All of the core syntax is not currently there, but you're right that ClojureScript only interops with js and not Java. For a more detailed differences list see https://github.com/clojure/clojurescript/wiki/Differences-fr...

Bear in mind that the wording is very careful. We took great pains to say things like "not currently implemented." ;-)

"ClojureScript does not currently support regular expression literals using #"" "

This one seems like a big deal, given how often I find myself using regexes in clojure. Is it on its way and is there a workaround currently?

I'm sure you can use the native RegExp class:

    (def pat (RegExp. "Some(.+)"))

There you go:

https://github.com/clojure/clojurescript/commit/a201e9d8dec8...

No STM, that'll be interesting.

Ack no transients either! I know it's early but not gonna lie that one makes me sad. I love being able to write stupid fast list/map builder functions that bash inline but then return something nice and immutable.