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Previously, VS Code would automatically show the warning:

Try adding the 'const' keyword to the constructor invocation

However, now it only appears if I explicitly add

prefer_const_constructors: true

in my analysis_options.yaml.

I want VS Code to show this warning automatically without needing to enable the rule manually in every project.

Flutter Version : 3.29.0 
Dart Version : 3.7.0

Previously, VS Code would automatically show the warning:

Try adding the 'const' keyword to the constructor invocation

However, now it only appears if I explicitly add

prefer_const_constructors: true

in my analysis_options.yaml.

I want VS Code to show this warning automatically without needing to enable the rule manually in every project.

Flutter Version : 3.29.0 
Dart Version : 3.7.0
  • flutter
  • lint
  • linter
  • flutter-lints
Share Improve this question edited Mar 28 at 10:17 Munsif Ali 6,4525 gold badges25 silver badges53 bronze badges asked Mar 28 at 7:13 Akhil GeeAkhil Gee 4472 silver badges16 bronze badges 0
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2 Answers 2

Reset to default 1

The const lint has been removed from flutter lints. You could check this issue https://github/dart-lang/core/issues/833 and https://github/flutter/flutter/issues/149932 or more details.

Right now, you would need to enable this lint rule in your `analysis_options.yaml` if you need it.

That has been removed by default check this issue https://github/dart-lang/core/issues/833 along with other lints like avoid_print which was enabled in flutter lints by default.

The following lints were removed in flutter_lints: 5.0.0

  • prefer_const_constructors
  • prefer_const_literals_to_create_immutables
  • prefer_const_declarations

in this PR https://github/flutter/flutter/pull/156011

if you want to enable that again add this in analysis_options.yaml

linter:
  rules:
    prefer_const_constructors: true

or you can use version lesser than 5.0.0 like flutter_lints: ^4.0.0

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