当路径中含有app时mount-middlewares报错。。

[zaaack]

比如我git clone --depth=1 https://github.com/moajs/moa2.git moa2app ,
然后npm start就会报这种错：

Starting child process with 'node ./bin/www'
fs.js:856
  return binding.readdir(pathModule._makeLong(path));
                 ^

Error: ENOENT: no such file or directory, scandir '/Users/z/Projects/Node/moa2app/middlewares'
    at Error (native)
    at Object.fs.readdirSync (fs.js:856:18)
    at requireDirectory (/Users/z/Projects/Node/moa2app/node_modules/require-directory/index.js:59:6)
    at m (/Users/z/Projects/Node/moa2app/node_modules/mount-middlewares/index.js:20:10)
    at Object.<anonymous> (/Users/z/Projects/Node/moa2app/app.js:10:50)
    at Module._compile (module.js:413:34)
    at Object.Module._extensions..js (module.js:422:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Module.require (module.js:367:17)
    at require (internal/module.js:16:19)
    at Object.<anonymous> (/Users/z/Projects/Node/moa2app/bin/www:7:11)
    at Module._compile (module.js:413:34)
    at Object.Module._extensions..js (module.js:422:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Function.Module.runMain (module.js:447:10)
    at startup (node.js:140:18)
    at node.js:1001:3
Program node ./bin/www exited with code 1

然后debug下mound-middlewares源码

var fs = require('fs')
var requireDirectory = require('require-directory')
var debug = require('debug')('mount-middlewares')

function m (dir) {
  var a = dir.split('app') //竟然是用split的。。

  if (a.length > 1) {
    a.pop()
    a.join('app')
  }else {
    if(fs.existsSync(dir + '/app/middlewares')){
      return requireDirectory(module, dir + "/app/middlewares") 
    }

    throw "mount-middlewares ERROR: " + dir + "里没有app目录"
  }
  var _dir = a[0] + "app/middlewares"
  debug(_dir)
  return requireDirectory(module, _dir)
}

module.exports = m