```typescript
import { isDate } from "node:node__util--types.d.ts";
```
isDate(object: unknown): object is Date
Returns `true` if the value is a built-in [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) instance.
```js
util.types.isDate(new Date()); // Returns true
```