Is do-all needed in this case to force all the calls to update?

update.cljs

(defn update-state 
  "Update each entity if it has an update fn."
  [event world-state]
  (update-in world-state [:entities]
             #(doall (map (fn [ent]
                            (if-let [update (:update ent)]
                              (update event world-state ent)
                              ent))
                          %))))