I don't understand how this is React based. React is listed only as a dev dependency, and when asked if JavaScript code is included in the framework, the projec

I don't understand how this is React based. React is listed only as a dev dependency, and when asked if JavaScript code is included in the framework, the project says - > No. The Lightning Design System is a pure CSS framework that you can use with any front-end development framework you’d like, including Salesforce-specific technologies such as Visualforce and Lightning, as well as third-party frameworks like React or Angular. React just happens to be used in the framework's tests, seen in the repo here - https://github.com/salesforce-ux/design-system/blob/master/test/unit/site/index.js https://github.com/salesforce-ux/design-system/blob/master/t...