basic cache all service-worker

service-worker.js

const PRECACHE = 'precache-v2';
const RUNTIME = 'runtime';

// A list of local resources we always want to be cached.
const PRECACHE_URLS = [
  './' // Alias for index.html
  // 'fonts/MaterialIcons-Regular.012cf6a.woff',
  // 'fonts/Roboto-Bold.ad140ff.woff',
  // 'fonts/Roboto-Light.37fbbba.woff',
  // 'fonts/Roboto-Medium.303ded6.woff',
  // 'fonts/Roboto-Regular.081b11e.woff',
  // 'fonts/Roboto-Thin.90d3804.woff',
  // 'js/0.6287906c54a59ee16790.js',
  // 'js/1.c59f7cafdd7101af8554.js',
  // 'js/2.12493e50dd0bdd6edc4c.js',
  // 'js/3.33a4d895589dab5f5e70.js',
  // 'js/4.5cc8d2a3e2d6669f8a78.js',
  // 'js/5.cca72417da7ad5104714.js',
  // 'js/6.baf8cc65343bf68017ab.js',
  // 'js/7.4391460d2fa8a249e467.js',
  // 'js/app.1350f10f5c4606bf9aa3.js',
  // 'js/vendor.868c4b50a129e1482916.js',
  // 'statics/quasar-logo.png',
  // 'statics/icons/apple-icon-152x152.png',
  // 'statics/icons/icon-512x512.png',
  // 'statics/icons/favicon-16x16.png',
  // 'index.html',
  // 'app.8e4b8ab36b5441f8f0f9cd7c89179705.css'
];

// The install handler takes care of precaching the resources we always need.
self.addEventListener('install', event => {
  event.waitUntil(
    caches.open(PRECACHE)
      .then(cache => cache.addAll(PRECACHE_URLS))
      .then(self.skipWaiting())
  );
});

// The activate handler takes care of cleaning up old caches.
self.addEventListener('activate', event => {
  const currentCaches = [PRECACHE, RUNTIME];
  event.waitUntil(
    caches.keys().then(cacheNames => {
      return cacheNames.filter(cacheName => !currentCaches.includes(cacheName));
    }).then(cachesToDelete => {
      return Promise.all(cachesToDelete.map(cacheToDelete => {
        return caches.delete(cacheToDelete);
      }));
    }).then(() => self.clients.claim())
  );
});

// The fetch handler serves responses for same-origin resources from a cache.
// If no response is found, it populates the runtime cache with the response
// from the network before returning it to the page.
self.addEventListener('fetch', event => {
  // Skip cross-origin requests, like those for Google Analytics.
  if (event.request.url.startsWith(self.location.origin)) {
    event.respondWith(
      caches.match(event.request).then(cachedResponse => {
        if (cachedResponse) {
          return cachedResponse;
        }

        return caches.open(RUNTIME).then(cache => {
          return fetch(event.request).then(response => {
            // Put a copy of the response in the runtime cache.
            if(event.request.url.includes('kat.khare.co.in/api/')){
              return response;
            } else {
              return cache.put(event.request, response.clone()).then(() => {
                return response;
              });
            }
          });
        });
      })
    );
  }
});