start app with socket PREPL

clj -J-Dclojure.server.browser="{:port 4444 :accept cljs.server.browser/prepl :launch-browser false}" -- --main cljs.main --watch "src" --compile cljs-2021.core

or socket REPL

clj -J-Dclojure.server.browser="{:port 4444 :accept cljs.server.browser/repl :launch-browser false}" -- --main cljs.main --watch "src" --compile cljs-2021.core

connect socket REPL with inf-clojure etc.

open browser with localhost:9000

start app with command line REPL

clj -M --main cljs.main --compile cljs-2021.core --repl