import { Chunk } from "@tsplus/stdlib/collections/Chunk/definition";
import { Tree } from "@tsplus/stdlib/collections/Tree/definition";
/**
 * Constructs a `Tree` by repeatedly applying the (possibly infinite) function `f`
 * in breadth-first order.
 * @tsplus static Tree.Ops unfold
 * @tsplus location "@tsplus/stdlib/collections/Tree/unfold"
 */
export declare function unfold<A, S>(s: S, f: (s: S) => readonly [A, Chunk<S>]): Tree<A>;
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