/**
 * Extracts the author from the document and validates it as a human name
 *
 * @param {Document} document
 * @returns {object|null} author_cite, author_short, author_type - or null if no valid author found
*/
export declare function extractAuthor(document: any): {
    author_cite: any;
    author_short: any;
    author_type: number;
};