kotlin-fork/docs/changelogs/ChangeLog-1.3.X.md

Changelog 1.3.X

1.3.72 - IDE plugins update

Backend. JVM

• KT-39013 202, ASM 8: "AnalyzerException: Execution can fall off the end of the code"

IDE. Decompiler, Indexing, Stubs

• KT-37896 IAE: "Argument for @NotNull parameter 'file' of IndexTodoCacheManagerImpl.getTodoCount must not be null" through KotlinTodoSearcher.processQuery()

IDE. Gradle Integration

• KT-38037 UnsupportedOperationException on sync gradle Kotlin project with at least two multiplatform modules

IDE. Highlighting

• KT-39590 Turn new inference in IDE for 1.3.70 version off

IDE. Refactorings

• KT-38527 Move nested class to upper level fails silently: MissingResourceException

Tools.JPS

• KT-27458 The Kotlin standard library is not found in the module graph ... in a non-Kotlin project.

1.3.72

Compiler

• KT-37107 kotlinc allows calling default constructor of class with no constructors
• KT-37406 NI: "UnsupportedOperationException: no descriptor for type constructor of TypeVariable(T)" when compiling *.gradle.kts file

IDE

• KT-37483 Kotlin localisation
• KT-37629 False positive "Unsupported [literal prefixes and suffixes]" for infix function
• KT-37808 "Resolve pasted references" dialog freezes UI for 20 seconds when pasting kotlin code

IDE. Completion

• KT-37144 Completion goes into an infinite loop with Arrow 0.10.4 dependency

IDE. Debugger

• KT-37767 Debugger, NPE happens while stepping.

IDE. Editing

• KT-35135 UI freeze: not enough checkCancelled on resolve path

IDE. Inspections and Intentions

• KT-37217 Replace UseExperimental with OptIn intention removes target prefixes for annotations

IDE. Native

• KT-38079 IDEA navigates to wrong line of source code from Native stack trace

IDE. Navigation

• KT-37487 Destructuring declarations are called "destruction declarations" in UI

Tools. Gradle. Native

• KT-37696 MPP Gradle plugin: False positive parallel execution detection if build started with --continue

1.3.71

Compiler

• KT-36095 201: False positive OVERLOAD_RESOLUTION_AMBIGUITY with Java Enum.valueOf and Enum.values() reference
• KT-37040 'No explicit visibility in API mode' should not be reported on enum members
• KT-37204 AssertionError: "No delegated property metadata owner for" with lazy inside inline function

Docs & Examples

• KT-37029 Kotlin full stack app demo: update all involving versions to work with 1.3.70 release

IDE

• KT-34759 "PSI and index do not match" and high CPU usage when the library has enum with elements in quotes and internal lazy val in another part of code
• KT-37200 StackOverflowError in LightMethodBuilder.equals when analysing Kotlin files
• KT-37229 java.lang.NoSuchMethodError: 'com.intellij.psi.impl.light.LightJavaModule, com.intellij.psi.impl.light.LightJavaModule.findModule after updating kotlin plugin to 1.3.70
• KT-37273 No error in editor when typing unresolved reference in super constructor lambda
• KT-37414 Not all imports are added on paste if code is formatted after paste
• KT-37553 Run inspections after general highlight pass

IDE. Code Style, Formatting

• KT-37545 Continuation indent for method's parameter changes in call chain

IDE. Hints

• KT-37537 IDE is missing or swallowing keystrokes when hint popups are displayed

IDE. Inspections and Intentions

• KT-36478 IDE suggests to use 'OptIn' annotation when it is not available in the used version of kotlin-stdlib
• KT-37294 False positive "Unused unary operator" on negative long annotation value

IDE. Navigation

• KT-36657 KotlinFindUsagesHandler#processElementUsages always return false if options.isSearchForTextOccurrences is false

IDE. Refactorings

• KT-37451 Change of signature error: Type of parameter cannot be resolved
• KT-37597 Support Suggest rename and change signature refactorings in Kotlin for IDEA 2020.1

IDE. Run Configurations

• KT-36781 Override ConfigurationFactory::getId method in Kotlin plugin to avoid problems with localizations

JavaScript

• KT-37386 Incorrect JS generated by the compiler: function is erased by the function parameter

Tools. Gradle. JS

• KT-36196 Investigate performance problems while resolving in projects with npm dependencies

Tools. Gradle. Multiplatform

• KT-37264 In intermediate common source sets, internals are not visible from their dependsOn source sets during Gradle build

Tools. Gradle. Native

• KT-37565 MPP plugin: Forbid parallel in-process execution of the Kotlin/Native compiler

Tools. kapt

• KT-37241 Kapt: Classpath entry points to a non-existent location: ...build/intermediates/javac/debug/classes...

1.3.70

Compiler

New Features

• KT-34648 Support custom messages for @RequiresOptIn-marked annotations

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-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31411 Support mode of compiler where it analyses source-set as platform one, but produces only metadata for that specific source-set
• KT-31653 Incorrect transformation of the try-catch cover when inlining
• KT-31923 Outer finally block inserted before return instruction is not excluded from catch interval of inner try (without finally) block
• KT-31975 No diagnostic on error type
• KT-32106 New type inference: 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: Type mistmatch in collection type usage
• KT-32345 New type inference: Error when using helper method to create delegate provider
• KT-32372 Type inference errors in IDE
• KT-32415 Type mismatch on argument of super constructor of inner class call
• KT-32423 New type inference: IllegalStateException: Error type encountered: org.jetbrains.kotlin.types.ErrorUtils$UninferredParameterTypeConstructor@211a538e (ErrorType)
• KT-32435 New inference preserves platform types while old inference can substitute them with the nullable result type
• KT-32456 New type inference: "IllegalStateException: Error type encountered" when adding emptyList to mutableList
• KT-32499 Kotlin/JS 1.3.40 - 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 New type inference: Compilation error "IllegalArgumentException: ClassicTypeSystemContextForCS couldn't handle" with overloaded generic extension function reference passed as parameter
• KT-33033 New type inference: 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-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-33592 New type inference: 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-34060 UNUSED_PARAMETER is not reported on unused parameters of non-operator getValue/setValue/prodiveDelegate functions
• KT-34282 Missing diagnostic of unresolved for callable references with overload resolution ambiguity
• KT-34391 New type inference: False negative EXPERIMENTAL_API_USAGE_ERROR with callable reference
• KT-34395 KtWhenConditionInRange.isNegated() doesn't work
• 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-34779 JVM: "get()" is not invoked in optimized "for" loop over CharSequence.withIndex() with unused variable ("_") for the element in destructuring declaration
• KT-34786 Flaky type inference for lambda expressions
• KT-34820 New type inference: Red code when expanding type-aliased extension function in LHS position of elvis
• KT-34888 Kotlin REPL ignores compilation errors in class declaration
• KT-35035 Incorrect state-machine generated for suspend lambda inside inline lambda
• KT-35101 "AssertionError: Mapping ranges should be presented in inline lambda" with a callable reference argument to inline lambda
• KT-35168 New type inference: "UninitializedPropertyAccessException: lateinit property subResolvedAtoms has not been initialized"
• KT-35172 New type inference: False positive type mismatch if nullable type after elvis and safe call inside lambda is returning (expected type is specified explicitly)
• KT-35224 New type inference: Java call candidate with varargs as Array isn't present if SAM type was used in this call
• KT-35262 Suspend function with Unit return type returns non-unit value if it is derived from function with non-unit return type
• KT-35426 IncompatibleClassChangeError: Method 'int java.lang.Object.hashCode()' must be Methodref constant when invoking on super with explicit generic type
• KT-35843 Emit type annotations in JVM bytecode with target 1.8+ on basic constructions
• KT-36297 New type inference: ClassNotFoundException: compiler emits reference to nonexisting class for code with nested inline lambdas
• KT-36719 Enable new inference in IDE since 1.3.70

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-33939 Copy action leads to freezes
• 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-24399 No scrollbar in Kotlin compiler settings
• 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 Ultra light class support for compiler plugins
• KT-33820 Stop using com.intellij.codeInsight.AnnotationUtil#isJetbrainsAnnotation
• KT-33846 Stop using com.intellij.openapi.vfs.newvfs.BulkFileListener.Adapter
• 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
• KT-35673 ClassCastException on destructuring declaration with annotation
• KT-36008 IDEA 201: NSME: "com.intellij.openapi.progress.util.ProgressIndicatorUtils.awaitWithCheckCanceled(Future)" at org.jetbrains.kotlin.idea.util.ProgressIndicatorUtils.awaitWithCheckCanceled()

IDE. Code Style, Formatting

New Features

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

Fixes

• KT-4194 Code formatter should not move end of line comment after if condition to the next line
• KT-12490 Formatter inserts empty line between single-line declarations in presence of 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 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 lamdba
• KT-32277 Space before by delegate keyword on 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 presence of 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-23026 Code completion: Incorrect const in class declaration line
• KT-23834 Code completion and auto import do not suggest extension that differs from member only in type parameter
• KT-25732 null keyword should have priority in completion sort
• KT-29840 const is suggested inside the class body, despite it's illegal
• 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
• KT-36306 Code completion inlines content of FQN class if completion called in string

IDE. Debugger

Fixes

• KT-12242 Breakpoint in a class is not hit if the class was first accessed in Evaluate Expression
• KT-16277 Can't set breakpoint for object construction
• KT-20342 Step Over jumps to 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 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 Integration

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

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-34795 Gradle Kotlin DSL new project template: don't use setUrl syntax in settings.gradle.kts pluginManagement block
• 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
• KT-35563 Track script modifications between IDE restarts

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
• KT-36018 'Missing visibility' and 'missing explicit return type' compiler and IDE diagnostics for explicit API mode

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-33771 False positive "Redundant Companion reference" with Java synthetic property and same-named object property
• 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-35242 Text-range based inspection range shifts wrongly due to incremental analysis of whitespace and comments
• KT-35288 False positive "Remove braces from 'when' entry" in 'when' expression which returns lambda
• KT-35837 Editing Introduce import alias does not affect KDoc
• 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
• 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. Navigation

• KT-30736 References for import alias from kotlin library not found using ReferencesSearch.search
• KT-35310 PIEAE: "During querying provider Icon preview" at ClsJavaCodeReferenceElementImpl.multiResolve() on navigation to Kotlin declaration

IDE. Refactorings

Performance Improvements

• KT-24122 Long pauses with "removing redundant imports" dialog on rename refactoring for IDEA Kotlin Plugin

Fixes

• 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-32514 Moving file in with 'search for references' inlines contents in referred source code
• KT-32601 Introduce variable in unformatted lambda causes PIEAE
• 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-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()
• 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-34632 Kotlin/JS: Can not run single test method
• KT-35038 Running a test in a multi-module MPP project via IntelliJ Idea gutter action produces incorrect Gradle Run configuration

IDE. Script

• KT-34688 Many "scanning dependencies for script definitions progresses at the same time
• KT-35886 UI Freeze: ScriptClassRootsCache.hasNotCachedRoots 25 seconds

IDE. Tests Support

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

IDE. Wizards

New Features

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

Fixes

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

JS. Tools

• KT-35198 Kotlin/JS: with references to NPM/.kjsm library DCE produces invalid resulting JavaScript
• KT-36349 KJS: JS DCE use file's timestamps to compare files. It conflicts with gradle configuration 'preserveFileTimestamps = false'.

JavaScript

• KT-30517 KJS generates wrong call for secondary constructor w/ default argument when class inherited by object expression
• KT-33149 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

New Features

• KT-7657 scan() functions for Sequences and Iterable
• KT-15363 Builder functions for basic containers
• KT-21327 Add Deque & ArrayDeque to Kotlin standard library
• KT-33069 StringBuilder common functions
• KT-33761 reduceOrNull: reduce that doesn't throw on empty input
• KT-35347 Create method Collection.randomOrNull()
• KT-36118 Provide API for subtyping relationship between CoroutineContextKey and elements associated with this key

Fixes

• KT-17544 JS: document array destructuring behavior
• KT-33141 UnderMigration annotation is defined in Kotlin, but supposed to be used from Java
• 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

• KT-25206 Delegate build/run to gradle results regularly in cannot delete proto.tab.value.s
• KT-35181 Make kapt Gradle tasks compatible with instant execution

Tools. Gradle. JS

New Features

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

Fixes

• KT-30917 Tests: Inner classes mapped incorrectly in short test fail message
• KT-31894 ithout Kotlin sources browserRun makes the build fail
• KT-34946 DCE require some/all transitive dependencies. Invalid compilation result otherwise
• KT-35318 IllegalStateException on clean build with left-pad package and generateKotlinExternals=true
• KT-35428 Gradle dependency with invalid package.json
• KT-35598 Actualize NPM dependencies in 1.3.70
• KT-35599 Actualize Node and Yarn versions in 1.3.70
• KT-36714 Webpack output doesn't consider Kotlin/JS exports (library mode)

Tools. Gradle. Multiplatform

• KT-31570 Deprecate Kotlin 1.2.x MPP Gradle plugins
• KT-35126 Support Gradle instant execution for Kotlin/JVM and Android tasks
• KT-36469 Dependencies with compileOnly scope are not visible in Gradle build of MPP with source set hierarchies support

Tools. Gradle. Native

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

Tools. J2K

New Features

• KT-21811 Convert string concatenation into multiline string

Performance Improvements

• KT-16774 UI Freeze: J2K, PlainTextPasteImportResolve: IDEA freezes for 10+ seconds when copy-pasting Java code from external source to Kotlin file

Fixes

• KT-18001 Multi-line comments parsed inside Kdoc comments
• KT-19574 Code with inferred default parameters and parameter vs property name clashes
• KT-32551 Non-canonical modifiers order inspection is not applied during convertion of inner super class
• KT-33637 Property with getter is converted into incompailable code if backing field was not generated
• KT-34673 First comment in function (if, for, while) block is moved to declaration line of block
• KT-35081 Invalid code with block comment (Javadoc)
• KT-35152 J2K breaks formatting by moving subsequent single line comments to first column
• 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-34274 Add support for @CompilerOptions annotation in kotlin-main-kts
• KT-34716 Implement default cache in 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 Turn worker API on by default
• KT-33617 Java 9+: "IllegalStateException: Should not be called!"
• KT-34167 Annotation Processor incorrectly marked as isolating causes full rebuild silently.
• KT-34258 kapt.incremental.apt=true makes build failed after moving annotation processor files
• KT-34569 Kapt doesn't handle methods with both the @Override annotation and override keyword
• KT-36113 Enabling kapt.incremental.apt makes remote build cache miss via classpathStructure$kotlin_gradle_plugin property

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

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
• 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

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
• 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
• KT-33626 Deadlock with Kotlin LockBasedStorageManager in IDEA commit dialog
• KT-34402 Unresolved reference to Kotlin.test library in CommonTest in Multiplatform project without JVM target
• KT-34639 Multiplatform project with the only (Android) target is incorrectly imported into IDE

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

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
• 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"
• KT-34256 Fail to use multiplatform modules with dependsOn with android plugin
• KT-34663 Low performance of MPP 1.2 during import with module-per-source-set enabled

IDE. Gradle. Script

• KT-31766 Gradle Kotlin DSL new project template: use type-safe model accessors
• KT-34463 New Gradle-based project template misses pluginManagement{} block in EAP branch
• KT-31767 Gradle Kotlin DSL new project template: use settings.gradle.kts

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
• 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. 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. Run Configurations

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

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
• KT-34229 New Project wizard: IDEA 193+: Mobile Android/iOS: creating another project of this type tries to write into previous one

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

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

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
• 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

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
• 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
• KT-33828 jsPackageJson task fails after changing artifact origin repository
• KT-34460 NPM packages clash if declared in dependencies and devDependencies both
• KT-34555 [Kotlin/JS] Unsafe webpack config merge

Tools. Gradle. Native

• KT-33076 MPP Gradle plugin: Produce final native binaries from compilation output instead of sources
• KT-33645 Kotlin/Native: Compilation failure if a library passed by the -Xinclude option contains a constructor annotated with @OverrideInit
• KT-34259 MPP Gradle plugin: Support fat frameworks for watchOS and tvOS
• KT-34329 Support watchOS and tvOS in CocoaPods Gradle plugin

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
• 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. 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
• 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-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)'
• KT-33503 Kapt, Spring Boot: "Could not resolve all files for configuration ':_classStructurekaptKotlin'"
• KT-33800 KAPT aptMode=compile fails to compile certain legitimate code

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

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

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
• KT-31941 Good code red in IDE with smart cast on parameter of a generic type after null check

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)
• KT-31992 Fix ColorsIcon.scale(float) compatibility issue between IU-192.5118.30 and 1.3.40-eap-105

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
• KT-31952 Fix compatibility issues with IDEA after fixing IDEA-187832

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
• KT-31931 Gradle JS or Native: test processing fails in some cases

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"
• KT-31023 Update Gradle module metadata warning in MPP publishing

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

1.3.31

Compiler

Fixes

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

IDE. Inspections and Intentions

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

JavaScript

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

Tools. Gradle

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

Tools. kapt

• KT-30979 Issue with Dagger2 providers MissingBinding with 1.3.30

1.3.30

Compiler

New Features

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

Performance Improvements

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

Fixes

• KT-7185 Parse import directives in the middle of the file, report a diagnostic instead
• KT-7237 Parser recovery (angle bracket mismatch)
• KT-11656 Could not generate LightClass because of ISE from bridge generation on invalid code
• KT-13497 Better recovery in comma-separated lists in case of missing comma
• KT-13703 Restore parser better when class is missing from enum declaration
• KT-13731 Recover parser on value parameter without a type
• KT-14227 Incorrect code is generated when using MutableMap.set with plusAssign operator
• KT-19389 Couldn't inline method call 'with'
• KT-20065 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with generic typealias
• KT-20322 Debug: member value returned from suspending function is not updated immediately
• KT-20780 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with parameterized inner type alias
• KT-21405 Throwable “Rewrite at slice LEXICAL_SCOPE key: VALUE_PARAMETER_LIST” on editing string literal in kotlin-js module
• KT-21775 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with typealias used from a different module
• KT-22818 "UnsupportedOperationException: Don't know how to generate outer expression" on using non-trivial expression in default argument of expect function
• KT-23117 Local delegate + local object = NoSuchMethodError
• KT-23701 Report error when -Xmultifile-parts-inherit is used and relevant JvmMultifileClass parts have any state
• KT-23992 Target prefixes for annotations on supertype list elements are not checked
• KT-24490 Wrong type is inferred when last expression in lambda has functional type
• KT-24871 Optimize iteration and contains for UIntRange/ULongRange
• KT-24964 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with Validated typealias from Arrow
• KT-25383 Named function as last statement in lambda doesn't coerce to Unit
• KT-25431 Type mismatch when trying to bind mutable property with complex common system
• KT-25435 Try/catch as the last expression of lambda cause type mismatch
• KT-25437 Type variable fixation of postponed arguments and type variables with Nothing constraint
• KT-25446 Empty labeled return doesn't force coercion to Unit
• KT-26069 NoSuchMethodError on calling remove/getOrDefault on a Kotlin subclass of Java subclass of Map
• KT-26638 Check for repeatablilty of annotations doesn't take into account annotations with use-site target
• KT-26816 Lambdas to Nothing is inferred if multilevel collections is used (listOf, mapOf, etc)
• KT-27190 State machine elimination after inlining stopped working (regression)
• KT-27241 Contracts: smartcasts don't work correctly if type checking for contract function is used
• KT-27565 Lack of fallback resolution for SAM conversions for Kotlin functions in new inference
• KT-27799 Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects
• KT-28182 Kotlin Bytecode tool window shows incorrect output on annotated property with backing field
• KT-28236 "Cannot serialize error type: [ERROR : Unknown type parameter 2]" with inferred type arguments in generic extension function from Arrow
• KT-28309 Do not generate LVT entries with different types pointing to the same slot, but have different types
• KT-28317 Strange behavior in testJvmAssertInlineFunctionAssertionsEnabled on Jdk 6 and exception on JDK 8
• KT-28453 Mark anonymous classes for callable references as synthetic
• KT-28598 Type is inferred incorrectly to Any on a deep generic type with out projection
• KT-28654 No report about type mismatch inside a lambda in generic functions with a type parameter as a return type
• KT-28670 Not null smartcasts on an intersection of nullable types don't work
• KT-28718 progressive mode plus new inference result in different floating-point number comparisons
• KT-28810 Suspend function's continuation parameter is missing from LVT
• KT-28855 NoSuchMethodError with vararg of unsigned Int in generic class constructor
• KT-28984 Exception when subtype of kotlin.Function is used as an expected one for lambda or callable reference
• KT-28993 Incorrect behavior when two lambdas are passed outside a parenthesized argument list
• KT-29144 Interface with companion object generates invalid bytecode in progressive mode
• KT-29228 Intrinsify 'for' loop for unsigned integer ranges and progressions
• KT-29324 Warnings indexing jdk 11 classes
• KT-29367 New inference doesn't wrap annotated type from java to TypeWithEnhancement
• KT-29507 @field-targeted annotation on property with both getter and setter is absent from bytecode
• KT-29705 'Rewrite at slice CONSTRUCTOR` of JS class while editing another JVM-class
• KT-29792 UnsupportedOperationException: Unsupported annotation argument type when using Java annotation with infinity or NaN as a default value
• KT-29891 Kotlin doesn't allow to use local class literals as annotation arguments
• KT-29912 Crossinline nonsuspend lambda leads to KNPE during inlining
• KT-29965 Don't generate annotation on $default method
• KT-30030 Extensive 'Rewrite at slice'-exception with contracts in JS module of multiplatform project
• KT-22043 Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4
• KT-26150 KotlinFrontendException is thrown when callsInPlace called twice with different InvocationKind in functions with contracts
• KT-26153 Contract is allowed when it's at the beginning in control flow terms, but not in tokens order terms (contract doesn't work)
• KT-26191 Contract may not be the first statement if it's part of the expression
• KT-29178 Prohibit arrays of reified type parameters in annotation arguments in local classes / anonymous objects
• KT-20507 PROTECTED_CONSTRUCTOR_NOT_IN_SUPER_CALL not reported for generic base class constructor call, IAE at run-time
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-28285 NullPointerException on calling Array constructor compiled via Excelsior JET
• KT-29376 Report a deprecation warning when comparing enum to any other incompatible type
• KT-29884 Report warning on @Synchronized on inline method
• KT-30073 ClassCastException on coroutine start with crossinline lambda
• KT-30597 "Extend selection" throws exception in empty class body case
• KT-29492 Double cross-inline of suspending functions produces incorrect code
• KT-30508 Wrong file name in metadata of suspend function capturing crossinline lambda
• KT-30679 "KotlinFrontEndException: Front-end Internal error: Failed to analyze declaration" exception during a compilation of a multiplatform project containing Kotlin Script File

IDE

New Features

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

Performance Improvements

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

Fixes

• KT-11143 Do not insert closing brace for string template between open brace and identifier
• KT-18503 Optimize imports produces red code
• KT-27283 KotlinULiteralExpression and PsiLanguageInjectionHost mismatch
• KT-27794 KotlinAnnotatedElementsSearcher doesn't process method parameters
• KT-28272 UAST: Need to be able to identify SAM conversions
• KT-28360 Getting tons of "There are 2 classes with same fqName" logs in IntelliJ
• KT-28739 Bad caret position after Insert curly braces around variable inspection
• KT-29013 Injection with interpolation loses suffix
• KT-29025 Implement UReferenceExpression.referenceNameElement for Kotlin
• KT-29287 Exception in ultra-light classes on method annotated with @Throws
• KT-29381 Highlight return lambda expressions when cursor is one the call with lambda argument
• KT-29434 Can not detect injection host in string passed as argument into arrayOf() function
• KT-29464 Project reopening does not create missing Kotlin SDK for Native modules (like it does for other non-JVM ones)
• KT-29467 Maven/Gradle re-import does not add missing Kotlin SDK for kotlin2js modules (non-MPP JavaScript)
• KT-29804 Probable error in the "Kotlin (Mobile Android/iOS)" new project template in IntelliJ
• KT-30033 UAST: Delegation expression missing from parse tree
• KT-30388 Disable constant exception reporting from release versions
• KT-30524 "java.lang.IllegalStateException: This method shouldn't be invoked for LOCAL visibility" on add import
• KT-30534 KotlinUObjectLiteralExpression returns classReference whose referenceNameElement is null
• KT-30546 Kotlin UImportStatement's children references always resolve to null
• KT-5435 Surround with try/catch should generate more Kotlin-style code

IDE. Android

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

IDE. Code Style, Formatting

• KT-23295 One-line comment indentation in functions with expression body
• KT-28905 When is "... if long" hitting?
• KT-29304 Settings / Code Style / Kotlin mentions "methods" instead of functions
• KT-26954 Bad indentation for single function with expression body in new code style

IDE. Completion

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

IDE. Debugger

• KT-22250 Evaluate: 'this' shows different values when evaluated as a variable/watch
• KT-24829 Access to coroutineContext in 'Evaluate expression'
• KT-25220 Evaluator: a instance of Pair returned instead of String ("Extract function" failed)
• KT-25222 Evaluate: ClassCastException: ObjectValue cannot be cast to IntValue ("Extract function" failed)
• KT-26913 Change local variable name mangling ($receiver -> this_)
• KT-28087 [Kotlin/JVM view] Inconsistent debugging data inside forEachIndexed
• KT-28134 Separate JVM/Kotlin views in "Variables" tool window
• KT-28192 Exception from KotlinEvaluator: cannot find local variable
• KT-28680 Missing this word completion in "Evaluate expression" window
• KT-28728 Async stack trace support for Kotlin coroutines
• KT-21650 Debugger: Can't evaluate value, resolution error
• KT-23828 Debugger: "Smart cast is impossible" when evaluating expression
• KT-29661 Evaluate expression: "Cannot find local variable" for variable name escaped with backticks
• KT-29814 Can't evaluate a property on star-projected type
• KT-29871 Debugger in IDE does not handle correctly extensions.
• KT-30182 Incorrect KT elvis expression debugger evaluation
• KT-29189 [BE] 'Step Over' falls through 'return when' (and 'return if') instead of executing individual branches
• KT-29234 ISE “@NotNull method org/jetbrains/kotlin/codegen/binding/CodegenBinding.anonymousClassForCallable must not return null” on debugging with breakpoints in Kotlin script file
• KT-29423 Unable to evaluate lambdas on jdk 9-11
• KT-30220 Empty variables view when breakpoint inside an lambda inside class
• KT-30318 KotlinCoroutinesAsyncStackTraceProvider slows down java debugging
• KT-17811 Couldn't inline method error for inline method with anonymous object initialization and reified type parameter
• KT-30611 Debugger: in projects with stdlib of 1.2.n version Frames view can't complete loading, EvaluateException: "Method threw 'java.lang.ClassNotFoundException' exception." at EvaluateExceptionUtil.createEvaluateException()

IDE. Decompiler

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

IDE. Gradle

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

IDE. Gradle. Script

• KT-27684 Gradle Kotlin DSL: the rootProject field is unresolved in IDEA for a common module
• KT-29465 IndexNotReadyException on context menu invocation for build.gradle.kts file
• KT-29707 "Navigate declaration" navigates to compiled class in gradle cache folder instead of classes defined in gradle buildSrc folder
• KT-29832 Multiple Script Definitions for settings.gradle.kts
• KT-30623 Errors in build.gradle.kts after applying new script dependencies
• KT-29474 Regression in 1.3.20: Kotlin IDE plugin parses all *.gradle.kts files when any class in buildSrc is opened
• KT-30130 “Access is allowed from event dispatch thread only.” from ScriptNewDependenciesNotificationKt.removeScriptDependenciesNotificationPanel() on creating foo.gradle.kts files in IJ from master

IDE. Hints

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

IDE. Hints. Inlay

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

IDE. Hints. Parameter Info

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

IDE. Inspections and Intentions

New Features

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

Fixes

• KT-7593 On splitting property declaration for functional expression additional bracket added
• KT-12273 "Replace with operator" intention is suggested for some non-operator functions and produces invalid code
• KT-18715 Replace if with elvis swallows comments
• KT-19254 Intention to convert object literal to class always creates a class named "O"
• KT-25501 "Replace overloaded operator with function call" changes semantics of increment and decrement operators
• KT-26979 "Lambda argument inside parentheses" inspection is not reported, if function type is actual type argument, but not formal parameter type
• KT-27143 Intention "Replace camel-case name with spaces" is suggested for snake_case names in test functions and renames them incorrectly
• KT-28081 "Convert to lambda" changes expression type for interface with multiple supertypes
• KT-28131 False positive "Redundant lambda arrow" with a functional type argument
• KT-28224 "Add braces to 'else' statement" moves comment outside braces when 'if-else' is inside 'if / when' branch
• KT-28592 False positive "Remove redundant backticks" for underscore variable name
• KT-28596 "Can be replaced with binary operator" shouldn't be suggested when receiver or argument is floating point type
• KT-28641 "Remove useless cast" produces a dangling lambda ("Too many arguments" error)
• KT-28698 "Convert to apply" intention: include function calls with this passed as an argument
• KT-28773 Kotlin/JS: Wrong inspection to replace .equals() with == on dynamic values
• KT-28851 'Convert parameter to receiver' adds Array<out T> wrapper to vararg parameter and drops override modifier in implementations
• KT-28969 TYPE_MISMATCH in array vs non-array case: two quick fixes exist for annotation and none of them adds array literal
• KT-28995 "Add parameter to constructor" quickfix for first enum member changes arguments for all members
• KT-29051 "Add parameter to constructor" quickfix for not-first enum member: "PsiInvalidElementAccessException: Element: class org.jetbrains.kotlin.psi.KtStringTemplateExpression #kotlin because: different providers"
• KT-29052 "Add parameter to constructor" quickfix for not-first enum member inserts FQN type for parameter
• KT-29056 KNPE in ConvertPrimaryConstructorToSecondary with missing property identifier
• KT-29085 False positive "Class member can have 'private' visibility" for a const val used in a public inline function
• KT-29093 False positive inspection "Redundant lambda arrow" with nested lambdas
• KT-29099 "Convert to apply" intention is not available for a single function call
• KT-29128 False positive 'Explicitly given type is redundant here' when typealias is used
• KT-29153 False negative "'rangeTo' or the '..' call should be replaced with 'until'" with bracketed expressions
• KT-29193 Quick fix "Create extension function" List<Int>.set should not be suggested for read-only collections
• KT-29238 Non-canonical modifiers order inspection incorrectly includes annotations into range
• KT-29248 "Convert member to extension" doesn't preserve visibility
• KT-29416 False positive "Redundant property getter" for external getter
• KT-29469 False positive in "Boolean literal argument without parameter name" inspection for varargs parameters
• KT-29549 Make package name convention inspection global
• KT-29567 "Remove empty class body" is a poor name for inspection text
• KT-29606 Do not propose to remove unused parameter of property setter
• KT-29763 False negative "Object literal can be converted to lambda" for block body function with explicit return
• KT-30007 False negative "Add import for '...'" in UserType
• KT-19944 multiplatform: Convert expect/actual function to property should keep the caret on the converted function
• KT-27289 "Create" quick fix on FQN does nothing with KNPE at KotlinRefactoringUtilKt$chooseContainerElement$1.renderText()
• KT-29312 "Make constructor parameter a property" produces wrong modifier order + exception "Invalid range specified"
• KT-29414 "Main parameter is not necessary" inspection reports parameter of main() in object
• KT-29499 "Unsafe call of inline function with nullable extension receiver" inspection ignores inferred nullability
• KT-29927 Missing "Import members from" intention with type check operator in when branch
• KT-30010 Introduce alternative quick-fixes for map[key]!!
• KT-30166 False positive "Redundant companion reference" on companion with the outer class name
• KT-14886 Create Property from Usage should place generated property next to other properties
• KT-16139 Adding explicit type argument leads to type mismatch
• KT-19462 False positive inspection "Redundant lambda arrow" for overloaded functions
• KT-22137 Create class quickfix is not suggested in return statement
• KT-23259 False positive unchecked cast warning/quickfix result in good code turning red
• KT-27641 "Specify type explicitly" suggests too general type even when type hint shows specific generic type
• KT-29124 False positive inspection 'Redundant lambda arrow' with generic function/constructor with lambda argument
• KT-29590 False positive inspection "Redundant lambda arrow" with vararg lambda arguments passed via spread operator
• KT-29977 False positive "Unused import directive" for typealias of an enum imported as static
• KT-30233 Change order of the quick fixes when method does not accept nullable types
• KT-30341 False positive 'Use withIndex() instead of manual index increment' inspection with destructive declaration in 'for' loop
• KT-30414 "Replace return with 'if' expression" drops return label
• KT-30426 Don't preserve extra line when adding remaining branches for when
• KT-30433 "Convert member to extension" doesn't update external Kotlin calls
• KT-30117 Kotlin unused import analysis accesses file editor manager model outside UI thread
• KT-29143 Unnecessary primary constructor keyword inspection
• KT-29444 "Make public" intention does not remove additional white-space to conform to proper style
• KT-30337 Do not propose to move variable declaration into "when" if it's not used inside the when-expression

IDE. Multiplatform

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

IDE. Navigation

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

IDE. Refactorings

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

IDE. Scratch

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

IDE. Script

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

IDE. Tests Support

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

IDE. Wizards

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

Libraries

• KT-27108 .toDouble() and .toFloat() conversions for unsigned types
• KT-29520 Random.Default cannot be used asJavaRandom
• KT-30109 Documentation for Result.onSuccess and Result.onFailure are flipped around
• KT-26378 'contains' overloads for unsigned integer ranges with other unsigned integer types
• KT-26410 High-order function overloads for unsigned arrays
• KT-27262 Binary search for specialized arrays of unsigned integers
• KT-28339 Add fill extension function for unsigned primitive arrays
• KT-28397 UByteArray plus UByteArray = List
• KT-28779 Implement method sum() for arrays of unsigned primitives
• KT-29151 Documentation for CharSequence.take() & String.take() shows examples of Iterable.take()
• KT-30035 add max/maxOf/min/minOf for unsigned types
• KT-30051 elementAt extension function of Array/PrimitiveAray/UnsignedArray does not throw IndexOutOfBoundException on incorrect index (JS only)
• KT-30141 JS: document Array.get behavior
• KT-30704 Documentation of Random function not quite correct

Tools. CLI

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

Tools. Gradle

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

Tools. J2K

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

Tools. JPS

• KT-30137 Deadlock during concurrent classloading

Tools. Maven

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

Tools. REPL

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

Tools. Scripts

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

Tools. kapt

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

Docs & Examples

• KT-30091 KClass documentation incorrectly shows all members available on all platforms
• KT-30100 Clarify Map.toSortedMap docs
• KT-30418 Documentation for floor() and ceil() functions is misleading
• KT-29373 MutableSet.add documentation is confusing

1.3.21

Compiler

Fixes

• KT-29475 IllegalArgumentException at getAbstractTypeFromDescriptor with deeply nested expression inside function named with a right parenthesis
• KT-29479 WARN: Could not read file on Java classes from JDK 11+
• KT-29360 Kotlin 1.3.20-eap-100: This marker function should never been called. Looks like compiler did not eliminate it properly. Please, report an issue if you caught this exception.

IDE

Fixes

• KT-29486 Throwable: "Could not find correct module information" through IdeaKotlinUastResolveProviderService.getBindingContext() and ReplaceWithAnnotationAnalyzer.analyzeOriginal()
• KT-29394 Kotlin 1.3.20 EAP: Excess log messages with kotlin.parallel.tasks.in.project=true
• KT-29474 Regression in 1.3.20: Kotlin IDE plugin parses all *.gradle.kts files when any class in buildSrc is opened
• KT-29290 Warning "function returning deferred with a name that does not end with async" should not be displayed for let/also/apply...
• KT-29494 Don't report BooleanLiteralArgumentInspection in batch (offline) mode with INFORMATION severity
• KT-29525 turning on parallel tasks causes java.lang.NoClassDefFoundError: Could not initialize class kotlin.Unit sometimes
• KT-27769 Change the DSL marker icon
• KT-29118 Log polluted with multiple "Kotlin does not support alternative resolve" reports

IDE. Multiplatform

• KT-28128 MPP Kotlin/Native re-downloads POM files on IDE Gradle refresh

IDE. REPL

• KT-29400 IDE REPL in Gradle project: "IllegalStateException: consoleView must not be null" on module build

Libraries

Fixes

• KT-29612 jlink refuses to consume stdlib containing non-public package kotlin.native

Tools. CLI

• KT-29596 "AssertionError: Cannot load extensions/common.xml from kotlin-compiler.jar" on IBM JDK 8

Tools. Gradle

• KT-29476 1.3.20 MPP Android publishing common api configuration with runtime scope
• KT-29725 MPP Gradle 5.2: NoSuchMethodError in WrapUtil
• KT-29485 In MPP with Gradle module metadata, POM rewriting does not replace the root module publication with a platform one if the former has a custom artifact ID

Tools. Scripts

• KT-29490 Regression in 1.3.20: Kotlin Jsr223 script engine cannot handle functional return types

Tools. Kapt

• KT-29481 Annotation processors run on androidTest source set even without the kaptAndroidTest declaration
• KT-29513 kapt throws "ZipException: zip END header not found", when Graal SVM jar in classpath

1.3.20

Android

• KT-22571 Android: Configure Kotlin should add implementation dependency instead of compile

Compiler

New Features

• KT-14416 Support of @PolymorphicSignature in Kotlin compiler
• KT-22704 Allow expect annotations with actual typealias to Java to have default argument values both in expected and in actual
• KT-26165 Support VarHandle in JVM codegen
• KT-26999 Inspection for unused main parameter in Kotlin 1.3

Performance Improvements

• KT-16867 Proguard can't unbox Kotlin enums to integers
• KT-23466 kotlin compiler opens-reads-closes .class files many times over
• KT-25613 Optimise boxing of inline class values inside string templates

Fixes

• KT-2680 JVM backend should generate synthetic constructors for enum entries (as javac does).
• KT-6574 Enum entry classes should be compiled to package private classes
• KT-8341 Local variable cannot have type parameters
• KT-14529 JS: annotations on property accessors are not serialized
• KT-15453 Annotations are ignored on accessors of private properties
• KT-18053 Unexpected behavior with "in" infix operator and ConcurrentHashMap
• KT-18592 Compiler cannot resolve trait-based superclass of Groovy dependency
• KT-19613 "Public property exposes its private type" not reported for primary constructor properties
• KT-20344 Unused private setter created for property
• KT-21862 java.lang.NoSuchFieldError when calling isInitialized on a lateinit "field" of a companion object
• KT-21946 Compilation error during default lambda inlining when it returns anonymous object
• KT-22154 Warning: Stripped invalid locals information from 1 method when compiling with D8
• KT-23369 Internal compiler error in SMAPParser.parse
• KT-23543 Back-end (JVM) Internal error: Couldn't inline method
• KT-23739 CompilationException: Back-end (JVM) Internal error: Couldn't inline method call: Unmapped line number in inlined function
• KT-24156 For-loop optimization should not be applied in case of custom iterator
• KT-24672 JVM BE: Wrong range is generated in LVT for variables with "late" assignment
• KT-24780 Recursive suspend local functions: "Expected an object reference, but found ."
• KT-24937 Exception from parser (EA-76217)
• KT-25058 Fix deprecated API usage in RemappingClassBuilder
• KT-25288 SOE when inline class is recursive through type parameter upper bound
• KT-25295 “Couldn't transform method node” error on compiling inline class with inherited interface method call
• KT-25424 No coercion to Unit when type argument specified explicitly
• KT-25702 @JvmOverloads should not be allowed on constructors of annotation classes
• KT-25893 crossinline suspend function leads to IllegalStateException: call to 'resume' before 'invoke' with coroutine or compile error
• KT-25907 "Backend Internal error" for a nullable loop variable with explicitly declared type in a for-loop over String
• KT-25922 Back-end Internal error : Couldn't inline method : Lambda inlining : invoke(Continuation) : Trying to access skipped parameter
• KT-26126 Front-end doesn't check that fun with contract and callsInPlace effect is an inline function; compiler crashes on val initialization
• KT-26366 UseExperimental with full qualified reference to marker annotation class is reported as error
• KT-26384 Compiler crash with nested multi-catch try, finally block and inline function
• KT-26505 Improve error message on missing script base class kotlin.script.templates.standard.ScriptTemplateWithArgs
• KT-26506 Incorrect bytecode generated for inner class inside inline class referencing outer 'this'
• KT-26508 Incorrect accessor generated for private inline class method call from lambda
• KT-26509 Internal compiler error on generating inline class private method call from companion object
• KT-26554 VerifyError: Bad type on operand stack for inline class with default parameter of underlying type
• KT-26582 Array literal of a primitive wrapper class is loaded as a primitive array literal
• KT-26608 Couldn't inline method call. RuntimeException: Trying to access skipped parameter: Ljava/lang/Object;
• KT-26658 Trying to access skipped parameter exception in code with crossinline suspend lambda with suspend function with default parameter call
• KT-26715 NullPointerException for an inline class constructor reference
• KT-26848 Incorrect line in coroutine debug metadata for first suspension point
• KT-26908 Inline classes can't have a parameter with a default value (Platform declaration clash)
• KT-26931 NSME “InlineClass.foo-impl(LIFace;)I” on calling inherited method from inline class instance
• KT-26932 CCE “Foo cannot be cast to java.lang.String” when accessing underlying value of inline class through reflection
• KT-26998 Default extension fun call in generic Kotlin interface with inline class substituted type of extension receiver fails with internal compiler error
• KT-27025 Inline class access to private companion object fun fails with VerifyError
• KT-27070 Delegated property with inline class type delegate fails with internal error in codegen
• KT-27078 Inline class instance captured in closure fails with internal error (incorrect bytecode generated)
• KT-27107 JvmStatic in inline class companion doesn't generate static method in the class
• KT-27113 Inline class's toString is not called when it is used in string extrapolation
• KT-27140 Couldn't inline method call 'ByteArray' with inline class
• KT-27162 Incorrect container is generated to callable reference classes for references to inline class members
• KT-27259 "Internal error: wrong code generated" for nullable inline class with an inline class underlying type
• KT-27318 Interface implementation by delegation to inline class type delegate fails with internal error in codegen
• KT-27358 Boxed inline class type default parameter values fail with CCE at run-time
• KT-27416 "IllegalStateException: Backend Internal error" for inline class with a function with default argument value
• KT-27429 "-java-parameters" compiler argument fails in constructor when there is an inline class parameter present
• KT-27513 Backend Internal Error when using inline method inside inline class
• KT-27560 Executing getter of property with type kotlin.reflect.KSuspendFunction1 throws MalformedParameterizedTypeException
• KT-27705 Internal compiler error (incorrect bytecode generated) when inner class constructor inside inline class references inline class primary val
• KT-27706 Internal compiler error (incorrect bytecode generated) when inner class inside inline class accepts inline class parameter
• KT-27732 Using type inference on platform types corresponding to unsigned types causes compiler error
• KT-27737 CCE for delegated property of inline class type
• KT-27762 The lexer crashes when a vertical tabulation is used
• KT-27774 Update asm to 7.0 in Kotlin backend
• KT-27948 "Argument 2: expected R, but found I" for equals operator on nullable and non-null unsigned types
• KT-28054 Inline class: "Cannot pop operand off an empty stack" for calling private secondary constructor from companion object
• KT-28061 Safe call operator and contracts: false negative "A 'return' expression required in a function with a block body"
• KT-28185 Incorrect behaviour of javaClass intrinsic for receivers of inline class type
• KT-28188 CCE when bound callable reference with receiver of inline class type is passed to inline function
• KT-28237 CoroutineStackFrame uses slashes instead of dots in FQN
• KT-28361 Class literal for inline class should return KClass object of the wrapper
• KT-28385 Rewrite at slice FUNCTION in MPP on "red" code
• KT-28405 VE “Bad type on operand stack” at runtime on creating inline class with UIntArray inside
• KT-28585 Inline classes not properly boxed when accessing a var (from enclosing scope) from lambda
• KT-28847 Compilation fails with "AssertionError: Rewrite at slice FUNCTOR" on compiling complicated case with delegating property
• KT-28879 "AnalyzerException: Expected I, but found R" when compiling javaClass on inline class value
• KT-28920 "AnalyzerException: Expected I, but found R" when compiling javaObjectType/javaPrimitiveType with inline classes
• KT-28965 Unsound smartcast to definitely not-null if value of one generic type is cast to other generic type
• KT-28983 Wrong mapping of flexible inline class type to primitive type

IDE

New Features

• KT-25906 Kotlin language injection doesn't evaluate constants in string templates
• KT-27461 Provide live template to generate main() with no parameters
• KT-28371 Automatically align ?: (elvis operator) after call on the new line

Performance Improvements

• KT-23738 Provide stubs for annotation value argument list
• KT-25410 Opening Settings freezes the UI for 23 seconds
• KT-27832 Improve performance of KotlinGradleProjectResolverExtension
• KT-28755 Optimize searching constructor delegation calls
• KT-29297 Improve performance of light classes in IDE (Java-to-Kotlin interop)

Fixes

• KT-9840 Right parenthesis doesn't appear after class name before the colon
• KT-13420 Extend Selection: lambda: whole literal with braces is selected after parameters
• KT-17502 Do not disable "Generate equals and hashCode" actions for data classes
• KT-22590 Create Kotlin SDK if it's absent on importing from gradle/maven Kotlin (JavaScript) projects and on configuring java project to Kotlin(JavaScript), Kotlin(Common)
• KT-23268 IntelliJ plugin: Variables from destructing declarations are not syntax colored as variables
• KT-23864 Copyright message is duplicated in kotlin file in root package after updating copyright
• KT-25156 SOE in IDE on destructuring delegated property declaration
• KT-25681 Remove "Coroutines (experimental)" settings from IDE and do not pass -Xcoroutines to JPS compiler (since 1.3)
• KT-26868 MPP: Gradle import: test dependencies get Compile scope
• KT-26987 "Extend Selection" is missing for labeled return
• KT-27095 Kotlin configuration: update EAP repositories to use https instead of http
• KT-27321 Cannot init component state if "internalArguments" presents in xml project structure (kotlinc.xml)
• KT-27375 Kotlin Gradle DSL script: "Unable to get Gradle home directory" in new project with new Gradle wrapper
• KT-27380 KotlinStringLiteralTextEscaper returns wrong offset on unparseable elements
• KT-27491 MPP JVM/JS wizard: Use Ktor in the skeleton
• KT-27492 Create some MPP wizard tests
• KT-27530 Kotlin Gradle plugin overwrites the JDK set by jdkName property of the Gradle Idea plugin
• KT-27663 Uast: don't store resolved descriptors in UElements
• KT-27907 Exception on processing auto-generated classes from AS
• KT-27954 Generate -> toString() using "Multiple templates with concatenation" should add spaces after commas
• KT-27941 MPP: Gradle import with "using qualified names" creates 2 modules with the same content root
• KT-28199 Could not get javaResolutionFacade for groovy elements
• KT-28348 Don't log or wrap ProcessCanceledException
• KT-28401 Show parameter info for lambdas during completion
• KT-28402 Automatically indent || and && operators
• KT-28458 New Project Wizard: move multiplatform projects to the new DSL
• KT-28513 Bad Kotlin configuration when old syntax is used for configured Gradle project with >= 4.4 version
• KT-28556 Wrong nullability for @JvmOverloads-generated method parameter in light classes
• KT-28997 Couldn't get delegate for class from any local class or object in script
• KT-29027 Kotlin LightAnnotations don't handle vararg class literals

IDE. Android

• KT-23560 Scratch: impossible to run scratch file from Android Studio
• KT-25450 NoClassDefFoundError when trying to run a scratch file in Android Studio 3.1.3, Kotlin 1.2.51
• KT-26764 kotlin content root isn't generated for Android module of a multiplatform project on Gradle import

IDE. Code Style, Formatting

• KT-5590 kotlin: line comment must not be on first column by default
• KT-24496 IntelliJ IDEA: Formatting around addition / subtraction not correct for Kotlin
• KT-25417 Incorrect formatting for comments on property accessors
• KT-27847 Destructured declaration continued on the next line is formatted with double indent
• KT-28070 Code style: "Align when multiline" option for "extends / implements list" changes formating of enum constants constructor parameters
• KT-28227 Formatter should not allow enum entries to be on one line with opening brace
• KT-28484 Bad formatting for assignment when continuation for assignments is disabled

IDE. Completion

• KT-18089 Completion for nullable types without safe call rendered in gray color is barely visible
• KT-20706 KDoc: Unneeded completion is invoked after typing a number/digit in a kdoc comment
• KT-22579 Smart completion should present enum constants with higher rank
• KT-23834 Code completion and auto import do not suggest extension that differs from member only in type parameter
• KT-25312 Autocomplete for overridden members in expected class inserts extra override word
• KT-26632 Completion: "data class" instead of "data"
• KT-27916 Autocomplete val when auto-completing const

IDE. Debugger

Fixes

• KT-13268 Can't quick evaluate expression with Alt + Click without get operator
• KT-14075 Debugger: Property syntax accesses private Java field rather than synthetic property accessor
• KT-22366 Debugger doesn't stop on certain expressions
• KT-23585 Evaluation of a static interface method call fails
• KT-24343 Debugger, Step Over: IllegalStateException on two consecutive breakpoints when first breakpoint is on an inline function call
• KT-24959 Evaluating my breakpoint condition fails with exception
• KT-25667 Exception in logs from WeakBytecodeDebugInfoStorage (NoStrataPositionManagerHelper)
• KT-26795 Debugger crashes with NullPointerException when evaluating const value in companion object
• KT-26798 Check that step into works with overrides in inline classes
• KT-27414 Use "toString" to render values of inline classes in debugger
• KT-27462 Main without parameters just with inline fun call: Debug: last Step Over can't finish the process
• KT-28028 IDEA is unable to find sources during debugging
• KT-28342 Can't evaluate the synthetic 'field' variable
• KT-28487 ISE “resultValue is null: cannot find method generated_for_debugger_fun” on evaluating value of inline class

IDE. Decompiler

• KT-27284 Disable highlighting in decompiled Kotlin bytecode
• KT-27460 "Show Kotlin bytecode": "Internal error: null" for an inline extension property from a different file

IDE. Gradle

• KT-27265 Unresolved reference in IDE on calling JVM source set members of a multiplatform project with Android target from a plain Kotlin/JVM module

IDE. Gradle. Script

• KT-14862 IDEA links to class file instead of source in buildSrc (Gradle/Kotlin script)
• KT-17231 "Optimize Import" action not working for Gradle script kotlin.
• KT-21981 Optimize imports on the fly does not take implicit imports into account in .kts files
• KT-24623 Class defined in gradle buildSrc folder is marked as unused when it is actually used in Gradle Script Kotlin file
• KT-24705 Script reports are shown in the editor only after caret move
• KT-24706 Do not attach script reports if 'reload dependencies' isn't pressed
• KT-25354 Gradle Kotlin-DSL: Changes of buildSrc are not visible from other modules
• KT-25619 Intentions not working in buildSrc (Gradle)
• KT-27674 Highlighting is skipped in files from buildSrc folder of Gradle project

IDE. Hints

• KT-13118 Parameter info is not shown for Kotlin last-argument lambdas
• KT-25162 Parameter info for builder functions and lambdas
• KT-26689 Lambda return expression hint not shown when returning a lambda from inside a lambda
• KT-27802 The hint for the if-expression is duplicated inside each branch

IDE. Inspections and Intentions

New Features

• KT-2029 Add inspection for boolean literals passed without using named parameters feature
• KT-5071 Properly surround a function invocation in string template by curly braces
• KT-5187 Quick Fix to remove inline keyword on warning about performance benefits
• KT-6025 Auto-remove toString() call in "Convert concatenation to template"
• KT-9983 "'inline'' modifier is not allowed on virtual members." should have quickfix
• KT-12743 Add Intention to convert nullable var to non-nullable lateinit
• KT-15525 Inspection to warn on thread-blocking invocations from coroutines
• KT-17004 There is no suggestion to add property to supertype
• KT-19668 Inspection "Redundant else in if"
• KT-20273 Inspection to report a setter of a property with a backing field that doesn't update the backing field
• KT-20626 Inspection for '+= creates a new list under the hood'
• KT-23691 Warn about var properties with default setter and getter that doesn't reference backing field
• KT-24515 Intention to add an exception under the cursor to @Throws annotations
• KT-25171 Inspection: Change indexed access operator on maps to Map.getValue
• KT-25620 Inspection for functions returning Deferred
• KT-25718 Add intention to convert SAM lambda to anonymous object
• KT-26236 QuickFix for ASSIGN_OPERATOR_AMBIGUITY on mutable collection '+=', '-='
• KT-26511 Inspection (without highlighting by default) for unlabeled return inside lambda
• KT-26653 Intention to replace if-else with x?.let { ... } ?: ...
• KT-26724 Inspection with a warning for implementation by delegation to a var property
• KT-26836 Add quick fix for type mismatch between signed and unsigned types for constant literals
• KT-27007 Intention: add label to return if scope is visually ambiguous
• KT-27075 Add a quick fix/intention to create expect member for an added actual declaration
• KT-27445 Add quickfix for compiler warning "DEPRECATED_JAVA_ANNOTATION"
• KT-28118 Remove empty parentheses for annotation entries
• KT-28631 Suggest to remove single lambda argument if its name is equal to it
• KT-28696 Inspection: detect potentially ambiguous usage of coroutineContext
• KT-28699 Add "Convert to also" intention

Performance Improvements

• KT-26969 ConvertCallChainIntoSequence quick fix doesn't use sequences all the way

Fixes

• KT-4645 Unexpected behevior of "Replace 'if' with 'when'" intention when called on second or third 'if'
• KT-5088 "Add else branch" quickfix on when should not add braces
• KT-7555 Omit braces when converting 'this' in 'Convert concatenation to template'
• KT-8820 No "Change type" quick fix inside when
• KT-8875 "Remove explicit type" produce red code for extension lambda
• KT-12479 IDEA doesn't propose to replace all usages of deprecated annotation when it declared w/o parentheses
• KT-13311 IDE marks fun finalize() as unused and says that its effective visibility is private
• KT-14555 Strange 'iterate over Nothing' intention
• KT-15550 Intention "Add names to call arguments" isn't available if one argument is a generic function call
• KT-15835 "Leaking 'this' in constructor" for enum class
• KT-16338 "Leaking 'this' in constructor" of non-final class when using 'this::class.java'
• KT-20040 Kotlin Gradle script: unused import doesn't become grey
• KT-20725 Cannot persist excluded methods for inspection "Accessor call that can be replaced with property syntax"
• KT-21520 "Assignment should be lifted out of 'if'" false positive for arguments of different types
• KT-23134 "Remove single lambda parameter" quick fix applied to a lambda parameter with explicit type breaks ::invoke reference on lambda
• KT-23512 "Remove redundant receiver" quick fix makes generic function call incompilable when type could be inferred from removed receiver only
• KT-23639 False positive "Unused symbol" for sealed class type parameters
• KT-23693 Add missing actual members quick fix doesn't work if there is already same-named function with the same signature
• KT-23744 "Kotlin library and Gradle plugin versions are different" inspection false positive for non-JVM dependencies
• KT-24492 "Call on collection type may be reduced" does not change labels from mapNotNull to map
• KT-25536 Use non-const Kotlin 'val' usage in Java code isn't reported on case labels (& assignments)
• KT-25933 ReplaceCallWithBinaryOperator should not suggest to replace 'equals' involving floating-point types
• KT-25953 Meaningless auto properties for Atomic classes
• KT-25995 "Simplify comparision" should try to apply "Simplify if expression" when necessary
• KT-26051 False positive "Redundant visibility modifier" for overridden protected property setter made public
• KT-26337 Exception (resource not found) in quick-fix tests in AS32
• KT-26481 Flaky false positive "Receiver parameter is never used" for local extension function
• KT-26571 Too much highlighting from "convert call chain into sequence"
• KT-26650 False negative "Call chain on collection should be converted into 'Sequence'"" on class implementing Iterable
• KT-26662 Corner cases around 'this' inside "replace if with safe access"
• KT-26669 "Remove unnecessary parentheses" reports parens of function returned from extension function
• KT-26673 "Remove parameter" quick fix keeps unused type parameter referred in type constraint
• KT-26710 Should not report "implicit 'it' is shadowed" when outer it is not used
• KT-26839 Add braces to if statement produces code that is not formatted according to style
• KT-26902 Bad quickfix name for "Call on non-null type may be reduced"
• KT-27016 Replace 'if' with elvis operator w/ interface generates invalid code (breaks type inference)
• KT-27034 "Redundant SAM constructor" inspection shouldn't make all lambda gray (too much highlighting)
• KT-27061 False positive "Convert to secondary constructor" with delegation
• KT-27071 "Add non-null asserted (!!) call" places !! at wrong position with operator get (array indexing)
• KT-27093 Create actual class from expect class doesn't add all necessary imports
• KT-27104 False positive "Convert call chain into Sequence" with groupingBy
• KT-27116 "Object literal can be converted to lambda" produces code littered with "return@label"
• KT-27138 Change visibility intentions are suggested on properties marked with @JvmField
• KT-27139 Add getter intention is suggested for properties marked with @JvmField
• KT-27146 False positive "map.put() can be converted to assignment" on super keyword with LinkedHashMap inheritance
• KT-27156 Introduce backing property intention is suggested for property marked with @JvmField
• KT-27157 Convert property to function intention is suggested for property marked with @JvmField
• KT-27173 "Lift return out of ..." should work on any of targeted return keywords
• KT-27184 "Replace with safe call" is not suggested for nullable var property that is impossible to smart cast
• KT-27209 "Loop parameter 'it' is unused": unhelpful quickfix
• KT-27291 "Create" quick fix: "destination directory" field suggests same root and JVM roots for all platforms
• KT-27354 False positive "Make 'Foo' open" for data class inheritance
• KT-27408 "Add braces to 'if' statement" moves end-of-line comment inside an if branch
• KT-27486 ConvertCallChainIntoSequence quick fix doesn't convert 'unzip' into 'Sequence'
• KT-27539 False positive Redundant Companion reference when val in companion is effectively shadowed by inherited val
• KT-27584 False positive "Move lambda argument out of parentheses" when implementing interface by delegation
• KT-27590 No “Change parameter” quick fix for changing argument type from UInt to Int
• KT-27619 Inspection "Invalid property key" should check whether reference is soft or not
• KT-27664 Fix flaky problem in tests "Could not initialize class UnusedSymbolInspection"
• KT-27699 "Remove redundant spread operator" produces incorrect code
• KT-27708 IDE highlights internal constructors used only from Java as unused
• KT-27791 Don't suggest Implement as constructor parameters quick fix for actual class declaration
• KT-27861 RedundantCompanionReference false positive for nested class with name "Companion"
• KT-27906 SafeCastAndReturn is not reported on code block with unqualified return
• KT-27951 False declaration in actual list (same name but not really actual)
• KT-28047 False positive "Redundant lambda arrow" for lambda returned from when branch
• KT-28196 KotlinAddImportAction: AWT events are not allowed inside write action
• KT-28200 KNPE in TypeUtilsKt.getDataFlowAwareTypes
• KT-28268 Don't suggest "make abstract" quick fix for inline classes
• KT-28286 "Unused symbol" inspection: Interface is reported as "class"
• KT-28341 False positive "Introduce backing property" intention for const values
• KT-28381 Forbid "move property to constructor" for expect classes
• KT-28382 Forbid "introduce backing property" for expect classes
• KT-28383 Exception during "move to companion" for expect class member
• KT-28443 "Move out of companion object" intention is suggested for @JvmField property inside companion object of interface
• KT-28504 Redundant async inspection: support calls on explicitly given scope
• KT-28540 "Replace assert boolean with assert equality" inspection quickfix doesn't add import statement
• KT-28618 Kotlin: convert anonymous function to lambda expression failed if no space at start of lambda expression
• KT-28694 "Assign backing field" quick fix adds empty line before created assignment
• KT-28716 KotlinDefaultHighlightingSettingsProvider suppresses inspections in non-kotlin files
• KT-28744 val-keyword went missing from constructor of inline class after applying “Create actual class...” intention
• KT-28745 val-keyword went missing from constructor of inline class after applying “Create expected class in common module...” intention

IDE. KDoc

• KT-24788 Endless exceptions in offline inspections

IDE. Multiplatform

• KT-26518 Create actual ... quick fix doesn't add a primary constructor call for the actual secondary constructor
• KT-26893 Multiplatform projects fail to import into Android Studio 3.3, 3.4
• KT-26957 Merge expect gutter icon, when used for the same line
• KT-27295 MPP: Rebuild module / Recompile source does nothing for Native with Delegate to gradle = Yes
• KT-27296 MPP: Rebuild module / Recompile source does nothing for Common with Delegate to gradle = Yes
• KT-27335 New multiplatform wizard: mobile library is generated with failed test
• KT-27595 KNPE on attempt to generate equals(), hashCode(), toString() for expect class

IDE. Navigation

• KT-22637 Go to actual declarations for enum values should choose correct value if they are written in one line
• KT-27494 Create tooling tests for new-multiplatform
• KT-28206 Go to implementations on expect enum shows not only enum classes, but also all members
• KT-28398 Broken navigation to actual declaration of println() in non-gradle project

IDE. Project View

• KT-26210 IOE “Cannot create file” on creating new file with existing filename by pasting a code in Project view
• KT-27903 Can create file with empty name without any warning

IDE. REPL

• KT-29285 Starting REPL in Gradle project: Will compile into IDEA's out folder which then shadows Gradle's compile output

IDE. Refactorings

• KT-23603 Add the support for find usages/refactoring of the buildSrc sources in gradle kotlin DSL build scripts
• KT-26696 Copy, Move: "Destination directory" field does not allow to choose a path from non-JVM module
• KT-28408 "Extract interface" action should not show private properties
• KT-28476 Extract interface / super class on non-JVM class throws KNPE

IDE. Scratch

• KT-23523 Filter out fake gradle modules from checkbox in Scratch file panel
• KT-25032 Scratch: IDEA hangs/freezes on code that never returns (infinite loops)
• KT-26271 Scratches for Kotlin do not work when clicking "Run Scratch File" button
• KT-26332 Fix classpath intention in Kotlin scratch file in Java only project doesn't do anything
• KT-27628 Scratch blocks AWT Queue thread
• KT-28045 'Run kotlin scratch' is shown for jest tests

IDE. Script

• KT-24465 Provide a UI to manage script definitions
• KT-24466 Add warning when there are multiple script definitions for one script
• KT-25818 IDE Scripting Console files shouldn't have scratch panel
• KT-26331 Please extract ScriptDefinitionContributor/KotlinScriptDefinition from kotlin-plugin.jar to separate jar
• KT-27669 Consider moving expensive tasks out of the UI thread
• KT-27743 Do not start multiple background threads loading dependencies for different scripts
• KT-27817 Implement a lightweight EP in a separate public jar for supplying script definitions to IDEA
• KT-27960 Add capability to import one Script to another
• KT-28046 "Reload script dependencies on file change" option is missing after project restart

IDE. Tests Support

• KT-27977 Missing 'run' gutter on a test method of an abstract class
• KT-28080 Wrong run configuration created from context for test method in abstract class

JS. Tools

• KT-27361 Support NamedConstructor in idl2k
• KT-28786 Float values initialized incorrectly while translating from IDL
• KT-28821 Kotlin/JS missing ClipboardEvent definitions
• KT-28864 Better support for TrackEvent, MediaStreamTrackEvent and RTCTrackEvent in idl

JavaScript

• KT-27611 Calling a suspending function of a JS library causes "Uncaught ReferenceError: CoroutineImpl is not defined"
• KT-28207 Finally block loops forever for specific code shape
• KT-28215 JS: inline suspend function not usable in non-inlined form
• KT-29003 KotlinJS: Size of String in stdlib is limited if the the Constructor String(chars: CharArray) gets used

Libraries

New Features

• KT-18398 Provide a way for libraries to avoid mixing Kotlin 1.0 and 1.1 dependencies in end user projects
• KT-27919 Publish modularized artifacts under 'modular' classifier

Performance Improvements

• KT-27251 Do not use Stack in FileTreeWalk iterator implementation

Fixes

• KT-12473 KotlinJS - comparator returning 0 changes order
• KT-20743 Use strongly typed events in Kotlin2js DOM API
• KT-20865 Retrieving groups by name is not supported on Java 9 even with kotlin-stdlib-jre8 in the classpath
• KT-23932 add "PointerEvent" for kotlin-stdlib-js
• KT-24336 Kotlin/JS missing SVGMaskElement interface
• KT-25371 Support unsigned integers in kotlinx-metadata-jvm
• KT-27629 kotlin.test BeforeTest/AfterTest annotation mapping for TestNG
• KT-28091 Provide correct AbstractMutableCollections declarations in stdlib-common
• KT-28251 Stdlib: Deprecated ReplaceWith kotlin.math.log replacement instead of kotlin.math.ln
• KT-28488 Add clarification for COROUTINES_SUSPENDED documentation
• KT-28572 readLine() stumbles at surrogate pairs
• KT-29187 JS toTypedArray returns array of invalid type for LongArray and BooleanArray

Reflection

• KT-26765 Support calling constructors with inline classes in the signature in reflection
• KT-27585 Flaky IllegalPropertyDelegateAccessException: Cannot obtain the delegate of a non-accessible property. Use "isAccessible = true" to make the property accessible
• KT-27598 "KotlinReflectionInternalError" when using callBy on constructor that has inline class parameters
• KT-27913 ReflectJvmMapping.getKotlinFunction(ctor) works incorrectly with types containing variables of inline class

Tools. CLI

• KT-27226 Argfiles: An empty argument in quotes with a whitespace or a newline after it interrupts further reading of arguments
• KT-27430 [Experimental API] Report warning instead of error if non-marker is used in -Xuse-experimental/-Xexperimental
• KT-27626 -Xmodule-path does not work in Gradle project with Java 9
• KT-27709 Using an experimental API that does not exist should warn, not error
• KT-27775 Re-enable directories passed as in -Xbuild-file
• KT-27930 Do not use toURI in ModuleVisibilityUtilsKt.isContainedByCompiledPartOfOurModule if possible
• KT-28180 Backslash-separated file paths in argfiles do not work on Windows
• KT-28974 Serialization bug in CommonToolArguments, affecting MPP project data serialization

Tools. Compiler Plugins

• KT-24997 Pass arguments to Kapt in human-readable format
• KT-24998 Introduce separate command line tool specifically for Kapt in order to improve UX
• KT-25128 ABI jar generation in the CLI compiler for Bazel like build systems.

Tools. Gradle

New Features

• KT-26963 Warn user that a custom platform-agnostic source set wouldn't be included into build unless it is required for other source sets
• KT-27394 Add kotlinOptions in compilations of the new MPP model
• KT-27535 Implement AARs building and publishing in new MPP
• KT-27685 In new MPP, expose a compilation's default source set via DSL
• KT-28155 Add ability to run tasks in parallel within project
• KT-28842 Enable JS IC by default

Performance Improvements

• KT-24530 Enable compile avoidance for kaptKotlin tasks
• KT-28037 In-process Kotlin compiler leaks thread local values

Fixes

• KT-26065 Kotlin Gradle plugin resolves dependencies at configuration time
• KT-26389 Support Gradle Kotlin DSL in projects with the kotlin-multiplatform plugin
• KT-26663 Gradle dependency DSL features missing for the new MPP dependencies
• KT-26808 Deprecation Warning Gradle 5 - "DefaultSourceDirectorySet constructor has been deprecated"
• KT-26978 Gradle verification fails on DiscoverScriptExtensionsTask
• KT-27682 Kotlin MPP DSL: a target is missing the attributes { ... } function, only the attributes property is available.
• KT-27950 Gradle 5.0-rc1: "Compilation with Kotlin compile daemon was not successful"
• KT-28355 Gradle Kotlin plugin publishes "api" dependencies with runtime scope
• KT-28363 Enable resources processing for Kotlin/JS target in multiplatform projects
• KT-28469 Gradle Plugin: Task DiscoverScriptExtensionsTask is never up-to-date
• KT-28482 Always rewrite the MPP dependencies in POMs, even when publishing with Gradle metadata
• KT-28520 MPP plugin can't be applied altogether with the "maven-publish" plugin in a Gradle 5 build
• KT-28635 fromPreset() in MPP Gradle plugin DSL is hard to use from Gradle Kotlin DSL scripts
• KT-28749 Expose allKotlinSourceSets in KotlinCompilation
• KT-28795 The localToProject attribute is not properly disambiguated with Gradle 4.10.2+
• KT-28836 Kotlin compiler logs from Gradle Kotlin Plugin aren't captured by Gradle
• KT-29058 Gradle Plugin: Multiplatform project with maven-publish plugin does not use project group for "metadata" artifact POM

Tools. J2K

• KT-26073 Irrelevant "create extra commit with java->kt rename"

Tools. JPS

• KT-26980 JPS Native warning is duplicated for test source sets
• KT-27285 MPP: invalid common -> platform dependency: JPS fails with Throwable "Cannot initialize Kotlin context: Cyclically dependent modules" at KotlinChunk.()
• KT-27622 JPS, JS: Resources marked as "kotlin-resource" are not copied to the out folder in a Kotlin-js project
• KT-28095 JPS: support -Xcommon-sources for multiplatform projects (JS)
• KT-28316 Report Native is not yet supported in IDEA internal build system on JPS build once per project/multiplatform module
• KT-28527 JPS: Serialization plugin not loaded in ktor
• KT-28900 With "Keep compiler process alive between invocations = No" (disabled daemon) JPS rebuild fails with SCE: "Provider AndroidCommandLineProcessor not a subtype" at PluginCliParser.processPluginOptions()

Tools. Scripts

• KT-27382 Embeddable version of scripting support (KEEP 75)
• KT-27497 kotlin script - No class roots are found in the JDK path
• KT-29293 Script compilation - standard libs are not added to the dependencies
• KT-29301 Some ivy resolvers are proguarded out of the kotlin-main-kts
• KT-29319 scripts default jvmTarget causes inlining problems - default should be 1.8

Tools. kapt

New Features

• KT-28024 Kapt: Add option for printing timings for individual annotation processors
• KT-28025 Detect memory leaks in annotation processors

Performance Improvements

• KT-28852 Cache classloaders for tools.jar and kapt in Gradle workers

Fixes

• KT-24368 Kapt: Do not include compile classpath entries in the annotation processing classpath
• KT-25756 Investigate file descriptors leaks in kapt
• KT-26145 Using kapt without the kotlin-kapt plugin should throw a build error
• KT-26304 Build fails with "cannot find symbol" using gRPC with dagger; stub compilation fails to find classes generated by kapt
• KT-26725 Kapt does not handle androidx.annotation.RecentlyNullable correctly
• KT-26817 kapt 1.2.60+ ignores .java files that are symlinks
• KT-27126 kapt: class implementing List generates bad stub
• KT-27188 kapt Gradle plugin fails in Java 10+ ("Cannot find tools.jar")
• KT-27334 [Kapt] Stub generator uses constant value in method annotation instead of constant name.
• KT-27404 Kapt does not call annotation processors on custom (e.g., androidTest) source sets if all dependencies are inherited from the main kapt configuration
• KT-27487 Previous value is passed to annotation parameter using annotation processing
• KT-27711 kapt: ArrayIndexOutOfBoundsException: 0
• KT-27910 Kapt lazy stub without explicit type that initializes an object expression breaks stubbing

1.3.11

Compiler

• KT-28097 AbstractMethodError for @JvmSuppressWildcards annotation used with coroutines
• KT-28225 Report a warning when comparing incompatible enums

IDE. Gradle

• KT-28389 MPP IDE import does not recognize a dependency from a subproject to the root project

IDE. Inspections and Intentions

• KT-28445 "Redundant async" inspection does not work with release coroutines

IDE. Multiplatform

• KT-27632 MPP IDE commonMain cannot see other commonMain types transitively which are exposed through a middle multiplatform module

JavaScript

• KT-27946 Late initialization based on contracts breaks Kotlin/JS in 1.3.0

Tools. Gradle

• KT-27500 MPP: Native: .module dependency is reported as error in the IDE after import

1.3.10

Compiler

• KT-27758 Kotlin 1.3 breaks compilation of calling of function named 'contract' with block as a last parameter
• KT-27895 Kotlin 1.3.0 broken runtime annotation issue

IDE

• KT-27230 Freeze on paste
• KT-27907 Exception on processing auto-generated classes from AS

IDE. Debugger

• KT-27540 2018.3 and 2019.1 Debugger: Evaluating anything fails with KNPE in LabelNormalizationMethodTransformer
• KT-27833 Evaluate exception in 183/191 with asm-7.0-beta1/'asm-7.0'
• KT-27965 Sequence debugger does not work in Android Studio
• KT-27980 Kotlin sequence debugger throws IDE exception in IDEA 183

IDE. Gradle

• KT-27265 Unresolved reference in IDE on calling JVM source set members of a multiplatform project with Android target from a plain Kotlin/JVM module
• KT-27849 IntelliJ: Wrong scope of JVM platform MPP dependency

IDE. Inspections and Intentions

• KT-26481 Flaky false positive "Receiver parameter is never used" for local extension function
• KT-27357 Function with inline class type value parameters is marked as unused by IDE
• KT-27434 False positive "Unused symbol" inspection for functions and secondary constructors of inline classes
• KT-27945 Quick-fix whitespace bug in KtPrimaryConstructor.addAnnotationEntry()

IDE. Scratch

• KT-27746 Scratch: "Cannot pop operand off an empty stack" in a new scratch file

IDE. Tests Support

• KT-27371 Common tests can not be launched from gutter in MPP Android/iOS project

Reflection

• KT-27878 Spring: "AssertionError: Non-primitive type name passed: void"

Tools. Gradle

• KT-27160 Kotlin Gradle plugin 1.3 resolves script configurations during project evaluation
• KT-27803 CInterop input configuration has 'java-api' as a Usage attribute value in new MPP
• KT-27984 Kotlin Gradle Plugin: Circular dependency

Tools. JPS

• KT-26489 JPS: support -Xcommon-sources for multiplatform projects (JVM)
• KT-27037 Incremental compilation failed after update to 1.3.0-rc-60
• KT-27792 Incremental compilation failed with NullPointerException in KotlinCompileContext.markChunkForRebuildBeforeBuild

Tools. kapt

• KT-27126 kapt: class implementing List generates bad stub

1.3.0

IDE

• KT-25429 Replace update channel in IDE plugin
• KT-27793 kotlinx.android.synthetic is unresolved on project reopening

IDE. Inspections and Intentions

• KT-27619 Inspection "Invalid property key" should check whether reference is soft or not

1.3-RC4

Compiler

Fixes

• KT-26858 Inline class access to private companion object value fails with NSME
• KT-27030 Non-capturing lambda in inline class members fails with internal error (NPE in genClosure)
• KT-27031 Inline extension lambda in inline class fun fails with internal error (wrong bytecode generated)
• KT-27033 Anonymous object in inline class fun fails with internal error (NPE in generateObjectLiteral/.../writeOuterClassAndEnclosingMethod)
• KT-27096 AnalyzerException: Error at instruction 71: Expected I, but found . when function takes unsigned type with default value and returns nullable inline class
• KT-27130 Suspension point is inside a critical section regression
• KT-27132 CCE when inline class is boxed
• KT-27258 Report diagnostic for suspension point inside critical section for crossinline suspend lambdas
• KT-27393 Incorrect inline class type coercion in '==' with generic call
• KT-27484 Suspension points in synchronized blocks checker crashes
• KT-27502 Boxed inline class backed by Any is not unboxed before method invocation
• KT-27526 Functional type with inline class argument and suspend modified expects unboxed value while it is boxed
• KT-27615 Double wrap when inline class is printing if it was obtained from list/map
• KT-27620 Report error when using value of kotlin.Result type as an extension receiver with safe call

IDE

• KT-27298 Deadlock on project open
• KT-27329 Migration doesn't work for kts projects when versions are stored in kt files inside buildSrc directory
• KT-27355 Assertion error from light classes (expected callable member was null) for type alias in JvmMultifileClass annotated file
• KT-27456 New Project wizard: Kotlin (Multiplatform Library): consider generating source files with different names to work around KT-21186
• KT-27473 "Gradle sync failed: Already disposed: Module: 'moduleName-app_commonMain'" on reimport of a multiplatform project with Android target between different IDEs
• KT-27485 Gradle import failed with "Already disposed" error on reopening of a multiplatform project with Android target
• KT-27572 ISE: "Could not generate LightClass for entry declared in " at CompilationErrorHandler.lambda$static$0()

IDE. Android

• KT-26975 CNFDE KotlinAndroidGradleOrderEnumerationHandler$FactoryImpl in AS 3.3 with Kotlin 1.3.0-rc-51
• KT-27451 main target platform selection is not working in a multiplatform project with Android and JVM targets in Android Studio

IDE. Gradle

• KT-27365 Dependencies between Java project and MPP one are not respected by import
• KT-27643 First import of Android project miss skips some dependencies in IDEA 183

IDE. Multiplatform

• KT-27356 Use kotlin-stdlib instead of kotlin-stdlib-jdk8 in Android-related MPP templates

IDE. Scratch

• KT-24180 Add key shortcut and action for running a kotlin scratch file (green arrow button in the editor tool-buttons)

JavaScript

• KT-26320 JS: forEach + firstOrNull + when combination does not compile correctly
• KT-26787 Incorrect JS code translation: when statement inside for loop breaks out of the loop

Libraries

• KT-27508 Rename Random companion object to Default

Tools. Gradle

• KT-26758 Unify Gradle DSL for compiler flags in new multiplatform model
• KT-26840 Support -Xuse-experimental in the new MPP language settings DSL
• KT-27278 New MPP plugin is binary-incompatible with Gradle 5.0
• KT-27499 In new MPP, support compiler plugins (subplugins) options import into the IDE for each source set

Tools. JPS

• KT-27044 JPS rebuilds twice when dependency is updated

Tools. kapt

• KT-27119 kapt: val without explicit type that is assigned an object expression implementing a generic interface breaks compilation

1.3-RC3

Compiler

• KT-26300 Smartcasts don't work if pass same fields of instances of the same class in contract function with conjunction not-null condition
• KT-27221 Incorrect smart cast for sealed classes with a multilevel hierarchy

IDE

• KT-27163 Replace coroutine migration dialog with notification
• KT-27200 New MPP wizard: mobile library
• KT-27201 MPP library wizards: provide maven publishing
• KT-27214 Android test source directories are not recognised in IDE
• KT-27351 Better fix for coroutines outdated versions in Gradle and Maven

IDE. Android

• KT-27331 Missing dependencies in Android project depending on MPP project

IDE. Inspections and Intentions

• KT-27164 Create a quick fix for replacing obsolete coroutines in the whole project

IDE. Multiplatform

• KT-27029 Multiplatform project is unloaded if Gradle refresh/reimport is failed

Libraries

• KT-22869 Improve docs of assertFailsWith function

Tools. CLI

• KT-27218 From @ not all whitespace characters are parsed correctly

Tools. Compiler Plugins

• KT-27166 Disable kotlinx.serialization plugin in IDE by default

1.3-RC2

Android

• KT-27006 Android extensions are not recognised by IDE in multiplatform projects
• KT-27008 Compiler plugins are not working in multiplatform projects with Android target

Compiler

• KT-24415 Remove bridge flag from default methods
• KT-24510 Coroutines make Android's D8 angry
• KT-25545 Import statement of @Experimental element causes compiler warning/error, but annotation can't be used to avoid it
• KT-26382 Wrong smartcast if used safe call + returnsNull effect
• KT-26640 Check inference behaviour for coroutines that it's possible to improve it in compatible way
• KT-26804 Make sure @PublishedAPI is retained in binary representation of a primary constructor of an inline class
• KT-27079 Allow using extensions without opt-in in builder-inference if they add only trivial constraints
• KT-27084 smart cast to non-nullable regression from 1.2.70 to 1.3.0-rc-57
• KT-27117 IllegalAccessError when using private Companion field inside inline lambda
• KT-27121 Illegal field modifiers in class for a field of an interface companion
• KT-27161 Getting "Backend Internal error: Descriptor can be left only if it is last" using new when syntax

IDE

New Features

• KT-26313 Support ResolveScopeEnlarger in Kotlin IDE
• KT-26786 MPP builders: create not only build.gradle but some example files also

Fixes

• KT-13948 IDE plugins: improve description
• KT-14981 IDE should accept only its variant of plugin, as possible
• KT-23864 Copyright message is duplicated in kotlin file in root package after updating copyright
• KT-24907 please remove usages of com.intellij.openapi.vfs.StandardFileSystems#getJarRootForLocalFile deprecated long ago
• KT-25449 Mark classes loaded by custom class loader with @DynamicallyLoaded annotation for the sake of better static analysis
• KT-25463 API version in Kotlin facets isn't automatically set to 1.3 when importing a project in Gradle
• KT-25952 New Project Wizard: generate MPP in a new way
• KT-26501 Fix "IDEA internal actions" group text to "Kotlin internal actions"
• KT-26695 IDEA takes 1.3-M2-release plugin as more recent than any 1.3.0-dev-nnn or 1.3.0-rc-nnn plugin
• KT-26763 Compiler options are not imported into Kotlin facet for a Native module
• KT-26774 Create IDE setting for experimental inline classes
• KT-26889 Don't show migration dialog if no actual migrations are available
• KT-26933 No jre -> jdk fix in Gradle file if version isn't written explicitly
• KT-26937 MPP: Gradle import: adding target definition after importing its sourceSet does not correct the module SDK
• KT-26953 New MPP project wrong formatting
• KT-27021 Wrong JVM target if no Kotlin facet is specified
• KT-27100 Version migration dialog is not shown in Studio 3.3
• KT-27145 Gradle import: JVM modules gets no JDK in dependencies
• KT-27177 MPP wizards: use Gradle 4.7 only
• KT-27193 Gradle import: with Kotlin configured Android module gets non-Android JDK

IDE. Code Style, Formatting

• KT-27027 Formatter puts when subject variable on a new line

IDE. Completion

• KT-25313 Autocomplete generates incorrect code on fields overriding by expected class

IDE. Hints

• KT-26057 (arguably) redundant hint shown for enum value when qualified with enum class

IDE. Inspections and Intentions

• KT-14929 Deprecated ReplaceWith for type aliases
• KT-25251 Create intention for migration coroutines from experimental to released state
• KT-26027 False positive from "Nested lambda has shadowed implicit parameter" inspection for SAM conversion
• KT-26268 Inspection "Nested lambda has shadowed implicit parameter" should only warn if parameter is used
• KT-26775 Create quick fix that enable or disable experimental inline classes in project
• KT-26991 ReplaceWith for object doesn't work anymore

IDE. Multiplatform

• KT-24060 main function in common part of MPP project: allow user to choose between platform modules to run it from
• KT-26647 Warn user about incompatible/ignored Native targets on Gradle build of a project with the new multiplatform model
• KT-26690 IDE significantly slows down having Native target in a multiplatform project
• KT-26872 MPP: JS: Node.js run configuration is created with not existing JavaScript file
• KT-26942 MPP IDE: JS test configuration removes gutter actions from common module
• KT-27010 New mpp: missing run gutters in common code when relevant platform roots do not exist
• KT-27133 IDE requires actual implementations to be also present in test source sets
• KT-27172 ISE: "The provided plugin org.jetbrains.kotlin.android.synthetic.AndroidComponentRegistrar is not compatible with this version of compiler" on build of a multiplatform project with iOS and Android

IDE. Navigation

• KT-25055 Android modules are named same as JVM ones in actual gutter tooltip
• KT-26004 IDE: Unable to navigate to common library declaration from platform code (not necessarily in an MPP project)

IDE. Tests Support

• KT-23884 Running common module test in IDE results in "no JDK specified" error
• KT-23911 Cannot jump to source from common test function in Run tool window

Libraries

• KT-18608 Result type for Kotlin (aka Try monad)
• KT-26666 Add documentation for contract DSL

Reflection

• KT-24170 Instance parameter of inherited declaration should have the type of subclass, not the base class

Tools. Compiler Plugins

• KT-24444 Do not store proxy objects from Gradle importer in the project model

Tools. Gradle

• KT-25200 Report a warning when building multiplatform code in Gradle
• KT-26390 Implement source JARs building and publishing in new MPP
• KT-26771 New Native MPP Gradle plugin creates publications only for host system
• KT-26834 Gradle compilation of multimodule project fails with Could not resolve all files for configuration ':example-v8:apiDependenciesMetadata'
• KT-27111 org.jetbrains.kotlin.platform.type is not set for some Gradle configurations in multiplatform plugin
• KT-27196 Support Kotlin/JS DCE in new MPP

Tools. Scripts

• KT-26828 main-kts test fails with "Error processing script definition class"
• KT-27015 Scripting sample from 1.3 RC blogpost does not work
• KT-27050 1.3-RC Scripting @file:Repository and @file:DependsOn annotations are not repeatable

1.3-RC

Compiler

New Features

• KT-17679 Support suspend fun main in JVM
• KT-24854 Support suspend function types for arities bigger than 22
• KT-26574 Support main entry-point without arguments in frontend, IDE and JVM

Performance Improvements

• KT-26490 Change boxing technique: instead of calling valueOf, allocate new wrapper type

Fixes

• KT-22069 Array class literals are always loaded as Array<*> from deserialized annotations
• KT-22892 Call of invoke function with lambda parameter on a field named suspend should be reported
• KT-24708 Incorrect WhenMappings code generated in case of mixed enum classes in when conditions
• KT-24853 Forbid KSuspendFunctionN and SuspendFunctionN to be used as supertypes
• KT-24866 Review support of all operators for suspend function and forbid all unsupported
• KT-25461 Mangle names of functions that have top-level inline class types in their signatures to allow non-trivial non-public constructors
• KT-25855 Load Java declarations which reference kotlin.jvm.functions.FunctionN as Deprecated with level ERROR
• KT-26071 Postpone conversions from signed constant literals to unsigned ones
• KT-26141 actual typealias for expect sealed class results in error "This type is sealed, so it can be inherited by only its own nested classes or objects"
• KT-26200 Forbid suspend functions annotated with @kotlin.test.Test
• KT-26219 Result of unsigned predecrement/preincrement is not boxed as expected
• KT-26223 Inline lambda arguments of inline class types are passed incorrectly
• KT-26291 Boxed/primitive types clash when overriding Kotlin from Java with common generic supertype with inline class type argument
• KT-26403 Add -impl suffix to box/unbox methods and make them synthetic
• KT-26404 Mangling: setters for properties of inline class types
• KT-26409 implies in CallsInPlace effect isn't supported
• KT-26437 Generate constructors containing inline classes as parameter types as private with synthetic accessors
• KT-26449 Prohibit equals-like and hashCode-like declarations inside inline classes
• KT-26451 Generate static methods with equals/hashCode implementations
• KT-26452 Get rid of $Erased nested class in ABI of inline classes
• KT-26453 Generate all static methods in inline classes with “-impl” suffix
• KT-26454 Prohibit @JvmName on functions that are assumed to be mangled
• KT-26468 Inline class ABI: Constructor invocation is not represented in bytecode
• KT-26480 Report error from compiler when suspension point is located between corresponding MONITORENTER/MONITOREXIT
• KT-26538 Prepare kotlin.Result to publication in 1.3
• KT-26558 Inline Classes: IllegalStateException when invoking secondary constructor for a primitive underlying type
• KT-26570 Inline classes ABI
• KT-26573 Reserve box, unbox, equals and hashCode methods inside inline class for future releases
• KT-26575 Reserve bodies of secondary constructors for inline classes
• KT-26576 Generate stubs for box/unbox/equals/hashCode inside inline classes
• KT-26580 Add version to kotlin.coroutines.jvm.internal.DebugMetadata
• KT-26659 Prohibit using kotlin.Result as a return type and with special operators
• KT-26687 Stdlib contracts have no effect in common code
• KT-26707 companion val of primitive type is not treated as compile time constant
• KT-26720 Write language version requirement on inline classes and on declarations that use inline classes
• KT-26859 Inline class misses unboxing when using indexer into an ArrayList
• KT-26936 Report warning instead of error on usages of Experimental/UseExperimental
• KT-26958 Introduce builder-inference with an explicit opt-in for it

IDE

New Features

• KT-26525 "Move Element Right/Left": Support type parameters in where clause (multiple type constraints)

Fixes

• KT-22491 MPP new project/new module templates are not convenient
• KT-26428 Kotlin Migration in AS32 / AS33 fails to complete after "Indexing paused due to batch update" event
• KT-26484 Do not show -Xmulti-platform option in facets for common modules of multiplatform projects with the new model
• KT-26584 @Language prefix and suffix are ignored for function arguments
• KT-26679 Coroutine migrator should rename buildSequence/buildIterator to their new names
• KT-26732 Kotlin language version from IDEA settings is not taken into account when working with Java code
• KT-26770 Android module in a multiplatform project isn't recognised as a multiplatform module
• KT-26794 Bad version detection during migration in Android Studio 3.2
• KT-26823 Fix deadlock in databinding with AndroidX which led to Android Studio hanging
• KT-26827 ISE “Error type encountered: [ERROR : UInt] (UnresolvedType)” for data inline class wrapped unsigned type
• KT-26829 ISE “Error type encountered: [ERROR : UInt] (UnresolvedType)” for using as a field inline class wrapped unsigned type
• KT-26843 LazyLightClassMemberMatchingError$NoMatch: Couldn't match ClsMethodImpl:getX MemberIndex(index=1) (with 0 parameters) on inline class overriding inherited interface method defined in different files
• KT-26895 Exception while building light class for @Serializable annotated class

IDE. Android

• KT-26169 Android extensions are not recognised by IDE in multiplatform projects
• KT-26813 Multiplatform projects without Android target are not imported properly into Android Studio

IDE. Code Style, Formatting

• KT-22322 Incorrect indent after pressing Enter after annotation entry
• KT-26377 Formatter does not add blank line between annotation and type alias (or secondary constructor)

IDE. Decompiler

• KT-25853 IDEA hangs when Kotlin bytecode tool window open while editing a class with secondary constructor

IDE. Gradle

• KT-26634 Do not generate module for metadataMain compilation on new MPP import
• KT-26675 Gradle: Dependency on multiple files gets duplicated on import

IDE. Inspections and Intentions

New Features

• KT-17687 Quickfix for "Interface doesn't have constructors" to convert to anonymous object
• KT-24728 Add quickfix to remove single explicit & unused lambda parameter
• KT-25533 An intention to create actual implementations for expect members annotated with @OptionalExpectation
• KT-25621 Inspections for functions returning SuccessOrFailure
• KT-25969 Add an inspection for 'flatMap { it }'
• KT-26230 Inspection: replace safe cast (as?) with if (instance check + early return)

Fixes

• KT-13343 Remove explicit type specification breaks code if initializer omits generics
• KT-19586 Create actual implementation does nothing when platform module has no source directories.
• KT-22361 Multiplatform: "Generate equals() and hashCode()" intention generates JVM specific code for arrays in common module
• KT-22552 SimplifiableCallChain should keep formatting and comments
• KT-24129 Multiplatform quick fix add implementation suggests generated source location
• KT-24405 False "redundant overriding method" for abstract / default interface method combination
• KT-24978 Do not highlight foldable if-then for is checks
• KT-25228 "Create function" from a protected inline method should not produce a private method
• KT-25525 @Experimental-related quick fixes are not suggested for usages in top-level property
• KT-25526 @Experimental-related quick fixes are not suggested for usages in type alias
• KT-25548 @Experimental API usage: "Add annotation" quick fix incorrectly modifies primary constructor
• KT-25609 "Unused symbol" inspection reports annotation used only in -Xexperimental/-Xuse-experimental settings
• KT-25711 "Deferred result is never used" inspection: remove experimental package (or whole FQN) from description
• KT-25712 "Redundant 'async' call" inspection quick fix action label looks too long
• KT-25883 False "redundant override" reported on boxed parameters
• KT-25886 False positive "Replace 'if' with elvis operator" for nullable type
• KT-25968 False positive "Remove redundant backticks" with keyword yield
• KT-26009 "Convert to 'also'" intention adds an extra it expression
• KT-26015 Intention to move property to constructor adds @field: qualifier to annotations
• KT-26179 False negative "Boolean expression that can be simplified" for !true
• KT-26181 Inspection for unused Deferred result: report for all functions by default
• KT-26185 False positive "redundant semicolon" with if-else
• KT-26187 "Cascade if can be replaced with when" loses lambda curly braces
• KT-26289 Redundant let with call expression: don't report for long call chains
• KT-26306 "Add annotation target" quick fix adds EXPRESSION annotation, but not SOURCE retention
• KT-26343 "Replace 'if' expression with elvis expression" produces wrong code in extension function with not null type parameter
• KT-26353 "Make variable immutable" is a bad name for a quickfix that changes 'var' to 'val'
• KT-26472 "Maven dependency is incompatible with Kotlin 1.3+ and should be updated" inspection is not included into Kotlin Migration
• KT-26492 "Make private" on annotated annotation produces nasty new line
• KT-26599 "Foldable if-then" inspection marks if statements that cannot be folded using ?. operator
• KT-26674 Move lambda out of parentheses is not proposed for suspend lambda
• KT-26676 ReplaceWith always puts suspend lambda in parentheses
• KT-26810 "Incompatible kotlinx.coroutines dependency" inspections report library built for 1.3-RC with 1.3-RC plugin

IDE. Multiplatform

• KT-20368 Unresolved reference to declarations from kotlin.reflect in common code in multi-platform project: no "Add import" quick-fix
• KT-26356 New MPP doesn't work with Android projects
• KT-26369 Library dependencies don't transitively pass for custom source sets at new MPP import to IDE
• KT-26414 Remove old multiplatform modules templates from New Project/New Module wizard
• KT-26517 Create actual ... generates default constructor parameter values
• KT-26585 Stdlib annotations annotated with @OptionalExpectation are reported with false positive error in common module

IDE. Navigation

• KT-18490 Multiplatform project: Set text cursor correctly to file with header on navigation from impl side

IDE. Refactorings

• KT-17124 Change signature refactoring dialog unescapes escaped parameter names
• KT-25454 Extract function: make default visibility private
• KT-26533 Move refactoring on interface shows it as "abstract interface" in the dialog

IDE. Tests Support

• KT-26793 Left gutter run icon does not appear for JS tests in old MPP

IDE. Ultimate

• KT-19309 Spring JPA Repository IntelliJ tooling with Kotlin

JavaScript

• KT-26466 Uncaught ReferenceError: println is not defined
• KT-26572 Support suspend fun main in JS
• KT-26628 Support main entry-point without arguments in JS

Libraries

New Features

• KT-25039 Any?.hashCode() extension
• KT-26359 Use JvmName on parameters of kotlin.Metadata to improve the public API
• KT-26398 Coroutine context shall perform structural equality comparison on keys
• KT-26598 Introduce ConcurrentModificationException actual typealias in the JVM library

Performance Improvements

• KT-18483 Check to contains value in range can be dramatically slow

Fixes

• KT-17716 JS: Some kotlin.js.Math methods break Integer type safety
• KT-21703 Review deprecations in stdlib for 1.3
• KT-21784 Deprecate and remove org.jetbrains.annotations from kotlin-stdlib in compiler distribution
• KT-22423 Deprecate mixed integer/floating point overloads of ClosedRange.contains operator
• KT-25217 Raise deprecation level for mod operators to ERROR
• KT-25935 Move kotlin.reflect interfaces to kotlin-stdlib-common
• KT-26358 Rebuild anko for new coroutines API
• KT-26388 Specialize contentDeepEquals/HashCode/ToString for arrays of unsigned types
• KT-26523 EXACTLY_ONCE contract in runCatching doesn't consider lambda exceptions are caught
• KT-26591 Add primitive boxing functions to stdlib
• KT-26594 Change signed-to-unsigned widening conversions to sign extending
• KT-26595 Deprecate common 'synchronized(Any) { }' function
• KT-26596 Rename Random.nextInt/Long/Double parameters
• KT-26678 Rename buildSequence/buildIterator to sequence/iterator
• KT-26929 Kotlin Reflect and Proguard: can’t find referenced class kotlin.annotations.jvm.ReadOnly/Mutable

Reflection

• KT-25499 Use-site targeted annotations on property accessors are not visible in Kotlin reflection if there's also an annotation on the property
• KT-25500 Annotations on parameter setter are not visible through reflection
• KT-25664 Inline classes don't work properly with reflection
• KT-26293 Incorrect javaType for suspend function's returnType

Tools. CLI

• KT-24613 Support argfiles in kotlinc with "@argfile"
• KT-25862 Release '-Xprogressive' as '-progressive'
• KT-26122 Support single quotation marks in argfiles

Tools. Gradle

• KT-25680 Gradle plugin: version with non-experimental coroutines and no related settings still runs compiler with -Xcoroutines option
• KT-26253 New MPP model shouldn't generate metadataMain and metadataTest source sets on IDE import
• KT-26383 Common modules dependencies are not mapped at import of a composite multiplatform project with project dependencies into IDE
• KT-26515 Support -Xcommon-sources in new MPP
• KT-26641 In new MPP, Gradle task for building classes has a name unexpected for GradleProjectTaskRunner
• KT-26784 Support non-kts scripts discovery and compilation in gradle

Tools. JPS

• KT-26072 MPP compilation issue
• KT-26254 JPS build for new MPP model doesn't work: kotlinFacet?.settings?.sourceSetNames is empty

Tools. kapt

• KT-25374 Kapt: Build fails with Unresolved local class
• KT-26540 kapt3 fails to handle to-be-generated superclasses

1.3-M2

Compiler

New Features

• KT-6592 Support local variable initialization in lambda arguments to some functions
• KT-19323 Allow generic type parameter to have mixed constraints for @InlineOnly functions
• KT-24857 Support compatibility wrappers for coroutines in compiler
• KT-25320 Support limited conversions for constants to simplify interop for Kotlin/Native
• KT-25372 Support JvmName on annotation property getters
• KT-25495 Release contract DSL as experimental
• KT-25557 Metadata that maps coroutine label to the file name and line number
• KT-25559 Metadata that maps coroutine spilled state to local variables
• KT-25655 Safe or non-null calls required on x following check(x != null)
• KT-25972 Support reading binary metadata of the next major release

Performance Improvements

• KT-24657 Compiler performance issues with big files
• KT-26243 Avoid redundant "specialized" method for suspend lambdas.

Fixes

• KT-19628 Unresolved reference not reported on data class constructor @get annotation
• KT-20830 Nulls can propagate through "enhanced nullability" types on module boundaries
• KT-21240 Remove suspendCoroutineOrReturn intrinsic from compiler
• KT-22379 Condition of while-loop with break can produce unsound smartcast
• KT-23438 Back-end (JVM) Internal error: Failed to generate function suspendCoroutineOrReturn
• KT-23819 Inline classes: mapping of fully generic classes
• KT-23857 Annotation with target TYPE is not applicable to TYPE_USE in Java sources
• KT-24717 Allow number literals to be used as unsigned ones with unsigned expected typed
• KT-24860 Forbid usage function expression as suspend function expression
• KT-24872 Do not generate user-defined methods inside box class of inline class
• KT-24873 Generate equals/hashCode/toString methods for inline classes same as for data classes
• KT-25246 Incorrect bytecode generated for secondary constructor in inline class + primitive array
• KT-25278 No smart cast for "returns() implies" contract when default argument is omitted
• KT-25287 Getter-targeted annotations on annotation constructor parameters are lost
• KT-25293 “Couldn't transform method node” error on compiling inline class with hashCode() method call when underlying value type is basic (number, char, boolean)
• KT-25299 NoSuchMethodError Foo$Erased.hashCode(Ljava/lang/Object;) for hashCode(), toString() and equals() methods in inline classes
• KT-25328 “Couldn't transform method node” error on compiling inline class which is wrapping Unit type
• KT-25330 CCE “[Ljava.lang.Integer; cannot be cast to Foo” for inline class which is wrapping Array
• KT-25521 Coroutines state machine in Kotlin 1.3 should not have getLabel/setLabel
• KT-25558 Stabilize field naming and mangling for suspending lambda classes
• KT-25580 No warning about experimental API when unsigned types are inferred
• KT-25599 “Exception during code generation” on compiling code with public constructor of unsigned numbers array
• KT-25614 Support secondary constructors for inline classes
• KT-25683 Compiler support for calling experimental suspend functions and function with experimental suspend function type as parameter
• KT-25688 Add $continuation to LVT
• KT-25750 CCE “Foo cannot be cast to java.lang.String” with inline class
• KT-25760 Inline data class throws java.lang.VerifyError when trying toString() it
• KT-25794 Incorrect code generated for accessing elements of Array where C is inline class
• KT-25824 Move SuspendFunctionN fictitious interfaces to kotlin.coroutines package
• KT-25825 Allow to distinguish instances of function types from instances of suspend function types via kotlin.coroutines.jvm.internal.SuspendFunction marker interface
• KT-25912 Calling groupingBy+reduce from suspend function causes IncompatibleClassChangeError
• KT-25914 '==' for inline class with custom 'equals' uses underlying primitive type comparison instead
• KT-25973 Report metadata version mismatch upon discovering a .kotlin_module file in the dependencies with an incompatible metadata version
• KT-25981 Incorrect code generated for unboxed to boxed inline class equality
• KT-25983 Inline class equality uses IEEE 754 instead of total order
• KT-26029 Prohibit delegated properties inside inline classes
• KT-26030 Prohibit implementation by delegation for inline classes
• KT-26052 Inline Classes: IllegalArgumentException when underlying type is non-null but declared type is nullable
• KT-26101 Prohibit inline classes with recursive underlying types
• KT-26103 Inline class with type parameters is inconsistently mapped to JVM type if underlying type is a primitive
• KT-26120 Inline Classes: Class inheritance is allowed but fails when referencing a superclass member

IDE

• KT-25316 PARTIAL resolve mode doesn't work when effects system is enabled
• KT-25611 With Language / API version = "Latest stable" installing 1.3-M1 plugin upgrades actual values to 1.3
• KT-25681 Remove "Coroutines (experimental)" settings from IDE and do not pass -Xcoroutines to JPS compiler (since 1.3)
• KT-25714 Kotlin plugin updater suggests plugins incompatible with current Studio build platform
• KT-26239 New MPP template: add kotlin-test libraries to the modules dependencies by default
• KT-26290 Gradle Import: When all modules have the same language/API version use it for project-level settings as well

IDE. Completion

• KT-25275 Code completion does not take into account smart casts gotten from "returns implies" contract

IDE. Inspections and Intentions

• KT-22330 "Add remaining branch" quickfix doesn't properly import enum class
• KT-22354 "Add remaining branches with import" quick fix causes KNPE at ImportAllMembersIntention$Companion.importReceiverMembers()
• KT-26158 KNPE in "Create local variable"

IDE. Multiplatform

• KT-26217 "org.jetbrains.kotlin.resolve.MultiTargetPlatform$Common cannot be cast to org.jetbrains.kotlin.resolve.MultiTargetPlatform$Specific" on splitted actuals

IDE. Script

• KT-25814 IDE scripting console -> kotlin (JSR-223) - compilation errors - unresolved IDEA classes
• KT-25822 jvmTarget from the script compiler options is ignored in the IDE

JavaScript

• KT-22053 JS: Secondary constructor of Throwable inheritor doesn't call to primary one
• KT-25014 Support 'when' with subject variable in JS back-end
• KT-26064 JS inliner calls wrong constructor in incremental build
• KT-26117 JS runtime error: ArrayList_init instead of ArrayList_init_0
• KT-26138 JS: prohibit external inline class
• KT-26171 Prohibit inline classes as parameter and return type of external declaration

Language design

• KT-7566 Annotate kotlin.test.Test.assertNotNull() so that safe dereference isn't required after it
• KT-14397 Make "smart cast" to non-null string working after isNullOrEmpty() check.
• KT-19532 Evaluation order for constructor call
• KT-22274 Restrict statement labels applicability

Libraries

New Features

• KT-13814 keys.associateWith { k -> v } function
• KT-15539 Random Convenience Method in Ranges (LongRange, IntRange, etc)
• KT-15695 String/Collection/Map/Array/Sequence.ifEmpty { null }
• KT-18986 Debug-friendly toString implementation for CoroutineImpl
• KT-25570 Random extensions to generate unsigned random numbers
• KT-25659 Consider adding SuccessOrFailure.getOrDefault function
• KT-25874 Support array copying between two existing arrays
• KT-25875 Need more access to raw underlying array in unsigned arrays
• KT-25962 Add contract for 'synchronized'
• KT-26339 Introduce CoroutineStackFrame interface for coroutine stack reconstruction in debugger

Fixes

• KT-16097 Index overflow when sequence has more than Int.MAX_VALUE elements
• KT-17176 Long/Int progressions with Long.MIN_VALUE and Int.MIN_VALUE step are weird
• KT-19305 IOStreams#readBytes is badly named
• KT-19489 Array.copyOfRange returns value violating declared type when bounds are out of range
• KT-21049 Different behavior in split by regex at JVM and JS
• KT-23799 Discontinue deprecated artifacts distribution: kotlin-runtime, kotlin-jslib, kotlin-stdlib-jre7/8
• KT-25274 contract() function has internal visibility
• KT-25303 checkNotNull(T?) has no contract in contrast to checkNotNull(T?, () -> Any)
• KT-25771 SuccessOrFailure.isFailure always returns false when boxed
• KT-25961 Provide a way to create default-initialized 'U*Array'
• KT-26161 String-to-number and number-to-string conversions for unsigned integers

Reflection

• KT-14657 Reflection: Provide ability to enumerate all cases of a sealed class
• KT-16795 KType does not implement KAnnotatedElement
• KT-21972 Reflection: Implement suspend functions KCallable.callSuspend, callSuspendBy, and isSuspend

Tools. CLI

• KT-25823 Report a warning or error if an old language version or API version is used

Tools. Gradle

• KT-26301 In new MPP, a project with no java or java-base plugin applied cannot depend on a published MPP lib or run tests

Tools. Scripts

• KT-26142 update maven-central remote repository url

1.3-M1 IDE plugins update

IDE

• Kotlin plugin for Android Studio 3.3 Canary 4 is ready
• KT-25713 Android Studio on 182 platform: Gradle project re-import fails
• KT-25733 "Convert Java File to Kotlin File" action was always disabled

1.3-M1

Language design

• KEEP-104 Inline classes
• KEEP-135 Unsigned integer types
• KEEP-95 Experimental API annotations
• KT-4895 Support assignment of "when" subject to a variable
• KT-13762 Prohibit annotations with target 'EXPRESSION' and retention 'BINARY' or 'RUNTIME'
• KT-16681 kotlin allows mutating the field of read-only property
• KT-21515 Restrict visibility of classifiers, nested in companion objects

Compiler

• KT-24848 Refine loading Java overrides of Kotlin suspend functions
• KT-9580 Report an error if 'setparam' target does not make sense for a parameter declaration
• KT-16310 Nested classes inside enum entries capturing outer members
• KT-17981 Type parameter for catch parameter possible when exception is nested in generic, but fails in runtime
• KT-21354 Inconsistent behavior of 'for-in-range' loop if range is an array variable modified in loop body
• KT-25333 Restrict visibility of Java static members from supertypes of companion object
• KT-25623 Do not load experimental coroutines as non-suspend function with additional Continuation parameter

Backend. JVM

• KT-6301 Support JvmStatic annotation on interface companion object members
• KT-25508 Inject probeCoroutineSuspended to coroutines body
• KT-18987 Unroll recursion in CoroutineImpl.resume
• KT-11567 Companion object INSTANCE field more visible than companion object class itself
• KT-13764 Support lambdas and function references for arities bigger than 22
• KT-16615 Do not generate ConstantValue attribute for non-const vals
• KT-25193 Names of parameters from Java interface methods implemented by delegation are lost
• KT-25324 VerifyError “Bad type on operand stack” on running code with call of array iterator for array of inline classes
• KT-25325 CCE “Foo cannot be cast to java.lang.String” for iterating over the list of inline classes
• KT-25626 Inline class values inside string literals don't use their own toString implementation

Backend. JVM. Coroutines

• KT-20219 Inline suspend function can't be used as non-inline function
• KT-24863 Support new Continuation API in JVM BE
• KT-24864 Create new CoroutineImpl and other internal coroutines interfaces

Backend. JVM. Inline

• KT-25511 Inline classes fail with cross-inline functions

Binary Metadata

• KT-24617 Optional expected annotation is unresolved in a dependent platform module
• KT-25120 RequireKotlin on nested class and its members is not loaded correctly
• KT-25273 java.lang.UnsupportedOperationException from incremental JS compilation
• KT-25310 Write isUnsigned flag into metadata for unsigned types

Frontend

• KT-15807 @JvmField is not applicable to interface companion properties
• KT-16962 Annotation classes cannot contain types or static fields because they cannot have a body
• KT-23153 Compiler allows to set non constant value as annotation parameter
• KT-23362 Move coroutines to package kolin.coroutines for 1.3
• KT-24861 Fix loading kotlin.suspend compiled with LV=1.2 when release coroutines package is used
• KT-25241 Kotlin compiler doesn't warn about usage of lambda/reference with more than 22 parameters
• KT-25600 NSEE “Collection is empty” after trying to call default constructor of unsigned number class

Frontend. Data-flow analysis

• KT-22517 Deprecate smartcasts for local delegated properties

Frontend. Declarations

• KT-19618 Data class copy() call with optional parameters leads to broken code when the class implements an interface with copy()
• KT-23277 Prohibit local annotation classes
• KT-24197 Make 'mod' operator error in 1.3

Frontend. Lexer & Parser

• KT-24663 Add 'UL' suffix to represent number literals of unsigned Long type

Frontend. Resolution and Inference

• KT-16908 Support callable references to suspending functions
• KT-20588 Report error on single element assignment to varargs in named form in annotations
• KT-20589 Report error on single element assignment to varargs in named form in functions
• KT-24859 Disallow calls of functions annotated with receiver annotated with @RestrictsSuspension in foreign suspension context

IDE

• KT-25466 Make coroutines resolve to be independent of language and API versions set in Kotlin Compiler settings

IDE. Inspections and Intentions

• KT-24243 Support quick fix to enable usages of Experimental/UseExperimental
• KT-11154 Spell checking inspection is not suppressable
• KT-25169 Impossible to suppress UAST/JVM inspections

IDE. Libraries

• KT-25129 Idea freezes when Kotlin plugin tries to determine if jar is js lib in jvm module

Libraries

New Features

• KEEP-131, KT-17261 Add random number generator to stdlib and related collection extension functions
• KT-7922 Companion object for Boolean
• KT-8247 Byte size for primitives
• KT-16552 Add Sequence.orEmpty()
• KT-18559 Make SafeContinuation and context impl classes serializable
• KT-18910 StringBuilder#setLength(0) in non-JVM Kotlin
• KT-21763 Provide Char MIN_VALUE/MAX_VALUE constants
• KT-23279 isNullOrEmpty() for collections, maps, and arrays
• KT-23602 Make kotlin.Metadata public

Fixes

• KT-23564 KotlinJS: Math is deprecated yet random is not a global function
• KT-24856 Create compatibility wrappers for migration from 1.2 to 1.3 coroutines
• KT-24862 Create new Continuation API for coroutines

Reflection

• KT-25541 Incorrect parameter names in reflection for inner class constructor from Java class compiled with "-parameters"