dispose-provided-instances

added in: 1.19.0

warning

Pro+

Warns when an instance with a dispose method created inside a provider does not have the dispose method called in ref.onDispose.

Not disposing such instances may lead to memory leaks and should be avoided.

Example

❌ Bad:

Provider.autoDispose((ref) {
  final instance = DisposableService(); // LINT: This 'Provider' is not disposed, which can lead to a memory leak.

  return instance;
});

class DisposableService {
  void dispose() {}
}

✅ Good:

Provider.autoDispose((ref) {
  final instance = DisposableService();

  ref.onDispose(instance.dispose); // Correct, 'disposed' method is added to 'ref.onDispose'

  return instance;
});

class DisposableService {
  void dispose() {}
}