/**
 * 输入验证工具函数
 * 用于边界测试和运行时验证
 */
export declare class InputValidator {
    /**
     * 验证字符串输入
     */
    static validateString(input: any, fieldName?: string): string;
    /**
     * 验证语言代码
     */
    static validateLanguageCode(langCode: any): string;
    /**
     * 验证对象输入
     */
    static validateObject(input: any, fieldName?: string): object;
    /**
     * 安全的属性访问
     */
    static safePropertyAccess(obj: any, property: string, defaultValue?: any): any;
    /**
     * 验证React组件props
     */
    static validateReactProps(props: any, requiredProps?: string[]): boolean;
}
/**
 * 边界条件处理装饰器
 */
export declare function withBoundaryCheck(target: any, propertyName: string, descriptor: PropertyDescriptor): PropertyDescriptor;
/**
 * 错误边界处理
 */
export declare class ErrorBoundaryHandler {
    static handleTranslationError(error: Error, key: string, fallback?: string): string;
    static handleProviderError(error: Error, componentName: string): any;
}
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