import React from 'react';
type Size = 'extraSmall' | 'small' | 'medium' | 'large';
export interface ThumbnailProps {
    /**
     * Size of thumbnail
     * @default 'medium'
     */
    size?: Size;
    /** URL for the image */
    source: string | React.FunctionComponent<React.SVGProps<SVGSVGElement>>;
    /** Alt text for the thumbnail image */
    alt: string;
    /** Transparent background */
    transparent?: boolean;
}
export declare const Thumbnail: React.ForwardRefExoticComponent<ThumbnailProps & React.RefAttributes<HTMLSpanElement>>;
export {};