I know Elm is very controversial around these parts, but it's still one of the greatest languages/framework I've experienced (other was to prove programs using

I know Elm is very controversial around these parts, but it's still one of the greatest languages/framework I've experienced (other was to prove programs using Coq). In my experience, Elm provides the best midpoint between the power of more advanced level Functional Programming Languages and ease of Javascript. I recently trained my friend in India to be able to use it in two weeks (he has only Python/Java experience and comes from testing automation background). A lot of people complain about the community and the BDFL, but to me it still beats using Javascript (or Typescript) for a personal project. I don't have to worry about runtime bugs in the UI logic (all of them were in the js code in my ports). The other FP to-js language I've tried is ReasonML (now ReScript), which is also nice, but it aims to become a language which compiles to correct js code (i.e. in your head, you're still writing js code, but with a very good compiler preventing you from writing bad code). This approach has its own pros and cons. I am currently considering a very interesting approach for my next project. Elm for the UI code, and ReScript for ports (and I understand Elm would be a different flavored language and ReScript, different). Maybe its a crazy idea, maybe it won't work out, but still, I'll get to learn.