CHANGELOG

1.3.50

Compiler

• KT-12787 Debugger: Generate line number at end of function (to set a breakpoint on the last line of the block)
• KT-23675 "Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" when classes are defined inside an anonymous extension function and access a field of the extension function's this instance
• KT-24596 Refactor / Inline const property does not insert its value into usage in annotation
• KT-25497 kotlinx.serialization - throws Backend Internal error exception during code generation of sealed classes
• KT-28927 "IllegalStateException: Arrays of class literals are not supported yet" in AnnotationDeserializer.resolveArrayElementType
• KT-31070 IndexOutOfBoundsException in Analyzer with @JvmOverloads constructor with 34+ parameters
• KT-31265 FIR: experimental compiler
• KT-31535 False positives from compiler warning IMPLICIT_NOTHING_AS_TYPE_PARAMETER
• KT-31969 NI: false positive USELESS_ELVIS with multiple elvis calls
• KT-32044 For loop over full UByte range terminates at UInt bound.
• KT-25432 No smartcast on qualifier expression of captured type
• KT-30796 psi2ir generates IrErrorType for elvis with generic type having nullable upper-bound when expected type is not nullable
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31347 "IndexOutOfBoundsException: Insufficient maximum stack size" with crossinline and suspend
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []
• KT-31734 Empty parameter list required on Annotations of function types
• KT-32434 New type inference fails for Caffeine Cache
• KT-32452 Kotlin 1.3.40 - problem in IDE with new type inference and suspending method reference
• KT-32407 NI: "use property access syntax" intention causes freezes in editor
• KT-33127 Script result value is not calculated properly for the last expression
• KT-33157 Inline class with generic method is considered bad class by javac

Docs & Examples

• KT-16602 Provide examples of sorting API usage
• KT-32353 Document order of array elements initialization

IDE

New Features

• KT-28098 Insert space after automatically closed right brace of nested lambda to follow code style

Fixes

• KT-16476 Extend selection (Select Word) doesn't select just KDoc if cursor is just before the KDoc
• KT-21374 Imports optimized tooltip is displayed, even if no changes were made
• KT-21422 IDE can't import class from root package
• KT-27344 MPP: jvmWithJava: no IDE module dependency is created between Kotlin test and Java main on import; Gradle build is successful
• KT-29667 Kotlin update settings has wrong looking text boxes for versions
• KT-30133 Update copyright creates duplicates for build.gradle.kts files
• KT-30782 'Show Method Separators' does not separate expression body Kotlin functions
• KT-31022 Quick definition does not show Kotlin code in Java files
• KT-31499 "Extend selection" selects escaped identifier name together with backticks
• KT-31595 "Complete current statement" for method call closes brace at wrong place
• KT-31637 NPE in IDE when organizing imports
• KT-31786 KNPE at copy attempt due to kdoc reference
• KT-32276 Fix flaky test for ultra light classes
• KT-32364 Remove deprecated usages of OUT_OF_CODE_BLOCK_MODIFICATION_COUNT and write a replacement for Kotlin language
• KT-32370 Lambdas should have implicit return in Kotlin Uast
• KT-12096 Spring: rename of Kotlin bean defined in @Bean annotation fails
• KT-28193 Exception: Mirror element should never be calculated for light classes generated from a single file
• KT-28822 Dependencies in Kotlin MPP project could be wrongly resolved if project was not build before import
• KT-29267 Enable ultra-light classes by default
• KT-31129 Call only Kotlin-specific reference contributors for getting Kotlin references from PSI
• KT-32082 Kotlin facet: 1.3.40 plugin does not properly read target platform settings of 1.3.50 plugin
• KT-32969 Data class extending abstract class with final toString, equals or hashCode causes exception
• KT-33245 IllegalArgumentException exception occurs on Tools->Configure Koltin in Project action in Android Studio

IDE. Completion

• KT-9792 Don't propose the same name for arguments of lambda on completion of function call with lambda template
• KT-29572 Smart completing anonymous object uses incorrect code style
• KT-25264 Freeze in Kotlin file on completion

IDE. Debugger

New Features

• KT-30740 Display more information about variables when breakpoint is set inside lambda expression

Fixes

• KT-8579 Debugger: Evaluate expression fails at typed arrays
• KT-10183 Debugger: receiver properties are not shown inline in extension function
• KT-11663 Assignment is not possible in Evaluate expression
• KT-11706 Attempts to evaluate java method calls on 'Array' instance in debugger fail with NoSuchMethodError
• KT-11888 Evaluate Expression for expression with synchronized
• KT-11938 Empty condition is marked as error
• KT-13188 Cannot evaluate expression with local extension function
• KT-14421 Debugger: breakpoint set on trivial if/while is not hit
• KT-15259 Debug: closing brace of object definition is considered executable; ISE: "Don't call this method for local declarations: OBJECT_DECLARATION" at LazyDeclarationResolver.getMemberScopeDeclaredIn()
• KT-19084 Breakpoints on Debugger altering Result
• KT-19556 Kotlin exception while debugging IJ plugin code
• KT-19980 Debug: evaluation fails for setter of member extention property
• KT-20560 Evaluate expression doesn't work for super method call
• KT-23526 In *.kts scripts, debugger ignores breakpoints in top-level statements and members
• KT-24914 AS: Uninitialized yet lazy properties called on first debug point reach
• KT-26742 Debugger can't evaluate expected top-level function from common code
• KT-30120 False positive "Unused equals expression" in evaluate expression window
• KT-30730 Missing tooltip for "Kotlin variables view" button
• KT-30919 Debugger's "Kotlin View" doesn't show variables inside lambdas
• KT-30976 Debugger: No access to receiver evaluating named parameters during call to extension function
• KT-31418 java.lang.ClassCastException : java.lang.annotation.Annotation[] cannot be cast to byte[]
• KT-31510 isDumb should be used only under read action: KotlinEvaluator
• KT-31702 Debugger can't stop on breakpoint on Unit expression from coroutine context
• KT-31709 Evaluate: "IllegalArgumentException: Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" with nested lambda member access
• KT-24829 Access to coroutineContext in 'Evaluate expression'

IDE. Gradle

• KT-19693 Import package prefix from Gradle
• KT-30667 Dependencies of a module on a multiplatform one with a JVM target and withJava() configured, are incorrectly resolved in IDE
• KT-32300 Add possibility to distinguish kotlin source root from java source root
• KT-31014 Gradle, JS: Webpack watch mode
• KT-31843 Memory leak caused by KOTLIN_TARGET_DATA_NODE on project reimport

IDE. Gradle. Script

• KT-31779 "Highlighting in scripts is not available"
• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-30974 Script dependencies resolution failed error while trying to use Kotlin for Gradle
• KT-31440 Add link to Gradle Kotlin DSL logs when script dependencies resolution process fails
• KT-32483 CNFE org.gradle.kotlin.dsl.KotlinBuildScript on creating new Gradle Kotlin project from wizard
• KT-21501 build.gradle.kts displays failures if not using java sdk for module

IDE. Inspections and Intentions

New Features

• KT-8958 ReplaceWith intention message could be more helpful in case of generic substitution
• KT-12515 Quickfix "by Delegates.notNull()" as replacement for "lateinit" for primitive type
• KT-14344 Suggest to replace manual range with explicit indices call or iteration over collection
• KT-17916 Import popup does not indicate deprecated classes
• KT-23501 Add intention for converting ordinary properties to 'lazy' and vise versa
• KT-25006 Add inspection "'equals()' between objects of inconvertible primitive / enum / string types"
• KT-27353 Quickfix to add a constructor parameter from parent class to child class
• KT-30124 Add inspection to replace java.util.Arrays.equals with contentEquals
• KT-30640 Add inspection for check/require/checkNotNull/requireNotNull
• KT-30775 Inspection for the case when one lateinit var overrides another lateinit var
• KT-31476 Improve "Create expect..." quickfix
• KT-31533 Make "Add operator modifier" an inspection instead of intention
• KT-31795 Inspection: simplify property setter with custom visibility
• KT-31924 Make "add import" intention more flexible based on caret position
• KT-30970 No warning for empty if operator and alsomethod

Fixes

• KT-12567 "Introduce 'when' subject" intention does not work for "this" in extension function
• KT-14369 "Replace elvis expression with 'if" intention produces boilerplate code for 'return' in RHS
• KT-16067 "Replace 'if' expression with elvis expression" suggests replacing an idiomatic code with non-idiomatic
• KT-19643 Tune or disable the FoldInitializerAndIfToElvis inspection
• KT-24439 No method imports suggested
• KT-25786 False positive "Not-null extension receiver of inline function can be made nullable" with operator fun invoke
• KT-25905 False positive for 'LeakingThis' on a method call in enum class body
• KT-27074 False positive "Foldable if-then" with Result type
• KT-27550 "Redundant explicit this" false positive with subclass and extension lambda
• KT-27563 Generate toString in common code shouldn't use java.util.Arrays
• KT-27822 Don't suggest might be const on actual member declaration
• KT-28595 "Assignment should be lifted out of 'if'" false negative for different but compatible derived types
• KT-29192 "Convert property to function" with explicit generic type loses getter body
• KT-29716 With both explicit and implicit package prefixes "Package name does not match containing directory" inspection suggests not usable quick fix
• KT-29731 Don't suggest Add val/var to parameter at expect class constructor
• KT-30191 "Lift out of if" intention isn't suggested for assignment of null
• KT-30197 ReplaceWith for deprecated function adds class literal/callable reference argument above unless it is used in substitution
• KT-30627 "Use property access syntax" produces red code if setter argument is a lambda with implicit SAM conversion
• KT-30804 Property declaration goes to annotation comment when removing only modifier using RemoveModifierFix
• KT-30975 ''when' has only 'else' branch and should be simplified' inspection removes subject variable definition used in else branch
• KT-31033 "Create expect ..." quick fix incorrectly works for a secondary constructor in a multiplatform project
• KT-31272 Expand "create expected ..." quick fix highlighting also to a primary constructor
• KT-31278 Inappropriate "Remove redundant .let call" inspection
• KT-31341 Incorrect quickfix "Replace with Kotlin analog" for conversion to an extension, where the first argument is an expression with an operation
• KT-31359 "Invalid property key" inspection false positive for a bundle with several properties files
• KT-31362 'Move variable declaration into when' quickfix comments left brace with EOL comment
• KT-31443 Remove braces intention places caret in a wrong place
• KT-31446 Incorrect quick fix “Create expected class" for inline class with parameter with actual
• KT-31518 Incorrect "Create expect function" for primary constructor
• KT-31673 Only when keyword should be highlighted in WhenWithOnlyElseInspection
• KT-31716 Decrease severity of PackageDirectoryMismatchInspection to INFO
• KT-31717 Decrease severity of RemoveCurlyBracesFromTemplateInspection
• KT-31816 "Package directive doesn't match file location" for root package is invisible in editor
• KT-31954 MoveVariableDeclarationIntoWhen should move the caret to the subject expression
• KT-32001 Wrong quickfixes for TOO_MANY_ARGUMENTS
• KT-32010 Convert ReplaceSingleLineLetIntention to inspections
• KT-32046 False negative "Redundant qualifier name" with class literal
• KT-32112 False positive "Redundant qualifier name"
• KT-32318 "Remove argument name" intention does not remove square braces for annotation vararg argument
• KT-32320 False negative "Redundant qualifier name" with local object
• KT-32347 Duplicative "Remove redundant 'public' modifier" suggestion for getter
• KT-32365 "Convert to sealed class" intention should not be suggested when no "class" keyword
• KT-32419 Spurious 'while' has empty body warning when body has explanatory comment
• KT-32506 False negative "Remove redundant qualifier name" with java.util.ArrayList<Int>()
• KT-32454 "Replace Java static method with Kotlin analog": invalid quick fix on 'abs()' function
• KT-26242 "Create test" intention does nothing in common module
• KT-27208 IDEA reports about the need to declare abstract or implement abstract method, but this method is @JvmStatic in an interface companion
• KT-27555 Create actual ... quick fix does nothing if the corresponding source set directory isn't created yet
• KT-28121 IDE: Warn on java files under "src/main/kotlin" or "src/test/kotlin" source roots
• KT-28295 Use languageSettings for a quick fix to enable experimental features in multiplatform projects
• KT-28529 Don't suggest commonMain source set as a target of create expected ... quick fix for a member of *Test source set
• KT-28746 “Create actual class” quick fix creates invalid file when is called from files located in package directory but don't have package name
• KT-30622 Add names to call arguments starting from given argument
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument
• KT-32705 "Create expect" quick fix adds actual modifier to a const/lateinit declaration without a warning
• KT-32967 Warning about incorrectly placed Java source file isn't automatically dismissed on move of the file to the proper source root

IDE. JS

• KT-31895 New Project wizard: Kotlin Gradle + Kotlin/JS for Node.js: incorrect DSL is inserted

IDE. KDoc

• KT-30985 Missing line break in quick doc for enum constant

IDE. Multiplatform

• KT-29757 IDE fails to import transitive dependency of a JVM module to a multiplatform one

IDE. Navigation

• KT-10215 Kotlin classes are listed after Java classes in the navigation bar

IDE. Refactorings

• KT-29720 Refactor / Move does not update package statement with implicit prefix
• KT-30762 Inline method produces invalid code for suspend functions with receiver
• KT-30748 100+ Seconds UI Freeze on performing a Move Refactoring on a file with a lot of usages (KotlinOptimizeImports in thread dump)

IDE. Scratch

• KT-23604 Scratch: end of line is wrongly indented with the end of scratch line output
• KT-27963 Make REPL mode in Scratch files incremental
• KT-29534 Line output jumps to the next line together with cursor
• KT-32791 "Access is allowed from event dispatch thread only" while working with a scratch file

IDE. Script

• KT-25187 Kotlin script in src: warning: classpath entry points to a non-existent location on JDK 9+
• KT-31152 Errors in IDE when different Java Sdk are set as Project SDK and as Gradle JVM
• KT-31521 CNFE „org.jetbrains.kotlin.idea.caches.project.ScriptBinariesScopeCache“ on creating new Gradle based project
• KT-31826 Gradle clean task causes IDEA to lose kotlin scripting configuration
• KT-31837 TargetPlatform for scripts should depends on scriptDefinition.additionalArguments
• KT-30690 Highlighting for scripts in diff view doesn't work for left part
• KT-32061 Check classpath jars before applying script compilation result from file attributes
• KT-32554 Freezes in ScriptDependenciesUpdater

IDE. Tests Support

• KT-30814 MPP, 191 platform: with Gradle test runner run configuration for platform test is created without tasks

IDE. Wizards

• KT-32105 MPP project wizard: add option for Kotlin Gradle DSL

JS. Tools

• KT-31527 Keep generating empty jsTest task
• KT-31565 Gradle/JS: npmResolve is never UP-TO-DATE
• KT-32326 Gradle, test runner: support postponing test running error reporting at the end of the build
• KT-32393 Gradle, JS: Resolve projects lazily
• KT-31560 Gradle: provide descriptions for JS tasks
• KT-31563 Gradle/JS: npmResolve fails with "Invalid version" when user project's version does not match npm rules
• KT-31566 Gradle/JS: with explicit call to nodejs { testTask { useNodeJs() } } configuration fails : "Could not find which method to invoke"
• KT-31694 Gradle, NPM, windows: creating symlink requires administrator privilege

Libraries

• KT-29372 measureTime that returns both the result of block and elapsed time
• KT-32083 Incorrect ReplaceWith annotation on kotlin.js.pow
• KT-12749 Provide Int.bitCount, Long.bitCount etc.
• KT-32359 Common Array.fill
• KT-33225 JS: Incorrect conversion of infinite Double to Long

Reflection

• KT-22923 Reflection getMemberProperties fails: kotlin.reflect.jvm.internal.KotlinReflectionInternalError
• KT-31318 "KotlinReflectionInternalError: Method is not supported" on accessing array class annotation parameter

Tools. Daemon

• KT-31550 NSME org.jetbrains.kotlin.com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem.clearHandlersCache()V on compileKotlin task with plugin from master
• KT-32490 Compiler daemon tests fail on windows due to directory name being too long
• KT-32950 Daemon should inherit "-XX:MaxMetaspaceSize" of client VM
• KT-32992 Enable assertions in Kotlin Compile Daemon
• KT-33027 Compilation with daemon fails, because IncrementalModuleInfo#serialVersionUID does not match

Tools. CLI

• KT-33177 Introduce compiler flags -Xinline-classes and -Xpolymorphic-signature as a higher priority than -XXLanguage

Tools. Compiler Plugins

• KT-28824 Add jvm-abi-gen-embeddable for use with embeddable compiler
• KT-31279 JPS build with compiler plugin and "Keep compiler alive = No" fails with CCE: "Cannot cast NoArgComponentRegistrar to ComponentRegistrar" at ServiceLoaderLite.loadImplementations()
• KT-32346 kotlinx.serialization: Performance problems with completion/intellisense

Tools. Gradle

New Features

• KT-26655 Precise metadata publishing and consumption for new MPP
• KT-31018 Gradle, JS: yarn
• KT-31703 Gradle, JS: automatically download d.ts and generate kotlin/js external declarations using dukat
• KT-31890 Gradle, JS, webpack: provide property with full bundle file path
• KT-32015 Gradle, JS: resolve configuration only while executing tasks of specific projects
• KT-32136 Gradle, test runner: handle case when test runtime exits abnormally
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-30573 Gradle, JS: enable source maps by default, change paths relative to node_modules directory
• KT-30747 Gradle, JS tests: provide option to disable test configuration per target
• KT-31010 Gradle, JS tests: Mocha
• KT-31011 Gradle, JS tests: Karma
• KT-31013 Gradle, JS: Webpack
• KT-31016 Gradle: yarn downloading
• KT-31017 Gradle, yarn: support workspaces
• KT-31697 Gradle, NPM: report about clashes in packages_imported

Performance Improvements

• KT-29538 AndroidSubPlugin#getCommonResDirectories is very slow

Fixes

• KT-29343 Kotlin MPP source set dependencies are not properly propagated to tests in Android projects
• KT-30691 Gradle, JS tests: Parent operation with id 947 not available when all tests passed
• KT-31917 Gradle, JS: transitive dependency between compilations in same project doesn't work
• KT-31985 Gradle, JS: webpack not working on windows
• KT-32072 Gradle, JS: browser() in DSL triggers project.evaluate()
• KT-32204 In an MPP, a dependency that is added to a non-root source set is incorrectly analyzed for source sets visibility
• KT-32225 In an MPP, if a dependency is added to a source set that does not take part in published compilations, it is not correctly analyzed in source set visibility inference
• KT-32564 Provide a flag to enable/disable hierarchical multiplatform mechanism in Gradle
• KT-31023 Update Gradle module metadata warning in MPP publishing
• KT-31696 Gradle, NPM: select one version between tools and all of compile configurations
• KT-31891 Gradle: JS or Native tests execution: build --scan fails with ISE "Expected attachment of type ... but did not find it"
• KT-32210 Kapt randomly fails with java.io.UTFDataFormatException
• KT-32706 Gradle target "jsBrowserWebpack" should use output of JS compile task as input
• KT-32697 [Tests] org.jetbrains.kotlin.gradle.SubpluginsIT

Tools. Incremental Compile

• KT-31310 Incremental build of Kotlin/JS project fails with KNPE at IncrementalJsCache.nonDirtyPackageParts()

Tools. J2K

New Features

• KT-30776 New J2K
• KT-31836 Suggest user to configure Kotlin in the project when running new J2K file conversion
• KT-32512 ReplaceJavaStaticMethodWithKotlinAnalogInspection: add more cases for java.util.Arrays

Fixes

• KT-15791 J2K converts class literals including redundant generic <*>
• KT-31234 New J2K: Exception occurs on converting Java class to Kotlin
• KT-31250 J2K: caret position of original file is preserved, adding spaces to resulting file
• KT-31251 J2K: Java class with members is converted to Kotlin class with final constructor
• KT-31252 J2K: resulted file is not formatted
• KT-31254 J2K: resulted source uses full qualified references instead of imports
• KT-31255 J2K: redundant modifiers in resulted source
• KT-31726 New J2K converts annotation with array parameter to single value parameter
• KT-31809 "Attempt to modify PSI for non-committed Document!" exception and broken kotlin file after new J2K conversion
• KT-31821 J2K: IDEA Ultimate: local variable: CCE: "PsiLocalVariableImpl cannot be cast to class JvmAnnotatedElement" at JavaToJKTreeBuilder$DeclarationMapper.toJK()
• KT-32436 NewJ2K generic field is not initialized after convertion
• KT-19327 Java to Kotlin converter fails to convert code using Java 8 Stream API
• KT-21467 Convert To Kotlin fails when using chained stream.flatmap methods
• KT-24677 j2k creates nullable type for child function but keeps not null type for parent function
• KT-32572 New J2K: Map with complex type as parameter is wrongly converted
• KT-32602 J2K: no conversion of String.length() method call to property access of existing String property
• KT-32604 kotlin.NotImplementedError exception occurs on converting Java call of toString method of data class to Kotlin
• KT-32609 New J2K: Comparable class is wrongly converted to Kotlin if parameter of compareTo marked with @NotNull annotation
• KT-32693 New J2K is throwing „Read access is allowed from event dispatch thread or inside read-action only“ on converting Java code inside Evaluate Expression window
• KT-32702 New J2K: lambda with method reference is converted to lamdba with excessive parameter declaration
• KT-32835 New J2K: NumberFormatException occurs on converting binary literals
• KT-32837 J2K: NumberFormatException occurs on converting literals with underscore characters
• KT-22412 J2K: Intention to replace if(...) throw IAE with require

Tools. JPS

• KT-27181 Compiler arguments are listed twice on JPS build of Gradle-based project
• KT-13563 Kotlin jps-plugin should allow to instrument bytecode from Intellij IDEA.

Tools. REPL

• KT-15125 Support JSR 223 bindings directly via script variables
• KT-32085 Kotlinc REPL: "java.lang.NoClassDefFoundError: org/jline/reader/LineReaderBuilder"

Tools. Scripts

• KT-28137 Implement result/return value for the regular (non-REPL) scripts

Tools. kapt

• KT-30578 build/generated/source/kaptKotlin is added as source directory to main instead of jvmMain when jvm { withJava() } is configured in a multiplatform project
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31127 Kotlin-generating processor which uses Filer API breaks JavaCompile task
• KT-31378 v1.3.31: NoSuchElementException in kapt when kapt.incremental.apt=true
• KT-32535 Kapt aptMode=compile don't include files generated at kapt.kotlin.generated as sources to compile
• KT-31471 KAPT prints "IncrementalProcessor" instead of processor name in verbose mode

Kotlin Native

Related Kotlin Native changelog can be found separately.

CHANGELOG

1.3.50

Compiler

• KT-12787 Debugger: Generate line number at end of function (to set a breakpoint on the last line of the block)
• KT-23675 "Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" when classes are defined inside an anonymous extension function and access a field of the extension function's this instance
• KT-24596 Refactor / Inline const property does not insert its value into usage in annotation
• KT-25497 kotlinx.serialization - throws Backend Internal error exception during code generation of sealed classes
• KT-28927 "IllegalStateException: Arrays of class literals are not supported yet" in AnnotationDeserializer.resolveArrayElementType
• KT-31070 IndexOutOfBoundsException in Analyzer with @JvmOverloads constructor with 34+ parameters
• KT-31265 FIR: experimental compiler
• KT-31535 False positives from compiler warning IMPLICIT_NOTHING_AS_TYPE_PARAMETER
• KT-31969 NI: false positive USELESS_ELVIS with multiple elvis calls
• KT-32044 For loop over full UByte range terminates at UInt bound.
• KT-25432 No smartcast on qualifier expression of captured type
• KT-30796 psi2ir generates IrErrorType for elvis with generic type having nullable upper-bound when expected type is not nullable
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31347 "IndexOutOfBoundsException: Insufficient maximum stack size" with crossinline and suspend
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []
• KT-31734 Empty parameter list required on Annotations of function types
• KT-32434 New type inference fails for Caffeine Cache
• KT-32452 Kotlin 1.3.40 - problem in IDE with new type inference and suspending method reference

Docs & Examples

• KT-16602 Provide examples of sorting API usage
• KT-32353 Document order of array elements initialization

IDE

New Features

• KT-28098 Insert space after automatically closed right brace of nested lambda to follow code style

Fixes

• KT-16476 Extend selection (Select Word) doesn't select just KDoc if cursor is just before the KDoc
• KT-21374 Imports optimized tooltip is displayed, even if no changes were made
• KT-21422 IDE can't import class from root package
• KT-27344 MPP: jvmWithJava: no IDE module dependency is created between Kotlin test and Java main on import; Gradle build is successful
• KT-29667 Kotlin update settings has wrong looking text boxes for versions
• KT-30133 Update copyright creates duplicates for build.gradle.kts files
• KT-30782 'Show Method Separators' does not separate expression body Kotlin functions
• KT-31022 Quick definition does not show Kotlin code in Java files
• KT-31499 "Extend selection" selects escaped identifier name together with backticks
• KT-31595 "Complete current statement" for method call closes brace at wrong place
• KT-31637 NPE in IDE when organizing imports
• KT-31786 KNPE at copy attempt due to kdoc reference
• KT-32276 Fix flaky test for ultra light classes
• KT-32364 Remove deprecated usages of OUT_OF_CODE_BLOCK_MODIFICATION_COUNT and write a replacement for Kotlin language
• KT-32370 Lambdas should have implicit return in Kotlin Uast
• KT-12096 Spring: rename of Kotlin bean defined in @Bean annotation fails
• KT-28193 Exception: Mirror element should never be calculated for light classes generated from a single file
• KT-28822 Dependencies in Kotlin MPP project could be wrongly resolved if project was not build before import
• KT-29267 Enable ultra-light classes by default
• KT-31129 Call only Kotlin-specific reference contributors for getting Kotlin references from PSI
• KT-32082 Kotlin facet: 1.3.40 plugin does not properly read target platform settings of 1.3.50 plugin

IDE. Completion

• KT-9792 Don't propose the same name for arguments of lambda on completion of function call with lambda template
• KT-29572 Smart completing anonymous object uses incorrect code style
• KT-25264 Freeze in Kotlin file on completion

IDE. Debugger

New Features

• KT-30740 Display more information about variables when breakpoint is set inside lambda expression

Fixes

• KT-8579 Debugger: Evaluate expression fails at typed arrays
• KT-10183 Debugger: receiver properties are not shown inline in extension function
• KT-11663 Assignment is not possible in Evaluate expression
• KT-11706 Attempts to evaluate java method calls on 'Array' instance in debugger fail with NoSuchMethodError
• KT-11888 Evaluate Expression for expression with synchronized
• KT-11938 Empty condition is marked as error
• KT-13188 Cannot evaluate expression with local extension function
• KT-14421 Debugger: breakpoint set on trivial if/while is not hit
• KT-15259 Debug: closing brace of object definition is considered executable; ISE: "Don't call this method for local declarations: OBJECT_DECLARATION" at LazyDeclarationResolver.getMemberScopeDeclaredIn()
• KT-19084 Breakpoints on Debugger altering Result
• KT-19556 Kotlin exception while debugging IJ plugin code
• KT-19980 Debug: evaluation fails for setter of member extention property
• KT-20560 Evaluate expression doesn't work for super method call
• KT-23526 In *.kts scripts, debugger ignores breakpoints in top-level statements and members
• KT-24914 AS: Uninitialized yet lazy properties called on first debug point reach
• KT-26742 Debugger can't evaluate expected top-level function from common code
• KT-30120 False positive "Unused equals expression" in evaluate expression window
• KT-30730 Missing tooltip for "Kotlin variables view" button
• KT-30919 Debugger's "Kotlin View" doesn't show variables inside lambdas
• KT-30976 Debugger: No access to receiver evaluating named parameters during call to extension function
• KT-31418 java.lang.ClassCastException : java.lang.annotation.Annotation[] cannot be cast to byte[]
• KT-31510 isDumb should be used only under read action: KotlinEvaluator
• KT-31702 Debugger can't stop on breakpoint on Unit expression from coroutine context
• KT-31709 Evaluate: "IllegalArgumentException: Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" with nested lambda member access
• KT-24829 Access to coroutineContext in 'Evaluate expression'

IDE. Gradle

• KT-19693 Import package prefix from Gradle
• KT-30667 Dependencies of a module on a multiplatform one with a JVM target and withJava() configured, are incorrectly resolved in IDE
• KT-32300 Add possibility to distinguish kotlin source root from java source root
• KT-31014 Gradle, JS: Webpack watch mode
• KT-31843 Memory leak caused by KOTLIN_TARGET_DATA_NODE on project reimport

IDE. Gradle. Script

• KT-31779 "Highlighting in scripts is not available"
• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-30974 Script dependencies resolution failed error while trying to use Kotlin for Gradle
• KT-31440 Add link to Gradle Kotlin DSL logs when script dependencies resolution process fails
• KT-32483 CNFE org.gradle.kotlin.dsl.KotlinBuildScript on creating new Gradle Kotlin project from wizard

IDE. Inspections and Intentions

New Features

• KT-8958 ReplaceWith intention message could be more helpful in case of generic substitution
• KT-12515 Quickfix "by Delegates.notNull()" as replacement for "lateinit" for primitive type
• KT-14344 Suggest to replace manual range with explicit indices call or iteration over collection
• KT-17916 Import popup does not indicate deprecated classes
• KT-23501 Add intention for converting ordinary properties to 'lazy' and vise versa
• KT-25006 Add inspection "'equals()' between objects of inconvertible primitive / enum / string types"
• KT-27353 Quickfix to add a constructor parameter from parent class to child class
• KT-30124 Add inspection to replace java.util.Arrays.equals with contentEquals
• KT-30640 Add inspection for check/require/checkNotNull/requireNotNull
• KT-30775 Inspection for the case when one lateinit var overrides another lateinit var
• KT-31476 Improve "Create expect..." quickfix
• KT-31533 Make "Add operator modifier" an inspection instead of intention
• KT-31795 Inspection: simplify property setter with custom visibility
• KT-31924 Make "add import" intention more flexible based on caret position
• KT-30970 No warning for empty if operator and alsomethod

Fixes

• KT-12567 "Introduce 'when' subject" intention does not work for "this" in extension function
• KT-14369 "Replace elvis expression with 'if" intention produces boilerplate code for 'return' in RHS
• KT-16067 "Replace 'if' expression with elvis expression" suggests replacing an idiomatic code with non-idiomatic
• KT-19643 Tune or disable the FoldInitializerAndIfToElvis inspection
• KT-24439 No method imports suggested
• KT-25786 False positive "Not-null extension receiver of inline function can be made nullable" with operator fun invoke
• KT-25905 False positive for 'LeakingThis' on a method call in enum class body
• KT-27074 False positive "Foldable if-then" with Result type
• KT-27550 "Redundant explicit this" false positive with subclass and extension lambda
• KT-27563 Generate toString in common code shouldn't use java.util.Arrays
• KT-27822 Don't suggest might be const on actual member declaration
• KT-28595 "Assignment should be lifted out of 'if'" false negative for different but compatible derived types
• KT-29192 "Convert property to function" with explicit generic type loses getter body
• KT-29716 With both explicit and implicit package prefixes "Package name does not match containing directory" inspection suggests not usable quick fix
• KT-29731 Don't suggest Add val/var to parameter at expect class constructor
• KT-30191 "Lift out of if" intention isn't suggested for assignment of null
• KT-30197 ReplaceWith for deprecated function adds class literal/callable reference argument above unless it is used in substitution
• KT-30627 "Use property access syntax" produces red code if setter argument is a lambda with implicit SAM conversion
• KT-30804 Property declaration goes to annotation comment when removing only modifier using RemoveModifierFix
• KT-30975 ''when' has only 'else' branch and should be simplified' inspection removes subject variable definition used in else branch
• KT-31033 "Create expect ..." quick fix incorrectly works for a secondary constructor in a multiplatform project
• KT-31272 Expand "create expected ..." quick fix highlighting also to a primary constructor
• KT-31278 Inappropriate "Remove redundant .let call" inspection
• KT-31341 Incorrect quickfix "Replace with Kotlin analog" for conversion to an extension, where the first argument is an expression with an operation
• KT-31359 "Invalid property key" inspection false positive for a bundle with several properties files
• KT-31362 'Move variable declaration into when' quickfix comments left brace with EOL comment
• KT-31443 Remove braces intention places caret in a wrong place
• KT-31446 Incorrect quick fix “Create expected class" for inline class with parameter with actual
• KT-31518 Incorrect "Create expect function" for primary constructor
• KT-31673 Only when keyword should be highlighted in WhenWithOnlyElseInspection
• KT-31716 Decrease severity of PackageDirectoryMismatchInspection to INFO
• KT-31717 Decrease severity of RemoveCurlyBracesFromTemplateInspection
• KT-31816 "Package directive doesn't match file location" for root package is invisible in editor
• KT-31954 MoveVariableDeclarationIntoWhen should move the caret to the subject expression
• KT-32001 Wrong quickfixes for TOO_MANY_ARGUMENTS
• KT-32010 Convert ReplaceSingleLineLetIntention to inspections
• KT-32046 False negative "Redundant qualifier name" with class literal
• KT-32112 False positive "Redundant qualifier name"
• KT-32318 "Remove argument name" intention does not remove square braces for annotation vararg argument
• KT-32320 False negative "Redundant qualifier name" with local object
• KT-32347 Duplicative "Remove redundant 'public' modifier" suggestion for getter
• KT-32365 "Convert to sealed class" intention should not be suggested when no "class" keyword
• KT-32419 Spurious 'while' has empty body warning when body has explanatory comment
• KT-32506 False negative "Remove redundant qualifier name" with java.util.ArrayList<Int>()
• KT-32454 "Replace Java static method with Kotlin analog": invalid quick fix on 'abs()' function
• KT-26242 "Create test" intention does nothing in common module
• KT-27208 IDEA reports about the need to declare abstract or implement abstract method, but this method is @JvmStatic in an interface companion
• KT-27555 Create actual ... quick fix does nothing if the corresponding source set directory isn't created yet
• KT-28121 IDE: Warn on java files under "src/main/kotlin" or "src/test/kotlin" source roots
• KT-28295 Use languageSettings for a quick fix to enable experimental features in multiplatform projects
• KT-28529 Don't suggest commonMain source set as a target of create expected ... quick fix for a member of *Test source set
• KT-28746 “Create actual class” quick fix creates invalid file when is called from files located in package directory but don't have package name
• KT-30622 Add names to call arguments starting from given argument
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument
• KT-32705 "Create expect" quick fix adds actual modifier to a const/lateinit declaration without a warning
• KT-32967 Warning about incorrectly placed Java source file isn't automatically dismissed on move of the file to the proper source root

IDE. JS

• KT-31895 New Project wizard: Kotlin Gradle + Kotlin/JS for Node.js: incorrect DSL is inserted

IDE. KDoc

• KT-30985 Missing line break in quick doc for enum constant

IDE. Multiplatform

• KT-29757 IDE fails to import transitive dependency of a JVM module to a multiplatform one

IDE. Navigation

• KT-10215 Kotlin classes are listed after Java classes in the navigation bar

IDE. Refactorings

• KT-29720 Refactor / Move does not update package statement with implicit prefix
• KT-30762 Inline method produces invalid code for suspend functions with receiver
• KT-30748 100+ Seconds UI Freeze on performing a Move Refactoring on a file with a lot of usages (KotlinOptimizeImports in thread dump)

IDE. Scratch

• KT-23604 Scratch: end of line is wrongly indented with the end of scratch line output
• KT-27963 Make REPL mode in Scratch files incremental
• KT-29534 Line output jumps to the next line together with cursor

IDE. Script

• KT-25187 Kotlin script in src: warning: classpath entry points to a non-existent location on JDK 9+
• KT-31152 Errors in IDE when different Java Sdk are set as Project SDK and as Gradle JVM
• KT-31521 CNFE „org.jetbrains.kotlin.idea.caches.project.ScriptBinariesScopeCache“ on creating new Gradle based project
• KT-31826 Gradle clean task causes IDEA to lose kotlin scripting configuration
• KT-31837 TargetPlatform for scripts should depends on scriptDefinition.additionalArguments
• KT-30690 Highlighting for scripts in diff view doesn't work for left part
• KT-32061 Check classpath jars before applying script compilation result from file attributes
• KT-32554 Freezes in ScriptDependenciesUpdater

IDE. Tests Support

• KT-30814 MPP, 191 platform: with Gradle test runner run configuration for platform test is created without tasks

IDE. Wizards

• KT-32105 MPP project wizard: add option for Kotlin Gradle DSL

JS. Tools

• KT-31527 Keep generating empty jsTest task
• KT-31565 Gradle/JS: npmResolve is never UP-TO-DATE
• KT-32326 Gradle, test runner: support postponing test running error reporting at the end of the build
• KT-32393 Gradle, JS: Resolve projects lazily
• KT-31560 Gradle: provide descriptions for JS tasks
• KT-31563 Gradle/JS: npmResolve fails with "Invalid version" when user project's version does not match npm rules
• KT-31566 Gradle/JS: with explicit call to nodejs { testTask { useNodeJs() } } configuration fails : "Could not find which method to invoke"
• KT-31694 Gradle, NPM, windows: creating symlink requires administrator privilege

Libraries

• KT-29372 measureTime that returns both the result of block and elapsed time
• KT-32083 Incorrect ReplaceWith annotation on kotlin.js.pow
• KT-12749 Provide Int.bitCount, Long.bitCount etc.

Reflection

• KT-22923 Reflection getMemberProperties fails: kotlin.reflect.jvm.internal.KotlinReflectionInternalError
• KT-31318 "KotlinReflectionInternalError: Method is not supported" on accessing array class annotation parameter

Tools. Daemon

• KT-31550 NSME org.jetbrains.kotlin.com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem.clearHandlersCache()V on compileKotlin task with plugin from master
• KT-32490 Compiler daemon tests fail on windows due to directory name being too long
• KT-32950 Daemon should inherit "-XX:MaxMetaspaceSize" of client VM
• KT-32992 Enable assertions in Kotlin Compile Daemon
• KT-33027 Compilation with daemon fails, because IncrementalModuleInfo#serialVersionUID does not match

Tools. Gradle

New Features

• KT-26655 Precise metadata publishing and consumption for new MPP
• KT-31018 Gradle, JS: yarn
• KT-31703 Gradle, JS: automatically download d.ts and generate kotlin/js external declarations using dukat
• KT-31890 Gradle, JS, webpack: provide property with full bundle file path
• KT-32015 Gradle, JS: resolve configuration only while executing tasks of specific projects
• KT-32136 Gradle, test runner: handle case when test runtime exits abnormally
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-30573 Gradle, JS: enable source maps by default, change paths relative to node_modules directory
• KT-30747 Gradle, JS tests: provide option to disable test configuration per target
• KT-31010 Gradle, JS tests: Mocha
• KT-31011 Gradle, JS tests: Karma
• KT-31013 Gradle, JS: Webpack
• KT-31016 Gradle: yarn downloading
• KT-31017 Gradle, yarn: support workspaces
• KT-31697 Gradle, NPM: report about clashes in packages_imported

Performance Improvements

• KT-29538 AndroidSubPlugin#getCommonResDirectories is very slow

Fixes

• KT-29343 Kotlin MPP source set dependencies are not properly propagated to tests in Android projects
• KT-30691 Gradle, JS tests: Parent operation with id 947 not available when all tests passed
• KT-31917 Gradle, JS: transitive dependency between compilations in same project doesn't work
• KT-31985 Gradle, JS: webpack not working on windows
• KT-32072 Gradle, JS: browser() in DSL triggers project.evaluate()
• KT-32204 In an MPP, a dependency that is added to a non-root source set is incorrectly analyzed for source sets visibility
• KT-32225 In an MPP, if a dependency is added to a source set that does not take part in published compilations, it is not correctly analyzed in source set visibility inference
• KT-32564 Provide a flag to enable/disable hierarchical multiplatform mechanism in Gradle
• KT-31023 Update Gradle module metadata warning in MPP publishing
• KT-31696 Gradle, NPM: select one version between tools and all of compile configurations
• KT-31891 Gradle: JS or Native tests execution: build --scan fails with ISE "Expected attachment of type ... but did not find it"
• KT-32210 Kapt randomly fails with java.io.UTFDataFormatException
• KT-32706 Gradle target "jsBrowserWebpack" should use output of JS compile task as input

Tools. Incremental Compile

• KT-31310 Incremental build of Kotlin/JS project fails with KNPE at IncrementalJsCache.nonDirtyPackageParts()

Tools. J2K

New Features

• KT-30776 New J2K
• KT-31836 Suggest user to configure Kotlin in the project when running new J2K file conversion
• KT-32512 ReplaceJavaStaticMethodWithKotlinAnalogInspection: add more cases for java.util.Arrays

Fixes

• KT-15791 J2K converts class literals including redundant generic <*>
• KT-31234 New J2K: Exception occurs on converting Java class to Kotlin
• KT-31250 J2K: caret position of original file is preserved, adding spaces to resulting file
• KT-31251 J2K: Java class with members is converted to Kotlin class with final constructor
• KT-31252 J2K: resulted file is not formatted
• KT-31254 J2K: resulted source uses full qualified references instead of imports
• KT-31255 J2K: redundant modifiers in resulted source
• KT-31726 New J2K converts annotation with array parameter to single value parameter
• KT-31809 "Attempt to modify PSI for non-committed Document!" exception and broken kotlin file after new J2K conversion
• KT-31821 J2K: IDEA Ultimate: local variable: CCE: "PsiLocalVariableImpl cannot be cast to class JvmAnnotatedElement" at JavaToJKTreeBuilder$DeclarationMapper.toJK()
• KT-32436 NewJ2K generic field is not initialized after convertion
• KT-19327 Java to Kotlin converter fails to convert code using Java 8 Stream API
• KT-21467 Convert To Kotlin fails when using chained stream.flatmap methods
• KT-24677 j2k creates nullable type for child function but keeps not null type for parent function
• KT-32572 New J2K: Map with complex type as parameter is wrongly converted
• KT-32602 J2K: no conversion of String.length() method call to property access of existing String property
• KT-32604 kotlin.NotImplementedError exception occurs on converting Java call of toString method of data class to Kotlin
• KT-32609 New J2K: Comparable class is wrongly converted to Kotlin if parameter of compareTo marked with @NotNull annotation
• KT-32693 New J2K is throwing „Read access is allowed from event dispatch thread or inside read-action only“ on converting Java code inside Evaluate Expression window
• KT-32702 New J2K: lambda with method reference is converted to lamdba with excessive parameter declaration
• KT-32835 New J2K: NumberFormatException occurs on converting binary literals
• KT-32837 J2K: NumberFormatException occurs on converting literals with underscore characters

Tools. JPS

• KT-27181 Compiler arguments are listed twice on JPS build of Gradle-based project
• KT-13563 Kotlin jps-plugin should allow to instrument bytecode from Intellij IDEA.

Tools. REPL

• KT-15125 Support JSR 223 bindings directly via script variables
• KT-32085 Kotlinc REPL: "java.lang.NoClassDefFoundError: org/jline/reader/LineReaderBuilder"

Tools. Scripts

• KT-28137 Implement result/return value for the regular (non-REPL) scripts

Tools. kapt

• KT-30578 build/generated/source/kaptKotlin is added as source directory to main instead of jvmMain when jvm { withJava() } is configured in a multiplatform project
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31127 Kotlin-generating processor which uses Filer API breaks JavaCompile task
• KT-31378 v1.3.31: NoSuchElementException in kapt when kapt.incremental.apt=true
• KT-32535 Kapt aptMode=compile don't include files generated at kapt.kotlin.generated as sources to compile

Kotlin Native

Related Kotlin Native changelog can be found separately.

1.3.50

Compiler

• KT-12787 Debugger: Generate line number at end of function (to set a breakpoint on the last line of the block)
• KT-23675 "Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" when classes are defined inside an anonymous extension function and access a field of the extension function's this instance
• KT-24596 Refactor / Inline const property does not insert its value into usage in annotation
• KT-25497 kotlinx.serialization - throws Backend Internal error exception during code generation of sealed classes
• KT-28927 "IllegalStateException: Arrays of class literals are not supported yet" in AnnotationDeserializer.resolveArrayElementType
• KT-31070 IndexOutOfBoundsException in Analyzer with @JvmOverloads constructor with 34+ parameters
• KT-31265 FIR: experimental compiler
• KT-31535 False positives from compiler warning IMPLICIT_NOTHING_AS_TYPE_PARAMETER
• KT-31969 NI: false positive USELESS_ELVIS with multiple elvis calls
• KT-32044 For loop over full UByte range terminates at UInt bound.

IDE

New Features

• KT-28098 Insert space after automatically closed right brace of nested lambda to follow code style

Fixes

• KT-16476 Extend selection (Select Word) doesn't select just KDoc if cursor is just before the KDoc
• KT-21374 Imports optimized tooltip is displayed, even if no changes were made
• KT-21422 IDE can't import class from root package
• KT-27344 MPP: jvmWithJava: no IDE module dependency is created between Kotlin test and Java main on import; Gradle build is successful
• KT-29667 Kotlin update settings has wrong looking text boxes for versions
• KT-30133 Update copyright creates duplicates for build.gradle.kts files
• KT-30782 'Show Method Separators' does not separate expression body Kotlin functions
• KT-31022 Quick definition does not show Kotlin code in Java files
• KT-31499 "Extend selection" selects escaped identifier name together with backticks
• KT-31595 "Complete current statement" for method call closes brace at wrong place
• KT-31637 NPE in IDE when organizing imports
• KT-31786 KNPE at copy attempt due to kdoc reference
• KT-32276 Fix flaky test for ultra light classes
• KT-32364 Remove deprecated usages of OUT_OF_CODE_BLOCK_MODIFICATION_COUNT and write a replacement for Kotlin language
• KT-32370 Lambdas should have implicit return in Kotlin Uast

IDE. Completion

• KT-9792 Don't propose the same name for arguments of lambda on completion of function call with lambda template
• KT-29572 Smart completing anonymous object uses incorrect code style

IDE. Debugger

New Features

• KT-30740 Display more information about variables when breakpoint is set inside lambda expression

Fixes

• KT-8579 Debugger: Evaluate expression fails at typed arrays
• KT-10183 Debugger: receiver properties are not shown inline in extension function
• KT-11663 Assignment is not possible in Evaluate expression
• KT-11706 Attempts to evaluate java method calls on 'Array' instance in debugger fail with NoSuchMethodError
• KT-11888 Evaluate Expression for expression with synchronized
• KT-11938 Empty condition is marked as error
• KT-13188 Cannot evaluate expression with local extension function
• KT-14421 Debugger: breakpoint set on trivial if/while is not hit
• KT-15259 Debug: closing brace of object definition is considered executable; ISE: "Don't call this method for local declarations: OBJECT_DECLARATION" at LazyDeclarationResolver.getMemberScopeDeclaredIn()
• KT-19084 Breakpoints on Debugger altering Result
• KT-19556 Kotlin exception while debugging IJ plugin code
• KT-19980 Debug: evaluation fails for setter of member extention property
• KT-20560 Evaluate expression doesn't work for super method call
• KT-23526 In *.kts scripts, debugger ignores breakpoints in top-level statements and members
• KT-24914 AS: Uninitialized yet lazy properties called on first debug point reach
• KT-26742 Debugger can't evaluate expected top-level function from common code
• KT-30120 False positive "Unused equals expression" in evaluate expression window
• KT-30730 Missing tooltip for "Kotlin variables view" button
• KT-30919 Debugger's "Kotlin View" doesn't show variables inside lambdas
• KT-30976 Debugger: No access to receiver evaluating named parameters during call to extension function
• KT-31418 java.lang.ClassCastException : java.lang.annotation.Annotation[] cannot be cast to byte[]
• KT-31510 isDumb should be used only under read action: KotlinEvaluator
• KT-31702 Debugger can't stop on breakpoint on Unit expression from coroutine context
• KT-31709 Evaluate: "IllegalArgumentException: Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" with nested lambda member access

IDE. Gradle

• KT-19693 Import package prefix from Gradle
• KT-30667 Dependencies of a module on a multiplatform one with a JVM target and withJava() configured, are incorrectly resolved in IDE
• KT-32300 Add possibility to distinguish kotlin source root from java source root

IDE. Gradle. Script

• KT-31779 "Highlighting in scripts is not available"

IDE. Inspections and Intentions

New Features

• KT-8958 ReplaceWith intention message could be more helpful in case of generic substitution
• KT-12515 Quickfix "by Delegates.notNull()" as replacement for "lateinit" for primitive type
• KT-14344 Suggest to replace manual range with explicit indices call or iteration over collection
• KT-17916 Import popup does not indicate deprecated classes
• KT-23501 Add intention for converting ordinary properties to 'lazy' and vise versa
• KT-25006 Add inspection "'equals()' between objects of inconvertible primitive / enum / string types"
• KT-27353 Quickfix to add a constructor parameter from parent class to child class
• KT-30124 Add inspection to replace java.util.Arrays.equals with contentEquals
• KT-30640 Add inspection for check/require/checkNotNull/requireNotNull
• KT-30775 Inspection for the case when one lateinit var overrides another lateinit var
• KT-31476 Improve "Create expect..." quickfix
• KT-31533 Make "Add operator modifier" an inspection instead of intention
• KT-31795 Inspection: simplify property setter with custom visibility
• KT-31924 Make "add import" intention more flexible based on caret position

Fixes

• KT-12567 "Introduce 'when' subject" intention does not work for "this" in extension function
• KT-14369 "Replace elvis expression with 'if" intention produces boilerplate code for 'return' in RHS
• KT-16067 "Replace 'if' expression with elvis expression" suggests replacing an idiomatic code with non-idiomatic
• KT-19643 Tune or disable the FoldInitializerAndIfToElvis inspection
• KT-24439 No method imports suggested
• KT-25786 False positive "Not-null extension receiver of inline function can be made nullable" with operator fun invoke
• KT-25905 False positive for 'LeakingThis' on a method call in enum class body
• KT-27074 False positive "Foldable if-then" with Result type
• KT-27550 "Redundant explicit this" false positive with subclass and extension lambda
• KT-27563 Generate toString in common code shouldn't use java.util.Arrays
• KT-27822 Don't suggest might be const on actual member declaration
• KT-28595 "Assignment should be lifted out of 'if'" false negative for different but compatible derived types
• KT-29192 "Convert property to function" with explicit generic type loses getter body
• KT-29716 With both explicit and implicit package prefixes "Package name does not match containing directory" inspection suggests not usable quick fix
• KT-29731 Don't suggest Add val/var to parameter at expect class constructor
• KT-30191 "Lift out of if" intention isn't suggested for assignment of null
• KT-30197 ReplaceWith for deprecated function adds class literal/callable reference argument above unless it is used in substitution
• KT-30627 "Use property access syntax" produces red code if setter argument is a lambda with implicit SAM conversion
• KT-30804 Property declaration goes to annotation comment when removing only modifier using RemoveModifierFix
• KT-30975 ''when' has only 'else' branch and should be simplified' inspection removes subject variable definition used in else branch
• KT-31033 "Create expect ..." quick fix incorrectly works for a secondary constructor in a multiplatform project
• KT-31272 Expand "create expected ..." quick fix highlighting also to a primary constructor
• KT-31278 Inappropriate "Remove redundant .let call" inspection
• KT-31341 Incorrect quickfix "Replace with Kotlin analog" for conversion to an extension, where the first argument is an expression with an operation
• KT-31359 "Invalid property key" inspection false positive for a bundle with several properties files
• KT-31362 'Move variable declaration into when' quickfix comments left brace with EOL comment
• KT-31443 Remove braces intention places caret in a wrong place
• KT-31446 Incorrect quick fix “Create expected class" for inline class with parameter with actual
• KT-31518 Incorrect "Create expect function" for primary constructor
• KT-31673 Only when keyword should be highlighted in WhenWithOnlyElseInspection
• KT-31716 Decrease severity of PackageDirectoryMismatchInspection to INFO
• KT-31717 Decrease severity of RemoveCurlyBracesFromTemplateInspection
• KT-31816 "Package directive doesn't match file location" for root package is invisible in editor
• KT-31954 MoveVariableDeclarationIntoWhen should move the caret to the subject expression
• KT-32001 Wrong quickfixes for TOO_MANY_ARGUMENTS
• KT-32010 Convert ReplaceSingleLineLetIntention to inspections
• KT-32046 False negative "Redundant qualifier name" with class literal
• KT-32112 False positive "Redundant qualifier name"
• KT-32318 "Remove argument name" intention does not remove square braces for annotation vararg argument
• KT-32320 False negative "Redundant qualifier name" with local object
• KT-32347 Duplicative "Remove redundant 'public' modifier" suggestion for getter
• KT-32365 "Convert to sealed class" intention should not be suggested when no "class" keyword
• KT-32419 Spurious 'while' has empty body warning when body has explanatory comment
• KT-32506 False negative "Remove redundant qualifier name" with java.util.ArrayList<Int>()
• KT-32454 "Replace Java static method with Kotlin analog": invalid quick fix on 'abs()' function

IDE. KDoc

• KT-30985 Missing line break in quick doc for enum constant

IDE. Navigation

• KT-10215 Kotlin classes are listed after Java classes in the navigation bar

IDE. Refactorings

• KT-29720 Refactor / Move does not update package statement with implicit prefix
• KT-30762 Inline method produces invalid code for suspend functions with receiver

IDE. Scratch

• KT-23604 Scratch: end of line is wrongly indented with the end of scratch line output
• KT-27963 Make REPL mode in Scratch files incremental
• KT-29534 Line output jumps to the next line together with cursor

IDE. Script

• KT-25187 Kotlin script in src: warning: classpath entry points to a non-existent location on JDK 9+
• KT-31152 Errors in IDE when different Java Sdk are set as Project SDK and as Gradle JVM
• KT-31521 CNFE „org.jetbrains.kotlin.idea.caches.project.ScriptBinariesScopeCache“ on creating new Gradle based project
• KT-31826 Gradle clean task causes IDEA to lose kotlin scripting configuration
• KT-31837 TargetPlatform for scripts should depends on scriptDefinition.additionalArguments

IDE. Tests Support

• KT-30814 MPP, 191 platform: with Gradle test runner run configuration for platform test is created without tasks

JS. Tools

• KT-31527 Keep generating empty jsTest task
• KT-31565 Gradle/JS: npmResolve is never UP-TO-DATE
• KT-32326 Gradle, test runner: support postponing test running error reporting at the end of the build
• KT-32393 Gradle, JS: Resolve projects lazily

Libraries

• KT-29372 measureTime that returns both the result of block and elapsed time
• KT-32083 Incorrect ReplaceWith annotation on kotlin.js.pow

Reflection

• KT-22923 Reflection getMemberProperties fails: kotlin.reflect.jvm.internal.KotlinReflectionInternalError
• KT-31318 "KotlinReflectionInternalError: Method is not supported" on accessing array class annotation parameter

Tools. Daemon

• KT-31550 NSME org.jetbrains.kotlin.com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem.clearHandlersCache()V on compileKotlin task with plugin from master

Tools. Gradle

New Features

• KT-26655 Precise metadata publishing and consumption for new MPP
• KT-31018 Gradle, JS: yarn
• KT-31703 Gradle, JS: automatically download d.ts and generate kotlin/js external declarations using dukat
• KT-31890 Gradle, JS, webpack: provide property with full bundle file path
• KT-32015 Gradle, JS: resolve configuration only while executing tasks of specific projects
• KT-32136 Gradle, test runner: handle case when test runtime exits abnormally

Performance Improvements

• KT-29538 AndroidSubPlugin#getCommonResDirectories is very slow

Fixes

• KT-29343 Kotlin MPP source set dependencies are not properly propagated to tests in Android projects
• KT-30691 Gradle, JS tests: Parent operation with id 947 not available when all tests passed
• KT-31917 Gradle, JS: transitive dependency between compilations in same project doesn't work
• KT-31985 Gradle, JS: webpack not working on windows
• KT-32072 Gradle, JS: browser() in DSL triggers project.evaluate()
• KT-32204 In an MPP, a dependency that is added to a non-root source set is incorrectly analyzed for source sets visibility
• KT-32225 In an MPP, if a dependency is added to a source set that does not take part in published compilations, it is not correctly analyzed in source set visibility inference
• KT-32564 Provide a flag to enable/disable hierarchical multiplatform mechanism in Gradle

Tools. Incremental Compile

• KT-31310 Incremental build of Kotlin/JS project fails with KNPE at IncrementalJsCache.nonDirtyPackageParts()

Tools. J2K

New Features

• KT-30776 New J2K
• KT-31836 Suggest user to configure Kotlin in the project when running new J2K file conversion
• KT-32512 ReplaceJavaStaticMethodWithKotlinAnalogInspection: add more cases for java.util.Arrays

Fixes

• KT-15791 J2K converts class literals including redundant generic <*>
• KT-31234 New J2K: Exception occurs on converting Java class to Kotlin
• KT-31250 J2K: caret position of original file is preserved, adding spaces to resulting file
• KT-31251 J2K: Java class with members is converted to Kotlin class with final constructor
• KT-31252 J2K: resulted file is not formatted
• KT-31254 J2K: resulted source uses full qualified references instead of imports
• KT-31255 J2K: redundant modifiers in resulted source
• KT-31726 New J2K converts annotation with array parameter to single value parameter
• KT-31809 "Attempt to modify PSI for non-committed Document!" exception and broken kotlin file after new J2K conversion
• KT-31821 J2K: IDEA Ultimate: local variable: CCE: "PsiLocalVariableImpl cannot be cast to class JvmAnnotatedElement" at JavaToJKTreeBuilder$DeclarationMapper.toJK()
• KT-32436 NewJ2K generic field is not initialized after convertion

Tools. JPS

• KT-27181 Compiler arguments are listed twice on JPS build of Gradle-based project

Tools. REPL

• KT-15125 Support JSR 223 bindings directly via script variables
• KT-32085 Kotlinc REPL: "java.lang.NoClassDefFoundError: org/jline/reader/LineReaderBuilder"

Tools. kapt

• KT-30578 build/generated/source/kaptKotlin is added as source directory to main instead of jvmMain when jvm { withJava() } is configured in a multiplatform project

1.3.41

Compiler

• KT-31981 New type inference asks to use ?. on non-null local variable
• KT-32029 Exception when callable reference is resolved against unresolved type
• KT-32037 No coercion to Unit for last expression with lambda in code block
• KT-32038 Unsubstituted stub type cause type mismatch later for builder inference
• KT-32051 NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER on matching Nothing with generic type parameter
• KT-32081 New type inference fails involving Either and Nothing
• KT-32089 False positive IMPLICIT_NOTHING_AS_TYPE_PARAMETER with lambdas
• KT-32094 NI: member from star import has higher resolution priority than member imported by FQN
• KT-32116 Type inference for HashMap<,> fails but compiles
• KT-32123 Wrong unused import for extension method
• KT-32133 Regression in Kotlin 1.3.40 new inference engine
• KT-32134 java.lang.Throwable: Resolution error of this type shouldn't occur for resolve try as a call for incomplete try-construction
• KT-32143 1.3.40 new inference: backward incompatibility in method calls with multiple SAM arguments
• KT-32154 setOf(Map.Entry<*, *>::key) gives error on IDE
• KT-32157 Issue with new type inference in unbounded generics
• KT-32175 New Type Inference Algorithm, RxJava and IDE-Compiler Inconsistency
• KT-32184 NI: Argument for @NotNull parameter 'type' of org/jetbrains/kotlin/types/CommonSupertypes.depth must not be null
• KT-32187 Exception when using callable reference with an unresolved LHS
• KT-32218 Cannot call get on a Map<out Any,Any> with new type system
• KT-32230 New inference not working with RxJava combineLatest
• KT-32235 New type inference failure with in check

JavaScript

• KT-32215 Reified generic doesn't work with ByteArray on js

Tools. CLI

• KT-32272 kotlinc - no main manifest attribute, in hello.jar

Tools. REPL

• KT-32085 Kotlinc REPL: "java.lang.NoClassDefFoundError: org/jline/reader/LineReaderBuilder"

Tools. Scripts

• KT-32169 Kotlin 1.3.40 - Crash on running *.main.kts script: "NoSuchMethodError: kotlin.script.templates.standard.ScriptTemplateWithArgs."
• KT-32206 Custom script definitions not loaded in the cli compiler

Previous releases

This release also includes the fixes and improvements from the previous releases.

CHANGELOG

1.3.40

Android

Fixes

• KT-12402 Android DataBinding work correctly but the IDE show it as error
• KT-31432 Remove obsolete code introduced in KT-12402

Compiler

New Features

• KT-29915 Implement typeOf on JVM
• KT-30467 Provide a way to to save compiled script(s) as a jar

Performance Improvements

• KT-17755 Optimize trimIndent and trimMargin on constant strings
• KT-30603 Compiler performance issue: VariableLivenessKt.useVar performance

Fixes

• KT-19227 Load built-ins from dependencies by default in the compiler, support erroneous "fallback" built-ins
• KT-23426 Actual typealias to Java enum does not match expected enum because of modality
• KT-23854 Inference for common type of two captured types
• KT-25105 False-positive warning "Remove final upper bound" on generic override
• KT-25302 New inference: "Type mismatch" between star projection and Any? type argument in specific case
• KT-25433 Wrong order of fixing type variables for callable references
• KT-26386 Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-26412 Wrong LVT generated if decomposed parameter of suspend lambda is not the first parameter.
• KT-27097 JvmMultifileClass + JvmName causes NoSuchMethodError on sealed class hierarchy for top-level members
• KT-28534 Local variable entries are missing in LVT for suspend lambda parameters
• KT-28535 Rename result to $result in coroutines' LVT
• KT-29184 Implement inference for coroutines according to the @BuilderInference contract in NI
• KT-29772 Contracts don't work if contract function is fully qualified (FQN)
• KT-29790 Incorrect version requirement in metadata of anonymous class for suspend lambda
• KT-29948 NI: incorrect DSLMarker behaviour with generic star projection
• KT-30021 +NewInference on Kotlin Native :: java.lang.StackOverflowError
• KT-30242 Statements are not coerced to Unit in last expressions of lambda
• KT-30243 Include FIR modules into compiler
• KT-30250 Rewrite at slice exception for callable reference argument inside delegated expression
• KT-30292 Reference to function is unresolved when LHS is a star-projected type
• KT-30293 Wrong intersection type for common supertype from String and integer type
• KT-30370 Call is completed too early when there is "Nothing" constraint
• KT-30405 Support expected type from cast in new inference
• KT-30406 Fix testIfOrWhenSpecialCall test for new inference
• KT-30590 Report diagnostic about not enough information for inference in NI
• KT-30620 Exception from the compiler when coroutine-inference is involved even with the explicitly specified types
• KT-30656 Exception is occurred when functions with implicit return-stub types are involved in builder-inference
• KT-30658 Exception from the compiler when getting callable reference to a suspend function
• KT-30661 Disable SAM conversions to Kotlin functions in new-inference by default
• KT-30676 Overload resolution ambiguity when there is a callable reference argument and candidates with different functional return types
• KT-30694 No debug metadata is generated for suspend lambdas which capture crossinline
• KT-30724 False positive error about missing equals when one of the operands is incorrectly inferred to Nothing
• KT-30734 No smartcast inside lambda literal in then/else "if" branch
• KT-30737 Try analysing callable reference preemptively
• KT-30780 Compiler crashes on 'private inline' function accessing private constant in 'inline class' (regression)
• KT-30808 NI: False negative SPREAD_OF_NULLABLE with USELESS_ELVIS_RIGHT_IS_NULL
• KT-30816 BasicJvmScriptEvaluator passes constructor parameters in incorrect order
• KT-30826 There isn't report about unsafe call in the new inference (by invalidating smartcast), NPE
• KT-30843 Duplicate JVM class name for expect/actual classes in JvmMultifileClass-annotated file
• KT-30853 Compiler crashes with NewInference and Kotlinx.Coroutines Flow
• KT-30927 Data flow info isn't used for 'this' which is returned from lambda using labeled return
• KT-31081 Implement ArgumentMatch abstraction in new inference
• KT-31113 Fix failing tests from SlicerTestGenerated
• KT-31199 Unresolved callable references with typealias
• KT-31339 Inliner does not remove redundant continuation classes, leading to CNFE in JMH bytecode processing
• KT-31346 Fix diagnostic DSL_SCOPE_VIOLATION for new inference
• KT-31356 False-positive error about violating dsl scope for new-inference
• KT-31360 NI: inconsistently prohibits member usage without explicit receiver specification with star projection and DSL marker
• KT-18563 Do not generate inline reified functions as private in bytecode
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-25290 New inference: KNPE at ResolutionPartsKt.getExpectedTypeWithSAMConversion() on out projection of Java class
• KT-26418 Back-end (JVM) Internal error when compiling decorated suspend inline functions
• KT-26925 Decorated suspend inline function continuation resumes in wrong spot
• KT-28999 Prohibit type parameters for anonymous objects
• KT-29307 New inference: false negative CONSTANT_EXPECTED_TYPE_MISMATCH with a Map
• KT-29475 IllegalArgumentException at getAbstractTypeFromDescriptor with deeply nested expression inside function named with a right parenthesis
• KT-29996 Properly report errors on attempt to inline bytecode from class files compiled to 1.8 to one compiling to 1.6
• KT-30289 Don't generate annotations on synthetic methods for methods with default values for parameters
• KT-30410 [NI] Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-30411 Fold recursive types to star-projected ones when inferring type variables
• KT-30706 Passing noinline lambda as (cross)inline parameter result in wrong state-machine
• KT-30707 Java interop of coroutines inside inline functions is broken
• KT-30983 ClassCastException: DeserializedTypeAliasDescriptor cannot be cast to PackageViewDescriptor on star-import of expect enum class actualized with typealias
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31347 "IndexOutOfBoundsException: Insufficient maximum stack size" with crossinline and suspend
• KT-31354 Suspend inline functions with crossinline parameters are inaccessible from java
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []
• KT-31461 NI: NONE_APPLICABLE instead of TYPE_MISMATCH when invoking convention plus operator
• KT-31503 Type mismatch with recursive types and SAM conversions
• KT-31507 Enable new type inference algorithm for IDE analysis
• KT-31514 New inference generates multiple errors on generic inline expression with elvis operator
• KT-31520 False positive "not enough information" for constraint with star projection and covariant type
• KT-31606 Rewrite at slice on using callable reference with array access operator
• KT-31620 False-positive "not enough information" for coroutine-inference when target method is assigned to a variable
• KT-31624 Type from declared upper bound in Java is considered more specific than Nothing producing type mismatch later
• KT-31860 Explicit type argument isn't considered as input type causing errors about "only input types"
• KT-31866 Problems with using star-projections on LHS of callable reference
• KT-31868 No type mismatch error when using NoInfer annotation

IDE

New Features

• KT-11242 Action to copy project diagnostic information to clipboard
• KT-24292 Support external nullability annotations
• KT-30453 Add plugin option (registry?) to enable new inference only in IDE

Performance Improvements

• KT-13841 Classes and functions should be lazy-parseable
• KT-27106 Performance issue with optimize imports
• KT-30442 Several second lag on project open in KotlinNonJvmSourceRootConverterProvider
• KT-30644 ConfigureKotlinInProjectUtilsKt freezes UI

Fixes

• KT-7380 Imports insertion on paste does not work correctly when there were alias imports in the source file
• KT-10512 Do not delete imports with unresolved parts when optimizing
• KT-13048 "Strip trailing spaces on Save" should not strip trailing spaces inside multiline strings in Kotlin
• KT-17375 Optimize Imports does not remove unused import alias
• KT-27385 Uast: property references should resolve to getters/setters
• KT-28627 Invalid detection of Kotlin jvmTarget inside Idea/gradle build
• KT-29267 Enable ultra-light classes by default
• KT-29892 A lot of threads are waiting in KotlinConfigurationCheckerComponent
• KT-30356 Kotlin facet: all JVM 9+ target platforms are shown as "Target Platform = JVM 9" in Project Structure dialog
• KT-30514 Auto-import with "Add unambiguous imports on the fly" imports enum members from another package
• KT-30583 Kotlin light elements should be isEquivalentTo to it's origins
• KT-30688 Memory leak in the PerModulePackageCacheService.onTooComplexChange method
• KT-30949 Optimize Imports removes used import alias
• KT-30957 Kotlin UAST: USimpleNameReferenceExpression in "imports" for class' member resolves incorrectly to class, not to the member
• KT-31090 java.lang.NoSuchMethodError: org.jetbrains.kotlin.idea.UtilsKt.addModuleDependencyIfNeeded on import of a multiplatform project with Android target (191 IDEA + master)
• KT-31092 Don't check all selected files in CheckComponentsUsageSearchAction.update()
• KT-31319 False positive "Unused import" for provideDelegate extension
• KT-31332 Kotlin AnnotatedElementsSearch does't support Kotlin object
• KT-31129 Call only Kotlin-specific reference contributors for getting Kotlin references from PSI
• KT-31693 Project with no Kotlin: JPS rebuild fails with NCDFE for GradleSettingsService at KotlinMPPGradleProjectTaskRunner.canRun()
• KT-31466 SOE in Java highlighting when a Kotlin ultra-light method is invoked
• KT-31723 Exception from UAST for attempt to infer types inside unresolved call
• KT-31842 UOE: no descriptor for type constructor of TypeVariable(T)

IDE. Completion

• KT-29038 Autocomplete "suspend" into "suspend fun" at top level and class level (except in kts top level)
• KT-29398 Add "arg" postfix template
• KT-30511 Replace extra space after autocompleting data class with file name by parentheses

IDE. Debugger

• KT-10636 Debugger: can't evaluate call of function type parameter inside inline function
• KT-18247 Debugger: class level watches fail to evaluate outside of class instance context
• KT-18263 Settings / Debugger / Java Type Renderers: unqualified Kotlin class members in Java expressions are shown as errors
• KT-23586 Non-trivial properties autocompletion in evaluation window
• KT-30216 Evaluate expression: declarations annotated with Experimental (LEVEL.ERROR) fail due to compilation error
• KT-30610 Debugger: Variables view shows second this instance for inline function even from the same class as caller function
• KT-30714 Breakpoints are shown as invalid for classes that are not loaded yet
• KT-30934 "InvocationException: Exception occurred in target VM" on debugger breakpoint hit (with kotlintest)
• KT-31266 Kotlin debugger incompatibility with latest 192 nightly: KotlinClassWithDelegatedPropertyRenderer
• KT-31785 Exception on attempt to evaluate local function

IDE. Gradle

• KT-29854 File collection dependency does not work with NMPP+JPS
• KT-30531 Gradle: NodeJS downloading
• KT-30767 Kotlin import uses too much memory when working with big projects
• KT-29564 kotlin.parallel.tasks.in.project=true causes idea to create kotlin modules with target JVM 1.6
• KT-31014 Gradle, JS: Webpack watch mode
• KT-31843 Memory leak caused by KOTLIN_TARGET_DATA_NODE on project reimport

IDE. Gradle. Script

• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-31124 “compileKotlin - configuration not found: kotlinScriptDef, the plugin is probably applied by a mistake” after creating new project with IJ and Kotlin from master
• KT-30974 Script dependencies resolution failed error while trying to use Kotlin for Gradle

IDE. Hints

• KT-30057 "View->Type info" shows "Type is unknown" for named argument syntax

IDE. Inspections and Intentions

New Features

• KT-11629 Inspection: creating Throwable without throwing it
• KT-12392 Unused import with alias should be highlighted and removed with Optimize Imports
• KT-12721 inspection should be made for converting Integer.toString(int) to int.toString()
• KT-13962 Intention to replace Java collection constructor calls with function calls from stdlib (ArrayList() → arrayListOf())
• KT-15537 Add inspection + intention to replace IntRange.start/endInclusive with first/last
• KT-21195 ReplaceWith intention could save generic type arguments
• KT-25262 Intention: Rename class to containing file name
• KT-25439 Inspection "Map replaceable with EnumMap"
• KT-26269 Inspection to replace associate with associateWith or associateBy
• KT-26629 Inspection to replace == operator on Double.NaN with equals call
• KT-27411 Inspection and Quickfix to replace System.exit() with exitProcess()
• KT-29344 Convert property initializer to getter: suggest on property name
• KT-29666 Quickfix for "DEPRECATED_JAVA_ANNOTATION": migrate arguments
• KT-29798 Add 'Covariant equals' inspection
• KT-29799 Inspection: class with non-null self-reference as a parameter in its primary constructor
• KT-30078 Add "Add getter/setter" quick fix for uninitialized property
• KT-30381 Inspection + quickfix to replace non-null assertion with return
• KT-30389 Fix to convert argument to Int: suggest roundToInt()
• KT-30501 Add inspection to replace filter { it is Foo } with filterIsInstance and filter { it != null } with filterNotNull
• KT-30612 Unused symbol inspection should detect enum entry
• KT-30663 Fully qualified name is added on quick fix for original class name if import alias exists
• KT-30725 Inspection which replaces .sorted().first() with .min()

Fixes

• KT-5412 "Replace non-null assertion with if expression" should replace parent expression
• KT-13549 "Package directive doesn't match file location" for root package
• KT-14040 Secondary enum class constructor is marked as "unused" by IDE
• KT-18459 Spring: "Autowiring for Bean Class (Kotlin)" inspection adds not working @Named annotation to property
• KT-21526 used class is marked as "never used"
• KT-22896 "Change function signature" quickfix on "x overrides nothing" doesn't rename type arguments
• KT-27089 ReplaceWith quickfix doesn't take into account generic parameter
• KT-27821 SimplifiableCallChain inspection quick fix removes comments for intermediate operations
• KT-28485 Incorrect parameter name after running "Add parameter to function" intention when argument variable is upper case const
• KT-28619 "Add braces to 'if' statement" moves end-of-line comment inside an if branch if statement inside if is block
• KT-29556 "Remove redundant 'let' call" doesn't rename parameter with convention invoke call
• KT-29677 "Specify type explicitly" intention produces invalid output for type escaped with backticks
• KT-29764 "Convert property to function" intention doesn't warn about the property overloads at child class constructor
• KT-29812 False positive for HasPlatformType with member extension on 'dynamic'
• KT-29869 'WhenWithOnlyElse': possibly useless inspection with false grey warning highlighting during editing the code
• KT-30038 'Remove redundant Unit" false positive when return type is nullable Unit
• KT-30082 False positive "redundant .let call" for lambda functions stored in nullable references
• KT-30173 "Nested lambda has shadowed implicit parameter" is suggested when both parameters are logically the same
• KT-30208 Convert to anonymous object: lambda generic type argument is lost
• KT-30215 No "surround with null" check is suggested for an assignment
• KT-30228 'Convert to also/apply/run/with' intention behaves differently depending on the position of infix function call
• KT-30457 MoveVariableDeclarationIntoWhen: do not report gray warning on variable declarations taking multiple lines / containing preemptive returns
• KT-30481 Do not report ImplicitNullableNothingType on a function/property that overrides a function/property of type 'Nothing?'
• KT-30527 False positive "Type alias is never used" with import of enum member
• KT-30559 Redundant Getter, Redundant Setter: reduce range to getter/setter header
• KT-30565 False positive "Suspicious 'var' property" inspection with annotated default property getter
• KT-30579 Kotlin-gradle groovy inspections should depend on Groovy plugin
• KT-30613 "Convert to anonymous function" should not insert named argument when interoping with Java functions
• KT-30614 String templates suggest removing curly braces for backtick escaped identifiers
• KT-30622 Add names to call arguments starting from given argument
• KT-30637 False positive "unused constructor" for local class
• KT-30669 Import quick fix does not work for property/function with original name if import alias for them exist
• KT-30761 Replace assert boolean with assert equality produces uncompilable code when compared arguments type are different
• KT-30769 Override quickfix creates "sealed fun"
• KT-30833 Exception after "Introduce Import Alias" if invoke in import
• KT-30876 SimplifyNotNullAssert inspection changes semantics
• KT-30900 Invert 'if' condition respects neither code formatting nor inline comments
• KT-30910 "Use property access syntax" is not suitable as text for inspection problem text
• KT-30916 Quickfix "Remove redundant qualifier name" can't work with user type with generic parameter
• KT-31103 Don't invoke Gradle related inspections when Gradle plugin is disabled
• KT-31349 Add name to argument should not be suggested for Java library classes
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument
• KT-25465 "Redundant 'suspend' modifier" with suspend operator invoke
• KT-26337 Exception (resource not found) in quick-fix tests in AS32
• KT-30879 False positive "Redundant qualifier name"
• KT-31415 UI hangs due to long computations for "Use property access syntax" intention with new inference
• KT-31441 False positive "Remove explicit type arguments" inspection for projection type
• KT-30970 No warning for empty if operator and alsomethod
• KT-31855 IDE + new inference: Java SAM conversion is not suggested by IDE services

IDE. JS

• KT-31895 New Project wizard: Kotlin Gradle + Kotlin/JS for Node.js: incorrect DSL is inserted

IDE. Libraries

• KT-30790 Unstable IDE navigation behavior to expect/actual symbols in stdlib
• KT-30821 K/N: Navigation downwards the hierarchy in stdlib source code opens to stubs

IDE. Misc

• KT-31364 IntelliJ routinely hangs and spikes CPU / Memory usage when editing kotlin files

IDE. Navigation

• KT-18322 Find Usages not finding Java usage of @JvmField declared in primary constructor
• KT-27332 Gutter icons are still shown even if disabled

IDE. Refactorings

• KT-30471 Make KotlinElementActionsFactory.createChangeParametersActions able to just add parameters

IDE. Run Configurations

• KT-29352 Kotlin + Java 11 + Windows : impossible to run applications with long command lines, even with dynamic.classpath=true

IDE. Scratch

• KT-29642 Once hidden, Scratch Output window wouldn't show the results unless the project is reopened

IDE. Script

• KT-30295 Resolver for 'completion/highlighting in ScriptDependenciesSourceInfo...' does not know how to resolve [] or [Library(null)]
• KT-30690 Highlighting for scripts in diff view doesn't work for left part
• KT-31452 IDE editor: MISSING_SCRIPT_STANDARD_TEMPLATE is reported inconsistently with the single line in script

IDE. Tests Support

• KT-30995 Gradle test runner: "No tasks available" for a test class in non-MPP project

IDE. Ultimate

• KT-30886 KotlinIdeaResolutionException in Velocity template (.ft) with Kotlin code

IDE. Wizards

• KT-30645 Update New Project Wizard templates related to Kotlin/JS
• KT-31099 Remove Gradle configuration boilerplate for JS from multiplatform New Project Wizard templates related to Kotlin/JS
• KT-31695 Gradle, JS: update wizard templates

JS. Tools

• KT-31563 Gradle/JS: npmResolve fails with "Invalid version" when user project's version does not match npm rules
• KT-31566 Gradle/JS: with explicit call to nodejs { testTask { useNodeJs() } } configuration fails : "Could not find which method to invoke"
• KT-31560 Gradle: provide descriptions for JS tasks
• KT-31564 Gradle/JS: npmResolve reports warning "karma-webpack@3.0.5 has unmet peer dependency"
• KT-31662 Gradle/JS: with empty useKarma {} lambda the execution of jsBrowserTest never stops
• KT-31686 Gradle/JS: useKarma { useConfigDirectory() } fails to configure
• KT-31694 Gradle, NPM, windows: creating symlink requires administrator privilege

JavaScript

• KT-31007 Kotlin/JS 1.3.30 - private method in an interface in the external library causes ReferenceError

Libraries

• KT-30174 Annotation for experimental stdlib API
• KT-30451 Redundant call of selector in maxBy&minBy
• KT-30560 Fix Throwable::addSuppressed from stdlib to make it work without stdlib-jdk7 in runtime
• KT-24810 Support common string<->ByteArray UTF-8 conversion
• KT-29265 String.toCharArray() is not available in common stdlib
• KT-31194 assertFails and assertFailsWith don't work with suspend functions
• KT-31639 'Iterbale.drop' drops too much because of overflow
• KT-28933 capitalize() with Locale argument in the JDK stdlib

Reflection

• KT-29041 KAnnotatedElement should have an extension function to verify if certain annotation is present
• KT-30344 Avoid using .kotlin_module in kotlin-reflect

Tools. Android Extensions

• KT-30993 Android Extensions: Make @Parcelize functionality non-experimental

Tools. CLI

• KT-27638 Add -Xjava-sources compiler argument to specify directories with .java source files which can be referenced from the compiled Kotlin sources
• KT-27778 Add -Xpackage-prefix compiler argument to specify package prefix for Java sources resolution
• KT-30973 Compilation on IBM J9 (build 2.9, JRE 1.8.0 AIX ppc64-64-Bit) fails unless -Xuse-javac is specified

Tools. Compiler Plugins

• KT-30343 Add new Quarkus preset to all-open compiler plugin

Tools. Gradle

New Features

• KT-20156 Publish the Kotlin Javascript Gradle plugin to the Gradle Plugins Portal
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-27273 Support the Gradle 'application' plugin in new MPP or provide an alternative
• KT-30528 Gradle, JS tests: support basic builtin test runner
• KT-31015 Gradle, JS: Change default for new kotlin-js and experimental kotlin-multiplatform plugins
• KT-30573 Gradle, JS: enable source maps by default, change paths relative to node_modules directory
• KT-30747 Gradle, JS tests: provide option to disable test configuration per target
• KT-31010 Gradle, JS tests: Mocha
• KT-31011 Gradle, JS tests: Karma
• KT-31013 Gradle, JS: Webpack
• KT-31016 Gradle: yarn downloading
• KT-31017 Gradle, yarn: support workspaces

Fixes

• KT-13256 CompileJava tasks in Kotlin2Js Gradle plugin
• KT-16355 Rename "compileKotlin2Js" Gradle task to "compileKotlinJs"
• KT-26255 Using the jvmWithJava preset in new MPP leads to counter-intuitive source set names and directory structure
• KT-27640 Do not use -Xbuild-file when invoking the Kotlin compiler in Gradle plugins
• KT-29284 kotlin2js plugin applies java plugin
• KT-30132 Could not initialize class org.jetbrains.kotlin.com.intellij.openapi.util.io.FileUtil on build by gradle
• KT-30596 Kotlin Gradle Plugin: Forward stdout and stderr logger of out of process though gradle logger
• KT-31106 Kotlin compilation fails with locked build script dependencies and Gradle 5
• KT-28985 Java tests not executed in a module created with presets.jvmWithJava
• KT-30340 kotlin("multiplatform") plugin is not working properly with Spring Boot
• KT-30784 Deprecation warning "API 'variant.getPackageLibrary()' is obsolete and has been replaced with 'variant.getPackageLibraryProvider()'" for a multiplatform library with Android target
• KT-31027 java.lang.NoSuchMethodError: No static method hashCode(Z)I in class Ljava/lang/Boolean; or its super classes (declaration of 'java.lang.Boolean' appears in /system/framework/core-libart.jar)
• KT-31696 Gradle, NPM: select one version between tools and all of compile configurations
• KT-31697 Gradle, NPM: report about clashes in packages_imported
• KT-31891 Gradle: JS or Native tests execution: build --scan fails with ISE "Expected attachment of type ... but did not find it"

Tools. Incremental Compile

• KT-31131 Regression: incremental compilation of multi-file part throws exception

Tools. J2K

• KT-23023 J2K: Inspection to convert Arrays.copyOf(a, size) to a.copyOf(size)
• KT-26550 J2K: Check context/applicability of conversion, don't suggest for libraries, jars, etc.
• KT-29568 Disabled "Convert Java File to Kotlin File" action is shown in project view context menu for XML files

Tools. JPS

• KT-13563 Kotlin jps-plugin should allow to instrument bytecode from Intellij IDEA.

Tools. REPL

• KT-21443 Kotlin's JSR223 script engine does not work when used by a fat jar

Tools. Scripts

• KT-30986 Missing dependencies when JSR-223 script engines are used from kotlin-script-util

Tools. kapt

• KT-26203 kapt.use.worker.api=true throws a NullPointerException on Java 10/11
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31064 Periodically build crash when using incremental kapt
• KT-23880 Kapt: Support incremental annotation processors
• KT-31322 Kapt does not run annotation processing when sources change.
• KT-30979 Issue with Dagger2 providers MissingBinding with 1.3.30
• KT-31127 Kotlin-generating processor which uses Filer API breaks JavaCompile task
• KT-31714 incremental kapt: FileSystemException: Too many open files

CHANGELOG

1.3.40

Android

Fixes

• KT-12402 Android DataBinding work correctly but the IDE show it as error
• KT-31432 Remove obsolete code introduced in KT-12402

Compiler

New Features

• KT-29915 Implement typeOf on JVM
• KT-30467 Provide a way to to save compiled script(s) as a jar

Performance Improvements

• KT-17755 Optimize trimIndent and trimMargin on constant strings
• KT-30603 Compiler performance issue: VariableLivenessKt.useVar performance

Fixes

• KT-19227 Load built-ins from dependencies by default in the compiler, support erroneous "fallback" built-ins
• KT-23426 Actual typealias to Java enum does not match expected enum because of modality
• KT-23854 Inference for common type of two captured types
• KT-25105 False-positive warning "Remove final upper bound" on generic override
• KT-25302 New inference: "Type mismatch" between star projection and Any? type argument in specific case
• KT-25433 Wrong order of fixing type variables for callable references
• KT-26386 Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-26412 Wrong LVT generated if decomposed parameter of suspend lambda is not the first parameter.
• KT-27097 JvmMultifileClass + JvmName causes NoSuchMethodError on sealed class hierarchy for top-level members
• KT-28534 Local variable entries are missing in LVT for suspend lambda parameters
• KT-28535 Rename result to $result in coroutines' LVT
• KT-29184 Implement inference for coroutines according to the @BuilderInference contract in NI
• KT-29772 Contracts don't work if contract function is fully qualified (FQN)
• KT-29790 Incorrect version requirement in metadata of anonymous class for suspend lambda
• KT-29948 NI: incorrect DSLMarker behaviour with generic star projection
• KT-30021 +NewInference on Kotlin Native :: java.lang.StackOverflowError
• KT-30242 Statements are not coerced to Unit in last expressions of lambda
• KT-30243 Include FIR modules into compiler
• KT-30250 Rewrite at slice exception for callable reference argument inside delegated expression
• KT-30292 Reference to function is unresolved when LHS is a star-projected type
• KT-30293 Wrong intersection type for common supertype from String and integer type
• KT-30370 Call is completed too early when there is "Nothing" constraint
• KT-30405 Support expected type from cast in new inference
• KT-30406 Fix testIfOrWhenSpecialCall test for new inference
• KT-30590 Report diagnostic about not enough information for inference in NI
• KT-30620 Exception from the compiler when coroutine-inference is involved even with the explicitly specified types
• KT-30656 Exception is occurred when functions with implicit return-stub types are involved in builder-inference
• KT-30658 Exception from the compiler when getting callable reference to a suspend function
• KT-30661 Disable SAM conversions to Kotlin functions in new-inference by default
• KT-30676 Overload resolution ambiguity when there is a callable reference argument and candidates with different functional return types
• KT-30694 No debug metadata is generated for suspend lambdas which capture crossinline
• KT-30724 False positive error about missing equals when one of the operands is incorrectly inferred to Nothing
• KT-30734 No smartcast inside lambda literal in then/else "if" branch
• KT-30737 Try analysing callable reference preemptively
• KT-30780 Compiler crashes on 'private inline' function accessing private constant in 'inline class' (regression)
• KT-30808 NI: False negative SPREAD_OF_NULLABLE with USELESS_ELVIS_RIGHT_IS_NULL
• KT-30816 BasicJvmScriptEvaluator passes constructor parameters in incorrect order
• KT-30826 There isn't report about unsafe call in the new inference (by invalidating smartcast), NPE
• KT-30843 Duplicate JVM class name for expect/actual classes in JvmMultifileClass-annotated file
• KT-30853 Compiler crashes with NewInference and Kotlinx.Coroutines Flow
• KT-30927 Data flow info isn't used for 'this' which is returned from lambda using labeled return
• KT-31081 Implement ArgumentMatch abstraction in new inference
• KT-31113 Fix failing tests from SlicerTestGenerated
• KT-31199 Unresolved callable references with typealias
• KT-31339 Inliner does not remove redundant continuation classes, leading to CNFE in JMH bytecode processing
• KT-31346 Fix diagnostic DSL_SCOPE_VIOLATION for new inference
• KT-31356 False-positive error about violating dsl scope for new-inference
• KT-31360 NI: inconsistently prohibits member usage without explicit receiver specification with star projection and DSL marker
• KT-18563 Do not generate inline reified functions as private in bytecode
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-25290 New inference: KNPE at ResolutionPartsKt.getExpectedTypeWithSAMConversion() on out projection of Java class
• KT-26418 Back-end (JVM) Internal error when compiling decorated suspend inline functions
• KT-26925 Decorated suspend inline function continuation resumes in wrong spot
• KT-28999 Prohibit type parameters for anonymous objects
• KT-29307 New inference: false negative CONSTANT_EXPECTED_TYPE_MISMATCH with a Map
• KT-29475 IllegalArgumentException at getAbstractTypeFromDescriptor with deeply nested expression inside function named with a right parenthesis
• KT-29996 Properly report errors on attempt to inline bytecode from class files compiled to 1.8 to one compiling to 1.6
• KT-30289 Don't generate annotations on synthetic methods for methods with default values for parameters
• KT-30410 [NI] Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-30411 Fold recursive types to star-projected ones when inferring type variables
• KT-30706 Passing noinline lambda as (cross)inline parameter result in wrong state-machine
• KT-30707 Java interop of coroutines inside inline functions is broken
• KT-30983 ClassCastException: DeserializedTypeAliasDescriptor cannot be cast to PackageViewDescriptor on star-import of expect enum class actualized with typealias
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31347 "IndexOutOfBoundsException: Insufficient maximum stack size" with crossinline and suspend
• KT-31354 Suspend inline functions with crossinline parameters are inaccessible from java
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []
• KT-31461 NI: NONE_APPLICABLE instead of TYPE_MISMATCH when invoking convention plus operator
• KT-31503 Type mismatch with recursive types and SAM conversions
• KT-31507 Enable new type inference algorithm for IDE analysis
• KT-31514 New inference generates multiple errors on generic inline expression with elvis operator
• KT-31520 False positive "not enough information" for constraint with star projection and covariant type
• KT-31606 Rewrite at slice on using callable reference with array access operator
• KT-31620 False-positive "not enough information" for coroutine-inference when target method is assigned to a variable
• KT-31624 Type from declared upper bound in Java is considered more specific than Nothing producing type mismatch later

IDE

New Features

• KT-11242 Action to copy project diagnostic information to clipboard
• KT-24292 Support external nullability annotations
• KT-30453 Add plugin option (registry?) to enable new inference only in IDE

Performance Improvements

• KT-13841 Classes and functions should be lazy-parseable
• KT-27106 Performance issue with optimize imports
• KT-30442 Several second lag on project open in KotlinNonJvmSourceRootConverterProvider
• KT-30644 ConfigureKotlinInProjectUtilsKt freezes UI

Fixes

• KT-7380 Imports insertion on paste does not work correctly when there were alias imports in the source file
• KT-10512 Do not delete imports with unresolved parts when optimizing
• KT-13048 "Strip trailing spaces on Save" should not strip trailing spaces inside multiline strings in Kotlin
• KT-17375 Optimize Imports does not remove unused import alias
• KT-27385 Uast: property references should resolve to getters/setters
• KT-28627 Invalid detection of Kotlin jvmTarget inside Idea/gradle build
• KT-29267 Enable ultra-light classes by default
• KT-29892 A lot of threads are waiting in KotlinConfigurationCheckerComponent
• KT-30356 Kotlin facet: all JVM 9+ target platforms are shown as "Target Platform = JVM 9" in Project Structure dialog
• KT-30514 Auto-import with "Add unambiguous imports on the fly" imports enum members from another package
• KT-30583 Kotlin light elements should be isEquivalentTo to it's origins
• KT-30688 Memory leak in the PerModulePackageCacheService.onTooComplexChange method
• KT-30949 Optimize Imports removes used import alias
• KT-30957 Kotlin UAST: USimpleNameReferenceExpression in "imports" for class' member resolves incorrectly to class, not to the member
• KT-31090 java.lang.NoSuchMethodError: org.jetbrains.kotlin.idea.UtilsKt.addModuleDependencyIfNeeded on import of a multiplatform project with Android target (191 IDEA + master)
• KT-31092 Don't check all selected files in CheckComponentsUsageSearchAction.update()
• KT-31319 False positive "Unused import" for provideDelegate extension
• KT-31332 Kotlin AnnotatedElementsSearch does't support Kotlin object
• KT-31129 Call only Kotlin-specific reference contributors for getting Kotlin references from PSI
• KT-31693 Project with no Kotlin: JPS rebuild fails with NCDFE for GradleSettingsService at KotlinMPPGradleProjectTaskRunner.canRun()

IDE. Completion

• KT-29038 Autocomplete "suspend" into "suspend fun" at top level and class level (except in kts top level)
• KT-29398 Add "arg" postfix template
• KT-30511 Replace extra space after autocompleting data class with file name by parentheses

IDE. Debugger

• KT-10636 Debugger: can't evaluate call of function type parameter inside inline function
• KT-18247 Debugger: class level watches fail to evaluate outside of class instance context
• KT-18263 Settings / Debugger / Java Type Renderers: unqualified Kotlin class members in Java expressions are shown as errors
• KT-23586 Non-trivial properties autocompletion in evaluation window
• KT-30216 Evaluate expression: declarations annotated with Experimental (LEVEL.ERROR) fail due to compilation error
• KT-30610 Debugger: Variables view shows second this instance for inline function even from the same class as caller function
• KT-30714 Breakpoints are shown as invalid for classes that are not loaded yet
• KT-30934 "InvocationException: Exception occurred in target VM" on debugger breakpoint hit (with kotlintest)
• KT-31266 Kotlin debugger incompatibility with latest 192 nightly: KotlinClassWithDelegatedPropertyRenderer

IDE. Gradle

• KT-29854 File collection dependency does not work with NMPP+JPS
• KT-30531 Gradle: NodeJS downloading
• KT-30767 Kotlin import uses too much memory when working with big projects
• KT-29564 kotlin.parallel.tasks.in.project=true causes idea to create kotlin modules with target JVM 1.6
• KT-31014 Gradle, JS: Webpack watch mode

IDE. Gradle. Script

• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-31124 “compileKotlin - configuration not found: kotlinScriptDef, the plugin is probably applied by a mistake” after creating new project with IJ and Kotlin from master
• KT-30974 Script dependencies resolution failed error while trying to use Kotlin for Gradle

IDE. Hints

• KT-30057 "View->Type info" shows "Type is unknown" for named argument syntax

IDE. Inspections and Intentions

New Features

• KT-11629 Inspection: creating Throwable without throwing it
• KT-12392 Unused import with alias should be highlighted and removed with Optimize Imports
• KT-12721 inspection should be made for converting Integer.toString(int) to int.toString()
• KT-13962 Intention to replace Java collection constructor calls with function calls from stdlib (ArrayList() → arrayListOf())
• KT-15537 Add inspection + intention to replace IntRange.start/endInclusive with first/last
• KT-21195 ReplaceWith intention could save generic type arguments
• KT-25262 Intention: Rename class to containing file name
• KT-25439 Inspection "Map replaceable with EnumMap"
• KT-26269 Inspection to replace associate with associateWith or associateBy
• KT-26629 Inspection to replace == operator on Double.NaN with equals call
• KT-27411 Inspection and Quickfix to replace System.exit() with exitProcess()
• KT-29344 Convert property initializer to getter: suggest on property name
• KT-29666 Quickfix for "DEPRECATED_JAVA_ANNOTATION": migrate arguments
• KT-29798 Add 'Covariant equals' inspection
• KT-29799 Inspection: class with non-null self-reference as a parameter in its primary constructor
• KT-30078 Add "Add getter/setter" quick fix for uninitialized property
• KT-30381 Inspection + quickfix to replace non-null assertion with return
• KT-30389 Fix to convert argument to Int: suggest roundToInt()
• KT-30501 Add inspection to replace filter { it is Foo } with filterIsInstance and filter { it != null } with filterNotNull
• KT-30612 Unused symbol inspection should detect enum entry
• KT-30663 Fully qualified name is added on quick fix for original class name if import alias exists
• KT-30725 Inspection which replaces .sorted().first() with .min()

Fixes

• KT-5412 "Replace non-null assertion with if expression" should replace parent expression
• KT-13549 "Package directive doesn't match file location" for root package
• KT-14040 Secondary enum class constructor is marked as "unused" by IDE
• KT-18459 Spring: "Autowiring for Bean Class (Kotlin)" inspection adds not working @Named annotation to property
• KT-21526 used class is marked as "never used"
• KT-22896 "Change function signature" quickfix on "x overrides nothing" doesn't rename type arguments
• KT-27089 ReplaceWith quickfix doesn't take into account generic parameter
• KT-27821 SimplifiableCallChain inspection quick fix removes comments for intermediate operations
• KT-28485 Incorrect parameter name after running "Add parameter to function" intention when argument variable is upper case const
• KT-28619 "Add braces to 'if' statement" moves end-of-line comment inside an if branch if statement inside if is block
• KT-29556 "Remove redundant 'let' call" doesn't rename parameter with convention invoke call
• KT-29677 "Specify type explicitly" intention produces invalid output for type escaped with backticks
• KT-29764 "Convert property to function" intention doesn't warn about the property overloads at child class constructor
• KT-29812 False positive for HasPlatformType with member extension on 'dynamic'
• KT-29869 'WhenWithOnlyElse': possibly useless inspection with false grey warning highlighting during editing the code
• KT-30038 'Remove redundant Unit" false positive when return type is nullable Unit
• KT-30082 False positive "redundant .let call" for lambda functions stored in nullable references
• KT-30173 "Nested lambda has shadowed implicit parameter" is suggested when both parameters are logically the same
• KT-30208 Convert to anonymous object: lambda generic type argument is lost
• KT-30215 No "surround with null" check is suggested for an assignment
• KT-30228 'Convert to also/apply/run/with' intention behaves differently depending on the position of infix function call
• KT-30457 MoveVariableDeclarationIntoWhen: do not report gray warning on variable declarations taking multiple lines / containing preemptive returns
• KT-30481 Do not report ImplicitNullableNothingType on a function/property that overrides a function/property of type 'Nothing?'
• KT-30527 False positive "Type alias is never used" with import of enum member
• KT-30559 Redundant Getter, Redundant Setter: reduce range to getter/setter header
• KT-30565 False positive "Suspicious 'var' property" inspection with annotated default property getter
• KT-30579 Kotlin-gradle groovy inspections should depend on Groovy plugin
• KT-30613 "Convert to anonymous function" should not insert named argument when interoping with Java functions
• KT-30614 String templates suggest removing curly braces for backtick escaped identifiers
• KT-30622 Add names to call arguments starting from given argument
• KT-30637 False positive "unused constructor" for local class
• KT-30669 Import quick fix does not work for property/function with original name if import alias for them exist
• KT-30761 Replace assert boolean with assert equality produces uncompilable code when compared arguments type are different
• KT-30769 Override quickfix creates "sealed fun"
• KT-30833 Exception after "Introduce Import Alias" if invoke in import
• KT-30876 SimplifyNotNullAssert inspection changes semantics
• KT-30900 Invert 'if' condition respects neither code formatting nor inline comments
• KT-30910 "Use property access syntax" is not suitable as text for inspection problem text
• KT-30916 Quickfix "Remove redundant qualifier name" can't work with user type with generic parameter
• KT-31103 Don't invoke Gradle related inspections when Gradle plugin is disabled
• KT-31349 Add name to argument should not be suggested for Java library classes
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument
• KT-25465 "Redundant 'suspend' modifier" with suspend operator invoke
• KT-26337 Exception (resource not found) in quick-fix tests in AS32
• KT-30879 False positive "Redundant qualifier name"
• KT-31415 UI hangs due to long computations for "Use property access syntax" intention with new inference
• KT-31441 False positive "Remove explicit type arguments" inspection for projection type

IDE. Libraries

• KT-30790 Unstable IDE navigation behavior to expect/actual symbols in stdlib
• KT-30821 K/N: Navigation downwards the hierarchy in stdlib source code opens to stubs

IDE. Navigation

• KT-18322 Find Usages not finding Java usage of @JvmField declared in primary constructor
• KT-27332 Gutter icons are still shown even if disabled

IDE. Refactorings

• KT-30471 Make KotlinElementActionsFactory.createChangeParametersActions able to just add parameters

IDE. Run Configurations

• KT-29352 Kotlin + Java 11 + Windows : impossible to run applications with long command lines, even with dynamic.classpath=true

IDE. Scratch

• KT-29642 Once hidden, Scratch Output window wouldn't show the results unless the project is reopened

IDE. Script

• KT-30295 Resolver for 'completion/highlighting in ScriptDependenciesSourceInfo...' does not know how to resolve [] or [Library(null)]
• KT-30690 Highlighting for scripts in diff view doesn't work for left part

IDE. Tests Support

• KT-30995 Gradle test runner: "No tasks available" for a test class in non-MPP project

IDE. Wizards

• KT-30645 Update New Project Wizard templates related to Kotlin/JS

JS. Tools

• KT-31563 Gradle/JS: npmResolve fails with "Invalid version" when user project's version does not match npm rules
• KT-31566 Gradle/JS: with explicit call to nodejs { testTask { useNodeJs() } } configuration fails : "Could not find which method to invoke"

JavaScript

• KT-31007 Kotlin/JS 1.3.30 - private method in an interface in the external library causes ReferenceError

Libraries

• KT-30174 Annotation for experimental stdlib API
• KT-30451 Redundant call of selector in maxBy&minBy
• KT-30560 Fix Throwable::addSuppressed from stdlib to make it work without stdlib-jdk7 in runtime
• KT-24810 Support common string<->ByteArray UTF-8 conversion
• KT-29265 String.toCharArray() is not available in common stdlib
• KT-31194 assertFails and assertFailsWith don't work with suspend functions
• KT-31639 'Iterbale.drop' drops too much because of overflow

Reflection

• KT-29041 KAnnotatedElement should have an extension function to verify if certain annotation is present
• KT-30344 Avoid using .kotlin_module in kotlin-reflect

Tools. Android Extensions

• KT-30993 Android Extensions: Make @Parcelize functionality non-experimental

Tools. CLI

• KT-27638 Add -Xjava-sources compiler argument to specify directories with .java source files which can be referenced from the compiled Kotlin sources
• KT-27778 Add -Xpackage-prefix compiler argument to specify package prefix for Java sources resolution
• KT-30973 Compilation on IBM J9 (build 2.9, JRE 1.8.0 AIX ppc64-64-Bit) fails unless -Xuse-javac is specified

Tools. Compiler Plugins

• KT-30343 Add new Quarkus preset to all-open compiler plugin

Tools. Gradle

New Features

• KT-20156 Publish the Kotlin Javascript Gradle plugin to the Gradle Plugins Portal
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-27273 Support the Gradle 'application' plugin in new MPP or provide an alternative
• KT-30528 Gradle, JS tests: support basic builtin test runner
• KT-31015 Gradle, JS: Change default for new kotlin-js and experimental kotlin-multiplatform plugins
• KT-30573 Gradle, JS: enable source maps by default, change paths relative to node_modules directory
• KT-30747 Gradle, JS tests: provide option to disable test configuration per target
• KT-31010 Gradle, JS tests: Mocha
• KT-31011 Gradle, JS tests: Karma
• KT-31013 Gradle, JS: Webpack
• KT-31016 Gradle: yarn downloading
• KT-31017 Gradle, yarn: support workspaces

Fixes

• KT-13256 CompileJava tasks in Kotlin2Js Gradle plugin
• KT-16355 Rename "compileKotlin2Js" Gradle task to "compileKotlinJs"
• KT-26255 Using the jvmWithJava preset in new MPP leads to counter-intuitive source set names and directory structure
• KT-27640 Do not use -Xbuild-file when invoking the Kotlin compiler in Gradle plugins
• KT-29284 kotlin2js plugin applies java plugin
• KT-30132 Could not initialize class org.jetbrains.kotlin.com.intellij.openapi.util.io.FileUtil on build by gradle
• KT-30596 Kotlin Gradle Plugin: Forward stdout and stderr logger of out of process though gradle logger
• KT-31106 Kotlin compilation fails with locked build script dependencies and Gradle 5
• KT-28985 Java tests not executed in a module created with presets.jvmWithJava
• KT-30340 kotlin("multiplatform") plugin is not working properly with Spring Boot
• KT-30784 Deprecation warning "API 'variant.getPackageLibrary()' is obsolete and has been replaced with 'variant.getPackageLibraryProvider()'" for a multiplatform library with Android target
• KT-31027 java.lang.NoSuchMethodError: No static method hashCode(Z)I in class Ljava/lang/Boolean; or its super classes (declaration of 'java.lang.Boolean' appears in /system/framework/core-libart.jar)

Tools. Incremental Compile

• KT-31131 Regression: incremental compilation of multi-file part throws exception

Tools. J2K

• KT-23023 J2K: Inspection to convert Arrays.copyOf(a, size) to a.copyOf(size)
• KT-26550 J2K: Check context/applicability of conversion, don't suggest for libraries, jars, etc.
• KT-29568 Disabled "Convert Java File to Kotlin File" action is shown in project view context menu for XML files

Tools. Scripts

• KT-30986 Missing dependencies when JSR-223 script engines are used from kotlin-script-util

Tools. kapt

• KT-26203 kapt.use.worker.api=true throws a NullPointerException on Java 10/11
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31064 Periodically build crash when using incremental kapt
• KT-23880 Kapt: Support incremental annotation processors
• KT-31322 Kapt does not run annotation processing when sources change.

CHANGELOG

1.3.40

Compiler

New Features

• KT-29915 Implement typeOf on JVM

Performance Improvements

• KT-17755 Optimize trimIndent and trimMargin on constant strings
• KT-30603 Compiler performance issue: VariableLivenessKt.useVar performance

Fixes

• KT-19227 Load built-ins from dependencies by default in the compiler, support erroneous "fallback" built-ins
• KT-23426 Actual typealias to Java enum does not match expected enum because of modality
• KT-23854 Inference for common type of two captured types
• KT-25105 False-positive warning "Remove final upper bound" on generic override
• KT-25302 New inference: "Type mismatch" between star projection and Any? type argument in specific case
• KT-25433 Wrong order of fixing type variables for callable references
• KT-26386 Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-26412 Wrong LVT generated if decomposed parameter of suspend lambda is not the first parameter.
• KT-27097 JvmMultifileClass + JvmName causes NoSuchMethodError on sealed class hierarchy for top-level members
• KT-28534 Local variable entries are missing in LVT for suspend lambda parameters
• KT-28535 Rename result to $result in coroutines' LVT
• KT-29184 Implement inference for coroutines according to the @BuilderInference contract in NI
• KT-29772 Contracts don't work if contract function is fully qualified (FQN)
• KT-29790 Incorrect version requirement in metadata of anonymous class for suspend lambda
• KT-29948 NI: incorrect DSLMarker behaviour with generic star projection
• KT-30021 +NewInference on Kotlin Native :: java.lang.StackOverflowError
• KT-30242 Statements are not coerced to Unit in last expressions of lambda
• KT-30243 Include FIR modules into compiler
• KT-30250 Rewrite at slice exception for callable reference argument inside delegated expression
• KT-30292 Reference to function is unresolved when LHS is a star-projected type
• KT-30293 Wrong intersection type for common supertype from String and integer type
• KT-30370 Call is completed too early when there is "Nothing" constraint
• KT-30405 Support expected type from cast in new inference
• KT-30406 Fix testIfOrWhenSpecialCall test for new inference
• KT-30590 Report diagnostic about not enough information for inference in NI
• KT-30620 Exception from the compiler when coroutine-inference is involved even with the explicitly specified types
• KT-30656 Exception is occurred when functions with implicit return-stub types are involved in builder-inference
• KT-30658 Exception from the compiler when getting callable reference to a suspend function
• KT-30661 Disable SAM conversions to Kotlin functions in new-inference by default
• KT-30676 Overload resolution ambiguity when there is a callable reference argument and candidates with different functional return types
• KT-30694 No debug metadata is generated for suspend lambdas which capture crossinline
• KT-30724 False positive error about missing equals when one of the operands is incorrectly inferred to Nothing
• KT-30734 No smartcast inside lambda literal in then/else "if" branch
• KT-30737 Try analysing callable reference preemptively
• KT-30780 Compiler crashes on 'private inline' function accessing private constant in 'inline class' (regression)
• KT-30808 NI: False negative SPREAD_OF_NULLABLE with USELESS_ELVIS_RIGHT_IS_NULL
• KT-30816 BasicJvmScriptEvaluator passes constructor parameters in incorrect order
• KT-30826 There isn't report about unsafe call in the new inference (by invalidating smartcast), NPE
• KT-30843 Duplicate JVM class name for expect/actual classes in JvmMultifileClass-annotated file
• KT-30853 Compiler crashes with NewInference and Kotlinx.Coroutines Flow
• KT-30927 Data flow info isn't used for 'this' which is returned from lambda using labeled return
• KT-31081 Implement ArgumentMatch abstraction in new inference
• KT-31113 Fix failing tests from SlicerTestGenerated
• KT-31199 Unresolved callable references with typealias
• KT-31339 Inliner does not remove redundant continuation classes, leading to CNFE in JMH bytecode processing
• KT-31346 Fix diagnostic DSL_SCOPE_VIOLATION for new inference
• KT-31356 False-positive error about violating dsl scope for new-inference
• KT-31360 NI: inconsistently prohibits member usage without explicit receiver specification with star projection and DSL marker

IDE

New Features

• KT-11242 Action to copy project diagnostic information to clipboard
• KT-24292 Support external nullability annotations
• KT-30453 Add plugin option (registry?) to enable new inference only in IDE

Performance Improvements

• KT-13841 Classes and functions should be lazy-parseable
• KT-27106 Performance issue with optimize imports
• KT-30442 Several second lag on project open in KotlinNonJvmSourceRootConverterProvider
• KT-30644 ConfigureKotlinInProjectUtilsKt freezes UI

Fixes

• KT-7380 Imports insertion on paste does not work correctly when there were alias imports in the source file
• KT-10512 Do not delete imports with unresolved parts when optimizing
• KT-13048 "Strip trailing spaces on Save" should not strip trailing spaces inside multiline strings in Kotlin
• KT-17375 Optimize Imports does not remove unused import alias
• KT-27385 Uast: property references should resolve to getters/setters
• KT-28627 Invalid detection of Kotlin jvmTarget inside Idea/gradle build
• KT-29267 Enable ultra-light classes by default
• KT-29892 A lot of threads are waiting in KotlinConfigurationCheckerComponent
• KT-30356 Kotlin facet: all JVM 9+ target platforms are shown as "Target Platform = JVM 9" in Project Structure dialog
• KT-30514 Auto-import with "Add unambiguous imports on the fly" imports enum members from another package
• KT-30583 Kotlin light elements should be isEquivalentTo to it's origins
• KT-30688 Memory leak in the PerModulePackageCacheService.onTooComplexChange method
• KT-30949 Optimize Imports removes used import alias
• KT-30957 Kotlin UAST: USimpleNameReferenceExpression in "imports" for class' member resolves incorrectly to class, not to the member
• KT-31090 java.lang.NoSuchMethodError: org.jetbrains.kotlin.idea.UtilsKt.addModuleDependencyIfNeeded on import of a multiplatform project with Android target (191 IDEA + master)
• KT-31092 Don't check all selected files in CheckComponentsUsageSearchAction.update()
• KT-31319 False positive "Unused import" for provideDelegate extension
• KT-31332 Kotlin AnnotatedElementsSearch does't support Kotlin object

IDE. Completion

• KT-29038 Autocomplete "suspend" into "suspend fun" at top level and class level (except in kts top level)
• KT-29398 Add "arg" postfix template
• KT-30511 Replace extra space after autocompleting data class with file name by parentheses

IDE. Debugger

• KT-10636 Debugger: can't evaluate call of function type parameter inside inline function
• KT-18247 Debugger: class level watches fail to evaluate outside of class instance context
• KT-18263 Settings / Debugger / Java Type Renderers: unqualified Kotlin class members in Java expressions are shown as errors
• KT-23586 Non-trivial properties autocompletion in evaluation window
• KT-30216 Evaluate expression: declarations annotated with Experimental (LEVEL.ERROR) fail due to compilation error
• KT-30610 Debugger: Variables view shows second this instance for inline function even from the same class as caller function
• KT-30714 Breakpoints are shown as invalid for classes that are not loaded yet
• KT-30934 "InvocationException: Exception occurred in target VM" on debugger breakpoint hit (with kotlintest)

IDE. Gradle

• KT-29854 File collection dependency does not work with NMPP+JPS
• KT-30531 Gradle: NodeJS downloading
• KT-30767 Kotlin import uses too much memory when working with big projects

IDE. Gradle. Script

• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-31124 “compileKotlin - configuration not found: kotlinScriptDef, the plugin is probably applied by a mistake” after creating new project with IJ and Kotlin from master

IDE. Hints

• KT-30057 "View->Type info" shows "Type is unknown" for named argument syntax

IDE. Inspections and Intentions

New Features

• KT-11629 Inspection: creating Throwable without throwing it
• KT-12392 Unused import with alias should be highlighted and removed with Optimize Imports
• KT-12721 inspection should be made for converting Integer.toString(int) to int.toString()
• KT-13962 Intention to replace Java collection constructor calls with function calls from stdlib (ArrayList() → arrayListOf())
• KT-15537 Add inspection + intention to replace IntRange.start/endInclusive with first/last
• KT-21195 ReplaceWith intention could save generic type arguments
• KT-25262 Intention: Rename class to containing file name
• KT-25439 Inspection "Map replaceable with EnumMap"
• KT-26269 Inspection to replace associate with associateWith or associateBy
• KT-26629 Inspection to replace == operator on Double.NaN with equals call
• KT-27411 Inspection and Quickfix to replace System.exit() with exitProcess()
• KT-29344 Convert property initializer to getter: suggest on property name
• KT-29666 Quickfix for "DEPRECATED_JAVA_ANNOTATION": migrate arguments
• KT-29798 Add 'Covariant equals' inspection
• KT-29799 Inspection: class with non-null self-reference as a parameter in its primary constructor
• KT-30078 Add "Add getter/setter" quick fix for uninitialized property
• KT-30381 Inspection + quickfix to replace non-null assertion with return
• KT-30389 Fix to convert argument to Int: suggest roundToInt()
• KT-30501 Add inspection to replace filter { it is Foo } with filterIsInstance and filter { it != null } with filterNotNull
• KT-30612 Unused symbol inspection should detect enum entry
• KT-30663 Fully qualified name is added on quick fix for original class name if import alias exists
• KT-30725 Inspection which replaces .sorted().first() with .min()

Fixes

• KT-5412 "Replace non-null assertion with if expression" should replace parent expression
• KT-13549 "Package directive doesn't match file location" for root package
• KT-14040 Secondary enum class constructor is marked as "unused" by IDE
• KT-18459 Spring: "Autowiring for Bean Class (Kotlin)" inspection adds not working @Named annotation to property
• KT-21526 used class is marked as "never used"
• KT-22896 "Change function signature" quickfix on "x overrides nothing" doesn't rename type arguments
• KT-27089 ReplaceWith quickfix doesn't take into account generic parameter
• KT-27821 SimplifiableCallChain inspection quick fix removes comments for intermediate operations
• KT-28485 Incorrect parameter name after running "Add parameter to function" intention when argument variable is upper case const
• KT-28619 "Add braces to 'if' statement" moves end-of-line comment inside an if branch if statement inside if is block
• KT-29556 "Remove redundant 'let' call" doesn't rename parameter with convention invoke call
• KT-29677 "Specify type explicitly" intention produces invalid output for type escaped with backticks
• KT-29764 "Convert property to function" intention doesn't warn about the property overloads at child class constructor
• KT-29812 False positive for HasPlatformType with member extension on 'dynamic'
• KT-29869 'WhenWithOnlyElse': possibly useless inspection with false grey warning highlighting during editing the code
• KT-30038 'Remove redundant Unit" false positive when return type is nullable Unit
• KT-30082 False positive "redundant .let call" for lambda functions stored in nullable references
• KT-30173 "Nested lambda has shadowed implicit parameter" is suggested when both parameters are logically the same
• KT-30208 Convert to anonymous object: lambda generic type argument is lost
• KT-30215 No "surround with null" check is suggested for an assignment
• KT-30228 'Convert to also/apply/run/with' intention behaves differently depending on the position of infix function call
• KT-30457 MoveVariableDeclarationIntoWhen: do not report gray warning on variable declarations taking multiple lines / containing preemptive returns
• KT-30481 Do not report ImplicitNullableNothingType on a function/property that overrides a function/property of type 'Nothing?'
• KT-30527 False positive "Type alias is never used" with import of enum member
• KT-30559 Redundant Getter, Redundant Setter: reduce range to getter/setter header
• KT-30565 False positive "Suspicious 'var' property" inspection with annotated default property getter
• KT-30579 Kotlin-gradle groovy inspections should depend on Groovy plugin
• KT-30613 "Convert to anonymous function" should not insert named argument when interoping with Java functions
• KT-30614 String templates suggest removing curly braces for backtick escaped identifiers
• KT-30622 Add names to call arguments starting from given argument
• KT-30637 False positive "unused constructor" for local class
• KT-30669 Import quick fix does not work for property/function with original name if import alias for them exist
• KT-30761 Replace assert boolean with assert equality produces uncompilable code when compared arguments type are different
• KT-30769 Override quickfix creates "sealed fun"
• KT-30833 Exception after "Introduce Import Alias" if invoke in import
• KT-30876 SimplifyNotNullAssert inspection changes semantics
• KT-30900 Invert 'if' condition respects neither code formatting nor inline comments
• KT-30910 "Use property access syntax" is not suitable as text for inspection problem text
• KT-30916 Quickfix "Remove redundant qualifier name" can't work with user type with generic parameter
• KT-31103 Don't invoke Gradle related inspections when Gradle plugin is disabled
• KT-31349 Add name to argument should not be suggested for Java library classes
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument

IDE. Libraries

• KT-30790 Unstable IDE navigation behavior to expect/actual symbols in stdlib
• KT-30821 K/N: Navigation downwards the hierarchy in stdlib source code opens to stubs

IDE. Navigation

• KT-18322 Find Usages not finding Java usage of @JvmField declared in primary constructor
• KT-27332 Gutter icons are still shown even if disabled

IDE. Refactorings

• KT-30471 Make KotlinElementActionsFactory.createChangeParametersActions able to just add parameters

IDE. Run Configurations

• KT-29352 Kotlin + Java 11 + Windows : impossible to run applications with long command lines, even with dynamic.classpath=true

IDE. Scratch

• KT-29642 Once hidden, Scratch Output window wouldn't show the results unless the project is reopened

IDE. Script

• KT-30295 Resolver for 'completion/highlighting in ScriptDependenciesSourceInfo...' does not know how to resolve [] or [Library(null)]
• KT-30690 Highlighting for scripts in diff view doesn't work for left part

IDE. Tests Support

• KT-30995 Gradle test runner: "No tasks available" for a test class in non-MPP project

IDE. Wizards

• KT-30645 Update New Project Wizard templates related to Kotlin/JS

Libraries

• KT-30174 Annotation for experimental stdlib API
• KT-30451 Redundant call of selector in maxBy&minBy
• KT-30560 Fix Throwable::addSuppressed from stdlib to make it work without stdlib-jdk7 in runtime

Reflection

• KT-29041 KAnnotatedElement should have an extension function to verify if certain annotation is present
• KT-30344 Avoid using .kotlin_module in kotlin-reflect

Tools. Android Extensions

• KT-30993 Android Extensions: Make @Parcelize functionality non-experimental

Tools. CLI

• KT-27638 Add -Xjava-sources compiler argument to specify directories with .java source files which can be referenced from the compiled Kotlin sources
• KT-27778 Add -Xpackage-prefix compiler argument to specify package prefix for Java sources resolution

Tools. Compiler Plugins

• KT-30343 Add new Quarkus preset to all-open compiler plugin

Tools. Gradle

New Features

• KT-20156 Publish the Kotlin Javascript Gradle plugin to the Gradle Plugins Portal
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-27273 Support the Gradle 'application' plugin in new MPP or provide an alternative
• KT-30528 Gradle, JS tests: support basic builtin test runner
• KT-31015 Gradle, JS: Change default for new kotlin-js and experimental kotlin-multiplatform plugins

Fixes

• KT-13256 CompileJava tasks in Kotlin2Js Gradle plugin
• KT-16355 Rename "compileKotlin2Js" Gradle task to "compileKotlinJs"
• KT-26255 Using the jvmWithJava preset in new MPP leads to counter-intuitive source set names and directory structure
• KT-27640 Do not use -Xbuild-file when invoking the Kotlin compiler in Gradle plugins
• KT-29284 kotlin2js plugin applies java plugin
• KT-30132 Could not initialize class org.jetbrains.kotlin.com.intellij.openapi.util.io.FileUtil on build by gradle
• KT-30596 Kotlin Gradle Plugin: Forward stdout and stderr logger of out of process though gradle logger
• KT-31106 Kotlin compilation fails with locked build script dependencies and Gradle 5

Tools. J2K

• KT-23023 J2K: Inspection to convert Arrays.copyOf(a, size) to a.copyOf(size)
• KT-26550 J2K: Check context/applicability of conversion, don't suggest for libraries, jars, etc.
• KT-29568 Disabled "Convert Java File to Kotlin File" action is shown in project view context menu for XML files

Tools. kapt

• KT-26203 kapt.use.worker.api=true throws a NullPointerException on Java 10/11
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31064 Periodically build crash when using incremental kapt

CHANGELOG

1.3.40

Compiler

New Features

• KT-29915 Implement typeOf on JVM

Performance Improvements

• KT-17755 Optimize trimIndent and trimMargin on constant strings
• KT-30603 Compiler performance issue: VariableLivenessKt.useVar performance

Fixes

• KT-19227 Load built-ins from dependencies by default in the compiler, support erroneous "fallback" built-ins
• KT-23426 Actual typealias to Java enum does not match expected enum because of modality
• KT-23854 Inference for common type of two captured types
• KT-25105 False-positive warning "Remove final upper bound" on generic override
• KT-25302 New inference: "Type mismatch" between star projection and Any? type argument in specific case
• KT-25433 Wrong order of fixing type variables for callable references
• KT-26386 Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-26412 Wrong LVT generated if decomposed parameter of suspend lambda is not the first parameter.
• KT-27097 JvmMultifileClass + JvmName causes NoSuchMethodError on sealed class hierarchy for top-level members
• KT-28534 Local variable entries are missing in LVT for suspend lambda parameters
• KT-28535 Rename result to $result in coroutines' LVT
• KT-29184 Implement inference for coroutines according to the @BuilderInference contract in NI
• KT-29772 Contracts don't work if contract function is fully qualified (FQN)
• KT-29790 Incorrect version requirement in metadata of anonymous class for suspend lambda
• KT-29948 NI: incorrect DSLMarker behaviour with generic star projection
• KT-30021 +NewInference on Kotlin Native :: java.lang.StackOverflowError
• KT-30242 Statements are not coerced to Unit in last expressions of lambda
• KT-30243 Include FIR modules into compiler
• KT-30250 Rewrite at slice exception for callable reference argument inside delegated expression
• KT-30292 Reference to function is unresolved when LHS is a star-projected type
• KT-30293 Wrong intersection type for common supertype from String and integer type
• KT-30370 Call is completed too early when there is "Nothing" constraint
• KT-30405 Support expected type from cast in new inference
• KT-30406 Fix testIfOrWhenSpecialCall test for new inference
• KT-30590 Report diagnostic about not enough information for inference in NI
• KT-30620 Exception from the compiler when coroutine-inference is involved even with the explicitly specified types
• KT-30656 Exception is occurred when functions with implicit return-stub types are involved in builder-inference
• KT-30658 Exception from the compiler when getting callable reference to a suspend function
• KT-30661 Disable SAM conversions to Kotlin functions in new-inference by default
• KT-30676 Overload resolution ambiguity when there is a callable reference argument and candidates with different functional return types
• KT-30694 No debug metadata is generated for suspend lambdas which capture crossinline
• KT-30724 False positive error about missing equals when one of the operands is incorrectly inferred to Nothing
• KT-30734 No smartcast inside lambda literal in then/else "if" branch
• KT-30737 Try analysing callable reference preemptively
• KT-30780 Compiler crashes on 'private inline' function accessing private constant in 'inline class' (regression)
• KT-30808 NI: False negative SPREAD_OF_NULLABLE with USELESS_ELVIS_RIGHT_IS_NULL
• KT-30816 BasicJvmScriptEvaluator passes constructor parameters in incorrect order
• KT-30826 There isn't report about unsafe call in the new inference (by invalidating smartcast), NPE
• KT-30843 Duplicate JVM class name for expect/actual classes in JvmMultifileClass-annotated file
• KT-30853 Compiler crashes with NewInference and Kotlinx.Coroutines Flow
• KT-30927 Data flow info isn't used for 'this' which is returned from lambda using labeled return
• KT-31081 Implement ArgumentMatch abstraction in new inference
• KT-31113 Fix failing tests from SlicerTestGenerated
• KT-31199 Unresolved callable references with typealias
• KT-31339 Inliner does not remove redundant continuation classes, leading to CNFE in JMH bytecode processing
• KT-31346 Fix diagnostic DSL_SCOPE_VIOLATION for new inference
• KT-31356 False-positive error about violating dsl scope for new-inference
• KT-31360 NI: inconsistently prohibits member usage without explicit receiver specification with star projection and DSL marker

IDE

New Features

• KT-11242 Action to copy project diagnostic information to clipboard
• KT-24292 Support external nullability annotations
• KT-30453 Add plugin option (registry?) to enable new inference only in IDE

Performance Improvements

• KT-13841 Classes and functions should be lazy-parseable
• KT-27106 Performance issue with optimize imports
• KT-30442 Several second lag on project open in KotlinNonJvmSourceRootConverterProvider
• KT-30644 ConfigureKotlinInProjectUtilsKt freezes UI

Fixes

• KT-7380 Imports insertion on paste does not work correctly when there were alias imports in the source file
• KT-10512 Do not delete imports with unresolved parts when optimizing
• KT-13048 "Strip trailing spaces on Save" should not strip trailing spaces inside multiline strings in Kotlin
• KT-17375 Optimize Imports does not remove unused import alias
• KT-27385 Uast: property references should resolve to getters/setters
• KT-28627 Invalid detection of Kotlin jvmTarget inside Idea/gradle build
• KT-29267 Enable ultra-light classes by default
• KT-29892 A lot of threads are waiting in KotlinConfigurationCheckerComponent
• KT-30356 Kotlin facet: all JVM 9+ target platforms are shown as "Target Platform = JVM 9" in Project Structure dialog
• KT-30514 Auto-import with "Add unambiguous imports on the fly" imports enum members from another package
• KT-30583 Kotlin light elements should be isEquivalentTo to it's origins
• KT-30688 Memory leak in the PerModulePackageCacheService.onTooComplexChange method
• KT-30949 Optimize Imports removes used import alias
• KT-30957 Kotlin UAST: USimpleNameReferenceExpression in "imports" for class' member resolves incorrectly to class, not to the member
• KT-31090 java.lang.NoSuchMethodError: org.jetbrains.kotlin.idea.UtilsKt.addModuleDependencyIfNeeded on import of a multiplatform project with Android target (191 IDEA + master)
• KT-31092 Don't check all selected files in CheckComponentsUsageSearchAction.update()
• KT-31319 False positive "Unused import" for provideDelegate extension
• KT-31332 Kotlin AnnotatedElementsSearch does't support Kotlin object

IDE. Completion

• KT-29038 Autocomplete "suspend" into "suspend fun" at top level and class level (except in kts top level)
• KT-29398 Add "arg" postfix template
• KT-30511 Replace extra space after autocompleting data class with file name by parentheses

IDE. Debugger

• KT-10636 Debugger: can't evaluate call of function type parameter inside inline function
• KT-18247 Debugger: class level watches fail to evaluate outside of class instance context
• KT-18263 Settings / Debugger / Java Type Renderers: unqualified Kotlin class members in Java expressions are shown as errors
• KT-23586 Non-trivial properties autocompletion in evaluation window
• KT-30216 Evaluate expression: declarations annotated with Experimental (LEVEL.ERROR) fail due to compilation error
• KT-30610 Debugger: Variables view shows second this instance for inline function even from the same class as caller function
• KT-30714 Breakpoints are shown as invalid for classes that are not loaded yet
• KT-30934 "InvocationException: Exception occurred in target VM" on debugger breakpoint hit (with kotlintest)

IDE. Gradle

• KT-29854 File collection dependency does not work with NMPP+JPS
• KT-30531 Gradle: NodeJS downloading
• KT-30767 Kotlin import uses too much memory when working with big projects

IDE. Gradle. Script

• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-31124 “compileKotlin - configuration not found: kotlinScriptDef, the plugin is probably applied by a mistake” after creating new project with IJ and Kotlin from master

IDE. Hints

• KT-30057 "View->Type info" shows "Type is unknown" for named argument syntax

IDE. Inspections and Intentions

New Features

• KT-11629 Inspection: creating Throwable without throwing it
• KT-12392 Unused import with alias should be highlighted and removed with Optimize Imports
• KT-12721 inspection should be made for converting Integer.toString(int) to int.toString()
• KT-13962 Intention to replace Java collection constructor calls with function calls from stdlib (ArrayList() → arrayListOf())
• KT-15537 Add inspection + intention to replace IntRange.start/endInclusive with first/last
• KT-21195 ReplaceWith intention could save generic type arguments
• KT-25262 Intention: Rename class to containing file name
• KT-25439 Inspection "Map replaceable with EnumMap"
• KT-26269 Inspection to replace associate with associateWith or associateBy
• KT-26629 Inspection to replace == operator on Double.NaN with equals call
• KT-27411 Inspection and Quickfix to replace System.exit() with exitProcess()
• KT-29344 Convert property initializer to getter: suggest on property name
• KT-29666 Quickfix for "DEPRECATED_JAVA_ANNOTATION": migrate arguments
• KT-29798 Add 'Covariant equals' inspection
• KT-29799 Inspection: class with non-null self-reference as a parameter in its primary constructor
• KT-30078 Add "Add getter/setter" quick fix for uninitialized property
• KT-30381 Inspection + quickfix to replace non-null assertion with return
• KT-30389 Fix to convert argument to Int: suggest roundToInt()
• KT-30501 Add inspection to replace filter { it is Foo } with filterIsInstance and filter { it != null } with filterNotNull
• KT-30612 Unused symbol inspection should detect enum entry
• KT-30663 Fully qualified name is added on quick fix for original class name if import alias exists
• KT-30725 Inspection which replaces .sorted().first() with .min()

Fixes

• KT-5412 "Replace non-null assertion with if expression" should replace parent expression
• KT-13549 "Package directive doesn't match file location" for root package
• KT-14040 Secondary enum class constructor is marked as "unused" by IDE
• KT-18459 Spring: "Autowiring for Bean Class (Kotlin)" inspection adds not working @Named annotation to property
• KT-21526 used class is marked as "never used"
• KT-22896 "Change function signature" quickfix on "x overrides nothing" doesn't rename type arguments
• KT-27089 ReplaceWith quickfix doesn't take into account generic parameter
• KT-27821 SimplifiableCallChain inspection quick fix removes comments for intermediate operations
• KT-28485 Incorrect parameter name after running "Add parameter to function" intention when argument variable is upper case const
• KT-28619 "Add braces to 'if' statement" moves end-of-line comment inside an if branch if statement inside if is block
• KT-29556 "Remove redundant 'let' call" doesn't rename parameter with convention invoke call
• KT-29677 "Specify type explicitly" intention produces invalid output for type escaped with backticks
• KT-29764 "Convert property to function" intention doesn't warn about the property overloads at child class constructor
• KT-29812 False positive for HasPlatformType with member extension on 'dynamic'
• KT-29869 'WhenWithOnlyElse': possibly useless inspection with false grey warning highlighting during editing the code
• KT-30038 'Remove redundant Unit" false positive when return type is nullable Unit
• KT-30082 False positive "redundant .let call" for lambda functions stored in nullable references
• KT-30173 "Nested lambda has shadowed implicit parameter" is suggested when both parameters are logically the same
• KT-30208 Convert to anonymous object: lambda generic type argument is lost
• KT-30215 No "surround with null" check is suggested for an assignment
• KT-30228 'Convert to also/apply/run/with' intention behaves differently depending on the position of infix function call
• KT-30457 MoveVariableDeclarationIntoWhen: do not report gray warning on variable declarations taking multiple lines / containing preemptive returns
• KT-30481 Do not report ImplicitNullableNothingType on a function/property that overrides a function/property of type 'Nothing?'
• KT-30527 False positive "Type alias is never used" with import of enum member
• KT-30559 Redundant Getter, Redundant Setter: reduce range to getter/setter header
• KT-30565 False positive "Suspicious 'var' property" inspection with annotated default property getter
• KT-30579 Kotlin-gradle groovy inspections should depend on Groovy plugin
• KT-30613 "Convert to anonymous function" should not insert named argument when interoping with Java functions
• KT-30614 String templates suggest removing curly braces for backtick escaped identifiers
• KT-30622 Add names to call arguments starting from given argument
• KT-30637 False positive "unused constructor" for local class
• KT-30669 Import quick fix does not work for property/function with original name if import alias for them exist
• KT-30761 Replace assert boolean with assert equality produces uncompilable code when compared arguments type are different
• KT-30769 Override quickfix creates "sealed fun"
• KT-30833 Exception after "Introduce Import Alias" if invoke in import
• KT-30876 SimplifyNotNullAssert inspection changes semantics
• KT-30900 Invert 'if' condition respects neither code formatting nor inline comments
• KT-30910 "Use property access syntax" is not suitable as text for inspection problem text
• KT-30916 Quickfix "Remove redundant qualifier name" can't work with user type with generic parameter
• KT-31103 Don't invoke Gradle related inspections when Gradle plugin is disabled
• KT-31349 Add name to argument should not be suggested for Java library classes
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument

IDE. Libraries

• KT-30790 Unstable IDE navigation behavior to expect/actual symbols in stdlib
• KT-30821 K/N: Navigation downwards the hierarchy in stdlib source code opens to stubs

IDE. Navigation

• KT-18322 Find Usages not finding Java usage of @JvmField declared in primary constructor
• KT-27332 Gutter icons are still shown even if disabled

IDE. Refactorings

• KT-30471 Make KotlinElementActionsFactory.createChangeParametersActions able to just add parameters

IDE. Run Configurations

• KT-29352 Kotlin + Java 11 + Windows : impossible to run applications with long command lines, even with dynamic.classpath=true

IDE. Scratch

• KT-29642 Once hidden, Scratch Output window wouldn't show the results unless the project is reopened

IDE. Script

• KT-30295 Resolver for 'completion/highlighting in ScriptDependenciesSourceInfo...' does not know how to resolve [] or [Library(null)]
• KT-30690 Highlighting for scripts in diff view doesn't work for left part

IDE. Tests Support

• KT-30995 Gradle test runner: "No tasks available" for a test class in non-MPP project

IDE. Wizards

• KT-30645 Update New Project Wizard templates related to Kotlin/JS

Libraries

• KT-30174 Annotation for experimental stdlib API
• KT-30451 Redundant call of selector in maxBy&minBy
• KT-30560 Fix Throwable::addSuppressed from stdlib to make it work without stdlib-jdk7 in runtime

Reflection

• KT-29041 KAnnotatedElement should have an extension function to verify if certain annotation is present
• KT-30344 Avoid using .kotlin_module in kotlin-reflect

Tools. Android Extensions

• KT-30993 Android Extensions: Make @Parcelize functionality non-experimental

Tools. CLI

• KT-27638 Add -Xjava-sources compiler argument to specify directories with .java source files which can be referenced from the compiled Kotlin sources
• KT-27778 Add -Xpackage-prefix compiler argument to specify package prefix for Java sources resolution

Tools. Compiler Plugins

• KT-30343 Add new Quarkus preset to all-open compiler plugin

Tools. Gradle

New Features

• KT-20156 Publish the Kotlin Javascript Gradle plugin to the Gradle Plugins Portal
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-27273 Support the Gradle 'application' plugin in new MPP or provide an alternative
• KT-30528 Gradle, JS tests: support basic builtin test runner
• KT-31015 Gradle, JS: Change default for new kotlin-js and experimental kotlin-multiplatform plugins

Fixes

• KT-13256 CompileJava tasks in Kotlin2Js Gradle plugin
• KT-16355 Rename "compileKotlin2Js" Gradle task to "compileKotlinJs"
• KT-26255 Using the jvmWithJava preset in new MPP leads to counter-intuitive source set names and directory structure
• KT-27640 Do not use -Xbuild-file when invoking the Kotlin compiler in Gradle plugins
• KT-29284 kotlin2js plugin applies java plugin
• KT-30132 Could not initialize class org.jetbrains.kotlin.com.intellij.openapi.util.io.FileUtil on build by gradle
• KT-30596 Kotlin Gradle Plugin: Forward stdout and stderr logger of out of process though gradle logger
• KT-31106 Kotlin compilation fails with locked build script dependencies and Gradle 5

Tools. J2K

• KT-23023 J2K: Inspection to convert Arrays.copyOf(a, size) to a.copyOf(size)
• KT-26550 J2K: Check context/applicability of conversion, don't suggest for libraries, jars, etc.
• KT-29568 Disabled "Convert Java File to Kotlin File" action is shown in project view context menu for XML files

Tools. kapt

• KT-26203 kapt.use.worker.api=true throws a NullPointerException on Java 10/11
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31064 Periodically build crash when using incremental kapt

1.3.31

Compiler

• KT-26418 Back-end (JVM) Internal error when compiling decorated suspend inline functions
• KT-26925 Decorated suspend inline function continuation resumes in wrong spot
• KT-30706 Passing noinline lambda as (cross)inline parameter result in wrong state-machine
• KT-30707 Java interop of coroutines inside inline functions is broken
• KT-30997 Crash with suspend crossinline

IDE. Inspections and Intentions

• KT-30879 False positive "Redundant qualifier name"
• KT-31112 "Remove redundant qualifier name" inspection false positive for property with irrelevant import

JavaScript

• KT-31007 Kotlin/JS 1.3.30 - private method in an interface in the external library causes ReferenceError

Tools. Gradle

• KT-31027 java.lang.NoSuchMethodError: No static method hashCode(Z)I in class Ljava/lang/Boolean; or its super classes (declaration of 'java.lang.Boolean' appears in /system/framework/core-libart.jar)

Tools. kapt

• KT-30979 Issue with Dagger2 providers MissingBinding with 1.3.30

Previous releases

This release also includes the fixes and improvements from the previous releases.

CHANGELOG

1.3.30

Compiler

New Features

• KT-19664 Allow more permissive visibility for non-virtual actual declarations
• KT-29586 Add support for Android platform annotations
• KT-29604 Do not implicitly propagate deprecations originated in Java

Performance Improvements

• KT-24876 Emit calls to java.lang.Long.divideUnsigned for unsigned types when target version is 1.8
• KT-25974 'when' by unsigned integers is not translated to tableswitch/lookupswitch
• KT-28015 Coroutine state-machine shall use Result.throwOnFailure
• KT-29229 Intrinsify 'in' operator for unsigned integer ranges
• KT-29230 Specialize 'next' method call for unsigned integer range and progression iterators

Fixes

• KT-7185 Parse import directives in the middle of the file, report a diagnostic instead
• KT-7237 Parser recovery (angle bracket mismatch)
• KT-11656 Could not generate LightClass because of ISE from bridge generation on invalid code
• KT-13497 Better recovery in comma-separated lists in case of missing comma
• KT-13703 Restore parser better when class is missing from enum declaration
• KT-13731 Recover parser on value parameter without a type
• KT-14227 Incorrect code is generated when using MutableMap.set with plusAssign operator
• KT-19389 Couldn't inline method call 'with'
• KT-20065 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with generic typealias
• KT-20322 Debug: member value returned from suspending function is not updated immediately
• KT-20780 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with parameterized inner type alias
• KT-21405 Throwable “Rewrite at slice LEXICAL_SCOPE key: VALUE_PARAMETER_LIST” on editing string literal in kotlin-js module
• KT-21775 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with typealias used from a different module
• KT-22818 "UnsupportedOperationException: Don't know how to generate outer expression" on using non-trivial expression in default argument of expect function
• KT-23117 Local delegate + local object = NoSuchMethodError
• KT-23701 Report error when -Xmultifile-parts-inherit is used and relevant JvmMultifileClass parts have any state
• KT-23992 Target prefixes for annotations on supertype list elements are not checked
• KT-24490 Wrong type is inferred when last expression in lambda has functional type
• KT-24871 Optimize iteration and contains for UIntRange/ULongRange
• KT-24964 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with Validated typealias from Arrow
• KT-25383 Named function as last statement in lambda doesn't coerce to Unit
• KT-25431 Type mismatch when trying to bind mutable property with complex common system
• KT-25435 Try/catch as the last expression of lambda cause type mismatch
• KT-25437 Type variable fixation of postponed arguments and type variables with Nothing constraint
• KT-25446 Empty labeled return doesn't force coercion to Unit
• KT-26069 NoSuchMethodError on calling remove/getOrDefault on a Kotlin subclass of Java subclass of Map
• KT-26638 Check for repeatablilty of annotations doesn't take into account annotations with use-site target
• KT-26816 Lambdas to Nothing is inferred if multilevel collections is used (listOf, mapOf, etc)
• KT-27190 State machine elimination after inlining stopped working (regression)
• KT-27241 Contracts: smartcasts don't work correctly if type checking for contract function is used
• KT-27565 Lack of fallback resolution for SAM conversions for Kotlin functions in new inference
• KT-27799 Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects
• KT-28182 Kotlin Bytecode tool window shows incorrect output on annotated property with backing field
• KT-28236 "Cannot serialize error type: [ERROR : Unknown type parameter 2]" with inferred type arguments in generic extension function from Arrow
• KT-28309 Do not generate LVT entries with different types pointing to the same slot, but have different types
• KT-28317 Strange behavior in testJvmAssertInlineFunctionAssertionsEnabled on Jdk 6 and exception on JDK 8
• KT-28453 Mark anonymous classes for callable references as synthetic
• KT-28598 Type is inferred incorrectly to Any on a deep generic type with out projection
• KT-28654 No report about type mismatch inside a lambda in generic functions with a type parameter as a return type
• KT-28670 Not null smartcasts on an intersection of nullable types don't work
• KT-28718 progressive mode plus new inference result in different floating-point number comparisons
• KT-28810 Suspend function's continuation parameter is missing from LVT
• KT-28855 NoSuchMethodError with vararg of unsigned Int in generic class constructor
• KT-28984 Exception when subtype of kotlin.Function is used as an expected one for lambda or callable reference
• KT-28993 Incorrect behavior when two lambdas are passed outside a parenthesized argument list
• KT-29144 Interface with companion object generates invalid bytecode in progressive mode
• KT-29228 Intrinsify 'for' loop for unsigned integer ranges and progressions
• KT-29324 Warnings indexing jdk 11 classes
• KT-29367 New inference doesn't wrap annotated type from java to TypeWithEnhancement
• KT-29507 @field-targeted annotation on property with both getter and setter is absent from bytecode
• KT-29705 'Rewrite at slice CONSTRUCTOR` of JS class while editing another JVM-class
• KT-29792 UnsupportedOperationException: Unsupported annotation argument type when using Java annotation with infinity or NaN as a default value
• KT-29891 Kotlin doesn't allow to use local class literals as annotation arguments
• KT-29912 Crossinline nonsuspend lambda leads to KNPE during inlining
• KT-29965 Don't generate annotation on $default method
• KT-30030 Extensive 'Rewrite at slice'-exception with contracts in JS module of multiplatform project
• KT-22043 Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4
• KT-26150 KotlinFrontendException is thrown when callsInPlace called twice with different InvocationKind in functions with contracts
• KT-26153 Contract is allowed when it's at the beginning in control flow terms, but not in tokens order terms (contract doesn't work)
• KT-26191 Contract may not be the first statement if it's part of the expression
• KT-29178 Prohibit arrays of reified type parameters in annotation arguments in local classes / anonymous objects
• KT-20507 PROTECTED_CONSTRUCTOR_NOT_IN_SUPER_CALL not reported for generic base class constructor call, IAE at run-time
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-28285 NullPointerException on calling Array constructor compiled via Excelsior JET
• KT-29376 Report a deprecation warning when comparing enum to any other incompatible type
• KT-29884 Report warning on @synchronized on inline method
• KT-30073 ClassCastException on coroutine start with crossinline lambda
• KT-30597 "Extend selection" throws exception in empty class body case

IDE

New Features

• KT-26950 Support Multiline TODO comments
• KT-29034 Make JvmDeclarationSearch find private fields in kotlin classes

Performance Improvements

• KT-29457 FindImplicitNothingAction#update freezes UI for 30 secs
• KT-29551 CreateKotlinSdkActivity runs on UI thread

Fixes

• KT-11143 Do not insert closing brace for string template between open brace and identifier
• KT-18503 Optimize imports produces red code
• KT-27283 KotlinULiteralExpression and PsiLanguageInjectionHost mismatch
• KT-27794 KotlinAnnotatedElementsSearcher doesn't process method parameters
• KT-28272 UAST: Need to be able to identify SAM conversions
• KT-28360 Getting tons of "There are 2 classes with same fqName" logs in IntelliJ
• KT-28739 Bad caret position after Insert curly braces around variable inspection
• KT-29013 Injection with interpolation loses suffix
• KT-29025 Implement UReferenceExpression.referenceNameElement for Kotlin
• KT-29287 Exception in ultra-light classes on method annotated with @throws
• KT-29381 Highlight return lambda expressions when cursor is one the call with lambda argument
• KT-29434 Can not detect injection host in string passed as argument into arrayOf() function
• KT-29464 Project reopening does not create missing Kotlin SDK for Native modules (like it does for other non-JVM ones)
• KT-29467 Maven/Gradle re-import does not add missing Kotlin SDK for kotlin2js modules (non-MPP JavaScript)
• KT-29804 Probable error in the "Kotlin (Mobile Android/iOS)" new project template in IntelliJ
• KT-30033 UAST: Delegation expression missing from parse tree
• KT-30388 Disable constant exception reporting from release versions
• KT-30524 "java.lang.IllegalStateException: This method shouldn't be invoked for LOCAL visibility" on add import
• KT-30534 KotlinUObjectLiteralExpression returns classReference whose referenceNameElement is null
• KT-30546 Kotlin UImportStatement's children references always resolve to null

IDE. Android

• KT-29847 Many IDEA plugins are not loaded in presence of Kotlin plugin: "Plugins should not have cyclic dependencies"

IDE. Code Style, Formatting

• KT-23295 One-line comment indentation in functions with expression body
• KT-28905 When is "... if long" hitting?
• KT-29304 Settings / Code Style / Kotlin mentions "methods" instead of functions

IDE. Completion

• KT-18663 Support "smart enter/complete statement" completion for method calls
• KT-28394 Improve code completion for top level class/interface to incorporate filename
• KT-29435 org.jetbrains.kotlin.types.TypeUtils.contains hanging forever and freezing IntelliJ
• KT-27915 Stop auto-completing braces for companion objects

IDE. Debugger

• KT-22250 Evaluate: 'this' shows different values when evaluated as a variable/watch
• KT-24829 Access to coroutineContext in 'Evaluate expression'
• KT-25220 Evaluator: a instance of Pair returned instead of String ("Extract function" failed)
• KT-25222 Evaluate: ClassCastException: ObjectValue cannot be cast to IntValue ("Extract function" failed)
• KT-26913 Change local variable name mangling ($receiver -> this_)
• KT-28087 [Kotlin/JVM view] Inconsistent debugging data inside forEachIndexed
• KT-28134 Separate JVM/Kotlin views in "Variables" tool window
• KT-28192 Exception from KotlinEvaluator: cannot find local variable
• KT-28680 Missing this word completion in "Evaluate expression" window
• KT-28728 Async stack trace support for Kotlin coroutines
• KT-21650 Debugger: Can't evaluate value, resolution error
• KT-23828 Debugger: "Smart cast is impossible" when evaluating expression
• KT-29661 Evaluate expression: "Cannot find local variable" for variable name escaped with backticks
• KT-29814 Can't evaluate a property on star-projected type
• KT-29871 Debugger in IDE does not handle correctly extensions.
• KT-30182 Incorrect KT elvis expression debugger evaluation
• KT-29189 [BE] 'Step Over' falls through 'return when' (and 'return if') instead of executing individual branches
• KT-29234 ISE “@NotNull method org/jetbrains/kotlin/codegen/binding/CodegenBinding.anonymousClassForCallable must not return null” on debugging with breakpoints in Kotlin script file
• KT-29423 Unable to evaluate lambdas on jdk 9-11
• KT-30220 Empty variables view when breakpoint inside an lambda inside class
• KT-30318 KotlinCoroutinesAsyncStackTraceProvider slows down java debugging

IDE. Decompiler

• KT-9618 Exception in ClassClsStubBuilder.createNestedClassStub() while opening recent project
• KT-29427 Exception in ClassClsStubBuilder.createNestedClassStub() for obfuscated library

IDE. Gradle

• KT-26865 Gradle build in IDE: error messages in Native sources are not hyperlinks
• KT-28515 Failed to import Kotlin project with gradle 5.0
• KT-29564 kotlin.parallel.tasks.in.project=true causes idea to create kotlin modules with target JVM 1.6
• KT-30076 Memory leaks in Kotlin import
• KT-30379 Gradle 5.3 publishes an MPP with broken Maven scope mapping

IDE. Gradle. Script

• KT-27684 Gradle Kotlin DSL: the rootProject field is unresolved in IDEA for a common module
• KT-29465 IndexNotReadyException on context menu invocation for build.gradle.kts file
• KT-29707 "Navigate declaration" navigates to compiled class in gradle cache folder instead of classes defined in gradle buildSrc folder
• KT-29832 Multiple Script Definitions for settings.gradle.kts
• KT-30623 Errors in build.gradle.kts after applying new script dependencies

IDE. Hints

• KT-29196 Variable type hints are redundant for constructor calls of nested classes
• KT-30058 IndexNotReadyException from quick documentation when popup is active

IDE. Hints. Inlay

• KT-19558 Wrong position of type hint while renaming Kotlin variable
• KT-27438 "Show lambda return expression hints" breaks code indentation
• KT-28870 Rework "Lambda return expression" hint as between_lines_hint of disable it by default

IDE. Hints. Parameter Info

• KT-29574 Incorrect parameter info popup for lambda nested in object

IDE. Inspections and Intentions

New Features

• KT-16118 "Introduce import alias" intention
• KT-17119 Inspection for (Scala-like) = { ... } syntax without expected type in function definition
• KT-26128 Inspection for suspension inside synchronized and withLock functions
• KT-27556 Add intention for collections, !collection.isEmpty() -> collection.isNotEmpty()
• KT-27670 Add quick fix: wrap expression in a lambda if compatible functional type is required
• KT-28803 Inspection: result of enum entries comparison is always false / true
• KT-28953 Add intention to add underscores to decimal numerical literal
• KT-29001 Add intention to move variable declaration before when-expression into when's subject
• KT-29113 Warn about redundant requireNotNull and checkNotNull usages
• KT-29321 "Remove empty primary constructor": apply for enum entries
• KT-12134 Suggest to remove qualifier in FQN name
• KT-17278 Inspection to replace Java 8 Map.forEach with Kotlin's forEach
• KT-26965 Add inspection + quickfix for replacing Collection.count() with .size
• KT-30123 Add intention to replace isEmpty/isNotEmpty method negation
• KT-25272 Unused expression as last expression of normal function should have quickfix to add "return"
• KT-30456 Improve: intention "Introduce Import Alias" should suggest new names for the new alias.

Fixes

• KT-7593 On splitting property declaration for functional expression additional bracket added
• KT-12273 "Replace with operator" intention is suggested for some non-operator functions and produces invalid code
• KT-18715 Replace if with elvis swallows comments
• KT-19254 Intention to convert object literal to class always creates a class named "O"
• KT-25501 "Replace overloaded operator with function call" changes semantics of increment and decrement operators
• KT-26979 "Lambda argument inside parentheses" inspection is not reported, if function type is actual type argument, but not formal parameter type
• KT-27143 Intention "Replace camel-case name with spaces" is suggested for snake_case names in test functions and renames them incorrectly
• KT-28081 "Convert to lambda" changes expression type for interface with multiple supertypes
• KT-28131 False positive "Redundant lambda arrow" with a functional type argument
• KT-28224 "Add braces to 'else' statement" moves comment outside braces when 'if-else' is inside 'if / when' branch
• KT-28592 False positive "Remove redundant backticks" for underscore variable name
• KT-28596 "Can be replaced with binary operator" shouldn't be suggested when receiver or argument is floating point type
• KT-28641 "Remove useless cast" produces a dangling lambda ("Too many arguments" error)
• KT-28698 "Convert to apply" intention: include function calls with this passed as an argument
• KT-28773 Kotlin/JS: Wrong inspection to replace .equals() with == on dynamic values
• KT-28851 'Convert parameter to receiver' adds Array<out T> wrapper to vararg parameter and drops override modifier in implementations
• KT-28969 TYPE_MISMATCH in array vs non-array case: two quick fixes exist for annotation and none of them adds array literal
• KT-28995 "Add parameter to constructor" quickfix for first enum member changes arguments for all members
• KT-29051 "Add parameter to constructor" quickfix for not-first enum member: "PsiInvalidElementAccessException: Element: class org.jetbrains.kotlin.psi.KtStringTemplateExpression #kotlin because: different providers"
• KT-29052 "Add parameter to constructor" quickfix for not-first enum member inserts FQN type for parameter
• KT-29056 KNPE in ConvertPrimaryConstructorToSecondary with missing property identifier
• KT-29085 False positive "Class member can have 'private' visibility" for a const val used in a public inline function
• KT-29093 False positive inspection "Redundant lambda arrow" with nested lambdas
• KT-29099 "Convert to apply" intention is not available for a single function call
• KT-29128 False positive 'Explicitly given type is redundant here' when typealias is used
• KT-29153 False negative "'rangeTo' or the '..' call should be replaced with 'until'" with bracketed expressions
• KT-29193 Quick fix "Create extension function" List<Int>.set should not be suggested for read-only collections
• KT-29238 Non-canonical modifiers order inspection incorrectly includes annotations into range
• KT-29248 "Convert member to extension" doesn't preserve visibility
• KT-29416 False positive "Redundant property getter" for external getter
• KT-29469 False positive in "Boolean literal argument without parameter name" inspection for varargs parameters
• KT-29549 Make package name convention inspection global
• KT-29567 "Remove empty class body" is a poor name for inspection text
• KT-29606 Do not propose to remove unused parameter of property setter
• KT-29763 False negative "Object literal can be converted to lambda" for block body function with explicit return
• KT-30007 False negative "Add import for '...'" in UserType
• KT-19944 multiplatform: Convert expect/actual function to property should keep the caret on the converted function
• KT-27289 "Create" quick fix on FQN does nothing with KNPE at KotlinRefactoringUtilKt$chooseContainerElement$1.renderText()
• KT-29312 "Make constructor parameter a property" produces wrong modifier order + exception "Invalid range specified"
• KT-29414 "Main parameter is not necessary" inspection reports parameter of main() in object
• KT-29499 "Unsafe call of inline function with nullable extension receiver" inspection ignores inferred nullability
• KT-29927 Missing "Import members from" intention with type check operator in when branch
• KT-30010 Introduce alternative quick-fixes for map[key]!!
• KT-30166 False positive "Redundant companion reference" on companion with the outer class name
• KT-14886 Create Property from Usage should place generated property next to other properties
• KT-16139 Adding explicit type argument leads to type mismatch
• KT-19462 False positive inspection "Redundant lambda arrow" for overloaded functions
• KT-22137 Create class quickfix is not suggested in return statement
• KT-23259 False positive unchecked cast warning/quickfix result in good code turning red
• KT-27641 "Specify type explicitly" suggests too general type even when type hint shows specific generic type
• KT-29124 False positive inspection 'Redundant lambda arrow' with generic function/constructor with lambda argument
• KT-29590 False positive inspection "Redundant lambda arrow" with vararg lambda arguments passed via spread operator
• KT-29977 False positive "Unused import directive" for typealias of an enum imported as static
• KT-30233 Change order of the quick fixes when method does not accept nullable types
• KT-30341 False positive 'Use withIndex() instead of manual index increment' inspection with destructive declaration in 'for' loop
• KT-30414 "Replace return with 'if' expression" drops return label
• KT-30426 Don't preserve extra line when adding remaining branches for when
• KT-30433 "Convert member to extension" doesn't update external Kotlin calls
• KT-30117 Kotlin unused import analysis accesses file editor manager model outside UI thread

IDE. Multiplatform

• KT-29918 Outdated Ktor version in Kotlin (JS Client/JVM Server) multiplatform project generated via New Project Wizard

IDE. Navigation

• KT-26924 Overriding Methods list has more values than it should be in case of inline class
• KT-28661 "Is implemented in" gutter icon shows duplicate function implementations in inline classes
• KT-28838 Group by file structure doesn't work for text search in Kotlin

IDE. Refactorings

• KT-27602 Kotlin property renaming change target name several times during rename making it hard to process it by reference handlers
• KT-29062 Extract Superclass refactoring throws Exception if sourceRoots.size() <= 1
• KT-29796 Label rename refactoring does not work on label usage

IDE. Scratch

• KT-23985 Allow to run Kotlin Worksheet without module classpath
• KT-27955 Interactive mode for Kotlin Scratch files
• KT-28958 Exception "Read access is allowed from event dispatch thread or inside read-action only" when running a scratch file with "Use REPL" and "Make before Run" enabled
• KT-30200 "java.lang.Throwable: Couldn't find expression with start line ..." on edition of a scratch file during its execution with interactive mode enabled

IDE. Script

• KT-29770 IntelliJ IDEA makes too many requests for the classpath of a Gradle Kotlin build script
• KT-29893 IDE is frozen during project configuration because of ScriptTemplatesFromDependenciesProvider
• KT-30146 Preferences from Kotlin scripting section reset to default after project reopening

IDE. Tests Support

• KT-25956 With failed test function class gutter icon is "failure", but function icon is "success"

IDE. Wizards

• KT-17829 Please unify naming of Kotlin projects and frameworks for JVM
• KT-28941 Tip of the day: obsolete project types from "New project wizard"

Libraries

• KT-27108 .toDouble() and .toFloat() conversions for unsigned types
• KT-29520 Random.Default cannot be used asJavaRandom
• KT-30109 Documentation for Result.onSuccess and Result.onFailure are flipped around
• KT-26378 'contains' overloads for unsigned integer ranges with other unsigned integer types
• KT-26410 High-order function overloads for unsigned arrays
• KT-27262 Binary search for specialized arrays of unsigned integers
• KT-28339 Add fill extension function for unsigned primitive arrays
• KT-28397 UByteArray plus UByteArray = List
• KT-28779 Implement method sum() for arrays of unsigned primitives
• KT-29151 Documentation for CharSequence.take() & String.take() shows examples of Iterable.take()
• KT-30035 add max/maxOf/min/minOf for unsigned types
• KT-30051 elementAt extension function of Array/PrimitiveAray/UnsignedArray does not throw IndexOutOfBoundException on incorrect index (JS only)
• KT-30141 JS: document Array.get behavior

Tools. CLI

• KT-26240 Support JVM bytecode targets 9, 10, 11, 12

Tools. Gradle

• KT-12295 Gradle IC: Compile error leads to non-incremental build
• KT-12700 Add a way to diagnose IC problems
• KT-26275 Check new MPP IC
• KT-27885 Drop support for Gradle 3.x and earlier
• KT-27886 Drop support for Android Gradle plugin 2.x
• KT-28552 Gradle 4.7 import fails on Kotlin/mpp projects with Java11
• KT-29275 Drop support for Gradle 4.0
• KT-29758 Gradle build failed with exception on publication of a multiplatform library with Gradle metadata enabled: org.jetbrains.kotlin.gradle.plugin.mpp.HierarchyAttributeContainer cannot be cast to org.gradle.api.internal.attributes.AttributeContainerInternal
• KT-29966 Fix inter-project IC with new MPP for JS/JVM targets
• KT-27059 Ensure a dependency on the multiplatform project in the POM when publishing a single-platform module with the maven plugin
• KT-29971 ConcurrentModificationException in Kotlin Gradle plugin (GradleCompilerRunner.buildModulesInfo)
• KT-21030 Automatically detect java 1.8 sources in kotlin-android gradle plugin
• KT-27675 Enable Kapt build cache by default
• KT-27714 Kotlin MPP Android targets don't have their attributes copied to the configurations of the compilations
• KT-29761 Inter-project IC does not work for kaptGenerateStubs* tasks on Android
• KT-29823 Update 'org.gradle.usage' attribute rules to support the 'JAVA_API_JARS' value
• KT-29964 A universal Gradle DSL way of configuring all compilations of all targets doesn't work for Android target of a multiplatform project
• KT-30276 Warn if the Kotlin Gradle plugin is loaded multiple times
• KT-30322 Memory leak in CompilationSourceSetUtil
• KT-30492 Classes not removed for out/in process compilation

Tools. J2K

• KT-29713 java.lang.IllegalStateException at converting @RestController java file to Kotlin file

Tools. JPS

• KT-30137 Deadlock during concurrent classloading

Tools. Maven

• KT-29251 NSME: MavenProjectsManager.scheduleArtifactsDownloading() at KotlinMavenImporter.scheduleDownloadStdlibSources()

Tools. REPL

• KT-19276 Console spam when opening idea-community project in debug IDEA

Tools. Scripts

• KT-29296 Script evaluation - impossible to set base classloader to null
• KT-27051 Support dynamic versions in @file:DependsOn
• KT-27815 Compiler options in the scripting compilation configuration are ignored on compilation/evaluation
• KT-28593 Idea tries to associate file type with the script definition discovery file
• KT-29319 scripts default jvmTarget causes inlining problems - default should be 1.8
• KT-29741 KJvmCompiledScript can not be deserialized KJvmCompiledModule if it's null
• KT-30210 Coroutines in main.kts crash with NoSuchMethodError because kotlin-main-kts.jar has embedded coroutines

Tools. kapt

• KT-26977 kapt plugin applied in platform.jvm module preventing visibility of common code
• KT-27506 Kapt error "no interface expected here" in class implementing interface with secondary constructor
• KT-28220 kapt can generate invalid stub files for imports of enum constants
• KT-28306 Cannot extend an generic interface with function body while using kapt and correctErrorTypes in Kotlin 1.3
• KT-23880 Kapt: Support incremental annotation processors
• KT-29302 Java classes doesn't resolve Kotlin classes when kapt.use.worker.api = true
• KT-30163 Kapt: Javadoc in Java source model mangled (leading asterisks are preserved)

1.3.30

Compiler

New Features

• KT-19664 Allow more permissive visibility for non-virtual actual declarations
• KT-29586 Add support for Android platform annotations
• KT-29604 Do not implicitly propagate deprecations originated in Java

Performance Improvements

• KT-24876 Emit calls to java.lang.Long.divideUnsigned for unsigned types when target version is 1.8
• KT-25974 'when' by unsigned integers is not translated to tableswitch/lookupswitch
• KT-28015 Coroutine state-machine shall use Result.throwOnFailure
• KT-29229 Intrinsify 'in' operator for unsigned integer ranges
• KT-29230 Specialize 'next' method call for unsigned integer range and progression iterators

Fixes

• KT-7185 Parse import directives in the middle of the file, report a diagnostic instead
• KT-7237 Parser recovery (angle bracket mismatch)
• KT-11656 Could not generate LightClass because of ISE from bridge generation on invalid code
• KT-13497 Better recovery in comma-separated lists in case of missing comma
• KT-13703 Restore parser better when class is missing from enum declaration
• KT-13731 Recover parser on value parameter without a type
• KT-14227 Incorrect code is generated when using MutableMap.set with plusAssign operator
• KT-19389 Couldn't inline method call 'with'
• KT-20065 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with generic typealias
• KT-20322 Debug: member value returned from suspending function is not updated immediately
• KT-20780 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with parameterized inner type alias
• KT-21405 Throwable “Rewrite at slice LEXICAL_SCOPE key: VALUE_PARAMETER_LIST” on editing string literal in kotlin-js module
• KT-21775 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with typealias used from a different module
• KT-22818 "UnsupportedOperationException: Don't know how to generate outer expression" on using non-trivial expression in default argument of expect function
• KT-23117 Local delegate + local object = NoSuchMethodError
• KT-23701 Report error when -Xmultifile-parts-inherit is used and relevant JvmMultifileClass parts have any state
• KT-23992 Target prefixes for annotations on supertype list elements are not checked
• KT-24490 Wrong type is inferred when last expression in lambda has functional type
• KT-24871 Optimize iteration and contains for UIntRange/ULongRange
• KT-24964 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with Validated typealias from Arrow
• KT-25383 Named function as last statement in lambda doesn't coerce to Unit
• KT-25431 Type mismatch when trying to bind mutable property with complex common system
• KT-25435 Try/catch as the last expression of lambda cause type mismatch
• KT-25437 Type variable fixation of postponed arguments and type variables with Nothing constraint
• KT-25446 Empty labeled return doesn't force coercion to Unit
• KT-26069 NoSuchMethodError on calling remove/getOrDefault on a Kotlin subclass of Java subclass of Map
• KT-26638 Check for repeatablilty of annotations doesn't take into account annotations with use-site target
• KT-26816 Lambdas to Nothing is inferred if multilevel collections is used (listOf, mapOf, etc)
• KT-27190 State machine elimination after inlining stopped working (regression)
• KT-27241 Contracts: smartcasts don't work correctly if type checking for contract function is used
• KT-27565 Lack of fallback resolution for SAM conversions for Kotlin functions in new inference
• KT-27799 Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects
• KT-28182 Kotlin Bytecode tool window shows incorrect output on annotated property with backing field
• KT-28236 "Cannot serialize error type: [ERROR : Unknown type parameter 2]" with inferred type arguments in generic extension function from Arrow
• KT-28309 Do not generate LVT entries with different types pointing to the same slot, but have different types
• KT-28317 Strange behavior in testJvmAssertInlineFunctionAssertionsEnabled on Jdk 6 and exception on JDK 8
• KT-28453 Mark anonymous classes for callable references as synthetic
• KT-28598 Type is inferred incorrectly to Any on a deep generic type with out projection
• KT-28654 No report about type mismatch inside a lambda in generic functions with a type parameter as a return type
• KT-28670 Not null smartcasts on an intersection of nullable types don't work
• KT-28718 progressive mode plus new inference result in different floating-point number comparisons
• KT-28810 Suspend function's continuation parameter is missing from LVT
• KT-28855 NoSuchMethodError with vararg of unsigned Int in generic class constructor
• KT-28984 Exception when subtype of kotlin.Function is used as an expected one for lambda or callable reference
• KT-28993 Incorrect behavior when two lambdas are passed outside a parenthesized argument list
• KT-29144 Interface with companion object generates invalid bytecode in progressive mode
• KT-29228 Intrinsify 'for' loop for unsigned integer ranges and progressions
• KT-29324 Warnings indexing jdk 11 classes
• KT-29367 New inference doesn't wrap annotated type from java to TypeWithEnhancement
• KT-29507 @field-targeted annotation on property with both getter and setter is absent from bytecode
• KT-29705 'Rewrite at slice CONSTRUCTOR` of JS class while editing another JVM-class
• KT-29792 UnsupportedOperationException: Unsupported annotation argument type when using Java annotation with infinity or NaN as a default value
• KT-29891 Kotlin doesn't allow to use local class literals as annotation arguments
• KT-29912 Crossinline nonsuspend lambda leads to KNPE during inlining
• KT-29965 Don't generate annotation on $default method
• KT-30030 Extensive 'Rewrite at slice'-exception with contracts in JS module of multiplatform project
• KT-22043 Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4
• KT-26150 KotlinFrontendException is thrown when callsInPlace called twice with different InvocationKind in functions with contracts
• KT-26153 Contract is allowed when it's at the beginning in control flow terms, but not in tokens order terms (contract doesn't work)
• KT-26191 Contract may not be the first statement if it's part of the expression
• KT-29178 Prohibit arrays of reified type parameters in annotation arguments in local classes / anonymous objects

IDE

New Features

• KT-26950 Support Multiline TODO comments
• KT-29034 Make JvmDeclarationSearch find private fields in kotlin classes

Performance Improvements

• KT-29457 FindImplicitNothingAction#update freezes UI for 30 secs
• KT-29551 CreateKotlinSdkActivity runs on UI thread

Fixes

• KT-11143 Do not insert closing brace for string template between open brace and identifier
• KT-18503 Optimize imports produces red code
• KT-27283 KotlinULiteralExpression and PsiLanguageInjectionHost mismatch
• KT-27794 KotlinAnnotatedElementsSearcher doesn't process method parameters
• KT-28272 UAST: Need to be able to identify SAM conversions
• KT-28360 Getting tons of "There are 2 classes with same fqName" logs in IntelliJ
• KT-28739 Bad caret position after Insert curly braces around variable inspection
• KT-29013 Injection with interpolation loses suffix
• KT-29025 Implement UReferenceExpression.referenceNameElement for Kotlin
• KT-29287 Exception in ultra-light classes on method annotated with @throws
• KT-29381 Highlight return lambda expressions when cursor is one the call with lambda argument
• KT-29434 Can not detect injection host in string passed as argument into arrayOf() function
• KT-29464 Project reopening does not create missing Kotlin SDK for Native modules (like it does for other non-JVM ones)
• KT-29467 Maven/Gradle re-import does not add missing Kotlin SDK for kotlin2js modules (non-MPP JavaScript)
• KT-29804 Probable error in the "Kotlin (Mobile Android/iOS)" new project template in IntelliJ
• KT-30033 UAST: Delegation expression missing from parse tree

IDE. Android

• KT-29847 Many IDEA plugins are not loaded in presence of Kotlin plugin: "Plugins should not have cyclic dependencies"

IDE. Code Style, Formatting

• KT-23295 One-line comment indentation in functions with expression body
• KT-28905 When is "... if long" hitting?
• KT-29304 Settings / Code Style / Kotlin mentions "methods" instead of functions

IDE. Completion

• KT-18663 Support "smart enter/complete statement" completion for method calls
• KT-28394 Improve code completion for top level class/interface to incorporate filename
• KT-29435 org.jetbrains.kotlin.types.TypeUtils.contains hanging forever and freezing IntelliJ
• KT-27915 Stop auto-completing braces for companion objects