A class should be a kind_of its singleton_class (fixes #438)

adambeynon · adambeynon · commit 5ba458fc7fe6 · 2013-11-15T18:59:27.000Z
diff --git a/opal/core/runtime.js b/opal/core/runtime.js
@@ -603,6 +603,10 @@
   };
 
   Opal.is_a = function(object, klass) {
+    if (object.__meta__ === klass) {
+      return true;
+    }
+
     var search = object._klass;
 
     while (search) {
