import { DataType } from "./util";
declare interface NacosListener {
    onUpgrade?: (upgrade: any, dataObj?: DataObj) => void;
}
export declare class NacosClient {
    private config;
    private client;
    constructor(config: NacosConfig & NacosListener);
    subscribe(dataId: DataId): any;
    private getDataObj;
    getData(dataId: DataId): Promise<any>;
}
declare const _default: (config: NacosConfig & NacosListener) => Promise<NacosClient>;
export default _default;
export declare interface NacosOptions {
    endpoint?: string;
    serverPort?: number;
    namespace?: string;
    accessKey?: string;
    secretKey?: string;
    httpclient?: any;
    httpAgent?: any;
    appName?: string;
    ssl?: boolean;
    refreshInterval?: number;
    contextPath?: string;
    clusterName?: string;
    requestTimeout?: number;
    defaultEncoding?: string;
    serverAddr?: string;
    unit?: string;
    nameServerAddr?: string;
    cacheDir?: string;
    identityKey?: string;
    identityValue?: string;
    endpointQueryParams?: string;
    decodeRes?: (res: any, method?: string, encoding?: string) => any;
    httpOptions?: any;
}
export type DataObj = {
    type?: DataType;
    id: string;
    group?: string;
};
export type DataId = string | DataObj;
export declare interface NacosConfig {
    serverAddr: string;
    namespace: string;
    group: string;
    dataIds: DataId | DataId[];
    type?: DataType;
    auth?: {
        username?: string;
        password?: string;
        accessToken?: string;
        authorization?: string;
    };
    options?: NacosOptions;
}