/**
 * NativelyBluetoothPrinter class provides methods for Bluetooth device management and printing operations.
 * This class handles device discovery, connection management, service discovery, and data printing.
 *
 * Usage:
 *
 * const printer = new NativelyBluetoothPrinter();
 *
 * // 1. Discover devices
 * printer.discoverDevices((response) => {
 *   if (response.devices) {
 *     // Handle list of devices
 *   }
 * });
 *
 * // 2. Connect to a device
 * printer.connectDevice("00:11:22:33:AA:BB", (response) => {
 *   if (response.status === "SUCCESS") {
 *     // Connected successfully
 *   }
 * });
 *
 * // 3. Discover services (optional for bonded printers)
 * printer.discoverService((response) => {
 *   if (response.status === "SUCCESS") {
 *     // Handle services and characteristics
 *   }
 * });
 *
 * // 4. Print data
 * printer.printData("27,112,0,25,250", "18f0", "2af1", 2, (response) => {
 *   if (response.status === "SUCCESS") {
 *     // Printing successful
 *   }
 * });
 *
 */
export declare class NativelyBluetoothPrinter {
    private readonly id;
    /**
     * Discovers available Bluetooth devices.
     * @param callback Function to handle the response containing list of devices
     * @param uuids Array of service UUIDs to filter devices by
     * @callback {Object} response
     * @callback {Array<{name: string, id: string}>} [response.devices] - List of discovered devices
     * @callback {string} [response.status] - Status of the operation if failed
     * @callback {string} [response.message] - Error message if failed
     */
    discoverDevices(callback: Function, uuids?: string[]): void;
    /**
     * Connects to a specified Bluetooth device.
     * @param deviceId The unique identifier of the device to connect
     * @param callback Function to handle the connection response
     * @callback {Object} response
     * @callback {string} response.status - "SUCCESS" or "FAILED"
     * @callback {string} [response.message] - Error message if failed
     */
    connectDevice(deviceId: string, callback: Function): void;
    /**
     * Disconnects from the currently connected Bluetooth device.
     * @param callback Function to handle the disconnection response
     * @callback {Object} response
     * @callback {string} response.status - "SUCCESS" or "FAILED"
     * @callback {string} [response.message] - Error message if failed
     */
    disconnectDevice(callback: Function): void;
    /**
     * Discovers available services and characteristics on the connected device.
     * @param callback Function to handle the service discovery response
     * @callback {Object} response
     * @callback {string} response.status - "SUCCESS" or "FAILED"
     * @callback {Array<{service_id: string, characteristics: string[]}>} [response.services] - List of services and characteristics
     * @callback {string} [response.message] - Additional information or error message
     */
    discoverService(callback: Function, deviceId: string): void;
    /**
     * Sends data to the connected printer.
     * @param payload Comma-separated byte values to print
     * @param serviceId UUID of the service to use (default: '18f0')
     * @param characteristicId UUID of the characteristic to use (default: '2af1')
     * @param linesToAppend Number of new lines to append after printing (default: 0)
     * @param callback Function to handle the printing response
     * @callback {Object} response
     * @callback {string} response.status - "SUCCESS" or "FAILED"
     * @callback {string} [response.message] - Error message if failed
     */
    printData(payload: string, serviceId: string | undefined, characteristicId: string | undefined, linesToAppend: number | undefined, callback: Function): void;
    /**
     * Checks if a specific device is currently connected.
     * @param deviceId The unique identifier of the device to check
     * @param callback Function to handle the connection status response
     * @callback {Object} response
     * @callback {boolean} response.is_connected - Whether the device is connected
     * @callback {string} [response.message] - Additional information if another device is connected
     */
    isDeviceConnected(deviceId: string, callback: Function): void;
}