langium-zod / ZodTypeExpression

Type Alias: ZodTypeExpression

type ZodTypeExpression = 
  | {
  kind: "primitive";
  primitive: ZodPrimitive;
}
  | {
  kind: "literal";
  value: string;
}
  | {
  kind: "reference";
  typeName: string;
}
  | {
  element: ZodTypeExpression;
  kind: "array";
}
  | {
  kind: "crossReference";
  targetType: string;
}
  | {
  kind: "union";
  members: ZodTypeExpression[];
}
  | {
  inner: ZodTypeExpression;
  kind: "lazy";
};

Defined in: types.ts:28

A discriminated union that represents a single Zod type node in the descriptor tree produced by the extractor and consumed by the code generator.

Each variant maps to a specific Zod combinator:

• primitive → z.string() / z.number() / z.boolean() / z.bigint()
• literal → z.literal(value)
• reference → <TypeName>Schema (a reference to another generated schema)
• array → z.array(element)
• crossReference → ReferenceSchema (Langium cross-reference, optionally refined with zRef when cross-reference validation is enabled)
• union → z.union([...members])
• lazy → z.lazy(() => inner) (used for self-referential types)

Remarks

This type is part of the lower-level descriptor API. Most consumers do not need to construct ZodTypeExpression values directly; they are produced by the extractor from Langium grammar types. Custom descriptor transformations (e.g. injecting additional validation constraints before code generation) are the primary use case.

See

• ZodPropertyDescriptor
• ZodTypeDescriptor