Compiler

• KT-31411 Support mode of compiler where it analyses source-set as platform one, but produces only metadata for that specific source-set
• KT-32372 Type inference errors in IDE
• KT-33542 Compilation failed with "AssertionError: Suspend functions may be called either as suspension points or from another suspend function"
• KT-33544 "UnsupportedOperationException: no descriptor for type constructor of TypeVariable(R)?" with BuilderInference and elvis operator
• KT-36297 NI: ClassNotFoundException: compiler emits reference to nonexisting class for code with nested inline lambdas
• KT-36719 Enable new inference in IDE since 1.3.70

IDE

• KT-33820 Stop using com.intellij.codeInsight.AnnotationUtil#isJetbrainsAnnotation
• KT-33846 Stop using com.intellij.openapi.vfs.newvfs.BulkFileListener.Adapter

IDE. Completion

• KT-36306 Code completion inlines content of FQN class if completion called in string

IDE. Debugger

• KT-16277 Can't set breakpoint for object construction

IDE. Inspections and Intentions

• KT-33771 False positive "Redundant Companion reference" with Java synthetic property and same-named object property
• KT-36307 False positive "Remove redundant '.let' call" for nested lambda change scope reference

IDE. Multiplatform

• KT-33321 In IDE, actuals of intermediate test source set are incorrectly matched against parent main source-set (not test one)

IDE. Refactorings

• KT-24122 Long pauses with "removing redundant imports" dialog on rename refactoring for IDEA Kotlin Plugin
• KT-32514 Moving file in with 'search for references' inlines contents in referred source code
• KT-32999 Renaming parameter does not rename usage in named argument in a different file
• KT-33372 Rename resource cause its content to be replaced
• KT-34415 Refactor > Change signature of an overridden actual function from a platform class: "org.jetbrains.kotlin.descriptors.InvalidModuleException: Accessing invalid module descriptor"
• KT-34419 Refactor > Change signature > add a function parameter: "org.jetbrains.kotlin.descriptors.InvalidModuleException: Accessing invalid module descriptor"
• KT-35689 Change Signature: "InvalidModuleException: Accessing invalid module descriptor" on attempt to change receiver type of a member abstract function
• KT-35903 Change Signature refactoring crashes by InvalidModuleException on simplest examples

IDE. Run Configurations

• KT-35038 Running a test in a multi-module MPP project via IntelliJ Idea gutter action produces incorrect Gradle Run configuration

Libraries

• KT-7657 scan functions for Sequences and Iterable
• KT-33761 reduceOrNull: reduce that doesn't throw on empty input

Tools. Gradle. JS

• KT-36714 [Gradle, JS] Webpack output doesn't consider Kotlin/JS exports (library mode)

Tools. Gradle. Multiplatform

• KT-36469 Dependencies with compileOnly scope are not visible in Gradle build of MPP with source set hierarchies support

Compiler

• KT-31242 "Can't find enclosing method" ProGuard compilation exception with inline and crossinline
• KT-31923 Outer finally block inserted before return instruction is not excluded from catch interval of inner try (without finally) block
• KT-32435 New inference preserves platform types while old inference can substitute them with the nullable result type
• KT-34060 UNUSED_PARAMETER is not reported on unused parameters of non-operator getValue/setValue/prodiveDelegate functions
• KT-34395 KtWhenConditionInRange.isNegated() doesn't work
• KT-34648 Support custom messages for @RequiresOptIn-marked annotations
• KT-34888 Kotlin REPL ignores compilation errors in class declaration
• KT-35035 Incorrect state-machine generated for suspend lambda inside inline lambda
• KT-35262 Suspend function with Unit return type returns non-unit value if it is derived from function with non-unit return type
• KT-35843 Emit type annotations in JVM bytecode with target 1.8+ on basic constructions

IDE

• KT-24399 No scrollbar in Kotlin compiler settings
• KT-33939 Copy action leads to freezes
• KT-35673 ClassCastException on destructuring declaration with annotation
• KT-36008 IDEA 2020.1: Fix NSME "com.intellij.openapi.progress.util.ProgressIndicatorUtils.awaitWithCheckCanceled(Future)"

IDE. Completion

• KT-23026 Code completion: Incorrect const in class declaration line
• KT-23834 Code completion and auto import do not suggest an extension that differs from member only in type parameters
• KT-29840 'const' is suggested inside the class body, despite it's illegal

IDE. Gradle

• KT-35442 KotlinMPPGradleModelBuilder shows warnings on import because it can't find a not existing directory

IDE. Gradle. Script

• KT-34795 Gradle Kotlin DSL new project template: don't use setUrl syntax in settings.gradle.kts pluginManagement block
• KT-35268 .gradle.kts: don't load script's configurations that are not connected to any Gradle project
• KT-35563 Track script modifications between IDE restarts

IDE. Inspections and Intentions

• KT-35242 Text-range based inspection range shifts wrongly due to incremental analysis of whitespace and comments
• KT-35837 Editing Introduce import alias does not affect KDoc
• KT-36018 'Missing visibility' and 'missing explicit return type' compiler and IDE diagnostics for explicit API mode
• KT-36020 Intention 'Add public modifier' is not available for highlighted declaration in explicit API mode
• KT-36021 KDoc shouldn't be highlighted on 'visibility must be specified' warning in explicit API mode

IDE. Navigation

• KT-35310 PIEAE: "During querying provider Icon preview" at ClsJavaCodeReferenceElementImpl.multiResolve() on navigation to Kotlin declaration

IDE. Run Configurations

• KT-34503 "Nothing here" is shown as a drop-down list for "Run test" gutter icon for a multiplatform test with expect/actual parts in platform-agnostic code
• KT-35480 "Nothing here" is shown as a drop-down list for "Run test" gutter icon for a multiplatform test with object in JS and Native code

IDE. Script

• KT-35886 UI Freeze: ScriptClassRootsCache.hasNotCachedRoots 25 seconds

IDE. Wizards

New Features

• KT-36043 Gradle, JS: Add continuous-mode run configuration in New Project Wizard templates

New Project Wizard

• KT-35584 Module names restrictions are too strong with no reason
• KT-35690 Artifact and group fields are mixed up
• KT-35694 settings.gradle.kts are created even for Groovy DSL
• KT-35695 kotlin () call used for dependencies in non-MPP Groovy-DSL JVM project
• KT-35710 Non-Java source/resource roots are created for Kotlin/JVM JPS
• KT-35712 Source root templates: switching focus from root reverts custom settings to default
• KT-35713 Custom settings for project name, artifact and group ID are reverted to default on Previous/Next
• KT-35711 Maven: "Kotlin Test framework" template adds wrong dependency
• KT-35715 Maven: custom repository required for template (ktor) is not added to pom.xml
• KT-35718 Gradle: ktor: not existing repository is added
• KT-35719 Multiplatform library: entryPoint specifies not existing class name
• KT-35720 Multiplatform library: Groovy DSL: improve the script for nativeTarget calculation

Libraries

• KT-15363 Builder functions for basic containers
• KT-21327 Add Deque & ArrayDeque to Kotlin standard library
• KT-33141 UnderMigration annotation is defined in Kotlin, but supposed to be used from Java
• KT-35347 Create method Collection.randomOrNull()
• KT-36118 Provide API for subtyping relationship between CoroutineContextKey and elements associated with this key

Tools. Gradle

• KT-25206 Delegate build/run to gradle results regularly in cannot delete proto.tab.value.s

Tools. Gradle. JS

• KT-31894 browserRun makes the build fail if no Kotlin sources are present
• KT-35599 Actualize Node and Yarn versions in 1.3.70

Tools. Gradle. Multiplatform

• KT-31570 Deprecate Kotlin 1.2.x MPP Gradle plugins

Tools. Gradle. Native

• KT-29395 Allow setting custom destination directory for Kotlin/Native binaries
• KT-31542 Allow changing the name of a framework created by CocoaPods Gradle plugin
• KT-32750 Support subspecs in CocoaPods plugin
• KT-35352 Support exporting K/N dependencies to shared and static libraries
• KT-35934 Spaces are not escaped in K/N compiler parameters
• KT-35958 Compiling test sources with no sources in main roots halts the Gradle daemon

Tools. J2K

• KT-18001 Multi-line comments parsed inside Kdoc comments
• KT-33637 Property with getter is converted into incompailable code if backing field was not generated
• KT-35081 Invalid code with block comment (Javadoc)
• KT-35395 UninitializedPropertyAccessException through org.jetbrains.kotlin.nj2k.conversions.ImplicitCastsConversion when anonymous inner class passes itself as argument to outer method
• KT-35431 "Invalid PSI class com.intellij.psi.PsiLambdaParameterType" with lambda argument in erroneous code
• KT-35476 Expression with compound assignment logical operator is changing operator precedence without parentheses
• KT-35478 Single line comment before constructor results in wrong code
• KT-35739 Line break is not inserted for private property getter
• KT-35831 Error on inserting plain text with \r char

Tools. Scripts

• KT-34716 Implement default cache in main-kts

Tools. kapt

• KT-34569 Kapt doesn't handle methods with both the @override annotation and override keyword
• KT-35181 Make Kapt Gradle tasks compatible with instant execution

Compiler

New Features

• KT-7745 Support named arguments in their own position even if the result appears as mixed
• KT-34847 Lift restrictions from kotlin.Result

Performance Improvements

• KT-14513 Suboptimal compilation of lazy delegated properties with inline getValue

Fixes

• KT-19234 Improve "Supertypes of the following classes cannot be resolved" diagnostic
• KT-21178 Prohibit access of protected members inside public inline members
• KT-24461 Expect interface with suspend function with default arguments causes runtime error
• KT-25514 Support usage of function reference with vararg where function of array is expected in new inference
• KT-26435 Bad frame merge after inline
• KT-27825 Gradually prohibit non-abstract classes containing abstract members invisible from that classes (internal/package-private)
• KT-27999 Generic type is fixed too early for lambda arguments
• KT-28940 Concurrency issue for lazy values with the post-computation phase
• KT-29242 Conditional with generic type Nothing inside inline function throws java.lang.VerifyError: Bad return type
• KT-30244 Unable to infer common return type for two postponed arguments
• KT-30245 Wrong type is inferred for lambda if it has expected type with an extension receiver
• KT-30277 Relax the "no reflection found in class path" warning for KType and related API
• KT-30744 Invoking Interface Static Method from Extension method generates incorrect jvm bytecode
• KT-30953 Missing unresolved if callable reference is used in the place in which common super type is computing
• KT-31227 Prohibit using array based on non-reified type parameters as reified type arguments on JVM
• KT-31653 Incorrect transformation of the try-catch cover when inlining
• KT-31975 No diagnostic on error type
• KT-32106 New type inference algorithm: IDE shows error but the code compiles succesfully
• KT-32138 New type inference: invoking type-aliased extension function red in IDE, but compiles
• KT-32168 Problem in IDE with new type inference and delegate provider
• KT-32243 New type inference fails
• KT-32345 New type inference error when using helper method to create delegate provider
• KT-32415 Type mismatch on argument of super constructor of inner class call
• KT-32423 NI: IllegalStateException: Error type encountered: org.jetbrains.kotlin.types.ErrorUtils$UninferredParameterTypeConstructor@211a538e (ErrorType)
• KT-32456 NI: "IllegalStateException: Error type encountered" when adding emptyList to mutableList
• KT-32499 Kotlin/JS - new type inference with toTypedArray() failure
• KT-32742 Gradle/JS "Unresolved Reference" when accessing setting field of Dynamic object w/ React
• KT-32818 Type inference failed with elvis operator
• KT-32862 NI: Compilation error "IllegalArgumentException: ClassicTypeSystemContextForCS couldn't handle" with overloaded generic extension function reference passed as parameter
• KT-33033 NI: Nothing incorrectly inferred as return type when null passed to generic function with expression if statement body
• KT-33197 Expression with branch resolving to List<…> ultimately resolves to MutableList<…>
• KT-33263 "IllegalStateException: Type variable TypeVariable(T) should not be fixed!" with generic extension function and in variance
• KT-33592 NI: Missed error in IDE — Unsupported [Collection literals outside of annotations]
• KT-33932 Compiler fails when it encounters inaccessible classes in javac integration mode
• KT-34029 StackOverflowError for access to nested object inheriting from containing generic class at org.jetbrains.kotlin.descriptors.impl.LazySubstitutingClassDescriptor.getTypeConstructor
• KT-34282 Missing diagnostic of unresolved for callable references with overload resolution ambiguity
• KT-34391 IDE, NI: False negative EXPERIMENTAL_API_USAGE_ERROR with callable reference
• KT-34500 CompilationException when loop range is DoubleArray and loop parameter is casted to super-type (e.g. Any, Number, etc.)
• KT-34647 Gradually rename experimentality annotations
• KT-34649 Deprecate -Xexperimental flag
• KT-34743 Support trailing comma in the compiler
• KT-34786 Flaky type inference for lambda expressions
• KT-34820 NI: Red code when expanding type-aliased extension function in LHS position of elvis
• KT-35101 "AssertionError: Mapping ranges should be presented in inline lambda" with a callable reference argument to inline lambda
• KT-35168 NI: "UninitializedPropertyAccessException: lateinit property subResolvedAtoms has not been initialized"
• KT-35172 NI: False positive type mismatch if nullable type after elvis and safe call inside lambda is returning (expected type is specified explicitly)
• KT-35224 NI: Java call candidate with varargs as Array isn't present if SAM type was used in this call
• KT-35426 IncompatibleClassChangeError: Method 'int java.lang.Object.hashCode()' must be Methodref constant when invoking on super with explicit generic type

Docs & Examples

• KT-31118 Provide missing documentation for StringBuilder members

IDE

New Features

• KT-27496 Color Scheme: allow changing style for suspend function calls
• KT-30806 Add IntelliJ Color Scheme rules for property declarations
• KT-34303 IDE should suggest to import an extension iterator function when using for loop with a range
• KT-34567 Feature: Auto add val keyword on typing data/inline class ctor parameters
• KT-34667 Add auto-import quickfix for overloaded generic function

Performance Improvements

• KT-30726 Editor is laggy if the code below a current line has unresolved reference
• KT-30863 IDE freeze on editing with "Add unambiguous imports on the fly" turned on
• KT-32868 Provide incremental analysis of file when it is applicable
• KT-33250 KtLightClassForSourceDeclaration.isFinal() can be very slow (with implications for class inheritor search)
• KT-33905 Optimize imports under reasonable progress
• KT-34956 UI Freeze: PlainTextPasteImportResolver
• KT-35121 Add support for KtSecondaryConstructors into incremental analysis
• KT-35189 Support incremental analysis of comment and kdoc
• KT-35590 UI freeze in kotlin.idea.core.script.ScriptConfigurationMemoryCache when editing file

Fixes

• KT-10478 Move-statement doesn't work for methods with single-expression body and lambda as returning type
• KT-13344 Reduce visual distraction of val keyword
• KT-14758 Move statement up shouldn't move top level declarations above package and import directives
• KT-23305 We should be able to see platform-specific errors in common module
• KT-27806 UAST: @deprecated(level=DeprecationLevel.HIDDEN) makes method disappear
• KT-28708 Java IDE fails to understand @JvmDefault on properties from binaries
• KT-30489 Kotlin functions are represented in UAST as UAnnotationMethods
• KT-31037 Lambda expression default parameter 'it' sometimes is not highlighted in a call chain
• KT-31365 IDE does not resolve references to stdlib symbols in certain packages (kotlin.jvm) when using OSGi bundle
• KT-32031 UAST: Method body missing for suspend functions
• KT-32540 UltraLight support for compiler plugins
• KT-33888 Bad indentation when copy-paste to trimIndent()
• KT-34081 Kotlin constants used in Java annotation attributes trigger "Attribute value must be constant" error
• KT-34316 UAST: reified methods no longer visible in UAST
• KT-34337 Descriptors Leak in UltraLightClasses
• KT-34379 "Implement members" with unspecified type argument: "AssertionError: 2 declarations in override fun"
• KT-34785 Enter handler: do not add 'trimIndent()' in const
• KT-34914 Analysis sometimes isn't rerun until an out of code block change
• KT-35222 SQL language is not injected to String array attribute of Java annotation
• KT-35266 Kotlin-specific setting "Optimize imports on the fly" is useless
• KT-35454 Weird implementation of KtUltraLightFieldImpl.isEquivalentTo

IDE. Code Style, Formatting

New Features

• KT-35088 Insert empty line between a declaration and declaration with comment
• KT-35106 Insert an empty line between a declaration and declaration with annotation

Fixes

• KT-4194 Code formatter should not move the end of line comment after if condition to the next line
• KT-12490 Formatter inserts empty line between single-line declarations in the presence of a comment
• KT-22273 Labeled statements are formatted incorrectly
• KT-22362 Formatter breaks up infix function used in elvis operator
• KT-23811 Formatter: Constructor parameters are joined with the previous line if prefixed with an annotation
• KT-23929 Formatter: chained method calls: "Chop down if long" setting is ignored
• KT-23957 Formatter tears comments away from file annotations
• KT-30393 Remove unnecessary whitespaces between property accessor and its parameter list in formatter
• KT-31881 Redundant indent for single-line comments inside lambda
• KT-32277 Space before by delegate keyword on a property is not formatted
• KT-32324 Formatter doesn't insert space after safe cast operator as?
• KT-33553 Formater does not wrap function chained expression body despite "chained function calls" settings
• KT-34049 Formatter breaks string inside template expression with elvis operator
• KT-35093 Formatter inserts empty line between single-line declarations in the presence of an annotation
• KT-35199 Wrong formatting for lambdas in chain calls

IDE. Completion

Fixes

• KT-15286 Support import auto-completion for extension functions declared in objects
• KT-25732 "null" keyword should have priority in completion sort
• KT-29926 Suggest lambda parameter names in IDE to improve DSL adoption
• KT-31762 Completion: Parameter name is suggested instead of enum entry in entry constructor
• KT-32615 PIEAE for smart completion of anonymous function with importing name inside of function
• KT-33979 No completion for functions from nested objects
• KT-34150 No completion for object methods that override something
• KT-34386 Typo in Kotlin arg postfix completion
• KT-34414 Completion works differently for suspend and regular lambda functions
• KT-34644 Code completion list sorting: do not put method before "return" keyword
• KT-35042 Selecting completion variant works differently for suspend and regular lambda parameter

IDE. Debugger

• KT-12242 Debugger: breakpoint in a class is not hit if the class was first accessed in Evaluate Expression
• KT-20342 Step Over jumps to the wrong position (KotlinUFile)
• KT-30909 "Kotlin variables" button looks inconsistent with panel style
• KT-32704 ISE "Descriptor can be left only if it is last "on calling function with expression body inside Evaluate Expression window
• KT-32736 Evaluate Expression on statement makes error or shows nothing
• KT-32741 "Anonymous functions with names are prohibited "on evaluating functions in Expression mode
• KT-33303 "Smart step into" doesn't work for library declarations
• KT-33304 Can't put a breakpoint to the first line in a file
• KT-33728 Smart Step Into doesn't work for @InlineOnly functions
• KT-35316 IndexNotReadyException on function breakpoint

IDE. Folding

• KT-6316 Folding of multiline functions which don't have curly braces (expression-body functions)

IDE. Gradle. Script

• KT-31976 Adding a space in build.gradle.kts leads to 'Gradle projects need to be imported' notification
• KT-34441 *.gradle.kts: load all scripts configuration at project import
• KT-34442 *.gradle.kts: avoid just-in-case script configuration request to Gradle
• KT-34530 Equal duplicate script definitions are listed three times in Preferences
• KT-34740 Implement completion for implicit receivers in scripts with new scripting API
• KT-35096 Duplicated “Kotlin Script” definition for Gradle/Kotlin projects
• KT-35149 build.graldle.kts settings importing: configuration for buildSrc/prepare-deps/build.gradle.kts not loaded
• KT-35205 *.gradle.kts: avoid just-in-case script configuration request to Gradle while loading from FS

IDE. Hints. Parameter Info

• KT-34992 UI Freeze: Show parameter info leads to freezes

IDE. Inspections and Intentions

New Features

• KT-8478 Make 'Add parameter to function' quick fix work to parameters other than last
• KT-12073 Report IDE inspection warning on pointless unary operators on numbers
• KT-18536 Provide proper quick fix for accidental override error
• KT-34218 Merge 'else if' intention

Fixes

• KT-17659 Cannot access internal Kotlin declaration from Java test code within the same module
• KT-25271 "Remove redundant '.let' call" may introduce expression side effects several times
• KT-29737 "Make internal/private/protected" intention works for either expect or actual side
• KT-31967 Typo in inspection name: "'+=' create new list under the hood"
• KT-32582 Ambiguous message for [AMBIGUOUS_ACTUALS] error (master)
• KT-33109 "Add constructor parameters" quick fix should add default parameters from super class
• KT-33123 False positive "Redundant qualifier name" with inner class as constructor parameter for outer
• KT-33297 Improve parameter name in Add parameter to constructor quick fix
• KT-33526 False positive "Redundant qualifier name" with enum constant initialized with companion object field
• KT-33580 False positive "Redundant visibility modifier" overriding property with protected set visibility
• KT-33796 INVISIBLE_SETTER: quick fix "Make '' public" does not remove redundant setter
• KT-33902 False positive for "Remove explicit type specification" with type alias as return type
• KT-33933 "Create expect" quick fix generates the declaration in a default source set even if an alternative is chosen
• KT-34078 ReplaceWith does not work if replacement is fun in companion object
• KT-34203 "Add constructor parameter" fix does not add generics
• KT-34297 "Add 'replaceWith' argument" inserts positional instead of named argument
• KT-34325 "Control flow with empty body" inspection should not report ifs with comments
• KT-34411 Create expect/actual quick fix: focus is lost in the editor (193 IDEA)
• KT-34432 Replace with safe call intention inserts redundant elvis operator
• KT-34603 "Remove redundant '.let' call" false negative for reference expression
• KT-34694 "Terminate preceding call with semicolon" breaks lambda formatting
• KT-34784 "Indent raw string" intention: do not suggest in const
• KT-34894 Action "Add not-null asserted (!!) call" doesn't fix error for properties with omitted this
• KT-35022 Quickfix "change to var" doesn't remove const modifier
• KT-35208 NPE from PerModulePackageCacheService
• KT-35288 False positive "Remove braces from 'when' entry" in 'when' expression which returns lambda

IDE. Navigation

• KT-30736 References for import alias from kotlin library not found using ReferencesSearch.search

IDE. Refactorings

• KT-18191 Refactor / Copy multiple files/classes: package statements are not updated
• KT-18539 Default implement fun/property text shouldn't contain scary comment
• KT-28607 Extract/Introduce variable fails if caret is just after expression
• KT-32601 Introduce variable in unformatted lambda causes PIEAE
• KT-34459 Change method signature with unresolved lambda type leads to error
• KT-34971 Refactor / Copy for declarations from different sources throws IAE: "unexpected element" at CopyFilesOrDirectoriesHandler.getCommonParentDirectory()

IDE. Run Configurations

• KT-34632 Kotlin/JS: Can not run single test method

IDE. Script

• KT-34688 Many "scanning dependencies for script definitions progresses at the same time

IDE. Tests Support

• KT-33787 IDE tests: Not able to run a single test using JUnit

JS. Tools

• KT-35198 Kotlin/JS: with references to NPM/.kjsm library DCE produces invalid resulting JavaScript

JavaScript

• KT-30517 KJS generates the wrong call for secondary constructor w/ default argument when class inherited by the object expression
• KT-33149 JS: lambda is not a subtype of Function<*>
• KT-33327 JS IR backend works incorrectly when function and property have the same name
• KT-33334 JS IR backend can't access private var from internal inline function

Libraries

• KT-17544 JS: document array destructuring behavior
• KT-33069 StringBuilder common functions
• KT-33447 runCatching docs suggests it catches exceptions but it catches throwables
• KT-35175 Clarify documentation for XorWowRandom
• KT-35299 Float.rangeTo(Float): ClosedFloatingPointRange doesn't exist in the common stdlib.

Reflection

• KT-14720 Move KClass.cast / KClass.isInstance into kotlin-stdlib
• KT-33646 Make KClass.simpleName available on JVM without kotlin-reflect.jar
• KT-34586 Make KClass.qualifiedName available on JVM without kotlin-reflect.jar

Tools. CLI

• KT-29933 Support relative paths in -Xfriend-paths
• KT-34119 Add JVM target bytecode version 13
• KT-34240 CLI kotlinc help -include-runtime has redundant space

Tools. Gradle. JS

New Features

• KT-30659 Run NodeJS debugger when running debug gradle task from IDEA
• KT-32129 Gradle, JS, Karma: debug
• KT-32179 Gradle, JS, DSL: allow npm in root dependencies section of single platform projects
• KT-32283 Configure webpack mode
• KT-32323 Gradle, JS, webpack: support optimized webpack bundle
• KT-32785 Gradle/JS + Webpack: Asset bundling in distributions folder

Fixes

• KT-30917 Gradle, Tests: Inner classes mapped incorrectly in short test fail message
• KT-34946 [Kotlin/JS] DCE require some/all transitive dependencies. Invalid compilation result otherwise
• KT-35318 KJS: IllegalStateException on clean build with left-pad package and generateKotlinExternals=true
• KT-35428 [Gradle, JS] Gradle dependency with invalid package.json
• KT-35598 [Gradle, JS] Actualize NPM dependencies in 1.3.70

Tools. Gradle. Multiplatform

• KT-35126 Support Gradle instant execution for Kotlin/JVM and Android tasks

Tools. J2K

• KT-16774 UI Freeze: J2K, PlainTextPasteImportResolve: IDEA freezes for 10+ seconds when copy-pasting Java code from an external source to Kotlin file
• KT-19574 Code with inferred default parameters and parameter vs property name clashes
• KT-21811 Convert string concatenation into a multiline string
• KT-32551 New J2K: Non-canonical modifiers order inspection is not applied during conversion of a super inner class
• KT-34673 J2K: first comment in function (if, for, while) block is moved to declaration line of the block
• KT-35152 J2K breaks formatting by moving subsequent single-line comments to the first column

Tools. Scripts

• KT-34274 Add support for @CompilerOptions annotation in kotlin-main-kts
• KT-34893 Update apache ivy version in kotlin-main-kts
• KT-35413 Implement "evaluate expression" command line parameter and functionality in the JVM cli compiler
• KT-35415 Implement script and expression evaluation in the kotlin runner
• KT-35416 load main-kts script definition by default in the jvm compiler, if the jar is available

Tools. kapt

• KT-30164 Default field value not transmitted to Java source model for mutable properties
• KT-30368 Deprecated information not transmitted to Java source model
• KT-32832 Kapt: Turn worker API on by default
• KT-33617 KAPT, Java 9+: "IllegalStateException: Should not be called!"
• KT-34167 Kapt: Annotation Processor incorrectly marked as isolating causes full rebuild silently.
• KT-34258 kapt.incremental.apt=true makes build failed after moving annotation processor files

1.3.61

Compiler

• KT-35004 "AssertionError: Unsigned type expected" in when range check in extension on unsigned type

IDE

• KT-34923 [Regression] KtUltraLightMethod.hasModifierProperty("native") returns false for external Kotlin functions

Libraries

• KT-21445 W3C DOM Touch events and interfaces are incomplete / missing

Tools. Compiler Plugins

• KT-34991 kotlinx.serialization: False warning "Explicit @serializable annotation on enum class is required when @SerialName or @SerialInfo annotations are used on its members"

Tools. J2K

• KT-34987 New J2K converter: @NotNull annotations are not removed after converting java code to kotlin
• KT-35074 J2K: No auto conversion in 'for' loop with multiple init variables

CHANGELOG

1.3.60 EAP 3

Compiler

• KT-18541 Prohibit "tailrec" modifier on open functions
• KT-19844 Do not render type annotations on symbols rendered in diagnostic messages
• KT-24913 KotlinFrontEndException with local class in init of generic class
• KT-31540 Change initialization order of default values for tail recursive optimized functions

IDE

• KT-21153 IDE: string template + annotation usage: ISE: "Couldn't get delegate" at LightClassDataHolderKt.findDelegate()
• KT-33352 "KotlinExceptionWithAttachments: Couldn't get delegate for class" on nested class/object
• KT-34042 "Error loading Kotlin facets. Kotlin facets are not allowed in Kotlin/Native Module" in 192 IDEA
• KT-34237 MPP with Android target: common* source sets are not shown as source roots in IDE

IDE. Debugger

• KT-11395 Breakpoint inside lambda argument of InlineOnly function doesn't work

IDE. Gradle

• KT-32960 KotlinMPPGradleModelBuilder takes a long time to process when syncing non-MPP project with IDE
• KT-34424 With Kotlin plugin in Gradle project without Native the IDE fails to start Gradle task: "Kotlin/Native properties file is absent at null/konan/konan.properties"

IDE. Inspections and Intentions

• KT-32965 False positive "Redundant qualifier name" with nested enum member call
• KT-33597 False positive "Redundant qualifier name" with class property initialized with same-named object property
• KT-33991 False positive "Redundant qualifier name" with enum member function call
• KT-34113 False positive "Redundant qualifier name" with Enum.values() from a different Enum

IDE. Run Configurations

• KT-34366 Implement gutters for running tests (multi-platform projects)

Libraries

• KT-33864 Read from pseudo-file system is empty

Tools. CLI

• KT-24966 Classloader problems when running basic kafka example with kotlin and kotlinc

Tools. Gradle

• KT-33980 Read the granular source sets metadata flag value once and cache it for the current Gradle build
• KT-34312 UnsupportedOperationException on requiresVisibilityOf in the Kotlin Gradle plugin

Tools. Gradle. JS

• KT-32319 Gradle, js, webpack: source-map-loader failed to load source contents from relative urls
• KT-33417 NodeTest failed with error "Failed to create MD5 hash" after NodeRun is executed
• KT-33747 Exception doesn't fail the test in kotlin js node runner

Tools. J2K

• KT-19355 "Variable expected" error after J2K for increment/decrement of an object field
• KT-19569 Java wrappers for primitives are converted to nullable types with nullability errors in Kotlin
• KT-30643 J2K: wrong position of TYPE_USE annotation
• KT-32518 Nullability information is lost after J2K convertion of constructor with null parameter
• KT-33941 J2K: Overload resolution ambiguity with assertThat and StackOverflowError in IDEA
• KT-33942 New J2K: StackOverflowError from org.jetbrains.kotlin.nj2k.inference.common.BoundTypeCalculatorImpl.boundTypeUnenhanced
• KT-34164 J2K: on converting static method references in other .java sources are not corrected
• KT-34165 J2K: imports are lost in conversion, references resolve to different same-named classes
• KT-34266 Multiple errors after converting Java class implementing an interface from another file

Tools. Scripts

• KT-33892 REPL/Script: Implement mechanism for resolve top-level functions and properties from classloader
• KT-34294 SamWithReceiver cannot be used with new scripting API

Tools. kapt

• KT-33503 Kapt, Spring Boot: "Could not resolve all files for configuration ':_classStructurekaptKotlin'"

Kotlin Native

Related Kotlin Native changelog can be found separately.

Previous releases

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

CHANGELOG

1.3.60 EAP 2

Compiler

• KT-18541 Prohibit "tailrec" modifier on open functions
• KT-19844 Do not render type annotations on symbols rendered in diagnostic messages
• KT-24913 KotlinFrontEndException with local class in init of generic class
• KT-28940 Concurrency issue for lazy values with the post-computation phase
• KT-31540 Change initialization order of default values for tail recursive optimized functions

IDE

• KT-21153 IDE: string template + annotation usage: ISE: "Couldn't get delegate" at LightClassDataHolderKt.findDelegate()
• KT-33352 "KotlinExceptionWithAttachments: Couldn't get delegate for class" on nested class/object
• KT-34042 "Error loading Kotlin facets. Kotlin facets are not allowed in Kotlin/Native Module" in 192 IDEA
• KT-34237 MPP with Android target: common* source sets are not shown as source roots in IDE

IDE. Debugger

• KT-11395 Breakpoint inside lambda argument of InlineOnly function doesn't work

IDE. Gradle

• KT-32960 KotlinMPPGradleModelBuilder takes a long time to process when syncing non-MPP project with IDE
• KT-34424 With Kotlin plugin in Gradle project without Native the IDE fails to start Gradle task: "Kotlin/Native properties file is absent at null/konan/konan.properties"

IDE. Inspections and Intentions

• KT-32965 False positive "Redundant qualifier name" with nested enum member call
• KT-33597 False positive "Redundant qualifier name" with class property initialized with same-named object property
• KT-33991 False positive "Redundant qualifier name" with enum member function call
• KT-34113 False positive "Redundant qualifier name" with Enum.values() from a different Enum

IDE. Run Configurations

• KT-34366 Implement gutters for running tests (multi-platform projects)

Libraries

• KT-33864 Read from pseudo-file system is empty

Tools. CLI

• KT-24966 Classloader problems when running basic kafka example with kotlin and kotlinc

Tools. Gradle

• KT-33980 Read the granular source sets metadata flag value once and cache it for the current Gradle build
• KT-34312 UnsupportedOperationException on requiresVisibilityOf in the Kotlin Gradle plugin

Tools. Gradle. JS

• KT-32319 Gradle, js, webpack: source-map-loader failed to load source contents from relative urls
• KT-33417 NodeTest failed with error "Failed to create MD5 hash" after NodeRun is executed
• KT-33747 Exception doesn't fail the test in kotlin js node runner

Tools. J2K

• KT-19355 "Variable expected" error after J2K for increment/decrement of an object field
• KT-19569 Java wrappers for primitives are converted to nullable types with nullability errors in Kotlin
• KT-30643 J2K: wrong position of TYPE_USE annotation
• KT-32518 Nullability information is lost after J2K convertion of constructor with null parameter
• KT-33941 J2K: Overload resolution ambiguity with assertThat and StackOverflowError in IDEA
• KT-33942 New J2K: StackOverflowError from org.jetbrains.kotlin.nj2k.inference.common.BoundTypeCalculatorImpl.boundTypeUnenhanced
• KT-34164 J2K: on converting static method references in other .java sources are not corrected
• KT-34165 J2K: imports are lost in conversion, references resolve to different same-named classes
• KT-34266 Multiple errors after converting Java class implementing an interface from another file

Tools. Scripts

• KT-33892 REPL/Script: Implement mechanism for resolve top-level functions and properties from classloader
• KT-34294 SamWithReceiver cannot be used with new scripting API

Tools. kapt

• KT-33503 Kapt, Spring Boot: "Could not resolve all files for configuration ':_classStructurekaptKotlin'"

Kotlin Native

Related Kotlin Native changelog can be found separately.

Previous releases

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

CHANGELOG

1.3.60

Android

• KT-27170 Android lint tasks fails in Gradle with MPP dependency

Compiler

New Features

• KT-31230 Refine rules for allowed Array-based class literals on different platforms: allow Array::class everywhere, disallow Array<...>::class on non-JVM
• KT-33413 Allow 'break' and 'continue' in 'when' statement to point to innermost surrounding loop

Performance Improvements

• KT-14513 Suboptimal compilation of lazy delegated properties with inline getValue
• KT-28507 Extra InlineMarker.mark invocation in generated suspending function bytecode
• KT-29229 Intrinsify 'in' operator for unsigned integer ranges

Fixes

• KT-7354 Confusing error message when trying to access package local java class
• KT-9310 Don't make interface and DefaultImpls methods synchronized
• KT-11430 Improve diagnostics for dangling lambdas
• KT-16526 Provide better error explanation when one tries to delegate var to read-only delegate
• KT-20258 Improve annotation rendering in diagnostic messages
• KT-22275 Unify exceptions from null checks
• KT-27503 Private functions uses from inside of suspendCoroutine go though accessor
• KT-28938 Coroutines tail-call optimization does not work for generic returns that had instantiated to Unit
• KT-29385 "AnalyzerException: Expected an object reference, but found I" for EXACTLY_ONCE non-inline contract with captured class constructor parameter
• KT-29510 "RuntimeException: Trying to access skipped parameter" with EXACTLY_ONCE contract and nested call of crossinline lambda
• KT-29614 java.lang.VerifyError: Bad type on operand stack - in inlining, crossinline in constructor with EXACTLY_ONCE contract
• KT-30275 Get rid of session in FirElement
• KT-30744 Invoking Interface Static Method from Extension method generates incorrect jvm bytecode
• KT-30785 Equality comparison of inline classes results in boxing
• KT-32217 FIR: support delegated properties resolve
• KT-32433 NI: UninferredParameterTypeConstructor with class property
• KT-32587 NI: Type mismatch "String" vs "String" in IDE on generic .invoke on generic delegated property
• KT-32689 Shuffled line numbers in suspend functions with elvis operator
• KT-32851 Constraint for callable reference argument doesn't take into account use-site variance
• KT-32864 The line number of assertFailsWith in suspending function is lost
• KT-33125 NI: "Rewrite at slice INDEXED_LVALUE_SET" with Mutable Map set index operator inside "@kotlin.BuilderInference" block
• KT-33414 'java.lang.AssertionError: int type expected, but null was found in basic frames' in kotlin-io while building library train
• KT-33421 Please make NOTHING_TO_INLINE warning shorter
• KT-33504 EA-209823 - ISE: ProjectResolutionFacade$computeModuleResolverProvider$resolverForProject$$.invoke: Can't find builtIns by key CacheKeyBySdk
• KT-33572 Scripting import with implicit receiver doesn't work
• KT-33821 Compiler should not rely on the default locale when generating boxing for suspend functions

Docs & Examples

• KT-26212 Update docs to explicitly mention that union is opposite of intersect
• KT-34086 Website, stdlib api docs: unresolved link jvm/stdlib/kotlin.text/-charsets/Charset

IDE

Fixes

• KT-8581 'Move Statement' doesn't work for statement finished by semicolon
• KT-9204 Shorten references and some other IDE features have problem when package name clash with class name
• KT-17993 Annotations are colored the same as language keywords
• KT-21037 LazyLightClassMemberMatchingError$WrongMatch “Matched :BAR MemberIndex(index=0) to :BAR MemberIndex(index=1) in KtLightClassImpl” after duplicating values inside enum class
• KT-23305 We should be able to see platform-specific errors in common module
• KT-23461 Move statement up/down attaches a comment block to the function being moved
• KT-26960 IDE doesn't report actual without expect placed into a custom platform-agnostic source set
• KT-27243 LazyLightClassMemberMatchingError when overriding hidden member
• KT-28404 Gradle configuration page is missing from a New Project Wizard creation flow for multiplatform templates
• KT-30824 No highlighting of declaration/usage of function with functional-type (lambda) parameter on its usage
• KT-31117 AssertionError at CompletionBindingContextProvider._getBindingContext when typing any character within string with injected Kotlin
• KT-31139 "Override members" on enum inserts semicolon before enum body
• KT-31810 Paste inside indented .trimIndent() raw string doesn't respect indentation
• KT-32401 Exceptions while running IDEA in headless mode for building searchable options
• KT-32543 UltraLight support for Kotlin collections.
• KT-32544 Support UltraLight classes for local/anonymous/enum classes
• KT-32799 2019.2 RC (192.5728.74) Kotlin plugin exception during build searchable options (Directory index may not be queried for default project)
• KT-33008 IDEA does not report in MPP: Upper bound of a type parameter cannot be an array
• KT-33316 Kotlin Facet: make sure the order of allPlatforms value is fixed
• KT-33561 LazyLightClassMemberMatchingError when overloading synthetic member
• KT-33584 Make kotlin light classes return no-arg constructor when no-arg (or jpa) compiler plugin is enabled
• KT-33775 please remove usages of org.intellij.plugins.intelliLang.inject.InjectorUtils#putInjectedFileUserData(com.intellij.lang.injection.MultiHostRegistrar, com.intellij.openapi.util.Key, T) deprecated eons ago
• KT-33813 Poor formatting of 'Selected target platforms' and 'Depends on' in facet settings
• KT-33937 delay() completion from kotlinx.coroutines causes happening of root package in code
• KT-33973 Kotlin objects could abuse idea plugin functionality
• KT-34000 Import quickfix does not work for extension methods from objects
• KT-34070 "No target platforms selected" message for commonTest facet at mobile shared library project
• KT-34191 Since-build .. until-build compatibility ranges are the same for 192 and 193 IDE plugins

IDE. Completion

• KT-10340 Import completion unable to shorten fq-names when there is a conflict between package name and local identifier
• KT-17689 Code completion for enum typealias doesn't show members
• KT-28998 Slow completion for build.gradle.kts (Kotlin Gradle DSL script)
• KT-30996 DSL extension methods which are not applicable are offered for completion
• KT-31902 Fully qualified name is used for delay instead of import and just method name
• KT-33903 Duplicating completion for imported extensions from companion objects

IDE. Debugger

• KT-10984 Disallow placing line breakpoints without executable code (changed)
• KT-22116 Support function breakpoints
• KT-24408 @InlineOnly: Misleading status for breakpoints in inline functions
• KT-27645 Debugger breakpoints do not work in suspend function executed in SpringBoot controller (MVC and WebFlux)
• KT-32687 Disallow breakpoints for @InlineOnly function bodies
• KT-32813 Exception on invoking "Smart Step Into"
• KT-32830 NPE on changing class property in Evaluate Expression window
• KT-33064 “Read access is allowed from event dispatch thread or inside read-action only” from KotlinLineBreakpointType.createLineSourcePosition on adding new line before the current one while stopping on breakpoint

IDE. Folding

• KT-6314 Folding of "when" construction

IDE. Gradle

• KT-33038 Package prefix is not imported in non-MPP project
• KT-33987 Serialization exception during importing Kotlin project in IDEA 192

IDE. Gradle. Script

• KT-31766 Gradle Kotlin DSL new project template: use type-safe model accessors

IDE. Inspections and Intentions

New Features

• KT-26431 Quickfix to remove redundant label
• KT-28049 Suggest import quickfix for operator extension functions
• KT-29622 "Move to separate file" intention should also work for sealed class
• KT-33178 Use a new compiler flag -Xinline-classes during enabling the feature via IDEA intention
• KT-33586 "Constructors are not allowed for objects" diagnostic needs quickfix to change object to class

Fixes

• KT-12291 Override/Implement Members: better member positioning inside the class
• KT-14899 Quickfix "Create member function" inserts too many semicolons when applied to Enum
• KT-15700 "Convert lambda to reference" does not work with backtick-escaped references
• KT-18772 "Introduce subject to when": don't choose an object or a constant as the subject
• KT-21172 Join declaration and assignment should place the result at the assignment, not at declaration
• KT-25697 Replace with dot call quickfix breaks formatting
• KT-26635 An empty line is added after actual modifier on "Create actual annotation class..." quick fix applied to annotation if it is annotated with comment
• KT-27270 "Add jar to classpath" quick fix modifies build.gradle of MPP project in a way that fails to be imported
• KT-28471 "Add initializer" quickfix initializes non-null variable with null
• KT-28538 create expected ... quick fix illegally creates expect member with a usage of a platform-specific type
• KT-28549 Create actual/expect quick fix for class/object doesn't add import for an inherited member
• KT-28620 Create expect/actual ... quick fix could save @test annotation on generation
• KT-28740 AE “2 declarations in var bar: [ERROR : No type, no body]” after applying “Create actual class” quick fix for class with property which has not specified type
• KT-28947 Backing field has created after applying “Create expected class in common module...” intention
• KT-30136 False negative "Redundant explicit 'this'" with local variable
• KT-30794 Quickfix for unchecked cast produces invalid code
• KT-31133 Liveness analysis on enum does not take into account calls to 'values'
• KT-31433 Incorrect "Create expected class..." for class with supertype
• KT-31475 "Create expect..." should delete 'override' modifier
• KT-31587 Redundant private modifier before primary constructor after create actual class
• KT-31921 "Create expected ..."/"Create actual..." quick fix: val and vararg modifiers are misordered in the generated expect/actual declaration
• KT-31999 "Variable declaration could be moved into when" inspection suggests to inline expression containing return (throw) statement
• KT-32012 Change parameter type quick fix: Don't use qualified name
• KT-32468 False positive SimplifiableCall "filter call could be simplified to filterIsInstance" with expression body function and explicit return type
• KT-32479 False positive "Redundant overriding method" with derived property and base function starting with get, set or is (Accidental override)
• KT-32571 "Create expect" quick fix incorrectly treats multiplatform stdlib typealiased types as platform-specific ones
• KT-32580 "Remove braces" QF for single-expression function with inferred lambda return type: "ClassCastException: class kotlin.reflect.jvm.internal.KClassImpl cannot be cast to class kotlin.jvm.internal.ClassBasedDeclarationContainer"
• KT-32582 Ambiguous message for [AMBIGUOUS_ACTUALS] error (master)
• KT-32586 "Make member open" quick fix doesn't update all the related actualisations of an expected member
• KT-32616 "To ordinary string literal" doesn't remove indents, newlines and trimIndent
• KT-32642 "Create expect" quick fix doesn't warn about a platform-specific annotation applied to the generated member
• KT-32650 "Replace 'if' with 'when'" removes braces from 'if' statement
• KT-32694 "Create expect"/"create actual" quick fix doesn't transfer use-site annotations
• KT-32737 "Create expect" quick fix adds actual modifier to an interface function with default implementation without a warning
• KT-32768 "Create expect" quick fix doesn't warn about a local supertype of an actual class while generating an expected declaration
• KT-32829 "Add .jar to the classpath" quick fix creates "compile"/"testCompile" dependencies in build.gradle
• KT-32972 No "remove braces" inspection for ${this}
• KT-32981 "Create enum constant" quick fix adds redundant empty line
• KT-33060 "Cleanup code" does not remove 'final' keyword for overridden function with non-canonical modifiers order
• KT-33115 "Replace overloaded operator with function call" intention should not be shown on incomplete expressions
• KT-33150 Don't suggest create expect function from function with private modifier
• KT-33153 False positive "Redundant overriding method" when overriding package private method
• KT-33204 False positive "flatMap call could be simplified to flatten()" with Array
• KT-33299 "Create type parameter from usage" should work with backticks
• KT-33300 "Create type parameter from usage" suggests for top level property
• KT-33302 KNPE after "Create type parameter from usage" with typealias
• KT-33357 'java.lang.Throwable: Assertion failed: Refactorings should be invoked inside transaction 'exception occurs when extracting sealed class from file with the same name
• KT-33362 Inspection "Extract class from current file" is not available for 'sealed' keyword
• KT-33437 “Argument rangeInElement (0,1) endOffset must not exceed descriptor text range (0, 0) length (0).” on creating Kotlin Script files inside package
• KT-33612 "Replace with safe call" quick fix moves code to another line
• KT-33660 "Convert to anonymous object" with nested SAM interface inserts object keyword in the wrong place
• KT-33718 "Create enum constant" quick fix adds after semicolon
• KT-33754 Improve error hint message for "Create expect/actual..."
• KT-33880 "Convert to range check" produces code that is subject to ReplaceRangeToWithUntil for range with exclusive upper bound
• KT-33930 Don't suggest "create expect" quick fix on lateinit and const top-level properties
• KT-33981 “KotlinCodeInsightWorkspaceSettings is registered as application service, but requested as project one” on opening QF menu for some fixes in IJ193

IDE. KDoc

• KT-20777 KDoc: Type parameters are not shown in sample code

IDE. Multiplatform

• KT-26333 IDE incorrectly requires actual implementations to be present in all the project source sets
• KT-28537 Platform-specific type taken from a dependency module isn't reported in common code
• KT-32562 Provide a registry key to enable/disable hierarchical multiplatform mechanism in IDE

IDE. Navigation

• KT-28075 Duplicate "implements" gutter icons on some interfaces
• KT-30052 Duplicated "is subclassed" editor gutter icons
• KT-33182 com.intellij.idea.IdeStarter#main has four (!) icons, should be two

IDE. REPL

• KT-33329 IllegalArgumentException in REPL

IDE. Refactorings

• KT-24929 'Search for references' checkbox state isn't saved on move of kotlin file
• KT-30342 Move refactoring: suggest file name starting with an uppercase letter
• KT-32426 Invalid code format after "Pull Members Up" on function with comment and another indent
• KT-32496 "Problems Detected" dialog message about conflicting declarations on moving file to another package is absolutely unreadable
• KT-33059 Exception [Assertion failed: Write access is allowed inside write-action only] in case of Move class to nonexistent folder
• KT-33972 Change signature should affect all hierarchy

IDE. Scratch

• KT-23986 No access to stdout output in Kotlin scratch
• KT-23989 Scratch: allow copy of a scratch output
• KT-28910 Add hint for Make before Run checkbox
• KT-29407 strange output for long strings
• KT-31295 Kotlin worksheet in projects, not as scratch files
• KT-32366 Sidebar as alternative output layout
• KT-33585 Synchronized highlighting of the main editor and side panel

IDE. Script

• KT-30206 Settings / ... / Kotlin Scripting with no project opened causes ISE: "project.baseDir must not be null" at ScriptTemplatesFromDependenciesProvider.loadScriptDefinitions()
• KT-32513 Intellij hangs in ApplicationUtilsKt.runWriteAction through ScriptDependenciesLoader$submitMakeRootsChange$doNotifyRootsChanged$1.run

IDE. Wizards

• KT-27587 Bump Android build tools version at Multiplatform (Android/iOS) template of the New Project Wizard
• KT-33927 MPP, Kotlin New project wizard: broken project generation
• KT-34108 Gradle Kotlin DSL: generated project with tasks element fails on configuration stage with Gradle 4.10
• KT-34154 New Project wizard: build.gradle.kts: type-safe code sets JVM 1.8 for main, but JVM 1.6 for test

JavaScript

• KT-12935 Generated source maps for JS mention nonexistent dummy.kt
• KT-26701 JS, rollup.js: Application can't depend on a library if both sourcemaps reference "dummy.kt"

Libraries

• KT-26309 Avoid division in string-to-number conversions
• KT-27545 File.copyTo: unclear error message when it fails to delete the destination
• KT-28804 Wrong parameter name in kotlin.text.contentEquals
• KT-32024 Modify Iterable<T>.take(n) implementation not to call .next() more than necessary
• KT-32532 MutableList.removeAll is lacking documentation
• KT-32728 CollectionsKt.windowed throws IllegalArgumentException (Illegal Capacity: -1) when size param is Integer.MAX_VALUE due to overflow operation

Reflection

• KT-13936 KotlinReflectionInternalError on invoking callBy on overridden member with inherited default argument value
• KT-17860 Improve KParameter.toString for receiver parameters

Tools

• KT-17045 Drop MaxPermSize support from compiler daemon
• KT-32259 org.jetbrains.annotations module exported from embeddable compiler, causes problems in Java modular builds

Tools. Android Extensions

• KT-32096 IDE plugin doesn't recognize that Parcelize is no longer experimental

Tools. CLI

• KT-24991 CLI: Empty classpath in kotlin script except for kotlin-runner.jar
• KT-26624 Set Thread.contextClassLoader when running programs with 'kotlin' launcher script or scripts with 'kotlinc -script'

Tools. Compiler Plugins

• KT-29471 output from jvm-api-gen plugin on classpath crashes downstream kotlinc-jvm: inline method with inner class
• KT-33630 cannot use @kotlinx.serialization.Transient and lateinit together on 1.3.50

Tools. Daemon

• 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-20760 Kotlin Gradle Plugin doesn't allow for configuring friend paths through API
• KT-34009 Associate compilations in the target–compilation project model

Performance Improvements

• KT-31666 Kotlin plugin configures all tasks in a project when kotlin.incremental is enabled

Fixes

• KT-17630 User test Gradle source set code cannot reach out internal members from the production code
• KT-22213 Android Extensions experimental mode doesn't work with Gradle Kotlin DSL
• KT-31077 android.kotlinOptions block is lacking its type
• KT-31641 Kapt configurations miss attributes to resolve MPP dependencies: Cannot choose between the following variants ...
• KT-31713 ConcurrentModificationException: Realize Pending during execution phase
• KT-32678 Bugfixes in HMPP source set visibility
• KT-32679 Testing & test tasks API in the target–compilation model
• KT-32804 Kapt-generated Java sources in jvm+withJava MPP module are not compiled and bundled
• KT-32853 ConcurrentModificationException when compiling with Gradle.
• KT-32872 Gradle test runner for Native does not show failed build if process quit without starting printing results.
• KT-33105 kapt+withJava in multiplatform module depending on other multiplatform fails on 1.3.50-eap-54
• KT-33469 Drop support for Gradle versions older than 4.3 in the Kotlin Gradle plugin
• KT-33470 Drop support for Gradle versions older than 4.9 in the Kotlin Gradle plugin

Tools. Gradle. JS

New Features

• KT-31478 Gradle, JS tests, Karma: Support sourcemaps in Gradle stacktraces
• KT-32073 Gradle, JS, karma: parse errors and warnings from karma output
• KT-32075 Gradle, JS, karma: download chrome headless using puppeteer

Fixes

• KT-31663 Gradle/JS: with not installed browser specified for browser test the response is "Successful, 0 tests found"
• KT-32216 Gradle, JS, tests: filter doesn't work
• KT-32224 In Gradle Kotlin/JS projects, the browserWebpack task does not rerun when the main compilation's outputs change
• KT-32281 Gradle, JS, karma: Headless chrome output is not captured
• KT-33288 JS: Incorrect bundle with webpack output.library and source maps
• KT-33313 When a Kotlin/JS test task runs using a custom compilation, it doesn't track the compilation outputs in its up-to-date checks
• KT-33547 Template JS Client and JVM Server works wrong on 1.3.50 Kotlin
• KT-33549 Gradle Kotlin/JS external declarations: search for typings key inside package.json
• KT-33579 Js tests with mocha cannot be run
• KT-33710 Task "generateExternals" for automatic Dukat execution does not work
• KT-33716 Gradle, Yarn: yarn is not downloading via YarnSetupTask
• KT-34101 CCE class org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest_Decorated cannot be cast to class org.gradle.api.provider.Provider on importing Gradle project with JS
• KT-34123 "Cannot find node module "kotlin-test-js-runner/kotlin-test-karma-runner.js"" in JS Client and JVM Server new project wizard template

Tools. J2K

New Features

• KT-7940 J2K: convert Integer.MAX_VALUE to Int.MAX_VALUE
• KT-22412 J2K: Intention to replace if(...) throw IAE with require
• KT-22680 Request: when converting Java->Kotlin, try to avoid creating functions for constant fields (static final)

Performance Improvements

• KT-33725 Java->Kotlin converter on paste performs expensive reparse in unrelated contexts
• KT-33854 J2K conversion of Interface freezes UI for more than 10 seconds without progress dialog
• KT-33875 [NewJ2K] InspectionLikeProcessingGroup pipeline rework: query isApplicable in parallel for all element first, apply relevant after in EDT

Fixes

• KT-19603 A mutable container property updated from another class converts to red code
• KT-19607 Static member qualified by child class converted to red code
• KT-20035 Automatic conversion from Java 1.8 to Kotlin 1.1.4 using Idea 2017.2.2: null!!
• KT-21504 J2K: Convert Long.parseLong(s) to s.toLong()
• KT-24293 Bug: conversion of Java "List" into Kotlin doesn't produce "MutableList"
• KT-32253 Converting Java class with field initialized by constructor parameter used to initialize a different field or named as a different field produces red code
• KT-32696 New J2K: java List is wrongly converted when pasting it to Kotlin file
• KT-32903 J2K: Static import is converted to unresolved reference
• KT-33235 Remove "Replace guard clause with kotlin's function call" inspection and tranform it to J2K post-processing
• KT-33434 UninitializedPropertyAccessException occurs after J2K convertion of package with custom functional interface and it's usage
• KT-33445 Two definitions of org.jetbrains.kotlin.idea.j2k.J2kPostProcessing in Kotlin 1.3.50-rc
• KT-33500 Unresolved reference after J2K convertion of isNaN/isFinite
• KT-33556 J2K converter fails on statically imported global overloaded functions
• KT-33679 Result of assignment with operation differs in kotlin after J2K conversion
• KT-33687 Extra empty lines are added after comment after J2K conversion
• KT-33743 Reference to static field outside its class is unresolved after J2K conversion
• KT-33756 J2K: main method with varargs is converted to non-runnable main kotlin method
• KT-33863 java.lang.IllegalStateException: argument must not be null exception occurs on J2K conversion of Generic class usage without type parameter

Tools. JPS

• KT-33808 JPS compilation is not incremental in IDEA 2019.3

Tools. Maven

• KT-34006 Maven plugin do not consider .kts files as Kotlin sources
• KT-34011 Kotlin scripting plugin is not loaded by default from kotlin maven plugin

Tools. REPL

• KT-27956 REPL/Script: extract classes and names right from ClassLoader

Tools. Scripts

• KT-31661 ClassNotFoundException in runtime for 'kotlinc -script' while compilation is fine
• KT-31704 [kotlin-scripting] passing name to String.toScriptSource make script compilation failed
• KT-32234 "Unable to derive module descriptor" when using Kotlin compiler (embeddable) in Java 9+ modular builds
• KT-33529 NCDF running kotlin script from command line
• KT-33554 Classpath not passed properly when evaluating standard script with kotlinc

Tools. kapt

• KT-31291 Incremental Kapt: IllegalArgumentException from org.jetbrains.org.objectweb.asm.ClassVisitor.<init>
• KT-33028 Kapt error "Unable to find package java.lang in classpath or bootclasspath" on JDK 11 with -source 8
• KT-33050 kapt does not honor source/target compatibility of enclosing project
• KT-33052 Kapt generates invalid java stubs for enum members with class bodies on JDK 11
• KT-33056 Incremental kapt is disabled due to javaslang.match.PatternsProcessor processor on classpath when Worker API is enabled
• KT-33493 1.3.50, org.jetbrains.org.objectweb.asm.ClassVisitor.
• KT-33515 Incremental kapt fails when I remove an annotated file
• KT-33889 Incremental KAPT: NoSuchMethodError: 'java.util.regex.Pattern com.sun.tools.javac.processing.JavacProcessingEnvironment.validImportStringToPattern(java.lang.String)'

Kotlin Native

Related Kotlin Native changelog can be found separately.

Previous releases

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

Content

The release contains the JVM version of Kotlin compiler and also one native system dependent version for every major platform (Linux, macOS, and Windows).

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
• KT-32519 Keyword completion: support fixing layout and typo tolerance

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
• KT-33246 Kotlin JS & Native tests + Gradle 5.6: No value has been specified for property 'binaryResultsDirectory'

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
• KT-33371 Add an ability to switch between old and new J2K via settings window
• KT-32863 New J2K: IllegalArgumentException occurs on Kotlin configuration in java project in Android Studio

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.

Previous releases

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

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