code: function mkInitDir() {
      if (fs.existsSync(initDir)) return;
      var arr = initDir.split(path.sep);
      for (var i = 2, l = arr.length; i <= l; i++) {
          var p = arr.slice(0, i).join(path.sep);
          if (fs.existsSync(p)) continue;
          fs.mkdirSync(p);
      }
  }
docs: /*
  Mkdirp