/**
 * Single read/write path for clusters.json.
 *
 * All callers that need the raw registry (Orchestrator, id-detector, gc,
 * socket-discovery, CLI) go through readClustersFileSync/writeClustersFileAtomic
 * instead of ad-hoc JSON.parse(fs.readFileSync(...)) / fs.writeFileSync(...).
 *
 * Writes are atomic (temp file + rename) so a reader can never observe a
 * partially-written file, even without taking the write lock. Callers that
 * read-modify-write (Orchestrator._saveClusters) still need proper-lockfile
 * around the whole operation to avoid losing concurrent updates.
 */
declare function clustersFilePath(storageDir: string): string;
/** Read clusters.json. Returns an empty registry if the file is missing. */
declare function readClustersFileSync(storageDir: string): unknown;
/** Write clusters.json atomically through a process-scoped temporary file. */
declare function writeClustersFileAtomic(storageDir: string, data: unknown): void;
declare const _default: {
    clustersFilePath: typeof clustersFilePath;
    readClustersFileSync: typeof readClustersFileSync;
    writeClustersFileAtomic: typeof writeClustersFileAtomic;
};
export = _default;