It would be a good thing to move {{cljs.repl/special-doc-map}} and {{cljs.repl/repl-special-doc-map}} to a place that is also accessible to self-host environments.
At the moment both Planck and Lumo just copy them in their code base. This is error prone and requires manual maintenance, together with being a bit hard to handle in downstream tooling - the tool now needs to know the three places where the maps are placed.
I can provide a patch so I am going to ask a) if my proposal makes sense b) what is the best way to shared them between the clj and cljs world.