Changelog and Migration Guide

1.23.0-RC3 - 2023-04-29

Notable Changes

This is the first version of Detekt that ships with the detekt-compiler-plugin. The Detekt Compiler plugin is still experimental but we're moving it closer to Detekt to make it easier to integrate. From now on the compiler plugin will follow the same versioning schema as Detekt. We invite you to try it and provide feedback till we stabilize it. - #5492
We added 20 new Rules to detekt
- BracesOnIfStatements - #5700
- BracesOnWhenStatements - #5838
- CastNullableToNonNullableType - #5653
- DoubleNegativeLambda - #5937
- ForbiddenAnnotation - #5515
- StringShouldBeRawString - #5705
- SuspendFunSwallowedCancellation - #5666
- UnusedParameter - #5722
- UnusedPrivateProperty - #5722
- Plus the bump to KtLint 0.49.0 added the following rules to the detekt-formatting ruleset:
  - EnumWrapping - #6028
  - IfElseBracing - #6028
  - IfElseWrapping - #6028
  - MultilineExpressionWrapping - #6028
  - NoBlankLineInList - #6028
  - NoConsecutiveComments - #6028
  - NoEmptyFirstLineInClassBody - #6028
  - ParameterWrapping - #6028
  - PropertyWrapping - #6028
  - StringTemplateIndent - #6028
  - TryCatchFinallySpacing - #6028
Notable changes to existing rules:
- UnnecessaryAbstractClass now only runs with type resolution - #5829
- UnusedPrivateMember has been refactored with some of its logic moved to UnusedParameter and UnusedPrivateProperty - #5722
- Removed the ignoreOverridden config from BooleanPropertyNaming, ConstructorParameterNaming, FunctionNaming, VariableNaming and FunctionParameterNaming as not useful for those rules - #5718
- Added ignoredSubjectTypes to rule ElseCaseInsteadOfExhaustiveWhen to specify types that should be ignored by the rule (#5623) - #5634
- Added allowOperators to rule DataClassContainsFunctions - #5658
- MandatoryBracesIfStatements has been removed in favor of BracesOnIfStatements - #5700
- Added ignoreWhenContainingVariableDeclaration to UseIfInsteadOfWhen to ignore captured variables - #5681
- Several rules in the detekt-formatting ruleset now accepts an indentSize parameter (see the full list here).
- We followed the KtLint decisions on turning on some rules by default, so several rules in the detekt-formatting ruleset are now turned on by default (see the full list here).
We added support for Gradle's Worker API inside Detekt Gradle Plugin, for faster execution on bigger projects. - #4128
We fixed the includes/excludes logic on the config file as they were overriding each other - #5782
We fully removed support for Spek from detekt-test-utils. The recommended testing framework is JUnit - #5785
The minimum supported Gradle version is now v6.8.3 - #5616
This version of detekt is built with Gradle v8.0.2, AGP 8.0.0, Kotlin 1.8.21 and KtLint 0.49.0 (see #5893 #5723 #5877 #6028 #6043 #5995)
We now added a Code of Conduct to our repo. Please read it and follow it when interacting with our community on our channels.

Changelog

Fix incomplete requireRootInDeclaration check in InvalidPackageDeclaration - #6045
BracesOnWhenStatements: fix false positive for necessary braces - #6042
Fix redundant ClassOrdering violations using maximum increasing section - #6003
UseIsNullOrEmpty: fix false negative with chained call - #6027
Create docs for Gradle Worker API - #6016
Compile compiler plugin against kotlin-compiler-embeddable - #6012
Update intro.mdx to use setFrom() on detekt config - #6010
Use detekt-versions.properties instead of versions.properties - #6006
Implement parentPath accessor in concrete config implementations - #6002
Increase ALIASES_LIMIT to 100 for YamlConfig - #5986
Fix elvis to +/- case in case UnnecessaryParentheses when precedence is unclear - #5983
jdkHome as @Internal - #5978
Fix broken POM file for detetk-compiler-plugin - #5971
Fix broken publishToMavenLocal - #5970
Add allowOmitUnit to rule LibraryCodeMustSpecifyReturnType - #5861
Remove dependency that creates a cycle. - #5777
Update dependency org.jetbrains:annotations to v24 - #5969
Update github/codeql-action digest to 8c8d71d - #5966
Add functions to ExitOutsideMain rule - #5963
Update README.md - #5954
Prevent import statements from counting as references for UnusedPrivateProperty - #5942
Fix ExpressionBodySyntax not checking property getters/setters - #5938
Improve correctness of UnusedPrivateProperty - #5935
Fix documentation for deprecated 'reports' object (Issue #5908) - #5924
Print file path report as link file - #5921
"detekt" or "Detekt" - #5898
Update JSON schema URL - #5881
Add support for local suppression inside formatting - #5876
Fix checkExhaustiveness for formatting and third party rules - #5869
Allow newline style for MaxChainedCallsOnSameLine - #5865
Declare inputs and outputs to support incremental build for testPluginKotlinc - #5862
Use code syntax for Unit for ImplicitUnitReturnType rule - #5857
MatchingDeclarationName. KtFilesSpec also remove .common.kt suffix from kotlin files - #5851
Fix double mutability issues with Gradle plugin's use of ConfigurableFileCollection - #5850
MagicNumber - Make ignoreNamedArgument catch more complex expression - #5837
Exclude super call when generating guard clauses - #5835
Enable test retry for all our modules - #5825
Stop configuring report merge tasks while configuring Detekt tasks - #5813
FunctionMatcher support for fully qualified function names - #5812
Boy Scout - #5808
Simplify TestConfig usages - #5801
Reduce configuration of UnusedPrivateMember's split rules - #5800
Force SerialVerionUID to be private - #5798
Exclude the KMP test folders for android - #5797
Add aliases for PackageNaming and InvalidPackageDeclaration - #5795
Forbid using Jupiter Kotlin assertions - #5794
ModifierOrder: fix false positive with block comments - #5791
Fixed ProtectedMemberInFinalClass rule reporting valid JVM finalize - #5788
Remove unnecessary usage of BeforeAll in tests - #5781
Run Kotlin compiler plugin CLI test as part of standard build - #5766
Refactor to remove java.util.Array* imports - #5761
Replace java.util.Stack with Kotlin's ArrayDeque implementation - #5760
Replace java.time.Duration with kotlin.time.Duration - #5759
Add NixOS installation method to doc - #5757
Remove & forbid usage of java.util.stream - #5756
Use stdlib functions for file & path operations - #5754
Enable UnnecessaryBackticks in detekt project - #5753
Update docusaurus monorepo to v2.3.1 - #5752
Resolve runtime classpaths consistently with compile classpaths - #5730
Exclude new Kotlin Test directories in default config - #5727
Fail when unexpected version of kotlin-compiler-embeddable is on runtime classpath - #5726
Fix IgnoredReturnValue rule crash in parallel mode - #5724
Use name that return name after backticks - #5719
UnusedPrivateMember - Fix false positive in case of invoke operator - #5717
Fix false positive for CanBeNonNullable rule - #5714
IgnoredReturnValue: fix false negative when annotation is on the package - #5706
Check Thread.sleep for block expression - #5699
Fix false positive of in UnnecessaryParentheses - #5684
Fix url and kotlin reference support in kdoc - #5683
Add config for variable expression in when - #5681
Enable NoSemicolons rule - #5663
Use correct resolvable/consumable flags on detekt's configurations - #5657
Prepare for Gradle 8 - #5656
ExplicitCollectionElementAccessMethod rule update - #5654
Cast nullable to non nullable type - #5653
Enable verbose mode for Codecov GH Action - #5652
Fail build when issues found with JVM target compatibility of related compile tasks - #5651
Don't silently use Kotlin compiler fallback strategy - #5650
Documentation tweaks - #5639
Have consistent compile-test-snippets between project and system property - #5630
Exclude operator functions in function min/max length - #5618
Broken link at EmptyFunctionBlock - #5604
Update rule description for errorprone rules - #5603
FunctionMaxLength false positive for overridden methods #5590 - #5599
Report proper code position in MaxLineLength - #5583
Allow access to nonpublic members of public types in java.base/java.lang package - #5579
NonBooleanPropertyPrefixedWithIs: Allow AtomicBoolean - #5577
Pass compilation output classes to detekt analysis classpath - #5556
Fix KDocReferencesNonPublicProperty false positive - #5534

Dependency Updates

Update JaCoCo to v0.8.10 - #6044
Update plugin pluginPublishing to v1.2.0 - #5975
Update ktlint to v0.48.1 - #5661
Update dependency com.android.tools.build:gradle to v7.4.0 - #5693
JaCoCo 0.8.9 - #5959
Update dependency com.github.tschuchortdev:kotlin-compile-testing to v1.5.0 - #5882
Update dependency org.jetbrains.dokka to v1.8.10 - #5878
Compile detekt-compiler-plugin against standard Kotlin compiler artifact - #5765
Migrate to SnakeYAML Engine - #5751
Update kotlin monorepo to v1.8.10 - #5745
Update ktlint to v0.48.0 - #5625
Migrate to Gradle Nexus Publish Plugin - #5554
Update dependency io.github.detekt.sarif4k:sarif4k to v0.2.0 - #5496

Housekeeping & Refactorings

Reduce eager POM task creation - #6041
Improve our configuration of ClassNaming and FunctionNaming - #6019
Comment text in the Issue/PR Template - #5992
Fix typo: Github -> GitHub - #5956
Review all Detekt and Detekt Gradle Plugin usages. - #5955
Review all Detekt and Detekt Gradle Plugin usages. - #5953
Add a test for catching undocumented public interfaces - #5951
Execute tests in parallel - #5944
Make GeneratorSpec use resources - #5932
Cleanup detekt-formatting to use detekt's own assertThat function - #5911
Stale any issue with support tag in one month - #5904
Remove instances of double mutability - #5899
Handle todo in LinesOfCode logic - #5897
Boy scout - detekt-generator - #5854
Tweak GHA configs a bit - #5852
Create generateWebsite - #5849
Remove dependency between check and jacocoMergedReport - #5846
Sort deprecation properties - #5845
Simplify generate documentation - #5844
Remove unnecessary @Suppress("ReturnCount") - #5841
Cleaner merging of Gradle blocks for functionalTests - #5830
Replace trimMargin usages - #5827
Disable PTS from local and enable it for PRs - #5826
Activate MultilineRawStringIndentation on detekt - #5819
Remove single-use times method, use stdlib's repeat instead. - #5774
Remove redundant build config - #5617
Migrate to AGP namespaces - #5569
Fix typo - #5557

Contributors

We would like to thank the following contributors that made this release possible: @3flex, @BeBAKE, @BraisGabin, @Goooler, @SaumyaBhushan, @TWiStErRob, @VitalyVPinchuk, @adef145, @asomov, @atulgpt, @chao2zhang, @cketti, @cortinico, @drawers, @dzirbel, @igorwojda, @lexa-diky, @luanpotter, @marschwar, @mjovanc, @mmorozkov, @ncteisen, @osipxd, @ov7a, @schalkms, @t-kameyama

See all issues at: 1.23.0

1.22.0 - 2022-11-20

Notable Changes

We're introducing the Detekt Marketplace, a place where you can add your own 3rd party extension such as rule, plugins, custom reporter, etc. - #5191
Our website is now versioned. You can find the changes for each version using the dropdown menu on the top bar. Documentation for the upcoming version (next) can be found here.
We added 16 new Rules to detekt
- AlsoCouldBeApply - #5333
- MultilineRawStringIndentation - #5058
- TrimMultilineRawString - #5051
- UnnecessaryNotNullCheck - #5218
- UnnecessaryPartOfBinaryExpression - #5203
- UseSumOfInsteadOfFlatMapSize - #5405
- FunctionReturnTypeSpacing from KtLint - #5256
- FunctionSignature from KtLint - #5256
- FunctionStartOfBodySpacing from KtLint - #5256
- NullableTypeSpacing from KtLint - #5256
- ParameterListSpacing from KtLint - #5256
- SpacingBetweenFunctionNameAndOpeningParenthesis from KtLint - #5256
- TrailingCommaOnCallSite from KtLint - #5312
- TrailingCommaOnDeclarationSite from KtLint - #5312
- TypeParameterListSpacing from KtLint - #5256
We added a new ruleset called detekt-rules-ruleauthors containing rules for Rule Authors to enforce best practices on detekt rules such as the new ViolatesTypeResolutionRequirements - #5129 #5182
We added a new ruleset called detekt-rules-libraries containing rules mostly useful for Library Authors - We moved the following rules inside ForbiddenPublicDataClass, LibraryCodeMustSpecifyReturnType, LibraryEntitiesShouldNotBePublic this new ruleset - See Migration below on how to migrate #5360
We added support for JVM toolchain. This means that detekt will now respect the JDK toolchain you specify on your Gradle configuration. You will also be able to specify a custom JDK home with the --jdk-home CLI parameter - #5269
Improvement for Type Resolution
- We will now skip rules annotated with @RequiresTypeResolution when without Type Resolution - #5176
- We will warn users if they run rules requiring Type Resolution when Type Resolution is disabled, so they're not silently skipped - #5226
Improvement for Config Management
- We added exhaustiveness check during config validation. You can enable it checkExhaustiveness: true in your config file. This is disabled by default. - #5089
- We added support for generating custom configuration for rule authors - #5080
Deprecations & Removals
- We deprecated the MultiRule class as it was overly complicated. The suggested approach is to just provide separated rules. - #5161
- The --fail-fast CLI flag (and failFast Gradle property) has been removed. It was deprecated since 1.16.x - #5290
- We deprecated the following rules DuplicateCaseInWhenExpression, MissingWhenCase, RedundantElseInWhen as the Kotlin Compiler is already reporting errors for those scenarios - #5309
- We removed the --print-ast CLI flag as PsiViewer provides the same features - #5418
Notable changes to existing rules
- ArrayPrimitive is now working only with Type Resolution - #5175
- WildcardImport is now running also on tests by default - #5121
- ForbiddenImport allows now to specify a reason for every forbidden import - #4909
- IgnoredReturnValue: option restrictToAnnotatedMethods is now deprecated in favor of restrictToConfig - #4922
This version of detekt is built with Gradle v7.5.1, AGP 7.3.1, Kotlin 1.7.21 and KtLint 0.47.1 (see #5363 #5189 #5411 #5312 #5519)
The minimum supported Gradle version is now v6.7.1 - #4964

Migration

We deprecated a number of rules in this release.

You should update your config file as follows:

  potential-bugs:
    active: true
    ...
-   DuplicateCaseInWhenExpression:
-     active: true
    ...
-   MissingWhenCase:
-     active: true
-     allowElseExpression: true
    ...
-   RedundantElseInWhen:
-     active: true

  style:
    active: true
    ...
-   ForbiddenPublicDataClass:
-     active: true
-     excludes: ['**']
-     ignorePackages:
-       - '*.internal'
-       - '*.internal.*'
    ...
-   LibraryCodeMustSpecifyReturnType:
-     active: true
-     excludes: ['**']
    ...
-   LibraryEntitiesShouldNotBePublic:
-     active: true
-     excludes: ['**']

If you wish to use the libraries ruleset we introduced you should add the following to your config file:

+ libraries:
+   active: true
+   ForbiddenPublicDataClass:
+     active: false
+   LibraryEntitiesShouldNotBePublic:
+     active: false
+   LibraryCodeMustSpecifyReturnType:
+     active: true

and add the following to your build.gradle file:

detektPlugins("io.gitlab.arturbosch.detekt:detekt-rules-libraries:$version")

If you're using our KtLint wrapper (i.e. detekt-formatting) you should also update your config file as follows:

formatting:
  active: true
  ...
- TrailingComma:
-   active: false
-   autoCorrect: true
-   allowTrailingComma: false
-   allowTrailingCommaOnCallSite: false
  ...
+ TrailingCommaOnCallSite:
+   active: false
+   autoCorrect: true
+   useTrailingCommaOnCallSite: false
+ TrailingCommaOnDeclarationSite:
+   active: false
+   autoCorrect: true
+   useTrailingCommaOnDeclarationSite: false

Changelog

ReturnCount: correctly count assignment expressions with elvis return as guard clauses - #5539
UnnecessaryPartOfBinaryExpression: fix false positive with pair creation - #5516
False positive at UnnecessaryPartOfBinaryExpression - #5514
Update documentation for TrailingComma rules - #5513
TrimMultilineRawString false-positive on annotation parameters - #5476
detekt 1.22.0-RC1 -> 1.22.0-RC2 breaks UnreachableCode - #5435
detekt 1.22.0-RC1 -> 1.22.0-RC2 breaks ignoreAnnotated - #5427
Fix issues introduced by #5152 - #5508
MultilineLambdaItParameter: fix false positive for one-line statements with a lambda argument - #5505
UseArrayLiteralsInAnnotations: fix false negative with primitive array factory calls - #5482
TrimMultilineRawString: fix false positive when it's expected as constant - #5480
Fix false negative SafeCast with no braces - #5479
Update gradle/wrapper-validation-action digest to 55e685c - #5472
Grant permission for type resolution Gradle job - #5470
Fix ObjectPropertyNaming Rule false positive - #5466
Fix LambdaParameterNaming rule false positive - #5465
Fix ReturnCount false positive when excludeReturnFromLambda is enabled - #5459
CognitiveComplexity: count else/else-if as one complexity - #5458
Fix false positive MultilineRawStringIndentation with tab indentation - #5453
Don't show the number of issues generating the BindingContext - #5449
Make detekt less noisy - #5448
New ruleauthors rule for Entity.from(x.nameIdentifier ?: x) -> Entity.atName(x) - #5444
Separating ComplexMethod rule into CyclomaticComplexMethod and CognitiveComplexMethod - #5442
Improve error reporting for CascadingCallWrapping - #5439
TrimMultilineRawString: fix false positive with not a raw string - #5438
BooleanPropertyNaming highlight only the name of the variable - #5431
Deprecate TrailingComma as it's now split in two rules - #5423
Remove unused constant - #5421
Report if/else as issue location instead of block - #5407
Remove some unnecessary suppressions - #5400
Check FormattingRule is auto-correctable by information provided by ktlint - #5398
Fix false negative MultilineLambdaItParameter on complex multiline single statement - #5397
ObjectPropertyNaming: fix false positive with top level properties - #5390
Remove usage of MPP targets function for JVM-only projects - #5383
UnnecessaryNotNullCheck: fix false negative with smart casted arguments - #5380
Add missing overlapping info & fix rules URLs - #5378
AlsoCouldBeApply: fix false positive when all statements are not it-started expressions - #5376
UnusedPrivateMember: fix false negative with named arguments - #5374
Change requires type resolution rule warning to debug level to not spam the user console - #5353
Report UseDataClass findings on class name - #5352
Report LabeledExpression as the label instead of the whole expression - #5351
Report CastToNullableType at the cast operator instead of the whole expression - #5350
Convert previously known string property to list based on default value - #5347
CastToNullableType: highlights too much - #5346
UseDataClass flags the whole class body, not just the name - #5338
CanBeNonNullable: explain why the rule does what it does. - #5332
Differentiate between correctable and non-correctable KtLint rules - #5324
ReturnCount 1.22.0 crashes on valid 1.21.0 config property excludedFunctions when using --all-rules cli flag - #5323
LabeledExpression to highlight only label - #5316
Use the correct source directory set on JVM - #5163
Get Android variant compile classpath from compileConfiguration - #5152
Use list config for FunctionOnlyReturningConstant>excludedFunctions - #5120
MaxLineLength: raw typo and test cleanup - #5315
EndOfSentenceFormat: fix HTML tag heuristic - #5313
Fix EndOfSentenceFormat highlight - #5311
Introduce configFile property on DetektGenerateTask - #5308
Improve debug suggestion message - #5300
Fat-Jar version of detekt-generator module - #5297
Toolchains docs - #5293
Adopt new AGP dsl - #5288
NonBooleanPropertyPrefixedWithIs: Allow boolean functions - #5285
Provide the current classpath inside KotlinEnvironmentResolver - #5275
Fix false-positive on NestedScopeFunctions - #5274
Use convention method to set task property defaults - #5272
Update docusaurus monorepo to v2.1.0 - #5270
detektVersionReplace.js plugin is not replacing all [detekt_version] tags on website - #5266
Update ktlint rule doc links - #5258
Remove redundant rule config for rules enabled by default - #5257
UnusedPrivateMember: fix false positive with backtick parameters - #5252
Improve MultilineRawStringIndentation - #5245
UnnecessaryLet: fix false positive with with invoke operator calls - #5240
Introduce baseline tooling api - #5239
Allow secondary constructors to reference CoroutineDispatchers - #5227
Update UnnecessaryAbstractClass issue description to be less verbose - #5224
Update plugin com.gradle.common-custom-user-data-gradle-plugin to v1.8.0 - #5223
Pin dependencies - #5222
Remove rule from NamingRules multi rule - #5212
Run all rules from EmptyBlocks multi rule individually - #5208
Run all rules from KDocStyle multi rule individually - #5207
Docs: GitHub - Add link to configure Sarif severity alert level - #5206
Fix errors with detektGenerateConfig - #5199
Forbid constructors with ForbiddenMethodCall - #5195
Update github/codeql-action digest to 2ca79b6 - #5177
Allow to ignore overloaded methods for the complex interface rule (#5165) - #5173
Add excludesRawStrings in MaxLineLength - #5171
Enable Predictive Test Selection for local builds - #5170
Update dependency org.kohsuke:github-api to v1.307 - #5168
Update dependency com.github.ajalt:clikt to v2.8.0 - #5167
Update docusaurus monorepo to v2.0.1 - #5166
Run build-logic Kotlin compilation out of process on CI - #5162
Add information about exhaustiveness check to documentation - #5160
Use getter when determining whether custom config path is set in DetektGenerateConfigTask - #5157
Limit Kotlin version warning suppression scope in build - #5156
Re-enable warnings as errors for detekt-gradle-plugin - #5155
Bundle slf4j-nop in detekt-formatting JAR - #5153
Fix false negative for UseRequire when thrown in conditional block - #5147
Allow parentheses for unclear precedence with range operator - #5143
Mark apiDump task as incompatible with configuration cache - #5134
Improve binding context management - #5130
RedundantExplicitType add annotation @RequiresTypeResolution - #5128
Disable ExitOutsideMain if contextBinding is empty - #5127
Use list config for DataClassContainsFunctions>conversionFunctionPrefix - #5119
Support proper globbing in ReturnCount - #5118
Improve finding message of ExplicitItLambdaParameter - #5117
Update JamesIves/github-pages-deploy-action digest to 13046b6 - #5110
UnusedUnaryOperator: fix false positive with var assignment and if expression - #5106
Tag publishPlugins task as incompatible with configuration cache - #5101
Make verifyGeneratorOutput task configuration cache compatible - #5100
Remove obsolete FeatureInAlphaState opt in - #5099
Remove explicit RequiresOptIn compiler flag - #5098
Use Gradle's configuration cache by default - #5095
Detect undocumented protected classes, properties, and functions - #5083
ReturnCount.excludedFunctions should be a List<String> - #5081
Make ForbiddenMethodCall to support property getters/setters and method references - #5078
Refactor Gradle tasks to use Gradle's managed properties - #4966
Add option to add a reason to ForbiddenMethodCall - #4910
UnnecessaryParentheses: add options to allow in ambiguous cases - #4881

Dependency Updates

Update dependency com.android.tools.build:gradle to v7.3.1 - #5411
Update plugin com.gradle.enterprise to v3.11.2 - #5406
Update dependency org.jetbrains.dokka to v1.7.20 - #5401
Update dependency org.yaml:snakeyaml to v1.33 - #5354
Update dependency org.spekframework.spek2:spek-dsl-jvm to v2.0.19 - #5237
Update dependency com.android.tools.build:gradle to v7.2.2 - #5178
Update org.jetbrains.kotlinx - #5072
Update dependency org.jetbrains.dokka to v1.7.10 - #5070
Bump ktlint to version 0.46.1 - #5044
AssertJ 3.23.1 - #4265

Housekeeping & Refactorings

Document and test edge cases for ForbiddenMethodCall function signatures - #5495
Fix invalid syntaxes in test code - #5446
Improve raw strings format - #5244
Enable trim multiline raw string - #5243
Remove old configurations - #5198
Improve tests in UnnecessaryParenthesesSpec - #5197
Remove multi rule FileParsingRule - #5193
Remove unused dry run properties from baseline/config tasks - #5158
remove SimpleGlob in favor of String.simplePatternToRegex() - #5144
Remove unused property - #5135
Assert end source locations - #5116
Forbid usage of DiagnosticUtils.getLineAndColumnInPsiFile - #5109
Configure 'ForbiddenImport' to use value and reason - #5105
Enable Kotlin's new approach to incremental compilation - #5092
Fix current indentation - #5059

See all issues at: 1.22.0

1.21.0 - 2022-07-16

We're delighted to announce the next upcoming stable release of detekt: 1.21.0 🎉 This release is coming with 6 new rules, new API and functionalities and several stability improvements.

We want to thank you very much our Sponsors for the support in those last months. The work behind detekt is all happening on a voluntary basis, and we're more than grateful for all the support we get from the Open Source Ecosystem.

We're also excited to announce that we're now having an Open Source Gradle Enterprise instance. When building the detekt projects, you'll benefit from the Gradle Remote Cache that this instance is providing!

Finally, we want to take the opportunity to thank our contributors for testing, bug reporting and helping us release this new version of detekt. You're more than welcome to join our community on the #detekt channel on KotlinLang's Slack (you can get an invite here).

Notable Changes

We enabled ~30 new rules by default which we believe are now stable enough. - #4875
We added 7 new Rules to detekt
- NullableBooleanCheck - #4872
- CouldBeSequence - #4855
- UnnecessaryBackticks - #4764
- ForbiddenSuppress - #4899
- MaxChainedCallsOnSameLine - #4985
- CascadingCallWrapping - #4979
- NestedScopeFunctions - #4788
We added support for Markdown reports - #4858
We now allow users and rule authors to specify a reason for every value in the config file - #4611 Please note that this feature requires a rule to be extended to support it. If you're a rule author you can start using it right away in your rule. We're looking into using this feature in some first party rule starting from detekt 1.22.0.
We now report as warnings the Strings in the config file that can be converted to be an array - #4793
We added a dependency on ConTester to help us verify concurrency scenarios for detekt - #4672
For contributors: we restructured our build setup to be use Gradle composite build - #4751

Migration

We fixed a bug related to function with KDocs and how their location in the source code was calculated (see #4961 and #4887).

Because of this, some users might have to recreate their baseline as the location of such functions are not matched anymore against the baseline. You can do so by deleting your old baseline and invoking the detektBaseline task (or the corresponding task, based on your configuration).

Changelog

ReturnCount: Make configuration parameter more explicit - #5062
Remove redundant null check - #5061
Drop redundant Gradle workaround - #5057
Update ktlint links from website to readme - #5056
Improve extensions.doc format with admonitions - #5055
Update docusaurus monorepo to v2.0.0-beta.22 - #5050
Enable strict Kotlin DSL precompiled script plugins accessors generation - #5048
MaxChainedCallsOnSameLine: don't count package references as chained calls - #5036
Xml Report Merger now merges duplicate smells across input report files - #5033
Add ending line and column to Location.kt - #5032
Fix type resolution link in Contributing.md - #5027
#5014 Fix MaxChainedCallsOnSameLine false positives - #5020
Add endColumn/endLine to SARIF region - #5011
Removed UnnecessaryAbstractClass if it inherits from a abstract class - #5009
Only recommend using index accessors for Java classes that are known collections - #4994
UnusedImports: fix false positive for unresolved imports - #4882
Fix Signatures.kt:buildFunctionSignature - #4961
Loading a specific resource from a module must use class from module - #5008
Update github/codeql-action digest to 3f62b75 - #5007
Show finding at declaration name instead of the whole declaration - #5003
NamedArguments: don't count trailing lambda argument - #5002
Address TextLocation for Wrapping - #4998
Support markdown report in Gradle plugin - #4995
Fix false-negative for CanBeNonNullable - #4993
Give a better error message for --jvm-target - #4978
Fix rule code samples to be valid Kotlin code - #4969
Use plain ASCII output in standard reports - #4968
UnnecessaryApply: fix false negative for assignment - #4948
Support disabling config validation via tooling spec - #4937
UnusedPrivateMember: highlight declaration name - #4928
Provide a priority field for DetektProvider - #4923
CastToNullableType: allow casting null keyword - #4907
Update plugin com.gradle.common-custom-user-data-gradle-plugin to v1.7.2 - #4897
Set strict dependency on tested Kotlin compiler version - #4822
Simplify regular expressions - #4893
Remove redundant character escape in RegExp - #4892
Reformat Markdown files to comply with the spec - #4891
UnnecessaryInnerClass: fix false negative with this references - #4884
UselessCallOnNotNull: fix false positive for unresolved types - #4880
Update MagicNumber rule to exclude .kts files - #4877
CanBeNonNullable: fix false positives for parameterized types - #4870
UnnecessaryInnerClass: fix false positives labeled expression to outer class - #4865
UnnecessaryInnerClass: add test for safe qualified expressions - #4864
Fix a confusing Regex in the Compose webpage - #4852
Fix edit URLs for the website - #4850
detektGenerateConfig adds the configuration of plugins - #4844
Update dependency prism-react-renderer to v1.3.3 - #4833
Search in all versions.properties, not just the first one #4830 - #4831
Improve exception message - #4823
Fix ValShouldBeVar false positive inside unknown type - #4820
Add a recent conference talk link - #4819
False positive for unused imports #4815 - #4818
Revert "Display dynamic --jvm-target values when using --help flag (#4694)" - #4816
UnnecessaryAbstractClass: report only the class name - #4808
Fix wrong replacement suggestion for UnnecessaryFilter - #4807
UseOrEmpty: fix false positive for indexing operator calls with type parameters - #4804
ExplicitCollectionElementAccessMethod: fix false positive for get operators with type parameters - #4803
Add tests for #4786 - #4801
Add documentation link for rules in html report - #4799
Improve rule documentaion and smell message of NamedArguments - #4796
Improve issue description and smell message of DestructuringDeclarationWithTooManyEntries - #4795
NestedScopeFunctions - Add rule for nested scope functions - #4788
Partially drop redundant usage of "dry run" in Gradle plugin tests - #4776
Allow additionalJavaSourceRootPaths to be defined on @KotlinCoreEnvironmentTest - #4771
Report KDoc comments that refer to non-public properties of a class - #4768
Self-inspect the detekt-gradle-plugin - #4765
Pass args to DetektInvoker as List<String> - #4762
Cleanup Gradle Plugin Publications - #4752
Break a dependency between detekt-gradle-plugin and detekt-utils - #4748
Remove suspend lambda rule with CoroutineScope receiver due to not de… - #4747
VarCouldBeVal: Add configuration flag ignoreLateinitVar - #4745
UnnecessaryInnerClass: fix false positive with references to function type variables - #4738
Fix false positive on VarCouldBeVal in generic classes - #4733
OutdatedDocumentation: fix false positive with no primary constructor - #4728
Android Gradle: add javac intermediates to classpath - #4723
OptionalWhenBraces: fix false negative when the single statement has comments inside - #4722
Document pre-commit hook for staged files - #4711
Enable rules by default for 1.21 - #4643

Dependency Updates

Update plugin binaryCompatibilityValidator to v0.12.0 - #5456
Update dependency gradle to v7.5 - #5074
Update plugin binaryCompatibilityValidator to v0.11.0 - #5069
Update dependency org.jetbrains.kotlinx:kotlinx-coroutines-core to v1.6.3 - #4976
Update dependency org.jetbrains.dokka to v1.7.0 - #4974
Update plugin binaryCompatibilityValidator to v0.10.1 - #4954
Update dependency org.jetbrains.kotlinx:kotlinx-coroutines-core to v1.6.2 - #4868
Update dependency com.android.tools.build:gradle to v7.2.1 - #4861
Update plugin binaryCompatibilityValidator to v0.10.0 - #4837
Update dependency io.mockk:mockk to v1.12.4 - #4829
Update dependency com.android.tools.build:gradle to v7.2.0 - #4824
Add dependency-analysis plugin and implement some recommendations - #4798
Add dependency on slf4j-nop to silence warning - #4775
Update plugin dokka to v1.6.21 - #4770
Update org.jetbrains.kotlin to v1.6.21 - #4737
Update dependency com.github.breadmoirai:github-release to v2.3.7 - #4734
Update plugin binaryCompatibilityValidator to v0.9.0 - #4729

Housekeeping & Refactorings

Fix ComplexMethod debt and refactor code - #5029
Fix ReturnCount debt and refactor code - #5026
Add test for ForbiddenMethodCall with getters - #5018
Measure flakyness on Windows CI - #4742
Declare nested test classes as non-static - #4894
Remove deprecated usages in gradle-plugin test - #4889
Remove reference to contributor list - #4871
Add missing image - #4834
Upgrade to GE enterprise 3.10 - #4802
Fix broken snapshot publishing - #4783
Remove pending Gradle version milestones from comments - #4777
Add more tests for Annotation Suppressor - #4774
fix: add test case that fails if environment is not properly set up - #4769
Disable UnusedImports for the detekt project - #4741
Remove Unnecesary @Nested - #4740
Update the argsfile to unblock runWithArgsFile failing locally - #4718

See all issues at: 1.21.0

1.20.0 - 2022-04-14

We're extremely excited to share with you all the next upcoming stable release of detekt: 1.20.0 🎉 This release is coming with 16 new rules, new API and functionalities and several stability improvements.

First, much thanks to our sponsors ❤️ as we were able to buy a domain and move our website to https://detekt.dev/.

As for the feature shipped, we work a lot on the Reporting side: we added a new type of reporting, improved the styling of the existing one and generally reduced the unnecessary warnings of run with type resolution.

For rules like ForbiddenMethod where you can configure a signature of a method you want to use in your rule, we added a new syntax that allows to reference generic methods & extension functions.

We update a lot of the libraries we depend on bringing detekt up to the ecosystem: KtLint 0.45.2, Kotlin 1.6.20 and Gradle 7.4.2 to name a few.

Finally, we also migrated all of our tests from Spek to JUnit. This was a huge effort that will hopefully make easier for contributors to be involved with detekt.

As always, we want to take the opportunity to thank our contributors for testing, bug reporting and helping us release this new version of detekt. You're more than welcome to join our community on the #detekt channel on KotlinLang's Slack (you can get an invite here).

Notable Changes

With this detekt version, rule authors can define the default configuration for their custom rules. This default configuration will be merged together with the user configuration and can be overridden by the user if they wish. More on this here #4315. The formatting ruleset provided by detekt is updated to use this new mechanism - #4352
We've added 16 new rules:
- UnnecessaryInnerClass - #4394
- CanBeNonNullableProperty - #4379
- NullCheckOnMutableProperty - #4353
- SuspendFunWithCoroutineScopeReceiver - #4616
- ElseCaseInsteadOfExhaustiveWhen - #4632
- TrailingComma - From KtLint - #4227
- UnnecessaryParenthesesBeforeTrailingLambda - From KtLint - #4630
- BlockCommentInitialStarAlignment - From KtLint - #4645
- CommentWrapping - From KtLint - #4645
- DiscouragedCommentLocation - From KtLint - #4645
- FunKeywordSpacing - From KtLint - #4645
- FunctionTypeReferenceSpacing - From KtLint - #4645
- KdocWrapping - From KtLint - #4645
- ModifierListSpacing - From KtLint - #4645
- TypeArgumentListSpacing - From KtLint - #4645
- Wrapping - From KtLint - #4645
We've made several improvements to the console reporting:
- The HTML report has now a better CSS styling - #4447
- The default reporting format is now LiteFindingsReport (which is more compact reporting and similar to other tools in the ecosystem. You can see an example here) - #4449.
- We've added issue details to findings on FindingsReport and FileBasedFindingsReporter - #4464
- We suppressed several warnings reported when running with type resolution - #4423
We fixed a regression introduced in 1.19.0 for users using ignoreAnnotated running without type resolution - #4570
For rules like ForbiddenMethod where you can specify a method name in the config file, now we added support for:
- Matching functions with generics - #4460
- Matching extension functions - #4459
We've fixed a security vulnerability related to XML parsing - #4499
We've changed the behavior of the baseline task. Now the baseline is always update, even if you fixed all the issues in your codebase - #4445
We now enable the naming ruleset by default also on tests. Previously they were excluded - #4438
This version of detekt is built with Gradle v7.4.2, AGP 7.1.3 and Kotlin 1.6.20 (see #4530 #4573 #4133 #4277 #4665)
This version of detekt is wrapping KtLint version 0.45.2 (see #4227 #4630 #4645 #4690)
For contributors: we migrated all our tests from Spek to JUnit due to better support and tooling #4670.

Changelog

Display dynamic --jvm-target values when using --help flag - #4694
CanBeNonNullable shouldn't consider abstract properties - #4686
NonBooleanPropertyPrefixedWithIs: Allow boolean function reference - #4684
[VarCouldBeVal] fix overrides false positives - #4664
Add ignoreOverridden support for BooleanPropertyNaming rule - #4654
Fix regression generating configuration - #4646
Fix concurrency issue when creating PomModel (#4609) - #4631
UnnecessaryAbstractClass: fix false positive when the abstract class has properties in the primary constructor - #4628
Properly set toolVersion on DetektExtension - #4623
NamedArguments: Ignore when argument values are the same as the parameter name - #4613
Parallel invocation of AnalysisFacade fails spuriously in 1.20.0-RC1 - #4609
NoSuchElementException after updating to 1.20.0-RC1 - #4604
Better error classification in Gradle Enterprise. - #4586
Fix for missing /kotlin folder when running on Android projects - #4554
Deprecate continuationIndentSize from the Indentation rule - #4551
Fix performance issue for regexp in Reporting.kt - #4550
Revert "trim values when parsing the baseline (#4335)" - #4548
Fix AutoCorrection crashing with Missing extension point - #4545
Make DoubleMutabilityForCollection configurable and set a DoubleMutability alias - #4541
Fix AnnotationExcluder - #4518
Fix false positive of UnnecessaryInnerClass - #4509
[MaxLineLength] Fix signature in for blank characters in the Baseline - #4504
Fix overridden function reporting for CanBeNonNullable rule - #4497
Set the name of functions and paramenters between ` to improve the readability - #4488
update InvalidPackageDeclaration to report if rootPackage is not present - #4484
[VarCouldBeVal] Override vars will not be flagged if bindingContext is not set - #4477
Document the overlapping rules from formatting - #4473
Match functions signatures with lambdas on it - #4458
Add option for OutdatedDocumentation to allow param in constructor pr… - #4453
Ignore private operators when we don't have ContextBingding in UnusedPrivateMember - #4441
Add documentation for Suppressors - #4440
[FunctionNaming] Don't allow the usage of ` in function names - #4439
Add list of functions to skip in IgnoredReturnValue rule - #4434
Extend CanBeNonNullable rule to check function params - #4431
Extend VarCouldBeVal to include analysis of file- and class-level properties - #4424
Formulate rule/sample-extensions descriptions consistently - #4412
Fix false-positive on ExplicitCollectionElementAccessMethod - #4400
Fixes false negatives in UnnecessaryAbstractClass - #4399
Add first draft of a rule description style guide - #4386
Forbid usage of java.lang.ClassLoader.getResourceAsStream - #4381
Update Sponsor button to detekt's one - #4378
[OptionalUnit] Allow a function to declare a Unit return type when it uses a generic function initializer - #4371
Completely-empty abstract classes will now be flagged by UnnecessaryAbstractClass - #4370
Fix false positive in RethrowCaughtException for try with more than one catch (#4367) - #4369
Testing and rule improvement for EmptyElseBlock - #4349
UnusedPrivateMember should not report external classes/interfaces - #4347
[UseDataClass] Do not report on inner classes - #4344
Support jvmTarget 17 - #4287
UnderscoresInNumericLiterals: Allow numbers with non standard groupings - #4280
Introduce DefaultValue type - #3928

Dependency Updates

Update plugin dokka to v1.6.20 - #4717
Update dependency com.android.tools.build:gradle to v7.1.3 - #4695
JaCoCo 0.8.8 - #4680
Update dependency org.jetbrains.kotlinx:kotlinx-coroutines-core to v1.6.1 - #4673
Update dependency gradle to v7.4.2 - #4658
Update dependency org.jetbrains.kotlinx:kotlinx-html-jvm to v0.7.5 - #4657
Update dependency gradle to v7.4.1 - #4622
Update dependency com.android.tools.build:gradle to v7.1.2 - #4594
Update dependency com.android.tools.build:gradle to v7.1.1 - #4561
Update plugin pluginPublishing to v0.20.0 - #4502
Update JamesIves/github-pages-deploy-action action to v4.2.1 - #4475
Update JamesIves/github-pages-deploy-action action to v4.1.9 - #4455
Update plugin gradleVersions to v0.41.0 - #4454
Revert "Update plugin pluginPublishing to v0.19.0 (#4429)" - #4452
Update plugin pluginPublishing to v0.19.0 - #4429
Update dependency io.mockk:mockk to v1.12.2 - #4427
Shadow 7.1.2 - #4422
Update plugin dokka to v1.6.10 - autoclosed - #4407
Update dependency org.jetbrains.dokka:jekyll-plugin to v1.6.10 - #4406
Update dependency org.jetbrains.kotlinx:kotlinx-coroutines-core to v1.6.0 - #4393
Update dependency gradle to v7.3.3 - #4392
Update dependency org.yaml:snakeyaml to v1.30 - #4375
Update dependency gradle to v7.3.2 - #4374
Update plugin shadow to v7.1.1 - #4373
Update dependency gradle to v7.3.1 - #4350
Update plugin dokka to v1.6.0 - #4328

Housekeeping & Refactorings

Add missing Test annotations - #4699
Add failure message assertions to Gradle's "expect failure" tests - #4693
Drop (most) Groovy DSL tests - #4687
Check detekt-gradle-plugin functionalTest source when running detekt task - #4681
Fix typo in AvoidReferentialEquality rule description - #4644
Housekeep Gradle scripts - #4589
Refactor config printer to improve testability - #4580
avoid usage of java stream for parameterized tests - #4579
split rule documentation printer to improve testability - #4578
Make VERSION_CATALOGS stable - #4577
Enable Gradle's configuration cache by default - #4576
Migrate detekt-rules-performance tests to JUnit - #4569
Migrate detekt-rules-complexity tests to JUnit - #4566
Drop Groovy DSL testing in DetektTaskDslSpec - #4563
Reuse setReportOutputConventions - #4546
Code cleanups - #4542
Fix MaxLineLength violation on detekt main inside IgnoredReturnValue rule - #4539
Use Java 17 for all CI jobs - #4526
Migrate tests in detekt-rules-errorprone to junit - #4523
Drop unused dependencies - #4506
Update JUnit dependencies - #4505
Fixes test for LiteFindingsReport - #4479
Remove outdated detekt suppression - #4468
Add test cases to RedundantSuspendModifier rule - #4430
Refactor MultilineLambdaItParameter rule - #4428
Formulate rule/naming descriptions consistently - #4419
Formulate rule/bugs descriptions consistently - #4418
Formulate rule/complexity descriptions consistently - #4417
Formulate rule/documentation descriptions consistently - #4416
Formulate rule/coroutines descriptions consistently - #4415
Formulate rule/style descriptions consistently - #4414
Formulate rule/exceptions descriptions consistently - #4413
Formulate rule/performance descriptions consistently - #4411
Make MultiRuleCollector.kt consistent with the DoubleMutabilityForCollection rule - #4405
Add test for nested SwallowedException - #4404
Disable CI for Windows & JDK8 - #4403
Improve test description in ForEachOnRangeSpec.kt - #4402
Don't define classes on default package - #4401
Config file in directory test - #4398
Remove unnecessary map lambda in test code - #4397
Improve AnnotationExcluder tests - #4368
Enable UseAnyOrNoneInsteadOfFind - #4362
Enable ForbiddenMethodCall - #4334

See all issues at: 1.20.0

1.19.0 - 2021-11-29

Please welcome the next upcoming stable release of detekt: 1.19.0 🎉 This release is coming with a lot of new features, new rules, evolution in the API and stability improvements.

Specifically, we've shipped some features that will allow you to better adapt detekt to run on codebases that are using JetPack compose with features such as ignoreAnnotated and ignoreFunction.

Notable Changes

We now offer an ignoreAnnotated configuration key that you can use on all your rules to suppress findings if inside an annotated block (e.g. @Composable) - #4102 and #4241
Similarly, we now offer also an ignoreFunction configuration key that you can use to suppress findings if inside a function with a given name - #4148
Report configuration is changing in the Gradle plugin. The reports extension on the detekt extension has been deprecated. See the Migration section below for steps to migrate to the new recommended configuration - #3687
The ExplicitCollectionElementAccessMethod rule is now a type-resolution only rule - #4201
The InvalidPackageDeclaration rule has been split to create the MissingPackageDeclaration rule - #4149
The ForbiddenComment rule now offers a customMessage configuration key - #4126
We bumped ktlint and updated the default enabled rules to mirror what ktlint is doing - #4179
Added a new LambdaParameterNaming rule, to enforce a naming convention of parameter inside lambdas - #4147
Added a new InjectDispatcher rule, to check if dispatchers are injectable - #4222
Added a new ConsoleReport format - #4027
Gradle: We added the --auto-correct cmdline option to gradle tasks - #4202
Gradle: We removed the afterEvaluate wrapper from the Android and KMM plugin - #4159 and #4271
We now test against Java 17 and stopped testing against Java 16 - #4136
Remove library specific configurations like Jetpack Compose and Dagger from the default config - #4101
Remove detekt-bom module - #4043
Use reference in fallback property delegate - #3982

Migration

Configuring reports in the Gradle plugin should be done at the task level instead of at the extension (or global) level. The previous recommendation resulted in the report output for multiple tasks overwriting each other when multiple detekt tasks were executed in the same Gradle run.

Before this release the recommended way to configure reports was using the detekt extension:

detekt {
    reports {
        xml {
            enabled = true
            destination = file("build/reports/detekt/detekt.xml")
        }
    }
}

This meant all detekt tasks would output the report to the same destination. From this detekt release you should enable and disable reports for all tasks using the withType Gradle method:

// Kotlin DSL
tasks.withType<Detekt>().configureEach {
    reports {
        xml.required.set(true)
    }
}

// Groovy DSL
tasks.withType(Detekt).configureEach {
    reports {
        xml.required.set(true)
    }
}

To customize the report output location configure the task individually:

tasks.detektMain {
    reports {
        xml {
            outputLocation.set(file("build/reports/detekt/customPath.xml"))
            required.set(true) // reports can also be enabled and disabled at the task level as needed
        }
    }
}

Changelog

trim values when parsing the baseline - #4335
Fix #4332 by widening the scope to all JDKs - #4333
Bugfix provided by #4225 needs wider scope - #4332
Avoid false positives in MemberNameEqualsClassName - #4329
Add two new config steps for Compose - #4322
Set DetektJvm task source with SourceDirectorySet instead of file list - #4151
Add documentation about how to configure Baseline task with type resolution - #4285
Remove kotlin-gradle-plugin-api from runtime classpath - #4275
Use appropriate annotations on source properties in Gradle tasks - #4264
Replace usage of deprecated ConfigureUtil - #4263
Fix test failure of ReportMergeSpec - #4262
Revert "Remove afterEvaluate wrapper (#4159)" - #4259
ExplicitCollectionElementAccessMethodSpec: does not report methods that is called on implicit receiver - #4256
UnusedPrivateMember: fix false positive with operator in - #4249
Introduce UseAnyOrNoneInsteadOfFind rule - #4247
OptionalWhenBraces: fix false negative for nested when - #4246
Handle MultiRules in Suppressors - #4239
Fix UselessCallOnNotNull rule - #4237
Make detekt a bit less noisy when mixing java and kotlin files - #4231
Workaround for JDK 8 instability when reading config - #4225
Define FunctionSignature - #4176
ForbiddenMethodCall: report overriding method calls - #4205
ObjectLiteralToLambda: fix false positive when using Java interfaces with default methods - #4203
Unit tests for TooGenericExceptionThrown - #4198
Display correct --jvm-target values when using --help flag - #4195
Improved MaximumLineLength documentation - #4188
Report NewLineAtEndOfFile source location at end of file - #4187
#4169 OutdatedDocumentation rule - #4185
Don't report on platform types in NullableToStringCall - #4180
Fix #4140: Allow Bazel based tests to run with string test input - #4170
Improve ForbiddenMethodCall documentation - #4166
Report SwallowedException on catchParameter - #4158
Enable binary compatibility validator for detekt-test and detekt-test-api - #4157
Fix issues with Elvis operator in UnconditionalJumpStatementInLoop - #4150
Improve documentation for naming rules - #4146
Disable UnsafeCallOnNullableType on tests - #4123
Remove annotations from LateinitUsage noncompliant block - #4100
UnnecessaryAbstractClass: false positive when the abstract class has internal/protected abstract members - #4099
Deprecate DefaultContext - #4098
Fix confusing message when breaking the MultilineLambdaItParameter rule - #4089
Remove deprecated KotlinExtension - #4063
Add an alias for FunctionMinLength/FunctionMaxLength rules to be more descriptive - #4050
fix report path, default path is reports/detekt/... - #4034
Fix TextLocation of Indentation rule - #4030
detekt-bom is going away after 1.18.0 - #3988
UnderscoresInNumericLiterals acceptableDecimalLength is off by one - #3972
Create rule set configurations in a safe way - #3964
Remove UnnecessarySafeCall safeguard against ErrorType - #3439

Dependency Updates

Update dependency org.jetbrains.kotlinx:kotlinx-coroutines-core to v1.5.2 - #4302
Update dependency io.mockk:mockk to v1.12.1 - #4297
Update dependency com.android.tools.build:gradle to v4.2.2 - #4296
Gradle Publishing Plugin 0.17.0 - #4270
Shadow 7.1.0 - #4269
Dokka 1.5.31 - #4268
Binary Compatibility Validator 0.8.0 - #4267
Reflections 0.10.2 - #4266
Upgrade to Gradle 7.3 - #4254
Dokka 1.5.30 - #4114
Kotlin 1.5.31 - #4113
Update dependencies - #4065

Housekeeping & Refactorings

Simplify YamlConfig - #4316
Move tests to the correct module - #4314
Don't hide null issues - #4313
Add functional test for type resolution for JVM - #4307
Minor typo fix and code refactoring - #4284
Improve Tests of UnnecesaryLet - #4282
Fix typo in UnnecessaryLet - #4281
Fix typo in Gradle lib definition - #4255
Rename DoubleMutabilityInCollectionSpec to DoubleMutabilityForCollectionSpec - #4251
Simplify conditional checks to improve coverage - #4221
Refactor NoTabs to remove DetektVisitor - #4220
Fix typos and grammar in rule descriptions - #4219
Use Kotlin's ArrayDeque implementation - #4218
Update Kotlin docs URL - #4217
Report UntilInsteadOfRangeTo for 'rangeTo' calls - #4212
Add tests for merging reports - #4199
Setup Gradle functional tests - #4074
GitHub Actions cache fixes - #3723
Simplify where casts used unnecessarily - #4213
Don't specify Gradle Enterprise Gradle Plugin version - #4210
Fix baserule import in tests - #4189
Run CLI sanity checks with Gradle - #4186
Use Codecov GitHub Action to upload coverage - #4184
Enable ParameterListWrapping rule on detekt codebase - #4178
Add test cases for MagicNumber - #4152
Fix FunctionParameterNamingSpec - #4145
Address feedback on #4139 - #4143
Don't skip tests that now pass - #4142
Fixes for Kotlin 1.6.0-M1 - #4139
Don't unnecessarily propogate opt-in requirement - #4116
Drop junit-platform-launcher dependency - #4115
Ensure detekt-tooling public API is stable - #4112
Fix globing typo - #4107
Rename and split ValidateConfig files - #4105
Dynamic deprecation - #4104
Fix indent issues with continuation indent - #4103
Refactor so detekt-gradle-plugin can be added as an included build - #4094
Migrate buildSrc to composite build - #4090
Fix broken applySelfAnalysisVersion task - #4082
Convert DetektJvmSpec to use ProjectBuilder - #4075
Upscale JVM settings - #4057
Gradle 7.2 - #4056
Verify at compile time that issue id matches rule name - #4047

See all issues at: 1.19.0

1.18.1 - 2021-08-30

This is a point release for detekt 1.18.0 containing bugfixes for problems that got discovered just after the release.

Notable Changes

MultiRule should pass correctly the BindingContext - #4071
Allow active, excludes and includes in the rule-set configuration - #4045
Remove Error from ThrowingExceptionsWithoutMessageOrCause because is a common name - #4046
Fix issue IDs for ReferentialEquality and DoubleMutability - #4040

See all issues at: 1.18.1

1.18.0 - 2021-08-12

We're more than excited to introduce you a next stable release of detekt: 1.18.0 🎉 This release is coming with a lot of changes, new rules, evolution in the API and stability improvements.

We want to take the opportunity to thank our contributors for testing, bug reporting and helping us release this new version of detekt.

Notable Changes

We've added two new rules: AvoidReferentialEquality and BooleanPropertyNaming (see #3924 and #3795)
This version of detekt ships with Kotlin 1.5.21, and we're compiling with apiVersion set to 1.4 - #3956 and #3852
The minimum version of Gradle to use Detekt Gradle Plugin is now 6.1 - #3830
This version of detekt has been tested against Java 16 - #3698
We fixed a long-standing bug related to parallel execution (#3248) - #3799 and #3822
We now use multi-line format for list options in the default detekt config file - #3827
The rule VarCouldBeVal has been updated and now works only with type resolution to provide more precise findings - #3880
We removed all the references to Extensions.getRootArea that is now deprecated from our codebase. This was affecting users with sporadic crashes. - #3848
For detekt rule authors: We created a Github Template that you can use to bootstrap your custom rule project: detekt-custom-rule-template. You can use JitPack to host it and share your rule easily with other members of the community.
For detekt rule authors: We finished the rework to use the annotations instead of kdoc tags in rules. Specifically configurations must be configured using @Configuration while auto-correction capability should be specified with the @AutoCorrectable annotation #3820.

Migration

We renamed the input property inside the detekt{} extension of the Gradle plugin to source. The input property has been deprecated, and we invite you to migrate to the new property (see #3951)

// BEFORE
detekt {
    input = files(...)
}

// AFTER
detekt {
    source = files(...)
}

For all rule authors: When accessing a config value within a rule, using valueOrDefault and valueOrDefaultCommaSeparated is no longer recommended. While both will remain part of the public api, they should be replaced by one of the config delegates (see #3891). The key that is used to lookup the configured value is derived from the property name.

/* simple property */
// BEFORE
val ignoreDataClasses = valueOrDefault("ignoreDataClasses", true)
// AFTER
val ignoreDataClasses: Boolean by config(true)

/* transformed simple property */
// BEFORE
val ignoredName = valueOrDefault("ignoredName", "").trim()
// AFTER
val ignoredName: String by config("", String::trim)

/* transformed list property */
// BEFORE
val ignoreAnnotated = valueOrDefaultCommaSeparated("ignoreAnnotated", listOf("Inject", "Value"))
        .map(String::trim)
// AFTER
val ignoreAnnotated: List<String> by config(listOf("Inject", "Value")) { list -> 
    list.map(String::trim) 
}

For all rule authors: The types ThresholdRule and LazyRegex have been marked as deprecated and will be removed in a future release. Please migrate to config delegates.

/* ThresholdRule */
// BEFORE
class MyRule(config: Config, threshold: Int = 10) : ThresholdRule(config, threshold) {
    // ...
}
// AFTER
class MyRule(config: Config) : Rule(config) {
    private val threshold: Int by config(10)
    // ...
}

/* LazyRegex */
// BEFORE
private val allowedPattern: Regex by LazyRegex("allowedPatterns", "")
// AFTER
private val allowedPattern: Regex by config("", String::toRegex)

For custom rule authors: This will be the last version of detekt where we publish the detekt-bom artifact. This change should not affect anyone. If it affects you, please let us know.

Changelog

[KMP] Fix resolution of Android test classpaths - #4026
Sort config lists - #4014
Multiplatform tasks should not depend on check - #4025
mark configWithFallback as unstable - #4028
UseDataClass: fix false positive on value classes - #4016
ImplicitUnitReturnType: don't report when expression body is 'Unit' - #4011
Fix false positive with UnusedPrivateMember on parameter of a protected function - #4007
ClassNaming: Don't treat Kotlin syntax ` as part of class name - #3977
IgnoredReturnValue: fix false negative when annotation is on the class - #3979
NoNameShadowing: fix false positive with nested lambda has implicit parameter - #3991
UnusedPrivateMember - added handling of overloaded array get operator - #3666
Publish bundled/Shadow JAR artifact to Maven repos - #3986
EmptyDefaultConstructor false positive with expect and actual classes - #3970
FunctionNaming - Allow factory function names - fix #1639 - #3973
EndOfSentenceFormat - Fix #3893 by only calling super.visit once - #3904
UndocumentedPublicFunction: don't report when nested class is inside not public class #3962
Fail with a meaningful error message for invalid boolean - #3931
UndocumentedPublicProperty and UndocumentedPublicFunction should include objects - #3940
Fix exclusion pattern for InvalidPackageDeclaration - #3907
Allow else when {...} in MandatoryBracesIfStatements rule - #3905
Remove unnecessary constant declaration - #3903
Check bindingContext only once in MemberNameEqualsClassName - #3899
LongMethod: add 'ignoreAnnotated' configuration option - #3892
Fix Deprecation rule message - #3885
Improve LongParameterList rule by supporting ignoring annotated parameters - #3879
OptionalUnit: fix false positive when function initializer is Nothing type - #3876
UnnecessaryParentheses: fix false positive for delegated expressions - #3858
Fix UnnecessaryLet false positive in inner lambdas - #3841
Fix false positive for UnusedPrivateMember - Backtick identifiers - #3828
Properly apply test excludes for comments - #3815
Fix generation issues around (deprecated) list properties - #3813
Update the implementation of ClassOrdering to handle false negatives - #3810
[comments] Do not exclude tests globally - #3801
UnnecessaryLet: report when implicit parameter isn't used - #3794
NoNameShadowing: don't report when implicit 'it' parameter isn't used - #3793
Fix ModifierOrder to support value class - #3719
Remove inline value class to stay compatible with Kotlin 1.4 API - #3871
[FunctionNaming] Revert annotations that are ignored by default - #3948
Android: add javac intermediates to classpath - [#3867]((https://github.com/detekt/detekt/pull/3867)
Revert "Android: add javac intermediates to classpath (#3867)" - [#3958]((https://github.com/detekt/detekt/pull/3958)
Use annotations to configure rules in detekt-rules-exceptions - #3798
Use @Configuration in detekt-rules-style - #3774
Use annotations to configure rules in custom-checks - #3773
Use @Configuration for rules-errorprone - #3772
Use annotation to configure rules in rules-empty - #3771
Use annotation to configure rules in rules-documentation - #3770
Use annotations to configure rules in rules-naming - #3769
Use annotations to configure rules in rules-complexity - #3768
Move formatting rules to @Configuration - #3847

Dependency Updates

Bump Kotlin to 1.5.21 - #3956
Revert "Bump Kotlin to v1.5.20" - #3941
Bump Kotlin to v1.5.20 - #3921
Kotlin 1.5.10 - #3826
Update assertj to v3.20.2 - #3912
Update snakeyaml to v1.29 - #3911
Bump byte-buddy from 1.11.2 to 1.11.5 - #3886
Bump byte-buddy from 1.11.1 to 1.11.2 - #3872
Bump byte-buddy from 1.11.0 to 1.11.1 - #3861
Update mockk to 1.12.0 - #3937

Housekeeping & Refactorings

Enable UnnecessaryLet rule for detekt code base - #4024
enable PreferToOverPairSyntax rule for detekt code base - #4023
Add IllegalArgumentException and IllegalStateException to ThrowingExceptionsWithoutMessageOrCause - #4013
enable more potential-bugs rules for detekt code base - #3997
enable more exception rules for detekt code base - #3995
Enable UseOrEmpty for detekt code base - #3999
enable those rules from the style rule set that have not violation or obvious fixes - #3998
Enable more rules from naming rule set for detekt code base - #3996
Enable UseEmptyCounterpart for detekt code base - #4000
enable coroutine rules for detekt code base - #3994
Remove "plugin" suffix from version catalog aliases - #3987
Fix ClassCastException in test on java 11 openjdk9 - #3984
Activate IgnoredReturnValue on detekt code base - #3974
Add missing test in FunctionNaming - #3976
Fix trunk compilation - #3968
Reformat internal detekt.yml using multi line lists - #3936
Increase memory available to gradle integration test daemon - #3938
Avoid empty lines when running detekt with type resolution - #3909
Fix java.lang.ClassCastException is reading default yaml config - #3920
Refactor + rename util function inside MandatoryBracesIfStatement rule - #3908
Rename Tests to Spec - #3906
verify that no rule is configured with kdoc tags - #3870
Setup FOSSA - #3836
jvmTarget can't be null - #3818
Add test for ruleset provider configuration - #3814
Merge JaCoCo coverage reports the "right" way - #3650
Update outdated Gradle plugin documentation regarding source files - #3883
Make documentation more precise about how rules are enabled - #3889
Rename MapGetWithNotNullAsserSpec to follow test convention - #3878
Remove custom assertions that check kdoc of rules - #3859
Avoid overlapping outputs - #3790
Revert "Avoid overlapping outputs" - #3943

See all issues at: 1.18.0

1.17.1 - 2021-05-19

Notable Changes

This is a patch release for detekt 1.17.0 including fixes that we considered worth a point release.

Specifically, we're reverting a change on our Gradle Plugin. The original change #3655 resulted in several false positives when using rules with Type Resolution on Java/Kotlin mixed codebases.

Moreover we included a couple of false positive fixes for NoNameShadowing and UnnecessaryLet

Changelog

Revert "Noisy gradle (#3655)" - #3792
NoNameShadowing: don't report when implicit 'it' parameter isn't used - #3793
UnnecessaryLet: report when implicit parameter isn't used - #3794

1.17.0 - 2021-05-15

Notable Changes

We're introducing our new Project logo :). See #3726
This release allows you to replace your jcenter() dependencies with mavenCentral() given that our dependency on kotlinx.html migrated to Maven Central - See #3455
We now introduced the src/test/java and src/test/kotlin by default for the plain detekt Gradle task. If you use that task, you might notice rule reports in your test sourceset. See #3649
We now default the baseline file to detekt-baseline.xml so you don't have to specify it manually. You can revert the previous behavior by setting the baseline to null - See #3619 and #3745
We enabled the SARIF output format by default - See #3543
We're introducing annotations to provide metadata to rules, such as @ActiveByDefault, @Configuration and @RequiresTypeResolution - See #3637 #3592 and #3579

Changelog

Fix crash for DontDowncastCollectionTypes on Synthetic types - #3776
We don't need to talk about jcenter anymore at our docs - #3755
Skip publishing for detekt-cli shadowRuntimeElements variant - #3747
Set the org.gradle.dependency.bundling attribute to external - #3738
Support triple quoted strings in default value of config delegate - #3733
Properly populate versions.properties - #3730
We have a logo :) - #3726
[UndocumentedPublicProperty] Allow inline comments for properties in primary constructor as documentation - #3722
MultilineLambdaItParameter: don't report when lambda has no implicit parameter references - #3696
Fix false positives for UnnecessaryFilter - #3695
Add support for transformer function in config property delegate - #3676
Add support for fallback property - #3675
Ignore actual members in UnusedPrivateMember - #3669
NamedArguments rule: fix false positive with trailing lambda - #3661
Add DeprecatedBlockTag rule - #3660
Noisy gradle - #3655
Drop support to Gradle 5 - #3647
Add MayBeConstant as alias for MayBeConst - #3644
[ThrowingExceptionInMain][ExitOutsideMainfix] fix for KtNamedFunction.isMainFunction() - #3641
Fixing IllegalArgumentException in ForbiddenMethodCall rule for Intersection type parameters - #3626
Replace getJetTypeFqName with fqNameOrNull extension - #3613
New Rule: ObjectLiteralToLambda - #3599
[MemberNameEqualsClassName] Support factory exemption for generic classes - #3595
Refactor Analyzer so that RuleSetProvider.instance is only called once - #3585
SarifOutputReportSpec: Correctly detect Windows root directory on local development machine - #3584
Replace @since KDoc tag with @SinceDetekt - #3582
Simplify code in RedundantSuspendModifier rule - #3580
Revert "Refactor Analyzer so that RuleSetProvider.instance is only called once" - #3578
fix error message -> buildUponDefaultConfig instead of buildOnDefaultConfig - #3572
UnnecessaryApply: fix false positive when lambda has multiple member references - #3564
Switch SARIF report off jackson - #3557
Fix rules not appearing in the sarif output - #3556
Refactor Analyzer so that RuleSetProvider.instance is only called once - #3555
New Rule: DoubleMutabilityForCollection - #3553
Adds a ForbiddenSingleExpressionSyntax rule - #3550

Dependency Updates

Update to Gradle 7.0.1 - #3760
Update Shadow plugin to 7.0.0 - #3759
Upgrade to AGP 4.2.0 - #3744
JaCoCo 0.8.7 - #3739
Upgrade to GitHub-native Dependabot - #3716
Upgrade to Gradle 7 - #3689
Bump com.gradle.plugin-publish from 0.13.0 to 0.14.0 - #3654
Bump kotlin-reflect from 1.4.0 to 1.4.32 - #3627
Upgrade to ktlint 0.41.0 - #3624
Update to Kotlin 1.4.32 - #3606
Bump AGP from 4.1.2 to 4.1.3 - #3589
Bump mockk from 1.10.6 to 1.11.0 - #3588

Housekeeping & Refactorings

Fix document - #3765
Fix kdoc link on blog navigation - #3761
Upload any heap dumps produced during CI build - #3758
Always run warningsAsErrors on CI - #3754
Clean ci - #3753
Revert "Set the org.gradle.dependency.bundling attribute to external" - #3750
Enable Gradle's type-safe project accessors - #3742
Enable Gradle's version catalogs - #3741
Ignore gradle plugin in codecov - #3740
Update config file due to invalid argument - #3735
Skip Multiplatform iOS tests if XCode is not configured - #3734
Specify Java language level in module plugin - #3732
Don't run unnecesary tasks - #3725
Remove --stacktrace now that we have scan - #3724
Drop JCenter usage from detekt's own build - #3711
Publish build scans for all CI builds - #3710
Remove deprecated kotlin-dsl Gradle config option - #3709
Update to setup-java@v2 - #3704
(Try to) improve CI build reliability - #3703
Simplify UpdateVersionInFileTask - #3693
Fix compilation issue in :detekt-rules-style:compileTestKotlin - #3691
Fix detekt failure in CI - #3674
Refactor UnusedPrivateMemberSpec - #3667
Warnings as errors - #3646
Skip ios tests if no ci - #3635
Fix tests - #3634
Include detekt-rules on CLI runtime classpath - #3625
Improve tests from :detekt-gradle-plugin - #3623
Improve generator test coverage - #3622
Improve tests - #3618
Apply more formatting rules to our code - #3615
Add negative test case for requiresTypeResolution - #3614
Simplify Gradle config - #3612
Decouple Gradle projects - #3611
Add --stacktrace to help triage CI flakiness - #3604
Fix CI failure for deploy-snapshot - #3598
Improve Deprecation and Documentation for allRules - #3596
Update files to support main branch in order to remove oppressive language - #3586
Format test code for RedundantSuspendModifierSpec - #3581
Gradle tweaks - #3575
Support Gradle config cache in detekt's build - #3574
Show information from @active in the website - #3569
Update rule doc for SwallowedException config - #3547
Markdown: Reintroduce double-backticks for inline code rendering - #3545

See all issues at: 1.17.0

1.16.0 - 2021-03-10

Changelog

Bump jcommander from 1.78 to 1.81 - #3530
Swallow exception fixes - #3525
Merge SARIF reports - #3522
Revert Update Kotlin to version 1.4.31 - #3521
Fix not being able to override insertFinalNewLine - #3515
Allow opt-out configuring detekt android and multiplatform - #3511
Gradle Plugin tests should access also Maven Local - #3510
Update Kotlin to version 1.4.31 - #3509
Fix SARIF validation failure - #3507
Remove off importing android util - #3506
Adding support for full method signatures in ForbiddenMethodCall - #3505
Add UnusedUnaryOperator rule - #3499
New rule: disallow to cast to nullable type - #3497
Merge XML report output - #3491
Allow using regular expressions when defining license header templates - #3486
Add UnreachableCatchBlock rule - #3478
Add NoNameShadowing rule - #3477
Fix false negative "UselessCallOnNotNull" with list.isNullOrEmpty() - #3475
Add UseOrEmpty rule - #3470
Add UseIsNullOrEmpty rule - #3469
Add support to Kotlin Multiplatform Projects - #3453
Fix false positives for MultilineLambdaItParameter.kt - #3451
Dont generate baseline if empty - #3450
Silence IndexOutOfBoundsException in getLineAndColumnInPsiFile() - #3446
Add new ObjectExtendsThrowable rule - #3443
Add allRules and deprecate failFast in gradle tasks - #3431
Add two missing ktlint rules - #3430
Don't fail if baseline doesn't exist in PlainDetekt - #3429
Fix False Positive on UnnecessarySafeCall - #3419
Fix false positive for UnusedPrivateMember with expect on objects - #3417
Fix code samples for UnnecessarySafeCall - #3416
New rule: DontDowncastCollectionTypes - #3413
Fix documentation in UnnecessarySafeCall - #3412
Bump gradle from 4.1.1 to 4.1.2 - #3405
Introduce --max-issues flag for cli - #2267 - #3391
Ignore actual functions in FunctionOnlyReturningConstant (#3388) - #3390
Fix hyperlink for elements of the type 'KtFile' - #3386
Update gradle doc to show table of contents correctly - #3383
Update cli doc to show table of contents correctly - #3382
Fix EmptyConfig making all rules active in production - #3380
Empty custom config enables rules disabled by default - #3379
Add setup-detekt action to README - #3373
GlobalClassLoaderCache: move call to getFiles out of synchronized block - #3370
Check for === instead of == - #3363
Filter existing files in classpath - #3361
Suppress RedundantVisibilityModifierRule if explicit API mode enabled - #3358
Add the final new line in the baseline again - #3351
[Security] Bump nokogiri from 1.10.10 to 1.11.1 in /docs - #3348
Remove trailing newline after ending IndentingXMLStreamWriter - #3347
[Security] Bump nokogiri from 1.10.10 to 1.11.0 in /docs - #3343
Add UnnecessaryFilter rule - #3341
Reorganize docs for the configuration file - #3337
Add new rule SleepInsteadOfDelay - #3335
Update Android Gradle Plugin to 4.1.1 - #3328
Support relative output paths - #3319
Fix runLastOnRoot being empty in KtLintMultiRule - #3318
Ensure binary-compatibility with previous versrions - #3315
Fix reports not propagated to detekt task with type resolution - #3313
Support configurable severity per ruleset/rule in XML and Sarif output - #3310
Configure default excludes for InvalidPackageDeclaration - #3305
Remove exceptions of Library rules - #3304
Move the questions to discussions - #3300
Magic number extension functions - #3299
NamedArguments: fix false positive with varargs - #3294
NamedArguments rule: false positive with varargs - #3291
NamedArguments with java code false positive - #3289
Upgrade ktlint to 0.40.0 - #3281
False positive "Unconditional loop jump" - #3280
ForbiddenComments don't report TODO: in KDoc - #3273
Add MultilineLambdaItParameter rule - #3259
Update Kotlin to 1.4.21 - #3254
Introduce --all-rules flag - #3253
Enable more rules by default - #3229
Running multiple Detekt tasks concurrently may cause deadlock - #3047
detektMain is noisy "Ignoring a file detekt cannot handle" - #3019
Configure default excludes for InvalidPackageDeclaration - #2539
Hyperlink to error inside Android studio - #2340
Align cli flags and defaults with other analysis tools - #2267

Housekeeping & Refactorings

SwallowedException: Slightly improve the documentation - #3527
Fix Markdown rendering of multiple default values - #3526
Move gradle testkit test back to test/ - #3504
Add documentation on suppressing formatting rules - #3503
Change DetektMultiplatform from unit test to gradle testkit integrati… - #3500
Bump com.gradle.plugin-publish from 0.12.0 to 0.13.0 - #3494
Refactor Gradle integration tests - #3489
Refactor gradle integration test - #3487
Prepare detekt 1.16.0-RC2 - #3485
Bump mockk from 1.10.5 to 1.10.6 - #3473
Upgrade to Gradle 6.8.2 - #3468
Correct maxIssues documentation - #3456
Bump junit-platform-launcher from 1.7.0 to 1.7.1 - #3454
Don't use deprecated functions - #3452
Bump github-pages from 210 to 211 in /docs - #3434
Add documentation for SARIF, severity and relative path - #3433
Refactor uploading SARIF to report without overriding the previous step - #3432
Fix githubRelease skipping assets - #3427
Prompt bug reporters to attach gradle scan - #3422
Fix invalid link in detekt html report - #3421
Prepare 1.16.0-rc1 release - #3411
Add full qualified name in documentation - #3410
Bump kotlinx-coroutines-core from 1.3.8 to 1.4.1 - #3407
Fix deploy website on master - #3406
Bump mockk from 1.10.4 to 1.10.5 - #3404
Bump assertj-core from 3.18.1 to 3.19.0 - #3403
Bump github-pages from 209 to 210 in /docs - #3401
Update dangling URLs pointing to the old website - #3400
Auto generate CLI options in docs - #3399
Update documentations on snapshots - #3393
Fix maven publish - #3392
Fix build script to avoid jvm plugin applied - #3389
Disable parallel test discovery; we already use Grade workers for max parallelism - #3387
Use more fluent assertions - #3381
Refactor orders of repositories - #3376
Add a test for UndocumentedPublicClass and fun interfaces - #3374
Refactor build.gradle.kts in detekt-gradle-plugin - #3371
Gradle to 6.8 - #3362
Integrate SARIF report with Github code scanning - #3359
Refactor integration test for detekt-gradle-plugin - #3356
Improve gradle plugin - #3354
Remove checkNotNull - #3352
Generate API validation for detekt-psi-utils - #3338
recover binary compatibility with 1.15.0 - #3336
Refactor tests in detekt-gradle-plugin - #3333
Fix failing website deployment on master - #3332
The output of updateVersion should not depend on the OS that executes it - #3330
Reduce visibility - #3326
Refactor XmlOutputFormatSpec - #3325
Simplify our buildSrc - #3322
Apply binary compatibility plugin to detekt - #3320
Add KDoc for convoluted PathFilters.isIgnored - #3312
Don't mix kotlin 1.3 and 1.4 - #3309
Allow to overwrite in the task moveJarForIntegrationTest - #3308
Remove unnecessary .trimIndent() - housekeeping - #3307
Fix typo - #3301
General housekeeping - #3298
Inline UnconditionalJumpStatementInLoop case files - #3296

See all issues at: 1.16.0

1.15.0 - 2020-12-18

Notable Changes

detekt 1.15.0 bundles Kotlin 1.4.10.
You may experience some known issues when your project already uses 1.4.20

#3248 and #3282.

In addition to many rule improvements, there are also new ones:

RedundantHigherOrderMapUsage
UseIfEmptyOrIfBlank

We added documentation on how to configure type resolution.
Only the rules marked with Requires Type Resolution (on the website documentation or @requiresTypeResolution in code) are executed (see here for example).

detekt now supports SARIF as an output format. In the future you will be able to upload this format to GitHub and see detekt issues right in your pull requests.

Migration

We removed implementations of the Config interface from the public api.
It was first deprecated and then moved to internal package earlier this year.
Rule authors can use TestConfig(Map) or yamlConfig(String) from detekt-test to test their rules.

Move internal config api to core module - #3163

Changelog

NamedArguments: fix false positive with java method call - #3290
Prepare 1.15.0 rc2 - #3286
UnconditionalJumpStatementInLoop: don't report a return after a conditional jump - #3285
Add MuseDev to the list of integrations - #3284
Fix ForbiddenComment rule not checking for KDoc - #3275
ForbiddenComments don't report TODO: in KDoc - #3273
Add IntelliJ platform plugin template integration to readme - #3270
Bundle new sarif output format by default - #3268
Add a test for UnusedImports with annotations used as attributes #3246 - #3255
Add documentation page on type resolution - #3225
ThrowsCount rule: fix false positive with nested function - #3223
False positive in ThrowsCount rule - #3222
Refactor UnsafeCallOnNullableType rule - #3221
Fix false negatives in UnreachableCode rule - #3220
False negatives in UnreachableCode rule - #3219
Refactor RedundantElseInWhen to use compiler warning - #3214
NullableToStringCall: fix false negative with safe qualified expression - #3213
False negative in NullableToStringCall - #3211
NullableToStringCall: fix false negatives with qualified expression - #3198
False negatives in NullableToStringCall - #3196
Check for presence of null case in MissingWhenCase rule - #3194
Throw error instead of logging as error in analysis phase - #3193
Make kotlinc adapted rule comments internal - #3190
MissingWhenCase false negative with nulls - #3189
Check for static imports in unused imports rule - #3188
Add allowElseExpression configuration for MissingWhenCase rule - #3187
Add UseIfEmptyOrIfBlank rule - #3186
Fix detektBaseline task filtering .java files - #3185
Internal exception should fail the gradle task - #3183
Add RedundantHigherOrderMapUsage rule - #3182
Fix false negative in IgnoredReturnValue - #3179
Fix false positive when to is used to create a pair within a function - #3178
False Positive PreferToOverPairSyntax - #3177
Suppress RedundantVisibilityModifierRule if explicit API mode enabled - #3175
Hardcode default values - #3171
False negative in IgnoredReturnValue - #3170
Fix false positive in IgnoredReturnValue - #3169
Duplicate deprecated KtLint methods - #3168
Introduce NamedArguments rule - #3167
Add JSON Schema documentation - #3166
Fix MaxLineLengthSuppressed ignoring @Suppress annotation on class - #3164
Use the properties syntax in Gradle docs - #3158 - #3161
Fix rule LibraryCodeMustSpecifyReturnType - #3155
Update README to mention config auto-complete - #3143
@Suppress("MaxLineLength") not working for simple block comment inside class - #3136
Support sarif as a report type - #3045 - #3132
UnusedImports false positive for enums in annotation attributes (with type resolution) - #3131
Unable to generate detektMain baseline for UnsafeCallOnNullableType violations in Android (mixed Kotlin + Java) modules - #3130
Suppress RedundantVisibilityModifierRule if explicit API mode enabled - #3125
SARIF export support - #3045
IgnoredReturnValue false positives - #3043
Offset calculation in KtLint deprecated/made private - #3021
Map { it } must return an error - #2975
Upload detekt-formatting plugin to Github releases next to precompiled cli binary - #2927
Add a rule to flag places where ifBlank and ifEmpty can be used - #2840
Remove hardcoded default values from rules - #2597
Doc: type and symbol solving - #2259
Suggestion: LongParameterList rule but on method call if named argument is not used - #1007

Housekeeping & Refactorings

Standardize "active" constant - #3292
Update Spek to v2.0.15 - #3287
Reformat code indentation in ReturnFromFinallySpec.kt - #3278
Inline ReturnFromFinally report message text - #3277
Simplify ReturnFromFinally check for finally expressions - #3276
CI with Java 15 - #3262
Enabled publishing of sha256 and sha512 signatures - #3249
Remove default config entries in detekt.yml - #3239
Fix grammar in configuration guide - #3238
Exclude detekt:LargeClass rule in test sources - #3237
Release 1.15.0 rc1 - #3236
Remove unused format function in RuleExtensions - #3234
Update spek to v2.0.14 - #3231
Remove already activated rules from detekt.yml - #3230
Fix broken website redirects - #3227
Remove unused resources from the website - #3226
Simplify EqualsOnSignatureLine rule - #3224
Remove unnecessary suppression in main - #3217
Simplify MissingWhenCase by removing an unnecessary alternative path - #3216
Refactor HasPlatformType rule - #3210
Remove Suppress annotation from ArrayPrimitive - #3209
Refactor UselessCallOnNotNull rule - #3208
Refactor MissingWhenCase - #3207
Refactor NullableToStringCall - #3206
Refactor RedundantElseInWhen - #3205
Refactor PreferToOverPairSyntax - #3204
Remove Suppress annotation from MagicNumber - #3203
Remove Suppress annotation from UnusedImports - #3202
Refactor FunctionNaming rule - #3201
Setup the website publishing pipeline - #3199
Improve code coverage for DefaultCliInvoker testing happy and error path - #3195
Make kotlinc adapted rule comments internal - #3192
Improve PreferToOverPairSyntax - #3181
Simplify PreferToOverPairSyntax check - #3180
Improves in IgnoredReturnValue - #3174
Move KtFileContent to FileParsingRule - #3173
Don't use deprecated onStart - #3172

See all issues at: 1.15.0

1.14.2 - 2020-10-20

Changelog

Do not report vararg arguments which are just passed to a vararg parameter - #3157
Simplify documentation - #3156
Respect inspection aliases ClassName, PackageDirectoryMismatch, RedundantVisibilityModifier - #3153
Change spek and assertj to compile only dependencies for detekt-test consumers - #3152
False positive performance SpreadOperator in case of pass-through vararg - #3145
ClassOrdering rule reports a list of errors - #3142
ClassOrdering only reports first misorder, not all misorders - #3141
UnusedPrivateMember: fix false positive with getValue/setValue operator functions - #3139
ClassOrdering reports a message describing the misorder - #3138
False positive UnusedPrivateMember for getValue, setValue operator functions - #3128
Add aliases to class and package Naming rules - #3124
Artifact detekt-test forces dependency constraining - #3082

Housekeeping & Refactorings

Fix two eager Regex creations in rules which may confuse users if this rules are inactive but evaluated - #3154
Update Gradle to 6.7 - #3148
Bump github-pages from 208 to 209 in /docs - #3135

See all issues at: 1.14.2

1.14.1 - 2020-09-30

Changelog

Write recipe to compare user and default config - #3065 - #3114
Improve description of AbsentOrWrongFileLicense rule - #3109
Report Unit returned by method implementations in interfaces - #3108
Change OptionalUnit to report Unit returned by method implementations in interfaces - #3099
1.13.0 changes to detektGenerateConfig - #3065
detekt 1.12.0 and org.springframework.boot 2.2.6.RELEASE clash - #3058

Housekeeping & Refactorings

Update mockk to 1.10.2 - #3113
Refactoring: Use indices syntax in loop - #3112
Specify type explicitly in DetektCreateBaselineTask - #3111
Refactoring: Class member can have private visibility - #3110
Fix kotlin-reflect problem for idea plugin - #3107

See all issues at: 1.14.1

1.14.0 - 2020-09-26

Notable Changes

New standard rules: ReplaceSafeCallChainWithRun, ClassOrdering, SuspendFunWithFlowReturnType
New experimental KtLint rules: AnnotationSpacing, ArgumentListWrapping

Changelog

Add additional classpaths to KtTestCompiler - #3101
New rule: SuspendFunWithFlowReturnType - #3098
Fix formatting issues have no absolute path - #3063 - #3097
Fix false positive (+= overload) in UnusedPrivateMember - #3094
Update RedundantVisibilityModifierRule to find redundant internal modifiers - #3092
New rule: ReplaceSafeCallChainWithRun - #3089
New rule: ClassOrdering - #3088
Use File.pathSeparator to split entries in classpath - #3084
Wrap new KtLint rules - #3083
Wrap KtLint AnnotationSpacingRule - #3081
Wrap KtLint ArgumentListWrappingRule - #3080
UnusedImports rule: fix false positives when type resolution is enabled - #3079
Move SNAPSHOT from artifactory to sonatype - #3076
Update KtLint to 0.39.0 - #3075
UnusedImports: Lots of false positives - #3074
Update dependency badge to maven central - #3072
Simplify reporting message for IgnoredReturnValue - #3068
Add ability to pass rootclasspaths to KtTestCompiler - #3066
MagicNumber rule: don't check Character, Boolean and null - #3064
KtLint formatting checks do not include full path in report - #3063
IgnoredReturnValue should only report name of method/function called - #3052

Housekeeping & Refactorings

Update jacoco with Java 15 support - #3105
Update project dependencies - #3104
Enable parallel spek test discovery - #3090
Update Gradle to 6.7-rc-2 - #3071
Update spek framework to 2.0.13 - #3070
Update kramdown dependency due to a vulnerability - #3069
Add test asserting the report message - #3061

See all issues at: 1.14.0

1.13.1 - 2020-09-13

Notable Changes

We now publish directly to maven central. The 1.13.0 release got corrupted and should not be used.

1.13.0 - 2020-09-07

Migration

This release drops several deprecations in detekt-api.

Changelog

Set modifier order based on Kotlin coding conventions - #3056
FunctionNaming: allow anonymous functions - #3055
FunctionNaming should ignore anonymous functions - #3054
Fix ModifierOrder for false positive reported by ModifierOrder when using fun interfaces - #3051
False positive reported by ModifierOrder when using fun interfaces - #3050
Fix PreferToOverPairSyntax exception - #3046
PreferToOverPairSyntax throws exceptions - #3044
Remove deprecated entity and location members - #3037
Respect configured config file when running the detektCreateConfig task - #3036
Remove last years api deprecations - #3035
UnusedImports rule: fix false negative when same name identifiers are imported and used - #3033
ForbiddenMethodCall: report operator calls - #3032
Improve documentation for Gradle repositories setup - #3030
how to use the type resolution to make ForbiddenMethodCall to check bigdecimal.equals using bigdecimal == bigdecimal? - #3029
Use lazy gradle APIs in docs - #3028
Implement option to turn config property deprecation warnings as errors - #3026
Fix RedundantSuspendModifier message - #3025
Print filtered paths in debug mode for easier bug tracing - #3022
Unused import not detected - #3020
Include reports and formatting features to the system test - #3018
detektGenerateConfig ignores detekt.config paramenter - #2565
Treat config property deprecations as errors - #2545
Print filtered paths in debug mode - #869

Housekeeping & Refactorings

Remove confusing annotation for UnusedImports rule - #3039
Remove obsolete signature workaround for formatting plugin - #3038
Upgrade to new dokka - #2931

See all issues at: 1.13.0

1.12.0 - 2020-08-25

Notable Changes

Kotlin 1.4 support
New rules: UseCheckNotNull, UseRequireNotNull, NonBooleanPropertyPrefixedWithIs
The Gradle plugin now requires at least Gradle 5.4. This aligns with Kotlin's Gradle plugin.
The Gradle plugin now supports configuration avoidance
The Gradle plugin now generates additional detekt tasks for Android projects
KtLint 0.38.1 support (via detekt-formatting)

Migration

ArrayPrimitive rule is more precise but requires type resolution now.
The deprecated customReports property of the Gradle plugin got removed.
Deprecated properties xmlReportFile, htmlReportFile, txtReportFile are now internal.

Note the default gradle detekt task does not run over test sources. To include test sources following setup can be used:

detekt {
    // ...
    input = objects.fileCollection().from(
        "src/main/java",
        "src/test/java",
        "src/main/kotlin",
        "src/test/kotlin"
    )
}

This does not apply to gradle detektTest. We encourage to also check test sources.
We will include test sources by default in detekt 1.15.0 or later.

Changelog

Consolidate working for Type Resolution - #3011
ArrayPrimitive rule: report variable/receiver types and factory methods - #3009
Add requiresTypeResolution annotation to UseCheckNotNull/UseRequireNotNull - #3008
Update kotlinx.html dependencies - #3007
Do not overwrite bintray publication - #3006
Update Ktlint to 0.38.0 - #3004
Add UseRequireNotNull/UseCheckNotNull rules - #3003
Workaround config - #3001
Replace require(x != null) with requireNotNull(x) - #2998
Minor Gradle plugin cleanup - #2997
detekt-gradle-plugin has two publishing configuration - #2996
Introduce @requiresTypeResolution to KDoc for rules - #2993
Fix support for Gradle configuration cache - #2992
Fix false positive for UnnecessaryLet with disabled type resolution - #2991
Deprecation: False positive with Kotlin 1.4.0 - #2990
False positive in UnnecessaryLet - #2987
Gradle plugin fixes - #2986
Remove deprecated customReports detekt task property - #2811 - #2944
Rename IsPropertyNaming to NonBooleanPropertyPrefixedWithIs? - #2819
Add automatic detekt tasks for Android Plugins - #2787

Housekeeping & Refactorings

Update Gradle to 6.6.1 - #3016
Run detekt with type resolution analysis on CI - #3015
Run Gradle Android tests conditionally when sdk path is defined - #3014
Fix documentation for NonBooleanPropertyPrefixedWithIs - #3012
Run detekt on all test sources - #3010
Do not publish test fixture; removing warning - #3005
Implement custom rule to check spek test discovery performance issues - #2954

See all issues at: 1.12.0

1.12.0-RC1 - 2020-08-20

Notable Changes

The Gradle plugin now requires at least Gradle 5.4. This aligns with Kotlin's Gradle plugin.

Changelog

Support Kotlin 1.4 - #2981
1.10.0 to 1.11.0 | Could not find org.spekframework.spek2:spek-dsl-jvm - #2976
Make a release built against Kotlin 1.4 - #2974
Roll back to non snapshot spek version - #2922

See all issues at: 1.12.0-RC1

1.11.2 - 2020-08-19

Changelog

Fix formatting regression where issues printed the whole filename - #2988
Baseline adds file path instead package - #2985

See all issues at: 1.11.2

1.11.1 - 2020-08-18

Changelog

Fix regression separating classpath entries - #2961 - #2977
Show groovy and kotlin dsl in the same page - #2971
Fix typo - #2969
UnnecessaryLet: fix false positive when let is used for destructuring - #2968
UnnecessaryLet false positive when let is used for destructuring - #2966
Merge gradle groovy dsl and kotlin dsl documentation in the same page - #2846
Run detekt as Kotlin Compiler Plugin - #2119

See all issues at: 1.11.1

1.11.0 - 2020-08-13

Changelog

Fix false positive for UnnecessaryApply with disabled type resolution - #2963
Add new rule: LibraryEntitiesCannotBePublic - #2959
Suggest rule: Class cannot be public. - #2943
False positive in UnnecessaryApply - #2938
Add NullableToStringCall rule - #2903
New rule: toString over a nullable value - #2901
Introduce tooling-api - #2860

See all issues at: 1.11.0
See all issues at: 1.11.0-RC2
See all issues at: 1.11.0-RC1

1.11.0-RC2 - 2020-08-09

Changelog

Actually print the invalid properties - #2955
Update FindingsReport doc - #2942
Document reports on homepage - #2941
Set missing code languages in doc - #2935
Fix sitemap.xml - #2933
Flag listOfNotNull if all arguments are non-nullable - #2932
Add LanguageVersionSettings and DataFlowValueFactory to BaseRule - #2929
Generate release date to the changelog entries - #2924
Add informative message to UselessCallOnNotNull report - #2920
Flag listOfNotNull if all arguments are non-nullable - #2916

Housekeeping & Refactorings

Reduce test discovery for metrics module - #2953
Reduce test discovery for rules-style module - #2952
Reduce test discovery for rules-naming module - #2951
Reduce test discovery for rules-exceptions module - #2950
Reduce test discovery for rules-complexity module - #2949
Reduce test discovery for formatting module - #2948
Reduce test discovery for core module - #2947
Reduce test discovery for cli module - #2946
Reduce test discovery for api module - #2945
Update kramdown to remedy CVE vulnerability - #2940

See all issues at: 1.11.0-RC2

1.11.0-RC1 - 2020-08-02

Changelog

Add non-affirming test cases for UselessCallOnNotNull - #2918
Add Github Action: Detekt All to readme - #2915
Remove deprecated BuildFailureReport from doc - #2914
Document Console Reports code - #2913
Update docs in ProjectMetric class - #2912
Document Output Reports code - #2911
Document Output Reports on the home page - #2910
Add doc to UseDataClass - #2909
Generate output report config parts for config validation to know the properties - #2907
Fix UseDataClass to accept classes that implement interfaces - #2905
UseDataClass does not report for classes that implement interfaces - #2904
Add bindingContext function to FileProcessListener - #2872 - #2900
IgnoredReturnValue: Fix false positive on chained statements - #2895
Setup local PGP signing of published artifacts - #2893
error in output-reports config - #2891
OptionalUnit: fix false positive with 'else if' - #2888
OptionalUnit: don't report it if Unit is used as an expression - #2886
Preserve original exception when loading an invalid config - #2884
Sign artifacts and publish checksums - #2883
Check string arguments with TR enabled - #2879
Detekt Deployment is missing Gradle Module files - #2878
Better Support for Guard Clauses in ThrowsCount Rule - #2876
Make KtTestCompiler internal - #2874
Don't mention the old performance impact - #2873
Support for BindingContext in FileProcessListener - #2872
Hide KtTestCompiler as internal - #2871
Document Console and Output Reports - #2869
Split rules module into a module per rule set - #2865
Add new rule UseEmptyCounterpart - #2864
Introduce tooling api module - #2861
Extend docs on Processors - #2854
Add a rule to flag places where emptyList (and similar) can be used - #2850
Clarify / document processors and console reports in config - #2833
Fix UnnecessaryLet false negatives - #2828
UnnecessaryLet false negatives - #2826
False positive in OptionalUnit rule - #2452

Housekeeping & Refactorings

Test performance improvements - #2921
Remove redundant guard clauses - #2919
The tests are slow - #2902
Drop dependency on detekt test utils for Gradle plugin - #2899
Use KtFile.name instead of storing an absolute path key - #2898
Fix testcase with early access jdk's - #2897
Publish to Bintray using maven-publish - #2885
Simplify internal parsing to KtFile's - #2875
Mention bazel integration and a new blog article - #2867
Mention bazel and github actions integration - #2866
Cleanup code - #2862
Make sure to always target JVM 8 bytecode - #2853
Refactor - #2849
Clear findings even if we are not going to visit the file - #2848
Update Spek to 2.0.12 - #2847
Speed up generateDocumentation - #2832
Simplify pre-merge.yaml - #2823

See all issues at: 1.11.0-RC1

1.10.0

Notable Changes

New rules: IgnoredReturnValue, ImplictUnitReturnType
The complexity report (console/html) now calculates the cognitive complexity metric for your project.
Issues at functions and classes are now reported at the identifiers. This is especially helpful in the IntelliJ plugin.
Extension authors can now manipulate the findings with the new ReportingExtension.
detekt-formatting was updated to use KtLint 0.37.2 which includes a lot of improvements and changes. Please see their changelog.
- New wrapper rules: SpacingAroundDoubleColon, SpacingBetweenDeclarationsWithCommentsRule, SpacingBetweenDeclarationsWithAnnotationsRule
- You can configure the layoutPattern for ImportOrdering in detekt's configuration file.
- Indentation rule was replaced with a new implementation.
The default-detekt-config moved to detekt-core/src/main/resources/default-detekt-config.yml. Please update your links if you used it for references.

Migration

We fixed a regression in baseline signatures. This breaks baseline ids for reported issues at functions for some rules. You may need to regenerate the baseline file or manually change the ids. We are very sorry for this inconvenience.
KtLint replaced their default Indentation rule. Expect new formatting issues here!
We removed HierachicalConfig interface. It was deprecated in 1.7.0 and could lead to OOM errors when reusing Config embedding detekt. If you used Config.parent.key in your code, Config.parentPath is an alternative for this interface.
We are dropping the thin wrapper tasks over Intellij's inspections.sh and format.sh. They were broken for some time and in general sparingly used. There are alternative ways to run these scripts: https://www.jetbrains.com/help/idea/command-line-formatter.html or https://github.com/bentolor/idea-cli-inspector.
XML-tags in the baseline file now have more meaningful names:
- Whitelist -> ManuallySuppressedIssues
- Blacklist -> CurrentIssues
- Note: the old names will work until a new major release

Changelog

UnusedPrivateClass: fix false negative with import directives - #2817
UnusedPrivateClass: false negative with import directives - #2816
Publish detekt-bom module - #2814
[Gradle] Configuration cache support - #2813
UnusedPrivateClass: don't report imported classes - #2812
False positive UnusedPrivateClass when importing private enum constants directly. - #2809
Upgrade ktlint to version 0.37.2 - #2807
LongMethod: disregard params in method definition - #2806
LongMethod should not consider parameters while calculating the number of lines - #2804
Local vars inside object literals can't be const - Closes #2794 - #2799
MayBeConst should not report properties in local anonymous object declarations - #2794
Fix false positive for UnusedPrivateClass on generics - #2793
Report ComplexInterface issues at identifiers - #2786
Construct signatures based on named declaration instead of just the identifier - #2785
KtLint to 0.37.1 - #2783
Implement new rule ImplictUnitReturnTypet - #2781
Feature/restrict is properties - #2779
Rename Blacklist and Whitelist to be self explanatory - #2778
Remove deprecated HierarchicalConfig which could lead to OOM when reusing Config objects - #2768
Support layout property for ImportOrdering rule - #2763
Wrap three new experimental KtLint rules - #2762
Upgrade to ktlint 0.37.0 - #2760
Introduce reporting extensions - #2755
Add default print methods to ForbiddenMethodCall - #2753
Add the ignoreAnnotated array parameter to the FunctionNaming rule - #2734
FunctionNaming: Needs "ignoreAnnotated" - #2733
State that speeding the detekt task just applies to version < 1.7.0 - #2730
Add cognitive complexity in complexity report - #2727
add better documentation for the LongParameterList ignoreAnnotated - #2714
IgnoreReturnValue: config options - #2712
Use experimental indentation rule set instead of the unused from the standard rule set - #2709
Remove idea integration - #2706
Improve issue reporting/report at identifiers and package declarations - #2699 - #2702
Feature request - limit number of lines for an issue to 1 - #2699
New Rule: IgnoredReturnValue - #2698
New rule: NoPrintStatement - #2678
Add default values to SwallowedException rule - #2661
[V1.6.0 -> V1.7.4] Error reading configuration file, java.util.zip.ZipException: invalid code lengths set. - #2582
New rule: Warn on ignored return value - #2239
File 'C....idea' specified for property 'ideaExtension.path' is not a file. - #2172
ktlint integration does not report most errors - #2161
Non deterministic output. False positives on Indentation rule - #1633

Housekeeping & Refactorings

use parallel build options - #2808
Compile Test Snippets on Java 14 - #2803
Cleanup MayBeConst tests - #2802
Refactor compare_releases script to use clikt - #2801
Simplify the Code Coverage workflow - #2798
Run compile-test-snippets in a isolated job - #2797
Run verifyGeneratorOutput in a isolated job - #2796
Introduce BoM to manage our own dependencies - #2792
Smarter Caching on Github Actions - #2788
Fix config generation directory - #2782
Disable Gradle daemon on CI - #2780
Convert github-milestone-report.groovy to main.kts - #2777
Prepare 1.10.0-RC1 release - #2776
Fix memory leak with not closing processing settings - #2775
Do not print passing tests on the console - #2774
Run in parallel by default - #2773
Remove core module dependency for detekt-test - #2771
Unify extension debug printing - #2770
Package editorconfig dependency into the jar for formatting module - #2769
Update spek to 2.0.11 disabling timeouts - #2767
Introduce additional changelog section filtering developing/refactoring noise for the users - #2766
Move config validation from cli to core - #2764
Improve the performance of tests which use type resolution - #2756
Move reporting logic to core module - #2754
Cleanup tests in ProtectedMemberInFinalClass - #2752
Add referential equality test case in EqualsAlwaysReturnsTrueOrFalse - #2751
Extract xml and html reports to own modules - #2750
Separate console and output report loading - #2749
Bump actions/cache to v2 - #2746
Fix EqualsAlwaysReturnsTrueOrFalse doc - #2744
Simplify core facade class - #2743
Mark some well known cli functions as implicit unsupported api - #2742
Move baseline feature to core module - #2741
Make baseline entities internal - #2740
Simplify baseline data structures - #2739
Move baseline utils to the baseline package - #2738
Bump github-pages from 204 to 206 in /docs - #2737
Update gradle scan plugin - #2736
Update test dependencies - #2735
Move three core-related tests to core module - #2731
Update to Gradle 6.4.1 - #2729
Migrate to resource function of test-utils - #2728
Remove own collectByType function as Kotlin's does not crash anymore - #2726
Move processors to metrics module - #2725
Create publish tasks lazily - #2723
Faster documentation generation - #2722
Modularize test module - #2720
Introduce parser and psi module - #2716
Clean up code by using builtin associateBy function - #2715
[Security] Bump activesupport from 6.0.2.1 to 6.0.3.1 in /docs - #2708
Correct formatting issues - #2707
[Gradle plugin/rule authors]: Invalidate jars on modified date changes - #2703

See all issues at: 1.10.0

1.9.1

Changelog

Add negative tests to UnreachableCode rule - #2697
Inline test cases of CollapsibleIfStatements - #2696
Inline unreachable code - #2695
Fix wrong test cases for CollapsibleIfs rule - #2694
Print loaded rule set classes on debug - #2691
Fix wrong test cases for MandatoryBracesIfStatements - #2689
Simplify LongParameterList tests - #2688
Fix serialVersionUID false positive in UnderscoresInNumericLiteral - #2687
False positive UnderscoresInNumericLiterals in Serializable - #2686
Report a better message for LongParameterList - #2685
Report a better message for LongParameterList - #2684
Test against the newest Java version - #2682

See all issues at: 1.9.1

1.9.0

Changelog

Extra documentation added to pitfalls section - #2675
Use configuration avoidance for withType usages - #2672
GuardClause also matches if-with-body that contains a return - #2671
Simplify patterns - #2668
Include Kotlin multiplatform test folders to default exclude config - #2667
Remove duplicate MandatoryBracesLoops rule tests - #2665
Remove print statement in MandatoryBracesLoops - #2664
Remove $ as a valid char in class and method names - #2662
Build detekt executable before publishing it - #2654 - #2659
Add style rule for mandatory braces in for loop bodies - #2658
Asset in release 1.8.0 is not up-to-date - #2654
Rule: Mandatory braces for single-line for loop bodies - #2652
Use task configuration avoidance for detekt plugin - #2651
Add detekt GitHub action to readme - #2650
Don't report unused private properties in expect class - #2646
UnusedPrivateMember: don't report parameters in expect/actual functions - #2643
UnusedPrivateMembers on expect class - #2636
Include Kotlin multiplatform test folders to default exclude configuration - #2608

See all issues at: 1.9.0

1.8.0

Notable Changes

Most rule properties now support yaml lists next to string's with comma-separated-entries.
Standalone detekt executable on GitHub release pages
New rules: UnnecessaryNotNullOperator and UnnecessarySafeCall

Migration

Formatting rules get reported now on the correct lines. The baseline file may need to be adjusted/regenerated.
Issues concerning classes and objects are now reported at the identifier. The baseline file may need to be adjusted/regenerated.

Changelog

Use yaml lists in our own configuration and tests - #2623
Run code coverage as an own action - #2622
Modularize build script by introducing buildSrc module - #2621
*>excludes allow yaml list - #2620
Kotlin to 1.3.72 - #2619
Set failfast to false for pre-merge - #2618
Update documentation - #2617
ThrowingExceptionsWithoutMessageOrCause>exceptions allow yaml list - #2616
SwallowedException>ignoredExceptionTypes allow yaml list - #2615
ForbiddenPublicDataClass>ignorePackages allow yaml list - #2614
LabeledExpression>ignoredLabels allow yaml list - #2613
ForbiddenMethodCall>methods allow yaml list - #2612
Generate the cli as a stand alone executable - #2607
Report class and object violations at the identifier - #2606
Fix formatting line reporting - #2604
Correct documentation/recommendation of EmptyCatchBlock rule - #2603
Incorrect (or unclear) EmptyCatchBlock rule - #2602
Use more lintAndCompile - #2601
MagicNumber>ignoredNumbers allow yaml list - #2600
Remove unnecesary symbolic link - #2598
WildcardImport>excludeImports allow yaml list - #2596
ForbiddenClassName>forbiddenName allow yaml list - #2595
Fix false positives in UndocumentedPublicProperty - #2591
Fix false positive in UndocumentedPublicClass - #2588
>Annotated* allow yaml lists - #2587
ForbiddenComment>values allow yaml list - #2585
ExceptionRaisedInUnexpectedLocation>methodNames allow yaml list - #2584
ComplexMethod>nestingFunctions allow yaml list - #2583
UndocumentedPublicClass false positive for inner types - #2580
New Rule: UnnecessaryNotNullOperator - #2578
New Rule: UnnecessarySafeCall - #2574
New Rule: UnnecessarySafeCall - #2572
Add ignoreAnnotated option to LongParameterList - #2570
Rule configuration request: Ignore based on annotations - #2563
codecov test coverage report doesn't work correctly - #2558
Support yaml lists in the configuration values - #2498
Baseline ignoring MaxLineLength: on 1.0.1 - #1906
Formatting rules are reported at wrong line (e.g. MaximumLineLength) - #1843

See all issues at: 1.8.0

1.7.4

Notable Changes

The last Gradle plugin version was referencing 1.7.2 instead of 1.7.3. This was fixed and specifying the toolVersion is not necessary anymore.

detekt {
    toolversion = "1.7.3"
}

Changelog

Revert warning: jcenter is missing (#2550) - #2576
Add additional task input for plugin version task - #2575
jcenter() requirement - #2571

See all issues at: 1.7.4

1.7.3

Changelog

OptionalWhenBraces: fix false positive with lambda which has no arrow - #2568
OptionalWhenBraces: false positive with lambda which has no arrow - #2567
valueOrDefaultCommaSeparated throws a ClassCastException - #2566
1.6.0 -> 1.7.2: java.lang.String cannot be cast to java.util.List - #2561
Display actual and threshold values for several metric rules - #2559
Return the actual values for complexity rules - #2557
UseCheckOrError/UseRequire: fix false positive with a non-String argument - #2556
InstanceOfCheckForException: do not report when catch blocks do not check for the subtype of an exception - #2555
Include statistics for our custom detekt tasks - #2554
Remove unnecesary parentheses - #2553
Fix console output indentation - #2552
Console output is not indented correctly - #2551
Check jcenter repository present in Gradle plugin - #2550
Adding detekt to a project from scratch, detektGenerateConfig is broken - #2549
Validate Wrapper only on push to master - #2548
Cleanup Gradle Folders - #2547
Require CI to pass to run codecov - #2546
Export bintray key to publish snapshots - #2544
Activate UseErrorOrCheck rule - #2542
Refactor build file to sections - #2541
False positive: UseCheckOrError - #2514
InstanceOfCheckForException should be ignored for catch blocks that is more than an if expression - #1927

See all issues at: 1.7.3

1.7.2

Changelog

Remove ignore:AppVeyor from codecov config - #2540
Use kotlin-stdlib-jdk8 to reduce dependency conflicts - #2527 - #2538
Update Gradle plugin-publish to 0.11.0 - #2537
Delete created temp dir automatically on JVM exit - #2536
Delete created temp file automatically on JVM exit - #2535
Refactor MemberNameEqualsClassNameSpec tests - #2534
Fix UnnecessaryAbstractClass false-positive - #2533
Update GroovyDSL doc to mention input - #2532
Update KotlinDSL doc to mention input - #2531
Fix report for documented data classes property - #2530
UndocumentedPublicProperty reported for documented data classes property - #2529
detekt using Gradle documentation out of date - #2528
1.7.1 does not depend on Kotlin 1.3.71 - #2527
UnnecessaryAbstractClass false positive for abstractproperties - #2526
Do not fail the build on config property warnings/deprecations - #2523 - #2525
regression 1.7.1, threshhold does not exist - #2523
Setup GitHub Actions - #2512

See all issues at: 1.7.2

1.7.1

Changelog

UnnecessaryAbstractClass: fix false positive when abstract class has abstract inherited members - #2513
UnusedPrivateMember: report unused overloaded operators - #2510
Fix build compile error resulted from merging two conflicting PRs - #2508
Update Kotlin to 1.3.71 - #2507
Remove duplicated test task setup for gradle plugin - #2506
Add LicenceHeaderExtension test to verify resource path loading is supported - #2505
Ensure filesystems are created so paths can be gotten - #2504
FileSystemNotFoundException in detekt 1.7.0 when using --config-resource - #2503
MemberNameEqualsClassName: fix false negative when function has no explicit return type - #2502
Use the system-dependent line separator in NotificationReport - #2497
Remove default print stream - #2496
Don't use System.out in the ProgressListeners - #2495
Make the gradle plugin a sub project again - #2493
Move test factory outside the main code - #2491
Single runner - #2490
ProcessingSettings - #2489
Don't use println :detekt-generator - #2488
Simplify tests with StringPrintStream - #2487
Improve tests - #2486
Use PrinterStream in AstPrinter - #2485
Errors running detekt in the detekt project - #2484
Unify yml strings - #2482
Use yml arrays to list the ForbiddenImports - #2474
Add date, detekt-version + link to HtmlReport - #2470
Refactor FindingsReport + FileBasedFindingsReport - #2454
The detekt HTML report should include date, version number, website link (Feature Request) - #2416
Added validation of constructors to LongParameterList - #2410
UnusedPrivateMember doesn't report the correct warning count - #1981
UnusedPrivateMember should consider overloaded operators - #1444
False positive on rule UnnecessaryAbstractClass - #727
MemberNameEqualsClassName ignores functions which return a single expression - #655

See all issues at: 1.7.1

1.7.0

Notable Changes

The Gradle plugin should be on par with the CLI performance-wise
Good to know: detekt CLI always supported argument files (java -jar detekt-cli.jar @argsfile)
New CLI --version flag
New Rule AbsentOrWrongFileLicense and other rule improvements

Changelog

Update Travis to use the newest xcode11.3 image - #2480
Synchronize use of root extension point - #2479
Extend ComplexInterface to support exclusion of private member/functions - #2478
Minor refactors around --create-baseline - #2477
Check primary ctor in UndocumentedPublicProperty - #2475
Unify yaml strings - #2472
Running detektBaseline generates too general exceptions, disabling rules - #2471
UndocumentedPublicProperty doesn't check primary constructor - #2468
Remove default implementations of toString() - #2467
Remove tags from core documentation sites - #2466
Validate boolean config values - Closes #2045 - #2465
Add test for BaselineHandler - #2462
Refactor BaselineFormatSpec.kt - #2461
Add tests for BaselineFacade - #2460
Fix toString() output for Whitelist class - #2459
Remove unused functions in XmlExtensions.kt - #2458
Add test cases for invalid yaml config - #2457
Add edge test cases for ComplexityReportGenerator - #2456
Simplify anonymous detektion object creation - #2455
Update trim logic in Debt:toString() - #2453
Refactor FindingsReport + FileBasedFindingsReport - #2451
Rename tests with _Test prefix to _Spec - #2450
Refactor HtmlOutputReport - #2449
Simplify UnnecessaryApplySpec test cases - #2448
Link code samples package for extension guide - #2447
ComplexInterface - should it also count private methods? - #2446
Update AppVeyor branch conf to comply with Travis - #2445
Add PsiViewer plugin to Contributing guide - #2444
UnnecessaryApply: fix false positive when it's used as an expression - #2442
Add detekt-hint to integrations - #2441
SwallowedException: fix false negative when using variables - #2436
UnnecessaryApply false positive cases - #2435
Prepare 1.7.0-beta2 release - #2434
Parallel invocation of DetektFacade fails spuriously - #2433
Deprecate BaseRule and state that it will be make sealed - #2365 - #2432
Add License rule - #2429
Skip all guard clauses at function start for ReturnCount - Closes #2342 - #2428
Fail if --baseline file not found - #2427
Add tests for YamlConfig - #2426
Choose a minimum codecov patch coverage ratio - #2425
Include ruleset-suppression feature doc - #2424
Add Groovy DSL example for jvmTarget to homepage - #2423
Add groovy dsl example for jvmTarget - Closes #2408 - #2422
Deprecate hierarchical config - #2421
Deprecate implementations of Config - #2420
Remove YAML Extension Requirement - #2419
Update Spek version to 2.0.10 - #2418
file does not end with .yml! - #2417
Disable autoCorrect property for all rules if global flag is set to false - #2413
Release 1.7.0 beta - #2409
Stop using kotlin-reflect - #2405
Stop compiling with experimental flag - #2404
Only post a code coverage patch status to PRs - #2402
ExplicitCollectionElementAccessMethod: Don't report on nullable collection - #2401
Discourage new Case files - #2399
Use argsfiles for CI - #2397
Update to Kotlin v1.3.70 - #2396
Fix typo in VersionPrinter test - #2395
Add documentation for cli --version flag - #2392
ExplicitCollectionElementAccessMethod: Do not report map?.get("foo") - #2391
Update Gradle to 6.2.1 - #2390
Do not report conditional elvis continue statements - Closes#2388 - #2389
False positive: UnconditionalJumpStatementInLoop with elvis operator ?: - #2388
Refactor getting the detekt version for readability - #2387
Create less objects and sets when creating findings id map - #2385
Add --version to cli - #2383
Add --version CLI option - #2382
Add test cases for cli/runners package - #2381
Sort and run correctable rules first - #2341 - #2378
Should fail if --baseline file does not found? - #2374
Deprecate rule set methods which expose implementation details of detekt-core - #2366
Deprecate api's exposing detekt-core implementation details - #2365
ReturnCount excludeGuardClauses not working - #2342
Mixing autocorrectable and non correctable rules results in obsolete issue locations for reports - #2341
Allow Detekt CLI to take an args file. - #2318
Homepage doesn't show Jekyll tags correctly - #2309
Call detekt reflectively - #2282
Copyright header rule for Kotlin files - #1515 - #2077
SwallowedException false negative - #2049
Invalid boolean config values are evaluated silently to false - #2045
Detekt Gradle Plugin is much slower than the jar - #2035
Cases files are super rigorous to work with - #1089

See all issues at: 1.7.0

1.6.0

Migration

Rule set authors do not need to exclude their rule set from config validation anymore. This will be done by default now.

If you need to include further config property checks, give the new ConfigValidator api a try.

Changelog

Check-in ConfigValidator documentation - #2368
Remove obsolete PathFilter class - #2367
Reference coroutines doc for homepage - #2363
[Documentation Request] Coroutine Ruleset - #2362
Extend AnnotationExcluder to catch fully qualified annotations - #2361
UnnecessaryAbstractClass excludeAnnotatedClasses not working - #2360
Replace LinkedList with ArrayDeque - #2358
Fix detection of CRLF line endings - #2357
Introduce new ConfigValidator extensions - #2285 - #2356
Include options to better meet requirements for utility files - #2355
Don't normalize file content twice - #2354
Remove unused code in rules/Case.kt - #2351
Add blog post about speeding up a detekt task - #2349
Add tests for setting KtLint's config - #2348
add details into internal validation - #2347
Minor change in the HTML report: Remove extra space when you copy the file path - #2344
detekt does not always inject the required EDITOR_CONFIG_USER_DATA_KEY for ktlint - #2339
Remove duplicate tests for TooManyFunctions rule - #2338
Add EmptyTryBlock rule - #2337
Use requireNotNull for arguments checking - #2336
Refactor and add tests to Ast- and ElementPrinter - #2335
Add test case for disabled reports - #2334
Refactor ReportPath:load() - #2333
Add test case for FileProcessorLocator - #2332
Add test cases for Kt(Tree)Compiler - #2331
Add equality test cases for PathFiler - #2330
Add local function test case for MethodOverloading rule - #2328
Add anonymous object expression test case for MethodOverloading rule - #2327
Validate Gradle Wrapper - #2326
Use more consistent metrics in HtmlReport - #2325
Fix ClassCastException in ExplicitCollectionElementAccessMethod - #2323
ExplicitCollectionElementAccessMethod crashes - #2322
use same behaviour for valueOrNull as for valueOrDefault - #2319
FailFastConfig.valueOrNull should return specified value for active and maxIssues - #2316
Bugfix: MagicNumber with ignoreNamedArgument and a negative value - #2315
More consistent reports - #2291
Change MatchingDeclarationName to handle utility files - #1500
False-positive MagicNumber issue reported when using negative numbers - #530

See all issues at: 1.6.0

1.5.1

Update intro page to deprecate input property - #2311
Update codecov run settings to after_n_builds=4 - #2305
Update GroovyDSL doc to deprecate input property - #2304
Update KotlinDSL doc to deprecate input property - #2303
Fix ExplicitCollectionElementAccessMethod crash - #2302
ExplicitCollectionElementAccessMethod crashes - #2301

See all issues at: 1.5.1

1.5.0

Notable Changes

detekt is now silent by default. It only prints something if issues are found. Remove the following excludes if you want the old behavior back.

console-reports:
  active: true
  exclude:
     - 'ProjectStatisticsReport'
     - 'ComplexityReport'
     - 'NotificationReport'

detekt now fails the build if any issue is found. Change the maxIssues property to 10 for the old threshold.

build:
  maxIssues: 0

The HTML report now prints the issue count per rule and rule set.
New rules: ExplicitCollectionElementAccessMethod and ForbiddenMethod

Changelog

add new mention to README.md - #2293
Sort html report - #2290
Number format in some report - #2289
Show the finding count in the html report - #2288
Keep the order of the issues in the html report - #2287
Show issue count in the html report - #2286
Fixing the Documentation not properly calling the superclass - #2284
Do you have to call super in custom rules? - #2283
Measure performance of various stages when using --debug - #2281
Remove printing the whole config for --debug - #2280
Introduce DefaultRuleSetProvider interface marking detekt-rules providers as default - #2279
Simplify test dependency setup in build files - #2278
Fix class loader memory leaks when loading services - #2277
Always dispose Kotlin environment fixing memory leak in error cases - #2276
Sanitize gradle build scripts and suppress unstable api usages - #2271
Update website ruby dependencies fixing potential security vulnerability - #2270
Fix regression not considering baseline file when calculating build failure threshold - #2269
Turn detekt silent by default - #2268
Remove redundant build failure message - #2264 - #2266
Build failed with... is printed twice in the cli - #2264
Update config:maxIssues value to 0 - #2263
Don't flag inherited visibility in NestedClassesVisibility - #2261
Simplify argument parsing logic, remove any exitProcess() calls from buildRunner - #2260
Modify default behavior to not output unless errors are found. Adding a verbose flag which will have legacy behavior - #2258
Test some edge cases in detekt-api - #2256
Add a new line at the end of the txt report - #2255
Implement ExplicitCollectionElementAccessMethod rule - #2215
ForbiddenMethod Rule - #1954
NestedClassesVisibility(False negative): Nested class doesn't inherit visibility from parent - #1930

See all issues at: 1.5.0

1.4.0

Notable Changes

New rule set coroutines with two specialized rules was added.
As always new rules must be activated by the user until they get stable.

coroutines:
  active: true
  GlobalCoroutineUsage:
    active: false
  RedundantSuspendModifier:
    active: false

Wrapped KtLint was updated to 0.36.0 introducing two rules

EnumEntryNameCase
NoEmptyFirstLineInMethodBlock

Migration

The properties ignoreOverriddenFunction and ignoreOverriddenFunctions of some rules got deprecated and unified to a new property ignoreOverridden.

Changelog

Refactor BuildFailure code - #2250
Fix nested methods bug in MethodOverloading rule - #2249
ThrowingExceptionInMain rule should consider main() function with no parameters - #2248
MethodOverloading bug with nested overloaded methods - #2247
Reduce complexity in FindingsReport - #2246
Add RedundantSuspendModifier rule - #2244
New ktlint rules - #2243
Inline MethodOverloading case file - #2241
ThrowingExceptionInMain: fix #2248 and add tests - #2240
Add disposing Kotlin environment. - #2238
OOM on multiple invocations - #2237
Improve doc for UnusedPrivateMember - #2236
Don't resolve dependencies during project configuration - #2235
Revert "Introduce Pull Request Labeler" - #2234
Fix #2230 equals() func detection - #2233
Fix git commit-hook label and code snippet doc - #2232
WrongEqualsTypeParameter does not ignore multi-parameter equals methods - #2230
Introduce Pull Request Labeler - #2228
Gradle plugin: Build upon default detekt config - #2227
Apply ktlint formatting plugin to Gradle plugin - #2226
Bump dependencies - #2225
Run shadowJar & installShadowDist task with everything else - #2220
Travis: Use consistent Java vendor - #2219
"Property is misspelled or does not exist" error for new rules in default rulesets - #2217
MethodOverloading false positive if every entry of an enum implement a method. - #2216
Add Git detekt pre-commit hook doc - #2214
Remove exclude workaround for new build property - #2203
Add GlobalCoroutineUsage rule + coroutines ruleset - #2174
Add rule [RedundantSuspend] to detect redundant suspend modifiers - #2156
Deprecate ignoreOverriddenFunction/s in favor of ignoreOverridden - #2132

See all issues at: 1.4.0

1.3.1

Remove old unused documentation - #2210
Show code snippet erros in html reports - #2209
Use compileAndLint in UnusedPrivateClassSpec - #2208
Fix false positive in UnusedPrivateClass - #2207
Update readme promoting new properties of the gradle plugin - #2205
Rename default const containing ACCEPTED - #2204
Mistake From LongParameterList.kt - #2202
Exclude yet unknown new build property - #2201
Add comment regarding type resolution to README - #2199
Type resolution doc - #2198
Correct indentation for Groovy DSL doc - #2197
Use shorthand syntax for assertThat() - #2196
Refactor MagicNumber to use commaSeparatedPatterns - #2195
Attach FILE_PATH_USER_DATA_KEY user data on FormattingRules (#1907) - #2194
Handle invalid config exit code in gradle plugin - #2193
Add tests showing how to exclude custom config properties in plugins - #2192
Fix suppression of KtLint rules on file level - #2179 - #2191
Mention needed kotlinx.html library from jcenter - #2146 - #2190
UnusedPrivateClass has false positive behavior for deserialized items - #2158
Use JDK 11 (LTS) + 13 for AppVeyor builds - #2141
Document how to create a common baseline file for multi module gradle projects - #2140
DetektAll with baseline fails with error - #2100
ForbiddenMethod Rule - #1954
Do not report auto-corrected formatting issues - #1840

See all issues at: 1.3.1

1.3.0

Notable changes

Minimal Gradle version increased to 5.0
New rules:
- UnnecessaryAnnotationUseSiteTargetRule
- MapGetWithNotNullAssertionOperator

Changelog

Add printers to the command line runner - #2188
Fix documentation of UseArrayLiteralsInAnnotations - #2186
Inline resolving severity label for XML reports - #2184
Extract common jvm target value, add jvmTarget into documentation. Cl… - #2183
Fix Detekt Gradle task cache restoration issue (#2180) - #2182
Fix exception when running ArrayPrimitive on star-projected arrays - #2181
Gradle cache restoration issue - #2180
Add MacOS JDK13 build job to TravisCI - #2177
Running "ArrayPrimitive" rule on "Array<*>" causes detekt to throw exception - #2176
Update Spek to v2.0.9 - #2173
Create Rule: MapGetWithNotNullAssertionOperator - #2171
EqualsAlwaysReturnsTrueOrFalse fails hard on override fun equals(other:Any) = ... - #2167
Prepare 1.3.0 release - #2165
UnsafeCast: update documentation to match new behavior - #2164
Add jvmTarget change into documentation - #2157
Create UnnecessaryAnnotationUseSiteTargetRule - #2099
Gradle 6 - #1902
Gradle 6 planning - #1820

See all issues at: 1.3.0

1.2.2

Notable Changes

1.2.1 introduced breaking changes for users of Gradle < 5. This was reverted.
1.3.0 will drop support for Gradle < 5.
Fixed a regression in the html report.

Changelog

regression updating 1.2.0 to 1.2.1, unknown property 'filters' for object of type DetektExtension - #2163
StringIndexOutOfBoundsException when generating HTML report - #2160
Restore KotlinExtension - #2159
1.2.1 breaks the build with: unresolved reference: detekt - #2152
Updated to correct classpath documentation for Android projects. - #2149
Update to Kotlin v1.3.61 - #2147
Document how to exclude detekt from the check task - #1894 - #2144
Use JDK 11 (LTS) + 13 for Travis builds - #2142
Don't compile test snippets (bindingContext) - #2137
StringIndexOutOfBoundsException: String index out of range: 8 when generating HTML report after update to 1.2.0 - #2134

See all issues at: 1.2.2

1.2.1

Notable changes

Supports Kotlin 1.3.60
Fixed a regression in configuration validation logic when using build>weights>[RuleSet|Rule] properties.
Some rules got improvements (see changelog)

Changelog

Exception analyzing file - #2139
Simplify ConstructorParameterNaming:ignoreOverridden check - #2136
Test common config sections pass through config validation - #2135
Kotlin 1.3.60 with fix for "Unable to load JNA library" warning - #2129
Unexpected nested config for 'build>weights'. - #2128
Remove redundant Javadoc - #2127
Lazy init KotlinScriptEnginePool - #2126
Add tests for MagicNumber:ignoreLocalVariableDeclaration - #2125
Fix NPE for EqualsAlwaysReturnsTrueOrFalse - #2124
Add MagicNumber:ignoreLocalVariableDeclaration config - #2123
Fix MagicNumber:ignoreConstantDeclaration doc - #2116
Return non-nullable string in DebtSumming class - #2113
Refactor TrailingWhitespace test - #2112
Use inline code snippets instead of case files - #2111
UnusedImports: False positive if referenced in @throws/@exception/@sample - #2106
Don't compile test snippets - #2105
MemberNameEqualsClassName should ignore overridden property names too - #2104
EqualsAlwaysReturnsTrueOrFalse crashes on certain input - #2103
UnusedImports: False positive if referenced only in @throws/@exception clause - #2098
Add config flag ignoreOverridden to ConstructorParameterNaming - #2097
compileAndLint is 2.5 times slower than lint - #2095
Improve naming tests - #2094

See all issues at: 1.2.1

1.2.0

Notable changes

The HTML report now includes the complexity metrics and previews of the code locations.
Suppression by rule set id is now supported @Suppress("detekt.[RuleSetId].[RuleId]")
parallel=true and --parallel now effect both the compilation and analysis phase.
Users of Gradle's --parallel flag are encouraged to turn off the parallelism of detekt. Or turn it on otherwise.
detekt internally does not use the ForkJoinPool.commonPool() anymore. When embedding detekt feel free to pass your own ExecutionService to the ProcessingSettings.

Migration

Some reported positions of rules have changed, see issues starting with "Improve text location: ". This may lead to some unexpected changes in the baseline file.
The rule ComplexMethod got refactored and counts the cyclomatic complexity according to https://www.ndepend.com/docs/code-metrics#CC. This change lead to increasing the threshold to 15 (was ten).

Changelog

Update to Kotlin v1.3.60 - #2109
UnusedPrivateClass: Fix false positive with private annotations - #2108
Refactor ComplexMethod - #2090
Fix NestedBlockDepth false negative - #2086
NestedBlockDepth false negative - #2085
Deprecate Location.locationString - #2084
Add license badge to README - #2080
Deploy SNAPSHOTs automatically - #2079
Fix TrailingWhitespace reported position - #2078
Activate more rules by default - #1911 - #2075
Report InvalidRange for empty until range - #2074
Deprecate properties on Entity - Closes #2014 - #2072
Add complexity report to html output - #2071
Use constants for config keys in tests - #2070
Mention location adjustment in rules for 1.2.0 - #2068
Improve text location: TooManyFunctions - #2065
Improve text location: OptionalAbstractKeyword - #2064
Improve text location: NestedBlockDepth - #2063
Improve text location: MatchingDeclarationName - #2062
Improve text location: LongMethod - #2061
Improve text location: LargeClass - #2060
Improve text location: ComplexMethod - #2059
Improve text location: EmptyClassBlock - #2058
Replace spek test hasSize(0) with isEmpty() - #2057
Remove MacOS JDK11 CI run as discussed in #2015 - #2056
Introduces mocking library 'mockk' - #2055
Improve text location: InvalidPackageDeclaration - #2052
Improve text location: MandatoryBracesIfStatements - #2051
Improve text location: ClassNaming - #2050
potential-bugs InvalidRange does not work in all cases - #2044
Don't checkBuildFailureThreshold if we are creating the baseline - #2034
gradle detektBaseline task fails - #2033
Fix #2021 - #2032
Update dependencies - #2031
Dokka fix - #2030
Simplify and refactor RuleProviderTest - #2029
Simplify MultiRuleCollector test cases - #2028
Dont check WrongEqualsTypeParameter if the function is topLevel - #2027
Fix false positive at EmptyIfBlock - #2026
Support guard clause exclusion for ThrowsCount rule - #2025
Add ImplicitDefaultLocale rule - #2024
Use double backtick for the in-line code - #2022
EqualsAlwaysReturnsTrueOrFalse: The original exception message was: java.util.NoSuchElementException: Array is empty. - #2021
Ignore sealed classes for utility class having public constructor rule - #2016
Better handling for the Suppresion of errors - #2013
Fix description of NoLineBreakBeforeAssignment - #2011
Copy paste error in message in NoLineBreakBeforeAssignment.kt - #2008
UtilityClassWithPublicConstructor should not be reported for sealed classes - #2005
Validate yaml configurations by comparing their structure - #516 - #1998
Allow the user to collapse the rules in the html report - #1997
Allow detekt findings to be suppessed with rule set id - Closes #766 - #1994
Upgrade Spek to v2.0.8 - #1992
Reimplement parallelism internal logic - #1991
Findings assertions - #1978
Fix EnumNaming textLocation - #1977
Add snippet code in html report - #1975
Change reported element in 2 documentation rules - #1952
Enable more rules in failfast - #1935
Add UndocumentedPublicProperty rule - closes #1670 - #1923
Calculate MCC (McCabe Complexity) accordingly - #1921
UseDataClass conflicts with DataClassShouldBeImmutable - #1920
Redesign "parallel" flag/property - #1845
SNAPSHOT process feedback - #1826
Initial MCC change - #1793
@Suppress("Detekt.ruleset") feature - #766
Validate Configuration file before using it - #516

See all issues at: 1.2.0

1.1.1

Changelog

Improved test case for resolved #1971 (TrailingWhitespace and multiline string) - #2003
Set defaults for boolean property when writing custom detekt tasks - #1996
Generate PluginVersion.kt with newline at end - #1993
Remove unnecessary logs from RuleProviderTest - #1990
Use inline code snippets instead of case files - #1989
Use config parameter for UseIfInsteadOfWhen rule - #1987
Use inline code snippets instead of case files - #1976
Don't flag trailing whitespaces in multiline strings - #1971

See all issues at: 1.1.1

1.1.0

Changelog

Clarify threshold pararameter meaning in docs - #1974
Introduce ignoreLabeled config for ReturnFromFinally - #1973
Ignore FunctionOnlyReturningConstant for allowed annotations - #1968
Allow regex configuration support for Forbidden Import rule - #1963
Refactor and simplify RuleCollectorSpec - #1959
Use inline code snippets instead of case files - #1958
Improve UnusedPrivateMember when it's related with parameters - #1949
Fix SpacingBetweenPackageAndImports issue for scripts without packages - #1947
Remove ConditionalPathVisitor - #1944
Extend UseDataClass with the allowVars configuration property - #1942
HasPlatformType rule - #1938
Bogus SpacingBetweenPackageAndImports violation for KTS without package - #1937
Gradle deprecations - #1934
UnnecessaryParentheses should be ignored for bit operations - #1929
Prepare 1.1.0 release - #1919
Deprecate debug in IDEA tasks - #1918
Refactoring: use more readable functions - #1916
Don't fail on master when test coverage decreases - #1914
Detect deprecations - #1913
Fix typos - #1908
Report PreferToOverPairSyntax only for kotlin.Pair - #1905
Fix TimeoutCancellationException - downgrade Spek - #1903
Update dependencies - #1901
Add RedundantExplicitType rule - #1900
Remove unused KtAnnotated util functions - #1899
Simplify detekt rules - #1898
Fix shared variable in detekt-extension rules - #1897
Make samples more idiomatic - #1895
Update detekt extensions doc - #1893
Clarify WildcardImport rule configuration - #1888
Add configuration to allow patterns for forbidden comment - #1887
Only report UnsafeCallOnNullableType on actual nullable types - #1886
Minimise usage of Kotlin reflection - #1883
Refactor KotlinCoreEnvironment test setup - #1880
Trust Kotlin compiler to identify unsafe casts - #1879
Replace tabs with spaces in rule KDoc - #1876
Make all Gradle tasks cacheable - #1875
Indentation for compliant and non-compliant code examples is missing - #1871
Don't build twice when PR created from branch - #1866
Print rendered report if it's null or blank - #1862
Silence report if containing no findings - #1860
Group console violation reports by file - #1852
Update Kotlin to v1.3.50 - #1841
Gradle 5.6 - #1833
Implement rule to suggest array literal instead of arrayOf-expression in annotations - #1823
Make UnsafeCast less aggressive - #1601
Consider publishing artifacts to mavenCentral instead of jCenter - #1396
false positive unnecessary parentheses in conjunction with lambdas - #1222
False positives on UnsafeCast on AppVeyor (Windows?) only - #1137
PreferToOverPairSyntax false positive - #1066
Rule ForbiddenComment - regexp support - #959
UnsafeCallOnNullableType should not be reported for platform types - #880
Exclusion patterns in detekt-config - #775
Rule: OptionalTypeDeclaration - #336
Check if it is feasible to integrate ktlint as a rule set - #38

See all issues at: 1.1.0

1.0.1

Notable changes

detekt runs can be completely silent on absence of findings](/blog/2019/08/14/custom-console-reports)
All detekt's dependencies are now on MavenCentral. Bogus "could not find JCommander dependency" should be gone.

Changelog

Migrate SafeCast test cases to JSR223 - #1832
Remove unused case entries - #1831
Migrate ComplexInterface test cases to JSR223 - #1830
Remove pluginrepository from maventask.md - #1827
Update maven-task --excludes arg - #1825
Improve grammar on 1.0 release post - #1822
Write guide on how to make detekt silent - #1819
Use notifications instead of println - #1818
JCommander 1.78 - #1817
Fix typo in spelling of --auto-correct flag - #1816
Update dependency versions - #1815
Tidy the build files - #1814
Downgrade to jcommander v1.72 - #1809
Update docs to mention test-pattern deprecation - #1808
Quiet mode or ability to disable all output in Gradle - #1797

See all issues at: 1.0.1

1.0.0

Migration

Gradle Plugin: removed report consolidation. It was flawed and some users were stuck with RC14. It will be replaced in a further version.
Gradle Plugin: autoCorrect property is now allowed on the detekt extension. No need to create a new task anymore.
Formatting: updated to KtLint 0.34.2 which removed the two rules NoItParamInMultilineLambda and SpacingAroundUnaryOperators.

Changelog

Gradle plugin: Set default path for "config" parameter - #1801
Don't use provider value that may not have been set - #1800
Remove raw URLs from README - #1799
Add missing autoCorrect declarations - #1798
Docs: Missing autoCorrect option for various rules - #1796
Update to KtLint 0.34.2 - #1791
Add auto correct flag to detekt extension - #1790
Gradle plugin: Fix visibility of internal properties - #1789
Check classes and functions documented for api module - #1788
Provide default value for ignoreFailures - #1787
Update detekt-api documentation - #1786
Document meanings of rule severity levels - #1785
Remove unused code - #1784
Fix UseDataClass false positive (delegation) - #1783
Add ignore pattern to SwallowedException - #1782
Prevent adding author tags in code - #1776
Remove xml report consolidation. - #1774
Update Complex Method doc - closes #1009 - #1773
Implement dry-run option for detekt gradle tasks. - #1769
Fix missing report file issue. - #1767
Not running formatting autocorrect - #1766
Check if file exists before considering it for report merges - #1763
Preset ignoreFailures property with false as it is also used by Gradle - #1762
Rearrange badges, add codefactor - #1760
Update Kotlin to 1.3.41 - #1759
Update EmptyClassBlock to skip classes with comments in the body - #1758
EmptyClassBlock should consider comment as "body" (via option?) - #1756
Remove obsolete NoWildcardImports autoCorrect param - #1751
Kotlin language version handling - #1748
Fix cli execution doc - #1747
Add naming test for ForbiddenVoid rule - #1740
ForbiddenVoid: New option 'ignoreUsageInGenerics' - #1738
Default Gradle config path should be config/detekt/config.yml - #1262

See all issues at: 1.0.0

Changelog and Migration Guide

1.23.0-RC3 - 2023-04-29​

Notable Changes​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

Contributors​

1.22.0 - 2022-11-20​

Notable Changes​

Migration​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

1.21.0 - 2022-07-16​

Notable Changes​

Migration​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

1.20.0 - 2022-04-14​

Notable Changes​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

1.19.0 - 2021-11-29​

Notable Changes​

Migration​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

1.18.1 - 2021-08-30​

Notable Changes​

1.18.0 - 2021-08-12​

Notable Changes​

Migration​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

1.17.1 - 2021-05-19​

Notable Changes​

Changelog​

1.17.0 - 2021-05-15​

Notable Changes​

Changelog​

Dependency Updates​

Housekeeping & Refactorings​

1.16.0 - 2021-03-10​

Changelog​

Housekeeping & Refactorings​

1.15.0 - 2020-12-18​

Notable Changes​

Migration​

Changelog​

Housekeeping & Refactorings​

1.14.2 - 2020-10-20​

Changelog​

Housekeeping & Refactorings​

1.14.1 - 2020-09-30​

Changelog​

Housekeeping & Refactorings​

1.14.0 - 2020-09-26​

Notable Changes​

Changelog​

Housekeeping & Refactorings​

1.13.1 - 2020-09-13​

Notable Changes​

1.13.0 - 2020-09-07​

Migration​

Changelog​

Housekeeping & Refactorings​

1.12.0 - 2020-08-25​

Notable Changes​

Migration​

Changelog​

Housekeeping & Refactorings​

1.12.0-RC1 - 2020-08-20​

Notable Changes​

Changelog​

1.11.2 - 2020-08-19​

Changelog​

1.23.0-RC3 - 2023-04-29

Notable Changes

Changelog

Dependency Updates

Housekeeping & Refactorings

Contributors

1.22.0 - 2022-11-20

Notable Changes

Migration

Changelog

Dependency Updates

Housekeeping & Refactorings

1.21.0 - 2022-07-16

Notable Changes

Migration

Changelog

Dependency Updates

Housekeeping & Refactorings

1.20.0 - 2022-04-14

Notable Changes

Changelog

Dependency Updates

Housekeeping & Refactorings

1.19.0 - 2021-11-29

Notable Changes

Migration

Changelog

Dependency Updates

Housekeeping & Refactorings

1.18.1 - 2021-08-30

Notable Changes

1.18.0 - 2021-08-12

Notable Changes

Migration

Changelog

Dependency Updates

Housekeeping & Refactorings

1.17.1 - 2021-05-19

Notable Changes

Changelog

1.17.0 - 2021-05-15

Notable Changes

Changelog

Dependency Updates

Housekeeping & Refactorings

1.16.0 - 2021-03-10

Changelog

Housekeeping & Refactorings

1.15.0 - 2020-12-18

Notable Changes

Migration

Changelog

Housekeeping & Refactorings

1.14.2 - 2020-10-20

Changelog

Housekeeping & Refactorings

1.14.1 - 2020-09-30

Changelog

Housekeeping & Refactorings

1.14.0 - 2020-09-26

Notable Changes

Changelog

Housekeeping & Refactorings

1.13.1 - 2020-09-13

Notable Changes

1.13.0 - 2020-09-07

Migration

Changelog

Housekeeping & Refactorings

1.12.0 - 2020-08-25

Notable Changes

Migration

Changelog

Housekeeping & Refactorings

1.12.0-RC1 - 2020-08-20

Notable Changes

Changelog

1.11.2 - 2020-08-19

Changelog

1.11.1 - 2020-08-18