@classytic/validation

Isomorphic zod validation schemas shared server↔client. Framework-agnostic (zod is the only peer), so the same rules run in the catalog kernel (Arc auto-CRUD, repository writes) and in admin/storefront forms — one implementation, zero drift.

Charter: zod-based validation shared between server and client lives here. Zod-free value objects / pure functions belong in @classytic/primitives; wire/transport types in @classytic/repo-core.

Modules

@classytic/validation/barcode

import {
  validateGTIN,
  validateISBN,
  detectBarcodeFormat,
  optionalScannableBarcodeSchema,
} from "@classytic/validation/barcode";

validateGTIN("4006381333931");        // true
detectBarcodeFormat("9780306406157"); // "ISBN13"
const product = z.object({ barcode: optionalScannableBarcodeSchema });

| Format | Length | Checksum | |---|---|---| | EAN-13 | 13 | mod-10 (1,3,1,3…) | | EAN-8 | 8 | mod-10 (3,1,3,1…) | | UPC-A | 12 | mod-10 (3,1,3,1…) | | GTIN-14 | 14 | mod-10 (3,1,3,1…) | | ISBN-10 | 10 (or 9+X) | mod-11 | | ISBN-13 | 13 (978/979) | EAN-13 | | CODE128 | ≥4 | printable ASCII (no checksum) |

@classytic/validation/identifiers

productIdentifiersSchema — a product's standard IDs (gtin/upc/ean/isbn checksum-validated, mpn/plu length-only, custom open map).

Both modules are also re-exported flat from the package root (@classytic/validation).