in cljs REPL(boot project), start via adzerk.boot-cljs-repl/start-repl, when I use a exists var, it will print a warning message for Use of undeclared var. at this moment, the auto complete for CLJS is not work. If I reload the buffer with C-c C-k, everything goes well.

I’m using prelude. Recently, autocomplete has stopped working well for me; specifically it completes with symbols it has seen before, but I can’t get it to try and complete new symbols. Also matching input is required womp 😕

fwiw, clj-refactor is pretty close to @stuartsierra's https://stuartsierra.com/2016/clojure-how-to-ns.html

Only thing I do differently is I separate by a blank line references to namespaces within the project and namespaces from dependencies. Just looks nicer to me.