From 8cc9e18990e0b4c6fef9464282d34be21bf30732 Mon Sep 17 00:00:00 2001
From: Alexander Skvortsov <sasha.skvortsov109@gmail.com>
Date: Sat, 15 Aug 2020 20:25:33 -0400
Subject: [PATCH] Fix undefined $scrollParent

---
 js/src/forum/components/NotificationList.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/js/src/forum/components/NotificationList.js b/js/src/forum/components/NotificationList.js
index 0c7a463b4..8b2c905d9 100644
--- a/js/src/forum/components/NotificationList.js
+++ b/js/src/forum/components/NotificationList.js
@@ -99,6 +99,7 @@ export default class NotificationList extends Component {
 
     const $notifications = this.$('.NotificationList-content');
     const $scrollParent = $notifications.css('overflow') === 'auto' ? $notifications : $(window);
+
     $scrollParent.on('scroll', this.scrollHandler.bind(this));
   }
 
@@ -111,12 +112,13 @@ export default class NotificationList extends Component {
 
   scrollHandler() {
     const state = this.attrs.state;
-    const scrollTop = $scrollParent.scrollTop();
-    const viewportHeight = $scrollParent.height();
 
     const $notifications = this.$('.NotificationList-content');
     const $scrollParent = $notifications.css('overflow') === 'auto' ? $notifications : $(window);
 
+    const scrollTop = $scrollParent.scrollTop();
+    const viewportHeight = $scrollParent.height();
+
     const contentTop = $scrollParent === $notifications ? 0 : $notifications.offset().top;
     const contentHeight = $notifications[0].scrollHeight;