# Output

`import { Output } from "destack:test";`

Test output sink.

```ds title="Output"
export newtype interface Output {
    line(value: string): void;
    attach(artifact: Artifact): void;
}
```

[language/library/src/test/result.ds:11:17](https://github.com/destack-sh/destack/blob/main/language/library/src/test/result.ds#L11-L17)

## Members

### `line(value: string): void`

Write one output line.

### `attach(artifact: Artifact): void`

Attach one durable artifact.