`@ionic/angular` has no exported member `AlertButton`

I’ve upgraded to Ionic 5.3.4 and switched from ionic-angular to @ionic/angular package. Now my AlertButton import doesn’t work, even though the Ionic API DOCS states this is the type I need to use for buttons definition:

Module '"../../../node_modules/@ionic/angular/ionic-angular"' has no exported member 'AlertButton'.ts(2305

How can I properly import this type to use in my methods signature?