import type {
  Link,
  ValuedLink,
  VariantGraphBase,
  VariantValuedGraphBase,
} from '@rimbu/graph/custom';

/**
 * Utility type to determine if a graph has valued or unvalued links
 * @typeparam G - a graph subtype
 * @typeparam N - the graph's node type
 */
export type LinkType<G extends VariantGraphBase<any, any>, N> =
  G extends VariantValuedGraphBase<N, infer V> ? ValuedLink<N, V> : Link<N>;