import { RedBlackTree } from "@tsplus/stdlib/collections/RedBlackTree/definition";
import type { Direction, RedBlackTreeIterable } from "@tsplus/stdlib/collections/RedBlackTree/definition";
/**
 * Returns an iterator that traverse entries with keys less than the specified
 * key.
 * @tsplus static RedBlackTree.Aspects lt
 * @tsplus pipeable RedBlackTree lt
 * @tsplus location "@tsplus/stdlib/collections/RedBlackTree/lt"
 */
export declare function lt<K>(key: K, direction?: Direction): <V>(self: import("@tsplus/stdlib/collections/RedBlackTree/definition").RedBlackTree<K, V>) => RedBlackTreeIterable<K, V>;
//# sourceMappingURL=lt.d.ts.map