import { Stream } from "@effect/core/stream/Stream/definition";
import { GroupBy } from "@effect/core/stream/GroupBy/definition/base";
/**
 * Run the function across all groups, collecting the results in an
 * arbitrary order.
 * @tsplus static effect/core/stream/GroupBy.Aspects mergeGroupBy
 * @tsplus pipeable effect/core/stream/GroupBy mergeGroupBy
 * @tsplus location "@effect/core/stream/GroupBy/operations/mergeGroupBy"
 */
export declare function mergeGroupBy<R, E, K, V, A, R1, E1, A1>(f: (k: K, stream: Stream<never, E, V>) => Stream<R1, E1, A1>): (self: GroupBy<R, E, K, V, A>) => Stream<R | R1, E | E1, A1>;
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