Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
DependenciesArea: what it touches
Internal ChangesKind: in v2.1.300,
Internal ChangesSection of the release
What
Claude Code includes a library called zod, which checks that data has the expected shape. The bundled version has been updated: it locks its parts against changes, builds some checks only when they are first needed, and handles more kinds of keys in lookup tables.
Why
This is a library update with little effect on how you use Claude Code.
