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use_super_parameters

Parameter '{0}' could be a super parameter.

Parameters '{0}' could be super parameters.

Description

#

The analyzer produces this diagnostic when a parameter to a constructor is passed to a super constructor without being referenced or modified and a super parameter isn't used.

Example

#

The following code produces this diagnostic because the parameters of the constructor for B are only used as arguments to the super constructor:

dart
class A {
  A({int? x, int? y});
}
class B extends A {
  B({int? x, int? y}) : super(x: x, y: y);
}

Common fixes

#

Use a super parameter to pass the arguments:

dart
class A {
  A({int? x, int? y});
}
class B extends A {
  B({super.x, super.y});
}