A way to have better function output using pr-str

pr-opts.cljs

;; Using defonce, because in a reloaded workflow, only want this to run once
;; Changes the default printing of the javascript source code of a function to just the function name.
;; Changes instances of dollar sign to dot, and underscores to hyphens.
;; cljs$core$pr_str would be cljs.core.pr-str instead
(defonce
  ugly-pr-opts-hack
  (set!
   cljs.core/pr-opts
   (let [old-pr-opts (cljs.core/pr-opts) ]
     (fn []         
       (assoc
        old-pr-opts
        :alt-impl
        (fn [obj writer opts]      
          (if (goog/isFunction obj)
            (-write writer (-> (.-name obj)
                               (string/replace #"[$]" ".")
                               (string/replace #"[_]" "-")))
            (cljs.core/pr-writer-impl obj writer opts)))))
     )
   ))