export function hasSubset<K, V, W=V>(x: Lists<K, V>, y: Lists<K, V>, fc: CompareFunction<V|W> | null=null, fm: MapFunction<K, V, V|W> | null=null): boolean {
  return xmap.hasSubset(xmap.fromLists(x), xmap.fromLists(y), fc, fm as any);
}