The docstrings for cljs.core/long and cljs.core/unchecked-long say: "Coerce to long by stripping decimal places. Identical to `int'." However, their implementation and behavior differs from cljs.core/int. Some examples:
unchecked-long's implementation is identical to long's so the results are the same. The solution I propose is to just drop the claim about identicalness.
ClojureScript 1.10.520, Node 11.10.0