import type * as P from "@principia/prelude";
import type { Option } from "../Option";
import type { URI, V } from "./model";
export declare const unfold: <A, B>(b: B, f: (b: B) => Option<readonly [A, B]>) => readonly A[];
export declare const Unfoldable: P.Unfoldable<[URI], V>;
//# sourceMappingURL=unfoldable.d.ts.map