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 zod, a library it uses to check that data has the right shape. The bundled copy changed:
Its modules are now locked so they cannot be changed while running
Several text-format checks no longer add pattern or content-encoding details to the JSON Schema they generate (JSON Schema is a standard way to describe what data something accepts)
Slovak and Belarusian translations gained a label for IBAN bank account numbers
Why
This is mostly a library update. Schemas generated from these checks may describe text fields in less detail than before.
