Interesting Interaction between `S.extend`/`S.union` and branding.

const TypeId: unique symbol = Symbol.for(
  "@blockprotocol/graph/ontology/DataType",
);
export type TypeId = typeof TypeId;

const InnerType = S.union(
  StringType.StringType,
  NumberType.NumberType,
  BooleanType.BooleanType,
  NullType.NullType,
);

export const DataType = S.extend(
  S.struct({
    id: DataTypeUrl.DataTypeUrl,
    title: S.string.pipe(S.nonEmpty()),
    description: S.optional(S.string.pipe(S.nonEmpty())),
  }),
  InnerType,
);

export function fromStatic<T extends DataType>(
  value: Brand.Brand.Unbranded<T>,
): T {
  return Brand.nominal<T>()(value);
}

export const V1 = {
  id: DataTypeUrl.parseOrThrow(
    "https://blockprotocol.org/@blockprotocol/types/data-type/boolean/v/1",
  ),
  title: "Boolean",
  description: "A True or False value",

  type: "boolean",
} satisfies DataType.DataType;