Running cljs.main with just --repl doesn't preload whatever is on :preloads.
Given that the quickest way of trying ClojureScript is by running a command like :
clj -Sdeps '{:deps {org.clojure/clojurescript {:mvn/version "1.12.134"}}}}' -M -m cljs.main --repl
it would be great (and I think expected) to be able to run a repl with some dev tooling, like :
clj -Sdeps '{:deps {org.clojure/clojurescript {:mvn/version "1.12.134"} binaryage/devtools {:mvn/version "1.0.7"}}}}' -M -m cljs.main -co '{:preloads [devtools.preload]}' --repl
but it doesn't work.
It reads the file (it complains if you misspell the preload namespace) but then nothing gets loaded.
The problem seems to be related to ClojureScript not compiling the preload namespace when you run with just --repl
If you create a small single file project (like on the start guide) and then do :
clj -Sdeps '{:deps {org.clojure/clojurescript {:mvn/version "1.12.134"} binaryage/devtools {:mvn/version "1.0.7"}}}}' -M -m cljs.main -co '{:preloads [devtools.preload]}' --compile hello-world.core --repl
it works.
After the compile generates the out folder you can run just with --repl and the preload will work.