export default class Util {
    /**
     * Time constant comparison of two arrays
     *
     * @param {Uint8Array} lh First array of bytes
     * @param {Uint8Array} rh Second array of bytes
     * @return {Boolean} True if the arrays are equal (length and content), false otherwise
     */
    static compare: (lh: Uint8Array, rh: Uint8Array) => boolean;
    static normalizeUTF8: (str: string) => string;
}