Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
SchemasArea: what it touches
Internal ChangesKind: in v2.1.285,
Internal ChangesSection of the release
What
Claude Code includes zod, a library that checks data has the expected shape. The bundled copy was updated. It adds new checking functions, a looser date and time format, and changes to its helpers for IPv6 addresses and network ranges.
Why
This is an upgrade of a library Claude Code relies on, and its effect on what you see is minor.