From 0c1c99b01753e05cfeb615787db6bf11ceb0488d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karol=20Szafra=C5=84ski?= <kszafranski@eclipsesource.com>
Date: Tue, 4 May 2021 16:40:58 +0200
Subject: [PATCH] Work around an unknown ArrayBuffer bug in iOS 14.5

In one Tabris.js application we ran into a case where an empty
ArrayBuffer was unexpectedly detached. That caused "Receiver is
detached" type error in `slice()` method.

Since we do not know for sure why and how that ArrayBuffer was happened
to be detached we implement a workaround to prevent this exception.

This issue was not reproducible in any lower version of iOS.

Change-Id: Id4216fdde4aa000ab3a4b8d996a588c0632d5297
---
 src/tabris/util.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tabris/util.js b/src/tabris/util.js
index b03e4f42..d0fbba25 100644
--- a/src/tabris/util.js
+++ b/src/tabris/util.js
@@ -175,7 +175,7 @@ export function isReadable(value) {
  */
 export function read(value) {
   if (value instanceof ArrayBuffer) {
-    return value.slice(0);
+    return value.byteLength === 0 ? new ArrayBuffer() : value.slice(0);
   }
   if (ArrayBuffer.isView(value)) {
     return value.buffer.slice(0);