util.getSystemErrorMap()

• 返回：<Map>

  ¥Returns: <Map>

返回来自 Node.js API 的可用的所有系统错误码的映射。错误码和错误名称之间的映射是平台相关的。常见错误名称见 常见系统错误。

¥Returns a Map of all system error codes available from the Node.js API. The mapping between error codes and error names is platform-dependent. See Common System Errors for the names of common errors.

fs.access('file/that/does/not/exist', (err) => {
  const errorMap = util.getSystemErrorMap();
  const name = errorMap.get(err.errno);
  console.error(name);  // ENOENT
}); 拷贝