Add new dart 2.17 lints about flutter_corelibrary HOT 6 CLOSED

use_colored_box – it's a no no, see below

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new use_enums

I thought Dart only supports primitive enums (I mean, like C)

Oh apparently it's a new cool 2.17 feature

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use_super_parameters – awesome & great & ❤️

Interesting thing though is that Key? key argument is not subject to analyzer's dart[unused_element] lint if it's in a public constructor. See below:

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Interesting thing though is that Key? key argument is not subject to analyzer's dart[unused_element] lint if it's in a public constructor.

None of the properties are subject to it in public constructors. Analyzer can now detect unused props in private constructors.

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Ah, right. I didn't bother to drill down deeper :P

use_enums – okay as well
null_check_on_nullable_type_parameter – haven't found a single place in 2 medium-sized projects where it'd appear, so I guess OK

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as for use_colored_box – it's fixed in dart-lang/linter v1.24.0

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