import * as React from 'react';
import type { TransitionStatus } from '../../utils/useTransitionStatus.js';
import type { BaseUIComponentProps } from '../../utils/types.js';
/**
 * An overlay displayed beneath the popup.
 * Renders a `<div>` element.
 *
 * Documentation: [Base UI Alert Dialog](https://base-ui.com/react/components/alert-dialog)
 */
declare const AlertDialogBackdrop: React.ForwardRefExoticComponent<AlertDialogBackdrop.Props & React.RefAttributes<HTMLDivElement>>;
declare namespace AlertDialogBackdrop {
    interface Props extends BaseUIComponentProps<'div', State> {
        /**
         * Whether to keep the element in the DOM while the alert dialog is hidden.
         * @default false
         */
        keepMounted?: boolean;
    }
    interface State {
        /**
         * Whether the dialog is currently open.
         */
        open: boolean;
        transitionStatus: TransitionStatus;
    }
}
export { AlertDialogBackdrop };