const V="404layers-v2";
const FILES=["./", "index.html", "manifest.webmanifest", "icons/icon-192.png", "icons/icon-512.png", "icons/maskable-512.png", "fonts/barlow-condensed-600.woff2", "fonts/barlow-400.woff2", "fonts/barlow-condensed-700.woff2", "fonts/barlow-500.woff2", "fonts/barlow-condensed-500.woff2", "fonts/barlow-600.woff2"];
self.addEventListener("install",e=>e.waitUntil(caches.open(V).then(c=>c.addAll(FILES)).then(()=>self.skipWaiting())));
self.addEventListener("activate",e=>e.waitUntil(caches.keys().then(ks=>Promise.all(ks.filter(k=>k!==V).map(k=>caches.delete(k)))).then(()=>self.clients.claim())));
self.addEventListener("fetch",e=>{
  if(e.request.method!=="GET")return;
  const url=new URL(e.request.url);if(url.origin!==location.origin)return;
  // network first for the page (so updates land), cache first for everything else
  if(e.request.mode==="navigate"){
    e.respondWith(fetch(e.request).then(r=>{const c=r.clone();caches.open(V).then(x=>x.put("index.html",c));return r}).catch(()=>caches.match("index.html")));
    return;
  }
  e.respondWith(caches.match(e.request).then(r=>r||fetch(e.request)));
});