sw.js.dist

/** SW auto-generated on %APP_BUILD_DATE% **/
const CACHE_KEY = 'im-%APP_VERSION%';
const assets = [
%APP_ASSETS%
];

self.addEventListener('install', function(event) {
  event.waitUntil(
    caches.open(CACHE_KEY)
    .then(function(cache) {
      return cache.addAll(assets);
    })
  );
});

self.addEventListener('activate', function(event) {
  event.waitUntil(
    caches.keys().then(function(cacheNames) {
      return Promise.all(
        cacheNames.filter(function(cacheName) {
          return CACHE_KEY !== cacheName;
        }).map(function(cacheName) {
          return caches.delete(cacheName);
        })
      );
    })
  );
});

self.addEventListener('fetch', function(event) {
  const requestUrl = new URL(
    event.request.url
  );

  if (requestUrl.pathname.includes("assets/") && requestUrl.hostname === self.location.hostname) {
    const promiseResponse = caches.open(CACHE_KEY)
    .then(function(cache) {
      return cache.match(event.request)
      .then(function(response) {
        if (response) {
          return response;
        } else {
          return fetch(event.request)
          .then(function(response) {
            cache.put(
              event.request,
              response.clone()
            );

            return response;
          });
        }
      });

    });
    event.respondWith(promiseResponse);
  }
});