import { type BiMultiMap } from "https://deno.land/x/rimbu@1.0.3/core/menu/menu.ts";
const { NonEmpty } = BiMultiMap.Hashed;
A non-empty type-invariant immutable bi-directional MultiMap where keys and values have a many-to-many mapping. Its keys and values are hashed. See the BiMultiMap documentation and the HashBiMultiMap API documentation