import { type UnaryPredicator } from "https://deno.land/x/tstl@v3.0.0/internal/functional/UnaryPredicator.ts";
definition: (val: T) => boolean
x/tstl/internal/functional/UnaryPredicator.ts>UnaryPredicator
import { type UnaryPredicator } from "https://deno.land/x/tstl@v3.0.0/internal/functional/UnaryPredicator.ts";