I am a huge fan of Saltarelle [1], which has the save level of support as this project. The only thing it seems to be lacking is proper source mapping abilities

I am a huge fan of Saltarelle [1], which has the save level of support as this project. The only thing it seems to be lacking is proper source mapping abilities, which is currently in a dev branch. It also has many libraries already built, like JQuery or AngularJS. However, full support from Microsoft makes it much more realistic to bring in to a production environment. As a C# developer, this will be something to keep an eye on. Edit: After reading more, this does not seem to be a Microsoft project. [1] http://www.saltarelle-compiler.com http://www.saltarelle-compiler.com