CCACHE-42 "Porting core.cache to ClojureScript" was declined for infeasibility in 2018, but the JavaScript situation has improved since then. WeakRef has spread to all MDN-tracked environments except Opera.
Lack of a ClojureScript port of data.priority-map (used by 2 cache types) is another challenge noted by CCACHE-42. An issue for a cljc port of data.priority-map is currently open: DPRIMAP-8.
As more data processing moves into browsers and Node.js, core.cache is one of the rare Clojure gems that is still pinned to the JVM.
Since a cljc port of core.cache is not as infeasible as it used to be (and to formalize an interest in DPRIMAP-8), may we reopen CCACHE-42?