import * as React from 'react';
import { TransitionProps } from '../../utils/transitions';
interface Props extends React.HTMLAttributes<HTMLDivElement> {
    /**
     * The content of the component.
     */
    children?: React.ReactNode;
    /**
     * If `true`, the backdrop is open.
     */
    open: boolean;
    /**
     * If `true`, the backdrop is invisible.
     * It can be used when rendering a popover or a custom select component.
     */
    invisible?: boolean;
    /**
     * The duration for the transition, in milliseconds.
     * You may specify a single timeout for all transitions, or individually with an object.
     */
    transitionDuration?: TransitionProps['timeout'];
}
export declare const Backdrop: React.ForwardRefExoticComponent<Props & React.RefAttributes<HTMLDivElement>>;
export {};