sw.js

// App Testimon - Service Worker
const GHPATH = '/app-testimon';
const CACHE_NAME = 'testimon-v1_5';
const URLS_TO_CACHE = [
  `${GHPATH}/`,
  `${GHPATH}/index.html`,
  `${GHPATH}/admin.html`,
  `${GHPATH}/manifest.json`
];

self.addEventListener('install', event => {
  event.waitUntil(
    caches.open(CACHE_NAME).then(cache => cache.addAll(URLS_TO_CACHE))
  );
});

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

self.addEventListener('fetch', event => {
  const url = new URL(event.request.url);
  if (url.pathname.includes('admin.html')) {
    event.respondWith(fetch(event.request).catch(() => caches.match(event.request)));
    return;
  }
  event.respondWith(
    caches.match(event.request).then(resp => resp || fetch(event.request))
  );
});