dbConfig.js

const mongoose = require('mongoose');

const MONGO_URL = `mongodb://${process.env.MONGODB_SERVER || 'localhost'}:${process.env.MONGODB_PORT}/${process.env.MONGODB_DATABASE}`;

const mongoOptions = {
    user: process.env.MONGODB_USER,
    pass: process.env.MONGODB_PASSWORD,
    useCreateIndex: true,
    useNewUrlParser: true,
    useUnifiedTopology: true,
};

const connectDb = () => mongoose.connect(MONGO_URL, mongoOptions);

module.exports = connectDb;