Recursively read directory using generators, co and thunkify

readdirr.js

var fs = require('fs')
  , path = require('path')
  , co = require('co')
  , thunkify = require('thunkify')
  , readdir = thunkify(fs.readdir)
  , stat = thunkify(fs.stat)


var recursive = co.wrap(function* (root) {
  var dirs = [], files = []
  dirs.push(root)

  var readdirr = co.wrap(function* (root) {
    var items = yield readdir(root)
    for (var i=0; i < items.length; i++) {
      var fpath = path.join(root, items[i])
      var stats = yield stat(fpath)
      if (stats.isDirectory()) {
        dirs.push(fpath)
        yield readdirr(fpath)
      } else {
        files.push(fpath)
      }
    }
    return {dirs:dirs, files:files}
  })

  return readdirr(root)
    .then(function (result) {return result})
    .catch(function (err) {throw err})
})


// run
var root = '/absolute/path/to/some/dir/you/want/to/read'

recursive(root)
  .then(function (result) {console.log(result)})
  .catch(function (err) {console.log(err)})

Oh, I'm sorry, all is right here, I tested this code one more. Only anyone should use recursive method with yield: var result; yield recursive(root).then(f(result){result=result})....