CLJS-2727: cljs.repl/err-out visible from cljs

Author: mfikes

src/main/clojure/cljs/cli.clj

@@ -409,7 +409,7 @@ present"
 (defn watch-proc [cenv path opts]
   (let [log-file (io/file (util/output-directory opts) "watch.log")]
     (util/mkdirs log-file)
-    (repl/err-out (println "Watch compilation log available at:" (str log-file)))
+    (#'repl/err-out (println "Watch compilation log available at:" (str log-file)))
     (let [log-out (FileWriter. log-file)]
       (binding [*err* log-out
                 *out* log-out]

src/main/clojure/cljs/repl.cljc

@@ -42,7 +42,7 @@
     :reader :repl-requires :repl-verbose :source-map-inline :watch :watch-fn
     :wrap})
 
-(defmacro err-out [& body]
+(defmacro ^:private err-out [& body]
   `(binding [*out* *err*]
      ~@body))