FlatmappableSet
import { FlatmappableSet } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/set.ts";The canonical implementation of Flatmappable for ReadonlySet. It contains the methods wrap, ap, map, join, and flatmap.
const FlatmappableSet: Flatmappable<KindReadonlySet>;