Bootstrap an express application

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Things we perform in a express application’s entry point file:

  1. Import dependencies.
  2. Configurations. Such as the template engine.
  3. Define Middlewares.
  4. Define Routes.
  5. Connection to DB.
  6. Start the app.

Example:

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// Dependencies.
var expres = require('express');
var app = express();
// Configurations.
var port = process.env.PORT || 7654;
app.set('port', port);
app.set('view', __dirname + '/views');
// Middlewares.
app.use(express.favicon());
app.use(express.static(__dirname + '/public'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(express.session());
// Routes.
app.get('*', function (req, res) {
    res.end('Hello World!');
});
// DB Connection.
// Start.
app.listen(port, function () {
    console.log('Service is running on: ', port);
});
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