/**
 * EMK to KAR Converter Utility (Server-Side)
 *
 * Server-side conversion for Node.js environments
 * Uses @karaplay/file-coder server API
 */
/**
 * Server-side conversion result interface
 */
export interface EmkConversionResultServer {
    /** Converted KAR file as Buffer */
    karBuffer: Buffer;
    /** Song metadata */
    metadata: {
        title?: string;
        artist?: string;
        code?: string;
    };
    /** Original filename */
    filename: string;
    /** Success flag */
    success: boolean;
    /** Error message if failed */
    error?: string;
}
/**
 * Convert EMK file to KAR format (Server-Side)
 *
 * @param emkPath - Path to EMK file
 * @param options - Conversion options
 * @returns Conversion result with KAR buffer
 */
export declare function convertEmkToKarServer(emkPath: string, options?: {
    /** Output path for KAR file (optional) */
    outputPath?: string;
}): Promise<EmkConversionResultServer>;
/**
 * Convert EMK buffer to KAR (Server-Side)
 *
 * @param emkBuffer - EMK file buffer
 * @param filename - Original filename
 * @returns Conversion result with KAR buffer
 */
export declare function convertEmkBufferToKar(emkBuffer: Buffer, filename: string): Promise<EmkConversionResultServer>;
/**
 * Batch convert multiple EMK files (Server-Side)
 *
 * @param emkPaths - Array of EMK file paths
 * @param outputDir - Output directory for KAR files
 * @returns Array of conversion results
 */
export declare function convertEmkToKarBatchServer(emkPaths: string[], outputDir?: string): Promise<EmkConversionResultServer[]>;