detekt v2.0.0-alpha.6

2.0.0-alpha.6 - 2026-08-04

This is an alpha release of Detekt 2.0.0. It's built against Kotlin 2.4.10, Gradle 9.6.1, AGP 9.3.1 and is tested against JDK 25.

Notable Changes

• The detekt Gradle task now analyzes all Kotlin source sets with type resolution by default, replacing the previous type-resolution-free task - #7025
• detekt-rules-ktlint-wrapper now targets JVM 17, in preparation for the next ktlint major release which requires JVM 17+, the rest of detekt still targets JVM 8+ - #9453

Changelog

• feat(rules): add ignoreSealedClasses option to AbstractClassCanBeInterface - #9557
• docs: drop stale Android compile classpath warning note - #9550
• Recommend to use Locale.ROOT instead of Locale.US - #9532
• Recognize params swallowed by KDoc lexer in OutdatedDocumentation - #9529
• Fix UnusedPrivateProperty false negative for constructor properties - #9491
• Fix MissingSuperCall false positive when annotation is in grandparent - #9469
• Fix UseDataClass false positive for properties with a custom accessor - #9462
• Fix a potential bug on Config.getListOrDefault - #9461
• Fix UnusedPrivateFunction false positive for overloaded private extension functions with a Java (or generated) receiver type - #9450
• Fix CanBeNonNullable false negative on local variables - #9432
• Fix CognitiveComplexMethod false positive for object literal methods - #9431
• Fix ReturnCount/ThrowsCount false positive where a guard clause following a local variable declaration was still counted (with excludeGuardClauses enabled) - #9424
• Extend PropertyUsedBeforeDeclaration to follow private init calls - #9334
• Add configuration ignoredFullyQualifiedNames to UnnecessaryFullyQualifiedName rule - #9301
• Expose multiline parameter in ClassSignature - #9084
• Extract interfaces from detekt Gradle tasks - #7662
• Allow setting default autocorrect mode with Gradle property - #7040

Dependency Updates

• Update agp to v9.3.1 - #9538
• Update kotlin monorepo to v2.4.10 - #9518
• Update Gradle to v9.6.1 - #9444
• Update Gradle to v9.6.0 - #9420

Housekeeping & Refactorings

• Reduce scope of @Suppress("UNCHECKED_CAST") - #9459
• Remove irrelevant test for YamlConfig - #9457
• fix: handle trailing commas in @Configuration annotation parsing in JS generator - #9447
• Production code should not depend on fixtures - #9439

Contributors

We would like to thank the following contributors that made this release possible: @3flex, @BraisGabin, @ChristophyBarth, @FilippoVigani, @Phoenix1808, @ShubhamWorks02, @cortinico, @e5l, @eyupcanakman, @iuryeng, @loganrosen, @marpalat, @roian6, @sahilpatel2521, @tonytonycoder11

See all issues at: 2.0.0