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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 v2.1.234

Command queue moved into a single object

Under the hood
Useful1 Signal0
Message Queue

Queued messages, cancels and deliveries now go through one queue object instead of scattered globals.

What

The print and stream-JSON input loops no longer call scattered queue helpers or read module-level globals; queued user messages, cancels and wake-router deliveries all go through one queue object with named methods, and the query builder is handed that object rather than reaching for a global. No behaviour change.

Details
  • Methods include enqueue, remove, peek, subscribe, dequeueAllMatching, markCancelPending, isFoldInFlight, recheckCommandQueue, hasUserIntentCommandsInQueue and getCommandQueueLength.
  • The queue_depth telemetry field and the queue_depth_at_exit field of cli_drain_queue_complete now read from that object.
Evidence

cli_drain_queue_complete, queue_depth

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 v2.1.234 →