import Parser, { type TokenReader } from './stream-parser';
import { NBCRowToken } from './token';
import { ColumnValuesReader } from './row-token-parser';
/**
 * Reads an `NBCROW` token - a `ROW` token prefixed with a bitmap that flags
 * `null` columns, which then have no data.
 */
export declare class NBCRowTokenReader extends ColumnValuesReader implements TokenReader {
    nullBitmap: Buffer | undefined;
    constructor();
    read(parser: Parser): NBCRowToken;
}