Failing node-couchapp Kanso application

app.js

// Example node-couchapp Kanso application.
//

var fs = require('fs')

var ddoc = module.exports = { 'views':{} }
fs.readdirSync(__dirname + '/views').forEach(function(file) {
  var match = file.match(/^(.+)\.js$/)
    , mod = match && match[1]

  if(mod)
    ddoc.views[mod] = require('./views/' + file)
})

kanso.json

{ "name"   : "example"
, "version": "0.1.0"
, "description": "Example Kanso app which breaks with node-couchapp"
, "dependencies": { "node-couchapp": "0.8.3"
                  }
, "app": "app"
, "modules_attachment": false
}

views_a_view.js

// XXX: This should be views/a_view.js but Gist wont't let me do that.

exports.map = function(doc) {
  emit(doc._id, 1)
}

exports.reduce = function(keys, vals, rereduce) {
  return null
}