/**
 * Local file-based storage provider
 * Implements atomic writes using temp file + rename pattern
 */
import type { StorageProvider, VersionInfo } from '../types/storage.js';
/**
 * Local file storage implementation
 * Stores data as JSON files in the filesystem
 */
export declare class LocalFileStorage implements StorageProvider {
    private readonly baseDir;
    constructor(baseDir: string);
    /**
     * Get the full file path for a key
     */
    private getPath;
    /**
     * Get the version directory for a key
     */
    private getVersionDir;
    /**
     * Get the version file path
     */
    private getVersionPath;
    /**
     * Ensure a directory exists
     */
    private ensureDir;
    /**
     * Get a value by key
     */
    get<T>(key: string): Promise<T | null>;
    /**
     * Set a value by key using atomic write (temp file + rename)
     */
    set<T>(key: string, value: T): Promise<void>;
    /**
     * Delete a value by key
     */
    delete(key: string): Promise<void>;
    /**
     * List all keys with a given prefix
     */
    list(prefix: string): Promise<string[]>;
    /**
     * Check if a key exists
     */
    exists(key: string): Promise<boolean>;
    /**
     * Get a specific version of a value
     */
    getVersion<T>(key: string, version: number): Promise<T | null>;
    /**
     * List all versions for a key
     */
    listVersions(key: string): Promise<VersionInfo[]>;
    /**
     * Create a new version for a key (copies current value to version file)
     * Returns the new version number
     */
    createVersion(key: string): Promise<number>;
}
//# sourceMappingURL=LocalFileStorage.d.ts.map