leobit_lints 0.9.1

Published Aug 12, 2025
SDKdartflutter
Platformandroidioswindowslinuxmacos

Lints for Dart and Flutter with some custom rules from Leobit

Leobit Lints

Lint rules for Dart and Flutter developed by Leobit.

Note: This package was inspired by Very Good Analysis.

Usage

To use the lints, add as a dev dependency in your pubspec.yaml:

dev_dependencies:
  leobit_lints: <latest-version>

Then, add an include in analysis_options.yaml:

include: package:leobit_lints/leobit_lints.yaml

Or you can include lints from dart library only (same as leobit_lints.yaml, but without custom ones):

include: package:leobit_lints/standard_lints_only.yaml

Custom Rules:

Here is the table of custom rules with information about them.

NameVersionDescriptionExceptions
avoid_bang_operatorv0.1.0Forbids to use a bang operator ! as it may result in unexpected runtime exceptions.None.
avoid_dynamic_typev0.4.0Forbids to use a dynamic keyword.dynamic is allowed inside Map<> for json serialization.
avoid_late_keywordv0.1.0Forbids late keyword as it may result in unexpected runtime exceptions.late is allowed only with instant initializer.
avoid_redundant_asyncv0.3.0Finds redundant async functions, method and keywords.Overridden methods and getters.
avoid_widget_functionv0.4.0Forbids return widget from getters, methods and functions, because it is anti-pattern in Flutter. Prefer extracting it to separate widget.Overridden methods and getters. Allows to return Provider and subtypes.
prefer_correct_dispose_orderv0.5.0Forces developers to put super.dispose() calls in the end of method. Only for StatefulWidget.None.
prefer_returning_conditionv0.5.0Finds if-else statements with 'return' of boolean literal in both 'then' and 'else' statements. Proposes to return condition instead.None.
strict_double_literalv0.6.0Forces developers to remove redundant zeros from double literals.None.
use_const_borderv0.2.0Forces developers to use Border.fromBorderSide instead of Border.all, so const modifier can be added.Some of Border.all arguments are not const.
use_const_border_radiusv0.2.0Forces developers to use BorderRadius.all instead of BorderRadius.circular, so const modifier can be added.Some of BorderRadius.circular arguments are not const.
use_list_viewv0.3.0Forces developers to use ListView instead of SingleChildScrollView with nested ColumnNone.