feat: add example on how to save into MongoDB with Prisma

src/app.ts

@@ -1,16 +1,33 @@
+import 'express-async-errors';
+
+import { PrismaClient } from '@prisma/client';
 import express, { json } from 'express';
 import helmet from 'helmet';
 
 const app = express();
 app.use(json());
 app.use(helmet());
 
+const prisma = new PrismaClient();
+
 app.get('/', (_, res) => {
   res.json({
     msg: 'Hello World',
   });
 });
 
+app.get('/prisma', async (_, res) => {
+  await prisma.user.create({
+    data: {
+      email: 'random@example.com',
+    },
+  });
+
+  res.json({
+    msg: 'Add a new unique user without duplicate',
+  });
+});
+
 app.use((_, res, _2) => {
   res.status(404).json({ error: 'NOT FOUND' });
 });