From 65c669e99f2b43b7b004f73e109ed4259d165610 Mon Sep 17 00:00:00 2001
From: Mikhail Bodrov <bodrovmiha@yandex.ru>
Date: Mon, 27 Dec 2021 22:09:36 +0200
Subject: [PATCH] [Robustness] `stringify`: avoid relying on a global
 `undefined` (#427)

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

diff --git a/lib/stringify.js b/lib/stringify.js
index b74c014c..87498203 100644
--- a/lib/stringify.js
+++ b/lib/stringify.js
@@ -147,7 +147,7 @@ var normalizeStringifyOptions = function normalizeStringifyOptions(opts) {
         return defaults;
     }
 
-    if (opts.encoder !== null && opts.encoder !== undefined && typeof opts.encoder !== 'function') {
+    if (opts.encoder !== null && typeof opts.encoder !== 'undefined' && typeof opts.encoder !== 'function') {
         throw new TypeError('Encoder has to be a function.');
     }