From 0dba5d44e60d33b909f4e4d05663c7ddf746a1f2 Mon Sep 17 00:00:00 2001
From: ysj16 <504427021@qq.com>
Date: Wed, 25 Mar 2020 00:09:42 +0800
Subject: [PATCH] fix(TransitionGroup): ignore comment node when warn (fix#869)
 (#875)

---
 packages/runtime-dom/src/components/TransitionGroup.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/runtime-dom/src/components/TransitionGroup.ts b/packages/runtime-dom/src/components/TransitionGroup.ts
index 0cefb8f09..331b5f198 100644
--- a/packages/runtime-dom/src/components/TransitionGroup.ts
+++ b/packages/runtime-dom/src/components/TransitionGroup.ts
@@ -9,6 +9,7 @@ import {
 } from './Transition'
 import {
   Fragment,
+  Comment,
   VNode,
   warn,
   resolveTransitionHooks,
@@ -108,7 +109,7 @@ const TransitionGroupImpl = {
             child,
             resolveTransitionHooks(child, cssTransitionProps, state, instance)
           )
-        } else if (__DEV__) {
+        } else if (__DEV__ && child.type !== Comment) {
           warn(`<TransitionGroup> children must be keyed.`)
         }
       }