| 1699 | * @since 3.10.0 |
| 1700 | */ |
| 1701 | export class Union<M extends AST = AST> implements Annotated { |
| 1702 | static make = (types: ReadonlyArray<AST>, annotations?: Annotations): AST => { |
| 1703 | return isMembers(types) ? new Union(types, annotations) : types.length === 1 ? types[0] : neverKeyword |
| 1704 | } |
| 1705 | /** @internal */ |
| 1706 | static unify = (candidates: ReadonlyArray<AST>, annotations?: Annotations): AST => { |
| 1707 | return Union.make(unify(flatten(candidates)), annotations) |
| 1708 | } |
| 1709 | /** |
| 1710 | * @since 3.10.0 |
| 1711 | */ |
| 1712 | readonly _tag = "Union" |
| 1713 | private constructor(readonly types: Members<M>, readonly annotations: Annotations = {}) {} |
| 1714 | /** |
| 1715 | * @since 3.10.0 |
| 1716 | */ |
| 1717 | toString() { |
| 1718 | return Option.getOrElse(getExpected(this), () => this.types.map(String).join(" | ")) |
| 1719 | } |
| 1720 | /** |
| 1721 | * @since 3.10.0 |
| 1722 | */ |
| 1723 | toJSON(): object { |
| 1724 | return { |
| 1725 | _tag: this._tag, |
| 1726 | types: this.types.map((ast) => ast.toJSON()), |
| 1727 | annotations: toJSONAnnotations(this.annotations) |
| 1728 | } |
| 1729 | } |
| 1730 | } |
| 1731 | |
| 1732 | /** @internal */ |
| 1733 | export const mapMembers = <A, B>(members: Members<A>, f: (a: A) => B): Members<B> => members.map(f) as any |