import { ExtendedPublicKey, ExtendedSecretKey, PublicKey, SecretKey } from '../types/key';
declare type AnyKey = SecretKey | ExtendedSecretKey | PublicKey | ExtendedPublicKey;
export declare function isAnyKey(object: unknown): object is AnyKey;
export declare function isSecretKey(object: unknown): object is SecretKey;
export declare function isExtendedSecretKey(object: unknown): object is ExtendedSecretKey;
export declare function isPublicKey(object: unknown): object is PublicKey;
export declare function isExtendedPublicKey(object: unknown): object is ExtendedPublicKey;
export {};