server.js

const mongoose = require('mongoose');
const dotenv = require('dotenv');

process.on('uncaughtException', err => {
  console.log('UNCAUGHT EXCEPTIION 🔥  Shutting down...');
  console.log(err.name, err.message, err);
  process.exit(1);
})

dotenv.config({
  path: './config.env'
});
const app = require('./app');

// console.log(process.env);
const DB = process.env.DATABASE.replace(
  '<PASSWORD>',
  process.env.DATABASE_PASSWORD
);

mongoose
  .connect(DB, {
    useNewUrlParser: true,
    useCreateIndex: true,
    useFindAndModify: false,
    useUnifiedTopology: true
  })
  .then(() => {
    console.log('Connetion successful to the database');
  });

const port = process.env.PORT || 8000;

const server = app.listen(port, () => {
  console.log(`The server is up on port ${port}`);
});

process.on('unhandledRejection', err => {
  console.log('UNHANDLED REJECTION 🔥  Shutting down...');
  console.log(err.name, err.message);
  server.close(() => {
    process.exit(1);
  })
});

process.on('SIGTERM', () => {
  console.log('✋ SIGTERM received, shutting down gracefully');
  server.close(() => {
    console.log('🔥 Process terminated!')
  })
})