I really enjoyed it, even if I did think it was going to be recommendations for a text editor config initially. How was it built? Looking through the compiled J

I really enjoyed it, even if I did think it was going to be recommendations for a text editor config initially. How was it built? Looking through the compiled JS, it looks like it uses PixiJS (https://pixijs.download/dev/docs/index.html https://pixijs.download/dev/docs/index.html)?