How to download all of three.js

I’ve been following this documentation on three.js and downloaded the entire (or so I thought) library from here.
But every now and then I run into these functionalities like OrbitControl and OBJLoader and I can’t seem to find it within the downloaded three.js library.
What is the problem? Are these just extensions to the main framework? How do I go about downloading all of these functionalities as well?

Answer

That is not how we typically go on about downloading and integrating a package in a project. I recommend you check this guide: https://nodesource.com/blog/an-absolute-beginners-guide-to-using-npm/ (or any other package manager guide of your choice) and reference this documentation: https://docs.npmjs.com/