invalid_annotation_target
The annotation '{0}' can only be used on {1}.
Description
#The analyzer produces this diagnostic when an annotation is applied to a kind of declaration that it doesn't support.
Example
#The following code produces this diagnostic because the optionalTypeArgs annotation isn't defined to be valid for top-level variables:
dart
import 'package:meta/meta.dart';
@optionalTypeArgs
int x = 0;Common fixes
#Remove the annotation from the declaration.
Unless stated otherwise, the documentation on this site reflects Dart 3.8.1. Page last updated on 2025-05-08. View source or report an issue.