import { ErrorUnion, MessageUnion } from '../outputs';
/**
 * Returns the last message sent in a chat no later than the specified date
 * @param {Object} params
 * @param {number} [params.chatId] - Chat identifier
 * @param {number} [params.date] - Point in time (Unix timestamp) relative to which
 * to search for messages
 * @param {Object} state
 * @returns {MessageUnion | ErrorUnion}
 */
export declare type GetChatMessageByDateMethod = <ResponseT = MessageUnion>(params: GetChatMessageByDateParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface GetChatMessageByDateParams {
    /** Chat identifier */
    chatId?: number;
    /** Point in time (Unix timestamp) relative to which to search for messages */
    date?: number;
}