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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.

All of v2.1.140 Home All releases olderv2.1.139 v2.1.163newer
Claude Code v2.1.140

Compaction Progress Tracks Start Time

What

The compaction state now records when compaction began (compactingStartTime), enabling elapsed-time display in the UI during long compactions.

Details
  • compactingStartTime is set when compaction transitions to active and cleared when it completes.
  • The value is preserved across state updates so elapsed time can be computed without drift.
Evidence

$x_() function (search for "compactingStartTime")

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

See this entry in the whole of v2.1.140 →