analysis_options.yaml

analyzer:
  plugins:
    - dart_code_metrics

linter:
  # https://dart-lang.github.io/linter/lints/index.html.
  rules:
    # Errors
    always_use_package_imports: true
    avoid_slow_async_io: true
    avoid_type_to_string: true
    cancel_subscriptions: true
    close_sinks: true
    literal_only_boolean_expressions: true
    no_adjacent_strings_in_list: true
    test_types_in_equals: true
    throw_in_finally: true
    unnecessary_statements: true

    # Styles
    always_declare_return_types: true
    always_put_control_body_on_new_line: true
    always_put_required_named_parameters_first: true
    always_specify_types: true
    avoid_bool_literals_in_conditional_expressions: true
    avoid_implementing_value_types: true
    avoid_init_to_null: true
    avoid_js_rounded_ints: true
    avoid_redundant_argument_values: true
    avoid_returning_this: true
    avoid_setters_without_getters: true
    avoid_unused_constructor_parameters: true
    avoid_void_async: true
    deprecated_consistency: true
    directives_ordering: true
    do_not_use_environment: true
    eol_at_end_of_file: true
    flutter_style_todos: true
    join_return_with_assignment: true
    leading_newlines_in_multiline_strings: true
    no_runtimeType_toString: true
    noop_primitive_operations: true
    only_throw_errors: true
    prefer_asserts_in_initializer_lists: true
    prefer_constructors_over_static_methods: true
    prefer_int_literals: true
    prefer_single_quotes: true
    sort_child_properties_last: true
    tighten_type_of_initializing_formals: true
    avoid_function_literals_in_foreach_calls: true
    unawaited_futures: true
    unnecessary_await_in_return: true
    unnecessary_constructor_name: true
    unnecessary_null_aware_assignments: true
    unnecessary_null_checks: true # experimental
    unnecessary_nullable_for_final_variable_declarations: true # experimental
    unnecessary_parenthesis: true
    unnecessary_raw_strings: true
    use_if_null_to_convert_nulls_to_bools: true
    use_is_even_rather_than_modulo: true
    use_named_constants: true
    use_raw_strings: true
    use_string_buffers: true
    constant_identifier_names: false
    # https://stackoverflow.com/questions/53492705/does-using-const-in-the-widget-tree-improve-performance
    prefer_const_constructors: true
    prefer_const_declarations: true
    prefer_const_literals_to_create_immutables: true
    unnecessary_const: true

# https://dart.dev/guides/language/analysis-options

dart_code_metrics:
  anti-patterns:
    - long-method:
        severity: warning
    - long-parameter-list:
        severity: warning
  metrics:
    cyclomatic-complexity: 20
    maintainability-index: 50
    maximum-nesting: 5
    number-of-parameters: 4
    number-of-methods: 15
    source-lines-of-code: 80
    lines-of-code: 100
    halstead-volume: 150
    weight-of-class: 0.33
    technical-debt:
      threshold: 1
      todo-cost: 161
      ignore-cost: 320
      ignore-for-file-cost: 396
      as-dynamic-cost: 322
      deprecated-annotations-cost: 37
      file-nullsafety-migration-cost: 41
      unit-type: "Reais"
  metrics-exclude:
    - test/**
  rules:
    - avoid-unused-parameters
    - avoid-unnecessary-type-assertions
    - avoid-unnecessary-type-casts
    - binary-expression-operand-order
    - double-literal-format
    - no-boolean-literal-compare
    - no-empty-block
    - no-equal-then-else
    - no-object-declaration
    - prefer-first
    - prefer-last
#    - avoid-dynamic
    - avoid-collection-methods-with-unrelated-types
    - prefer-async-await
    - prefer-immediate-return
    - prefer-trailing-comma
    - prefer-match-file-name:
        exclude:
          - test/**
          - lib/main.dart