This project implements a simple Node.js Express API that connects to MongoDB and retrieves user data.

• GET /users/:id endpoint:
  • Finds a user by _id
  • Returns details only if age > 21
  • Returns 404 if not found or underage
  • Handles invalid ObjectId errors gracefully

• Node.js
• Express.js
• MongoDB with Mongoose
• dotenv for environment management

1. Clone repo:

   git clone <your-repo-url>
   cd node-mongo-api