Worked on the Shopify/ruby-lsp repository to enhance the stability and reliability of the constant alias resolution subsystem in Ruby. Focused on addressing a bug where self-referential constant aliases could cause infinite recursion and StackLevelError, the developer introduced a mechanism to track seen names and prevent circular references during resolution. This solution was implemented through careful code analysis and targeted bug fixing, using Ruby as the primary language and emphasizing robust testing practices. Expanded and refactored test coverage ensured that self-referential scenarios were thoroughly validated, resulting in improved maintainability and code quality for the constant resolution logic.