From 076310a789a13e352d1d9b76e3d75294afc19466 Mon Sep 17 00:00:00 2001
From: Stephen Ma <mhp889@gmail.com>
Date: Fri, 7 Feb 2020 14:28:55 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=88=A0=E9=99=A4=E6=9C=80=E5=90=8E?=
 =?UTF-8?q?=E4=B8=80=E4=B8=AA=E8=8A=82=E7=82=B9=E6=97=B6=E6=8A=A5=E9=94=99?=
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例子：https://www.iviewui.com/components/tree#ZDYJDNR，删除最后一个节点时，控制台报错，找不到节点，因为被删除了。
---
 src/components/tree/tree.vue | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/components/tree/tree.vue b/src/components/tree/tree.vue
index 9ee99fda..97b7c6d8 100644
--- a/src/components/tree/tree.vue
+++ b/src/components/tree/tree.vue
@@ -171,6 +171,7 @@
                 }
             },
             handleSelect (nodeKey) {
+                if (!this.flatState[nodeKey]) return
                 const node = this.flatState[nodeKey].node;
                 if (!this.multiple){ // reset previously selected node
                     const currentSelectedKey = this.flatState.findIndex(obj => obj.node.selected);
@@ -181,6 +182,7 @@
                 this.$emit('on-select-change', this.getSelectedNodes(), node);
             },
             handleCheck({ checked, nodeKey }) {
+                if (!this.flatState[nodeKey]) return
                 const node = this.flatState[nodeKey].node;
                 this.$set(node, 'checked', checked);
                 this.$set(node, 'indeterminate', false);