@alcyone-labs/simple-mcp-logger/dist/adapters/index.mjs.map

Logging solution for MCP servers. Prevents console output from corrupting MCP protocol communication. Drop-in replacement for console, Winston, and Pino with automatic STDOUT suppression in MCP mode.

{"version":3,"file":"index.mjs","sources":["../../src/adapters/winston.ts","../../src/adapters/pino.ts"],"sourcesContent":["import { Logger, type LogLevel } from '../SimpleMcpLogger.js';\n\nimport TransportStream from 'winston-transport';\n\ninterface TransportStreamOptions {\n  level?: string;\n  silent?: boolean;\n  handleExceptions?: boolean;\n  handleRejections?: boolean;\n  [key: string]: any;\n}\n\n/**\n * Winston transport that uses SimpleMcpLogger as the underlying logger\n */\nexport class SimpleMcpWinstonTransport extends TransportStream {\n  private logger: Logger;\n  private options: TransportStreamOptions;\n\n  constructor(options: TransportStreamOptions & {\n    mcpMode?: boolean;\n    prefix?: string;\n    logToFile?: string;\n  } = {}) {\n    super(options);\n    this.options = options;\n\n    const level = this.mapWinstonLevelToMcp(options.level || 'info');\n\n    this.logger = new Logger({\n      level,\n      mcpMode: options.mcpMode || false,\n      prefix: options.prefix,\n      logToFile: options.logToFile\n    });\n  }\n\n  /**\n   * Emit method for Winston compatibility\n   */\n  emit(event: string, ...args: any[]): boolean {\n    return super.emit(event, ...args);\n  }\n\n  /**\n   * Map Winston log levels to SimpleMcpLogger levels\n   */\n  private mapWinstonLevelToMcp(winstonLevel: string): LogLevel {\n    const levelMap: Record<string, LogLevel> = {\n      'error': 'error',\n      'warn': 'warn',\n      'info': 'info',\n      'http': 'info',\n      'verbose': 'debug',\n      'debug': 'debug',\n      'silly': 'debug'\n    };\n    \n    return levelMap[winstonLevel] || 'info';\n  }\n\n\n\n  /**\n   * Log method called by Winston\n   */\n  log(info: any, callback?: () => void): void {\n    const level = this.mapWinstonLevelToMcp(info.level);\n    const message = info.message || '';\n\n    // Extract metadata from the info object, excluding Winston-specific fields\n    const { level: _, message: __, timestamp: ___, ...meta } = info;\n\n    // Remove any Symbol properties and other Winston internals\n    const cleanMeta: any = {};\n    for (const [key, value] of Object.entries(meta)) {\n      if (typeof key === 'string' && !key.startsWith('Symbol(') && key !== 'splat') {\n        cleanMeta[key] = value;\n      }\n    }\n\n    const args = Object.keys(cleanMeta).length > 0 ? [cleanMeta] : [];\n\n    switch (level) {\n      case 'debug':\n        this.logger.debug(message, ...args);\n        break;\n      case 'info':\n        this.logger.info(message, ...args);\n        break;\n      case 'warn':\n        this.logger.warn(message, ...args);\n        break;\n      case 'error':\n        this.logger.error(message, ...args);\n        break;\n      default:\n        this.logger.info(message, ...args);\n    }\n\n    // Emit the 'logged' event as expected by Winston\n    setImmediate(() => {\n      this.emit('logged', info);\n    });\n\n    if (callback) {\n      callback();\n    }\n  }\n\n  /**\n   * Set MCP mode\n   */\n  setMcpMode(enabled: boolean): void {\n    this.logger.setMcpMode(enabled);\n  }\n\n  /**\n   * Set log level\n   */\n  setLevel(level: LogLevel): void {\n    this.logger.setLevel(level);\n  }\n\n  /**\n   * Set prefix\n   */\n  setPrefix(prefix: string): void {\n    this.logger.setPrefix(prefix);\n  }\n\n  /**\n   * Create child logger\n   */\n  child(prefix: string): SimpleMcpWinstonTransport {\n    const childLogger = this.logger.child(prefix);\n    const transport = new SimpleMcpWinstonTransport(this.options);\n    transport.logger = childLogger;\n    return transport;\n  }\n\n  /**\n   * Get the underlying SimpleMcpLogger instance\n   */\n  getLogger(): Logger {\n    return this.logger;\n  }\n\n  /**\n   * Set log file path\n   */\n  async setLogFile(filePath: string): Promise<void> {\n    await this.logger.setLogFile(filePath);\n  }\n\n  /**\n   * Close file stream\n   */\n  async close(): Promise<void> {\n    await this.logger.close();\n  }\n}\n\n/**\n * Factory function to create Winston transport\n */\nexport function createWinstonTransport(options: TransportStreamOptions & {\n  mcpMode?: boolean;\n  prefix?: string;\n  logToFile?: string;\n} = {}): SimpleMcpWinstonTransport {\n  return new SimpleMcpWinstonTransport(options);\n}\n","import { Logger, type LogLevel } from '../SimpleMcpLogger.js';\n\n/**\n * Pino transport that uses SimpleMcpLogger as the underlying logger\n */\nexport class SimpleMcpPinoTransport {\n  private logger: Logger;\n  private options: PinoTransportOptions;\n\n  constructor(options: PinoTransportOptions = {}) {\n    this.options = options;\n    const level = this.mapPinoLevelToMcp(options.level || 'info');\n\n    this.logger = new Logger({\n      level,\n      mcpMode: options.mcpMode || false,\n      prefix: options.prefix,\n      logToFile: options.logToFile\n    });\n  }\n\n  /**\n   * Map Pino log levels to SimpleMcpLogger levels\n   */\n  private mapPinoLevelToMcp(pinoLevel: string | number): LogLevel {\n    if (typeof pinoLevel === 'number') {\n      if (pinoLevel >= 60) return 'error';\n      if (pinoLevel >= 50) return 'error';\n      if (pinoLevel >= 40) return 'warn';\n      if (pinoLevel >= 30) return 'info';\n      if (pinoLevel >= 20) return 'debug';\n      return 'debug';\n    }\n    \n    const levelMap: Record<string, LogLevel> = {\n      'fatal': 'error',\n      'error': 'error',\n      'warn': 'warn',\n      'info': 'info',\n      'debug': 'debug',\n      'trace': 'debug'\n    };\n    \n    return levelMap[pinoLevel] || 'info';\n  }\n\n  /**\n   * Transform function for Pino transport\n   */\n  transform(chunk: any): void {\n    try {\n      const logObj = typeof chunk === 'string' ? JSON.parse(chunk) : chunk;\n      const level = this.mapPinoLevelToMcp(logObj.level);\n      const message = logObj.msg || '';\n\n      // Extract metadata from the log object, excluding Pino-specific fields\n      const { level: _, msg: __, time: ___, hostname: ____, pid: _____, ...meta } = logObj;\n\n      // Remove any other Pino internals that might be present\n      const cleanMeta: any = {};\n      for (const [key, value] of Object.entries(meta)) {\n        if (typeof key === 'string' && !key.startsWith('Symbol(') && key !== 'v') {\n          cleanMeta[key] = value;\n        }\n      }\n\n      const args = Object.keys(cleanMeta).length > 0 ? [cleanMeta] : [];\n\n      switch (level) {\n        case 'debug':\n          this.logger.debug(message, ...args);\n          break;\n        case 'info':\n          this.logger.info(message, ...args);\n          break;\n        case 'warn':\n          this.logger.warn(message, ...args);\n          break;\n        case 'error':\n          this.logger.error(message, ...args);\n          break;\n        default:\n          this.logger.info(message, ...args);\n      }\n    } catch (error) {\n      this.logger.error('Failed to parse log message', error);\n    }\n  }\n\n  /**\n   * Set MCP mode\n   */\n  setMcpMode(enabled: boolean): void {\n    this.logger.setMcpMode(enabled);\n  }\n\n  /**\n   * Set log level\n   */\n  setLevel(level: LogLevel): void {\n    this.logger.setLevel(level);\n  }\n\n  /**\n   * Set prefix\n   */\n  setPrefix(prefix: string): void {\n    this.logger.setPrefix(prefix);\n  }\n\n  /**\n   * Create child logger\n   */\n  child(prefix: string): SimpleMcpPinoTransport {\n    const childLogger = this.logger.child(prefix);\n    const transport = new SimpleMcpPinoTransport(this.options);\n    transport.logger = childLogger;\n    return transport;\n  }\n\n  /**\n   * Get the underlying SimpleMcpLogger instance\n   */\n  getLogger(): Logger {\n    return this.logger;\n  }\n\n  /**\n   * Set log file path\n   */\n  async setLogFile(filePath: string): Promise<void> {\n    await this.logger.setLogFile(filePath);\n  }\n\n  /**\n   * Close file stream\n   */\n  async close(): Promise<void> {\n    await this.logger.close();\n  }\n}\n\n/**\n * Options for Pino transport\n */\nexport interface PinoTransportOptions {\n  level?: LogLevel;\n  mcpMode?: boolean;\n  prefix?: string;\n  logToFile?: string;\n}\n\n/**\n * Factory function to create Pino transport\n */\nexport function createPinoTransport(options: PinoTransportOptions = {}): SimpleMcpPinoTransport {\n  return new SimpleMcpPinoTransport(options);\n}\n\n/**\n * Create a Pino destination that uses SimpleMcpLogger\n */\nexport function createPinoDestination(options: PinoTransportOptions = {}) {\n  const transport = new SimpleMcpPinoTransport(options);\n  \n  return {\n    write(chunk: any) {\n      transport.transform(chunk);\n    },\n    async end() {\n      await transport.close();\n    },\n    async destroy() {\n      await transport.close();\n    }\n  };\n}\n\n/**\n * Create a Pino logger that uses SimpleMcpLogger as the underlying transport\n * Note: This function requires Pino to be installed and available in the environment\n *\n * @deprecated This function uses dynamic imports which are not bundler-friendly.\n * Instead, import Pino directly in your application and use createPinoDestination:\n *\n * ```typescript\n * import pino from 'pino';\n * import { createPinoDestination } from '@alcyone-labs/simple-mcp-logger';\n *\n * const destination = createPinoDestination({ level: 'info' });\n * const logger = pino({ level: 'info' }, destination);\n * ```\n */\nexport function createPinoLogger(_options: PinoTransportOptions & {\n  name?: string;\n} = {}) {\n  // Check if we're in a browser environment\n  if (typeof window !== 'undefined') {\n    throw new Error('createPinoLogger is not supported in browser environments. Use createPinoDestination with a browser-compatible Pino build instead.');\n  }\n\n  // Throw an error encouraging users to import Pino directly for better bundling\n  throw new Error(\n    'createPinoLogger is deprecated for bundling compatibility. ' +\n    'Please import Pino directly and use createPinoDestination instead:\\n\\n' +\n    'import pino from \\'pino\\';\\n' +\n    'import { createPinoDestination } from \\'@alcyone-labs/simple-mcp-logger\\';\\n\\n' +\n    'const destination = createPinoDestination({ level: \\'info\\' });\\n' +\n    'const logger = pino({ level: \\'info\\' }, destination);'\n  );\n}\n"],"names":[],"mappings":";;AAeO,MAAM,kCAAkC,gBAAgB;AAAA,EAI7D,YAAY,UAIR,IAAI;AACN,UAAM,OAAO;AACb,SAAK,UAAU;AAEf,UAAM,QAAQ,KAAK,qBAAqB,QAAQ,SAAS,MAAM;AAE/D,SAAK,SAAS,IAAI,OAAO;AAAA,MACvB;AAAA,MACA,SAAS,QAAQ,WAAW;AAAA,MAC5B,QAAQ,QAAQ;AAAA,MAChB,WAAW,QAAQ;AAAA,IAAA,CACpB;AAAA,EACH;AAAA;AAAA;AAAA;AAAA,EAKA,KAAK,UAAkB,MAAsB;AAC3C,WAAO,MAAM,KAAK,OAAO,GAAG,IAAI;AAAA,EAClC;AAAA;AAAA;AAAA;AAAA,EAKQ,qBAAqB,cAAgC;AAC3D,UAAM,WAAqC;AAAA,MACzC,SAAS;AAAA,MACT,QAAQ;AAAA,MACR,QAAQ;AAAA,MACR,QAAQ;AAAA,MACR,WAAW;AAAA,MACX,SAAS;AAAA,MACT,SAAS;AAAA,IAAA;AAGX,WAAO,SAAS,YAAY,KAAK;AAAA,EACnC;AAAA;AAAA;AAAA;AAAA,EAOA,IAAI,MAAW,UAA6B;AAC1C,UAAM,QAAQ,KAAK,qBAAqB,KAAK,KAAK;AAClD,UAAM,UAAU,KAAK,WAAW;AAGhC,UAAM,EAAE,OAAO,GAAG,SAAS,IAAI,WAAW,KAAK,GAAG,KAAA,IAAS;AAG3D,UAAM,YAAiB,CAAA;AACvB,eAAW,CAAC,KAAK,KAAK,KAAK,OAAO,QAAQ,IAAI,GAAG;AAC/C,UAAI,OAAO,QAAQ,YAAY,CAAC,IAAI,WAAW,SAAS,KAAK,QAAQ,SAAS;AAC5E,kBAAU,GAAG,IAAI;AAAA,MACnB;AAAA,IACF;AAEA,UAAM,OAAO,OAAO,KAAK,SAAS,EAAE,SAAS,IAAI,CAAC,SAAS,IAAI,CAAA;AAE/D,YAAQ,OAAA;AAAA,MACN,KAAK;AACH,aAAK,OAAO,MAAM,SAAS,GAAG,IAAI;AAClC;AAAA,MACF,KAAK;AACH,aAAK,OAAO,KAAK,SAAS,GAAG,IAAI;AACjC;AAAA,MACF,KAAK;AACH,aAAK,OAAO,KAAK,SAAS,GAAG,IAAI;AACjC;AAAA,MACF,KAAK;AACH,aAAK,OAAO,MAAM,SAAS,GAAG,IAAI;AAClC;AAAA,MACF;AACE,aAAK,OAAO,KAAK,SAAS,GAAG,IAAI;AAAA,IAAA;AAIrC,iBAAa,MAAM;AACjB,WAAK,KAAK,UAAU,IAAI;AAAA,IAC1B,CAAC;AAED,QAAI,UAAU;AACZ,eAAA;AAAA,IACF;AAAA,EACF;AAAA;AAAA;AAAA;AAAA,EAKA,WAAW,SAAwB;AACjC,SAAK,OAAO,WAAW,OAAO;AAAA,EAChC;AAAA;AAAA;AAAA;AAAA,EAKA,SAAS,OAAuB;AAC9B,SAAK,OAAO,SAAS,KAAK;AAAA,EAC5B;AAAA;AAAA;AAAA;AAAA,EAKA,UAAU,QAAsB;AAC9B,SAAK,OAAO,UAAU,MAAM;AAAA,EAC9B;AAAA;AAAA;AAAA;AAAA,EAKA,MAAM,QAA2C;AAC/C,UAAM,cAAc,KAAK,OAAO,MAAM,MAAM;AAC5C,UAAM,YAAY,IAAI,0BAA0B,KAAK,OAAO;AAC5D,cAAU,SAAS;AACnB,WAAO;AAAA,EACT;AAAA;AAAA;AAAA;AAAA,EAKA,YAAoB;AAClB,WAAO,KAAK;AAAA,EACd;AAAA;AAAA;AAAA;AAAA,EAKA,MAAM,WAAW,UAAiC;AAChD,UAAM,KAAK,OAAO,WAAW,QAAQ;AAAA,EACvC;AAAA;AAAA;AAAA;AAAA,EAKA,MAAM,QAAuB;AAC3B,UAAM,KAAK,OAAO,MAAA;AAAA,EACpB;AACF;AAKO,SAAS,uBAAuB,UAInC,IAA+B;AACjC,SAAO,IAAI,0BAA0B,OAAO;AAC9C;ACvKO,MAAM,uBAAuB;AAAA,EAIlC,YAAY,UAAgC,IAAI;AAC9C,SAAK,UAAU;AACf,UAAM,QAAQ,KAAK,kBAAkB,QAAQ,SAAS,MAAM;AAE5D,SAAK,SAAS,IAAI,OAAO;AAAA,MACvB;AAAA,MACA,SAAS,QAAQ,WAAW;AAAA,MAC5B,QAAQ,QAAQ;AAAA,MAChB,WAAW,QAAQ;AAAA,IAAA,CACpB;AAAA,EACH;AAAA;AAAA;AAAA;AAAA,EAKQ,kBAAkB,WAAsC;AAC9D,QAAI,OAAO,cAAc,UAAU;AACjC,UAAI,aAAa,GAAI,QAAO;AAC5B,UAAI,aAAa,GAAI,QAAO;AAC5B,UAAI,aAAa,GAAI,QAAO;AAC5B,UAAI,aAAa,GAAI,QAAO;AAC5B,UAAI,aAAa,GAAI,QAAO;AAC5B,aAAO;AAAA,IACT;AAEA,UAAM,WAAqC;AAAA,MACzC,SAAS;AAAA,MACT,SAAS;AAAA,MACT,QAAQ;AAAA,MACR,QAAQ;AAAA,MACR,SAAS;AAAA,MACT,SAAS;AAAA,IAAA;AAGX,WAAO,SAAS,SAAS,KAAK;AAAA,EAChC;AAAA;AAAA;AAAA;AAAA,EAKA,UAAU,OAAkB;AAC1B,QAAI;AACF,YAAM,SAAS,OAAO,UAAU,WAAW,KAAK,MAAM,KAAK,IAAI;AAC/D,YAAM,QAAQ,KAAK,kBAAkB,OAAO,KAAK;AACjD,YAAM,UAAU,OAAO,OAAO;AAG9B,YAAM,EAAE,OAAO,GAAG,KAAK,IAAI,MAAM,KAAK,UAAU,MAAM,KAAK,OAAO,GAAG,SAAS;AAG9E,YAAM,YAAiB,CAAA;AACvB,iBAAW,CAAC,KAAK,KAAK,KAAK,OAAO,QAAQ,IAAI,GAAG;AAC/C,YAAI,OAAO,QAAQ,YAAY,CAAC,IAAI,WAAW,SAAS,KAAK,QAAQ,KAAK;AACxE,oBAAU,GAAG,IAAI;AAAA,QACnB;AAAA,MACF;AAEA,YAAM,OAAO,OAAO,KAAK,SAAS,EAAE,SAAS,IAAI,CAAC,SAAS,IAAI,CAAA;AAE/D,cAAQ,OAAA;AAAA,QACN,KAAK;AACH,eAAK,OAAO,MAAM,SAAS,GAAG,IAAI;AAClC;AAAA,QACF,KAAK;AACH,eAAK,OAAO,KAAK,SAAS,GAAG,IAAI;AACjC;AAAA,QACF,KAAK;AACH,eAAK,OAAO,KAAK,SAAS,GAAG,IAAI;AACjC;AAAA,QACF,KAAK;AACH,eAAK,OAAO,MAAM,SAAS,GAAG,IAAI;AAClC;AAAA,QACF;AACE,eAAK,OAAO,KAAK,SAAS,GAAG,IAAI;AAAA,MAAA;AAAA,IAEvC,SAAS,OAAO;AACd,WAAK,OAAO,MAAM,+BAA+B,KAAK;AAAA,IACxD;AAAA,EACF;AAAA;AAAA;AAAA;AAAA,EAKA,WAAW,SAAwB;AACjC,SAAK,OAAO,WAAW,OAAO;AAAA,EAChC;AAAA;AAAA;AAAA;AAAA,EAKA,SAAS,OAAuB;AAC9B,SAAK,OAAO,SAAS,KAAK;AAAA,EAC5B;AAAA;AAAA;AAAA;AAAA,EAKA,UAAU,QAAsB;AAC9B,SAAK,OAAO,UAAU,MAAM;AAAA,EAC9B;AAAA;AAAA;AAAA;AAAA,EAKA,MAAM,QAAwC;AAC5C,UAAM,cAAc,KAAK,OAAO,MAAM,MAAM;AAC5C,UAAM,YAAY,IAAI,uBAAuB,KAAK,OAAO;AACzD,cAAU,SAAS;AACnB,WAAO;AAAA,EACT;AAAA;AAAA;AAAA;AAAA,EAKA,YAAoB;AAClB,WAAO,KAAK;AAAA,EACd;AAAA;AAAA;AAAA;AAAA,EAKA,MAAM,WAAW,UAAiC;AAChD,UAAM,KAAK,OAAO,WAAW,QAAQ;AAAA,EACvC;AAAA;AAAA;AAAA;AAAA,EAKA,MAAM,QAAuB;AAC3B,UAAM,KAAK,OAAO,MAAA;AAAA,EACpB;AACF;AAeO,SAAS,oBAAoB,UAAgC,IAA4B;AAC9F,SAAO,IAAI,uBAAuB,OAAO;AAC3C;AAKO,SAAS,sBAAsB,UAAgC,IAAI;AACxE,QAAM,YAAY,IAAI,uBAAuB,OAAO;AAEpD,SAAO;AAAA,IACL,MAAM,OAAY;AAChB,gBAAU,UAAU,KAAK;AAAA,IAC3B;AAAA,IACA,MAAM,MAAM;AACV,YAAM,UAAU,MAAA;AAAA,IAClB;AAAA,IACA,MAAM,UAAU;AACd,YAAM,UAAU,MAAA;AAAA,IAClB;AAAA,EAAA;AAEJ;AAiBO,SAAS,iBAAiB,WAE7B,IAAI;AAEN,MAAI,OAAO,WAAW,aAAa;AACjC,UAAM,IAAI,MAAM,oIAAoI;AAAA,EACtJ;AAGA,QAAM,IAAI;AAAA,IACR;AAAA,EAAA;AAOJ;"}