export declare type ImplementationOptions = {
    name: string;
};
export declare type Implementation = {
    KEYS: {
        ACCOUNT_UCAN: string;
        CID_LOG: string;
        UCANS: string;
        SESSION: string;
    };
    getItem: <T>(key: string) => Promise<T | null>;
    setItem: <T>(key: string, val: T) => Promise<T>;
    removeItem: (key: string) => Promise<void>;
    clear: () => Promise<void>;
};