From a9e3bab2805b60e8d8dffd4eccfde8c05d2e6684 Mon Sep 17 00:00:00 2001
From: Vadim Dalecky <streamich@users.noreply.github.com>
Date: Sun, 7 Jul 2019 15:42:38 +0200
Subject: [PATCH] fix: iframe can be null

---
 src/useSize.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/useSize.tsx b/src/useSize.tsx
index c488e767..4079dbf4 100644
--- a/src/useSize.tsx
+++ b/src/useSize.tsx
@@ -45,7 +45,7 @@ const useSize = (
   };
 
   useEffect(() => {
-    const iframe: HTMLIFrameElement = ref.current;
+    const iframe: HTMLIFrameElement | null = ref.current;
 
     if(!iframe) {
       // iframe will be undefined if component is already unmounted