/**
 * decode Base64URL
 * @export
 * @param {string} str - string
 * @returns {string}
 */
export declare function decode(str: string): string;
/**
 * encode Base64URL
 * @export
 * @param {string} str - string
 * @returns {string}
 */
export declare function encode(str: string): string;
declare const _default: {
    decode: typeof decode;
    encode: typeof encode;
};
export default _default;