export declare class TNSSpotifyNotificationObserver extends NSObject { private _onReceiveCallback; static new(): TNSSpotifyNotificationObserver; initWithCallback(onReceiveCallback: (notification: NSNotification) => void): TNSSpotifyNotificationObserver; onReceive(notification: NSNotification): void; static ObjCExposedMethods: { "onReceive": { returns: any; params: typeof NSNotification[]; }; }; }