I'd like to share with you this snip:

<link rel="manifest" href="/manifest.json">
    <script>
        let active_sw_name = "sw_001.js";

        if('serviceWorker' in navigator) {
            navigator.serviceWorker.getRegistrations()
                .then(function(registrations) {
                    for(let registration of registrations) {
                        if(registration.active.scriptURL !== 'https://www.pandorasecret.co.il/'+active_sw_name){ registration.unregister(); console.log("Unregistered") }
                    }
                });
            navigator.serviceWorker.register('/'+active_sw_name);
        }

    </script>
    <link rel="apple-touch-icon" sizes="512x512" href="/images/style/logo.png">