---
title: WKWebExtensionContext.NotificationUserInfoKey
framework: webkit
role: symbol
role_heading: Structure
path: webkit/wkwebextensioncontext/notificationuserinfokey
---

# WKWebExtensionContext.NotificationUserInfoKey

Constants for specifying web extension context information in notifications.

## Declaration

```swift
struct NotificationUserInfoKey
```

## Topics

### Type properties

- [matchPatterns](webkit/wkwebextensioncontext/notificationuserinfokey/matchpatterns.md)
- [permissions](webkit/wkwebextensioncontext/notificationuserinfokey/permissions.md)

### Initializers

- [init(_:)](webkit/wkwebextensioncontext/notificationuserinfokey/init(_:).md)
- [init(rawValue:)](webkit/wkwebextensioncontext/notificationuserinfokey/init(rawvalue:).md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Structures

- [WKWebExtensionContext.Error](webkit/wkwebextensioncontext/error.md)