import { Any } from './Any.js';
import './Function.js';
import './Primitive.js';

/**
 * Matches anything that is not `undefined`. If a generic is provided, it will
 * exclude `undefined` from that type.
 *
 * @template U The type to exclude `undefined` from.
 * @returns A type that excludes `undefined`.
 * @example NotUndefined<number | undefined> // number
 */
type NotUndefined<U = Any> = U extends undefined ? never : U;

export type { NotUndefined };