/**
 * File system operations for prompt cache (Node.js version).
 *
 * This file is swapped with prompts_cache_fs.browser.ts for browser builds
 * via the package.json browser field.
 */
/**
 * Dump cache entries to a JSON file.
 */
export declare function dumpCache(filePath: string, entries: Record<string, unknown>): void;
/**
 * Load cache entries from a JSON file.
 *
 * @returns The entries object, or null if file doesn't exist or is invalid.
 */
export declare function loadCache(filePath: string): Record<string, unknown> | null;