import { SmartContractLib } from '../smartContractLib.js';
import { ByteString } from '../types/primitives.js';
/**
 * A writer that serializes `ByteString`, `boolean`, `bigint`
 * @category Standard Contracts
 */
export declare class ByteStringWriter extends SmartContractLib {
    buf: ByteString;
    constructor();
    /**
     * serializes `ByteString` with `VarInt` encoding
     * @param buf a `ByteString`
     * @returns serialized `ByteString`
     */
    writeBytes(buf: ByteString): void;
    /**
     * serializes `boolean` with fixed 1 byte
     * @param x a boolean
     * @returns serialized `ByteString`
     */
    writeBool(x: boolean): void;
    /**
     * serializes `bigint` with `VarInt` encoding
     * @param x a boolean
     * @returns serialized `ByteString`
     */
    writeVarInt(x: bigint): void;
}
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