export declare class AlphaEssApi {
    static serialNumber: string;
    static uname: string;
    static pw: string;
    static bearer: string;
    static proxyIp: string;
    static bearerValidationTime: number;
    static init(username: string, pw: string, serialNumber: string, proxyIp: string): Promise<void>;
    static setLoginData(username: string, pw: string): Promise<void>;
    static setSerialNumber(sNo: string): void;
    static login(name: string, pw: string): Promise<any>;
    static getPeriodData(beginDay: string, endDay: string): Promise<any>;
    static getDetailedDayData(day: string): Promise<any>;
    static getRealtimeData(): Promise<any>;
    private static checkBearer;
}