Service worker generator

// Generated by instantpwa.com/tools/service-worker-generator
const CACHE = 'v1';
const SHELL = ['/', '/manifest.webmanifest'];

self.addEventListener('install', (e) => {
  e.waitUntil(caches.open(CACHE).then((c) => c.addAll(SHELL)));
  self.skipWaiting();
});

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

self.addEventListener('fetch', (e) => {
  if (e.request.method !== 'GET') return;
  e.respondWith(
    caches.match(e.request).then((cached) => {
      const fresh = fetch(e.request).then((res) => {
        const copy = res.clone();
        caches.open(CACHE).then((c) => c.put(e.request, copy));
        return res;
      }).catch(() => cached);
      return cached || fresh;
    })
  );
});

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