qcobjects-docs/public/pwabuilder-sw.js

The official app and website for documentation of QCObjects

/* eslint-disable no-undef */
// This is the service worker with the combined offline experience (Offline page + Offline copy of pages)

const CACHE = "qcobjectsnewapp-offline-page";

importScripts("https://storage.googleapis.com/workbox-cdn/releases/5.1.2/workbox-sw.js");

const offlineFallbackPage = "index-fallback.html";

self.addEventListener("message", (event) => {
  if (event.data && event.data.type === "SKIP_WAITING") {
    self.skipWaiting();
  }
});

self.addEventListener("install", async (event) => {
  event.waitUntil(
    caches.open(CACHE)
      .then((cache) => cache.add(offlineFallbackPage))
  );
});

if (workbox.navigationPreload.isSupported()) {
  workbox.navigationPreload.enable();
}

workbox.routing.registerRoute(
  // eslint-disable-next-line prefer-regex-literals
  new RegExp("/*"),
  new workbox.strategies.StaleWhileRevalidate({
    cacheName: CACHE
  })
);

self.addEventListener("fetch", (event) => {
  if (event.request.mode === "navigate") {
    event.respondWith((async () => {
      try {
        const preloadResp = await event.preloadResponse;

        if (preloadResp) {
          return preloadResp;
        }

        const networkResp = await fetch(event.request);
        return networkResp;
      } catch (error) {

        const cache = await caches.open(CACHE);
        const cachedResp = await cache.match(offlineFallbackPage);
        return cachedResp;
      }
    })());
  }
});