import { CIIBaseValidator } from '../cii.validator.js';
/**
 * Validator for ZUGFeRD invoice format
 */
export declare class ZUGFeRDValidator extends CIIBaseValidator {
    /**
     * Validates ZUGFeRD XML structure
     * @returns True if structure validation passed
     */
    protected validateStructure(): boolean;
    /**
     * Validates ZUGFeRD XML against business rules
     * @returns True if business validation passed
     */
    protected validateBusinessRules(): boolean;
}