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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.246

Event emitter that buffers events until someone listens

Under the hood
Useful2 Signal2
Startup

Events fired before anything is listening are now replayed instead of lost.

What

A new wrapper holds emitted events per name while nothing is subscribed, replays them to the first subscriber and passes through afterwards, so events fired during startup are not lost.

Details
  • Unsubscribing more than once is harmless and decrements the subscriber count only once.
Evidence

subscribe

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.246 →