@kapvm/create-express-app/template/server.js

A CLI tool to scaffold an Express.js boilerplate project

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

//Handling the syntax errors by using process thread;s event handling
process.on('uncaughtException', (err) => {
  console.log('UNHANDLED EXCEPTION ERROR 💥');
  console.log(err.name, '=>', err.message);
  process.exit(1);
});

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

const DB =
  process.env.DATABASE_TYPE === 'cloud'
    ? process.env.DATABASE.replace('<PASSWORD>', process.env.DATABASE_PASSWORD)
    : process.env.DATABASE_LOCAL;

mongoose
  .connect(DB, {
    useCreateIndex: true,
    useNewUrlParser: true,
    useFindAndModify: false,
    useUnifiedTopology: true,
  })
  .then((con) =>
    console.log(
      process.env.DATABASE_TYPE.toUpperCase() +
        ' Database Connection Successful',
    ),
  );

//==>
// Listening to URL
const port = process.env.PORT || 8000;
const server = app.listen(port, () => {
  console.log(`App is running on http://127.0.0.1:${port}`);
});

//handling the Rejections (like operational error) by using the process thread event handling
process.on('unhandledRejection', (err) => {
  console.log('UNHANDLED REJECTION ERROR 💥');
  console.log(err.name, '=>', err.message);
  server.close(() => {
    process.exit(1);
  });
});