Explore the development of scip-ruby, an open-source indexer for browsing Ruby code online with IDE-like functionality, in this 24-minute conference talk from RubyConf 2022. Discover how the tool was built on top of Sorbet, a Ruby typechecker, to enhance Ruby support in Sourcegraph, a code intelligence platform. Learn about the comparison between scip-ruby and other IDEs and online code navigation tools, while delving into key concepts such as layering code into a functional core and an imperative shell for improved testing and development of developer tools.