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.rubocop.yml
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.rubocop.yml
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# Can be removed once all rules are addressed or moved to this file as documented overrides
inherit_from: .rubocop_todo.yml
# Used for merging with exclude lists with .rubocop_todo.yml
inherit_mode:
merge:
- Exclude
require:
- rubocop-rails
- rubocop-rspec
- rubocop-performance
- rubocop-capybara
- ./lib/linter/rubocop_middle_dot
AllCops:
TargetRubyVersion: 3.0 # Set to minimum supported version of CI
DisplayCopNames: true
DisplayStyleGuide: true
ExtraDetails: true
UseCache: true
CacheRootDirectory: tmp
NewCops: enable # Opt-in to newly added rules
Exclude:
- db/schema.rb
- 'bin/*'
- 'node_modules/**/*'
- 'Vagrantfile'
- 'vendor/**/*'
- 'config/initializers/json_ld*' # Generated files
- 'lib/mastodon/migration_helpers.rb' # Vendored from GitLab
- 'lib/templates/**/*'
# Reason: Prefer Hashes without extreme indentation
# https://docs.rubocop.org/rubocop/cops_layout.html#layoutfirsthashelementindentation
Layout/FirstHashElementIndentation:
EnforcedStyle: consistent
# Reason: Currently disabled in .rubocop_todo.yml
# https://docs.rubocop.org/rubocop/cops_layout.html#layoutlinelength
Layout/LineLength:
Max: 300 # Default of 120 causes a duplicate entry in generated todo file
## Disable most Metrics/*Length cops
# Reason: those are often triggered and force significant refactors when this happend
# but the team feel they are not really improving the code quality.
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricsblocklength
Metrics/BlockLength:
Enabled: false
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricsclasslength
Metrics/ClassLength:
Enabled: false
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricsmethodlength
Metrics/MethodLength:
Enabled: false
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricsmodulelength
Metrics/ModuleLength:
Enabled: false
## End Disable Metrics/*Length cops
# Reason: Currently disabled in .rubocop_todo.yml
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricsabcsize
Metrics/AbcSize:
Exclude:
- 'lib/mastodon/cli/*.rb'
# Reason: Currently disabled in .rubocop_todo.yml
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricscyclomaticcomplexity
Metrics/CyclomaticComplexity:
Exclude:
- lib/mastodon/cli/*.rb
# Reason:
# https://docs.rubocop.org/rubocop/cops_metrics.html#metricsparameterlists
Metrics/ParameterLists:
CountKeywordArgs: false
# Reason: Prevailing style is argument file paths
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsfilepath
Rails/FilePath:
EnforcedStyle: arguments
# Reason: Prevailing style uses numeric status codes, matches RSpec/Rails/HttpStatus
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railshttpstatus
Rails/HttpStatus:
EnforcedStyle: numeric
# Reason: Conflicts with `Lint/UselessMethodDefinition` for inherited controller actions
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railslexicallyscopedactionfilter
Rails/LexicallyScopedActionFilter:
Exclude:
- 'app/controllers/auth/*'
# Reason: These tasks are doing local work which do not need full env loaded
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsrakeenvironment
Rails/RakeEnvironment:
Exclude:
- 'lib/tasks/auto_annotate_models.rake'
- 'lib/tasks/emojis.rake'
- 'lib/tasks/mastodon.rake'
- 'lib/tasks/repo.rake'
- 'lib/tasks/statistics.rake'
# Reason: There are appropriate times to use these features
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsskipsmodelvalidations
Rails/SkipsModelValidations:
Enabled: false
# Reason: We want to preserve the ability to migrate from arbitrary old versions,
# and cannot guarantee that every installation has run every migration as they upgrade.
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsunusedignoredcolumns
Rails/UnusedIgnoredColumns:
Enabled: false
# Reason: Prevailing style choice
# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsnegateinclude
Rails/NegateInclude:
Enabled: false
# Reason: Enforce default limit, but allow some elements to span lines
# https://docs.rubocop.org/rubocop-rspec/cops_rspec.html#rspecexamplelength
RSpec/ExampleLength:
CountAsOne: ['array', 'heredoc', 'method_call']
# Reason: Deprecated cop, will be removed in 3.0, replaced by SpecFilePathFormat
# https://docs.rubocop.org/rubocop-rspec/cops_rspec.html#rspecfilepath
RSpec/FilePath:
Enabled: false
# Reason:
# https://docs.rubocop.org/rubocop-rspec/cops_rspec.html#rspecnamedsubject
RSpec/NamedSubject:
EnforcedStyle: named_only
# Reason: Prevailing style choice
# https://docs.rubocop.org/rubocop-rspec/cops_rspec.html#rspecnottonot
RSpec/NotToNot:
EnforcedStyle: to_not
# Reason: Match overrides from Rspec/FilePath rule above
# https://docs.rubocop.org/rubocop-rspec/cops_rspec.html#rspecspecfilepathformat
RSpec/SpecFilePathFormat:
CustomTransform:
ActivityPub: activitypub
DeepL: deepl
FetchOEmbedService: fetch_oembed_service
OEmbedController: oembed_controller
OStatus: ostatus
# Reason: Prevailing style uses numeric status codes, matches Rails/HttpStatus
# https://docs.rubocop.org/rubocop-rspec/cops_rspec_rails.html#rspecrailshttpstatus
RSpecRails/HttpStatus:
EnforcedStyle: numeric
# Reason:
# https://docs.rubocop.org/rubocop/cops_style.html#styleclassandmodulechildren
Style/ClassAndModuleChildren:
Enabled: false
# Reason: Classes mostly self-document with their names
# https://docs.rubocop.org/rubocop/cops_style.html#styledocumentation
Style/Documentation:
Enabled: false
# Reason: Route redirects are not token-formatted and must be skipped
# https://docs.rubocop.org/rubocop/cops_style.html#styleformatstringtoken
Style/FormatStringToken:
inherit_mode:
merge:
- AllowedMethods # The rubocop-rails config adds `redirect`
AllowedMethods:
- redirect_with_vary
# Reason: Enforce modern Ruby style
# https://docs.rubocop.org/rubocop/cops_style.html#stylehashsyntax
Style/HashSyntax:
EnforcedStyle: ruby19_no_mixed_keys
# Reason:
# https://docs.rubocop.org/rubocop/cops_style.html#stylenumericliterals
Style/NumericLiterals:
AllowedPatterns:
- \d{4}_\d{2}_\d{2}_\d{6} # For DB migration date version number readability
# Reason:
# https://docs.rubocop.org/rubocop/cops_style.html#stylepercentliteraldelimiters
Style/PercentLiteralDelimiters:
PreferredDelimiters:
'%i': '()'
'%w': '()'
# Reason: Prefer less indentation in conditional assignments
# https://docs.rubocop.org/rubocop/cops_style.html#styleredundantbegin
Style/RedundantBegin:
Enabled: false
# Reason: Overridden to reduce implicit StandardError rescues
# https://docs.rubocop.org/rubocop/cops_style.html#stylerescuestandarderror
Style/RescueStandardError:
EnforcedStyle: implicit
# Reason: Originally disabled for CodeClimate, and no config consensus has been found
# https://docs.rubocop.org/rubocop/cops_style.html#stylesymbolarray
Style/SymbolArray:
Enabled: false
# Reason:
# https://docs.rubocop.org/rubocop/cops_style.html#styletrailingcommainarrayliteral
Style/TrailingCommaInArrayLiteral:
EnforcedStyleForMultiline: 'comma'
# Reason:
# https://docs.rubocop.org/rubocop/cops_style.html#styletrailingcommainhashliteral
Style/TrailingCommaInHashLiteral:
EnforcedStyleForMultiline: 'comma'
Style/MiddleDot:
Enabled: true