fix(runtime-core): normalize empty extra props to null for cloneVnode

fix vuejs#1704
underfin · Jul 28, 2020 · aec2338 · aec2338
1 parent d452723
commit aec2338
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/packages/runtime-core/src/vnode.ts b/packages/runtime-core/src/vnode.ts
@@ -427,6 +427,9 @@ export function cloneVNode<T, U>(
   vnode: VNode<T, U>,
   extraProps?: Data & VNodeProps | null
 ): VNode<T, U> {
+  if (extraProps && Object.keys(extraProps).length === 0) {
+    extraProps = null
+  }
   // This is intentionally NOT using spread or extend to avoid the runtime
   // key enumeration cost.
   const { props, patchFlag } = vnode