Minor refactor of define-once macro.

frontend/uxbox/ui/workspace/base.cljs

@@ -89,7 +89,7 @@
        (rx/buffer 2 1)
        (rx/map coords-delta)))
 
-(define-once
+(define-once :mouse-subscriptions
   (as-> mouse-delta-s $
     (rx/filter #(deref shapes-dragging?) $)
     (rx/on-value $ (fn [delta]
@@ -114,7 +114,7 @@
      :width (- current-x start-x)
      :height (- current-y start-y)}))
 
-(define-once
+(define-once :selrect-subscriptions
   (let [ss (as-> (rx/from-atom selrect-dragging?) $
              (rx/dedupe $)
              (rx/merge $ (rx/of false))

frontend/uxbox/ui/workspace/shortcuts.cljs

@@ -47,7 +47,7 @@
         (events/unlistenByKey key)
         (.clearKeyListener handler)))))
 
-(define-once
+(define-once :subscriptions
   (rx/on-value +stream+ #(println "[debug]: shortcut:" %))
   (rx/on-value +stream+ (fn [event]
                           (when-let [handler (get +shortcuts+ event)]

frontend/uxbox/util/syntax.cljc

@@ -2,8 +2,7 @@
   (:refer-clojure :exclude [defonce]))
 
 (defmacro define-once
-  [& body]
+  [name' & body]
-  (let [sym (gensym "uxbox-")]
+  (let [sym (symbol (str (namespace name') "-" (name name')))]
     `(cljs.core/defonce ~sym
-       (do ~@body
+       (do ~@body nil))))
-           nil))))