From da0aeeb11dc99f94811a93e3a75549c8d622b2d4 Mon Sep 17 00:00:00 2001
From: Arthur Milliken <amilliken@gmail.com>
Date: Wed, 2 Mar 2022 22:07:55 -0800
Subject: [PATCH] change null to undefined

---
 index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.d.ts b/index.d.ts
index 5ccd58fc14..1c41030362 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -41,7 +41,7 @@ declare module "node-lmdb" {
   }
 
   type BatchOptions = {
-    progress?: (ops: BatchResult[]) => null;
+    progress?: (ops: BatchResult[]) => undefined;
   } & PutOptions;
 
   /**