export type CloudStorage = {
    setItem: (key: string, value: string, callback?: CloudStorageCallback['setItem']) => CloudStorage;
    getItem: (key: string, callback: CloudStorageCallback['getItem']) => CloudStorage;
    getItems: (keys: string[], callback: CloudStorageCallback['getItems']) => CloudStorage;
    removeItem: (key: string, callback?: CloudStorageCallback['removeItem']) => CloudStorage;
    removeItems: (keys: string[], callback?: CloudStorageCallback['removeItems']) => CloudStorage;
    getKeys: (callback: CloudStorageCallback['getKeys']) => CloudStorage;
};
export type CloudStorageCallback = {
    setItem: (error: string | null, success: null | true) => void;
    getItem: (error: string | null, value: null | string) => void;
    getItems: (error: string | null, values: null | Record<string, string>) => void;
    removeItem: (error: string | null, success: null | true) => void;
    removeItems: (error: string | null, success: null | true) => void;
    getKeys: (error: string | null, keys: null | string[]) => void;
};