From d47f41e1e0d303c19d46bb20bc71030397d33da3 Mon Sep 17 00:00:00 2001
From: Valerii Tikhomirov <v.tikhomirov.dev@gmail.com>
Date: Mon, 29 May 2023 21:34:44 +0300
Subject: [PATCH] fix: scroll position after top-direction loading

---
 src/utils.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/utils.js b/src/utils.js
index 6c478f6..53c9b84 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -74,22 +74,22 @@ export const loopTracker = {
 };
 
 export const scrollBarStorage = {
-  key: '_infiniteScrollHeight',
+  key: '_infiniteScrollPosition',
   getScrollElm(elm) {
     return elm === window ? document.documentElement : elm;
   },
   save(elm) {
     const target = this.getScrollElm(elm);
 
-    // save scroll height on the scroll parent
-    target[this.key] = target.scrollHeight;
+    // save scroll height and top position on the scroll parent
+    target[this.key] = [target.scrollHeight, target.scrollTop];
   },
   restore(elm) {
     const target = this.getScrollElm(elm);
 
     /* istanbul ignore else */
-    if (typeof target[this.key] === 'number') {
-      target.scrollTop = target.scrollHeight - target[this.key] + target.scrollTop;
+    if (typeof target[this.key][0] === 'number' && typeof target[this.key][1] === 'number') {
+      target.scrollTop = target.scrollHeight - target[this.key][0] + target[this.key][1];
     }
 
     this.remove(target);