Notification with Service Workers now is working!

When a Notification arrives, it save into the IndexDb,
then in Vue.js call a polling to check in the db if there is a different record count.
If is different then call a get to update the notification.

public/js/storage.js

@@ -1,4 +1,4 @@
-const OtherTables = ['categories', 'config', 'swmsg']
+const OtherTables = ['categories', 'config', 'swmsg', 'notifications']
 const MainTables = ['todos', 'projects']
 const allMethod = ['sync_post_', 'sync_patch_', 'delete_']
 
@@ -13,7 +13,7 @@ let idbKeyval = (() => {
     if (!db) {
       // console.log('CREO DB STORAGE JS !')
       db = new Promise((resolve, reject) => {
-        const openreq = indexedDB.open('mydb3', 11);
+        const openreq = indexedDB.open('mydb3', 13);
 
         openreq.onerror = () => {
           reject(openreq.error);
@@ -84,12 +84,19 @@ let idbKeyval = (() => {
     async getdata(table, key) {
       let req;
 
+      console.log('getdata', table, key)
+
       await withStore('readonly', table, store => {
         // console.log('store', store, 'key', key)
         req = store.get(key);
+        // console.log('   req', req)
       });
 
-      return req.result;
+      if (req) {
+        return req.result;
+      } else {
+        return null;
+      }
     },
     async getalldata(table) {
       let req;