Does anyone use a socket REPL while developing Fulcro apps? Just wanna know how that works. Does CLJS support socket REPLs, if not, is it then running inside the clojure process of shadow-cljs. Feel free to ignore, or point me to any resources if I should have just RTFM'ed.

socket repl is supported yes. most people use nrepl though

:socket-repl {:port 12345} in shadow-cljs.edn

And does the socket REPL in the browser i.e is it a browser REPL?

I've been using Sean Corfield's Atom setup

And want to adapt the same for ClojureScript as well.

not sure what that setup is but the REPL always starts out as CLJ

but you can switch it to your build repl via (shadow/repl :the-build-id) or just (shadow/browser-repl) to get a browser REPL without a build