Connect Mongo DB to Node js/Express js App

IT18021080/Telemedicine-Chat-App/backend/config/db.js

+const mongoose = require("mongoose");
+
+
+
+const connectDB = async () => {
+    try {
+        
+        const conn = await mongoose.connect(process.env.MONGO_URI,{
+
+            useNewUrlParser: true,
+            useUnifiedTopology: true,
+            
+        });
+
+        console.log(`MongoDB Connected: ${conn.connection.host}`.cyan.underline);
+    } catch (error) {
+        console.log(`Error: ${error.message}`.red.bold);
+        process.exit();
+    }
+};
+
+module.exports = connectDB ;
\ No newline at end of file

IT18021080/Telemedicine-Chat-App/backend/server.js

+
 const express = require("express");
 const dotenv = require("dotenv");
 const { chats } = require("./data/data");
+const connectDB = require("./config/db");
+const colors = require("colors");
 
-const app = express();
 dotenv.config();
 
 
+connectDB();
+const app = express();
+
+
+
+
 app.get("/", (req, res) => {
     res.send("API is Running Successfully");
 });
@@ -20,6 +28,8 @@ app.get("/api/chat/:id", (req, res) => {
     res.send(singleChat);
 });
 
+
+
 const PORT = process.env.PORT || 5000;
 
-app.listen(5000, console.log(`Server Started on PORT ${PORT}`));
\ No newline at end of file
+app.listen(5000, console.log(`Server Started on PORT ${PORT}`.yellow.bold));
\ No newline at end of file