InstallEvent

const CACHE_VERSION = 1;
const CURRENT_CACHES = {
  prefetch: `prefetch-cache-v${CACHE_VERSION}`,
};

self.addEventListener("install", (event) => {
  const urlsToPrefetch = [
    "./static/pre_fetched.txt",
    "./static/pre_fetched.html",
    "https://www.chromium.org/_/rsrc/1302286216006/config/customLogo.gif",
  ];

  console.log(
    "Handling install event. Resources to pre-fetch:",
    urlsToPrefetch,
  );

  event.waitUntil(
    caches
      .open(CURRENT_CACHES["prefetch"])
      .then((cache) =>
        cache.addAll(
          urlsToPrefetch.map(
            (urlToPrefetch) => new Request(urlToPrefetch, { mode: "no-cors" }),
          ),
        ),
      )
      .then(() => {
        console.log("All resources have been fetched and cached.");
      })
      .catch((error) => {
        console.error("Pre-fetching failed:", error);
      }),
  );
});