Is there some library to help me to write Javascript code in C#?

I'm looking for something to help me to write C# code that would be automatically converted to javascript. The advantage would be code-completion and type-safety.

Some features that I'm looking for are the following:

• Auto cr开发者_JS百科eation of prototype equivalents to C# classes.
• Auto generation of javascript code based on C# code (property settings, method calls...)
• Exposition of Javascript types such as Window, Document and etc.

Is there something like that out there?

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You're looking for Script#.