AllCops:
  NewCops: enable
  TargetRubyVersion: 2.6
  Exclude:
    - "node_modules/**/*"
    - "vendor/**/*"

# Private methods indent.
Layout/IndentationConsistency:
  EnforcedStyle: indented_internal_methods

# Warning: 120 characters
# Error:   160 characters
# Make the library more restrictive.
Layout/LineLength:
  Max: 120

# Multi-line indentation with receiver.
Layout/MultilineMethodCallIndentation:
  EnforcedStyle: indented_relative_to_receiver

Lint/AmbiguousBlockAssociation:
  Exclude:
    - "spec/**/*_spec.rb"

# May define constants within the block in spec.
Lint/ConstantDefinitionInBlock:
  Exclude:
    - "spec/**/*_spec.rb"

Lint/InheritException:
  EnforcedStyle: standard_error

Lint/UnderscorePrefixedVariableName:
  Enabled: false

Lint/UnusedMethodArgument:
  Enabled: false

Metrics/AbcSize:
  Max: 24

Metrics/BlockLength:
  Exclude:
    - "spec/**/*.rb"
    - "Gemfile"
    - "*.gemspec"

Metrics/CyclomaticComplexity:
  Max: 10

Metrics/MethodLength:
  Max: 20

Security/YAMLLoad:
  Enabled: false

Style/Alias:
  EnforcedStyle: prefer_alias_method

Style/AndOr:
  EnforcedStyle: conditionals

Style/AsciiComments:
  Enabled: false

Style/BlockDelimiters:
  Enabled: false

Style/ClassAndModuleChildren:
  Enabled: false

Style/CollectionMethods:
  PreferredMethods:
    detect: "detect"
    find: "detect"
    inject: "inject"
    reduce: "inject"

Style/Documentation:
  Enabled: false

Style/DoubleNegation:
  Enabled: false

Style/EmptyCaseCondition:
  Enabled: false

Style/EmptyElse:
  EnforcedStyle: empty

Style/EmptyMethod:
  EnforcedStyle: expanded

Style/FormatString:
  EnforcedStyle: percent

# Do not use frozen_string_literal comment.
Style/FrozenStringLiteralComment:
  Enabled: false

Style/HashSyntax:
  Exclude:
    - "Rakefile"

Style/MultilineBlockChain:
  Enabled: false

Style/MixinUsage:
  Exclude:
    - "bin/setup"

# Use _ when 7 digits or more.
Style/NumericLiterals:
  MinDigits: 7
  Strict: true

Style/NumericPredicate:
  Enabled: false

Style/OrAssignment:
  Enabled: false

Style/PercentLiteralDelimiters:
  Enabled: false

# `has_xxx?` is more readable.
Style/PreferredHashMethods:
  EnforcedStyle: verbose

# Do not use unnecessary returns. (Allow to return multiple values.)
Style/RedundantReturn:
  AllowMultipleReturnValues: true

# Do not specify error class when rescuing StandardError.
Style/RescueStandardError:
  EnforcedStyle: implicit

# String literals use double quotes.
Style/StringLiterals:
  EnforcedStyle: double_quotes

# String literal inside the string interpolation use double quotes too.
Style/StringLiteralsInInterpolation:
  EnforcedStyle: double_quotes

# Percent(`%i(a b)`) and brackets(`[:a, :b]`) are acceptable.
Style/SymbolArray:
  Enabled: false

# Put a trailing comma in argument list.
Style/TrailingCommaInArguments:
  EnforcedStyleForMultiline: comma

# Put a trailing comma in Array literal.
Style/TrailingCommaInArrayLiteral:
  EnforcedStyleForMultiline: comma

# Put a trailing comma in Hash literal.
Style/TrailingCommaInHashLiteral:
  EnforcedStyleForMultiline: comma

# Percent(`%w(a b)`) and brackets(`["a", "b"]`) are acceptable.
Style/WordArray:
  Enabled: false