declare function flatten<T>(data: T[], recursive?: boolean, list?: T[]): T[];
declare const _default: {
    bytes2str: (bytes: Uint8Array) => string;
    str2bytes: (str?: string) => Uint8Array;
    str2hex: (str: string) => string;
    hex2str: (hexstr: string) => string;
    concatBytes: (...args: Uint8Array[]) => Uint8Array;
    uint32ToBytes: (uint32: Uint32Array) => Uint8Array;
    bytesToUint32: (bytes: Uint8Array) => Uint32Array;
    hex2bytes: (hex: string) => Uint8Array;
    bytes2hex: (bytes: Uint8Array) => string;
    toUint32: (str: string) => Uint32Array;
    fromUint32: (uint32: Uint32Array) => string;
    flatten: typeof flatten;
};
export default _default;