unregister-sw-and-clients

navigator.serviceWorker.getRegistrations()
  .then(function(registrations) {
    for(let registration of registrations) {
      registration.unregister()
        .then(function() {
          return self.clients.matchAll();
        })
        .then(function(clients) {
          clients.forEach(client => {
            if (client.url && "navigate" in client) {
              client.navigate(client.url);
            }
          });
        })
    }
  });