interface KindRightFnEither
implements Kind
import { type KindRightFnEither } from "https://deno.land/x/fun@v2.0.0-alpha.12/fn_either.ts";
Specifies FnEither as a Higher Kinded Type, with covariant parameter A corresponding to the 0th index of any Substitutions and a contravariant parameter D corresponding to the 0th index of any Substititions. KindRightFnEither curries the Left parameter of the output Either. This is useful when one needs to Fix the Left output with a Combinable or some other collection algebraic structure.