/**
 * Original work Copyright (c) 2018 PoC-Consortium
 * Modified work Copyright (c) 2019 Burst Apps Team
 */
/**
 * Converts byte array to hexadecimal string
 * Inverse operation of {@link convertHexStringToByteArray}
 * @param bytes The (unsigned) byte array to be converted
 * @param uppercase If _true_, converts hex string with uppercase characters (Default: false)
 * @return {string} A hex string representing the byte array input
 *
 * @category conversion
 */
export declare const convertByteArrayToHexString: (bytes: Uint8Array, uppercase?: boolean) => string;