Roslyn features open source C# and Visual Basic compilers offering code analysis APIs. DuoCode is another tool for compiling to JavaScript without actually writing JavaScript.

Fortunately for C# programmers, the Mono Project is working on two different approaches to support WebAssembly. The first approach utilizes the Mono IL interpreter to run managed code (like C#) at ...

I can't reuse C# objects in TypeScript, of course, but it would be great if I could just copy and paste my C# class from into my TypeScript code. Which is exactly what TypeScriptSyntaxPaste does.