From 32ad7aa6d4c75a13e9a2741daca41f7a494ca992 Mon Sep 17 00:00:00 2001
From: Ben Halpern <bendhalpern@gmail.com>
Date: Thu, 25 Jun 2020 08:55:38 -0400
Subject: [PATCH] [deploy] Avoid running service workers on ios (#8889)

---
 app/views/service_worker/index.js.erb | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/app/views/service_worker/index.js.erb b/app/views/service_worker/index.js.erb
index e2a3f7f45..2b76ddb71 100644
--- a/app/views/service_worker/index.js.erb
+++ b/app/views/service_worker/index.js.erb
@@ -7,7 +7,10 @@
 
   self.addEventListener('install', event => {
     self.skipWaiting();
-
+    if (/iPhone|CriOS|iPad/i.test(navigator.userAgent)) {
+       // iOS seems to have issues.
+       return;
+    }
     // Populate initial serviceworker cache.
     event.waitUntil(
       caches.open(staticCacheName)
@@ -86,8 +89,8 @@
 
   self.addEventListener('fetch', event => {
     const url = new URL(event.request.url);
-    if (/iPhone|CriOS|iPad/i.test(navigator.userAgent) && event.request.referrer.includes('t.co')) {
-       // Twitter on iOS seems to cause problems
+    if (/iPhone|CriOS|iPad/i.test(navigator.userAgent)) {
+       // iOS seems to have issues.
        return;
     }
     if (url.origin === location.origin) {