import { Response } from 'node-fetch';
import { OperateBinaryObjectParams, OperateObjectParams, OperateOptionalBucketParams } from './type/object';
import { Resource } from './type/resource';
declare module 'node-fetch' {
    interface Response {
        data: any;
    }
}
export interface NosClientOptions {
    accessKey: string;
    accessSecret: string;
    endpoint: string;
    defaultBucket?: string;
}
export declare class NosBaseClient {
    options: NosClientOptions & {
        host: string;
        protocol: string;
    };
    constructor(options: NosClientOptions);
    /**
     * 底层请求方法包装
     * @param method 请求方法
     * @param headers 头信息
     * @param resource 资源信息，也会序列化到 Url 上面
     * @param [body] 请求体
     * @private
     */
    protected _request(method: string, headers: any, resource: Resource, body?: any): Promise<Response>;
    protected handleRequestError(resp: Response): Promise<Response>;
    protected request(method: string, headers: any, resource: Resource, body?: any): Promise<Response>;
    protected requestBody(method: string, headers: any, resource: Resource, body?: any): Promise<any>;
    protected validateParams(params: OperateObjectParams | OperateOptionalBucketParams): {
        bucket: string;
        headers: any;
        resource: Resource;
    };
    protected validateBinaryParams(params: OperateBinaryObjectParams): {
        sourceBucket: string;
        targetBucket: string;
        resource: Resource;
        headers: any;
    };
}