From f97afc2425986c2a411c1cda1981f57e468f9bc0 Mon Sep 17 00:00:00 2001
From: Ilia Mashkov <hikkikomori7@gmail.com>
Date: Wed, 22 Apr 2026 13:37:23 +0300
Subject: [PATCH] fix(createVirtualizer): add window check to resolve the
 ReferenceError

---
 .../helpers/createVirtualizer/createVirtualizer.svelte.ts    | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/shared/lib/helpers/createVirtualizer/createVirtualizer.svelte.ts b/src/shared/lib/helpers/createVirtualizer/createVirtualizer.svelte.ts
index 7e68bdd..d1faa3e 100644
--- a/src/shared/lib/helpers/createVirtualizer/createVirtualizer.svelte.ts
+++ b/src/shared/lib/helpers/createVirtualizer/createVirtualizer.svelte.ts
@@ -258,12 +258,13 @@ export function createVirtualizer<T>(
             // Calculate initial offset ONCE
             const getElementOffset = () => {
                 const rect = node.getBoundingClientRect();
-                return rect.top + window.scrollY;
+                const scrollY = typeof window !== 'undefined' ? window.scrollY : 0;
+                return rect.top + scrollY;
             };
 
             let cachedOffsetTop = 0;
             let rafId: number | null = null;
-            containerHeight = window.innerHeight;
+            containerHeight = typeof window !== 'undefined' ? window.innerHeight : 0;
 
             const handleScroll = () => {
                 if (rafId !== null) {