util.getSystemErrorName(err)
返回来自 Node.js API 的数字错误代码对应的字符串名称。错误代码与错误名称之间的映射依赖于平台。有关常见错误的名称,请参见 常见系统错误。
【Returns the string name for a numeric error code that comes from a 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 name = util.getSystemErrorName(err.errno);
console.error(name); // ENOENT
});