Ah, OK :). There is a command to open a specific socket repl for ClojureScript (on the browser, on nashorn, or node I think). Then you can connect to then, it's only a little limited in functionality. I'll look up these commands for you :)
(and also add then in the README too :D)
Okay, found it: you can start a ClojureScript socket REPL with the following command, for example:
clj -Sdeps '{:deps {org.clojure/clojurescript {:mvn/version "1.10.597"}}}' -J-Dclojure.server.browser="{:port 4444 :accept cljs.server.browser/repl}"
When you ask Chlorine to connect to port 4444, it'll start a browser and connect a REPL to it