/// <reference types="node" />
/// <reference types="node" />
import { StorageEngine } from 'multer';
import { FileStorageOption, FileStorageProviderEnum, FileSystem, UploadedFile } from '@metad/contracts';
export declare abstract class Provider<T> {
    static instance: any;
    tenantId?: string;
    abstract name: FileStorageProviderEnum;
    abstract config: FileSystem;
    constructor();
    abstract url(path: string): string;
    abstract path(path: string): string;
    abstract handler(options: FileStorageOption): StorageEngine;
    abstract getFile(file: string): Promise<Buffer>;
    abstract putFile(fileContent: string | Buffer | URL, path?: string): Promise<UploadedFile>;
    abstract deleteFile(path: string): Promise<void>;
    abstract getInstance(): T;
    mapUploadedFile(file: any): UploadedFile;
}