https://static.talentsprint.com/ts_drupal/talentsprint/new/js/sw.js

1const CACHE_NAME = 'my-site-cache-v1';
2const FILES_TO_CACHE = [
3  '/',           // root
4  '/index.html',
5  '/style.css',
6  '/script.js',
7  '/logo.png'
8];
9
10// Install — cache files
11self.addEventListener('install', event => {
12  event.waitUntil(
13    caches.open(CACHE_NAME)
14      .then(cache => cache.addAll(FILES_TO_CACHE))
15  );
16});
17
18// Fetch — serve from cache if available
19self.addEventListener('fetch', event => {
20  event.respondWith(
21    caches.match(event.request)
22      .then(response => response || fetch(event.request))
23  );
24});