From c199c8a1dcefffcbf712d1cba0f2cd328a6fb2e6 Mon Sep 17 00:00:00 2001
From: Claas <claas@claas.dev>
Date: Sun, 28 Dec 2025 20:21:26 +0100
Subject: [PATCH] Fix Safari issue with shared array buffer

---
 app/src/service-worker/serviceWorker.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/src/service-worker/serviceWorker.ts b/app/src/service-worker/serviceWorker.ts
index 9612062..3ad6c8f 100644
--- a/app/src/service-worker/serviceWorker.ts
+++ b/app/src/service-worker/serviceWorker.ts
@@ -181,7 +181,8 @@ async function postMessage(friendId: string, body: Uint8Array<ArrayBuffer>) {
 function assertNotShared(
   data: Uint8Array<ArrayBufferLike>
 ): asserts data is Uint8Array<ArrayBuffer> {
-  if (data.buffer instanceof SharedArrayBuffer)
+  // Need to check if SharedArrayBuffer is even defined for Safari
+  if ("SharedArrayBuffer" in globalThis && data.buffer instanceof SharedArrayBuffer)
     throw new Error("Uint8Array uses a SharedArrayBuffer");
 }
 
-- 
2.51.2