avoid-keywords-in-wildcard-pattern

added in: 1.7.0

style

🛠

Dart 3.0+

preset: recommended

Warns when a wildcard pattern has declaration keywords.

Example

❌ Bad:

void fn() {
  final animal = 'hello';

  final value = switch (animal) {
    final Object? _ => 'bad', // LINT
    var _ => 'bad', // LINT
    final _ => 'bad', // LINT
  };
}

✅ Good:

void fn() {
  final animal = 'hello';

  final value = switch (animal) {
    Object? _ => 'good',
    _ => 'good',
    Object _ => 'good',
  };
}