sw.js

var version = 'v30 - 2015-11-16';
var toCache = [
  '/',
  'activePage.js',
  'activePage.js.map',
  'config.js',
  'config.js.map',
  'zalmy.js',
  'zalmy.js.map',
  'zalmy.webapp',
  'require.js',
  'favicon.ico',
  'style/basic.css',
  'style/OpenSans-SemiBold.ttf',
  'style/icon-128.png',
  'style/icon-512.png',
  'style/icon-60.png',
  'style/icon-64.png'
];

self.addEventListener('install', event => {
  event.waitUntil(
    caches.open('static' + version).then(c => c.addAll(toCache))
  );
});

self.addEventListener('activate', event => {
  event.waitUntil(
    Promise.all(
      caches.keys().then(keys =>
        keys.filter(key => key != 'static' + version).map(key => caches.delete(key))
      )
    )
  );
});

self.addEventListener('fetch', event => {
  event.respondWith(caches.match(event.request));
});