/**
 * Telegram Send Options Utilities
 *
 * Build send options for Telegram API, parse data URLs, and resolve media methods.
 * Extracted to eliminate code duplication in outbound-sender.ts
 */
export interface TelegramSendParams {
    threadId?: string;
    replyToMessageId?: string;
    silent?: boolean;
    parseMode?: 'HTML' | 'Markdown';
    caption?: string;
}
export type TelegramMediaMethod = 'sendPhoto' | 'sendVideo' | 'sendAudio' | 'sendDocument' | 'sendVoice';
/**
 * Build Telegram API send options
 * Eliminates duplicate code across multiple send paths
 */
export declare function buildSendOptions(params: TelegramSendParams): Record<string, unknown>;
/**
 * Parse data URL into mimeType and buffer
 * Supports: data:mime/type;base64,DATA
 */
export declare function parseDataUrl(dataUrl: string): {
    mimeType: string;
    buffer: Buffer;
} | null;
/**
 * Resolve media method based on mime type or category
 */
export declare function resolveMediaMethod(mimeTypeOrCategory: string): TelegramMediaMethod;