Get the Clojurescript repl/connect to not compile when in production?

Question

In my clojurescript code I have the following:

(defn onload [] (repl/connect "http://localhost:9000/repl"))

(set! (.-onload js/window) onload)

The Clojurescript repl is very useful in development, but I am hesitant to leave it in the code during production. What is the cleanest way to have the above code present during development (simple compilation), but absent during production (advanced compilation)?

Answer 1

The modern-cljs tutorial actually describes exactly how to solve this here.

Hope that helps!

Answer 2

Unfortunately there aren't currently any well defined ways to do conditional compilation in ClojureScript.

You could add configuration variables to control whether to start a REPL in a variety of ways, but one quick and easy way would be to get the hostname of the current page, and only invoke repl/connnect if it was "localhost" or whatever other domains you're using for development work.

Answer 3

I think a combination of lein2 profiles and cljsbuild src-paths munging can do the trick. eg, create a namespace that simply loads your repl, and exclude it with a profile run for the final compile (possibly might need to create a dummy namespace in another src-path directory).