// 需要忽略的資料夾
var ignores = '.git,doc,tool,coffee'.split(',')

// 有時候修改檔案後會連續回撥兩次，用這個時間過濾掉第二次重複的回撥
var lastUpdateTime = 0;

function watch(dir) {
  fs.watch(dir, (event, filename)=> {
    if (ignores.includes(filename)) return
    var diff = Date.now() - lastUpdateTime
    lastUpdateTime = Date.now()
    if
 
 (diff < 100) return
    console.log('event is: ' + event + 'filename:' + filename + ' now:' + Date.now());
    // TODO: do anything ...
  })

  // 原生監控不能監控到子資料夾中的檔案改變事件，遍歷之
  var files = fs.readdirSync(dir);
  for (var i = 0; i < files.length; i++) {
    if (ignores.includes(files[i])) continue
    var
 
 file = dir + '/' + files[i]
    var stat = fs.statSync(file)
    if (stat.isDirectory() == true) {
      watch(file);
    }
  }
}

// 開始監控當前目錄
watch('.')
console.log('start watch...');