import type { Provider } from '../types';
/**
 * 数据验证工具类
 * 提供各种数据验证功能
 */
export declare class ValidationUtils {
    /**
     * 验证单个 Provider 配置
     */
    static validateProvider(provider: unknown, index: number): string[];
    /**
     * 验证 Providers 配置数组
     */
    static validateProviders(providers: unknown): string[];
    /**
     * 验证 Provider 索引
     */
    static validateProviderIndex(index: string, maxIndex: number): {
        valid: boolean;
        value?: number;
        error?: string;
    };
    /**
     * 验证文件路径
     */
    static validateFilePath(filePath: string): {
        valid: boolean;
        error?: string;
    };
    /**
     * 验证API Key格式
     */
    static validateApiKey(key: string): {
        valid: boolean;
        error?: string;
    };
    /**
     * 验证URL格式
     */
    static validateUrl(url: string): {
        valid: boolean;
        error?: string;
    };
    /**
     * 验证Provider名称
     */
    static validateProviderName(name: string, existingNames?: string[]): {
        valid: boolean;
        error?: string;
    };
    /**
     * 掩码显示敏感信息（如API Key）
     */
    static maskSensitiveData(data: string, showChars?: number): string;
    /**
     * 检查是否为示例配置
     */
    static isExampleConfig(providers: Provider[]): boolean;
}
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