@fredrik245 the same as any other npm package. npm install it and then require it properly. https://shadow-cljs.github.io/docs/UsersGuide.html#npm reference the translation table to translate JS examples to CLJS

I'm having some trouble using clojure.spec on the repl

cljs.user=> (require '[clojure.spec.alpha :as s])
nil
cljs.user=> (require '[clojure.spec.gen.alpha :as gen])
nil
cljs.user=> (gen/generate (s/gen int?))

Execution error (Error) at (<cljs repl>:1).
Var clojure.test.check.generators/simple-type-printable does not exist, clojure.test.check.generators never required
:repl/exception!

Do what the error message tells you: require the namespace first

thanks @borkdude 🙂