From 990bfd2e3eaf0f0c977a7af7330ac4ad54f768cb Mon Sep 17 00:00:00 2001
From: Sebastian Schmidt <mrschmidt@google.com>
Date: Thu, 17 Aug 2023 11:30:23 -0700
Subject: [PATCH] Don't access "document" in WebWorker

Fixes https://github.com/google/mediapipe/issues/4694

PiperOrigin-RevId: 557885230
---
 mediapipe/web/graph_runner/platform_utils.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mediapipe/web/graph_runner/platform_utils.ts b/mediapipe/web/graph_runner/platform_utils.ts
index 7e1decf3..d86e002d 100644
--- a/mediapipe/web/graph_runner/platform_utils.ts
+++ b/mediapipe/web/graph_runner/platform_utils.ts
@@ -32,5 +32,6 @@ export function isIOS() {
     // tslint:disable-next-line:deprecation
   ].includes(navigator.platform)
       // iPad on iOS 13 detection
-      || (navigator.userAgent.includes('Mac') && 'ontouchend' in document);
+      || (navigator.userAgent.includes('Mac') &&
+          (typeof document !== undefined && 'ontouchend' in document));
 }