From ffd4a29bbae89bee58ecd895fac8f1ce63a5eba4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20B=C3=BCchele?= <danielbuechele@fb.com>
Date: Thu, 5 Sep 2019 04:40:39 -0700
Subject: [PATCH] VirtualList

Summary: fixing ts-strict errors

Reviewed By: passy

Differential Revision: D17181140

fbshipit-source-id: 0b67a744c7fa5d3ef3aad9212e52d1397d873d4d
---
 src/ui/components/VirtualList.tsx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ui/components/VirtualList.tsx b/src/ui/components/VirtualList.tsx
index 6dd97f12e..853b74331 100644
--- a/src/ui/components/VirtualList.tsx
+++ b/src/ui/components/VirtualList.tsx
@@ -61,7 +61,7 @@ export default class VirtualList extends Component<
     overscanCount: 10,
   };
 
-  ref: HTMLElement;
+  ref: HTMLElement | undefined;
 
   setRef = (ref: HTMLElement) => {
     this.ref = ref;
@@ -74,7 +74,7 @@ export default class VirtualList extends Component<
   };
 
   handleScroll = () => {
-    this.setState({offset: this.ref.scrollTop});
+    this.setState({offset: this.ref ? this.ref.scrollTop : 0});
     if (this.props.sync === true) {
       this.forceUpdate();
     }