From 45c36717c559218e952a335da35f4194e954b103 Mon Sep 17 00:00:00 2001
From: tunnckoCore <5038030+tunnckoCore@users.noreply.github.com>
Date: Thu, 16 Apr 2026 03:36:28 +0300
Subject: [PATCH] test: handle null-prototype json fields

---
 test/integration/json.test.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/integration/json.test.js b/test/integration/json.test.js
index c515f1a3..411359a9 100644
--- a/test/integration/json.test.js
+++ b/test/integration/json.test.js
@@ -1,5 +1,5 @@
 import { createServer, request as _request } from "node:http";
-import assert, { deepStrictEqual } from "node:assert";
+import assert, { deepStrictEqual, strictEqual } from "node:assert";
 import formidable from "../../src/index.js";
 
 const testData = {
@@ -13,7 +13,8 @@ test("json", (done) => {
     const form = formidable({});
 
     form.parse(req, (err, fields) => {
-      deepStrictEqual(fields, {
+      strictEqual(Object.getPrototypeOf(fields), null);
+      deepStrictEqual({ ...fields }, {
         numbers: [1, 2, 3, 4, 5],
         nested: { key: "val" },
       });