From 8c399ecdd735ad1fb8bb5e6066f5721881c2aa09 Mon Sep 17 00:00:00 2001
From: Angel <kayron013@gmail.com>
Date: Tue, 27 Apr 2021 02:15:11 -0400
Subject: [PATCH] minor fix

---
 src/index.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 7961cb0..d40b145 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -111,8 +111,8 @@ export default class LexoRank {
     return String.fromCharCode(char.charCodeAt(0) - 1);
   }
 
-  static between(lexBefore: Lex | null, lexAfter: Lex): LexoRank;
-  static between(lexBefore: Lex, lexAfter: Lex | null): LexoRank;
+  static between(lexBefore: Lex | null | undefined, lexAfter: Lex): LexoRank;
+  static between(lexBefore: Lex, lexAfter: Lex | null | undefined): LexoRank;
   static between(lexBefore: Lex, lexAfter: Lex): LexoRank {
     if (!lexBefore && !lexAfter) {
       throw 'Only one argument may be null';