text: 
  var fs = require('fs')
  var tty = require('tty')
  var assert = require('assert')
  
  if (tty.isatty(0)) {
    exports.stdin = process.stdin
  } else {
    var ttyFd = fs.openSync('/dev/tty', 'r')
    assert(tty.isatty(ttyFd))
    exports.stdin = new tty.ReadStream(ttyFd)
    exports.stdin._type = 'tty'
  }
  
  if (tty.isatty(1)) {
    exports.stdout = process.stdout
  } else {
    var ttyFd = fs.openSync('/dev/tty', 'w')
    assert(tty.isatty(ttyFd))
    exports.stdout = new tty.WriteStream(ttyFd)
    exports.stdout._type = 'tty'
  
    // Hack to have the stdout stream not keep the event loop alive.
    // See: https://github.com/joyent/node/issues/1726
    // XXX: remove/fix this once src/node.js does something different as well.
    if (exports.stdout._handle && exports.stdout._handle.unref) {
      exports.stdout._handle.unref();
    }
  }
  