import { Collection } from "https://deno.land/x/revoltio@v1.0.0/src/util/mod.ts";
Checks if all items passes a test. Identical in behavior to Array.every().
Returns
this is Collection<K2, V>
Parameters
fn: () => value is V2
value: V,
key: K,
collection: this,
Returns
this is Collection<K, V2>