import type { IStream } from '../types.js';
/**
 * Turn a Stream of promises into a Stream containing the promises' values.
 * Event order is always preserved, regardless of promise fulfillment order.
 * Resolved values flush immediately once earlier promises settle.
 *
 * promise p:             ---1
 * promise q:             ------2
 * promise r:             -3
 * stream:                -p---q---r->
 * awaitPromises(stream): ---1--23--->
 */
export declare const awaitPromises: <T>(s: IStream<Promise<T>>) => IStream<T>;