import { ITelegramClient } from '../../client.types.js';
import { InputPeerLike, ChatMember } from '../../types/index.js';
/**
 * Get information about a single chat member
 *
 * @param chatId  Chat ID or username
 * @param userId  User ID, username, phone number, `"me"` or `"self"`
 * @returns  Chat member, or `null` if user is not a member of the chat
 */
export declare function getChatMember(client: ITelegramClient, params: {
    /** Chat ID or username */
    chatId: InputPeerLike;
    /** User ID, username, phone number, `"me"` or `"self"` */
    userId: InputPeerLike;
}): Promise<ChatMember | null>;