Change eval-supporting atoms to volatiles

planck-cljs/src/planck/repl.cljs

@@ -1687,23 +1687,23 @@
               (process-execute-source source-text expression-form opts))))))))
 
 
-;; The following atoms and fns set up a scheme to
+;; The following volatiles and fns set up a scheme to
 ;; emit function values into JavaScript as numeric
 ;; references that are looked up.
 
-(defonce ^:private fn-index (atom 0))
-(defonce ^:private fn-refs (atom {}))
+(defonce ^:private fn-index (volatile! 0))
+(defonce ^:private fn-refs (volatile! {}))
 
 (defn- clear-fns!
   "Clears saved functions."
   []
-  (reset! fn-refs {}))
+  (vreset! fn-refs {}))
 
 (defn- put-fn
   "Saves a function, returning a numeric representation."
   [f]
-  (let [n (swap! fn-index inc)]
-    (swap! fn-refs assoc n f)
+  (let [n (vswap! fn-index inc)]
+    (vswap! fn-refs assoc n f)
     n))
 
 (defn- get-fn