## isError() function

Returns true if the input is an Error object. This should be replaced with `Error.isError` when it is more widely supported. See: [https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error/isError](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error/isError)

**Signature:**

```typescript
export declare function isError(value: unknown): value is Error;
```

## Parameters

| Parameter | Type    | Description                |
|-----------|---------|----------------------------|
| value     | unknown | The candidate value.       |

**Returns:**

value is Error

True if the input is an Error object.