The PushSubscriptionOptions interface of the Push API represents the options associated with a push subscription.

The read-only PushSubscriptionOptions object is returned by calling PushSubscription.options on a PushSubscription. This interface has no constructor of its own.

PushSubscriptionOptions.userVisibleOnly Read only

A boolean value indicating that the returned push subscription will only be used for messages whose effect is made visible to the user.

PushSubscriptionOptions.applicationServerKey Read only

A public key your push server will use to send messages to client apps via a push server.

Calling PushSubscription.options on a PushSubscription returns a PushSubscriptionOptions object. In the example below this is printed to the console.

navigator.serviceWorker.ready.then((reg) => {
  reg.pushManager.getSubscription().then((subscription) => {
    const options = subscription.options;
    console.log(options); // a PushSubscriptionOptions object
  });
});