analysis_options.yaml 11.1 KB
Newer Older
1 2
# Specify analysis options.
#
3 4 5
# For a list of lints, see: https://dart.dev/lints
# For guidelines on configuring static analysis, see:
# https://dart.dev/guides/language/analysis-options
6 7 8 9 10
#
# 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)
11 12
#   - https://github.com/flutter/engine/blob/main/analysis_options.yaml
#   - https://github.com/flutter/packages/blob/main/analysis_options.yaml
13
#
14 15
# This file contains the analysis options used for code in the flutter/flutter
# repository.
16 17

analyzer:
18
  language:
19
    strict-casts: true
20
    strict-inference: true
21
    strict-raw-types: true
22
  errors:
23 24 25
    # 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
26
  exclude:
27
    - "bin/cache/**"
28
      # Ignore protoc generated files
29
    - "dev/conductor/lib/proto/*"
30 31 32

linter:
  rules:
33
    # This list is derived from the list of all available lints located at
34
    # https://github.com/dart-lang/linter/blob/main/example/all.yaml
35 36 37 38
    - 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
39
    # - always_use_package_imports # we do this commonly
40 41
    - annotate_overrides
    # - avoid_annotating_with_dynamic # conflicts with always_specify_types
42
    - avoid_bool_literals_in_conditional_expressions
43 44
    # - 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
45
    # - avoid_classes_with_only_static_members # we do this commonly for `abstract final class`es
46
    - avoid_double_and_int_checks
47
    - avoid_dynamic_calls
48
    - avoid_empty_else
49
    - avoid_equals_and_hash_code_on_mutable_classes
50
    - avoid_escaping_inner_quotes
51
    - avoid_field_initializers_in_const_classes
52
    # - avoid_final_parameters # incompatible with prefer_final_parameters
53
    - avoid_function_literals_in_foreach_calls
54
    # - avoid_implementing_value_types # see https://github.com/dart-lang/linter/issues/4558
55
    - avoid_init_to_null
56
    - avoid_js_rounded_ints
57
    # - avoid_multiple_declarations_per_line # seems to be a stylistic choice we don't subscribe to
58
    - avoid_null_checks_in_equality_operators
59 60
    # - avoid_positional_boolean_parameters # would have been nice to enable this but by now there's too many places that break it
    - avoid_print
61
    # - avoid_private_typedef_functions # we prefer having typedef (discussion in https://github.com/flutter/flutter/pull/16356)
62
    - avoid_redundant_argument_values
63 64 65 66
    - avoid_relative_lib_imports
    - avoid_renaming_method_parameters
    - avoid_return_types_on_setters
    - avoid_returning_null_for_void
67
    # - avoid_returning_this # there are enough valid reasons to return `this` that this lint ends up with too many false positives
68
    - avoid_setters_without_getters
Ian Hickson's avatar
Ian Hickson committed
69
    - avoid_shadowing_type_parameters
70
    - avoid_single_cascade_in_expression_statements
71
    - avoid_slow_async_io
72
    - avoid_type_to_string
73 74
    - avoid_types_as_parameter_names
    # - avoid_types_on_closure_parameters # conflicts with always_specify_types
75
    - avoid_unnecessary_containers
76 77
    - avoid_unused_constructor_parameters
    - avoid_void_async
78
    # - avoid_web_libraries_in_flutter # we use web libraries in web-specific code, and our tests prevent us from using them elsewhere
79
    - await_only_futures
80
    - camel_case_extensions
81 82
    - camel_case_types
    - cancel_subscriptions
83
    # - cascade_invocations # doesn't match the typical style of this repo
84
    - cast_nullable_to_non_nullable
85
    # - close_sinks # not reliable enough
86
    - collection_methods_unrelated_type
87
    - combinators_ordering
88
    # - comment_references # blocked on https://github.com/dart-lang/linter/issues/1142
89
    - conditional_uri_does_not_exist
90 91
    # - constant_identifier_names # needs an opt-out https://github.com/dart-lang/linter/issues/204
    - control_flow_in_finally
92
    - curly_braces_in_flow_control_structures
93
    - dangling_library_doc_comments
94
    - depend_on_referenced_packages
95
    - deprecated_consistency
96
    # - deprecated_member_use_from_same_package # we allow self-references to deprecated members
97
    # - diagnostic_describe_all_properties # enabled only at the framework level (packages/flutter/lib)
98
    - directives_ordering
99
    # - discarded_futures # too many false positives, similar to unawaited_futures
100
    # - do_not_use_environment # there are appropriate times to use the environment, especially in our tests and build logic
101 102 103
    - empty_catches
    - empty_constructor_bodies
    - empty_statements
104
    - eol_at_end_of_file
105
    - exhaustive_cases
106
    - file_names
107 108 109
    - flutter_style_todos
    - hash_and_equals
    - implementation_imports
110
    - implicit_call_tearoffs
111
    - implicit_reopen
112
    - invalid_case_patterns
Ian Hickson's avatar
Ian Hickson committed
113
    # - join_return_with_assignment # not required by flutter style
114
    - leading_newlines_in_multiline_strings
115
    - library_annotations
116 117
    - library_names
    - library_prefixes
118
    - library_private_types_in_public_api
Ian Hickson's avatar
Ian Hickson committed
119
    # - lines_longer_than_80_chars # not required by flutter style
120
    - literal_only_boolean_expressions
121
    # - matching_super_parameters # blocked on https://github.com/dart-lang/language/issues/2509
122
    - missing_whitespace_between_adjacent_strings
123
    - no_adjacent_strings_in_list
124
    - no_default_cases
125
    - no_duplicate_case_values
126
    - no_leading_underscores_for_library_prefixes
127
    - no_leading_underscores_for_local_identifiers
128
    - no_literal_bool_comparisons
Ian Hickson's avatar
Ian Hickson committed
129 130
    - no_logic_in_create_state
    # - no_runtimeType_toString # ok in tests; we enable this only in packages/
131
    - no_self_assignments
132
    - no_wildcard_variable_uses
133
    - non_constant_identifier_names
134
    - noop_primitive_operations
135
    - null_check_on_nullable_type_parameter
136
    - null_closures
137 138
    # - omit_local_variable_types # opposite of always_specify_types
    # - one_member_abstracts # too many false positives
139
    - only_throw_errors # this does get disabled in a few places where we have legacy code that uses strings et al
140 141
    - overridden_fields
    - package_api_docs
142
    - package_names
143 144 145 146
    - package_prefixed_library_names
    # - parameter_assignments # we do this commonly
    - prefer_adjacent_string_concatenation
    - prefer_asserts_in_initializer_lists
Ian Hickson's avatar
Ian Hickson committed
147
    # - prefer_asserts_with_message # not required by flutter style
148
    - prefer_collection_literals
149
    - prefer_conditional_assignment
Dan Field's avatar
Dan Field committed
150
    - prefer_const_constructors
151 152 153
    - prefer_const_constructors_in_immutables
    - prefer_const_declarations
    - prefer_const_literals_to_create_immutables
Ian Hickson's avatar
Ian Hickson committed
154
    # - prefer_constructors_over_static_methods # far too many false positives
155
    - prefer_contains
156
    # - prefer_double_quotes # opposite of prefer_single_quotes
157 158
    # - 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
159
    - prefer_final_in_for_each
160
    - prefer_final_locals
161
    # - prefer_final_parameters # adds too much verbosity
162
    - prefer_for_elements_to_map_fromIterable
163
    - prefer_foreach
164
    - prefer_function_declarations_over_variables
165
    - prefer_generic_function_type_aliases
166
    - prefer_if_elements_to_conditional_expressions
167
    - prefer_if_null_operators
168
    - prefer_initializing_formals
169
    - prefer_inlined_adds
170
    # - prefer_int_literals # conflicts with https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#use-double-literals-for-double-constants
171
    - prefer_interpolation_to_compose_strings
172
    - prefer_is_empty
173
    - prefer_is_not_empty
174
    - prefer_is_not_operator
175
    - prefer_iterable_whereType
176
    - prefer_mixin
177
    # - prefer_null_aware_method_calls # "call()" is confusing to people new to the language since it's not documented anywhere
178
    - prefer_null_aware_operators
179
    - prefer_relative_imports
180
    - prefer_single_quotes
181
    - prefer_spread_collections
182 183
    - prefer_typing_uninitialized_variables
    - prefer_void_to_null
184
    - provide_deprecation_message
185 186
    # - public_member_api_docs # enabled on a case-by-case basis; see e.g. packages/analysis_options.yaml
    - recursive_getters
187
    # - 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
188
    - secure_pubspec_urls
189
    - sized_box_for_whitespace
190
    - sized_box_shrink_expand
191
    - slash_for_doc_comments
192
    - sort_child_properties_last
193
    - sort_constructors_first
194
    # - sort_pub_dependencies # prevents separating pinned transitive dependencies
195 196 197
    - sort_unnamed_constructors_first
    - test_types_in_equals
    - throw_in_finally
198
    - tighten_type_of_initializing_formals
199 200
    # - type_annotate_public_apis # subset of always_specify_types
    - type_init_formals
201
    - type_literal_in_constant_pattern
202
    # - unawaited_futures # too many false positives, especially with the way AnimationController works
203
    - unnecessary_await_in_return
204
    - unnecessary_brace_in_string_interps
205
    - unnecessary_breaks
206
    - unnecessary_const
207
    - unnecessary_constructor_name
208
    # - unnecessary_final # conflicts with prefer_final_locals
209 210
    - unnecessary_getters_setters
    # - unnecessary_lambdas # has false positives: https://github.com/dart-lang/linter/issues/498
211
    - unnecessary_late
212
    - unnecessary_library_directive
213 214
    - unnecessary_new
    - unnecessary_null_aware_assignments
215
    - unnecessary_null_aware_operator_on_extension_on_nullable
216
    - unnecessary_null_checks
217
    - unnecessary_null_in_if_null_operators
218
    - unnecessary_nullable_for_final_variable_declarations
219 220
    - unnecessary_overrides
    - unnecessary_parenthesis
221
    # - unnecessary_raw_strings # what's "necessary" is a matter of opinion; consistency across strings can help readability more than this lint
222
    - unnecessary_statements
223
    - unnecessary_string_escapes
224
    - unnecessary_string_interpolations
225
    - unnecessary_this
226
    - unnecessary_to_list_in_spreads
227
    - unreachable_from_main
228
    - unrelated_type_equality_checks
229
    - unsafe_html
230
    - use_build_context_synchronously
231
    - use_colored_box
232
    # - use_decorated_box # leads to bugs: DecoratedBox and Container are not equivalent (Container inserts extra padding)
233
    - use_enums
234
    - use_full_hex_values_for_flutter_colors
235
    - use_function_type_syntax_for_parameters
236
    - use_if_null_to_convert_nulls_to_bools
237
    - use_is_even_rather_than_modulo
238
    - use_key_in_widget_constructors
239
    - use_late_for_private_fields_and_variables
240
    - use_named_constants
241
    - use_raw_strings
242
    - use_rethrow_when_possible
243
    - use_setters_to_change_properties
244
    # - use_string_buffers # has false positives: https://github.com/dart-lang/sdk/issues/34182
245
    - use_string_in_part_of_directives
246
    - use_super_parameters
247
    - use_test_throws_matchers
248 249
    # - use_to_and_as_if_applicable # has false positives, so we prefer to catch this by code-review
    - valid_regexps
250
    - void_checks