* add js/isNaN test

Author: swannodette

src/test/clojure/cljs/externs_infer_tests.clj

@@ -164,6 +164,11 @@
                 (analyze (ana/empty-env) '(let [x js/Number]
                                             (.isNaN x 1)))))
           :tag)))
+  (is (= 'js/Boolean
+        (-> (binding [ana/*cljs-ns* ana/*cljs-ns*]
+             (env/with-compiler-env (env/default-compiler-env)
+               (analyze (ana/empty-env) '(js/isNaN 1))))
+          :tag)))
   (is (= 'js/Promise
         (-> (binding [ana/*cljs-ns* ana/*cljs-ns*]
               (env/with-compiler-env (env/default-compiler-env)