.swiftlint_base.yml

###########################################################
# Rules to enable/disable
###########################################################

# To activate only one rule at a time (e.g. when you want to focus on fixing one specific rule)
# You can use `whitelist_rules` to list only the rules you want. When you do that, you need to
# comment opt_in_rules and disabled_rules
#
# whitelist_rules:
#  - force_unwrapping



###########################################################
# In code, use these commands if needed                   #
###########################################################
# To temporary disable a rule                             #
#                                                         #
# // swiftlint:disable <rule_identifier>                  #
# then                                                    #
# // swiftlint:enable <rule_identifier>                   #
###########################################################
# To temporary disable all rules                          #
#                                                         #
# // swiftlint:disable all                                #
# then                                                    #
# // swiftlint:enable all                                 #
###########################################################
# To disable a rule on a single line                      #
#                                                         #
# // swiftlint:disable:next <rule_identifier>             #
###########################################################

# Run (with care) `swiftlint autocorrect` to automatically correct files with compatible rules


###########################################################
# Rules that are disabled by default but we want to include
###########################################################

opt_in_rules:
  - anyobject_protocol # Prefer using AnyObject over class for class-only protocols.
  - array_init # Prefer using Array(seq) over seq.map { $0 } to convert a sequence into an Array.
  - closure_body_length # Closure bodies should not span too many lines.
  - closure_end_indentation # Closure end should have the same indentation as the line that started it.
  - closure_spacing # Closure expressions should have a single space inside each brace.
  - contains_over_filter_count # Prefer contains over comparing filter(where:).count to 0.
  - contains_over_filter_is_empty # Prefer contains over using filter(where:).isEmpty
  - contains_over_first_not_nil # Prefer contains over first(where:) != nil and firstIndex(where:) != nil
  - contains_over_range_nil_comparison # Prefer contains over range(of:) != nil and range(of:) == nil
  - convenience_type # Types used for hosting only static members should be implemented as a caseless enum to avoid instantiation.
  - discouraged_object_literal # Prefer initializers over object literals.
  - discouraged_optional_boolean # Prefer non-optional booleans over optional booleans.
  - discouraged_optional_collection # Prefer empty collection over optional collection.
  - empty_collection_literal # Prefer checking isEmpty over comparing collection to an empty array or dictionary literal.
  - empty_count # Prefer checking isEmpty over comparing count to zero.
  - empty_string # Prefer checking isEmpty over comparing string to an empty string literal.
  - empty_xctest_method # Empty XCTest method should be avoided.
  - enum_case_associated_values_count # Number of associated values in an enum case should be low
  - expiring_todo # TODOs and FIXMEs should be resolved prior to their expiry date.
  - explicit_init # Explicitly calling .init() should be avoided.
  - fallthrough # Fallthrough should be avoided.
  - fatal_error_message # A fatalError call should have a message.
  - file_name_no_space # File name should not contain any whitespace.
  - first_where # Prefer using .first(where:) over .filter { }.first in collections.
  - flatmap_over_map_reduce # Prefer flatMap over map followed by reduce([], +).
  - identical_operands # Comparing two identical operands is likely a mistake.
  - implicit_return # Prefer implicit returns in closures, functions and getters.
  - joined_default_parameter # Discouraged explicit usage of the default separator.
  - last_where # Prefer using .last(where:) over .filter { }.last in collections.
  - legacy_multiple # Prefer using the isMultiple(of:) function instead of using the remainder operator (%).
  - legacy_random # Prefer using type.random(in:) over legacy functions.
  - literal_expression_end_indentation # Array and dictionary literal end should have the same indentation as the line that started it.
  - lower_acl_than_parent # Ensure definitions have a lower access control level than their enclosing parent
  - modifier_order # Modifier order should be consistent.
  - multiline_arguments # Arguments should be either on the same line, or one per line.
  - multiline_function_chains # Chained function calls should be either on the same line, or one per line.
  - multiline_parameters # Functions and methods parameters should be either on the same line, or one per line.
  - nimble_operator # Prefer Nimble operator overloads over free matcher functions.
  - nslocalizedstring_key # Static strings should be used as key in NSLocalizedString in order to genstrings work.
  - number_separator # Underscores should be used as thousand separator in large decimal numbers.
  - operator_usage_whitespace # Operators should be surrounded by a single whitespace when they are being used.
  - optional_enum_case_matching # Matching an enum case against an optional enum without ‘?’ is supported on Swift 5.1 and above.
  - overridden_super_call # Some overridden methods should always call super
  - override_in_extension # Extensions shouldn’t override declarations.
  - pattern_matching_keywords # Combine multiple pattern matching bindings by moving keywords out of tuples.
  - prefer_self_type_over_type_of_self # Prefer Self over type(of: self) when accessing properties or calling methods.
  - private_action # IBActions should be private.
  - private_outlet # IBOutlets should be private to avoid leaking UIKit to higher layers.
  - prohibited_interface_builder # Creating views using Interface Builder should be avoided.
  - prohibited_super_call # Some methods should not call super
  - quick_discouraged_call # Discouraged call inside ‘describe’ and/or ‘context’ block.
  - quick_discouraged_focused_test # Discouraged focused test. Other tests won’t run while this one is focused.
  - quick_discouraged_pending_test # Discouraged pending test. This test won’t run while it’s marked as pending.
  - reduce_into # Prefer reduce(into:_:) over reduce(_:_:) for copy-on-write types
  - redundant_nil_coalescing # nil coalescing operator is only evaluated if the lhs is nil, coalescing operator with nil as rhs is redundant
  - redundant_type_annotation # Variables should not have redundant type annotation
  - required_enum_case # Enums conforming to a specified protocol must implement a specific case(s).
  - single_test_class # Test files should contain a single QuickSpec or XCTestCase class.
  - sorted_first_last # Prefer using min() or max() over sorted().first or sorted().last
  - static_operator # Operators should be declared as static functions, not free functions.
  - strict_fileprivate # fileprivate should be avoided.
  - strong_iboutlet # @IBOutlets shouldn’t be declared as weak.
  - toggle_bool # Prefer someBool.toggle() over someBool = !someBool.
  - trailing_closure # Trailing closure syntax should be used whenever possible.
  - unneeded_parentheses_in_closure_argument # Parentheses are not needed when declaring closure arguments.
  - untyped_error_in_catch # Catch statements should not declare error variables without type casting.
  - unused_declaration # Declarations should be referenced at least once within all files linted.
  - unused_import # All imported modules should be required to make the file compile.
  - vertical_parameter_alignment_on_call # Function parameters should be aligned vertically if they’re in multiple lines in a method call.
  - vertical_whitespace_closing_braces # Don’t include vertical whitespace (empty line) before closing braces.
  - vertical_whitespace_opening_braces # Don’t include vertical whitespace (empty line) after opening braces.
  - xct_specific_matcher # Prefer specific XCTest matchers over XCTAssertEqual and XCTAssertNotEqual
  - yoda_condition # The variable should be placed on the left, the constant on the right of a comparison operator.

###########################################################
# Rules that are enabled by default but we want to exclude
###########################################################

disabled_rules:
  - force_cast # Force casts should be avoided.
  - function_parameter_count # Number of function parameters should be low.
  - force_try # Force tries should be avoided.
  - line_length # Lines should not span too many characters.
  - notification_center_detachment # An object should only remove itself as an observer in deinit.
  - no_extension_access_modifier # Prefer not to use extension access modifiers
  - todo

###########################################################
# Rules customization
###########################################################

closure_body_length:
  warning: 30

cyclomatic_complexity:
  warning: 20

file_length:
  warning: 600

function_body_length:
  warning: 50

identifier_name:
  excluded:
   - x
   - y
   - id
   - _
   - on
   - off
  max_length:
    warning: 45
    error: 60
  min_length:
    warning: 1

nesting:
  type_level: 2

###########################################################
# Custom rules
###########################################################

custom_rules:
  swiftgen_assets:
    name: "SwiftGen Assets"
    regex: '(UIImage|UIColor)(\.init)?\(named: ?"?.+"?(, ?in:.+?, ?compatibleWith:.+?)?\)|#imageLiteral\(resourceName: ?".+"\)'
    message: "Use Asset.<asset> instead"
    severity: warning # OnceFixed: error
  swiftgen_colors:
    name: "SwiftGen Colors"
    regex: '(UIColor(\.init)?|#colorLiteral)\(((red|displayP3Red):.+?,green:.+?,blue:.+?,alpha:.+?)|(white:.+?,alpha:.+?)|(hue:.+?,saturation:.+?,brightness:.+?,alpha:.+?)\)'
    message: "Use ColorName.<color> instead"
    severity: warning # OnceFixed: error
  swiftgen_storyboards:
    name: "SwiftGen Storyboards"
    regex: '(UIStoryboard\(name: ?"?.+"?, ?bundle:.+\))|(instantiateViewController\(withIdentifier:.+?\))|(instantiateInitialViewController\(\))'
    message: "Use StoryboardScene.<storyboad>.<scene>.instantiate() instead"
    severity: error
  swiftgen_strings:
    name: "SwiftGen Strings"
    regex: 'NSLocalizedString'
    message: "Use L10n.key instead"
    severity: warning # OnceFixed: error
#  todo_gitlab_issue:
#      name: "TODO on Gitlab"
#      regex: "(TODO).(?!.*(code.musicworldmedia.com&)).(?!.*issues)"
#      match_kinds: comment
#      message: "TODOs should link to an open issue on Gitlab"
#      severity: warning # OnceFixed: error

###########################################################
# Paths to lint
###########################################################

# paths to include during linting. `--path` is ignored if present.
included:
  - 

# paths to ignore during linting. Takes precedence over `included`.
excluded:
  - 

###########################################################
# All rules
###########################################################

# See https://realm.github.io/SwiftLint/rule-directory.html or execute `swiftlint rules`

#  - anyobject_protocol # Prefer using AnyObject over class for class-only protocols.
#  - array_init # Prefer using Array(seq) over seq.map { $0 } to convert a sequence into an Array.
#  - attributes # Attributes should be on their own lines in functions and types, but on the same line as variables and imports.
#  - block_based_kvo # Prefer the new block based KVO API with keypaths when using Swift 3.2 or later.
#  - class_delegate_protocol # Delegate protocols should be class-only so they can be weakly referenced.
#  - closing_brace # Closing brace with closing parenthesis should not have any whitespaces in the middle.
#  - closure_body_length # Closure bodies should not span too many lines.
#  - closure_end_indentation # Closure end should have the same indentation as the line that started it.
#  - closure_parameter_position # Closure parameters should be on the same line as opening brace.
#  - closure_spacing # Closure expressions should have a single space inside each brace.
#  - collection_alignment # All elements in a collection literal should be vertically aligned
#  - colon # Colons should be next to the identifier when specifying a type and next to the key in dictionary literals.
#  - comma # There should be no space before and one after any comma.
#  - compiler_protocol_init # The initializers declared in compiler protocols such as ExpressibleByArrayLiteral shouldn’t be called directly.
#  - conditional_returns_on_newline # Conditional statements should always return on the next line
#  - contains_over_filter_count # Prefer contains over comparing filter(where:).count to 0.
#  - contains_over_filter_is_empty # Prefer contains over using filter(where:).isEmpty
#  - contains_over_first_not_nil # Prefer contains over first(where:) != nil and firstIndex(where:) != nil
#  - contains_over_range_nil_comparison # Prefer contains over range(of:) != nil and range(of:) == nil
#  - control_statement # if, for, guard, switch, while, and catch statements shouldn’t unnecessarily wrap their conditionals or arguments in parentheses.
#  - convenience_type # Types used for hosting only static members should be implemented as a caseless enum to avoid instantiation.
#  - cyclomatic_complexity # Complexity of function bodies should be limited.
#  - deployment_target # Availability checks or attributes shouldn’t be using older versions that are satisfied by the deployment target.
#  - discarded_notification_center_observer # When registering for a notification using a block, the opaque observer that is returned should be stored so it can be removed later.
#  - discouraged_direct_init # Discouraged direct initialization of types that can be harmful.
#  - discouraged_object_literal # Prefer initializers over object literals.
#  - discouraged_optional_boolean # Prefer non-optional booleans over optional booleans.
#  - discouraged_optional_collection # Prefer empty collection over optional collection.
#  - duplicate_enum_cases # Enum can’t contain multiple cases with the same name.
#  - duplicate_imports # Imports should be unique.
#  - dynamic_inline # Avoid using ‘dynamic’ and ‘@inline(__always)’ together.
#  - empty_collection_literal # Prefer checking isEmpty over comparing collection to an empty array or dictionary literal.
#  - empty_count # Prefer checking isEmpty over comparing count to zero.
#  - empty_enum_arguments # Arguments can be omitted when matching enums with associated types if they are not used.
#  - empty_parameters # Prefer () -> over Void ->.
#  - empty_parentheses_with_trailing_closure # When using trailing closures, empty parentheses should be avoided after the method call.
#  - empty_string # Prefer checking isEmpty over comparing string to an empty string literal.
#  - empty_xctest_method # Empty XCTest method should be avoided.
#  - enum_case_associated_values_count # Number of associated values in an enum case should be low
#  - expiring_todo # TODOs and FIXMEs should be resolved prior to their expiry date.
#  - explicit_acl # All declarations should specify Access Control Level keywords explicitly.
#  - explicit_enum_raw_value # Enums should be explicitly assigned their raw values.
#  - explicit_init # Explicitly calling .init() should be avoided.
#  - explicit_self # Instance variables and functions should be explicitly accessed with ‘self.’.
#  - explicit_top_level_acl # Top-level declarations should specify Access Control Level keywords explicitly.
#  - explicit_type_interface # Properties should have a type interface
#  - extension_access_modifier # Prefer to use extension access modifiers
#  - fallthrough # Fallthrough should be avoided.
#  - fatal_error_message # A fatalError call should have a message.
#  - file_header # Header comments should be consistent with project patterns. The SWIFTLINT_CURRENT_FILENAME placeholder can optionally be used in the required and forbidden patterns. It will be replaced by the real file name.
#  - file_length # Files should not span too many lines.
#  - file_name # File name should match a type or extension declared in the file (if any).
#  - file_name_no_space # File name should not contain any whitespace.
#  - file_types_order # Specifies how the types within a file should be ordered.
#  - first_where # Prefer using .first(where:) over .filter { }.first in collections.
#  - flatmap_over_map_reduce # Prefer flatMap over map followed by reduce([], +).
#  - for_where # where clauses are preferred over a single if inside a for.
#  - force_cast # Force casts should be avoided.
#  - force_try # Force tries should be avoided.
#  - force_unwrapping # Force unwrapping should be avoided.
#  - function_body_length # Functions bodies should not span too many lines.
#  - function_default_parameter_at_end # Prefer to locate parameters with defaults toward the end of the parameter list.
#  - function_parameter_count # Number of function parameters should be low.
#  - generic_type_name # Generic type name should only contain alphanumeric characters, start with an uppercase character and span between 1 and 20 characters in length.
#  - identical_operands # Comparing two identical operands is likely a mistake.
#  - identifier_name # Identifier names should only contain alphanumeric characters and start with a lowercase character or should only contain capital letters. In an exception to the above, variable names may start with a capital letter when they are declared static and immutable. Variable names should not be too long or too short.
#  - implicit_getter # Computed read-only properties and subscripts should avoid using the get keyword.
#  - implicit_return # Prefer implicit returns in closures, functions and getters.
#  - implicitly_unwrapped_optional # Implicitly unwrapped optionals should be avoided when possible.
#  - indentation_width # Indent code using either one tab or the configured amount of spaces, unindent to match previous indentations. Don’t indent the first line.
#  - inert_defer # If defer is at the end of its parent scope, it will be executed right where it is anyway.
#  - is_disjoint # Prefer using Set.isDisjoint(with:) over Set.intersection(_:).isEmpty.
#  - joined_default_parameter # Discouraged explicit usage of the default separator.
#  - large_tuple # Tuples shouldn’t have too many members. Create a custom type instead.
#  - last_where # Prefer using .last(where:) over .filter { }.last in collections.
#  - leading_whitespace # Files should not contain leading whitespace.
#  - legacy_cggeometry_functions # Struct extension properties and methods are preferred over legacy functions
#  - legacy_constant # Struct-scoped constants are preferred over legacy global constants.
#  - legacy_constructor # Swift constructors are preferred over legacy convenience functions.
#  - legacy_hashing # Prefer using the hash(into:) function instead of overriding hashValue
#  - legacy_multiple # Prefer using the isMultiple(of:) function instead of using the remainder operator (%).
#  - legacy_nsgeometry_functions # Struct extension properties and methods are preferred over legacy functions
#  - legacy_random # Prefer using type.random(in:) over legacy functions.
#  - let_var_whitespace # Let and var should be separated from other statements by a blank line.
#  - line_length # Lines should not span too many characters.
#  - literal_expression_end_indentation # Array and dictionary literal end should have the same indentation as the line that started it.
#  - lower_acl_than_parent # Ensure definitions have a lower access control level than their enclosing parent
#  - mark # MARK comment should be in valid format. e.g. ‘// MARK: …’ or ‘// MARK: - …’
#  - missing_docs # Declarations should be documented.
#  - modifier_order # Modifier order should be consistent.
#  - multiline_arguments # Arguments should be either on the same line, or one per line.
#  - multiline_arguments_brackets # Multiline arguments should have their surrounding brackets in a new line.
#  - multiline_function_chains # Chained function calls should be either on the same line, or one per line.
#  - multiline_literal_brackets # Multiline literals should have their surrounding brackets in a new line.
#  - multiline_parameters # Functions and methods parameters should be either on the same line, or one per line.
#  - multiline_parameters_brackets # Multiline parameters should have their surrounding brackets in a new line.
#  - multiple_closures_with_trailing_closure # Trailing closure syntax should not be used when passing more than one closure argument.
#  - nesting # Types should be nested at most 1 level deep, and statements should be nested at most 5 levels deep.
#  - nimble_operator # Prefer Nimble operator overloads over free matcher functions.
#  - no_extension_access_modifier # Prefer not to use extension access modifiers
#  - no_fallthrough_only # Fallthroughs can only be used if the case contains at least one other statement.
#  - no_grouping_extension # Extensions shouldn’t be used to group code within the same source file.
#  - no_space_in_method_call # Don’t add a space between the method name and the parentheses.
#  - notification_center_detachment # An object should only remove itself as an observer in deinit.
#  - nslocalizedstring_key # Static strings should be used as key in NSLocalizedString in order to genstrings work.
#  - nslocalizedstring_require_bundle # Calls to NSLocalizedString should specify the bundle which contains the strings file.
#  - nsobject_prefer_isequal # NSObject subclasses should implement isEqual instead of ==.
#  - number_separator # Underscores should be used as thousand separator in large decimal numbers.
#  - object_literal # Prefer object literals over image and color inits.
#  - opening_brace # Opening braces should be preceded by a single space and on the same line as the declaration.
#  - operator_usage_whitespace # Operators should be surrounded by a single whitespace when they are being used.
#  - operator_whitespace # Operators should be surrounded by a single whitespace when defining them.
#  - optional_enum_case_matching # Matching an enum case against an optional enum without ‘?’ is supported on Swift 5.1 and above.
#  - orphaned_doc_comment # A doc comment should be attached to a declaration.
#  - overridden_super_call # Some overridden methods should always call super
#  - override_in_extension # Extensions shouldn’t override declarations.
#  - pattern_matching_keywords # Combine multiple pattern matching bindings by moving keywords out of tuples.
#  - prefer_self_type_over_type_of_self # Prefer Self over type(of: self) when accessing properties or calling methods.
#  - prefixed_toplevel_constant # Top-level constants should be prefixed by k.
#  - private_action # IBActions should be private.
#  - private_outlet # IBOutlets should be private to avoid leaking UIKit to higher layers.
#  - private_over_fileprivate # Prefer private over fileprivate declarations.
#  - private_unit_test # Unit tests marked private are silently skipped.
#  - prohibited_interface_builder # Creating views using Interface Builder should be avoided.
#  - prohibited_super_call # Some methods should not call super
#  - protocol_property_accessors_order # When declaring properties in protocols, the order of accessors should be get set.
#  - quick_discouraged_call # Discouraged call inside ‘describe’ and/or ‘context’ block.
#  - quick_discouraged_focused_test # Discouraged focused test. Other tests won’t run while this one is focused.
#  - quick_discouraged_pending_test # Discouraged pending test. This test won’t run while it’s marked as pending.
#  - raw_value_for_camel_cased_codable_enum # Camel cased cases of Codable String enums should have raw value.
#  - reduce_boolean # Prefer using .allSatisfy() or .contains() over reduce(true) or reduce(false)
#  - reduce_into # Prefer reduce(into:_:) over reduce(_:_:) for copy-on-write types
#  - redundant_discardable_let # Prefer _ = foo() over let _ = foo() when discarding a result from a function.
#  - redundant_nil_coalescing # nil coalescing operator is only evaluated if the lhs is nil, coalescing operator with nil as rhs is redundant
#  - redundant_objc_attribute # Objective-C attribute (@objc) is redundant in declaration.
#  - redundant_optional_initialization # Initializing an optional variable with nil is redundant.
#  - redundant_set_access_control # Property setter access level shouldn’t be explicit if it’s the same as the variable access level.
#  - redundant_string_enum_value # String enum values can be omitted when they are equal to the enumcase name.
#  - redundant_type_annotation # Variables should not have redundant type annotation
#  - redundant_void_return # Returning Void in a function declaration is redundant.
#  - required_deinit # Classes should have an explicit deinit method.
#  - required_enum_case # Enums conforming to a specified protocol must implement a specific case(s).
#  - return_arrow_whitespace # Return arrow and return type should be separated by a single space or on a separate line.
#  - shorthand_operator # Prefer shorthand operators (+=, -=, *=, /=) over doing the operation and assigning.
#  - single_test_class # Test files should contain a single QuickSpec or XCTestCase class.
#  - sorted_first_last # Prefer using min() or max() over sorted().first or sorted().last
#  - sorted_imports # Imports should be sorted.
#  - statement_position # Else and catch should be on the same line, one space after the previous declaration.
#  - static_operator # Operators should be declared as static functions, not free functions.
#  - strict_fileprivate # fileprivate should be avoided.
#  - strong_iboutlet # @IBOutlets shouldn’t be declared as weak.
#  - superfluous_disable_command # SwiftLint ‘disable’ commands are superfluous when the disabled rule would not have triggered a violation in the disabled region. Use “ - ” if you wish to document a command.
#  - switch_case_alignment # Case statements should vertically align with their enclosing switch statement, or indented if configured otherwise.
#  - switch_case_on_newline # Cases inside a switch should always be on a newline
#  - syntactic_sugar # Shorthand syntactic sugar should be used, i.e. [Int] instead of Array.
#  - todo # TODOs and FIXMEs should be resolved.
#  - toggle_bool # Prefer someBool.toggle() over someBool = !someBool.
#  - trailing_closure # Trailing closure syntax should be used whenever possible.
#  - trailing_comma # Trailing commas in arrays and dictionaries should be avoided/enforced.
#  - trailing_newline # Files should have a single trailing newline.
#  - trailing_semicolon # Lines should not have trailing semicolons.
#  - trailing_whitespace # Lines should not have trailing whitespace.
#  - type_body_length # Type bodies should not span too many lines.
#  - type_contents_order # Specifies the order of subtypes, properties, methods & more within a type.
#  - type_name # Type name should only contain alphanumeric characters, start with an uppercase character and span between 3 and 40 characters in length.
#  - unavailable_function # Unimplemented functions should be marked as unavailable.
#  - unneeded_break_in_switch # Avoid using unneeded break statements.
#  - unneeded_parentheses_in_closure_argument # Parentheses are not needed when declaring closure arguments.
#  - unowned_variable_capture # Prefer capturing references as weak to avoid potential crashes.
#  - untyped_error_in_catch # Catch statements should not declare error variables without type casting.
#  - unused_capture_list # Unused reference in a capture list should be removed.
#  - unused_closure_parameter # Unused parameter in a closure should be replaced with _.
#  - unused_control_flow_label # Unused control flow label should be removed.
#  - unused_declaration # Declarations should be referenced at least once within all files linted.
#  - unused_enumerated # When the index or the item is not used, .enumerated() can be removed.
#  - unused_import # All imported modules should be required to make the file compile.
#  - unused_optional_binding # Prefer != nil over let _ =
#  - unused_setter_value # Setter value is not used.
#  - valid_ibinspectable # @IBInspectable should be applied to variables only, have its type explicit and be of a supported type
#  - vertical_parameter_alignment # Function parameters should be aligned vertically if they’re in multiple lines in a declaration.
#  - vertical_parameter_alignment_on_call # Function parameters should be aligned vertically if they’re in multiple lines in a method call.
#  - vertical_whitespace # Limit vertical whitespace to a single empty line.
#  - vertical_whitespace_between_cases # Include a single empty line between switch cases.
#  - vertical_whitespace_closing_braces # Don’t include vertical whitespace (empty line) before closing braces.
#  - vertical_whitespace_opening_braces # Don’t include vertical whitespace (empty line) after opening braces.
#  - void_return # Prefer -> Void over -> ().
#  - weak_delegate # Delegates should be weak to avoid reference cycles.
#  - xct_specific_matcher # Prefer specific XCTest matchers over XCTAssertEqual and XCTAssertNotEqual
#  - xctfail_message # An XCTFail call should include a description of the assertion.
#  - yoda_condition # The variable should be placed on the left, the constant on the right of a comparison operator.