Eliminate checked ifs in TransientArrayMap

Question

{{TransientArrayMap}} has checked ifs in it surrounding its {{editable?}} field that can be eliminated if hinted:


cljs.user=> (set! *print-fn-bodies* true)
true
cljs.user=> (.. TransientArrayMap -prototype -cljs$core$ICounted$_count$arity$1)
#object[Function "function (a){if(cljs.core.truth_(this.editable_QMARK_))return cljs.core.quot(this.len,2);throw Error("count after persistent!");}"]


Note that {{TransientHashMap}} already has such a hint.

Answer 1

Comment made by: mfikes

CLJS-3107.patch passes CI (/)

Answer 2

Comment made by: mfikes

CLJS-3107.patch added to Patch Tender (i)

Answer 3

Comment made by: mfikes

CLJS-3107.patch passes Canary (/)

Answer 4

Reference: https://clojure.atlassian.net/browse/CLJS-3107 (reported by mfikes)