Node.js express useragent结果全部为假？

我使用的是Node js，我需要用户代理的详细信息，我使用的是express useragent。 结果所有的键都是假的，比如isMobile:false，isDesktop:false。我正在从笔记本电脑上点击服务。我得到了结果

{ isYaBrowser: false,
  isAuthoritative: true,
  isMobile: false,
  isMobileNative: false,
  isTablet: false,
  isiPad: false,
  isiPod: false,
  isiPhone: false,
  isiPhoneNative: false,
  isAndroid: false,
  isAndroidNative: false,
  isBlackberry: false,
  isOpera: false,
  isIE: false,
  isEdge: false,
  isIECompatibilityMode: false,
  isSafari: false,
  isFirefox: false,
  isWebkit: false,
  isChrome: false,
  isKonqueror: false,
  isOmniWeb: false,
  isSeaMonkey: false,
  isFlock: false,
  isAmaya: false,
  isPhantomJS: false,
  isEpiphany: false,
  isDesktop: false,
  isWindows: false,
  isLinux: false,
  isLinux64: false,
  isMac: false,
  isChromeOS: false,
  isBada: false,
  isSamsung: false,
  isRaspberry: false,
  isBot: false,
  isCurl: false,
  isAndroidTablet: false,
  isWinJs: false,
  isKindleFire: false,
  isSilk: false,
  isCaptive: false,
  isSmartTV: false,
  isUC: false,
  isFacebook: false,
  isAlamoFire: false,
  isElectron: false,
  silkAccelerated: false,
  browser: 'unknown',
  version: 'unknown',
  os: 'unknown',
  platform: 'unknown',
  geoIp: {},
  source: '',
  isWechat: false }

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你解析HTTP头了吗？您需要在问题中添加代码