Don't catch exceptions in render

src/reagent/impl/util.cljs

@@ -107,24 +107,23 @@
 (defn clear-container [node]
   ;; If render throws, React may get confused, and throw on
   ;; unmount as well, so try to force React to start over.
-  (try
-    (.! node :innerHTML "")
-    (catch :default e
-      (do (warn "Error unmounting:")
-          (log e)))))
+  (some-> node
+          (.! :innerHTML "")))
 
 (defn render-component [comp container callback]
+  (let [rendered (volatile! nil)]
     (try
       (binding [*always-update* true]
-      (.' js/React render (comp) container
+        (->> (.' js/React render (comp) container
                  (fn []
                    (binding [*always-update* false]
                      (swap! roots assoc container [comp container])
                      (if (some? callback)
-                (callback))))))
-    (catch :default e
-      (do (clear-container container)
-          (throw e)))))
+                       (callback)))))
+             (vreset! rendered)))
+      (finally
+        (when-not @rendered
+          (clear-container container))))))
 
 (defn re-render-component [comp container]
   (render-component comp container nil))