Why CIDER's REPL some times start as "shadow.user>" and in others it starts as "cljs.user>"?

Question

I am using Clojure, ClojureScript, shadow-cljs, Emacs, Cider, and Lein to develop a web app project.

Sometimes, I start a project and see as the top-level in the REPL:

shadow.user>

In other times, I see:

cljs.user>

I believe the names indicate the namespace been used.

But, why are different start-ups happening? What do the different names imply (beyond the namespace)?

My expectation was that I would have the same namespace on every startup of the REPL.

Answer 1

shadow.user> is generated after executing cider-jack-in-clj . And cljs.user> is generated after executing cider-jack-in-cljs .

The s at the end of the command's name is subtle but crucial. I can't say much about the implications.