import { IPersistedMessages, IPersistence } from "./persistence";
export declare class TempDirectoryPersistence implements IPersistence {
    private persistedMessages?;
    prepare(): Promise<void>;
    getPersistedMessages(): Promise<IPersistedMessages>;
    persistMessage(wsId: string, message: string): Promise<void>;
    purgePersistedMessage(wsId: string): Promise<void>;
}