import { type Hashed } from "https://deno.land/x/rimbu@1.1.0/core/menu/bimultimap.ts";
const { NonEmpty } = 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