import { ErrorUnion, MessageUnion } from '../outputs';
/**
 * Changes the current TTL setting (sets a new self-destruct timer) in a secret chat
 * and sends the corresponding message
 * @param {Object} params
 * @param {number} [params.chatId] - Chat identifier
 * @param {number} [params.ttl] - New TTL value, in seconds
 * @param {Object} state
 * @returns {MessageUnion | ErrorUnion}
 */
export declare type SendChatSetTtlMessageMethod = <ResponseT = MessageUnion>(params: SendChatSetTtlMessageParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SendChatSetTtlMessageParams {
    /** Chat identifier */
    chatId?: number;
    /** New TTL value, in seconds */
    ttl?: number;
}