From 4807e58cb994de83f063cb82d2b4a695f29378c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B2=88=E5=94=81?= <52o@qq52o.cn>
Date: Tue, 1 Sep 2020 17:34:27 +0800
Subject: [PATCH] fix: Cannot read property level of undefined (#1357)

Co-authored-by: Anix <anik220798@gmail.com>
---
 src/core/render/compiler.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/render/compiler.js b/src/core/render/compiler.js
index 2978a9f2..17e0a814 100644
--- a/src/core/render/compiler.js
+++ b/src/core/render/compiler.js
@@ -279,7 +279,7 @@ export class Compiler {
           // Remove headers who are under current header
           for (
             let j = i;
-            deletedHeaderLevel < toc[j].level && j < toc.length;
+            j < toc.length && deletedHeaderLevel < toc[j].level;
             j++
           ) {
             toc.splice(j, 1) && j-- && i++;