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It will turn into a hell because JavaScript lacks Haskell's strong type system. The tooling will not give you early warning if you pass a plain function into a construct that expects a promise etc.

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That's very true. But on the other hand dynamic typing is what enables us to play with JavaScript and re-create many concepts from FP in plain JS. This is not easy in many strongly typed languages which their type system falls short of Haskell's (that supports ADTs, kinds, recursive types, etc.).

Yes, dynamic typing allows experimentation. But just because you can make JS look like Haskell doesn't mean it's the most effective way to get stuff done. You'd be better off writing Haskell and transpiling it, IMO.

Note that I'm talking about writing an entire application in this style, not just sprinkling categories here and there.

I'm a static types kindaguy. So I've rewritten some of this code using Typescript to see what that looks like.

https://github.com/joost-de-vries/typescript-ramda/blob/mast...

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