Instance.box should have the DontEnum attribute.

diff --git a/ObjectiveC/Library.mm b/ObjectiveC/Library.mm
index 81cc3a21ed77d69db0db46ab2343c840739e325c..742e3ef481e0b9857b012a17cb210ca9a3c80827 100644 (file)
--- a/ObjectiveC/Library.mm
+++ b/ObjectiveC/Library.mm
@@ -2976,7 +2976,7 @@ void CYObjectiveC_SetupContext(JSContextRef context) { CYPoolTry {
     CYSetProperty(context, cycript, CYJSString("objc_super"), Super);
 
     JSObjectRef box(JSObjectMakeFunctionWithCallback(context, CYJSString("box"), &Instance_box_callAsFunction));
-    CYSetProperty(context, Instance, CYJSString("box"), box);
+    CYSetProperty(context, Instance, CYJSString("box"), box, kJSPropertyAttributeDontEnum);
 
 #ifdef __APPLE__
     CYSetProperty(context, all, CYJSString("choose"), &choose, kJSPropertyAttributeDontEnum);