import { ITelegramClient } from '../../client.types.js';
import { Chat } from '../../types/index.js';
/**
 * Create a new supergroup
 *
 * @returns  Newly created supergroup
 */
export declare function createSupergroup(client: ITelegramClient, params: {
    /**
     * Supergroup title
     */
    title: string;
    /**
     * Supergroup description
     */
    description?: string;
    /**
     * Whether to create a forum
     */
    forum?: boolean;
    /**
     * TTL period (in seconds) for the newly created supergroup
     *
     * @default 0 (i.e. messages don't expire)
     */
    ttlPeriod?: number;
}): Promise<Chat>;