import { LogLevel } from '../utils/logger';
/**
 * Adapter configuration options
 */
export interface AdapterConfig {
    /** Size of data chunks in bytes (default: 20) */
    chunkSize: number;
    /** Delay between chunks in milliseconds (default: 20) */
    delay: number;
    /** Number of retries on write failure (default: 3) */
    retries: number;
    /** Connection timeout in milliseconds (default: 10000) */
    timeout: number;
}
/**
 * Driver configuration options
 */
export interface DriverConfig {
    /** Text encoding (default: 'GBK') */
    encoding: string;
    /** Paper width in mm (default: 58) */
    paperWidth: number;
}
/**
 * Logging configuration options
 */
export interface LoggingConfig {
    /** Log level (default: WARN) */
    level: LogLevel;
}
/**
 * Complete printer configuration
 */
export interface PrinterConfig {
    adapter: AdapterConfig;
    driver: DriverConfig;
    logging: LoggingConfig;
}
/**
 * Default configuration values
 */
export declare const DEFAULT_CONFIG: PrinterConfig;
/**
 * Deep merge two configuration objects
 *
 * @param target - Target configuration
 * @param source - Source configuration
 * @returns Merged configuration
 */
export declare function mergeConfig(target: Partial<PrinterConfig>, source: Partial<PrinterConfig>): PrinterConfig;