From aa566e9535c5afd76fa15b39f42de395758189eb Mon Sep 17 00:00:00 2001
From: roymondchen <roymondchen@tencent.com>
Date: Thu, 9 Feb 2023 16:57:22 +0800
Subject: [PATCH] =?UTF-8?q?fix(editor):=20set=20root=20=E5=8F=AF=E8=83=BD?=
 =?UTF-8?q?=E6=B2=A1=E6=9C=89items?=
MIME-Version: 1.0
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---
 packages/editor/src/services/editor.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/editor/src/services/editor.ts b/packages/editor/src/services/editor.ts
index 6d52e794..016d409f 100644
--- a/packages/editor/src/services/editor.ts
+++ b/packages/editor/src/services/editor.ts
@@ -108,8 +108,8 @@ class Editor extends BaseService {
         throw new Error('root 不能为数组');
       }
 
-      if (isObject(value) && !(value instanceof StageCore) && !(value instanceof Map)) {
-        this.state.pageLength = value.items.length;
+      if (value && isObject(value) && !(value instanceof StageCore) && !(value instanceof Map)) {
+        this.state.pageLength = value.items?.length || 0;
       } else {
         this.state.pageLength = 0;
       }