From 52bb1ea63c1ad4d7e01670ae058239085bb85745 Mon Sep 17 00:00:00 2001
From: Willian Agostini <willian.agostini@gmail.com>
Date: Sun, 30 Apr 2023 01:38:56 +0000
Subject: [PATCH 1/2] Add failing tests for #2257

---
 test/agent.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/test/agent.ts b/test/agent.ts
index 7d46eb5e2..87fbf4f55 100644
--- a/test/agent.ts
+++ b/test/agent.ts
@@ -205,3 +205,17 @@ test('no socket hung up regression', withServer, async (t, server, got) => {
 
 	agent.destroy();
 });
+
+test('accept undefined agent', withServer, async (t, server, got) => {
+	server.get('/', (_request, response) => {
+		response.end('ok');
+	});
+
+	const undefinedAgent = undefined;
+	t.truthy((await got({
+		https: {
+			rejectUnauthorized: false,
+		},
+		agent: undefinedAgent,
+	})).body);
+});

From d957f19741b41eb61c033355bf9908d636d9669b Mon Sep 17 00:00:00 2001
From: Willian Agostini <willian.agostini@gmail.com>
Date: Sun, 30 Apr 2023 01:39:48 +0000
Subject: [PATCH 2/2] fix: allow undefined on agent property #2257

---
 source/core/options.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/source/core/options.ts b/source/core/options.ts
index 8eedbe205..fa058a738 100644
--- a/source/core/options.ts
+++ b/source/core/options.ts
@@ -1078,7 +1078,13 @@ export default class Options {
 				}
 
 				// @ts-expect-error Type 'unknown' is not assignable to type 'never'.
-				this[key as keyof Options] = options[key as keyof Options];
+				const value = options[key as keyof Options];
+				if (value === undefined) {
+					continue;
+				}
+
+				// @ts-expect-error Type 'unknown' is not assignable to type 'never'.
+				this[key as keyof Options] = value;
 
 				push = true;
 			}