So working on CLJS-2041... If I emit (f.IFn$blah || f)(the_arg) it somehow loses this context (sometimes). However (f.IFn$blah ? f.IFn$blah(the_arg) : f(the_arg)) works just fine. Just curious if there are any JS cracks that know why?

Welp, learnt some new JS:

(js* "(~{})(~{})"
     (.-cljs$core$IFn$_invoke$arity$1 :a)
     {:a 2})
;; => works

(js* "(~{} || 0)(~{})"
     (.-cljs$core$IFn$_invoke$arity$1 :a)
     {:a 2})
;; => null, loses this

sidenote - I would not change the codegen pattern here unless you have a really good reason

accessing a property will not preserve this

Yeah, not gonna change it, it was just an idea I wanted to try. Would've been nice, but probably even much slower.

@dnolen I'm guessing the gen-apply-to was pre IFn checks? https://github.com/clojure/clojurescript/commit/d43a350969b993d76671e78c27b8f791f1ff8d8d

Right now it'll double check the property with static-fns.

New patch submitted for 2041.