import { ErrorUnion, MessageUnion } from '../outputs';
/**
 * Returns information about a pinned chat message
 * @param {Object} params
 * @param {number} [params.chatId] - Identifier of the chat the message belongs to
 * @param {Object} state
 * @returns {MessageUnion | ErrorUnion}
 */
export declare type GetChatPinnedMessageMethod = <ResponseT = MessageUnion>(params: GetChatPinnedMessageParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface GetChatPinnedMessageParams {
    /** Identifier of the chat the message belongs to */
    chatId?: number;
}