function map.updateAtimport { map } from "https://deno.land/x/fun@v2.0.0/mod.ts"; const { updateAt } = map; updateAt<B>(S: Comparable<B>): (key: B) => <A>(value: A) => (map: ReadonlyMap<B, A>) => ReadonlyMap<B, A>Type ParametersBParametersS: Comparable<B>Returns(key: B) => <A>(value: A) => (map: ReadonlyMap<B, A>) => ReadonlyMap<B, A>