(function() {
    'use strict';
    // Check to make sure service workers are supported in the current browser,
    // and that the current page is accessed from a secure origin. Using a
    // service worker from an insecure origin will trigger JS console errors.
    // const isLocalhost = Boolean(
    //     window.location.hostname === 'localhost' ||
    //         // [::1] is the IPv6 localhost address.
    //         window.location.hostname === '[::1]' ||
    //         // 127.0.0.1/8 is considered localhost for IPv4.
    //         window.location.hostname.match(
    //             /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
    //         )
    // );

    window.addEventListener('load', function() {
        return false;
        // if (
        //     'serviceWorker' in navigator &&
        //     (window.location.protocol === 'https:' || isLocalhost)
        // ) {
        //     navigator.serviceWorker
        //         .register('./service-worker.js')
        //         .then(function(registration) {
        //             if (window.location.search === '?update=force') {
        //                 registration.update();
        //                 console.log('Service Worker Registered forcefully');
        //             }
        //             console.log('Service Worker Registered');
        //             // updatefound is fired if service-worker.js changes.
        //             registration.onupdatefound = function() {
        //                 // updatefound is also fired the very first time the SW is installed,
        //                 // and there's no need to prompt for a reload at that point.
        //                 // So check here to see if the page is already controlled,
        //                 // i.e. whether there's an existing service worker.
        //                 if (navigator.serviceWorker.controller) {
        //                     // The updatefound event implies that registration.installing is set
        //                     const installingWorker = registration.installing;

        //                     installingWorker.onstatechange = function() {
        //                         switch (installingWorker.state) {
        //                             case 'installed':
        //                                 // At this point, the old content will have been purged and the
        //                                 // fresh content will have been added to the cache.
        //                                 // It's the perfect time to display a "New content is
        //                                 // available; please refresh." message in the page's interface.
        //                                 break;

        //                             case 'redundant':
        //                                 throw new Error(
        //                                     'The installing ' +
        //                                         'service worker became redundant.'
        //                                 );

        //                             default:
        //                             // Ignore
        //                         }
        //                     };
        //                 }
        //             };
        //         })
        //         .catch(function(e) {
        //             console.error(
        //                 'Error during service worker registration:',
        //                 e
        //             );
        //         });
        // }
    });
})();
