import { AsyncMapper } from '@naturalcycles/js-lib';
import { TransformLogProgressOptions, TransformMapOptions } from '../..';
export interface NDJSONStreamForEachOptions<IN = any> extends TransformMapOptions<IN, void>, TransformLogProgressOptions<IN> {
    inputFilePath: string;
}
/**
 * Convenience function to `forEach` through an ndjson file.
 */
export declare function ndjsonStreamForEach<T>(mapper: AsyncMapper<T, void>, opt: NDJSONStreamForEachOptions<T>): Promise<void>;