#!/usr/bin/env node
/**
* MCP Server Supervisor
* Transparent proxy that keeps MCP client connections alive during server restarts
*
* Inspired by reloaderoo - provides seamless hot-reloading for MCP servers
*/
import { SupervisorConfig, SupervisorStatus, SupervisorEvent } from './types.js';
/**
* Default supervisor configuration
*/
declare const DEFAULT_SUPERVISOR_CONFIG: SupervisorConfig;
/**
* Supervisor class
* Manages child server process lifecycle and maintains client connections
*/
export declare class Supervisor {
private logger;
private config;
private restartPolicy;
private stdioProxy;
private childProcess?;
private isRunning;
private startTime;
private shutdownTimeout?;
private isShuttingDown;
constructor(config?: Partial<SupervisorConfig>);
/**
* Start supervisor and spawn initial child process
*/
start(): Promise<void>;
/**
* Spawn child server process
*/
private spawnChild;
/**
* Setup child process event handlers
*/
private setupChildHandlers;
/**
* Handle child process exit
*/
private handleChildExit;
/**
* Handle clean restart request (exit code 0)
*/
private handleRestartRequest;
/**
* Handle child process crash (exit code > 0)
*/
private handleCrash;
/**
* Setup signal handlers for graceful shutdown
*/
private setupSignalHandlers;
/**
* Stop supervisor and terminate child gracefully
*/
stop(): Promise<void>;
/**
* Terminate child process gracefully with timeout
*/
private terminateChild;
/**
* Get supervisor status
*/
getStatus(): SupervisorStatus;
/**
* Emit supervisor event (for logging and monitoring)
*/
private emitEvent;
}
export { DEFAULT_SUPERVISOR_CONFIG };
export type { SupervisorConfig, SupervisorStatus, SupervisorEvent };
