import { Mapper, AbortableAsyncMapper } from '@naturalcycles/js-lib';
import { ReadableTyped } from '../../index';
import { TransformMapOptions } from '../transform/transformMap';
/**
 * Convenience function to do `.forEach` over a Readable.
 * Typed! (unlike default Readable).
 *
 * @experimental
 */
export declare function readableForEach<T>(readable: ReadableTyped<T>, mapper: AbortableAsyncMapper<T, void>, opt?: TransformMapOptions<T, void>): Promise<void>;
/**
 * Convenience function to do `.forEach` over a Readable.
 * Typed! (unlike default Readable).
 *
 * @experimental
 */
export declare function readableForEachSync<T>(readable: ReadableTyped<T>, mapper: Mapper<T, void>): Promise<void>;