langium-zod-docs

To generate Zod schemas from Langium grammars, you parse the grammar type definitions and pass the object to a generation pipeline that extracts neutral type descriptors and renders Zod v4 TypeScript schemas for runtime validation.

Runtime validation handles recursive cycles in Langium grammars through built-in recursive cycle detection during schema generation, ensuring that recursive expressions and self-referencing types produce valid, non-crashing Zod validation schemas.

Yes, you can validate live Langium cross-references using the zRef integration feature, which connects Zod runtime validation schemas directly with Langium's cross-reference validation and dependency injection systems.

Langium schema generation supports discriminated unions, projections, metadata filtering, and configurable object styles, allowing you to customize the extracted TypeScript Zod schemas to fit specific tooling or network boundary requirements.

The best way to keep Zod schemas synchronized with DSL grammar changes is to integrate schema generation into your build pipeline, automatically regenerating Zod v4 TypeScript schemas from parsed Langium grammars whenever the grammar definitions change.

To output conformance artifacts when generating TypeScript code from Langium, configure the schema generation pipeline to write the extracted Zod schemas and neutral type descriptors directly to your desired output path during the build process.