/** @ignore */
/** @internal */
import BigNumber from 'bignumber.js';
/**
 * Class to easily implement reading data sequentially. Expects hexstring
 * with big-endian bytes and methods return only positive values. Throws error
 *
 * @internal
 */
export default class ByteBuffer {
    private needle;
    private readonly transactionBytes;
    private readonly hexTransactionBytes;
    constructor(hexString: string);
    /** If setValue is undefined, returns the current needle position.
     * Else, sets current needle to that value.
     */
    position(setValue?: number): number | undefined;
    length(): number;
    readByte(): number;
    readShort(): number;
    readInt(): number;
    readLong(): BigNumber;
    readHexString(nBytes: number): string;
    readString(nBytes: number): string;
}