From cc7562db6e7b1ed1136f24be995937f5a4ab5e8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AE=87=E5=A4=A9?= <yutent.io@gmail.com>
Date: Thu, 14 Jan 2021 13:49:54 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96toc?=
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---
 src/tools/socket.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tools/socket.js b/src/tools/socket.js
index c88b582..2f763b7 100644
--- a/src/tools/socket.js
+++ b/src/tools/socket.js
@@ -140,7 +140,7 @@ module.exports = function(app, createViewWindow) {
 
           toc = eb.flow.map((it, i) => {
             let tmp = dict[it.id] || { level: i === 0 ? i : undefined }
-            if (!tmp.hasOwnProperty('level')) {
+            if (tmp.level === undefined) {
               tmp.level = 1
             }
             if (it.id === 'titlepage') {