/// <reference types="react" />
export declare type Size = 'small' | 'medium' | 'large';
export interface Props {
    /**
     * Size of thumbnail
     * @default 'medium'
     */
    size?: Size;
    /** URL for the image */
    source: string;
    /** Alt text for the thumbnail image */
    alt: string;
}
export default function Thumbnail({ source, alt, size }: Props): JSX.Element;