From 659c212feb07a7abdf672da0976adec6dfaf9e8b Mon Sep 17 00:00:00 2001
From: lihbr <lihbr@users.noreply.github.com>
Date: Fri, 4 Feb 2022 12:08:21 +0100
Subject: [PATCH] fix: `isFilled.image` thumbnail names should extend `string |
 null`, fixes #41

---
 src/isFilled.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/isFilled.ts b/src/isFilled.ts
index 005abce..fb41aee 100644
--- a/src/isFilled.ts
+++ b/src/isFilled.ts
@@ -94,7 +94,7 @@ export const imageThumbnail = (
  *
  * @returns `true` if `field` is filled, `false` otherwise.
  */
-export const image = <ThumbnailNames extends string>(
+export const image = <ThumbnailNames extends string | null>(
 	field: ImageField<ThumbnailNames>,
 ): field is ImageField<ThumbnailNames, "filled"> => {
 	return imageThumbnail(field);