import { type AssertMessageFactory } from "https://deno.land/x/unknownutil@v3.6.0/mod.ts";
definition: (x: unknown, pred: Predicate<unknown>) => string
x/unknownutil/mod.ts>AssertMessageFactory
import { type AssertMessageFactory } from "https://deno.land/x/unknownutil@v3.6.0/mod.ts";