/**
 * List of events supported for listening by BackButton.
 */
export interface BackButtonEventsMap {
    /**
     * Being emitted when user pressed back button.
     */
    click: () => void;
    /**
     * Being emitted when back button changes visibility status.
     * @param visible - current visibility status.
     */
    visibleChange: (visible: boolean) => void;
}
/**
 * Known BackButton event name.
 */
export declare type BackButtonEventName = keyof BackButtonEventsMap;
/**
 * Returns listener for specified BackButton event.
 */
export declare type BackButtonEventListener<E extends BackButtonEventName> = BackButtonEventsMap[E];