From 693938d956572e4651eaa27f476f94fc890a2b00 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Thu, 6 Jun 2019 13:04:31 +0800
Subject: [PATCH] fix: vnode key ref should default to null

---
 packages/runtime-core/src/vnode.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/runtime-core/src/vnode.ts b/packages/runtime-core/src/vnode.ts
index 66dc226f..862bded0 100644
--- a/packages/runtime-core/src/vnode.ts
+++ b/packages/runtime-core/src/vnode.ts
@@ -119,8 +119,8 @@ export function createVNode(
   const vnode: VNode = {
     type,
     props,
-    key: props && props.key,
-    ref: props && props.ref,
+    key: (props && props.key) || null,
+    ref: (props && props.ref) || null,
     children: null,
     component: null,
     el: null,