When click on "Create constructor with final fields, required named", it generates syntax error

[bwilkerson]

STEPS TO REPRODUCE:

• Create a Flutter project with Dart language
• Create a Dart class
• Create a attribute starting with underscore
• Mouse over on the name of attribute
• Click on More Options...
• Select the "Create constructor with final fields, required named" option
• The IDE will generate the constructor with syntax error: "Named parameters can't start with an underscore"

Possible solution

When click on "Create constructor with final fields, required named", it would be interesting generate like the following:

const ButtonIncrementDefault({super.key, required Widget buttonChild, required void Function() onPressed})
      : _buttonChild = buttonChild, _onPressed = onPressed;

Instead of:

 const ButtonIncrementDefault({super.key, required this._buttonChild, required this._onPressed});

[bwilkerson]

@eljames

Is ButtonIncrementDefault a subclass (directly or indirectly) of Flutter's Widget class? I suspect so, but wanted to confirm in order to make it easier to debug the problem.

[eljames]

@eljames

Is ButtonIncrementDefault a subclass (directly or indirectly) of Flutter's Widget class? I suspect so, but wanted to confirm in order to make it easier to debug the problem.

@bwilkerson Yes. The ButtonIncrementDefault is subclass of Widget.
But I didn't imagine that the problem can show only on Widget subclasses. I will test for other than Widget subclasses. Thank you.

[bwilkerson]

I don't know whether the problem is isolated to widgets, I just know that a quick glance at the implementation showed that we are special casing widgets in at least one place. The problem might be completely unrelated, I haven't yet tried writing a test.

[scheglov]

@fshcheglov I think this is a good issue for you to solve.