fix(runtime-dom): fix shadowRoot instanceof check in unsupported brow…

…sers (#4238)
vuejs · Aug 2, 2021 · bc7dd93 · bc7dd93
1 parent d3d5ad2
commit bc7dd93
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/packages/runtime-dom/src/index.ts b/packages/runtime-dom/src/index.ts
@@ -184,6 +184,7 @@ function normalizeContainer(
   }
   if (
     __DEV__ &&
+    window.ShadowRoot &&
     container instanceof window.ShadowRoot &&
     container.mode === 'closed'
   ) {