/// <reference types="multer" />
/// <reference types="node" />
import { FileDto, FileProps } from '../storage';
import { FileMetadata } from '../storage/file-meta';
import { ValidationError } from '../resource';
export declare class FilesUtil {
    static generateFileName(originalName: string): string;
    static originalNameFromGenerated(generatedName: string): string;
    static makeDirectoryName(pattern: string, meta?: FileMetadata): string;
    static makeFileName(pattern: string, name: string, extension: string, meta?: FileMetadata): string;
    static removeTemporaryFiles(files: Record<string, Express.Multer.File[]>): Promise<void>;
    static removeEmptyDirectories(directory: string, level?: number): Promise<void>;
    static ensureDirectoryExists(filePath: string): Promise<{
        created: boolean;
        dirname: string;
    }>;
    static validateFile(field: string, file: Express.Multer.File | FileDto, fileProps: FileProps): ValidationError[];
    static createFilesUpdateDto(files: Record<string, Express.Multer.File[]>, filePropsMap: Record<string, FileProps>): {};
    static createFilesResponseDto<T>(files: Record<string, Express.Multer.File[]>, data: any): Record<string, string | string[]>;
    static mergeFileArrays(currentResource: any, resource: any, fileFields: string[]): void;
    static fileBuffer(filePath: string): Buffer;
    static parseEnvFile(envFilePath: string): Record<string, any>;
    static parseEnvFiles(envFilePaths: string[]): Record<string, any>;
    private static replacePatternVariables;
}