---
title: errorDomain
framework: webkit
role: symbol
role_heading: Type Property
path: webkit/wkwebextension/matchpattern/errordomain
---

# errorDomain

A string that identifies the error domain.

## Declaration

```swift
nonisolated class let errorDomain: String
```

## See Also

### Errors

- [WKWebExtension.MatchPattern.Error](webkit/wkwebextension/matchpattern/error.md)
- [WKWebExtension.MatchPattern.Error.Code](webkit/wkwebextension/matchpattern/error/code.md)