import { Response } from 'express';
import { QiniuConfigObject } from './storage.config';
import { FileInfo, IStorageEngine, ResolverOpts, SavedFile } from './storage.engines';
export declare class QiniuStorage implements IStorageEngine {
    private static readonly logger;
    private readonly config;
    private readonly configObject;
    constructor(configure: () => QiniuConfigObject);
    saveEntity(file: FileInfo, opts?: {
        bucket?: string;
        prefix?: string;
        region?: string;
    }): Promise<SavedFile>;
    getEntity(fileInfo: SavedFile, toPath?: string): Promise<string>;
    listEntities(opts: {
        bucket?: string;
        prefix?: string;
    }): Promise<SavedFile[]>;
    removeEntities(opts: {
        bucket?: string;
        prefix?: string;
        filename?: string;
    }): Promise<void>;
    resolveUrl(opts: ResolverOpts): Promise<string>;
    resolveUrl(opts: ResolverOpts, res: Response): Promise<void>;
}