https://stile.me/js/tygh/service_worker_register.js?current_locati…&scripts=&ver=1790925245

1const {
2  currentScript
3} = document;
4if ('serviceWorker' in navigator && currentScript !== null && 'src' in currentScript) {
5  const currentScriptUrl = new URL(currentScript.src);
6  const currentLocation = Object.fromEntries(currentScriptUrl.searchParams.entries()).current_location;
7  if (currentLocation) {
8    const serviceWorkerUrl = new URL('service_worker.js', currentLocation.endsWith('/') ? currentLocation : currentLocation + '/');
9
10    // Extendable via add-ons
11    for (const [searchKey, searchValue] of currentScriptUrl.searchParams) {
12      serviceWorkerUrl.searchParams.set(searchKey, searchValue);
13    }
14    const serviceWorkerUrlHref = serviceWorkerUrl.href;
15    const isRegistered = async () => (await navigator.serviceWorker.getRegistrations()).some(reg => reg.active && new URL(reg.active.scriptURL).pathname === serviceWorkerUrl.pathname);
16    const onReady = () => {
17      if (navigator.serviceWorker.controller !== null) {
18        navigator.serviceWorker.controller.postMessage('page_loaded');
19      }
20    };
21    const checkAndRegisterServiceWorker = async () => {
22      if (await isRegistered()) {
23        if (document.readyState === 'loading') {
24          document.addEventListener('DOMContentLoaded', onReady);
25        } else {
26          onReady();
27        }
28        return;
29      }
30
31      // service_worker.js MUST be located in the root. Absolute path required
32      navigator.serviceWorker.register(serviceWorkerUrlHref);
33    };
34    checkAndRegisterServiceWorker();
35  }
36}