-time checking, and good code design, that is then compiled into a script code was introduced by Macromedia at 2003 with Flash 7 and it’s shiny new Actionscript 2.0, but, AS2, with all the respect is not as complete as C#.
Script# does the same for Javascript, it lets you leverage the power of C# with it’s Object Oriented abilities and compile it into a clean and readable Javascript.
The new Script# version 0.2.0.0 now have added support for WPF/E.
There is a similar OS tool named Google Web Toolkit that appearntly does similar things for Java and Javascript.