setup your project

1. Create NPM project, hit enter till done

npm init

2. Install express

npm install express

3. Install nodemon (optional)

npm install --save-dev nodemon

4. Edit package.json In "scripts" create an entry for the main program and nodemon

"start": "node index.js",
"dev": "nodemon index.js"

replace index.js with the name of your express server file.

Run with either

npm start

or for nodemon.

npm run dev