// file services.js
export default {
  mongodb: {
    development: {
      host: '0.0.0.0',
      port: 27017,
    },
    production: {
      host: '0.0.0.0',
      port: 27017,
    }
  }
};

// app.js
import { mongodb } from './services'; // mongodb -> undefined
import services from './services'; services.mongodb -> {...}

// exec
babel-node app.js

//.babelrc

{
  "presets": ["env", "stage-0"],
  "plugins": ["transform-async-to-generator"]
}

node v8.9.3