3.1.0

Release note

Signature updates

• Module#attr_* methods (#1300)
• Object#define_singleton_method (#1299)
• String#scan (#1297)
• Removed Gem.datadir (#1273)

Language updates

Library changes

• Use fenced code block instead of indented one in .rbs files (#1312)
• Fix single use clause :type_name location (#1307)
• Fix InvalidOverloadMethodError on overloading extended method (#1294)
• Fix super class of NoTypeFoundError from BaseError to DefinitionError (#1290)
• Support #detailed_message for NonregularTypeAliasError, CyclicTypeParameterBound, InconsistentClassModuleAliasError and CyclicClassAliasDefinitionError (#1289)
• Implement rbs subtract command (#1287)
• Support #detailed_message for InvalidVarianceAnnotationError, RecursiveAliasDefinitionError, MixinClassError and RecursiveTypeAliasError (#1285)
• Support #detailed_message for NoTypeError, InheritModuleError, NoSelfTypeFoundError and NoMixinFoundError (#1280)
• Validate duplicate type aliases (#1279)
• Add -e, --type, and --method-type options to rbs parse (#1252)

rbs prototype

• Convert include in class << self to extend by prototype rb (#1255)

rbs collection

• Skip loading #gemspec gems via RBS collection (#1319)

Miscellaneous

• Run bundle install automatically in bin/steep (#1308)
• Fix warnings (#1314)