import type * as CL from "../../../../Clock";
import type * as SK from "../../Sink";
import type * as C from "../core";
/**
 * Aggregates elements of this stream using the provided sink for as long
 * as the downstream operators on the stream are busy.
 *
 * This operator divides the stream into two asynchronous "islands". Operators upstream
 * of this operator run on one fiber, while downstream operators run on another. Whenever
 * the downstream fiber is busy processing elements, the upstream fiber will feed elements
 * into the sink until it signals completion.
 *
 * Any sink can be used here, but see `Sink.foldWeightedM` and `Sink.foldUntilM` for
 * sinks that cover the common usecases.
 */
export declare function aggregateAsync_<R, R1, E extends E1, E1, E2, A extends A1, A1, B>(self: C.Stream<R, E, A>, sink: SK.Sink<R1, E1, A1, E2, A1, B>): C.Stream<R & R1 & CL.HasClock, E2, B>;
/**
 * Aggregates elements of this stream using the provided sink for as long
 * as the downstream operators on the stream are busy.
 *
 * This operator divides the stream into two asynchronous "islands". Operators upstream
 * of this operator run on one fiber, while downstream operators run on another. Whenever
 * the downstream fiber is busy processing elements, the upstream fiber will feed elements
 * into the sink until it signals completion.
 *
 * Any sink can be used here, but see `Sink.foldWeightedM` and `Sink.foldUntilM` for
 * sinks that cover the common usecases.
 *
 * @ets_data_first aggregateAsync_
 */
export declare function aggregateAsync<R1, E1, E2, A1, B>(sink: SK.Sink<R1, E1, A1, E2, A1, B>): <R, E extends E1, A extends A1>(self: C.Stream<R, E, A>) => C.Stream<R & R1 & CL.HasClock, E2, B>;
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