Config with dot getter and setter

development.js

// DEVELOPMENT
module.exports = exports = {
  "db": {
    "connection1": {
      "driver": "mongodb",
      "url": "mongodb://localhost:27017/database_dev"
    },
    "connection2": {
      "driver": "redis",
      "url": "redis://localhost"
    }
  }
};

index.js

var env = process.env.NODE_ENV || 'development';

var _parseKeys = function (str) {
  if (/\./.test(str)) return str.split('.');
  return;
};

var _getter =function (key, obj) {
  var keys = _parseKeys(key);
  if (keys) return _getter(keys.slice(1), obj[keys[0]]);
  return obj[key];
};

var _setter = function (key, val, obj) {
  var keys = _parseKeys(key);
  if (keys) {
    if (!obj[keys[0]] || typeof obj[keys[0]] !== 'object') {
      obj[keys[0]] = {};
    }
    return _setter(keys.slice(1), val, obj[keys[0]]);
  }
  obj[key] = val;
  return;
};

var config = module.exports = exports = require('./' + env);
config.env = env;
config.get = function (key) {
  return _getter(key, this);
};

config.set = function (key, val) {
  _setter(key, val, this);
  return this;
};