What to do with CLJS *print-fn*?

[borkdude]

In CLJS *print-fn* is used rather than binding *out* for controlling output. Currently there is no good way to do (sci/binding [sci/out *out*] (eval-string "(println :foo)")) in CLJS. Maybe we should rather use something like sci/*print-fn* for this.

In normal CLJS, *out* doesn't work like in Clojure:

cljs.user=> (binding [*out* sb] (println :hello))
:hello
nil

but rather you should bind or set print-fn:

cljs.user=> (binding [*print-fn* #(.log js/console ">" %)] (println :hello))
> :hello
nil

So in CLJS it would make sense to expose sci/print-fn which can be bound to a print function which influences how println etc work.

[borkdude]

A first cut has been made in nbb itself: babashka/nbb@a0fd4a0