[**@kazupon/jts-utils**](../../index.md)

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[@kazupon/jts-utils](../../index.md) / [types](../index.md) / IsNever

# Type Alias: IsNever\<T\>

```ts
type IsNever<T> = [T] extends [never] ? true : false
```

Check never type

## Type Parameters

| Type Parameter | Description   |
| -------------- | ------------- |
| `T`            | Type to check |

## Example

```ts
import type { IsNever } from '@kazupon/jts-utils'

type A = IsNever<never> // true
type B = IsNever<string> // false
```