import { ISerializedStorageProvider } from "./types";
/**
 * Base class for a serialized storage provider, where missing routines for either strings or bytes uses the other one instead.
 */
export declare abstract class SerializedStorageProviderHelper implements ISerializedStorageProvider {
    getBytes(key: string): Promise<Uint8Array | null>;
    putBytes(key: string, data: Uint8Array): Promise<void>;
    getString(key: string): Promise<string | null>;
    putString(key: string, data: string): Promise<void>;
}