/**
 * Barcode Generator
 *
 * Generates ESC/POS commands for printing 1D barcodes and 2D codes.
 * Supports Code128, Code39, EAN-13, EAN-8, UPC-A, ITF, CODABAR, QR_CODE, and PDF417 formats.
 *
 * @example
 * ```typescript
 * const generator = new BarcodeGenerator();
 * const commands = generator.generate('1234567890128', {
 *   format: BarcodeFormat.EAN13,
 *   height: 80,
 *   showText: true
 * });
 * ```
 */
/**
 * Supported barcode formats
 */
export declare enum BarcodeFormat {
    /** Code 128 - Variable length, alphanumeric */
    CODE128 = "CODE128",
    /** Code 39 - Variable length, alphanumeric with special chars */
    CODE39 = "CODE39",
    /** EAN-13 - 13 digits (12 + check digit) */
    EAN13 = "EAN13",
    /** EAN-8 - 8 digits (7 + check digit) */
    EAN8 = "EAN8",
    /** UPC-A - 12 digits (11 + check digit) */
    UPCA = "UPCA",
    /** ITF (Interleaved 2 of 5) - Even number of digits */
    ITF = "ITF",
    /** CODABAR - Numeric with special start/stop chars */
    CODABAR = "CODABAR",
    /** QR Code - 2D matrix code */
    QR_CODE = "QR_CODE",
    /** PDF417 - 2D stacked barcode */
    PDF417 = "PDF417"
}
/**
 * Barcode configuration options
 */
export interface BarcodeOptions {
    /** Barcode format */
    format: BarcodeFormat;
    /** Barcode height in dots (1-255, default: 80) */
    height?: number;
    /** Barcode module width (2-6, default: 3) */
    width?: number;
    /** Show human-readable text */
    showText?: boolean;
    /** Text position */
    textPosition?: 'above' | 'below' | 'both' | 'none';
    /** QR code error correction level (L/M/Q/H, default: M) */
    errorCorrection?: 'L' | 'M' | 'Q' | 'H';
    /** QR code model (1 or 2, default: 2) */
    qrModel?: 1 | 2;
    /** PDF417 compression mode (0-3, default: 2) */
    pdf417Compression?: 0 | 1 | 2 | 3;
    /** PDF417 security level (0-8, default: 2) */
    pdf417Security?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8;
    /** PDF417 columns (1-30, default: 2) */
    pdf417Columns?: number;
}
/**
 * Validation result
 */
export interface ValidationResult {
    /** Whether validation passed */
    valid: boolean;
    /** Validation errors */
    errors: Array<{
        field: string;
        message: string;
        code: string;
    }>;
}
/**
 * Barcode generator interface
 */
export interface IBarcodeGenerator {
    /** Generate barcode commands */
    generate(content: string, options: BarcodeOptions): Uint8Array[];
    /** Validate barcode content */
    validate(content: string, format: BarcodeFormat): ValidationResult;
    /** Get supported formats */
    getSupportedFormats(): BarcodeFormat[];
}
/**
 * Barcode Generator class
 * Generates ESC/POS commands for 1D barcodes and 2D codes
 */
export declare class BarcodeGenerator implements IBarcodeGenerator {
    /**
     * Generate barcode ESC/POS commands
     *
     * @param content - Barcode content/data
     * @param options - Barcode options
     * @returns Array of ESC/POS command buffers
     */
    generate(content: string, options: BarcodeOptions): Uint8Array[];
    /**
     * Generate 1D barcode commands
     */
    private generate1DBarcode;
    /**
     * Generate QR code commands using ESC/POS GS k 80-83
     *
     * @param content - QR code content
     * @param options - QR code options
     * @returns Array of ESC/POS command buffers
     */
    private generateQRCode;
    /**
     * Generate PDF417 commands using ESC/POS GS k 81
     *
     * PDF417 is a 2D stacked barcode format supported by many thermal printers.
     * The printer will handle the actual encoding and generation of the PDF417 symbol.
     *
     * @param content - PDF417 content (text data)
     * @param options - PDF417 options
     * @returns Array of ESC/POS command buffers
     */
    private generatePDF417;
    /**
     * Validate barcode content for the specified format
     *
     * @param content - Barcode content to validate
     * @param format - Barcode format
     * @returns Validation result
     */
    validate(content: string, format: BarcodeFormat): ValidationResult;
    /**
     * Validate QR code content
     */
    private validateQRCode;
    /**
     * Validate PDF417 content
     */
    private validatePDF417;
    /**
     * Get list of supported barcode formats
     *
     * @returns Array of supported formats
     */
    getSupportedFormats(): BarcodeFormat[];
    /**
     * Validate EAN-13 content
     */
    private validateEAN13;
    /**
     * Validate EAN-8 content
     */
    private validateEAN8;
    /**
     * Validate UPC-A content
     */
    private validateUPCA;
    /**
     * Validate Code 39 content
     */
    private validateCode39;
    /**
     * Validate Code 128 content
     */
    private validateCode128;
    /**
     * Validate ITF content
     */
    private validateITF;
    /**
     * Validate CODABAR content
     */
    private validateCodabar;
    /**
     * Calculate EAN check digit (works for EAN-13 and EAN-8)
     */
    private calculateEANCheckDigit;
    /**
     * Calculate UPC-A check digit
     */
    private calculateUPCACheckDigit;
    /**
     * Encode content for ESC/POS barcode command
     */
    private encodeContent;
    /**
     * Encode string to UTF-8 bytes
     */
    private encodeUTF8;
    /**
     * Get text position code
     */
    private getTextPosition;
    /**
     * Clamp height to valid range (1-255)
     */
    private clampHeight;
    /**
     * Clamp width to valid range (2-6)
     */
    private clampWidth;
    /**
     * Clamp QR code size to valid range (1-16)
     */
    private clampQRSize;
    /**
     * Clamp PDF417 columns to valid range (1-30)
     */
    private clampPDF417Columns;
}
export declare const barcodeGenerator: BarcodeGenerator;