feat(language): implicitly convert enum references to arrays

[sanny-io]

Closes #1211

Summary by CodeRabbit

• New Features

  • Added enum-based validation for string fields, including checks against all permitted enum values.
  • Added support for enum-constrained model fields, with valid and invalid status handling.
  • Added address type validation with RESIDENTIAL and COMMERCIAL values.
  • Preserved default metadata and strict settings in generated lightweight schemas.

• Bug Fixes

  • Improved enum reference resolution and generated validation expressions for consistent schema behavior.

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📥 Commits

Reviewing files that changed from the base of the PR and between 08e706a and 1c51262.

📒 Files selected for processing (5)

• packages/cli/test/ts-schema-gen.test.ts
• packages/language/test/attribute-application.test.ts
• packages/sdk/src/ts-schema-generator.ts
• packages/zod/test/factory.test.ts
• packages/zod/test/schema/schema-lite.ts

💤 Files with no reviewable changes (1)

• packages/zod/test/factory.test.ts

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📝 Walkthrough

Walkthrough

Changes

Enum declarations can now be used in validation membership expressions. The linker resolves enum references as arrays, and the TypeScript schema generator emits their values. Zod and ORM tests cover valid and invalid enum values.

Enum validation support

Layer / File(s)	Summary
Resolve enum references packages/language/src/zmodel.langium, packages/language/src/zmodel-linker.ts, packages/language/test/attribute-application.test.ts	Enum declarations are valid reference targets and resolve as non-nullable array expressions. Schema loading accepts enum membership validation.
Generate enum membership expressions packages/sdk/src/ts-schema-generator.ts, packages/cli/test/ts-schema-gen.test.ts	Enum references generate arrays containing the enum name and all enum fields. Lite schema generation preserves supported attributes and strict type metadata. Tests verify the generated in expression.
Validate generated Zod enum fields packages/zod/test/schema/schema.zmodel, packages/zod/test/schema/schema.ts, packages/zod/test/schema/schema-lite.ts, packages/zod/test/factory.test.ts	Address.type uses AddressType membership validation. Tests cover inference, valid values, invalid values, strict handling, defaults, and existing validation fixtures.
Exercise ORM enum validation tests/e2e/orm/schemas/enum/schema.zmodel, tests/e2e/orm/schemas/enum/schema.ts, tests/e2e/orm/client-api/enum.test.ts	The SQLite ORM schema adds PostStatus validation. End-to-end tests cover three valid statuses and one invalid status.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: ⚪ Minimal · up to 1c512

No actionable merge-blocking risk remains from the supplied evidence; the PR is merge-ready after normal checks and review.

Suggested reviewers: ymc9

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Out of Scope Changes check	⚠️ Warning	The pull request includes changes beyond enum validation support, including lite schema attribute preservation, strict: true emission for type definitions, and broad default metadata updates in `pac…	Move the lite schema preservation, strict metadata emission, and unrelated default metadata updates to a separate pull request, unless the linked issue or implementation requires them. Keep only changes needed for enum references in validat…

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the primary change: implicit conversion of enum references to arrays.
Linked Issues check	✅ Passed	The changes satisfy issue #1211 by resolving enum references, supporting enum references with the in operator, preserving primitive field usage, and adding language, schema-generation, Zod, and end-…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 5…

Full details: Linked Issues check

Explanation

The changes satisfy issue #1211 by resolving enum references, supporting enum references with the in operator, preserving primitive field usage, and adding language, schema-generation, Zod, and end-to-end tests.

Full details: Out of Scope Changes check

Explanation

The pull request includes changes beyond enum validation support, including lite schema attribute preservation, strict: true emission for type definitions, and broad default metadata updates in packages/zod/test/schema/schema-lite.ts.

Resolution

Move the lite schema preservation, strict metadata emission, and unrelated default metadata updates to a separate pull request, unless the linked issue or implementation requires them. Keep only changes needed for enum references in validation rules and their tests.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 5 files.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

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Warning

Some tools did not complete. Review the errors below.

🔧 ESLint

If the error stems from missing dependencies, add them to the package.json file. For unrecoverable errors (e.g., due to private dependencies), disable the tool in the CodeRabbit configuration.

packages/cli/test/ts-schema-gen.test.ts

ESLint skipped: missing config or dependency (missing-dependency). The ESLint configuration references a package that is not available in the sandbox.

packages/language/test/attribute-application.test.ts

ESLint skipped: missing config or dependency (missing-dependency). The ESLint configuration references a package that is not available in the sandbox.

packages/sdk/src/ts-schema-generator.ts

ESLint skipped: missing config or dependency (missing-dependency). The ESLint configuration references a package that is not available in the sandbox.

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Actionable comments posted: 1

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Inline comments:
In `@packages/zod/test/factory.test.ts`:
- Around line 608-618: Update the invalid-enum test for Address so its zip field
uses a value valid under the schema’s zip validation, isolating the failure
assertion to the invalid type value UNKNOWN while preserving the existing test
structure.

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ℹ️ Review info

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Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between 1390aa0 and 59bbadc.

⛔ Files ignored due to path filters (2)

• packages/language/src/generated/ast.ts is excluded by !**/generated/**
• packages/language/src/generated/grammar.ts is excluded by !**/generated/**

📒 Files selected for processing (11)

• packages/cli/test/ts-schema-gen.test.ts
• packages/language/src/zmodel-linker.ts
• packages/language/src/zmodel.langium
• packages/language/test/attribute-application.test.ts
• packages/sdk/src/ts-schema-generator.ts
• packages/zod/test/factory.test.ts
• packages/zod/test/schema/schema.ts
• packages/zod/test/schema/schema.zmodel
• tests/e2e/orm/client-api/enum.test.ts
• tests/e2e/orm/schemas/enum/schema.ts
• tests/e2e/orm/schemas/enum/schema.zmodel

Included review availability: Your plan includes up to 8 reviews per rolling hour; 7 remain after this review.