Implement F# libraries for consumption by TypeScript/Javascript?

Question

I know there are a number of projects which can compile F# to JavaScript. Does any of these projects support this use case:

• developing an application in TypeScript
• but writing part of the application in F#, as a library
• consuming this F# library from the main TypeScript application, optimally in a type-safe way?

Answer 1

WebSharper produces d.ts files for the compiled JS files. You can read about this in the relevant section of the documentation. However this feature is still experimental and uses an older version of TypeScript.

Answer 2

There is FunScript (https://github.com/ZachBray/FunScript) but it does not seem to be widespread, so it may take you more time than the benefits are.