analysis_options.yaml

# Defines a default set of lint rules enforced for
# projects at Google. For details and rationale,
# see https://github.com/dart-lang/pedantic#enabled-lints.
include: package:flutter_lints/flutter.yaml

analyzer:
  strong-mode:
    implicit-casts: false
    # implicit-dynamic: false

  errors:
    # treat missing required parameters as a warning (not a hint)
    missing_required_param: warning
    # treat missing returns as a warning (not a hint)
    missing_return: warning
    # allow having TODOs in the code
    todo: ignore
    # Ignore errors like
    # 'super_goes_last' is a deprecated lint rule and should not be used • included_file_warning
    included_file_warning: ignore

linter:
  rules:
  # these rules are documented on and in the same order as
  # the Dart Lint rules page to make maintenance easier
  # http://dart-lang.github.io/linter/lints/

  # === error rules ===
  - avoid_empty_else
  - avoid_slow_async_io
  - cancel_subscriptions
  # - close_sinks # https://github.com/flutter/flutter/issues/5789
  # - comment_references # blocked on https://github.com/dart-lang/dartdoc/issues/1153
  - control_flow_in_finally
  - empty_statements
  - hash_and_equals
  # - invariant_booleans # https://github.com/flutter/flutter/issues/5790
  - iterable_contains_unrelated_type
  - list_remove_unrelated_type
  # - literal_only_boolean_expressions # https://github.com/flutter/flutter/issues/5791
  - no_adjacent_strings_in_list
  - no_duplicate_case_values
  - test_types_in_equals
  - throw_in_finally
  - unrelated_type_equality_checks
  - valid_regexps

  # === style rules ===
  - always_declare_return_types
  # - always_put_control_body_on_new_line
  - always_require_non_null_named_parameters
  # - always_specify_types
  - annotate_overrides
  # - avoid_annotating_with_dynamic # not yet tested
  # - avoid_as # 2019-01-30 removed for no-implicit-casts
  # - avoid_catches_without_on_clauses # not yet tested
  # - avoid_catching_errors # not yet tested
  # - avoid_classes_with_only_static_members # not yet tested
  # - avoid_function_literals_in_foreach_calls # not yet tested
  - avoid_init_to_null
  - avoid_null_checks_in_equality_operators
  # - avoid_positional_boolean_parameters # not yet tested
  - avoid_return_types_on_setters
  # - avoid_returning_null # not yet tested
  # - avoid_returning_this # not yet tested
  # - avoid_setters_without_getters # not yet tested
  # - avoid_types_on_closure_parameters # not yet tested
  - await_only_futures
  - camel_case_types
  # - cascade_invocations # not yet tested
  # - constant_identifier_names # https://github.com/dart-lang/linter/issues/204
  - directives_ordering
  - empty_catches
  - empty_constructor_bodies
  - implementation_imports
  # - join_return_with_assignment # not yet tested
  - library_names
  - library_prefixes
  - 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_prefixed_library_names
  # - parameter_assignments # we do this commonly
  - prefer_adjacent_string_concatenation
  - prefer_collection_literals
  # - prefer_conditional_assignment # not yet tested
  - prefer_const_constructors
  # - 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 # https://github.com/dart-lang/linter/issues/506
  # - prefer_final_locals
  # - prefer_foreach # not yet tested
  # - prefer_function_declarations_over_variables # not yet tested
  - prefer_initializing_formals
  # - prefer_interpolation_to_compose_strings # not yet tested
  - prefer_is_empty
  - prefer_is_not_empty
  - prefer_void_to_null
  # - recursive_getters # https://github.com/dart-lang/linter/issues/452
  - slash_for_doc_comments
  - sort_constructors_first
  - sort_unnamed_constructors_first
  # - super_goes_last
  # - 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_new
  - unnecessary_null_aware_assignments
  - unnecessary_null_in_if_null_operators
  # - unnecessary_overrides # https://github.com/dart-lang/linter/issues/626 and https://github.com/dart-lang/linter/issues/627
  - unnecessary_statements
  - unnecessary_this
  - 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

  # === pub rules ===
  - package_names

  # === doc rules ===
  - public_member_api_docs