I build a JavaScript Calculator as described by FreeCodeCamp. I used visual studio code (https://code.visualstudio.com/) with the Live Server extension. React was my tool of choice for building this project. I used the CDN version of React, and I will post the links to the CDNs below. I learned a lot about css grid in this video.
React and ReactDOM: https://reactjs.org/docs/cdn-links.html
Babel: https://babeljs.io/en/setup#installation
Thanks for watching!