From 08edcbe46970695c1e7c350f57e9e46a2d6776aa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jimmy=20W=C3=A4rting?= <jimmy@warting.se>
Date: Mon, 4 Sep 2023 16:02:23 +0200
Subject: [PATCH] fix: preserve file path when parsing formdata (#2245)

---
 lib/fetch/body.js          |  1 +
 test/fetch/client-fetch.js | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/lib/fetch/body.js b/lib/fetch/body.js
index 11b945d18bf..105eb553157 100644
--- a/lib/fetch/body.js
+++ b/lib/fetch/body.js
@@ -387,6 +387,7 @@ function bodyMixinMethods (instance) {
         try {
           busboy = Busboy({
             headers,
+            preservePath: true,
             defParamCharset: 'utf8'
           })
         } catch (err) {
diff --git a/test/fetch/client-fetch.js b/test/fetch/client-fetch.js
index 048b76a9f78..9009d547ec6 100644
--- a/test/fetch/client-fetch.js
+++ b/test/fetch/client-fetch.js
@@ -272,6 +272,18 @@ test('busboy emit error', async (t) => {
   await t.rejects(res.formData(), 'Unexpected end of multipart data')
 })
 
+// https://github.com/nodejs/undici/issues/2244
+test('parsing formData preserve full path on files', async (t) => {
+  t.plan(1)
+  const formData = new FormData()
+  formData.append('field1', new File(['foo'], 'a/b/c/foo.txt'))
+
+  const tempRes = new Response(formData)
+  const form = await tempRes.formData()
+
+  t.equal(form.get('field1').name, 'a/b/c/foo.txt')
+})
+
 test('urlencoded formData', (t) => {
   t.plan(2)