process.stderr


process.stderr 属性返回连接到 stderr (fd 2) 的流。 它是一个 net.Socket 流(也就是双工流),除非 fd 2 指向一个文件,在这种情况下它是一个可写流

process.stderr 与其他的 Node.js 流有重大区别。 有关更多信息,参阅有关进程 I/O 的注意事项

The process.stderr property returns a stream connected to stderr (fd 2). It is a net.Socket (which is a Duplex stream) unless fd 2 refers to a file, in which case it is a Writable stream.

process.stderr differs from other Node.js streams in important ways. See note on process I/O for more information.