fetch.js and promise.js are from a library called Polyfills and are used for legacy browser support. Make it so we can use Fetch for api calls instead of ajax
You need Node.js installed on your machine. Simply download the installer from nodejs.org and go through the installation steps.
Once Node.js is installed, open your command prompt or terminal and navigate into this project folder. There, run npm install to install all required dependencies.
Finally, run npm start to start the development server and visit localhost:8080 to see the running application.