const CACHE='falcon-technical-v1';
const ASSETS=['./','./index.html','./manifest.json','./logo.svg'];
self.addEventListener('install',e=>e.waitUntil(caches.open(CACHE).then(c=>c.addAll(ASSETS))));
self.addEventListener('activate',e=>e.waitUntil(self.clients.claim()));
self.addEventListener('fetch',e=>e.respondWith(caches.match(e.request).then(r=>r||fetch(e.request).then(res=>{const copy=res.clone();caches.open(CACHE).then(c=>c.put(e.request,copy));return res}).catch(()=>caches.match('./index.html')))));