avoid-missed-calls

added in: 1.3.0

warning

🛠

preset: recommended

Warns when a method that should be invoked is passed as tear-off.

Example

❌ Bad:

class SomeClass {
  final Future<void> Function() callback;
  final void Function() regular;
  final String Function() another;

  const SomeClass({
    required this.callback,
    required this.regular,
    required this.another,
  });
}

void _handle() {
  ...
}

String _strHandle() => 'Dart Code Metrics';

void main() {
  SomeClass(
    callback: () async => _handle, // LINT
    regular: () => _handle, // LINT
    another: _strHandle,
  );
}

✅ Good:

class SomeClass {
  final Future<void> Function() callback;
  final void Function() regular;
  final String Function() another;

  const SomeClass({
    required this.callback,
    required this.regular,
    required this.another,
  });
}

void _handle() {
  ...
}

String _strHandle() => 'Dart Code Metrics';

void main() {
  SomeClass(
    callback: () async => _handle(),
    regular: () => _handle(),
    another: _strHandle,
  );
}