import { type ToPredicate } from "https://deno.land/x/abstruct@1.0.0-beta.7/deps.ts";
definition: F extends (input: infer In) => boolean ? (input: In) => input is In : never
import { type ToPredicate } from "https://deno.land/x/abstruct@1.0.0-beta.7/deps.ts";