Files
agentic-dev-template/docs/library-decisions/2026-05-14-zod.md
Danijel Martinek 1108e24ea0 chore(deps): backfill library traces for un-cited cluster
Add approved trace files for payload, @trpc/server, @trpc/client, zod,
superjson, @payloadcms/db-postgres, @payloadcms/richtext-lexical, globals,
react, react-dom, vitest, @tanstack/react-query, and all @testing-library/*
packages. All traces dated 2026-05-14, decision: approved, adr: null.

Establishes the baseline so the pre-commit library-decisions gate is
additive (new deps require traces) rather than disruptive (old deps fail
immediately). All 34 trace files pass validateTrace() from schema.mjs.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-14 10:10:23 +00:00

3.1 KiB

package, version, tier, decision, date, deciders, adr, filter-results, verification-commands, accepted-cves
package version tier decision date deciders adr filter-results verification-commands accepted-cves
zod ^3.24.0 core approved 2026-05-14
Danijel Martinek
null
license types maintenance boundary-fit shadow-check eu-residency cve-scan named-consumer
MIT native active pass pass n/a clean pass
npm view zod license
npm view zod version
pnpm audit --audit-level=moderate

Filter: license

npm view zod license returns MIT. MIT is on the allowlist.

Filter: types

Zod is authored in TypeScript and ships its own .d.ts declaration files. No separate @types/zod package is needed.

Filter: maintenance

Actively maintained. The 3.x line is the current stable major. Regular releases; the zod 4.x release is in active development. Strong community and ecosystem.

Filter: boundary-fit

Zod is the workspace-standard schema validation library. Every use case exports xInputSchema and xOutputSchema as z.ZodObject instances (CLAUDE.md Key Conventions). Feature packages, core packages, and the tRPC layer all use Zod for input validation and output parsing. No boundary rules restrict Zod to a specific tier.

Filter: shadow-check

Zod is the sole schema validation library in the workspace. No competing validator (Valibot, Yup, Joi, etc.) is present or proposed. The shadow-check filter from _template.md explicitly names Zod as a workspace-locked library.

Filter: eu-residency

Zod is a pure runtime validation library with no network communication, telemetry, or data transmission. EU residency does not apply.

Filter: cve-scan

pnpm audit --audit-level=moderate reports no advisories against zod at the time of this trace.

Filter: named-consumer

All five feature packages use Zod for use-case input/output schemas. core-shared uses Zod for tRPC input validation and error schemas. core-audit uses Zod for audit event schemas. Named, non-hypothetical consumers exist today.

Prompt: replaces

Zod replaces ad-hoc manual validation (typeof x === "string") that would not scale to the use-case schema pattern mandated by CLAUDE.md. No prior schema library was in the workspace.

Prompt: migration-cost-out

Hard. Zod's z.ZodObject types are woven into the public API surface of every use case (xInputSchema, xOutputSchema, IXUseCase). The tRPC router layer reads Zod schemas directly. Migrating out would require replacing schema definitions across all feature packages, updating the tRPC integration, and touching the conformance ESLint rules that reference Zod types.

Prompt: alternatives-considered

  1. Valibot — Smaller bundle size but at the time of adoption had less mature TypeScript inference for the factory-function use-case pattern.
  2. Manual typeof / JSON Schema — Zero dependency but does not produce TypeScript types automatically; incompatible with the xInputSchema/xOutputSchema contract pattern.