--- 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 --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # RuboCop 1.89: Project-Wide Analysis with Rubydex **[Meta Redux](https://daily.dev/sources/metaredux)** · 8 min read · 0 upvotes · 0 comments ## Summary 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. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [One engine, many tools — Introducing Rubydex](https://daily.dev/posts/one-engine-many-tools-introducing-rubydex-yrem9ghea) · RUBYLAND · 0 upvotes · 0 comments - [Issue \#812: RuboCop goes project-wide with Rubydex — Ruby Weekly](https://daily.dev/posts/issue-812-rubocop-goes-project-wide-with-rubydex-ruby-weekly-hpeftuyzb) · Ruby Weekly · 1 upvotes · 0 comments - [RuboCop 1.91: The Journey to 2.0 Begins](https://daily.dev/posts/rubocop-1-91-the-journey-to-2-0-begins-riimynmiu) · Meta Redux · 4 upvotes · 0 comments - [Writing custom RuboCop rules in 2026—Martian Chronicles, Evil Martians’ team blog](https://daily.dev/posts/writing-custom-rubocop-rules-in-2026-martian-chronicles-evil-martians-team-blog-ucy58o2jj) · Martian Chronicles · 0 upvotes · 0 comments - [Ruby Weekly Issue 800: May 14, 2026](https://daily.dev/posts/ruby-weekly-issue-800-may-14-2026-cpjvowneo) · Ruby Weekly · 0 upvotes · 0 comments --- Tags: [#ruby](https://daily.dev/tags/ruby) [View this post on daily.dev](https://daily.dev/posts/rubocop-1-89-project-wide-analysis-with-rubydex-fu4gfzxwv) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"RuboCop 1.89: Project-Wide Analysis with Rubydex","url":"https://daily.dev/posts/rubocop-1-89-project-wide-analysis-with-rubydex-fu4gfzxwv","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/rubocop-1-89-project-wide-analysis-with-rubydex-fu4gfzxwv"},"datePublished":"2026-08-05T17:14:57.242Z","dateModified":"2026-08-05T17:25:28.237Z","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. 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