import { TransformLogProgressOptions, TransformMapOptions } from '../..';
export interface NDJSONMapOptions<OUT = any> extends TransformMapOptions<OUT>, TransformLogProgressOptions {
    inputFilePath: string;
    outputFilePath: string;
    mapperFilePath: string;
    limit?: number;
}
/**
 * Unzips input file automatically, if it ends with `.gz`.
 * Zips output file automatically, if it ends with `.gz`.
 */
export declare function ndjsonMap<IN = any, OUT = any>(opt: NDJSONMapOptions<OUT>): Promise<void>;