From 923b1ff4ec547be25bbe89cddc0b0dc849e40c90 Mon Sep 17 00:00:00 2001
From: chriszarate <chris@zarate.org>
Date: Tue, 11 Jul 2017 13:57:52 -0400
Subject: [PATCH] Fix security exception on iOS when localStorage is disabled.

See, e.g.:

https://github.com/angular-translate/angular-translate/issues/629
---
 backbone.fetch-cache.js | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/backbone.fetch-cache.js b/backbone.fetch-cache.js
index 0d446f7..8794cdd 100644
--- a/backbone.fetch-cache.js
+++ b/backbone.fetch-cache.js
@@ -26,18 +26,16 @@
     collectionFetch: Backbone.Collection.prototype.fetch
   },
   supportLocalStorage = (function() {
-    var supported = typeof window.localStorage !== 'undefined';
-    if (supported) {
-      try {
-        // impossible to write on some platforms when private browsing is on and
-        // throws an exception = local storage not supported.
-        localStorage.setItem('test_support', 'test_support');
-        localStorage.removeItem('test_support');
-      } catch (e) {
-        supported = false;
-      }
+    try {
+      // impossible to write on some platforms when private browsing is on and
+      // throws an exception = local storage not supported.
+      localStorage.setItem('test_support', 'test_support');
+      localStorage.removeItem('test_support');
+    } catch (e) {
+      return false;
     }
-    return supported;
+
+    return true;
   })();
 
   Backbone.fetchCache = (Backbone.fetchCache || {});