/**
 * Translate a custom semantic selector to the equivalent Microdata
 * attribute selector.
 *
 * e.g. :--Article -> [itemtype~='http://schema.org/Article']
 * e.g. :--author -> [itemprop~='http://schema.org/author']
 *
 * This does the inverse of the mapping defined in `./selectors.css`.
 */
export declare function translate(selectors: string): string;