import { ErrorUnion, OkUnion } from '../outputs';
/**
 * Changes client data associated with a chat
 * @param {Object} params
 * @param {number} [params.chatId] - Chat identifier
 * @param {string} [params.clientData] - New value of client_data
 * @param {Object} state
 * @returns {OkUnion | ErrorUnion}
 */
export declare type SetChatClientDataMethod = <ResponseT = OkUnion>(params: SetChatClientDataParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SetChatClientDataParams {
    /** Chat identifier */
    chatId?: number;
    /** New value of client_data */
    clientData?: string;
}