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 v2.1.227 Home All releases olderv2.1.226 v2.1.228newer
Claude Code v2.1.227

Scattered globals replaced with resettable state records

Under the hood
Useful2 Signal3
Session State

Globals became resettable objects, making it possible to restart a session inside a running process.

What

A large mechanical refactor turned dozens of module-level variables into fields on lazily created singleton objects reached through accessors, some with an explicit reset(). Nothing changes for you, but it makes tearing down and restarting a session inside a running process possible.

Details
  • Covers the command fuzzy-search index, shell history, sandbox session flags, artifact and workshop state, plugin and marketplace caches, MCP tool-refresh sequences, terminal layout caching (a per-node cached layout instead of a WeakMap) and several event emitters.
  • The sandbox reset is async and calls the settings-subscription cleanup.
Evidence

sandboxDisabledThisSession

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 v2.1.227 →