import { nilable } from "https://deno.land/x/fun@v2.0.0-alpha.12/mod.ts";
const { FlatmappableNilable } = nilable;
type
Flatmappable<KindNilable>
import { nilable } from "https://deno.land/x/fun@v2.0.0-alpha.12/mod.ts";
const { FlatmappableNilable } = nilable;