/**
 * @fileoverview Extracts citation metadata (author, date, title, source) from
 * a document's `<meta>` tags using a list of commonly used property/name attributes.
 */
export interface CiteMetadata {
    author?: string;
    date?: string;
    title?: string;
    source?: string;
}
/**
 * Extract cite info from common property names in webpage's metadata
 * @param {Document} doc dom object of document
 * @returns {CiteMetadata} author, date, title, source
 */
export declare function extractCiteFromMetadata(doc: Document): CiteMetadata;