better safer solution to reading result of ns form that returns js

sidecar/src/figwheel_sidecar/components/figwheel_server.clj

@@ -39,13 +39,11 @@
 
 (defn read-msg [data]
   (try
-    (let [msg
-          (binding [*read-eval* false
-                    *default-data-reader-fn* (fn [tag res] res)]
-            (read-string data))]
+    (let [msg (edn/read-string {:readers {'js identity 'object identity}} data)]
       (if (and (map? msg) (:figwheel-event msg)) msg {}))
     (catch Exception e
       (println "Figwheel: message from client couldn't be read!")
+      (println (Throwable->map e))
       {})))
 
 (defn validate-file-selected-msg [{:keys [file-name file-line file-column] :as msg}]