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flutter/analysis_options.yaml
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# Specify analysis options. | |
# | |
# For a list of lints, see: http://dart-lang.github.io/linter/lints/ | |
# See the configuration guide for more | |
# https://github.com/dart-lang/sdk/tree/main/pkg/analyzer#configuring-the-analyzer | |
# | |
# There are other similar analysis options files in the flutter repos, | |
# which should be kept in sync with this file: | |
# | |
# - analysis_options.yaml (this file) | |
# - https://github.com/flutter/plugins/blob/master/analysis_options.yaml | |
# - https://github.com/flutter/engine/blob/master/analysis_options.yaml | |
# - https://github.com/flutter/packages/blob/master/analysis_options.yaml | |
# | |
# This file contains the analysis options used for code in the flutter/flutter | |
# repository. | |
analyzer: | |
language: | |
strict-casts: true | |
strict-raw-types: true | |
errors: | |
# allow self-reference to deprecated members (we do this because otherwise we have | |
# to annotate every member in every test, assert, etc, when we deprecate something) | |
deprecated_member_use_from_same_package: ignore | |
exclude: | |
- "bin/cache/**" | |
# Ignore protoc generated files | |
- "dev/conductor/lib/proto/*" | |
linter: | |
rules: | |
# This list is derived from the list of all available lints located at | |
# https://github.com/dart-lang/linter/blob/master/example/all.yaml | |
- always_declare_return_types | |
- always_put_control_body_on_new_line | |
# - always_put_required_named_parameters_first # we prefer having parameters in the same order as fields https://github.com/flutter/flutter/issues/10219 | |
- always_specify_types | |
# - always_use_package_imports # we do this commonly | |
- annotate_overrides | |
# - avoid_annotating_with_dynamic # conflicts with always_specify_types | |
- avoid_bool_literals_in_conditional_expressions | |
# - avoid_catches_without_on_clauses # blocked on https://github.com/dart-lang/linter/issues/3023 | |
# - avoid_catching_errors # blocked on https://github.com/dart-lang/linter/issues/3023 | |
- avoid_classes_with_only_static_members | |
- avoid_double_and_int_checks | |
- avoid_dynamic_calls | |
- avoid_empty_else | |
- avoid_equals_and_hash_code_on_mutable_classes | |
- avoid_escaping_inner_quotes | |
- avoid_field_initializers_in_const_classes | |
# - avoid_final_parameters # incompatible with prefer_final_parameters | |
- avoid_function_literals_in_foreach_calls | |
- avoid_implementing_value_types | |
- avoid_init_to_null | |
- avoid_js_rounded_ints | |
# - avoid_multiple_declarations_per_line # seems to be a stylistic choice we don't subscribe to | |
- avoid_null_checks_in_equality_operators | |
# - avoid_positional_boolean_parameters # would have been nice to enable this but by now there's too many places that break it | |
- avoid_print | |
# - avoid_private_typedef_functions # we prefer having typedef (discussion in https://github.com/flutter/flutter/pull/16356) | |
- avoid_redundant_argument_values | |
- avoid_relative_lib_imports | |
- avoid_renaming_method_parameters | |
- avoid_return_types_on_setters | |
- avoid_returning_null_for_void | |
# - avoid_returning_this # there are enough valid reasons to return `this` that this lint ends up with too many false positives | |
- avoid_setters_without_getters | |
- avoid_shadowing_type_parameters | |
- avoid_single_cascade_in_expression_statements | |
- avoid_slow_async_io | |
- avoid_type_to_string | |
- avoid_types_as_parameter_names | |
# - avoid_types_on_closure_parameters # conflicts with always_specify_types | |
- avoid_unnecessary_containers | |
- avoid_unused_constructor_parameters | |
- avoid_void_async | |
# - avoid_web_libraries_in_flutter # we use web libraries in web-specific code, and our tests prevent us from using them elsewhere | |
- await_only_futures | |
- camel_case_extensions | |
- camel_case_types | |
- cancel_subscriptions | |
# - cascade_invocations # doesn't match the typical style of this repo | |
- cast_nullable_to_non_nullable | |
# - close_sinks # not reliable enough | |
- collection_methods_unrelated_type | |
- combinators_ordering | |
# - comment_references # blocked on https://github.com/dart-lang/linter/issues/1142 | |
- conditional_uri_does_not_exist | |
# - constant_identifier_names # needs an opt-out https://github.com/dart-lang/linter/issues/204 | |
- control_flow_in_finally | |
- curly_braces_in_flow_control_structures | |
- dangling_library_doc_comments | |
- depend_on_referenced_packages | |
- deprecated_consistency | |
# - diagnostic_describe_all_properties # enabled only at the framework level (packages/flutter/lib) | |
- directives_ordering | |
# - discarded_futures # too many false positives, similar to unawaited_futures | |
# - do_not_use_environment # there are appropriate times to use the environment, especially in our tests and build logic | |
- empty_catches | |
- empty_constructor_bodies | |
- empty_statements | |
- eol_at_end_of_file | |
- exhaustive_cases | |
- file_names | |
- flutter_style_todos | |
- hash_and_equals | |
- implementation_imports | |
- implicit_call_tearoffs | |
- invalid_case_patterns | |
- iterable_contains_unrelated_type | |
# - join_return_with_assignment # not required by flutter style | |
- leading_newlines_in_multiline_strings | |
- library_annotations | |
- library_names | |
- library_prefixes | |
- library_private_types_in_public_api | |
# - lines_longer_than_80_chars # not required by flutter style | |
- list_remove_unrelated_type | |
# - literal_only_boolean_expressions # too many false positives: https://github.com/dart-lang/linter/issues/453 | |
- missing_whitespace_between_adjacent_strings | |
- no_adjacent_strings_in_list | |
- no_default_cases | |
- no_duplicate_case_values | |
- no_leading_underscores_for_library_prefixes | |
- no_leading_underscores_for_local_identifiers | |
- no_logic_in_create_state | |
# - no_runtimeType_toString # ok in tests; we enable this only in packages/ | |
- non_constant_identifier_names | |
- noop_primitive_operations | |
- null_check_on_nullable_type_parameter | |
- null_closures | |
# - omit_local_variable_types # opposite of always_specify_types | |
# - one_member_abstracts # too many false positives | |
- only_throw_errors # this does get disabled in a few places where we have legacy code that uses strings et al | |
- overridden_fields | |
- package_api_docs | |
- package_names | |
- package_prefixed_library_names | |
# - parameter_assignments # we do this commonly | |
- prefer_adjacent_string_concatenation | |
- prefer_asserts_in_initializer_lists | |
# - prefer_asserts_with_message # not required by flutter style | |
- prefer_collection_literals | |
- prefer_conditional_assignment | |
- prefer_const_constructors | |
- prefer_const_constructors_in_immutables | |
- prefer_const_declarations | |
- prefer_const_literals_to_create_immutables | |
# - prefer_constructors_over_static_methods # far too many false positives | |
- prefer_contains | |
# - prefer_double_quotes # opposite of prefer_single_quotes | |
# - prefer_expression_function_bodies # conflicts with https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#consider-using--for-short-functions-and-methods | |
- prefer_final_fields | |
- prefer_final_in_for_each | |
- prefer_final_locals | |
# - prefer_final_parameters # we should enable this one day when it can be auto-fixed (https://github.com/dart-lang/linter/issues/3104), see also parameter_assignments | |
- prefer_for_elements_to_map_fromIterable | |
- prefer_foreach | |
- prefer_function_declarations_over_variables | |
- prefer_generic_function_type_aliases | |
- prefer_if_elements_to_conditional_expressions | |
- prefer_if_null_operators | |
- prefer_initializing_formals | |
- prefer_inlined_adds | |
# - prefer_int_literals # conflicts with https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#use-double-literals-for-double-constants | |
- prefer_interpolation_to_compose_strings | |
- prefer_is_empty | |
- prefer_is_not_empty | |
- prefer_is_not_operator | |
- prefer_iterable_whereType | |
- prefer_mixin | |
# - prefer_null_aware_method_calls # "call()" is confusing to people new to the language since it's not documented anywhere | |
- prefer_null_aware_operators | |
- prefer_relative_imports | |
- prefer_single_quotes | |
- prefer_spread_collections | |
- prefer_typing_uninitialized_variables | |
- prefer_void_to_null | |
- provide_deprecation_message | |
# - public_member_api_docs # enabled on a case-by-case basis; see e.g. packages/analysis_options.yaml | |
- recursive_getters | |
# - require_trailing_commas # would be nice, but requires a lot of manual work: 10,000+ code locations would need to be reformatted by hand after bulk fix is applied | |
- secure_pubspec_urls | |
- sized_box_for_whitespace | |
- sized_box_shrink_expand | |
- slash_for_doc_comments | |
- sort_child_properties_last | |
- sort_constructors_first | |
# - sort_pub_dependencies # prevents separating pinned transitive dependencies | |
- sort_unnamed_constructors_first | |
- test_types_in_equals | |
- throw_in_finally | |
- tighten_type_of_initializing_formals | |
# - type_annotate_public_apis # subset of always_specify_types | |
- type_init_formals | |
# - unawaited_futures # too many false positives, especially with the way AnimationController works | |
- unnecessary_await_in_return | |
- unnecessary_brace_in_string_interps | |
- unnecessary_breaks | |
- unnecessary_const | |
- unnecessary_constructor_name | |
# - unnecessary_final # conflicts with prefer_final_locals | |
- unnecessary_getters_setters | |
# - unnecessary_lambdas # has false positives: https://github.com/dart-lang/linter/issues/498 | |
- unnecessary_late | |
- unnecessary_library_directive | |
- unnecessary_new | |
- unnecessary_null_aware_assignments | |
- unnecessary_null_aware_operator_on_extension_on_nullable | |
- unnecessary_null_checks | |
- unnecessary_null_in_if_null_operators | |
- unnecessary_nullable_for_final_variable_declarations | |
- unnecessary_overrides | |
- unnecessary_parenthesis | |
# - unnecessary_raw_strings # what's "necessary" is a matter of opinion; consistency across strings can help readability more than this lint | |
- unnecessary_statements | |
- unnecessary_string_escapes | |
- unnecessary_string_interpolations | |
- unnecessary_this | |
- unnecessary_to_list_in_spreads | |
# - unreachable_from_main # Do not enable this rule until it is un-marked as "experimental" and carefully re-evaluated. | |
- unrelated_type_equality_checks | |
- unsafe_html | |
- use_build_context_synchronously | |
- use_colored_box | |
# - use_decorated_box # leads to bugs: DecoratedBox and Container are not equivalent (Container inserts extra padding) | |
- use_enums | |
- use_full_hex_values_for_flutter_colors | |
- use_function_type_syntax_for_parameters | |
- use_if_null_to_convert_nulls_to_bools | |
- use_is_even_rather_than_modulo | |
- use_key_in_widget_constructors | |
- use_late_for_private_fields_and_variables | |
- use_named_constants | |
- use_raw_strings | |
- use_rethrow_when_possible | |
- use_setters_to_change_properties | |
# - use_string_buffers # has false positives: https://github.com/dart-lang/sdk/issues/34182 | |
- use_string_in_part_of_directives | |
- use_super_parameters | |
- use_test_throws_matchers | |
# - use_to_and_as_if_applicable # has false positives, so we prefer to catch this by code-review | |
- valid_regexps | |
- void_checks |