You can still use XState. I also know of these ones: • https://github.com/lucywang000/clj-statecharts • https://github.com/fulcrologic/statecharts

https://github.com/metosin/tilakone should also work with cljs

how would you decide whether to pick a cljs implementation or a more popular js lib?

I would expect a clojure one to better integrate with immutable data structures we use for everything and have convenient macros

idk, look at which one has the functionality and convenience most appealing to you