import { TreeKey, TreeNode } from './types.js';
export declare enum Direction {
    Left = "L",
    Right = "R"
}
export type Proof = [TreeKey | null, TreeKey | null] | [TreeKey | Uint8Array, TreeKey | Direction][];
export default function membershipProof<T = any>(root: TreeNode<T> | null, k: TreeKey): Proof;
