From eaba7846679f31579ae4f32b949105e5ecc3c991 Mon Sep 17 00:00:00 2001
From: wangjingf <1464255286@qq.com>
Date: Mon, 4 Jun 2018 10:38:02 +0800
Subject: [PATCH] Update node.js
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this.data可能为undefined,需要判断一下
---
 packages/tree/src/model/node.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/tree/src/model/node.js b/packages/tree/src/model/node.js
index 36afeaf74..1d3e5485e 100644
--- a/packages/tree/src/model/node.js
+++ b/packages/tree/src/model/node.js
@@ -111,7 +111,7 @@ export default class Node {
     } else if (this.level > 0 && store.lazy && store.defaultExpandAll) {
       this.expand();
     }
-    if (!Array.isArray(this.data)) {
+    if (this.data && !Array.isArray(this.data)) {
       markNodeData(this, this.data);
     }
     if (!this.data) return;