[tonyhschu]

Author here – Part 2 uses:

- React for DOM rendering

- D3 for visualization geometry

- RxJS for handling state (i.e. turning scroll position into animated properties)

- PIXI for WebGL bits (i.e. all the little circles moving around)

[augbog]

Ah shoulda mentioned I looked at part 1's minified code and assumed the same for part 2. Thanks for clarifying :)