function types.isSet
Usage in Deno
```typescript import { types } from "node:node__util.d.ts"; ```
isSet<T>(object: T | { }): object is T extends ReadonlySet<any> ? (unknown extends T ? never : ReadonlySet<any>) : Set<unknown>
Returns `true` if the value is a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
```js
util.types.isSet(new Set()); // Returns true
```
object: T | { }