implemented a simple backend for mobile banking

src/app.js

@@ -0,0 +1,21 @@
+const express = require('express');
+const cors = require('cors');
+const pinoHttp = require('pino-http');
+const { logger } = require('./util/logger');
+const routes = require('./routes');
+
+const app = express();
+
+app.use(cors());
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+// app.use(pinoHttp({ logger }));
+app.use('/api', routes);
+app.get('/health', (_, res) => res.send('server is healthy'));
+app.use((err, _req, res, _next) => {
+  logger.error(err, 'uncaught error');
+  res.status(500).json({ error: 'INTERNAL SERVER ERROR' });
+});
+
+module.exports = app;