/**
 * A minimal Telegram Bot API client (fetch-based, zero dependencies).
 *
 * Just the surface a shuttle needs: identity, long-poll, send, edit, typing.
 * Keeping it dependency-free (no grammY) matches Loom's ethos and makes the
 * whole channel unit-testable with an injected fetch — no live network.
 */
export interface TelegramApiOptions {
    readonly token: string;
    readonly fetch?: typeof fetch;
    /** Override for tests / self-hosted Bot API servers. Default api.telegram.org. */
    readonly baseUrl?: string;
}
export interface TgUser {
    readonly id: number;
    readonly is_bot: boolean;
    readonly username?: string;
    readonly first_name?: string;
}
export interface TgChat {
    readonly id: number;
    readonly type: 'private' | 'group' | 'supergroup' | 'channel';
    readonly title?: string;
    readonly username?: string;
}
export interface TgMessageEntity {
    readonly type: string;
    readonly offset: number;
    readonly length: number;
    readonly user?: TgUser;
}
export interface TgMessage {
    readonly message_id: number;
    readonly from?: TgUser;
    readonly chat: TgChat;
    readonly text?: string;
    readonly caption?: string;
    readonly entities?: TgMessageEntity[];
    readonly message_thread_id?: number;
    readonly reply_to_message?: TgMessage;
}
export interface TgUpdate {
    readonly update_id: number;
    readonly message?: TgMessage;
    readonly edited_message?: TgMessage;
}
export declare class TelegramApi {
    private readonly base;
    private readonly doFetch;
    constructor(opts: TelegramApiOptions);
    private call;
    getMe(): Promise<TgUser>;
    getUpdates(offset: number, timeout?: number): Promise<TgUpdate[]>;
    sendMessage(chatId: number | string, text: string, opts?: {
        messageThreadId?: number;
    }): Promise<TgMessage>;
    editMessageText(chatId: number | string, messageId: number, text: string): Promise<TgMessage | true>;
    sendChatAction(chatId: number | string, action?: string): Promise<boolean>;
}
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