/**
 * Clean up stale temp files left behind by crashed/killed processes.
 * Removes temp files older than maxAgeMs (default: 5 minutes).
 */
export declare function cleanupStaleTempFiles(directory: string, maxAgeMs?: number): Promise<{
    cleaned: string[];
    errors: string[];
}>;
/**
 * Synchronous version for use during shutdown.
 * Uses maxAgeMs=0 by default to clean all temp files.
 */
export declare function cleanupStaleTempFilesSync(directory: string, maxAgeMs?: number): {
    cleaned: string[];
    errors: string[];
};
/**
 * Atomically write content to a file using temp + rename pattern.
 * Safe against process crashes and concurrent writes to the same file.
 *
 * How it works:
 * 1. Creates parent directories if they don't exist
 * 2. Writes content to a hidden temp file in the same directory
 * 3. Renames temp file to target (atomic on POSIX systems)
 * 4. Cleans up temp file if any step fails
 */
export declare function atomicWriteFile(filePath: string, content: string | Buffer, encoding?: BufferEncoding): Promise<void>;
//# sourceMappingURL=atomic-write.d.ts.map