function deleteAtimport { deleteAt } from "https://deno.land/x/fun@v.2.0.0-alpha.11/map.ts"; deleteAt<B>(S: Eq<B>): (key: B) => <A>(map: ReadonlyMap<B, A>) => ReadonlyMap<B, A>Type ParametersBParametersS: Eq<B>Returns(key: B) => <A>(map: ReadonlyMap<B, A>) => ReadonlyMap<B, A>