export declare class ValidationUtils {
    static validateRequired(value: any, fieldName: string): void;
    static validateString(value: any, fieldName: string, minLength?: number, maxLength?: number): string;
    static validateNumber(value: any, fieldName: string, min?: number, max?: number): number;
    static validateUrl(value: any, fieldName: string): string;
    static validateFileExists(filePath: string, fieldName?: string): string;
    static validateDirectoryExists(dirPath: string, fieldName?: string): string;
    static validateArray<T>(value: any, fieldName: string, minLength?: number): T[];
    static validateObject(value: any, fieldName: string, requiredKeys?: string[]): Record<string, any>;
    static validateEnum<T extends string>(value: any, fieldName: string, allowedValues: T[]): T;
    static validatePositiveInteger(value: any, fieldName: string): number;
    static validateBoolean(value: any, fieldName: string): boolean;
    static isVideoItem(value: any): boolean;
}
//# sourceMappingURL=index.d.ts.map