abstract member actions: NotificationAction array
abstract member body: string
abstract member data: obj
abstract member dir: NotificationDirection
abstract member icon: string
abstract member lang: string
abstract member onclick: (Event -> unit) option with get, set
abstract member onclose: (Event -> unit) option with get, set
abstract member onerror: (Event -> unit) option with get, set
abstract member onshow: (Event -> unit) option with get, set
abstract member requireInteraction: bool
abstract member silent: bool option
abstract member tag: string
abstract member title: string