import { Command } from 'commander';
/**
 * CLI command for restarting the MCP Hub Lite server.
 *
 * This command provides a convenient way to stop the currently running MCP Hub Lite
 * service and start it again with the same or modified configuration. It handles
 * the graceful shutdown of the existing process and initiates a new server instance.
 *
 * The restart operation follows these steps:
 * 1. Validates the provided command-line options
 * 2. Sends a termination signal to the currently running server process (if any)
 * 3. Waits for the process to gracefully shut down
 * 4. Starts a new server instance with the specified configuration
 * 5. Provides feedback on the restart operation status
 *
 * @remarks
 * - If no server is currently running, the command will simply start a new instance
 * - The command uses the PID file mechanism to identify and manage the server process
 * - All configuration options are passed through to the underlying server restart function
 * - Error handling ensures proper exit codes and user-friendly error messages
 *
 * @example
 * ```bash
 * # Basic restart with default settings
 * mcp-hub-lite restart
 *
 * # Restart with custom port and host
 * mcp-hub-lite restart --port 8080 --host 0.0.0.0
 *
 * # Restart with custom configuration file
 * mcp-hub-lite restart --config ./custom-config.json
 *
 * # Combined options
 * mcp-hub-lite restart --port 9000 --host localhost --config /path/to/config.json
 * ```
 *
 * @see {@link restartServer} - The underlying server restart implementation
 * @see {@link src/config/config-manager.ts} - Configuration management system
 * @see {@link src/pid/manager.ts} - Process ID management utilities
 */
export declare const restartCommand: Command;
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