That's not exactly a fully supported toolset. There is another C# to js compiler http://projects.nikhilk.net/ScriptSharp http://projects.nikhilk.net/ScriptShar

That's not exactly a fully supported toolset. There is another C# to js compiler http://projects.nikhilk.net/ScriptSharp http://projects.nikhilk.net/ScriptSharp which is AFAICT another side project. If one of these were to stick - it would first need to be supported be a somewhat larger organization (ala apache foundation for java components, or google for GWT/Closure).