From ac6f7435c2db71d7e2601221b4da6b7cfdaa4c0b Mon Sep 17 00:00:00 2001
From: Nathan Bierema <nbierema@gmail.com>
Date: Fri, 21 Aug 2020 19:56:29 -0400
Subject: [PATCH] feature(react-base16-styling): allow theme in invertTheme to
 be undefined (#600)

---
 packages/react-base16-styling/src/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-base16-styling/src/index.ts b/packages/react-base16-styling/src/index.ts
index 382fcec3..9d8cca29 100644
--- a/packages/react-base16-styling/src/index.ts
+++ b/packages/react-base16-styling/src/index.ts
@@ -266,7 +266,7 @@ export const getBase16Theme = (
     : undefined;
 };
 
-export const invertTheme = (theme: Theme): Theme => {
+export const invertTheme = (theme: Theme | undefined): Theme | undefined => {
   if (typeof theme === 'string') {
     return `${theme}:inverted`;
   }