"Why would you ship tests?" — Fair point. Source maps only include production bundle files — tests wouldn't appear in the map regardless. Tests may well exist in Anthropic's internal repo, and we can't claim otherwise. However, the bugs we found speak for themselves: a watchdog that doesn't protect the most vulnerable code path for 5+ months, a fallback with telemetry that never executes where it's needed, Promise.race without catch silently dropping tool results. If tests exist, they clearly don't cover the streaming pipeline adequately — these are the kind of issues that even basic integration tests would catch.

It's just Claude bragging about being the first AI whistleblower.

Seriously, this just seems to reward poor behavior on Anthropic's part.

[dead]

"Prompt injection from the issue?" — That's the best theory so far

"Is the Claude thank you sarcasm?" — Mostly. But the sequence is real: we filed #39755 asking for source access on March 27, the source map shipped on March 31. The actual explanation is simpler — Bun generates source maps by default, and nobody checked the build output. Which is itself the point: 64K lines of code with no build verification process.