import { ITelegramClient } from '../../client.types.js';
import { InputPeerLike } from '../../types/index.js';
/**
 * Set maximum Time-To-Live of all newly sent messages in the specified chat
 *
 * @param chatId  Chat ID
 * @param period  New TTL period, in seconds (or 0 to disable)
 */
export declare function setChatTtl(client: ITelegramClient, chatId: InputPeerLike, period: number): Promise<void>;