https://speedreader-app.netlify.app/sw.js

1// Minimal service worker: makes the app installable and available offline.
2// Strategy: cache-first for same-origin GET requests, falling back to network
3// and caching the response for next time. The cache name is bumped to refresh.
4const CACHE = 'speedreader-v1'
5
6self.addEventListener('install', () => self.skipWaiting())
7
8self.addEventListener('activate', (event) => {
9  event.waitUntil(
10    caches
11      .keys()
12      .then((keys) => Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k))))
13      .then(() => self.clients.claim()),
14  )
15})
16
17self.addEventListener('fetch', (event) => {
18  const { request } = event
19  if (request.method !== 'GET' || new URL(request.url).origin !== self.location.origin) return
20
21  event.respondWith(
22    caches.match(request).then(
23      (cached) =>
24        cached ||
25        fetch(request).then((response) => {
26          if (response.ok) {
27            const copy = response.clone()
28            caches.open(CACHE).then((cache) => cache.put(request, copy))
29          }
30          return response
31        }),
32    ),
33  )
34})