From e668598cefe0a8a058d9deae516ac6a7d7afd6d7 Mon Sep 17 00:00:00 2001
From: Asger Hautop Drewsen <asger@tyilo.com>
Date: Mon, 24 Nov 2025 21:34:46 +0100
Subject: [PATCH] axum-extra: Add trailing newline to pretty JSON response
 (#3526)

---
 axum-extra/src/response/erased_json.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/axum-extra/src/response/erased_json.rs b/axum-extra/src/response/erased_json.rs
index 76c7390e..aa554a7e 100644
--- a/axum-extra/src/response/erased_json.rs
+++ b/axum-extra/src/response/erased_json.rs
@@ -57,7 +57,10 @@ impl ErasedJson {
     pub fn pretty<T: Serialize>(val: T) -> Self {
         let mut bytes = BytesMut::with_capacity(128);
         let result = match serde_json::to_writer_pretty((&mut bytes).writer(), &val) {
-            Ok(()) => Ok(bytes.freeze()),
+            Ok(()) => {
+                bytes.put_u8(b'\n');
+                Ok(bytes.freeze())
+            }
             Err(e) => Err(Arc::new(e)),
         };
         Self(result)