---
title: Optional.Publisher.Output
framework: swift
role: symbol
role_heading: Type Alias
path: swift/optional/publisher-swift.struct/output-swift.typealias
---

# Optional.Publisher.Output

The kind of value published by this publisher.

## Declaration

```swift
typealias Output = Wrapped
```

## Discussion

Discussion This publisher produces the type wrapped by the optional.

## See Also

### Declaring Publisher Topography

- [Optional.Publisher.Failure](swift/optional/publisher-swift.struct/failure.md)