From 149333612364d1cafdc586ffa7b9a2b84a8da568 Mon Sep 17 00:00:00 2001
From: Seth Holladay <me@seth-holladay.com>
Date: Tue, 4 May 2021 00:02:12 -0400
Subject: [PATCH] Fix merging of searchParams in ky.create()

---
 source/utils/merge.ts |  2 +-
 test/main.ts          | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/source/utils/merge.ts b/source/utils/merge.ts
index 871de4d8..977f16d7 100644
--- a/source/utils/merge.ts
+++ b/source/utils/merge.ts
@@ -49,10 +49,10 @@ export const deepMerge = <T>(...sources: Array<Partial<T> | undefined>): T => {
 
 			if (isObject((source as any).headers)) {
 				headers = mergeHeaders(headers, (source as any).headers);
+				returnValue.headers = headers;
 			}
 		}
 
-		returnValue.headers = headers;
 	}
 
 	return returnValue;
diff --git a/test/main.ts b/test/main.ts
index 4470b8a7..2a7eedf1 100644
--- a/test/main.ts
+++ b/test/main.ts
@@ -474,6 +474,18 @@ test('ky.create() with deep array', async t => {
 	await server.close();
 });
 
+test('ky.create() does not mangle search params', async t => {
+	const server = await createHttpTestServer();
+	server.get('/', (request, response) => {
+		response.end(request.url);
+	});
+
+	const instance = ky.create({searchParams: {}});
+	t.is(await instance.get(server.url, {searchParams: {}}).text(), '/?');
+
+	await server.close();
+});
+
 test('ky.extend()', async t => {
 	const server = await createHttpTestServer();
 	server.get('/', (_request, response) => {