XHS MCP

/** * Logger for XHS MCP Server * Avoids logging to stderr in stdio mode to prevent interference with MCP protocol */ export class Logger { private static instance: Logger; private enabled: boolean = false; private constructor() { // Only enable logging if not in stdio mode // In stdio mode, we suppress all logging to avoid interfering with MCP protocol this.enabled = process.env.XHS_ENABLE_LOGGING === 'true'; } public static getInstance(): Logger { if (!Logger.instance) { Logger.instance = new Logger(); } return Logger.instance; } public debug(message: string, ...args: unknown[]): void { if (this.enabled) { console.error(`[DEBUG] ${message}`, ...args); } } public info(message: string, ...args: unknown[]): void { if (this.enabled) { console.error(`[INFO] ${message}`, ...args); } } public warn(message: string, ...args: unknown[]): void { if (this.enabled) { console.error(`[WARN] ${message}`, ...args); } } public error(message: string, ...args: unknown[]): void { if (this.enabled) { console.error(`[ERROR] ${message}`, ...args); } } } export const logger = Logger.getInstance();