Through the magic of Claude, here is what the two hundred and eleven javascript files that GitHub loads on accessing an empty repo with just .md files (https://github.com/github-samples/.github):

  ┌─────────────────┬───────┬────────────┬────────────┐
  │    Category     │ Files │ Total Size │ Total Time │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Copilot         │    32 │   1,749 KB │   1,141 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ GraphQL / Relay │     4 │   1,629 KB │     190 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Primer Design   │     4 │   1,617 KB │     329 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Highlighting    │     4 │   1,048 KB │     414 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Code View       │    14 │     966 KB │   1,226 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ React Core      │     6 │     692 KB │     446 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ UI Components   │    26 │     674 KB │   1,541 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ SVG             │     2 │     634 KB │      51 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Code Editor     │     9 │     615 KB │     366 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Vendored        │    17 │     608 KB │     986 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Issues          │    13 │     589 KB │     504 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Markdown        │     8 │     321 KB │     198 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Runtime         │    12 │     263 KB │     807 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ HTML Parsing    │     2 │     235 KB │     152 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Navigation      │    11 │     230 KB │     362 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Web Components  │     7 │     229 KB │     540 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Comments        │     4 │     131 KB │     146 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Analytics       │     5 │     103 KB │     348 ms │
  ├─────────────────┼───────┼────────────┼────────────┤
  │ Other           │    32 │     484 KB │    2099 ms │
  └─────────────────┴───────┴────────────┴────────────┘

Times given for a 150 Mbps WiFi connection.

Some personal highlights:

- Syntax Highlighting for every obscure language under the sun. Seems like the language analysis they do the repository does nothing.

- Shipping the editor on pages where there is no editor

- Shipping Copilot prompts. Incredible. { prompt:\"Analyze the test coverage of this codebase. Identify areas with missing or insufficient tests and add comprehensive test cases to improve coverage.\" }

- Just a javascript file with a massive 500K SVG.

- I don't really know anything about GraphQL & Relay. But 1.4 megabytes of generated ASTs?

- Shipping Protobuf, YAML, Lodash (hashing, unicode, collections), Typebox, GSAP and Framer