SystemJS is a module loader found at the following GitHub link https://github.com/SystemJS/SystemJS.

It is built on top of the original ES6 module loader polyfill. It's meant to solve the basic problem of loading modules in the browser, which currently doesn't work unless the browser gets some help from a library, such as SystemJS.

In this appendix, we will cover:

• The SystemJS itself
• A practical SystemJS example with the quickstart repository for Angular