UndefinableSchemable

import type { UndefinableSchemable } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/schemable.ts";

Takes a Schemable and returns a Schemable<A | undefined>;

interface UndefinableSchemable <U extends Kind> extends Hold<U> {

readonly undefinable: <A, B, C, D, E>(or: $<U, [A, B, C], [D], [E]>) => $<U, [A | undefined, B, C], [D], [E]>;

}

§Type Parameters

U extends Kind

readonly undefinable: <A, B, C, D, E>(or: $<U, [A, B, C], [D], [E]>) => $<U, [A | undefined, B, C], [D], [E]>