From ec4bd3aad8fcf8b0cf5df213dea87b52dfe5c903 Mon Sep 17 00:00:00 2001
From: Wojciech Maj <kontakt@wojtekmaj.pl>
Date: Wed, 26 Jul 2023 10:05:20 +0200
Subject: [PATCH] Improve propTypes

---
 src/shared/propTypes.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/shared/propTypes.ts b/src/shared/propTypes.ts
index e40be52b..821ba16c 100644
--- a/src/shared/propTypes.ts
+++ b/src/shared/propTypes.ts
@@ -82,9 +82,14 @@ export const isRef = PropTypes.oneOfType([
   }),
 ]);
 
+const isRange = PropTypes.arrayOf(
+  PropTypes.oneOfType([PropTypes.instanceOf(Date), PropTypes.oneOf([null])]).isRequired,
+) as Requireable<Range<Date>>;
+
 export const isValue = PropTypes.oneOfType([
   PropTypes.instanceOf(Date),
-  PropTypes.arrayOf(PropTypes.instanceOf(Date)),
+  PropTypes.oneOf([null]),
+  isRange,
 ]);
 
 export const isViews = PropTypes.arrayOf(PropTypes.oneOf(allViews));