Xdebug MCP Server

/** * Logger utility that writes to stderr (stdout is reserved for MCP JSON-RPC) */ export type LogLevel = 'debug' | 'info' | 'warn' | 'error'; const LOG_LEVELS: Record<LogLevel, number> = { debug: 0, info: 1, warn: 2, error: 3, }; class Logger { private level: LogLevel = 'info'; setLevel(level: LogLevel): void { this.level = level; } private shouldLog(level: LogLevel): boolean { return LOG_LEVELS[level] >= LOG_LEVELS[this.level]; } private formatMessage(level: LogLevel, message: string, ...args: unknown[]): string { const timestamp = new Date().toISOString(); const formattedArgs = args.length > 0 ? ' ' + args.map(arg => typeof arg === 'object' ? JSON.stringify(arg) : String(arg) ).join(' ') : ''; return `[${timestamp}] [${level.toUpperCase()}] ${message}${formattedArgs}`; } debug(message: string, ...args: unknown[]): void { if (this.shouldLog('debug')) { console.error(this.formatMessage('debug', message, ...args)); } } info(message: string, ...args: unknown[]): void { if (this.shouldLog('info')) { console.error(this.formatMessage('info', message, ...args)); } } warn(message: string, ...args: unknown[]): void { if (this.shouldLog('warn')) { console.error(this.formatMessage('warn', message, ...args)); } } error(message: string, ...args: unknown[]): void { if (this.shouldLog('error')) { console.error(this.formatMessage('error', message, ...args)); } } } export const logger = new Logger();