import { Stream } from "@effect/core/stream/Stream/definition";
/**
 * Statefully maps over the elements of this stream to produce all
 * intermediate results of type `S` given an initial S.
 * @tsplus static effect/core/stream/Stream.Aspects scan
 * @tsplus pipeable effect/core/stream/Stream scan
 * @tsplus location "@effect/core/stream/Stream/operations/scan"
 */
export declare function scan<S, A>(s: S, f: (s: S, a: A) => S): <R, E>(self: import("../definition").Stream<R, E, A>) => import("../definition").Stream<R, E, S>;
//# sourceMappingURL=scan.d.ts.map