From 3067e8572bfd701ffbecd1341eec9207ff7acf07 Mon Sep 17 00:00:00 2001
From: Victor Hallberg <victor@hallberg.cc>
Date: Tue, 6 Oct 2020 17:54:06 +0200
Subject: [PATCH] fix: don't attach event listeners when there's no element

Fixes #68
---
 src/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index 39d1f0ab..06ecc91b 100644
--- a/src/index.js
+++ b/src/index.js
@@ -69,9 +69,9 @@ export function useVirtual({
 
   useIsomorphicLayoutEffect(() => {
     const element = parentRef.current
+    if (!element) { return }
 
     const onScroll = () => {
-      if (!element) return
       const scrollOffset = element[scrollKey]
       latestRef.current.scrollOffset = scrollOffset
       setRange(prevRange => calculateRange(latestRef.current, prevRange))