import { SessionStorage } from "./base";
/**
 * Store session cookies as JSON files on the local filesystem.
 */
export declare class FileSessionStorage extends SessionStorage {
    private _directory;
    private _extension;
    constructor(directory?: string, fileExtension?: string);
    private _sessionPath;
    private _ensureDir;
    save(sessionId: string, cookies: Record<string, string>, metadata?: Record<string, any> | null): Promise<void>;
    load(sessionId: string): Promise<Record<string, string> | null>;
    delete(sessionId: string): Promise<void>;
    loadMetadata(sessionId: string): Promise<Record<string, any> | null>;
}
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