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Description
Lumo v1.10.1.
Steps (based on https://dev.clojure.org/jira/browse/CLJS-2913?focusedCommentId=50751):
Execute in Lumo:
(require '[cljs.spec.alpha :as s])
(require '[cljs.spec.test.alpha :as st])
;; instrumenting a function
(s/fdef foobar :args (s/cat :x int?))
(defn foobar [x] x)
(st/instrument)
;; set up an example spec printer
(set! s/*explain-out* (fn [e-data] (println "SPEC ERROR!")))
(foobar "")
Actual:
Call to #'cljs.user/foobar did not conform to spec.
Expected:
Execution error - invalid arguments to user/foobar at (REPL:1).
SPEC ERROR!
See the related Planck issue https://github.com/planck-repl/planck/issues/845 which in turn follows https://dev.clojure.org/jira/browse/CLJS-2913.
Also this https://github.com/bhb/expound issue seems to be related (as the lib is based on setting s/*explain-out*): https://github.com/bhb/expound/issues/152.