import { OfflineQueueStorageStrategy } from "./OfflineQueueStorageStrategy.js";
export declare class FileOfflineStorage<T = any> extends OfflineQueueStorageStrategy<T> {
    readonly dir: string;
    readonly filePath: string;
    constructor(filename?: string, dir?: string);
    private _ensureDirectoryExists;
    private _readFile;
    private _writeFile;
    loadQueue(): Promise<T[]>;
    saveQueue(queue: T[]): Promise<void>;
}