DurstRechner/service-worker.js

const CACHE_NAME = 'produkt-rechner-v1';
const FILES_TO_CACHE = [
    '/',
    '/index.html',
    '/manifest.json',
    '/service-worker.js',
    '/stylesheet.css',
];

self.addEventListener('install', event => {
    event.waitUntil(
        caches.open(CACHE_NAME).then(cache => {
            return cache.addAll(FILES_TO_CACHE);
        })
    );
});

self.addEventListener('fetch', event => {
    event.respondWith(
        caches.match(event.request).then(response => {
            return response || fetch(event.request);
        })
    );
});