/**
 * Copyright (c) 2018-2023, BOTLabs GmbH.
 *
 * This source code is licensed under the BSD 4-Clause "Original" license
 * found in the LICENSE file in the root directory of this source tree.
 */
import type { DidUri, IAttestation, IDelegationNode } from '@kiltprotocol/types';
/**
 * Creates a bitset from the permissions in the array where each enum value
 * is used to set the bit flag in the set.
 *
 * ATTEST has `0000000000000001`  (decimal 1).
 * DELEGATE has `0000000000000010` (decimal 2).
 *
 * Adding the enum values results in a decimal representation of the bitset.
 *
 * @param delegation The delegation from which you want to convert the permissions to bitset.
 * @returns The bitset as single value uint8 array.
 */
export declare function permissionsAsBitset(delegation: IDelegationNode): Uint8Array;
/**
 * Traverses a delegation tree and counts the number of delegation nodes between an attestation and an ancestral delegation node owned by `attester`.
 *
 * @param attester Identity to be located in the delegation tree.
 * @param attestation Attestation whose delegation tree to search.
 * @returns 0 if `attester` is the owner of `attestation`, the number of delegation nodes traversed otherwise.
 */
export declare function countNodeDepth(attester: DidUri, attestation: IAttestation): Promise<number>;
/**
 * Checks for errors on delegation node data.
 *
 * @param delegationNodeInput Delegation node data.
 */
export declare function errorCheck(delegationNodeInput: IDelegationNode): void;