Is it possible to build interfaces with React.js?

Question

JavaScript

Hello.
I came across UI framework https://www.lightningdesignsystem.com from SaleForce. Very interested in the structure and implementation.
How are component pages generated?
I noticed that every class on the page has a data-reactid="0.0" attribute .
And also in the project repository there are such constructions:

module.exports = (
  <div className={pf('text-heading--medium')}>
    The quick brown fox jumps over the lazy dog.
  </div>
  );

Please tell me how it works?

Answer 1

This is done with React and React Router and then bundled with WebPack