gurubot2/app/config.js

const __PROD__ = process.env.NODE_ENV === 'production';
const __DEV__ = process.env.NODE_ENV === 'development';

if (__DEV__) {
    // eslint-disable-next-line global-require
    require('dotenv').config();
}

module.exports = () => ({
    __PROD__,
    __DEV__,
    mongoUrl: process.env.MONGO_URL || 'mongodb://localhost:27017/gurubot2'
});