From f1ed855f96f15ff4088cab9421dad31d81b22071 Mon Sep 17 00:00:00 2001
From: Akihiko Odaki <akihiko.odaki.4i@stu.hosei.ac.jp>
Date: Sun, 13 May 2018 20:48:32 +0900
Subject: [PATCH] Test if navigator.storage is present before using it (#7460)

---
 app/javascript/mastodon/storage/modifier.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/javascript/mastodon/storage/modifier.js b/app/javascript/mastodon/storage/modifier.js
index c2ed6f807..db1d16058 100644
--- a/app/javascript/mastodon/storage/modifier.js
+++ b/app/javascript/mastodon/storage/modifier.js
@@ -182,7 +182,9 @@ export function putStatuses(records) {
 }
 
 export function freeStorage() {
-  return navigator.storage.estimate().then(({ quota, usage }) => {
+  // navigator.storage is not present on:
+  // Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.100 Safari/537.36 Edge/16.16299
+  return 'storage' in navigator && navigator.storage.estimate().then(({ quota, usage }) => {
     if (usage + storageMargin < quota) {
       return null;
     }