Check out the video.
So the above video should give you an idea on how to bundle your application using parcel app bundler.
I hope you find the video useful. You can support the video author by getting a t-shirt of Node.js. Do let me know if you liked it.
People tend to choose parcel application bundler because it is free of cost. It is also open source. And it does not have any configuration for you to set up. You can bundle up your html, css and JS file and make it out as output project. It is lot quicker and easy to deploy than browserify and webpack.