import * as React from 'react';
import { TransitionProps } from '../../utils/transitions';
interface Props extends Omit<TransitionProps, 'timeout'> {
    /**
     * A single child content element.
     */
    children: React.ReactElement;
    /**
     * The duration for the transition, in milliseconds.
     * You may specify a single timeout for all transitions, or individually with an object.
     *
     * Set to 'auto' to automatically calculate transition time based on height.
     */
    timeout?: 'auto' | number | {
        appear?: number;
        enter?: number;
        exit?: number;
    };
}
/**
 * Grow component expand outwards from the center of the child element, while also fading in from transparent to opaque.
 */
export declare const Grow: React.ForwardRefExoticComponent<Props & React.RefAttributes<React.ReactInstance>>;
export {};