add an alternative to chrome.storage.local

src/js/ConfigStorage.js

@@ -0,0 +1,41 @@
+'use strict';
+
+// idea here is to abstract around the use of chrome.storage.local as it functions differently from "localStorage" and IndexedDB
+// localStorage deals with strings, not objects, so the objects have been serialized.
+var ConfigStorage = {
+    // key can be one string, or array of strings
+    get: function(key, callback) {
+        //console.log('Abstraction.get',key);
+        if (Array.isArray(key)) {
+            var obj = {};
+            key.forEach(function (element) {
+                try {
+                    obj = {...obj, ...JSON.parse(window.localStorage.getItem(element))};
+                } catch (e) {
+                    // is okay
+                }
+            });
+            callback(obj);
+        } else {
+            var keyValue = window.localStorage.getItem(key);
+            if (keyValue) {
+                var obj = {};
+                try {
+                    obj = JSON.parse(keyValue);
+                } catch (e) {
+                    // It's fine if we fail that parse
+                }
+                callback(obj);
+            } else {
+                callback({});
+            }
+        }
+    },
+    // set takes an object like {'userLanguageSelect':'DEFAULT'}
+    set: function(input) {
+        //console.log('Abstraction.set',input);
+        Object.keys(input).forEach(function (element) {
+            window.localStorage.setItem(element, JSON.stringify(input));
+        });
+    }
+}