From 58f9b964745e7e6be6e48e870eab83ba8dcbfc98 Mon Sep 17 00:00:00 2001
From: kissel <johannes.kissel@disy.net>
Date: Thu, 11 Jul 2024 13:56:15 +0200
Subject: [PATCH] add X-Requested-With header to fetch() requests

---
 CHANGELOG.md   | 2 ++
 src/cadenza.js | 8 +++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc3cde60..625c3edd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+### Fixed
+- Make Cadenza return an error instead of showing an error page.
 
 ## 2.10.0 - 2024-06-11
 ### Added
diff --git a/src/cadenza.js b/src/cadenza.js
index b2b51e13..c9827807 100644
--- a/src/cadenza.js
+++ b/src/cadenza.js
@@ -851,7 +851,13 @@ export class CadenzaClient {
   ) {
     const url = this.#createUrl(path, params);
     this.#log('Fetch', url.toString());
-    const res = await fetch(url, { signal });
+    const res = await fetch(url, {
+      signal,
+      headers: {
+        // Make Cadenza return an error instead of showing an error page.
+        'X-Requested-With': 'XMLHttpRequest'
+      }
+    });
     if (!res.ok) {
       const errorType =
         {