Thread

Microsoft agentically ports Copilot runtime to Rust for $120K

48 points · 62 comments · pjmlp

tecoholic · 1789900492 · focus · HN ↗
```
    One of the thorniest conversions was the session.ts file, which was over 30,000 lines of TypeScript that touched all aspects of the runtime.
```
This can’t be real. Single file with 30K lines? Which human being is working on it and how much RAM does it take for a code editor to load that with full symbol tree? I am genuinely curious. Is this common? I think most files I come across stretch to maybe 2-3k lines max.
1. formerly_proven · 1789900849 · focus · HN ↗
  > Which human being is working on it
  If you've ever used that tool you wouldn't ask this question, since it's obviously fully vibecoded.

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