メンドイのでSpidermonkeyで実行。
#!/usr/bin/env js                                                             
var human = function() {                                                      
  var that = {}                                                               
  that.say = function() {
    print('Hello!')
    return that
  }
  return that
}
var employee = function() {
  var that = human()
  that.has_work = true
  return that
}
var neet = function() {
  var that = human()
  that.has_work = false
  that.say = function() {
    print('絶対に働きたくないでござる!')
    return that
  }
  return that
}
human().say()
employee().say()
neet().say()Hello!
Hello!
絶対に働きたくないでござる!簡単。
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