# Specify analysis options. # # Until there are meta linter rules, each desired lint must be explicitly enabled. # See: https://github.com/dart-lang/linter/issues/288 # # 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/master/pkg/analyzer#configuring-the-analyzer # # There are four similar analysis options files in the flutter repos: # - analysis_options.yaml (this file) # - packages/flutter/lib/analysis_options_user.yaml # - https://github.com/flutter/plugins/blob/master/analysis_options.yaml # - https://github.com/flutter/engine/blob/master/analysis_options.yaml # # This file contains the analysis options used by Flutter tools, such as IntelliJ, # Android Studio, and the `flutter analyze` command. # # The flutter/plugins repo contains a copy of this file, which should be kept # in sync with this file. analyzer: language: enableSuperMixins: true strong-mode: implicit-dynamic: false errors: # treat missing required parameters as a warning (not a hint) missing_required_param: warning # TODO: https://github.com/flutter/flutter/issues/20114 # treat missing returns as a warning (not a hint) missing_return: ignore # allow having TODOs in the code todo: ignore exclude: - 'bin/cache/**' # the following two are relative to the stocks example and the flutter package respectively # see https://github.com/dart-lang/sdk/issues/28463 - 'lib/i18n/stock_messages_*.dart' - 'lib/src/http/**' linter: rules: # these rules are documented on and in the same order as # the Dart Lint rules page to make maintenance easier # 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_require_non_null_named_parameters - always_specify_types - annotate_overrides # - avoid_annotating_with_dynamic # conflicts with always_specify_types - avoid_as # - avoid_bool_literals_in_conditional_expressions # not yet tested # - avoid_catches_without_on_clauses # we do this commonly # - avoid_catching_errors # we do this commonly - avoid_classes_with_only_static_members # - avoid_double_and_int_checks # only useful when targeting JS runtime - avoid_empty_else - avoid_field_initializers_in_const_classes - avoid_function_literals_in_foreach_calls - avoid_init_to_null # - avoid_js_rounded_ints # only useful when targeting JS runtime - avoid_null_checks_in_equality_operators # - avoid_positional_boolean_parameters # not yet tested # - avoid_private_typedef_functions # we prefer having typedef (discussion in https://github.com/flutter/flutter/pull/16356) - avoid_relative_lib_imports - avoid_renaming_method_parameters - avoid_return_types_on_setters # - avoid_returning_null # we do this commonly # - avoid_returning_this # https://github.com/dart-lang/linter/issues/842 # - avoid_setters_without_getters # not yet tested # - avoid_single_cascade_in_expression_statements # not yet tested - avoid_slow_async_io # - avoid_types_as_parameter_names # https://github.com/dart-lang/linter/pull/954/files # - avoid_types_on_closure_parameters # conflicts with always_specify_types # - avoid_unused_constructor_parameters # https://github.com/dart-lang/linter/pull/847 - await_only_futures - camel_case_types - cancel_subscriptions # - cascade_invocations # not yet tested # - close_sinks # https://github.com/flutter/flutter/issues/5789 # - comment_references # blocked on https://github.com/dart-lang/dartdoc/issues/1153 # - constant_identifier_names # https://github.com/dart-lang/linter/issues/204 - control_flow_in_finally - directives_ordering - empty_catches - empty_constructor_bodies - empty_statements - hash_and_equals - implementation_imports # - invariant_booleans # https://github.com/flutter/flutter/issues/5790 - iterable_contains_unrelated_type # - join_return_with_assignment # not yet tested - library_names - library_prefixes - list_remove_unrelated_type # - literal_only_boolean_expressions # https://github.com/flutter/flutter/issues/5791 - no_adjacent_strings_in_list - no_duplicate_case_values - non_constant_identifier_names # - omit_local_variable_types # opposite of always_specify_types # - one_member_abstracts # too many false positives # - only_throw_errors # https://github.com/flutter/flutter/issues/5792 - 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_bool_in_asserts - 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 # not yet tested - prefer_contains - prefer_equal_for_default_values # - 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_locals - prefer_foreach # - prefer_function_declarations_over_variables # not yet tested - prefer_initializing_formals # - prefer_interpolation_to_compose_strings # not yet tested # - prefer_iterable_whereType # https://github.com/dart-lang/sdk/issues/32463 - prefer_is_empty - prefer_is_not_empty - prefer_single_quotes - prefer_typing_uninitialized_variables - recursive_getters - slash_for_doc_comments - sort_constructors_first - sort_unnamed_constructors_first - super_goes_last - test_types_in_equals - throw_in_finally # - type_annotate_public_apis # subset of always_specify_types - type_init_formals # - unawaited_futures # https://github.com/flutter/flutter/issues/5793 - unnecessary_brace_in_string_interps - unnecessary_const - unnecessary_getters_setters # - unnecessary_lambdas # https://github.com/dart-lang/linter/issues/498 - unnecessary_null_aware_assignments - unnecessary_null_in_if_null_operators - unnecessary_overrides - unnecessary_parenthesis - unnecessary_statements - unnecessary_this - unrelated_type_equality_checks - use_rethrow_when_possible # - use_setters_to_change_properties # not yet tested # - use_string_buffers # https://github.com/dart-lang/linter/pull/664 # - use_to_and_as_if_applicable # has false positives, so we prefer to catch this by code-review - valid_regexps # - void_checks # not yet tested