The JS code is in the index.js file.

To be able to run the code, follow these instructions:

1. Clone the GitHub repository with the git clone command.
2. Open your terminal in the project's root directory (right next to package.json).
3. Install the node modules.

npm install

4. To run the code, issue the npm start command.

npm start

Alternatively, you can run the project in watch mode, so every time you save, the JavaScript server is restarted.

npm run dev

The npm run dev command uses nodemon to watch for changes and restarts your JavaScript project every time you save (Ctrl + S).