Source Intelligence

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.

All of v2.1.239 Home All releases olderv2.1.238 v2.1.240newer
Claude Code v2.1.239

Large directory scans stop freezing the interface

You'll notice
Useful4 Signal1
Performance

Scanning big directory trees no longer freezes the interface for seconds.

What

Directory walks and the upload file filter now pause to let the interface redraw at least every 200 ms, and cap how many file operations run at once. Scanning a big tree should no longer block the UI for seconds or open an unbounded number of concurrent reads.

Details
  • A shared limiter provides both the yield budget and the concurrency queue; the walk and filter paths each set their own maximum concurrency.
  • Applies on those paths unconditionally, with no setting to turn it off.
Evidence

yieldBudgetMs

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 v2.1.239 →