///
import { ZlibOptions } from 'zlib';
import { NDJsonStats } from './ndjson.model';
import { TransformToNDJsonOptions } from './transformToNDJson';
export interface PipelineToNDJsonFileOptions extends TransformToNDJsonOptions {
filePath: string;
/**
* @default false
* If true - will fail if output file already exists.
*/
protectFromOverwrite?: boolean;
/**
* @default false
*/
gzip?: boolean;
/**
* Only applicable if `gzip` is enabled
*/
zlibOptions?: ZlibOptions;
}
/**
* Convenience pipeline to transform stream of objects into a file in NDJSON format.
*
* Does fs.ensureFile() before starting, which will create all needed directories and truncate the file if it existed.
*/
export declare function pipelineToNDJsonFile(streams: (NodeJS.ReadableStream | NodeJS.WritableStream)[], opt: PipelineToNDJsonFileOptions): Promise;