process.stdout.pipe导致＆＃34;错误：此套接字已关闭＆＃34;

Question

我做错了什么？给出以下咖啡脚本：

logrotate = require 'logrotate-stream'
toLogFile = logrotate { file: 'wallboard.log', size: '20m', keep: 10}

console.log "Test before"
process.stdout.pipe toLogFile
console.log "Test after"

这就是：

Test before
Error: This socket is closed.
  at WriteStream.Socket._writeGeneric (net.js:628:19)
  at WriteStream.Socket._write (net.js:679:8)
  at doWrite (_stream_writable.js:265:12)
  at writeOrBuffer (_stream_writable.js:252:5)
  at WriteStream.Writable.write (_stream_writable.js:197:11)
  at WriteStream.Socket.write (net.js:606:40)
  at Console.log (console.js:53:16)
  at Object.<anonymous> (c:\vmcommon\dev\node\wallboard\_test_stdout.coffee:6:9)
  at Object.<anonymous> (c:\vmcommon\dev\node\wallboard\_test_stdout.coffee:1:1)
  at Module._compile (module.js:449:26)

为什么没有按预期工作process.stdout.pipe？

我正在尝试使用NPM: logrotate-stream将所有控制台输出重定向到一个文件，该文件应由库旋转。