import type { MunaClient } from "../client";
import type { User } from "../types";
export declare class UserService {
    private readonly client;
    constructor(client: MunaClient);
    /**
     * Retrieve a user.
     * @param input Input arguments. If `null` then this will retrieve the currently authenticated user.
     * @returns User.
     */
    retrieve(): Promise<User | null>;
}