goog_logger.cljs

(defn log [logger level fmt-msg & objs]
  (let [msg-obj (js/String. fmt-msg)]
    (aset msg-obj "fmt-objs" objs)
    (.log logger level msg-obj)))

(defn handler [log-record]
  (let [msg-obj (.getMessage log-record)
        objs (aget msg-obj "fmt-objs")
        log-fn (.-log js/console)]
    (.apply log-fn js/console msg-obj (to-array objs))))

(goog-log/addHandler logger handler)