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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 v2.1.242 Home All releases ←olderv2.1.241 v2.1.243newer→
Claude Code v2.1.242

Optional modules are now loaded from separate chunks inside the binary

Under the hood
Useful2 Signal1
Bundle

Over a thousand code paths, including browser integration, now load only the first time you use them.

What

Code that used to be inlined into one big module graph is now split into chunks loaded on demand, across 1,035 sites where the previous build had none. Startup pulls in less; features like the browser integration are loaded the first time they are used.

Evidence

await import("/$bunfs/root/chunk-

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 v2.1.242 →