avoid-unnecessary-overrides

v1.22.0

warning

effort: 2m

recommended

has auto-fix

starter+

Warns when a parent declaration is overridden by a declaration without an implementation.

Example

❌ Bad:

abstract class B {
  String get field;

  void foo();
}

abstract class A extends B {
  @override
  // LINT: This override is unnecessary as it does not change the signature and does not add implementation. Try removing it.
  String get field;

  @override
  // LINT: This override is unnecessary as it does not change the signature and does not add implementation. Try removing it.
  Future<void> foo();
}

mixin M on B {
  @override
  // LINT: This override is unnecessary as it does not change the signature and does not add implementation. Try removing it.
  String get field;
}

✅ Good:

abstract class B {
  String get field;

  void foo();
}

class C extends B {
  @override
  String get field => 'hi'; // Correct, has implementation

  @override
  Future<void> foo() async { ... }
}