feat: migrate workspace to Zod 4 (DD-120)#408
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Migrate all 9 packages from Zod 3.22.x to Zod 4.3.6. This is a
breaking change for downstream TypeScript consumers who compile
against exported @peac/schema types (z.infer<> types are not
assignment-compatible across Zod majors).
Schema changes:
- z.record() single-arg form removed in Zod 4: add explicit
z.string() key schema in 5 locations (schema, control, mcp-server)
- .default({}) on object schemas requires output-type-compatible
values in Zod 4: use .prefault({}) for input-type defaults (policy.ts)
- ZodError.errors alias removed: use .issues in test assertions
- issue.path typed as PropertyKey[] (was (string | number)[]): add
casts at 2 call sites (protocol/issue.ts, cli/validators.ts)
No behavioral changes to schema validation, receipt issuance, or
verification. All 4138 tests pass across 167 test files.
Workspace enforcement:
- pnpm.overrides forces zod@^4.3.6 across all workspace packages
- Prevents mixed Zod 3/4 which causes runtime TypeError
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Summary
pnpm.overrides.d.tstypes change (Zod 3/4 types are not assignment-compatible)Key migration patterns
z.record(ValueSchema)->z.record(z.string(), ValueSchema)(single-arg form removed in Zod 4).default({})->.prefault({})for input-type defaults (Zod 4.default()requires output-type values)ZodError.errors->ZodError.issues(.errorsalias removed)issue.pathtype:PropertyKey[]in Zod 4 (includessymbol); cast to(string | number)[]at 2 call sitesChanged files
package.jsonfiles:zodbumped to^4.3.6package.json: Addedpnpm.overrides.zod: "^4.3.6"packages/schema/src/json.ts: 2xz.record()2-arg formpackages/schema/src/interaction.ts: 1xz.record()2-arg formpackages/control/src/validators.ts: 2xz.record()2-arg formpackages/mcp-server/src/schemas/bundle.ts: 1xz.record()2-arg formpackages/mcp-server/src/infra/policy.ts: 3x.default({})->.prefault({})packages/protocol/src/issue.ts: Zod issue path type castpackages/cli/src/lib/conformance/validators.ts: Zod issue path type castpackages/schema/__tests__/dispute.test.ts: 9x.error.errors->.error.issuespackages/schema/__tests__/interaction.test.ts: 10x.error.errors->.error.issuesTest plan
.superRefine()verified NOT deprecated in Zod 4 (no churn needed)