import { isArray } from "https://deno.land/x/unknownutil@v3.18.0/is.ts";
Return true if the type of x is unknown[].
import { is } from "@core/unknownutil";
const a: unknown = [0, 1, 2];
if (is.Array(a)) {
// a is narrowed to unknown[]
const _: unknown[] = a;
}