Noteworthy Changes Spec instrumentation (cljs.spec.test.alpha/instrument and related functionality) no longer requires test.check. If you use cljs.spec.test.alpha/check, the data generation functionality of test.check is needed; in that case you need to require the clojure.test.check and clojure.test.check.properties namespaces. Keywords used in the cljs.spec.test.alpha/check API pertaining to Spec’s use of test.check are now qualified with clojure.spec.test.check, thus aligning with Clojur...
