Mongo config for local + heroku

db-config.js

var connStr = process.env.MONGOHQ_URL;
var config = {
  name: 'database_name',
  host: 'localhost',
  port: 27017,
  opts: {auto_reconnect: true}
};

if (connStr) {
  var url = require('url');
  var conn = url.parse(connStr);

  config.name = conn.path.replace('/', '');
  config.host = conn.host.replace(/:.*/, '');
  config.port = parseInt(conn.port);
  
  config.user = conn.auth.replace(/:.*/, '');
  config.pass = conn.auth.replace(/.*:/, '');
}

module.exports = config;