output result in an element, not on the console.

clj/clarity/cljs/clarity.cljs

(defn typed-input [{:keys [type data]} owner]
  (reify
    om/IWillUpdate
    (will-update [_ p s] (prn (:data p) s))
    om/IRender
    (render [_]
      (om/build make-typed-input data {:opts {:type type}}))))
      (dom/div nil
        (om/build make-typed-input data {:opts {:type type}})
        (dom/pre nil (pr-str data))))))
(om/root app-state typed-input (.getElementById js/document "typed_input"))