import { type SortedBiMultiMap } from "https://deno.land/x/rimbu@0.13.2/mod.ts";
const { NonEmpty } = SortedBiMultiMap;
A non-empty type-invariant immutable bi-directional MultiMap where keys and values have a many-to-many mapping. Its keys and values are sorted. See the BiMultiMap documentation and the HashBiMultiMap API documentation