Intitial project structure with express.js

index.js

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+const express = require('express');
+const app = express();
+const port = 3000;
+
+// enable the Twig template engine
+app.set('view engine', 'twig');
+
+// enable serving static files
+app.use(express.static('public'));
+
+// load routes
+const indexRoutes = require('./src/routes/index');
+
+// register routes
+app.get('/', indexRoutes.getIndex);
+
+app.listen(port, () => {
+  console.log(`Leviathan listening on port ${port}`);
+});