/**
 * Process management for stdio-based MCP servers
 */
import { type ChildProcess } from 'node:child_process';
import { EventEmitter } from 'node:events';
import type { StdioServerConfig } from '../types/config.js';
import { type Logger } from '../utils/logger.js';
/**
 * Events emitted by the process manager
 */
export interface ProcessManagerEvents {
    /** Process started successfully */
    started: (pid: number) => void;
    /** Process exited */
    exited: (code: number | null, signal: string | null) => void;
    /** Process error occurred */
    error: (error: Error) => void;
    /** Data received on stderr */
    stderr: (data: string) => void;
}
/**
 * Manages a single stdio process for an MCP server
 */
export declare class ProcessManager extends EventEmitter {
    private config;
    private logger;
    private process;
    private shutdownTimeoutMs;
    constructor(serverName: string, config: StdioServerConfig, shutdownTimeoutMs?: number, logger?: Logger);
    /**
     * Starts the process
     */
    start(): Promise<ChildProcess>;
    /**
     * Stops the process gracefully, with force kill fallback
     */
    stop(): Promise<void>;
    /**
     * Forces the process to stop immediately
     */
    forceStop(): void;
    /**
     * Gets the current process (if running)
     */
    getProcess(): ChildProcess | null;
    /**
     * Gets the process ID (if running)
     */
    getPid(): number | undefined;
    /**
     * Checks if the process is running
     */
    isRunning(): boolean;
    /**
     * Gets the stdin stream for writing to the process
     */
    getStdin(): NodeJS.WritableStream | null;
    /**
     * Gets the stdout stream for reading from the process
     */
    getStdout(): NodeJS.ReadableStream | null;
}
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