/**
 * escape string to HTML special entities
 * @param str string
 * @returns
 */
export declare function escape(str: string): string;
/**
 * unescape HTML special entities to normal string
 * @param str string
 * @returns
 */
export declare function unescape(str: string): string;
declare const _default: {
    escape: typeof escape;
    unescape: typeof unescape;
};
export default _default;