import type { ReadableOptions } from 'node:stream';
import type { ReadableTyped } from '../stream.model.js';
/**
 * Convenience function to create a Readable that can be pushed into (similar to RxJS Subject).
 * Push `null` to it to complete (similar to RxJS `.complete()`).
 *
 * Difference from Readable.from() is that this readable is not "finished" yet and allows pushing more to it.
 *
 * Caution!
 * The implementation of this Readable is not fully compliant,
 * e.g the read() method doesn't return anything, so, it will hang the Node process (or cause it to process.exit(0))
 * if read() will be called AFTER everything was pushed and Readable is closed (by pushing `null`).
 * Beware of it when e.g doing unit testing! Jest prefers to hang (not exit-0).
 */
export declare function createReadable<T>(items?: Iterable<T>, opt?: ReadableOptions, onRead?: () => void): ReadableTyped<T>;
/**
 * Convenience type-safe wrapper around Readable.from() that infers the Type of input.
 */
export declare function createReadableFrom<T>(iterable: Iterable<T> | AsyncIterable<T>, opt?: ReadableOptions): ReadableTyped<T>;
/**
 * Allows to "create Readable asynchronously".
 * Implemented via a proxy Transform, which is created (and returned) eagerly,
 * and later (when source Readable is created) serves as a pass-through proxy.
 */
export declare function createReadableFromAsync<T>(fn: () => Promise<ReadableTyped<T>>): ReadableTyped<T>;