# unreachable

`import { unreachable } from "destack:error";`

Mark this code path as unreachable.

```ds title="unreachable"
export declare function unreachable(): never
```

[language/library/src/error/panic.ds:59](https://github.com/destack-sh/destack/blob/main/language/library/src/error/panic.ds#L59)