From 3642757ea471450495a4937f2081f4107ff53208 Mon Sep 17 00:00:00 2001
From: RoOhi <2044812+OriginalRoOhi@users.noreply.github.com>
Date: Mon, 22 Jun 2026 17:04:36 +0330
Subject: [PATCH] Fix: Ignore non-http/https protocols in Service Worker
 handleFetch (#39507)

---
 app/javascript/mastodon/service_worker/caching.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/javascript/mastodon/service_worker/caching.ts b/app/javascript/mastodon/service_worker/caching.ts
index 96c2898dd7..304f0284d6 100644
--- a/app/javascript/mastodon/service_worker/caching.ts
+++ b/app/javascript/mastodon/service_worker/caching.ts
@@ -18,6 +18,10 @@ export async function cacheRoot() {
 export function handleFetch(event: FetchEvent) {
   const url = new URL(event.request.url);
 
+  if (url.protocol !== 'http:' && url.protocol !== 'https:') {
+    return;
+  }
+
   if (url.pathname === '/auth/sign_out') {
     event.respondWith(handleLogout(event));
   } else if (/intl\/.*\.js$/.test(url.pathname)) {