prefer-explicit-function-type

added in: 1.11.0

warning

Warns when a Function type does not specify the return type and arguments.

Example

❌ Bad:

class SomeWidget {
  final Function onTap; // LINT

  const SomeWidget(this.onTap);
}

✅ Good:

class SomeWidget {
  final void Function() onTap;

  const SomeWidget(this.onTap);
}