index.js

// Import express
import express from "express";

//import the allRoutes function from our restRoute.js file
import allRoutes from "./src/route/restRoute.js";

//import mongoose
import mongoose from "mongoose";
import bodyParser from "body-parser";

const app = express();

// Setup the port for the server
const port = 4000;

//set connection between the API and mongoDB
mongoose.Promise = global.Promise;
mongoose.connect("mongodb://localhost/studentDB", {
  //avoid errors
  useNewUrlParser: true,
  useUnifiedTopology: true,
});

//parse requests and make it redable for our API
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

//call the allRoute function and send app which initializes express
allRoutes(app);

// When a get request is made to / or the default page
// display a message.
app.get("/", (req, res) =>
  res.send(`Your node and express server is running on port: ${port}`)
);

//print a message to the cli
app.listen(port, () => {
  console.log("restAPI is running on port: " + port);
});