Function isError

isError(value): value is Error
It will determine whether the provided value is an Error or not.
Parameters
- value: unknown
Returns value is Error
Since
1.0.0

Example
```
isError(new Error("error"));
// => true
```
Example
```
isError(new RangeError("error"));
// => true
```
Example
```
isError(2);
// => false
```
- Defined in is-error.ts:18