(function () {
    if (!('serviceWorker' in navigator)) {
        return;
    }

    window.addEventListener('load', function () {
        navigator.serviceWorker.getRegistrations().then(function (registrations) {
            registrations.forEach(function (registration) {
                registration.unregister().catch(function () {});
            });
        }).catch(function () {});
    });
})();