# ok

`import { ok } from "destack:assert";`

Assert that `condition` is true.

```ds title="ok"
export function ok(condition: boolean, message?: string | undefined): void
```

[language/library/src/assert/assert.ds:42:44](https://github.com/destack-sh/destack/blob/main/language/library/src/assert/assert.ds#L42-L44)