export declare enum DBKeys {
    API_KEY = "API_KEY",
    CITY = "CITY"
}
export declare type RequestBody = {
    key: DBKeys;
    value?: any;
};
export default class StorageService {
    private static filePath;
    private static fileIsReady;
    private static isExist;
    static get(key: string): Promise<string | undefined>;
    static post({ key, value }: RequestBody): Promise<void>;
}