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An opiniated set of lint rules for Dart and Flutter projects. Made by yours truly Floating Dartists.

fd_lints #

Floating Dartists

Pub Version

An opiniated set of lint rules for Dart and Flutter projects. Made by yours truly Floating Dartists.

You can use 2 different sets of rules:

  • dart: for Dart projects
  • flutter: for Flutter projects (includes dart rules)

Installing fd_lints #

  • Add both fd_lints and custom_lint to your pubspec.yaml file:
dev_dependencies:
  custom_lint:
  fd_lints:
  • Include the set of rules you want to use and enable custom_lint's plugin in your analysis_options.yaml file:
include: package:fd_lints/dart.yaml # Recommended for Dart projects
# include: package:fd_lints/flutter.yaml # Recommended for Flutter projects

analyzer:
  plugins:
    - custom_lint

Analyzer #

Language #

Stricter type check is enabled by default. Applying the following rules:

  • strict-casts
  • strict-inference
  • strict-raw-types

Exclude #

The following files are excluded by default:

  • lib/**.g.dart
  • lib/**.freezed.dart
  • test/**.mocks.dart

Linter rules #

  • ℹ️ : info
  • ⚠️ : warning
  • ❌ : error

Custom #

Those rules were created by us by using the custom_lint package.

Rule Severity
avoid_non_null_assertion ⚠️
avoid_as ⚠️

Dart #

Rule Severity
always_use_package_imports ℹ️
avoid_dynamic_calls ℹ️
avoid_empty_else ℹ️
avoid_relative_lib_imports ℹ️
avoid_slow_async_io ⚠️
avoid_types_as_parameter_names ℹ️
cancel_subscriptions ⚠️
close_sinks ⚠️
control_flow_in_finally ℹ️
collection_methods_unrelated_type
empty_statements ℹ️
hash_and_equals ⚠️
literal_only_boolean_expressions ℹ️
no_duplicate_case_values ℹ️
prefer_void_to_null ℹ️
test_types_in_equals ⚠️
unnecessary_statements ℹ️
unrelated_type_equality_checks
valid_regexps ℹ️
always_declare_return_types ℹ️
annotate_overrides ℹ️
avoid_annotating_with_dynamic ⚠️
avoid_bool_literals_in_conditional_expressions ℹ️
avoid_catching_errors ⚠️
avoid_classes_with_only_static_members ℹ️
avoid_double_and_int_checks ℹ️
avoid_equals_and_hash_code_on_mutable_classes ℹ️
avoid_escaping_inner_quotes ℹ️
avoid_field_initializers_in_const_classes ℹ️
avoid_final_parameters ℹ️
avoid_init_to_null ℹ️
avoid_multiple_declarations_per_line ℹ️
avoid_null_checks_in_equality_operators ⚠️
avoid_positional_boolean_parameters ℹ️
avoid_redundant_argument_values ℹ️
avoid_renaming_method_parameters ℹ️
avoid_return_types_on_setters ℹ️
avoid_returning_null_for_void ℹ️
avoid_shadowing_type_parameters ⚠️
avoid_single_cascade_in_expression_statements ℹ️
avoid_unused_constructor_parameters ℹ️
avoid_void_async ⚠️
await_only_futures
camel_case_extensions ℹ️
camel_case_types ℹ️
cascade_invocations ℹ️
cast_nullable_to_non_nullable
combinators_ordering ℹ️
conditional_uri_does_not_exist
constant_identifier_names ℹ️
curly_braces_in_flow_control_structures ℹ️
deprecated_consistency ℹ️
directives_ordering ℹ️
empty_catches ℹ️
empty_constructor_bodies ℹ️
eol_at_end_of_file ℹ️
exhaustive_cases ⚠️
file_names ℹ️
implementation_imports ℹ️
implicit_call_tearoffs ℹ️
join_return_with_assignment ℹ️
leading_newlines_in_multiline_strings ℹ️
library_names ℹ️
library_prefixes ℹ️
library_private_types_in_public_api ℹ️
no_leading_underscores_for_library_prefixes ℹ️
no_leading_underscores_for_local_identifiers ℹ️
no_runtimeType_toString ⚠️
non_constant_identifier_names ℹ️
noop_primitive_operations ℹ️
null_check_on_nullable_type_parameter
null_closures
only_throw_errors ⚠️
overridden_fields ℹ️
package_prefixed_library_names ℹ️
parameter_assignments ⚠️
prefer_adjacent_string_concatenation ℹ️
prefer_asserts_in_initializer_lists ℹ️
prefer_collection_literals ℹ️
prefer_conditional_assignment ℹ️
prefer_const_constructors ℹ️
prefer_const_declarations ℹ️
prefer_constructors_over_static_methods ℹ️
prefer_contains ⚠️
prefer_final_fields ℹ️
prefer_final_in_for_each ℹ️
prefer_final_locals ℹ️
prefer_for_elements_to_map_fromIterable ⚠️
prefer_function_declarations_over_variables ℹ️
prefer_generic_function_type_aliases ℹ️
prefer_if_elements_to_conditional_expressions ℹ️
prefer_if_null_operators ℹ️
prefer_initializing_formals ℹ️
prefer_inlined_adds ℹ️
prefer_int_literals ℹ️
prefer_interpolation_to_compose_strings ℹ️
prefer_is_empty ⚠️
prefer_is_not_empty ⚠️
prefer_is_not_operator ℹ️
prefer_iterable_whereType ℹ️
prefer_mixin ℹ️
prefer_null_aware_method_calls
prefer_null_aware_operators
prefer_spread_collections ℹ️
prefer_typing_uninitialized_variables
provide_deprecation_message ℹ️
recursive_getters
require_trailing_commas ℹ️
slash_for_doc_comments ℹ️
sort_constructors_first ℹ️
sort_unnamed_constructors_first ℹ️
tighten_type_of_initializing_formals
type_annotate_public_apis
type_init_formals ℹ️
unawaited_futures ⚠️
unnecessary_await_in_return ℹ️
unnecessary_brace_in_string_interps ℹ️
unnecessary_breaks ℹ️
unnecessary_const ℹ️
unnecessary_constructor_name ℹ️
unnecessary_getters_setters ℹ️
unnecessary_lambdas ℹ️
unnecessary_late ℹ️
unnecessary_new ℹ️
unnecessary_null_aware_assignments ℹ️
unnecessary_null_aware_operator_on_extension_on_nullable ℹ️
unnecessary_null_checks ℹ️
unnecessary_null_in_if_null_operators ℹ️
unnecessary_nullable_for_final_variable_declarations ℹ️
unnecessary_overrides ℹ️
unnecessary_parenthesis ℹ️
unnecessary_raw_strings ℹ️
unnecessary_string_escapes ℹ️
unnecessary_string_interpolations ℹ️
unnecessary_this ℹ️
unnecessary_to_list_in_spreads ℹ️
use_enums ⚠️
use_function_type_syntax_for_parameters ℹ️
use_if_null_to_convert_nulls_to_bools ℹ️
use_is_even_rather_than_modulo ℹ️
use_late_for_private_fields_and_variables ℹ️
use_named_constants ℹ️
use_rethrow_when_possible ℹ️
use_setters_to_change_properties ℹ️
use_string_buffers ⚠️
use_string_in_part_of_directives ℹ️
use_super_parameters ℹ️
use_test_throws_matchers ℹ️
void_checks ℹ️
invalid_use_of_visible_for_testing_member
missing_return
missing_required_param
invalid_annotation_target ignored

Flutter #

Rule Severity
avoid_print ℹ️
avoid_web_libraries_in_flutter ℹ️
avoid_unnecessary_containers ℹ️
no_logic_in_create_state ℹ️
use_build_context_synchronously
use_key_in_widget_constructors ℹ️
avoid_function_literals_in_foreach_calls ℹ️
avoid_js_rounded_ints ⚠️
sized_box_for_whitespace ℹ️
sized_box_shrink_expand ℹ️
sort_child_properties_last ℹ️
use_colored_box ℹ️
use_decorated_box ℹ️
use_full_hex_values_for_flutter_colors ⚠️
prefer_const_constructors_in_immutables ℹ️
prefer_const_literals_to_create_immutables ℹ️
flutter_style_todos ℹ️
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Publisher

verified publisherfloating-dartists.dev

An opiniated set of lint rules for Dart and Flutter projects. Made by yours truly Floating Dartists.

Repository (GitHub)
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Documentation

API reference

License

MIT (LICENSE)

Dependencies

analyzer, analyzer_plugin, custom_lint_builder

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