FlatmappableFnEither
import { FlatmappableFnEither } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/fn_either.ts";The canonical implementation of Flatmappable for FnEither. It contains the methods wrap, apply, map, and flatmap.
const FlatmappableFnEither: Flatmappable<KindFnEither>;