import { Provider } from '../types/options';
import { Header206, IFile, PartialStream } from '../types/storage';
export declare abstract class BaseStorage {
    protected readonly provider: Provider;
    protected constructor(provider: Provider);
    get storageProvider(): Provider;
    abstract putFile(path: string, data: Buffer): Promise<IFile>;
    abstract getFileOrFolder(fileId: string): Promise<IFile>;
    abstract readFile(fileId: string): Promise<NodeJS.ReadableStream>;
    abstract deleteFileOrFolder(fileId: string): Promise<boolean>;
    abstract moveFileOrFolder(fileId: string, newPath: string): Promise<IFile>;
    abstract renameFileOrFolder(fileId: string, newName: string): Promise<IFile>;
    abstract createFolder(path: string): Promise<IFile>;
    abstract readFolder(folderId: string): Promise<IFile[]>;
    abstract readRootFolder(): Promise<IFile[]>;
    abstract getSignedUrl(fileId: string, expires?: number): Promise<string>;
    abstract streamFile(fileId: string, range: string): Promise<PartialStream>;
    protected buildRange(range: string, file: IFile): {
        start: number;
        end: number;
        headers: Header206;
    };
}