fix: avoid breaking avoriaz edge case

vuejs · Feb 8, 2019 · 9011b83 · 9011b83
1 parent 8a80086
commit 9011b83
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/core/vdom/helpers/normalize-scoped-slots.js b/src/core/vdom/helpers/normalize-scoped-slots.js
@@ -32,7 +32,9 @@ export function normalizeScopedSlots (
       res[key] = proxyNormalSlot(normalSlots, key)
     }
   }
-  if (slots) {
+  // avoriaz seems to mock a non-extensible $scopedSlots object
+  // and when that is passed down this would cause an error
+  if (Object.isExtensible(slots)) {
     (slots: any)._normalized = res
   }
   def(res, '$stable', slots ? !!slots.$stable : true)