From 0d1ec66d5153688cfada9bd40eb76896aa79a3e0 Mon Sep 17 00:00:00 2001
From: Richard Korinek <richard.korinek@gmail.com>
Date: Thu, 6 Oct 2022 17:09:12 +0200
Subject: [PATCH] Improved plain object checking

---
 lib/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/utils.js b/lib/utils.js
index 368070f611..e075f9e2ab 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -132,7 +132,7 @@ const isPlainObject = (val) => {
   }
 
   const prototype = getPrototypeOf(val);
-  return prototype === null || prototype === Object.prototype;
+  return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(Symbol.toStringTag in val) && !(Symbol.iterator in val);
 }
 
 /**