sw.js

self.addEventListener('install', function (event) {
    event.waitUntil(
        caches.open('pv1').then(function (cache) {
            return cache.addAll([
                '/index.js',
                // '/css2?family=Fira+Mono:wght@400;500;700&display=swap',
                '/a73670a20d424e9500ce.svg',
                '/favicon.ico',
                // '/assets/',
            ]);
        })
    );
});


// self.addEventListener('fetch', function (event) {
//     event.respondWith(caches.match(event.request).then(function (response) {
//         // caches.match() always resolves
//         // but in case of success response will have value
//         if (response !== undefined) {
//             return response;
//         } else {
//             return fetch(event.request).then(function (response) {
//                 // response may be used only once
//                 // we need to save clone to put one copy in cache
//                 // and serve second one
//                 let responseClone = response.clone();

//                 caches.open('pv1').then(function (cache) {
//                     cache.put(event.request, responseClone);
//                 });
//                 return response;
//             }).catch(function () {
//                 return caches.match('/sw-test/gallery/myLittleVader.jpg');
//             });
//         }
//     }));
// });