Warning for CIDER users who use cider-jack-in-clojurescript and define cider-cljs-lein-repl in a .dir-locals.el file: I just spent way too long beating my head against this bug: https://github.com/clojure-emacs/cider/issues/1938 For now, you can move cider-cljs-lein-repl into your .spacemacs, or call it at runtime, or manually apply the patch.

(or wait until the fix is merged before updating CIDER)