export type TelegramBotClientOptions = {
    sendTimeoutMs?: number;
    pollRequestTimeoutMs?: number;
};
export type TelegramIncomingMessage = {
    messageId: number;
    chatId: string;
    text: string;
    replyToMessageId?: number;
};
type TelegramUpdate = {
    update_id?: unknown;
    message?: {
        message_id?: unknown;
        chat?: {
            id?: unknown;
        };
        text?: unknown;
        reply_to_message?: {
            message_id?: unknown;
        };
    };
};
export type TelegramFetch = typeof fetch;
export declare class TelegramBotClient {
    private readonly botToken;
    private readonly chatId;
    private readonly fetchFn;
    private readonly options;
    private running;
    private abortController;
    private nextOffset;
    constructor(botToken: string, chatId: string, fetchFn?: TelegramFetch, options?: TelegramBotClientOptions);
    start(onMessage: (message: TelegramIncomingMessage) => void | Promise<void>, onError?: (error: Error) => void): void;
    stop(): void;
    sendMessage(text: string, signal?: AbortSignal): Promise<number>;
    private pollLoop;
    private sanitizeError;
    private call;
}
export declare function normalizeIncomingMessage(update: TelegramUpdate): TelegramIncomingMessage | undefined;
export declare function trimTelegramText(text: string): string;
export {};