Clients: openWindow()

openWindow(url)

//   OS  
if (self.Notification.permission === "granted") {
  const notificationObject = {
    body: "Click here to view your messages.",
    data: { url: `${self.location.origin}/some/path` },
    // data: { url: 'http://example.com' },
  };
  self.registration.showNotification(
    "You've got messages!",
    notificationObject,
  );
}

//    
self.addEventListener("notificationclick", (e) => {
  //   
  e.notification.close();
  //  Window  
  e.waitUntil(
    clients.matchAll({ type: "window" }).then((clientsArr) => {
      //  URL     ,   
      const hadWindowToFocus = clientsArr.some((windowClient) =>
        windowClient.url === e.notification.data.url
          ? (windowClient.focus(), true)
          : false,
      );
      //   ,  URL    .
      if (!hadWindowToFocus)
        clients
          .openWindow(e.notification.data.url)
          .then((windowClient) => (windowClient ? windowClient.focus() : null));
    }),
  );
});