From 5245b4c62b73b707de012aae0830c45a201d6c63 Mon Sep 17 00:00:00 2001
From: Aldrin Jenson <aldrinjenson@gmail.com>
Date: Tue, 30 Mar 2021 06:13:51 +0530
Subject: [PATCH] Fix cacheUndefined bug - #901 (#915)

- add check to see if cache is defined before deleting
---
 ui/src/authProvider.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/ui/src/authProvider.js b/ui/src/authProvider.js
index e64798cad..dacffc656 100644
--- a/ui/src/authProvider.js
+++ b/ui/src/authProvider.js
@@ -99,9 +99,10 @@ const removeItems = () => {
 }
 
 const clearServiceWorkerCache = () => {
-  caches.keys().then(function (keyList) {
-    for (let key of keyList) caches.delete(key)
-  })
+  window.caches &&
+    caches.keys().then(function (keyList) {
+      for (let key of keyList) caches.delete(key)
+    })
 }
 
 const generateSubsonicSalt = () => {