import type { BaseNode } from "./base-node.js";
import type { UndefinedNode } from "./undefined-node.js";
import type { UnionNode } from "./union-node.js";
export type Optional<TNode extends BaseNode> = UnionNode<TNode | UndefinedNode>;
/**
 * Unwraps an optional wrapper (a union with undefined), returning the non-undefined member.
 * Non-union nodes pass through unchanged.
 */
export type UnwrapOptional<TNode> = TNode extends UnionNode<infer TChildren> ? Exclude<TChildren, UndefinedNode> : TNode;
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