Upgrade Zod peer dependency to v4#327

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Copilot wants to merge 13 commits into

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copilot/upgrade-to-zod-v4

Commits on May 5, 2026

Initial plan
Copilot
authored
Initial plan for Zod v4 upgrade

Copilot
and
robgruen
authored
Upgrade to Zod v4: update validate.ts to use v4 API and update peer dependencies

Copilot
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robgruen
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Fix literal type handling to support Zod v4 multi-value literals

Copilot
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robgruen
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Add comprehensive unit tests for Zod v4 integration (48 tests covering all type code paths)

Copilot
and
robgruen
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Improve test clarity: add Zod v4 note on array literal, remove unnecessary 'as any' cast

Copilot
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robgruen
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Define ZodTypeKind type alias for v4 discriminant strings; document discriminated union merging

Copilot
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robgruen
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Improve validate.ts comments: note z.core is public API; add v3 context for discriminated union merge

Copilot
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robgruen
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Potential fix for pull request finding

robgruen
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Copilot
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Potential fix for pull request finding

robgruen
and
Copilot
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fix: handle null in z.literal() — emit 'null' instead of 'any'

Copilot
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robgruen
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Fix optional field description handling, add model tests to npm test, fix appendLiteral for null

Copilot
and
robgruen
authored
Remove dead appendLiteral helper to eliminate code duplication

Copilot
and
robgruen
authored