How does Glitch render README.md?

[Bubbler]

Just a technical question out of curiosity. How is a markdown file rendered on Glitch? In particular,

1. Is Glitch using server-side or client-side rendering?
2. Which library (or libraries) is it using? (both of renderer and styling)

For server-side tutorials/examples, a page generated from README.md could be a nice index.html, which would be best if it appears exactly the same as in the editor.

[Bubbler]

Digging into Chrome Devtools got me most of the answer (I think). Please correct me if something is wrong.

• Renderer is markdown-it
  • default setting with HTML enabled
  • Plugins: markdown-it-sanitizer and markdown-it-emoji (light version)
  • Used client-side, packed with webpack
• Styling seems to be customized; uses Stylus (file extension .styl) that compiles into CSS