From d07c27f14b0e56a19de71398f2b87d7bfc7987ea Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sat, 23 Jan 2021 18:43:19 -0500
Subject: [PATCH] fix(write_concern): avoid throwing error when `options` is
 null

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

diff --git a/src/write_concern.ts b/src/write_concern.ts
index b2ab9262fce..e73c3a548ff 100644
--- a/src/write_concern.ts
+++ b/src/write_concern.ts
@@ -75,7 +75,7 @@ export class WriteConcern {
     options?: WriteConcernOptions | WriteConcern | W,
     inherit?: WriteConcernOptions | WriteConcern
   ): WriteConcern | undefined {
-    if (typeof options === 'undefined') return undefined;
+    if (options == null) return undefined;
     inherit = inherit ?? {};
     let opts;
     if (typeof options === 'string' || typeof options === 'number') {