Clients.openWindow()

//    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();
  //    Windows
  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));
    }),
  );
});