[Rule Proposition] avoid_unassigned_late_fields

[TesteurManiak]

@Pierre-Monier @MeixDev what do you think of this rule?

AVOID late fields that are unassigned inside their own class's constructor or method.

BAD:

class Foo {
  late final int bar;
}

GOOD:

class Foo {
  late final int bar;

  Foo() {
    bar = 42;
  }
}

GOOD:

class Foo {
  late final int bar;

  void baz() {
    bar = 24;
  }
}

GOOD:

class Foo {
  late final int bar;

  Foo() : bar = 42;
}

[TesteurManiak]

You can check a first try here: https://github.com/Floating-Dartists/fd_lints/blob/feat/avoid-unassigned-late-fields/lib/src/lints/avoid_unassigned_late_fields.dart

[Pierre-Monier]

Great one, I can't review your custom lint code because I have no idea of how it works

[TesteurManiak]

Don't worry the idea was more, to know if you'd have any other test case in mind to ensure that there's no forgotten edge case 👍

[TesteurManiak]

Added in #6

[Pierre-Monier]

LGTM