May 2026 monthly summary for detekt/detekt focused on strengthening Kotlin Analysis API compliance by introducing a leakage-prevention rule to ensure lifetime-scoped Analysis API types do not escape analyze blocks. This work reduces risk around analysis sessions and improves maintainability of static-analysis rules. No major bugs fixed this month. Key contributions include introducing the Kotlin Analysis API leakage prevention rule, with related LeakingSessionBoundType and AvoidLeakingAnalysisApiTypesFromSessions rules, and refactoring efforts to improve build health and rule maintenance. The work was collaborative, with co-authored contributions from Claude Opus 4.6 and Brais Gabín, and included moving the rule to ruleauthors, reducing analysis count, and formatting improvements. This lays groundwork for future Analysis API rule extensions and aligns with Kotlin guidelines.

April 2026 Monthly Summary for detekt/detekt. Focused on stabilizing Kotlin static analysis accuracy in the UnnecessaryLet rule by fixing KaSymbols scope leakage and aligning with Kotlin Analysis API guidelines. Implemented safer cross-session references using KaSymbolPointer and tightened lambda parameter handling to prevent false positives. Resulting in more deterministic analyses and reduced maintenance cost.

February 2026 monthly summary for detekt/detekt focusing on feature delivery and quality improvements. Key features delivered: - Implemented a static analysis rule to report violations of non-null assertions on Map access across all Map subtypes, reducing the risk of NullPointerExceptions in Kotlin code that uses maps. - Rule logic analyzes the receiver of Map.get usages and get operator calls; if the receiver is a Map or has Map as a super type, the rule matches the Map#get signature (single argument of type K and return type V). - Included comprehensive tests and performed code quality cleanup (whitespace) to satisfy repository standards. Major bugs fixed: - No major bugs reported this month for the repo; the focus was feature delivery and quality improvements. Overall impact and accomplishments: - Strengthened static analysis coverage for common Kotlin map access patterns, reducing potential production runtime errors. - Improved consistency across Map subtypes and increased developer confidence in code quality checks. - Expanded test coverage ensuring long-term stability of the rule. Technologies/skills demonstrated: - Kotlin, static analysis rule development, type inference across generics, and test-driven development. - Code quality practices and contribution hygiene (CI-friendly whitespace cleanup). Commit references: - 7c47800c906af409b5a42cda7832bc37b7373257: Report MapGetWithNonNullAssertionOperator violations on MutableMaps (#9065) and extend detection to any Map subtype; added tests and whitespace cleanup.