# FILE_OPEN_NONBLOCK

`import { FILE_OPEN_NONBLOCK } from "destack:fs/binding";`

Request nonblocking file behavior.

```ds title="FILE_OPEN_NONBLOCK"
const FILE_OPEN_NONBLOCK: FileOpenFlags
```

[language/library/src/fs/binding/file.ds:39](https://github.com/destack-sh/destack/blob/main/language/library/src/fs/binding/file.ds#L39)