/**
 * source by `dom-matches`
 * https://github.com/necolas/dom-matches.git
 */
/**
 * Determine if a DOM element matches a CSS selector
 *
 * @param {Element} elem
 * @param {String} selector
 * @return {Boolean}
 * @api public
 */
export default function matches(elem: Element, selector: string): boolean;