From 995421642d48b688f718d9fbffbacea46be68559 Mon Sep 17 00:00:00 2001
From: EnixCoda <enixcoda@gmail.com>
Date: Tue, 7 Aug 2018 21:32:13 +0800
Subject: [PATCH] fix: prevent scroll errors

---
 src/utils/DOMHelper.js | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/utils/DOMHelper.js b/src/utils/DOMHelper.js
index 50776e1..d9546da 100644
--- a/src/utils/DOMHelper.js
+++ b/src/utils/DOMHelper.js
@@ -58,10 +58,13 @@ function scrollToRepoContent() {
 function scrollToNodeElement(index) {
   const nodeElementSelector = '.node-item'
   const nodeElements = document.querySelectorAll(nodeElementSelector)
-  nodeElements[index].scrollIntoView({
-    behavior: 'smooth',
-    block: 'center',
-  })
+  const targetElement = nodeElements[index]
+  if (targetElement) {
+    targetElement.scrollIntoView({
+      behavior: 'smooth',
+      block: 'center',
+    })
+  }
 }
 
 const pjax = new PJAX({