--- title: RuboCop 1.89: Project-Wide Analysis with Rubydex | daily.dev description: RuboCop 1.89 introduces project-wide analysis via optional integration with rubydex, a Shopify library that builds a cross-file index of Ruby code. Previously... canonical: https://daily.dev/posts/rubocop-1-89-project-wide-analysis-with-rubydex-fu4gfzxwv twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: RuboCop 1.89: Project-Wide Analysis with Rubydex | daily.dev og:description: RuboCop 1.89 introduces project-wide analysis via optional integration with rubydex, a Shopify library that builds a cross-file index of Ruby code. Previously... og:url: https://daily.dev/posts/rubocop-1-89-project-wide-analysis-with-rubydex-fu4gfzxwv og:image: https://api.daily.dev/og/posts/Fu4gFzxWV.png og:image:alt: RuboCop 1.89: Project-Wide Analysis with Rubydex og:image:width: 1200 og:image:height: 630 og:locale: en --- [Meta Redux](https://daily.dev/sources/metaredux) [Read post](https://api.daily.dev/r/Fu4gFzxWV) # [RuboCop 1.89: Project-Wide Analysis with Rubydex](https://api.daily.dev/r/Fu4gFzxWV "Go to post") RuboCop 1.89 introduces project-wide analysis via optional integration with rubydex, a Shopify library that builds a cross-file index of Ruby code. Previously limited to single-file analysis, RuboCop can now detect typos in constant/method names across files (Lint/NameTypo), flag deprecated API usage project-wide (Lint/DeprecatedReference), find unused private methods (Lint/UnusedPrivateMethod), and catch duplicate methods or constant reassignments across different files. Existing cops like Lint/MissingSuper and Lint/ConstantResolution also become significantly less noisy with full ancestry resolution. Rubydex is opt-in, requiring two config changes, and falls back gracefully if not installed. A new option to index gem sources raises ancestry resolution from \~20% to \~97% of classes. [#ruby](/tags/ruby "Check all #ruby posts") Aug 05•8m read time•From [metaredux.com](https://api.daily.dev/r/Fu4gFzxWV "metaredux.com") [](https://api.daily.dev/r/Fu4gFzxWV "Go to post") Table of contents [The single-file curse (limitation)](https://api.daily.dev/r/Fu4gFzxWV?a=the-single-file-curse-limitation "The single-file curse (limitation)")[Enter rubydex](https://api.daily.dev/r/Fu4gFzxWV?a=enter-rubydex "Enter rubydex")[What the index unlocks in 1.89](https://api.daily.dev/r/Fu4gFzxWV?a=what-the-index-unlocks-in-189 "What the index unlocks in 1.89")[Still early days](https://api.daily.dev/r/Fu4gFzxWV?a=still-early-days "Still early days") 425 Impressions Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/metaredux) [Meta Redux](https://daily.dev/sources/metaredux "https://daily.dev/sources/metaredux") MetaRedux provides tutorials, guides, and resources for learning and mastering Redux, a state manage... 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