Hello Next.js champs and nerds.

I've got a clinet that wants a forum. And I've been looking around a lot for open source typescript alternatives to discourse. But it seems like there aren't any? Have I missed something? Shouldn't there be a decent alternative to get a backend typescript forum up and running with next.js? Why haven't someone built it yet?

Any ideas or suggestions here? I really dont want to use discourse (rubyonrails + alpine.js).