service-worker.js

let Cache_Name = `Auwsum-Kitchen-1`;

let filesToCache = [
    '/',
    '/index.html',
    '/styles/bootstrap.min.css',
    '/styles/app.css',
    '/scripts/jquery-3.3.1.slim.min.js',
    '/scripts/bootstrap.min.js',
    '/scripts/services.js',
    '/scripts/app.js',
    '/images/drink.png',
    '/images/rice.jpg',
    '/images/snack.jpg',
    '/images/soup.png',
    '/images/stew.jpg',
    '/images/swallow.jpeg'
];

self.addEventListener("install", event => {
    self.skipWaiting();
    event.waitUntil(
        caches.open(Cache_Name).then(cache => cache.addAll(filesToCache))
    )
})

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