Function union

union<F extends Record<string, FieldSpec>>(
fields: F,
options?: StructOptions,
): UnionDef<F>
Define a union using the functional API.

For Python-like class syntax, use Union instead.
Type Parameters
- F extends Record<string, FieldSpec>
Parameters
- fields: F
  Object mapping field names to types
- Optionaloptions: StructOptions
  Union options (e.g. { pack: 1 })
Returns UnionDef<F>
- Defined in index.d.ts:1959