import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { Stream } from "@effect/core/stream/Stream/definition";
/**
 * Creates a stream by peeling off the "layers" of a value of type `S`.
 * @tsplus static effect/core/stream/Stream.Ops unfold
 * @tsplus location "@effect/core/stream/Stream/operations/unfold"
 */
export declare function unfold<S, A>(s: S, f: (s: S) => Maybe<readonly [A, S]>): Stream<never, never, A>;
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